diff --git a/src/libs/freetype2/truetype/ttinterp.c b/src/libs/freetype2/truetype/ttinterp.c new file mode 100644 index 0000000000..28587e6143 --- /dev/null +++ b/src/libs/freetype2/truetype/ttinterp.c @@ -0,0 +1,7496 @@ +/***************************************************************************/ +/* */ +/* ttinterp.c */ +/* */ +/* TrueType bytecode interpreter (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_CALC_H +#include FT_TRIGONOMETRY_H +#include FT_SYSTEM_H + +#include "ttinterp.h" + +#include "tterrors.h" + + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + +#define TT_MULFIX FT_MulFix +#define TT_MULDIV FT_MulDiv +#define TT_INT64 FT_Int64 + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_ttinterp + +#undef NO_APPLE_PATENT +#define APPLE_THRESHOLD 0x4000000L + + /*************************************************************************/ + /* */ + /* In order to detect infinite loops in the code, we set up a counter */ + /* within the run loop. A single stroke of interpretation is now */ + /* limitet to a maximal number of opcodes defined below. */ + /* */ +#define MAX_RUNNABLE_OPCODES 1000000L + + + /*************************************************************************/ + /* */ + /* There are two kinds of implementations: */ + /* */ + /* a. static implementation */ + /* */ + /* The current execution context is a static variable, which fields */ + /* are accessed directly by the interpreter during execution. The */ + /* context is named `cur'. */ + /* */ + /* This version is non-reentrant, of course. */ + /* */ + /* b. indirect implementation */ + /* */ + /* The current execution context is passed to _each_ function as its */ + /* first argument, and each field is thus accessed indirectly. */ + /* */ + /* This version is fully re-entrant. */ + /* */ + /* The idea is that an indirect implementation may be slower to execute */ + /* on low-end processors that are used in some systems (like 386s or */ + /* even 486s). */ + /* */ + /* As a consequence, the indirect implementation is now the default, as */ + /* its performance costs can be considered negligible in our context. */ + /* Note, however, that we kept the same source with macros because: */ + /* */ + /* - The code is kept very close in design to the Pascal code used for */ + /* development. */ + /* */ + /* - It's much more readable that way! */ + /* */ + /* - It's still open to experimentation and tuning. */ + /* */ + /*************************************************************************/ + + +#ifndef TT_CONFIG_OPTION_STATIC_INTERPRETER /* indirect implementation */ + +#define CUR (*exc) /* see ttobjs.h */ + +#else /* static implementation */ + +#define CUR cur + + static + TT_ExecContextRec cur; /* static exec. context variable */ + + /* apparently, we have a _lot_ of direct indexing when accessing */ + /* the static `cur', which makes the code bigger (due to all the */ + /* four bytes addresses). */ + +#endif /* TT_CONFIG_OPTION_STATIC_INTERPRETER */ + + + /*************************************************************************/ + /* */ + /* The instruction argument stack. */ + /* */ +#define INS_ARG EXEC_OP_ FT_Long* args /* see ttobjs.h for EXEC_OP_ */ + + + /*************************************************************************/ + /* */ + /* This macro is used whenever `exec' is unused in a function, to avoid */ + /* stupid warnings from pedantic compilers. */ + /* */ +#define FT_UNUSED_EXEC FT_UNUSED( CUR ) + + + /*************************************************************************/ + /* */ + /* This macro is used whenever `args' is unused in a function, to avoid */ + /* stupid warnings from pedantic compilers. */ + /* */ +#define FT_UNUSED_ARG FT_UNUSED_EXEC; FT_UNUSED( args ) + + + /*************************************************************************/ + /* */ + /* The following macros hide the use of EXEC_ARG and EXEC_ARG_ to */ + /* increase readabilty of the code. */ + /* */ + /*************************************************************************/ + + +#define SKIP_Code() \ + SkipCode( EXEC_ARG ) + +#define GET_ShortIns() \ + GetShortIns( EXEC_ARG ) + +#define NORMalize( x, y, v ) \ + Normalize( EXEC_ARG_ x, y, v ) + +#define SET_SuperRound( scale, flags ) \ + SetSuperRound( EXEC_ARG_ scale, flags ) + +#define ROUND_None( d, c ) \ + Round_None( EXEC_ARG_ d, c ) + +#define INS_Goto_CodeRange( range, ip ) \ + Ins_Goto_CodeRange( EXEC_ARG_ range, ip ) + +#define CUR_Func_project( x, y ) \ + CUR.func_project( EXEC_ARG_ x, y ) + +#define CUR_Func_move( z, p, d ) \ + CUR.func_move( EXEC_ARG_ z, p, d ) + +#define CUR_Func_dualproj( x, y ) \ + CUR.func_dualproj( EXEC_ARG_ x, y ) + +#define CUR_Func_freeProj( x, y ) \ + CUR.func_freeProj( EXEC_ARG_ x, y ) + +#define CUR_Func_round( d, c ) \ + CUR.func_round( EXEC_ARG_ d, c ) + +#define CUR_Func_read_cvt( index ) \ + CUR.func_read_cvt( EXEC_ARG_ index ) + +#define CUR_Func_write_cvt( index, val ) \ + CUR.func_write_cvt( EXEC_ARG_ index, val ) + +#define CUR_Func_move_cvt( index, val ) \ + CUR.func_move_cvt( EXEC_ARG_ index, val ) + +#define CURRENT_Ratio() \ + Current_Ratio( EXEC_ARG ) + +#define CURRENT_Ppem() \ + Current_Ppem( EXEC_ARG ) + +#define CUR_Ppem() \ + Cur_PPEM( EXEC_ARG ) + +#define INS_SxVTL( a, b, c, d ) \ + Ins_SxVTL( EXEC_ARG_ a, b, c, d ) + +#define COMPUTE_Funcs() \ + Compute_Funcs( EXEC_ARG ) + +#define COMPUTE_Round( a ) \ + Compute_Round( EXEC_ARG_ a ) + +#define COMPUTE_Point_Displacement( a, b, c, d ) \ + Compute_Point_Displacement( EXEC_ARG_ a, b, c, d ) + +#define MOVE_Zp2_Point( a, b, c, t ) \ + Move_Zp2_Point( EXEC_ARG_ a, b, c, t ) + + + /*************************************************************************/ + /* */ + /* Instruction dispatch function, as used by the interpreter. */ + /* */ + typedef void (*TInstruction_Function)( INS_ARG ); + + + /*************************************************************************/ + /* */ + /* A simple bounds-checking macro. */ + /* */ +#define BOUNDS( x, n ) ( (FT_UInt)(x) >= (FT_UInt)(n) ) + + +#undef SUCCESS +#define SUCCESS 0 + +#undef FAILURE +#define FAILURE 1 + + + /*************************************************************************/ + /* */ + /* CODERANGE FUNCTIONS */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Goto_CodeRange */ + /* */ + /* */ + /* Switches to a new code range (updates the code related elements in */ + /* `exec', and `IP'). */ + /* */ + /* */ + /* range :: The new execution code range. */ + /* */ + /* IP :: The new IP in the new code range. */ + /* */ + /* */ + /* exec :: The target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Goto_CodeRange( TT_ExecContext exec, + FT_Int range, + FT_Long IP ) + { + TT_CodeRange* coderange; + + + FT_ASSERT( range >= 1 && range <= 3 ); + + coderange = &exec->codeRangeTable[range - 1]; + + FT_ASSERT( coderange->base != NULL ); + + /* NOTE: Because the last instruction of a program may be a CALL */ + /* which will return to the first byte *after* the code */ + /* range, we test for IP <= Size instead of IP < Size. */ + /* */ + FT_ASSERT( (FT_ULong)IP <= coderange->size ); + + exec->code = coderange->base; + exec->codeSize = coderange->size; + exec->IP = IP; + exec->curRange = range; + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Set_CodeRange */ + /* */ + /* */ + /* Sets a code range. */ + /* */ + /* */ + /* range :: The code range index. */ + /* */ + /* base :: The new code base. */ + /* */ + /* length :: The range size in bytes. */ + /* */ + /* */ + /* exec :: The target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Set_CodeRange( TT_ExecContext exec, + FT_Int range, + void* base, + FT_Long length ) + { + FT_ASSERT( range >= 1 && range <= 3 ); + + exec->codeRangeTable[range - 1].base = (FT_Byte*)base; + exec->codeRangeTable[range - 1].size = length; + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Clear_CodeRange */ + /* */ + /* */ + /* Clears a code range. */ + /* */ + /* */ + /* range :: The code range index. */ + /* */ + /* */ + /* exec :: The target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Does not set the Error variable. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Clear_CodeRange( TT_ExecContext exec, + FT_Int range ) + { + FT_ASSERT( range >= 1 && range <= 3 ); + + exec->codeRangeTable[range - 1].base = NULL; + exec->codeRangeTable[range - 1].size = 0; + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* EXECUTION CONTEXT ROUTINES */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Destroy_Context */ + /* */ + /* */ + /* Destroys a given context. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* memory :: A handle to the parent memory object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Destroy_Context( TT_ExecContext exec, + FT_Memory memory ) + { + /* free composite load stack */ + FT_FREE( exec->loadStack ); + exec->loadSize = 0; + + /* points zone */ + exec->maxPoints = 0; + exec->maxContours = 0; + + /* free stack */ + FT_FREE( exec->stack ); + exec->stackSize = 0; + + /* free call stack */ + FT_FREE( exec->callStack ); + exec->callSize = 0; + exec->callTop = 0; + + /* free glyph code range */ + FT_FREE( exec->glyphIns ); + exec->glyphSize = 0; + + exec->size = NULL; + exec->face = NULL; + + FT_FREE( exec ); + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Init_Context */ + /* */ + /* */ + /* Initializes a context object. */ + /* */ + /* */ + /* memory :: A handle to the parent memory object. */ + /* */ + /* face :: A handle to the source TrueType face object. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + static FT_Error + Init_Context( TT_ExecContext exec, + TT_Face face, + FT_Memory memory ) + { + FT_Error error; + + + FT_TRACE1(( "Init_Context: new object at 0x%08p, parent = 0x%08p\n", + exec, face )); + + exec->memory = memory; + exec->callSize = 32; + + if ( FT_NEW_ARRAY( exec->callStack, exec->callSize ) ) + goto Fail_Memory; + + /* all values in the context are set to 0 already, but this is */ + /* here as a remainder */ + exec->maxPoints = 0; + exec->maxContours = 0; + + exec->stackSize = 0; + exec->loadSize = 0; + exec->glyphSize = 0; + + exec->stack = NULL; + exec->loadStack = NULL; + exec->glyphIns = NULL; + + exec->face = face; + exec->size = NULL; + + return TT_Err_Ok; + + Fail_Memory: + FT_ERROR(( "Init_Context: not enough memory for 0x%08lx\n", + (FT_Long)exec )); + TT_Destroy_Context( exec, memory ); + + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Update_Max */ + /* */ + /* */ + /* Checks the size of a buffer and reallocates it if necessary. */ + /* */ + /* */ + /* memory :: A handle to the parent memory object. */ + /* */ + /* multiplier :: The size in bytes of each element in the buffer. */ + /* */ + /* new_max :: The new capacity (size) of the buffer. */ + /* */ + /* */ + /* size :: The address of the buffer's current size expressed */ + /* in elements. */ + /* */ + /* buff :: The address of the buffer base pointer. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + static FT_Error + Update_Max( FT_Memory memory, + FT_ULong* size, + FT_Long multiplier, + void** buff, + FT_ULong new_max ) + { + FT_Error error; + + + if ( *size < new_max ) + { + FT_FREE( *buff ); + if ( FT_ALLOC( *buff, new_max * multiplier ) ) + return error; + *size = new_max; + } + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Load_Context */ + /* */ + /* */ + /* Prepare an execution context for glyph hinting. */ + /* */ + /* */ + /* face :: A handle to the source face object. */ + /* */ + /* size :: A handle to the source size object. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Load_Context( TT_ExecContext exec, + TT_Face face, + TT_Size size ) + { + FT_Int i; + FT_ULong tmp; + TT_MaxProfile* maxp; + FT_Error error; + + + exec->face = face; + maxp = &face->max_profile; + exec->size = size; + + if ( size ) + { + exec->numFDefs = size->num_function_defs; + exec->maxFDefs = size->max_function_defs; + exec->numIDefs = size->num_instruction_defs; + exec->maxIDefs = size->max_instruction_defs; + exec->FDefs = size->function_defs; + exec->IDefs = size->instruction_defs; + exec->tt_metrics = size->ttmetrics; + exec->metrics = size->root.metrics; + + exec->maxFunc = size->max_func; + exec->maxIns = size->max_ins; + + for ( i = 0; i < TT_MAX_CODE_RANGES; i++ ) + exec->codeRangeTable[i] = size->codeRangeTable[i]; + + /* set graphics state */ + exec->GS = size->GS; + + exec->cvtSize = size->cvt_size; + exec->cvt = size->cvt; + + exec->storeSize = size->storage_size; + exec->storage = size->storage; + + exec->twilight = size->twilight; + } + + error = Update_Max( exec->memory, + &exec->loadSize, + sizeof ( TT_SubGlyphRec ), + (void**)&exec->loadStack, + exec->face->max_components + 1 ); + if ( error ) + return error; + + /* XXX: We reserve a little more elements on the stack to deal safely */ + /* with broken fonts like arialbs, courbs, timesbs, etc. */ + tmp = exec->stackSize; + error = Update_Max( exec->memory, + &tmp, + sizeof ( FT_F26Dot6 ), + (void**)&exec->stack, + maxp->maxStackElements + 32 ); + exec->stackSize = (FT_UInt)tmp; + if ( error ) + return error; + + tmp = exec->glyphSize; + error = Update_Max( exec->memory, + &tmp, + sizeof ( FT_Byte ), + (void**)&exec->glyphIns, + maxp->maxSizeOfInstructions ); + exec->glyphSize = (FT_UShort)tmp; + if ( error ) + return error; + + exec->pts.n_points = 0; + exec->pts.n_contours = 0; + + exec->instruction_trap = FALSE; + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Save_Context */ + /* */ + /* */ + /* Saves the code ranges in a `size' object. */ + /* */ + /* */ + /* exec :: A handle to the source execution context. */ + /* */ + /* */ + /* size :: A handle to the target size object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Save_Context( TT_ExecContext exec, + TT_Size size ) + { + FT_Int i; + + + /* XXXX: Will probably disappear soon with all the code range */ + /* management, which is now rather obsolete. */ + /* */ + size->num_function_defs = exec->numFDefs; + size->num_instruction_defs = exec->numIDefs; + + size->max_func = exec->maxFunc; + size->max_ins = exec->maxIns; + + for ( i = 0; i < TT_MAX_CODE_RANGES; i++ ) + size->codeRangeTable[i] = exec->codeRangeTable[i]; + + return TT_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Run_Context */ + /* */ + /* */ + /* Executes one or more instructions in the execution context. */ + /* */ + /* */ + /* debug :: A Boolean flag. If set, the function sets some internal */ + /* variables and returns immediately, otherwise TT_RunIns() */ + /* is called. */ + /* */ + /* This is commented out currently. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* */ + /* TrueTyoe error code. 0 means success. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Run_Context( TT_ExecContext exec, + FT_Bool debug ) + { + FT_Error error; + + + if ( ( error = TT_Goto_CodeRange( exec, tt_coderange_glyph, 0 ) ) + != TT_Err_Ok ) + return error; + + exec->zp0 = exec->pts; + exec->zp1 = exec->pts; + exec->zp2 = exec->pts; + + exec->GS.gep0 = 1; + exec->GS.gep1 = 1; + exec->GS.gep2 = 1; + + exec->GS.projVector.x = 0x4000; + exec->GS.projVector.y = 0x0000; + + exec->GS.freeVector = exec->GS.projVector; + exec->GS.dualVector = exec->GS.projVector; + + exec->GS.round_state = 1; + exec->GS.loop = 1; + + /* some glyphs leave something on the stack. so we clean it */ + /* before a new execution. */ + exec->top = 0; + exec->callTop = 0; + +#if 1 + FT_UNUSED( debug ); + + return exec->face->interpreter( exec ); +#else + if ( !debug ) + return TT_RunIns( exec ); + else + return TT_Err_Ok; +#endif + } + + + const TT_GraphicsState tt_default_graphics_state = + { + 0, 0, 0, + { 0x4000, 0 }, + { 0x4000, 0 }, + { 0x4000, 0 }, + 1, 64, 1, + TRUE, 68, 0, 0, 9, 3, + 0, FALSE, 2, 1, 1, 1 + }; + + + /* documentation is in ttinterp.h */ + + FT_EXPORT_DEF( TT_ExecContext ) + TT_New_Context( TT_Face face ) + { + TT_Driver driver; + TT_ExecContext exec; + FT_Memory memory; + + + if ( !face ) + return 0; + + driver = (TT_Driver)face->root.driver; + + memory = driver->root.root.memory; + exec = driver->context; + + if ( !driver->context ) + { + FT_Error error; + + + /* allocate object */ + if ( FT_NEW( exec ) ) + goto Exit; + + /* initialize it */ + error = Init_Context( exec, face, memory ); + if ( error ) + goto Fail; + + /* store it into the driver */ + driver->context = exec; + } + + Exit: + return driver->context; + + Fail: + FT_FREE( exec ); + + return 0; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Done_Context */ + /* */ + /* */ + /* Discards an execution context. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Done_Context( TT_ExecContext exec ) + { + /* Nothing at all for now */ + FT_UNUSED( exec ); + + return TT_Err_Ok; + } + + + + /*************************************************************************/ + /* */ + /* Before an opcode is executed, the interpreter verifies that there are */ + /* enough arguments on the stack, with the help of the Pop_Push_Count */ + /* table. */ + /* */ + /* For each opcode, the first column gives the number of arguments that */ + /* are popped from the stack; the second one gives the number of those */ + /* that are pushed in result. */ + /* */ + /* Note that for opcodes with a varying number of parameters, either 0 */ + /* or 1 arg is verified before execution, depending on the nature of the */ + /* instruction: */ + /* */ + /* - if the number of arguments is given by the bytecode stream or the */ + /* loop variable, 0 is chosen. */ + /* */ + /* - if the first argument is a count n that is followed by arguments */ + /* a1 .. an, then 1 is chosen. */ + /* */ + /*************************************************************************/ + + +#undef PACK +#define PACK( x, y ) ( ( x << 4 ) | y ) + + + static + const FT_Byte Pop_Push_Count[256] = + { + /* opcodes are gathered in groups of 16 */ + /* please keep the spaces as they are */ + + /* SVTCA y */ PACK( 0, 0 ), + /* SVTCA x */ PACK( 0, 0 ), + /* SPvTCA y */ PACK( 0, 0 ), + /* SPvTCA x */ PACK( 0, 0 ), + /* SFvTCA y */ PACK( 0, 0 ), + /* SFvTCA x */ PACK( 0, 0 ), + /* SPvTL // */ PACK( 2, 0 ), + /* SPvTL + */ PACK( 2, 0 ), + /* SFvTL // */ PACK( 2, 0 ), + /* SFvTL + */ PACK( 2, 0 ), + /* SPvFS */ PACK( 2, 0 ), + /* SFvFS */ PACK( 2, 0 ), + /* GPV */ PACK( 0, 2 ), + /* GFV */ PACK( 0, 2 ), + /* SFvTPv */ PACK( 0, 0 ), + /* ISECT */ PACK( 5, 0 ), + + /* SRP0 */ PACK( 1, 0 ), + /* SRP1 */ PACK( 1, 0 ), + /* SRP2 */ PACK( 1, 0 ), + /* SZP0 */ PACK( 1, 0 ), + /* SZP1 */ PACK( 1, 0 ), + /* SZP2 */ PACK( 1, 0 ), + /* SZPS */ PACK( 1, 0 ), + /* SLOOP */ PACK( 1, 0 ), + /* RTG */ PACK( 0, 0 ), + /* RTHG */ PACK( 0, 0 ), + /* SMD */ PACK( 1, 0 ), + /* ELSE */ PACK( 0, 0 ), + /* JMPR */ PACK( 1, 0 ), + /* SCvTCi */ PACK( 1, 0 ), + /* SSwCi */ PACK( 1, 0 ), + /* SSW */ PACK( 1, 0 ), + + /* DUP */ PACK( 1, 2 ), + /* POP */ PACK( 1, 0 ), + /* CLEAR */ PACK( 0, 0 ), + /* SWAP */ PACK( 2, 2 ), + /* DEPTH */ PACK( 0, 1 ), + /* CINDEX */ PACK( 1, 1 ), + /* MINDEX */ PACK( 1, 0 ), + /* AlignPTS */ PACK( 2, 0 ), + /* INS_$28 */ PACK( 0, 0 ), + /* UTP */ PACK( 1, 0 ), + /* LOOPCALL */ PACK( 2, 0 ), + /* CALL */ PACK( 1, 0 ), + /* FDEF */ PACK( 1, 0 ), + /* ENDF */ PACK( 0, 0 ), + /* MDAP[0] */ PACK( 1, 0 ), + /* MDAP[1] */ PACK( 1, 0 ), + + /* IUP[0] */ PACK( 0, 0 ), + /* IUP[1] */ PACK( 0, 0 ), + /* SHP[0] */ PACK( 0, 0 ), + /* SHP[1] */ PACK( 0, 0 ), + /* SHC[0] */ PACK( 1, 0 ), + /* SHC[1] */ PACK( 1, 0 ), + /* SHZ[0] */ PACK( 1, 0 ), + /* SHZ[1] */ PACK( 1, 0 ), + /* SHPIX */ PACK( 1, 0 ), + /* IP */ PACK( 0, 0 ), + /* MSIRP[0] */ PACK( 2, 0 ), + /* MSIRP[1] */ PACK( 2, 0 ), + /* AlignRP */ PACK( 0, 0 ), + /* RTDG */ PACK( 0, 0 ), + /* MIAP[0] */ PACK( 2, 0 ), + /* MIAP[1] */ PACK( 2, 0 ), + + /* NPushB */ PACK( 0, 0 ), + /* NPushW */ PACK( 0, 0 ), + /* WS */ PACK( 2, 0 ), + /* RS */ PACK( 1, 1 ), + /* WCvtP */ PACK( 2, 0 ), + /* RCvt */ PACK( 1, 1 ), + /* GC[0] */ PACK( 1, 1 ), + /* GC[1] */ PACK( 1, 1 ), + /* SCFS */ PACK( 2, 0 ), + /* MD[0] */ PACK( 2, 1 ), + /* MD[1] */ PACK( 2, 1 ), + /* MPPEM */ PACK( 0, 1 ), + /* MPS */ PACK( 0, 1 ), + /* FlipON */ PACK( 0, 0 ), + /* FlipOFF */ PACK( 0, 0 ), + /* DEBUG */ PACK( 1, 0 ), + + /* LT */ PACK( 2, 1 ), + /* LTEQ */ PACK( 2, 1 ), + /* GT */ PACK( 2, 1 ), + /* GTEQ */ PACK( 2, 1 ), + /* EQ */ PACK( 2, 1 ), + /* NEQ */ PACK( 2, 1 ), + /* ODD */ PACK( 1, 1 ), + /* EVEN */ PACK( 1, 1 ), + /* IF */ PACK( 1, 0 ), + /* EIF */ PACK( 0, 0 ), + /* AND */ PACK( 2, 1 ), + /* OR */ PACK( 2, 1 ), + /* NOT */ PACK( 1, 1 ), + /* DeltaP1 */ PACK( 1, 0 ), + /* SDB */ PACK( 1, 0 ), + /* SDS */ PACK( 1, 0 ), + + /* ADD */ PACK( 2, 1 ), + /* SUB */ PACK( 2, 1 ), + /* DIV */ PACK( 2, 1 ), + /* MUL */ PACK( 2, 1 ), + /* ABS */ PACK( 1, 1 ), + /* NEG */ PACK( 1, 1 ), + /* FLOOR */ PACK( 1, 1 ), + /* CEILING */ PACK( 1, 1 ), + /* ROUND[0] */ PACK( 1, 1 ), + /* ROUND[1] */ PACK( 1, 1 ), + /* ROUND[2] */ PACK( 1, 1 ), + /* ROUND[3] */ PACK( 1, 1 ), + /* NROUND[0] */ PACK( 1, 1 ), + /* NROUND[1] */ PACK( 1, 1 ), + /* NROUND[2] */ PACK( 1, 1 ), + /* NROUND[3] */ PACK( 1, 1 ), + + /* WCvtF */ PACK( 2, 0 ), + /* DeltaP2 */ PACK( 1, 0 ), + /* DeltaP3 */ PACK( 1, 0 ), + /* DeltaCn[0] */ PACK( 1, 0 ), + /* DeltaCn[1] */ PACK( 1, 0 ), + /* DeltaCn[2] */ PACK( 1, 0 ), + /* SROUND */ PACK( 1, 0 ), + /* S45Round */ PACK( 1, 0 ), + /* JROT */ PACK( 2, 0 ), + /* JROF */ PACK( 2, 0 ), + /* ROFF */ PACK( 0, 0 ), + /* INS_$7B */ PACK( 0, 0 ), + /* RUTG */ PACK( 0, 0 ), + /* RDTG */ PACK( 0, 0 ), + /* SANGW */ PACK( 1, 0 ), + /* AA */ PACK( 1, 0 ), + + /* FlipPT */ PACK( 0, 0 ), + /* FlipRgON */ PACK( 2, 0 ), + /* FlipRgOFF */ PACK( 2, 0 ), + /* INS_$83 */ PACK( 0, 0 ), + /* INS_$84 */ PACK( 0, 0 ), + /* ScanCTRL */ PACK( 1, 0 ), + /* SDVPTL[0] */ PACK( 2, 0 ), + /* SDVPTL[1] */ PACK( 2, 0 ), + /* GetINFO */ PACK( 1, 1 ), + /* IDEF */ PACK( 1, 0 ), + /* ROLL */ PACK( 3, 3 ), + /* MAX */ PACK( 2, 1 ), + /* MIN */ PACK( 2, 1 ), + /* ScanTYPE */ PACK( 1, 0 ), + /* InstCTRL */ PACK( 2, 0 ), + /* INS_$8F */ PACK( 0, 0 ), + + /* INS_$90 */ PACK( 0, 0 ), + /* INS_$91 */ PACK( 0, 0 ), + /* INS_$92 */ PACK( 0, 0 ), + /* INS_$93 */ PACK( 0, 0 ), + /* INS_$94 */ PACK( 0, 0 ), + /* INS_$95 */ PACK( 0, 0 ), + /* INS_$96 */ PACK( 0, 0 ), + /* INS_$97 */ PACK( 0, 0 ), + /* INS_$98 */ PACK( 0, 0 ), + /* INS_$99 */ PACK( 0, 0 ), + /* INS_$9A */ PACK( 0, 0 ), + /* INS_$9B */ PACK( 0, 0 ), + /* INS_$9C */ PACK( 0, 0 ), + /* INS_$9D */ PACK( 0, 0 ), + /* INS_$9E */ PACK( 0, 0 ), + /* INS_$9F */ PACK( 0, 0 ), + + /* INS_$A0 */ PACK( 0, 0 ), + /* INS_$A1 */ PACK( 0, 0 ), + /* INS_$A2 */ PACK( 0, 0 ), + /* INS_$A3 */ PACK( 0, 0 ), + /* INS_$A4 */ PACK( 0, 0 ), + /* INS_$A5 */ PACK( 0, 0 ), + /* INS_$A6 */ PACK( 0, 0 ), + /* INS_$A7 */ PACK( 0, 0 ), + /* INS_$A8 */ PACK( 0, 0 ), + /* INS_$A9 */ PACK( 0, 0 ), + /* INS_$AA */ PACK( 0, 0 ), + /* INS_$AB */ PACK( 0, 0 ), + /* INS_$AC */ PACK( 0, 0 ), + /* INS_$AD */ PACK( 0, 0 ), + /* INS_$AE */ PACK( 0, 0 ), + /* INS_$AF */ PACK( 0, 0 ), + + /* PushB[0] */ PACK( 0, 1 ), + /* PushB[1] */ PACK( 0, 2 ), + /* PushB[2] */ PACK( 0, 3 ), + /* PushB[3] */ PACK( 0, 4 ), + /* PushB[4] */ PACK( 0, 5 ), + /* PushB[5] */ PACK( 0, 6 ), + /* PushB[6] */ PACK( 0, 7 ), + /* PushB[7] */ PACK( 0, 8 ), + /* PushW[0] */ PACK( 0, 1 ), + /* PushW[1] */ PACK( 0, 2 ), + /* PushW[2] */ PACK( 0, 3 ), + /* PushW[3] */ PACK( 0, 4 ), + /* PushW[4] */ PACK( 0, 5 ), + /* PushW[5] */ PACK( 0, 6 ), + /* PushW[6] */ PACK( 0, 7 ), + /* PushW[7] */ PACK( 0, 8 ), + + /* MDRP[00] */ PACK( 1, 0 ), + /* MDRP[01] */ PACK( 1, 0 ), + /* MDRP[02] */ PACK( 1, 0 ), + /* MDRP[03] */ PACK( 1, 0 ), + /* MDRP[04] */ PACK( 1, 0 ), + /* MDRP[05] */ PACK( 1, 0 ), + /* MDRP[06] */ PACK( 1, 0 ), + /* MDRP[07] */ PACK( 1, 0 ), + /* MDRP[08] */ PACK( 1, 0 ), + /* MDRP[09] */ PACK( 1, 0 ), + /* MDRP[10] */ PACK( 1, 0 ), + /* MDRP[11] */ PACK( 1, 0 ), + /* MDRP[12] */ PACK( 1, 0 ), + /* MDRP[13] */ PACK( 1, 0 ), + /* MDRP[14] */ PACK( 1, 0 ), + /* MDRP[15] */ PACK( 1, 0 ), + + /* MDRP[16] */ PACK( 1, 0 ), + /* MDRP[17] */ PACK( 1, 0 ), + /* MDRP[18] */ PACK( 1, 0 ), + /* MDRP[19] */ PACK( 1, 0 ), + /* MDRP[20] */ PACK( 1, 0 ), + /* MDRP[21] */ PACK( 1, 0 ), + /* MDRP[22] */ PACK( 1, 0 ), + /* MDRP[23] */ PACK( 1, 0 ), + /* MDRP[24] */ PACK( 1, 0 ), + /* MDRP[25] */ PACK( 1, 0 ), + /* MDRP[26] */ PACK( 1, 0 ), + /* MDRP[27] */ PACK( 1, 0 ), + /* MDRP[28] */ PACK( 1, 0 ), + /* MDRP[29] */ PACK( 1, 0 ), + /* MDRP[30] */ PACK( 1, 0 ), + /* MDRP[31] */ PACK( 1, 0 ), + + /* MIRP[00] */ PACK( 2, 0 ), + /* MIRP[01] */ PACK( 2, 0 ), + /* MIRP[02] */ PACK( 2, 0 ), + /* MIRP[03] */ PACK( 2, 0 ), + /* MIRP[04] */ PACK( 2, 0 ), + /* MIRP[05] */ PACK( 2, 0 ), + /* MIRP[06] */ PACK( 2, 0 ), + /* MIRP[07] */ PACK( 2, 0 ), + /* MIRP[08] */ PACK( 2, 0 ), + /* MIRP[09] */ PACK( 2, 0 ), + /* MIRP[10] */ PACK( 2, 0 ), + /* MIRP[11] */ PACK( 2, 0 ), + /* MIRP[12] */ PACK( 2, 0 ), + /* MIRP[13] */ PACK( 2, 0 ), + /* MIRP[14] */ PACK( 2, 0 ), + /* MIRP[15] */ PACK( 2, 0 ), + + /* MIRP[16] */ PACK( 2, 0 ), + /* MIRP[17] */ PACK( 2, 0 ), + /* MIRP[18] */ PACK( 2, 0 ), + /* MIRP[19] */ PACK( 2, 0 ), + /* MIRP[20] */ PACK( 2, 0 ), + /* MIRP[21] */ PACK( 2, 0 ), + /* MIRP[22] */ PACK( 2, 0 ), + /* MIRP[23] */ PACK( 2, 0 ), + /* MIRP[24] */ PACK( 2, 0 ), + /* MIRP[25] */ PACK( 2, 0 ), + /* MIRP[26] */ PACK( 2, 0 ), + /* MIRP[27] */ PACK( 2, 0 ), + /* MIRP[28] */ PACK( 2, 0 ), + /* MIRP[29] */ PACK( 2, 0 ), + /* MIRP[30] */ PACK( 2, 0 ), + /* MIRP[31] */ PACK( 2, 0 ) + }; + + + static + const FT_Char opcode_length[256] = + { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + -1,-1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 2, 3, 4, 5, 6, 7, 8, 9, 3, 5, 7, 9, 11,13,15,17, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 + }; + + static + const FT_Vector Null_Vector = {0,0}; + + +#undef PACK + + +#undef NULL_Vector +#define NULL_Vector (FT_Vector*)&Null_Vector + + + /* compute (a*b)/2^14 with maximal accuracy and rounding */ + static FT_Int32 + TT_MulFix14( FT_Int32 a, + FT_Int b ) + { + FT_Int32 m, s, hi; + FT_UInt32 l, lo; + + + /* compute ax*bx as 64-bit value */ + l = (FT_UInt32)( ( a & 0xFFFFU ) * b ); + m = ( a >> 16 ) * b; + + lo = l + (FT_UInt32)( m << 16 ); + hi = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo < l ); + + /* divide the result by 2^14 with rounding */ + s = hi >> 31; + l = lo + (FT_UInt32)s; + hi += s + ( l < lo ); + lo = l; + + l = lo + 0x2000U; + hi += (l < lo); + + return ( hi << 18 ) | ( l >> 14 ); + } + + + /* compute (ax*bx+ay*by)/2^14 with maximal accuracy and rounding */ + static FT_Int32 + TT_DotFix14( FT_Int32 ax, + FT_Int32 ay, + FT_Int bx, + FT_Int by ) + { + FT_Int32 m, s, hi1, hi2, hi; + FT_UInt32 l, lo1, lo2, lo; + + + /* compute ax*bx as 64-bit value */ + l = (FT_UInt32)( ( ax & 0xFFFFU ) * bx ); + m = ( ax >> 16 ) * bx; + + lo1 = l + (FT_UInt32)( m << 16 ); + hi1 = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo1 < l ); + + /* compute ay*by as 64-bit value */ + l = (FT_UInt32)( ( ay & 0xFFFFU ) * by ); + m = ( ay >> 16 ) * by; + + lo2 = l + (FT_UInt32)( m << 16 ); + hi2 = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo2 < l ); + + /* add them */ + lo = lo1 + lo2; + hi = hi1 + hi2 + ( lo < lo1 ); + + /* divide the result by 2^14 with rounding */ + s = hi >> 31; + l = lo + (FT_UInt32)s; + hi += s + ( l < lo ); + lo = l; + + l = lo + 0x2000U; + hi += ( l < lo ); + + return ( hi << 18 ) | ( l >> 14 ); + } + + + /* return length of given vector */ + +#if 0 + + static FT_Int32 + TT_VecLen( FT_Int32 x, + FT_Int32 y ) + { + FT_Int32 m, hi1, hi2, hi; + FT_UInt32 l, lo1, lo2, lo; + + + /* compute x*x as 64-bit value */ + lo = (FT_UInt32)( x & 0xFFFFU ); + hi = x >> 16; + + l = lo * lo; + m = hi * lo; + hi = hi * hi; + + lo1 = l + (FT_UInt32)( m << 17 ); + hi1 = hi + ( m >> 15 ) + ( lo1 < l ); + + /* compute y*y as 64-bit value */ + lo = (FT_UInt32)( y & 0xFFFFU ); + hi = y >> 16; + + l = lo * lo; + m = hi * lo; + hi = hi * hi; + + lo2 = l + (FT_UInt32)( m << 17 ); + hi2 = hi + ( m >> 15 ) + ( lo2 < l ); + + /* add them to get 'x*x+y*y' as 64-bit value */ + lo = lo1 + lo2; + hi = hi1 + hi2 + ( lo < lo1 ); + + /* compute the square root of this value */ + { + FT_UInt32 root, rem, test_div; + FT_Int count; + + + root = 0; + + { + rem = 0; + count = 32; + do + { + rem = ( rem << 2 ) | ( (FT_UInt32)hi >> 30 ); + hi = ( hi << 2 ) | ( lo >> 30 ); + lo <<= 2; + root <<= 1; + test_div = ( root << 1 ) + 1; + + if ( rem >= test_div ) + { + rem -= test_div; + root += 1; + } + } while ( --count ); + } + + return (FT_Int32)root; + } + } + +#else + + /* this version uses FT_Vector_Length which computes the same value */ + /* much, much faster.. */ + /* */ + static FT_F26Dot6 + TT_VecLen( FT_F26Dot6 X, + FT_F26Dot6 Y ) + { + FT_Vector v; + + + v.x = X; + v.y = Y; + + return FT_Vector_Length( &v ); + } + +#endif + + + /*************************************************************************/ + /* */ + /* */ + /* Current_Ratio */ + /* */ + /* */ + /* Returns the current aspect ratio scaling factor depending on the */ + /* projection vector's state and device resolutions. */ + /* */ + /* */ + /* The aspect ratio in 16.16 format, always <= 1.0 . */ + /* */ + static FT_Long + Current_Ratio( EXEC_OP ) + { + if ( CUR.tt_metrics.ratio ) + return CUR.tt_metrics.ratio; + + if ( CUR.GS.projVector.y == 0 ) + CUR.tt_metrics.ratio = CUR.tt_metrics.x_ratio; + + else if ( CUR.GS.projVector.x == 0 ) + CUR.tt_metrics.ratio = CUR.tt_metrics.y_ratio; + + else + { + FT_Long x, y; + + x = TT_MULDIV( CUR.GS.projVector.x, CUR.tt_metrics.x_ratio, 0x4000 ); + y = TT_MULDIV( CUR.GS.projVector.y, CUR.tt_metrics.y_ratio, 0x4000 ); + CUR.tt_metrics.ratio = TT_VecLen( x, y ); + } + + return CUR.tt_metrics.ratio; + } + + + static FT_Long + Current_Ppem( EXEC_OP ) + { + return TT_MULFIX( CUR.tt_metrics.ppem, CURRENT_Ratio() ); + } + + + /*************************************************************************/ + /* */ + /* Functions related to the control value table (CVT). */ + /* */ + /*************************************************************************/ + + + FT_CALLBACK_DEF( FT_F26Dot6 ) + Read_CVT( EXEC_OP_ FT_ULong idx ) + { + return CUR.cvt[idx]; + } + + + FT_CALLBACK_DEF( FT_F26Dot6 ) + Read_CVT_Stretched( EXEC_OP_ FT_ULong idx ) + { + return TT_MULFIX( CUR.cvt[idx], CURRENT_Ratio() ); + } + + + FT_CALLBACK_DEF( void ) + Write_CVT( EXEC_OP_ FT_ULong idx, + FT_F26Dot6 value ) + { + CUR.cvt[idx] = value; + } + + + FT_CALLBACK_DEF( void ) + Write_CVT_Stretched( EXEC_OP_ FT_ULong idx, + FT_F26Dot6 value ) + { + CUR.cvt[idx] = FT_DivFix( value, CURRENT_Ratio() ); + } + + + FT_CALLBACK_DEF( void ) + Move_CVT( EXEC_OP_ FT_ULong idx, + FT_F26Dot6 value ) + { + CUR.cvt[idx] += value; + } + + + FT_CALLBACK_DEF( void ) + Move_CVT_Stretched( EXEC_OP_ FT_ULong idx, + FT_F26Dot6 value ) + { + CUR.cvt[idx] += FT_DivFix( value, CURRENT_Ratio() ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* GetShortIns */ + /* */ + /* */ + /* Returns a short integer taken from the instruction stream at */ + /* address IP. */ + /* */ + /* */ + /* Short read at code[IP]. */ + /* */ + /* */ + /* This one could become a macro. */ + /* */ + static FT_Short + GetShortIns( EXEC_OP ) + { + /* Reading a byte stream so there is no endianess (DaveP) */ + CUR.IP += 2; + return (FT_Short)( ( CUR.code[CUR.IP - 2] << 8 ) + + CUR.code[CUR.IP - 1] ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Ins_Goto_CodeRange */ + /* */ + /* */ + /* Goes to a certain code range in the instruction stream. */ + /* */ + /* */ + /* aRange :: The index of the code range. */ + /* */ + /* aIP :: The new IP address in the code range. */ + /* */ + /* */ + /* SUCCESS or FAILURE. */ + /* */ + static FT_Bool + Ins_Goto_CodeRange( EXEC_OP_ FT_Int aRange, + FT_ULong aIP ) + { + TT_CodeRange* range; + + + if ( aRange < 1 || aRange > 3 ) + { + CUR.error = TT_Err_Bad_Argument; + return FAILURE; + } + + range = &CUR.codeRangeTable[aRange - 1]; + + if ( range->base == NULL ) /* invalid coderange */ + { + CUR.error = TT_Err_Invalid_CodeRange; + return FAILURE; + } + + /* NOTE: Because the last instruction of a program may be a CALL */ + /* which will return to the first byte *after* the code */ + /* range, we test for AIP <= Size, instead of AIP < Size. */ + + if ( aIP > range->size ) + { + CUR.error = TT_Err_Code_Overflow; + return FAILURE; + } + + CUR.code = range->base; + CUR.codeSize = range->size; + CUR.IP = aIP; + CUR.curRange = aRange; + + return SUCCESS; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Direct_Move */ + /* */ + /* */ + /* Moves a point by a given distance along the freedom vector. The */ + /* point will be `touched'. */ + /* */ + /* */ + /* point :: The index of the point to move. */ + /* */ + /* distance :: The distance to apply. */ + /* */ + /* */ + /* zone :: The affected glyph zone. */ + /* */ + static void + Direct_Move( EXEC_OP_ TT_GlyphZone zone, + FT_UShort point, + FT_F26Dot6 distance ) + { + FT_F26Dot6 v; + + + v = CUR.GS.freeVector.x; + + if ( v != 0 ) + { + +#ifdef NO_APPLE_PATENT + + if ( ABS( CUR.F_dot_P ) > APPLE_THRESHOLD ) + zone->cur[point].x += distance; + +#else + + zone->cur[point].x += TT_MULDIV( distance, + v * 0x10000L, + CUR.F_dot_P ); + +#endif + + zone->tags[point] |= FT_Curve_Tag_Touch_X; + } + + v = CUR.GS.freeVector.y; + + if ( v != 0 ) + { + +#ifdef NO_APPLE_PATENT + + if ( ABS( CUR.F_dot_P ) > APPLE_THRESHOLD ) + zone->cur[point].y += distance; + +#else + + zone->cur[point].y += TT_MULDIV( distance, + v * 0x10000L, + CUR.F_dot_P ); + +#endif + + zone->tags[point] |= FT_Curve_Tag_Touch_Y; + } + } + + + /*************************************************************************/ + /* */ + /* Special versions of Direct_Move() */ + /* */ + /* The following versions are used whenever both vectors are both */ + /* along one of the coordinate unit vectors, i.e. in 90% of the cases. */ + /* */ + /*************************************************************************/ + + + static void + Direct_Move_X( EXEC_OP_ TT_GlyphZone zone, + FT_UShort point, + FT_F26Dot6 distance ) + { + FT_UNUSED_EXEC; + + zone->cur[point].x += distance; + zone->tags[point] |= FT_Curve_Tag_Touch_X; + } + + + static void + Direct_Move_Y( EXEC_OP_ TT_GlyphZone zone, + FT_UShort point, + FT_F26Dot6 distance ) + { + FT_UNUSED_EXEC; + + zone->cur[point].y += distance; + zone->tags[point] |= FT_Curve_Tag_Touch_Y; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_None */ + /* */ + /* */ + /* Does not round, but adds engine compensation. */ + /* */ + /* */ + /* distance :: The distance (not) to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* The compensated distance. */ + /* */ + /* */ + /* The TrueType specification says very few about the relationship */ + /* between rounding and engine compensation. However, it seems from */ + /* the description of super round that we should add the compensation */ + /* before rounding. */ + /* */ + static FT_F26Dot6 + Round_None( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + FT_UNUSED_EXEC; + + + if ( distance >= 0 ) + { + val = distance + compensation; + if ( val < 0 ) + val = 0; + } + else { + val = distance - compensation; + if ( val > 0 ) + val = 0; + } + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_To_Grid */ + /* */ + /* */ + /* Rounds value to grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + static FT_F26Dot6 + Round_To_Grid( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + FT_UNUSED_EXEC; + + + if ( distance >= 0 ) + { + val = distance + compensation + 32; + if ( val > 0 ) + val &= ~63; + else + val = 0; + } + else + { + val = -( ( compensation - distance + 32 ) & -64 ); + if ( val > 0 ) + val = 0; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_To_Half_Grid */ + /* */ + /* */ + /* Rounds value to half grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + static FT_F26Dot6 + Round_To_Half_Grid( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + FT_UNUSED_EXEC; + + + if ( distance >= 0 ) + { + val = ( ( distance + compensation ) & -64 ) + 32; + if ( val < 0 ) + val = 0; + } + else + { + val = -( ( (compensation - distance) & -64 ) + 32 ); + if ( val > 0 ) + val = 0; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_Down_To_Grid */ + /* */ + /* */ + /* Rounds value down to grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + static FT_F26Dot6 + Round_Down_To_Grid( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + FT_UNUSED_EXEC; + + + if ( distance >= 0 ) + { + val = distance + compensation; + if ( val > 0 ) + val &= ~63; + else + val = 0; + } + else + { + val = -( ( compensation - distance ) & -64 ); + if ( val > 0 ) + val = 0; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_Up_To_Grid */ + /* */ + /* */ + /* Rounds value up to grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + static FT_F26Dot6 + Round_Up_To_Grid( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + + FT_UNUSED_EXEC; + + if ( distance >= 0 ) + { + val = distance + compensation + 63; + if ( val > 0 ) + val &= ~63; + else + val = 0; + } + else + { + val = -( ( compensation - distance + 63 ) & -64 ); + if ( val > 0 ) + val = 0; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_To_Double_Grid */ + /* */ + /* */ + /* Rounds value to double grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + static FT_F26Dot6 + Round_To_Double_Grid( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + FT_UNUSED_EXEC; + + + if ( distance >= 0 ) + { + val = distance + compensation + 16; + if ( val > 0 ) + val &= ~31; + else + val = 0; + } + else + { + val = -( ( compensation - distance + 16 ) & -32 ); + if ( val > 0 ) + val = 0; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_Super */ + /* */ + /* */ + /* Super-rounds value to grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + /* */ + /* The TrueType specification says very few about the relationship */ + /* between rounding and engine compensation. However, it seems from */ + /* the description of super round that we should add the compensation */ + /* before rounding. */ + /* */ + static FT_F26Dot6 + Round_Super( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + + if ( distance >= 0 ) + { + val = ( distance - CUR.phase + CUR.threshold + compensation ) & + -CUR.period; + if ( val < 0 ) + val = 0; + val += CUR.phase; + } + else + { + val = -( ( CUR.threshold - CUR.phase - distance + compensation ) & + -CUR.period ); + if ( val > 0 ) + val = 0; + val -= CUR.phase; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Round_Super_45 */ + /* */ + /* */ + /* Super-rounds value to grid after adding engine compensation. */ + /* */ + /* */ + /* distance :: The distance to round. */ + /* */ + /* compensation :: The engine compensation. */ + /* */ + /* */ + /* Rounded distance. */ + /* */ + /* */ + /* There is a separate function for Round_Super_45() as we may need */ + /* greater precision. */ + /* */ + static FT_F26Dot6 + Round_Super_45( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ) + { + FT_F26Dot6 val; + + + if ( distance >= 0 ) + { + val = ( ( distance - CUR.phase + CUR.threshold + compensation ) / + CUR.period ) * CUR.period; + if ( val < 0 ) + val = 0; + val += CUR.phase; + } + else + { + val = -( ( ( CUR.threshold - CUR.phase - distance + compensation ) / + CUR.period ) * CUR.period ); + if ( val > 0 ) + val = 0; + val -= CUR.phase; + } + + return val; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Compute_Round */ + /* */ + /* */ + /* Sets the rounding mode. */ + /* */ + /* */ + /* round_mode :: The rounding mode to be used. */ + /* */ + static void + Compute_Round( EXEC_OP_ FT_Byte round_mode ) + { + switch ( round_mode ) + { + case TT_Round_Off: + CUR.func_round = (TT_Round_Func)Round_None; + break; + + case TT_Round_To_Grid: + CUR.func_round = (TT_Round_Func)Round_To_Grid; + break; + + case TT_Round_Up_To_Grid: + CUR.func_round = (TT_Round_Func)Round_Up_To_Grid; + break; + + case TT_Round_Down_To_Grid: + CUR.func_round = (TT_Round_Func)Round_Down_To_Grid; + break; + + case TT_Round_To_Half_Grid: + CUR.func_round = (TT_Round_Func)Round_To_Half_Grid; + break; + + case TT_Round_To_Double_Grid: + CUR.func_round = (TT_Round_Func)Round_To_Double_Grid; + break; + + case TT_Round_Super: + CUR.func_round = (TT_Round_Func)Round_Super; + break; + + case TT_Round_Super_45: + CUR.func_round = (TT_Round_Func)Round_Super_45; + break; + } + } + + + /*************************************************************************/ + /* */ + /* */ + /* SetSuperRound */ + /* */ + /* */ + /* Sets Super Round parameters. */ + /* */ + /* */ + /* GridPeriod :: Grid period */ + /* selector :: SROUND opcode */ + /* */ + static void + SetSuperRound( EXEC_OP_ FT_F26Dot6 GridPeriod, + FT_Long selector ) + { + switch ( (FT_Int)( selector & 0xC0 ) ) + { + case 0: + CUR.period = GridPeriod / 2; + break; + + case 0x40: + CUR.period = GridPeriod; + break; + + case 0x80: + CUR.period = GridPeriod * 2; + break; + + /* This opcode is reserved, but... */ + + case 0xC0: + CUR.period = GridPeriod; + break; + } + + switch ( (FT_Int)( selector & 0x30 ) ) + { + case 0: + CUR.phase = 0; + break; + + case 0x10: + CUR.phase = CUR.period / 4; + break; + + case 0x20: + CUR.phase = CUR.period / 2; + break; + + case 0x30: + CUR.phase = GridPeriod * 3 / 4; + break; + } + + if ( (selector & 0x0F) == 0 ) + CUR.threshold = CUR.period - 1; + else + CUR.threshold = ( (FT_Int)( selector & 0x0F ) - 4 ) * CUR.period / 8; + + CUR.period /= 256; + CUR.phase /= 256; + CUR.threshold /= 256; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Project */ + /* */ + /* */ + /* Computes the projection of vector given by (v2-v1) along the */ + /* current projection vector. */ + /* */ + /* */ + /* v1 :: First input vector. */ + /* v2 :: Second input vector. */ + /* */ + /* */ + /* The distance in F26dot6 format. */ + /* */ + static FT_F26Dot6 + Project( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ) + { + return TT_DotFix14( v1->x - v2->x, + v1->y - v2->y, + CUR.GS.projVector.x, + CUR.GS.projVector.y ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Dual_Project */ + /* */ + /* */ + /* Computes the projection of the vector given by (v2-v1) along the */ + /* current dual vector. */ + /* */ + /* */ + /* v1 :: First input vector. */ + /* v2 :: Second input vector. */ + /* */ + /* */ + /* The distance in F26dot6 format. */ + /* */ + static FT_F26Dot6 + Dual_Project( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ) + { + return TT_DotFix14( v1->x - v2->x, + v1->y - v2->y, + CUR.GS.dualVector.x, + CUR.GS.dualVector.y ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Free_Project */ + /* */ + /* */ + /* Computes the projection of the vector given by (v2-v1) along the */ + /* current freedom vector. */ + /* */ + /* */ + /* v1 :: First input vector. */ + /* v2 :: Second input vector. */ + /* */ + /* */ + /* The distance in F26dot6 format. */ + /* */ + static FT_F26Dot6 + Free_Project( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ) + { + return TT_DotFix14( v1->x - v2->x, + v1->y - v2->y, + CUR.GS.freeVector.x, + CUR.GS.freeVector.y ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Project_x */ + /* */ + /* */ + /* Computes the projection of the vector given by (v2-v1) along the */ + /* horizontal axis. */ + /* */ + /* */ + /* v1 :: First input vector. */ + /* v2 :: Second input vector. */ + /* */ + /* */ + /* The distance in F26dot6 format. */ + /* */ + static FT_F26Dot6 + Project_x( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ) + { + FT_UNUSED_EXEC; + + return ( v1->x - v2->x ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Project_y */ + /* */ + /* */ + /* Computes the projection of the vector given by (v2-v1) along the */ + /* vertical axis. */ + /* */ + /* */ + /* v1 :: First input vector. */ + /* v2 :: Second input vector. */ + /* */ + /* */ + /* The distance in F26dot6 format. */ + /* */ + static FT_F26Dot6 + Project_y( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ) + { + FT_UNUSED_EXEC; + + return ( v1->y - v2->y ); + } + + + /*************************************************************************/ + /* */ + /* */ + /* Compute_Funcs */ + /* */ + /* */ + /* Computes the projection and movement function pointers according */ + /* to the current graphics state. */ + /* */ + static void + Compute_Funcs( EXEC_OP ) + { + if ( CUR.GS.freeVector.x == 0x4000 ) + { + CUR.func_freeProj = (TT_Project_Func)Project_x; + CUR.F_dot_P = CUR.GS.projVector.x * 0x10000L; + } + else + { + if ( CUR.GS.freeVector.y == 0x4000 ) + { + CUR.func_freeProj = (TT_Project_Func)Project_y; + CUR.F_dot_P = CUR.GS.projVector.y * 0x10000L; + } + else + { + CUR.func_freeProj = (TT_Project_Func)Free_Project; + CUR.F_dot_P = (FT_Long)CUR.GS.projVector.x * CUR.GS.freeVector.x * 4 + + (FT_Long)CUR.GS.projVector.y * CUR.GS.freeVector.y * 4; + } + } + + if ( CUR.GS.projVector.x == 0x4000 ) + CUR.func_project = (TT_Project_Func)Project_x; + else + { + if ( CUR.GS.projVector.y == 0x4000 ) + CUR.func_project = (TT_Project_Func)Project_y; + else + CUR.func_project = (TT_Project_Func)Project; + } + + if ( CUR.GS.dualVector.x == 0x4000 ) + CUR.func_dualproj = (TT_Project_Func)Project_x; + else + { + if ( CUR.GS.dualVector.y == 0x4000 ) + CUR.func_dualproj = (TT_Project_Func)Project_y; + else + CUR.func_dualproj = (TT_Project_Func)Dual_Project; + } + + CUR.func_move = (TT_Move_Func)Direct_Move; + + if ( CUR.F_dot_P == 0x40000000L ) + { + if ( CUR.GS.freeVector.x == 0x4000 ) + CUR.func_move = (TT_Move_Func)Direct_Move_X; + else + { + if ( CUR.GS.freeVector.y == 0x4000 ) + CUR.func_move = (TT_Move_Func)Direct_Move_Y; + } + } + + /* at small sizes, F_dot_P can become too small, resulting */ + /* in overflows and `spikes' in a number of glyphs like `w'. */ + + if ( ABS( CUR.F_dot_P ) < 0x4000000L ) + CUR.F_dot_P = 0x40000000L; + + /* Disable cached aspect ratio */ + CUR.tt_metrics.ratio = 0; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Normalize */ + /* */ + /* */ + /* Norms a vector. */ + /* */ + /* */ + /* Vx :: The horizontal input vector coordinate. */ + /* Vy :: The vertical input vector coordinate. */ + /* */ + /* */ + /* R :: The normed unit vector. */ + /* */ + /* */ + /* Returns FAILURE if a vector parameter is zero. */ + /* */ + /* */ + /* In case Vx and Vy are both zero, Normalize() returns SUCCESS, and */ + /* R is undefined. */ + /* */ + + + static FT_Bool + Normalize( EXEC_OP_ FT_F26Dot6 Vx, + FT_F26Dot6 Vy, + FT_UnitVector* R ) + { + FT_F26Dot6 W; + FT_Bool S1, S2; + + FT_UNUSED_EXEC; + + + if ( ABS( Vx ) < 0x10000L && ABS( Vy ) < 0x10000L ) + { + Vx *= 0x100; + Vy *= 0x100; + + W = TT_VecLen( Vx, Vy ); + + if ( W == 0 ) + { + /* XXX: UNDOCUMENTED! It seems that it is possible to try */ + /* to normalize the vector (0,0). Return immediately. */ + return SUCCESS; + } + + R->x = (FT_F2Dot14)FT_MulDiv( Vx, 0x4000L, W ); + R->y = (FT_F2Dot14)FT_MulDiv( Vy, 0x4000L, W ); + + return SUCCESS; + } + + W = TT_VecLen( Vx, Vy ); + + Vx = FT_MulDiv( Vx, 0x4000L, W ); + Vy = FT_MulDiv( Vy, 0x4000L, W ); + + W = Vx * Vx + Vy * Vy; + + /* Now, we want that Sqrt( W ) = 0x4000 */ + /* Or 0x1000000 <= W < 0x1004000 */ + + if ( Vx < 0 ) + { + Vx = -Vx; + S1 = TRUE; + } + else + S1 = FALSE; + + if ( Vy < 0 ) + { + Vy = -Vy; + S2 = TRUE; + } + else + S2 = FALSE; + + while ( W < 0x1000000L ) + { + /* We need to increase W by a minimal amount */ + if ( Vx < Vy ) + Vx++; + else + Vy++; + + W = Vx * Vx + Vy * Vy; + } + + while ( W >= 0x1004000L ) + { + /* We need to decrease W by a minimal amount */ + if ( Vx < Vy ) + Vx--; + else + Vy--; + + W = Vx * Vx + Vy * Vy; + } + + /* Note that in various cases, we can only */ + /* compute a Sqrt(W) of 0x3FFF, eg. Vx = Vy */ + + if ( S1 ) + Vx = -Vx; + + if ( S2 ) + Vy = -Vy; + + R->x = (FT_F2Dot14)Vx; /* Type conversion */ + R->y = (FT_F2Dot14)Vy; /* Type conversion */ + + return SUCCESS; + } + + + /*************************************************************************/ + /* */ + /* Here we start with the implementation of the various opcodes. */ + /* */ + /*************************************************************************/ + + + static FT_Bool + Ins_SxVTL( EXEC_OP_ FT_UShort aIdx1, + FT_UShort aIdx2, + FT_Int aOpc, + FT_UnitVector* Vec ) + { + FT_Long A, B, C; + FT_Vector* p1; + FT_Vector* p2; + + + if ( BOUNDS( aIdx1, CUR.zp2.n_points ) || + BOUNDS( aIdx2, CUR.zp1.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return FAILURE; + } + + p1 = CUR.zp1.cur + aIdx2; + p2 = CUR.zp2.cur + aIdx1; + + A = p1->x - p2->x; + B = p1->y - p2->y; + + if ( ( aOpc & 1 ) != 0 ) + { + C = B; /* counter clockwise rotation */ + B = A; + A = -C; + } + + NORMalize( A, B, Vec ); + + return SUCCESS; + } + + + /* When not using the big switch statements, the interpreter uses a */ + /* call table defined later below in this source. Each opcode must */ + /* thus have a corresponding function, even trivial ones. */ + /* */ + /* They are all defined there. */ + +#define DO_SVTCA \ + { \ + FT_Short A, B; \ + \ + \ + A = (FT_Short)( CUR.opcode & 1 ) << 14; \ + B = A ^ (FT_Short)0x4000; \ + \ + CUR.GS.freeVector.x = A; \ + CUR.GS.projVector.x = A; \ + CUR.GS.dualVector.x = A; \ + \ + CUR.GS.freeVector.y = B; \ + CUR.GS.projVector.y = B; \ + CUR.GS.dualVector.y = B; \ + \ + COMPUTE_Funcs(); \ + } + + +#define DO_SPVTCA \ + { \ + FT_Short A, B; \ + \ + \ + A = (FT_Short)( CUR.opcode & 1 ) << 14; \ + B = A ^ (FT_Short)0x4000; \ + \ + CUR.GS.projVector.x = A; \ + CUR.GS.dualVector.x = A; \ + \ + CUR.GS.projVector.y = B; \ + CUR.GS.dualVector.y = B; \ + \ + COMPUTE_Funcs(); \ + } + + +#define DO_SFVTCA \ + { \ + FT_Short A, B; \ + \ + \ + A = (FT_Short)( CUR.opcode & 1 ) << 14; \ + B = A ^ (FT_Short)0x4000; \ + \ + CUR.GS.freeVector.x = A; \ + CUR.GS.freeVector.y = B; \ + \ + COMPUTE_Funcs(); \ + } + + +#define DO_SPVTL \ + if ( INS_SxVTL( (FT_UShort)args[1], \ + (FT_UShort)args[0], \ + CUR.opcode, \ + &CUR.GS.projVector ) == SUCCESS ) \ + { \ + CUR.GS.dualVector = CUR.GS.projVector; \ + COMPUTE_Funcs(); \ + } + + +#define DO_SFVTL \ + if ( INS_SxVTL( (FT_UShort)args[1], \ + (FT_UShort)args[0], \ + CUR.opcode, \ + &CUR.GS.freeVector ) == SUCCESS ) \ + COMPUTE_Funcs(); + + +#define DO_SFVTPV \ + CUR.GS.freeVector = CUR.GS.projVector; \ + COMPUTE_Funcs(); + + +#define DO_SPVFS \ + { \ + FT_Short S; \ + FT_Long X, Y; \ + \ + \ + /* Only use low 16bits, then sign extend */ \ + S = (FT_Short)args[1]; \ + Y = (FT_Long)S; \ + S = (FT_Short)args[0]; \ + X = (FT_Long)S; \ + \ + NORMalize( X, Y, &CUR.GS.projVector ); \ + \ + CUR.GS.dualVector = CUR.GS.projVector; \ + COMPUTE_Funcs(); \ + } + + +#define DO_SFVFS \ + { \ + FT_Short S; \ + FT_Long X, Y; \ + \ + \ + /* Only use low 16bits, then sign extend */ \ + S = (FT_Short)args[1]; \ + Y = (FT_Long)S; \ + S = (FT_Short)args[0]; \ + X = S; \ + \ + NORMalize( X, Y, &CUR.GS.freeVector ); \ + COMPUTE_Funcs(); \ + } + + +#define DO_GPV \ + args[0] = CUR.GS.projVector.x; \ + args[1] = CUR.GS.projVector.y; + + +#define DO_GFV \ + args[0] = CUR.GS.freeVector.x; \ + args[1] = CUR.GS.freeVector.y; + + +#define DO_SRP0 \ + CUR.GS.rp0 = (FT_UShort)args[0]; + + +#define DO_SRP1 \ + CUR.GS.rp1 = (FT_UShort)args[0]; + + +#define DO_SRP2 \ + CUR.GS.rp2 = (FT_UShort)args[0]; + + +#define DO_RTHG \ + CUR.GS.round_state = TT_Round_To_Half_Grid; \ + CUR.func_round = (TT_Round_Func)Round_To_Half_Grid; + + +#define DO_RTG \ + CUR.GS.round_state = TT_Round_To_Grid; \ + CUR.func_round = (TT_Round_Func)Round_To_Grid; + + +#define DO_RTDG \ + CUR.GS.round_state = TT_Round_To_Double_Grid; \ + CUR.func_round = (TT_Round_Func)Round_To_Double_Grid; + + +#define DO_RUTG \ + CUR.GS.round_state = TT_Round_Up_To_Grid; \ + CUR.func_round = (TT_Round_Func)Round_Up_To_Grid; + + +#define DO_RDTG \ + CUR.GS.round_state = TT_Round_Down_To_Grid; \ + CUR.func_round = (TT_Round_Func)Round_Down_To_Grid; + + +#define DO_ROFF \ + CUR.GS.round_state = TT_Round_Off; \ + CUR.func_round = (TT_Round_Func)Round_None; + + +#define DO_SROUND \ + SET_SuperRound( 0x4000, args[0] ); \ + CUR.GS.round_state = TT_Round_Super; \ + CUR.func_round = (TT_Round_Func)Round_Super; + + +#define DO_S45ROUND \ + SET_SuperRound( 0x2D41, args[0] ); \ + CUR.GS.round_state = TT_Round_Super_45; \ + CUR.func_round = (TT_Round_Func)Round_Super_45; + + +#define DO_SLOOP \ + if ( args[0] < 0 ) \ + CUR.error = TT_Err_Bad_Argument; \ + else \ + CUR.GS.loop = args[0]; + + +#define DO_SMD \ + CUR.GS.minimum_distance = args[0]; + + +#define DO_SCVTCI \ + CUR.GS.control_value_cutin = (FT_F26Dot6)args[0]; + + +#define DO_SSWCI \ + CUR.GS.single_width_cutin = (FT_F26Dot6)args[0]; + + + /* XXX: UNDOCUMENTED! or bug in the Windows engine? */ + /* */ + /* It seems that the value that is read here is */ + /* expressed in 16.16 format rather than in font */ + /* units. */ + /* */ +#define DO_SSW \ + CUR.GS.single_width_value = (FT_F26Dot6)( args[0] >> 10 ); + + +#define DO_FLIPON \ + CUR.GS.auto_flip = TRUE; + + +#define DO_FLIPOFF \ + CUR.GS.auto_flip = FALSE; + + +#define DO_SDB \ + CUR.GS.delta_base = (FT_Short)args[0]; + + +#define DO_SDS \ + CUR.GS.delta_shift = (FT_Short)args[0]; + + +#define DO_MD /* nothing */ + + +#define DO_MPPEM \ + args[0] = CURRENT_Ppem(); + + + /* Note: The pointSize should be irrelevant in a given font program; */ + /* we thus decide to return only the ppem. */ +#if 0 + +#define DO_MPS \ + args[0] = CUR.metrics.pointSize; + +#else + +#define DO_MPS \ + args[0] = CURRENT_Ppem(); + +#endif /* 0 */ + + +#define DO_DUP \ + args[1] = args[0]; + + +#define DO_CLEAR \ + CUR.new_top = 0; + + +#define DO_SWAP \ + { \ + FT_Long L; \ + \ + \ + L = args[0]; \ + args[0] = args[1]; \ + args[1] = L; \ + } + + +#define DO_DEPTH \ + args[0] = CUR.top; + + +#define DO_CINDEX \ + { \ + FT_Long L; \ + \ + \ + L = args[0]; \ + \ + if ( L <= 0 || L > CUR.args ) \ + CUR.error = TT_Err_Invalid_Reference; \ + else \ + args[0] = CUR.stack[CUR.args - L]; \ + } + + +#define DO_JROT \ + if ( args[1] != 0 ) \ + { \ + CUR.IP += args[0]; \ + CUR.step_ins = FALSE; \ + } + + +#define DO_JMPR \ + CUR.IP += args[0]; \ + CUR.step_ins = FALSE; + + +#define DO_JROF \ + if ( args[1] == 0 ) \ + { \ + CUR.IP += args[0]; \ + CUR.step_ins = FALSE; \ + } + + +#define DO_LT \ + args[0] = ( args[0] < args[1] ); + + +#define DO_LTEQ \ + args[0] = ( args[0] <= args[1] ); + + +#define DO_GT \ + args[0] = ( args[0] > args[1] ); + + +#define DO_GTEQ \ + args[0] = ( args[0] >= args[1] ); + + +#define DO_EQ \ + args[0] = ( args[0] == args[1] ); + + +#define DO_NEQ \ + args[0] = ( args[0] != args[1] ); + + +#define DO_ODD \ + args[0] = ( ( CUR_Func_round( args[0], 0 ) & 127 ) == 64 ); + + +#define DO_EVEN \ + args[0] = ( ( CUR_Func_round( args[0], 0 ) & 127 ) == 0 ); + + +#define DO_AND \ + args[0] = ( args[0] && args[1] ); + + +#define DO_OR \ + args[0] = ( args[0] || args[1] ); + + +#define DO_NOT \ + args[0] = !args[0]; + + +#define DO_ADD \ + args[0] += args[1]; + + +#define DO_SUB \ + args[0] -= args[1]; + + +#define DO_DIV \ + if ( args[1] == 0 ) \ + CUR.error = TT_Err_Divide_By_Zero; \ + else \ + args[0] = TT_MULDIV( args[0], 64L, args[1] ); + + +#define DO_MUL \ + args[0] = TT_MULDIV( args[0], args[1], 64L ); + + +#define DO_ABS \ + args[0] = ABS( args[0] ); + + +#define DO_NEG \ + args[0] = -args[0]; + + +#define DO_FLOOR \ + args[0] &= -64; + + +#define DO_CEILING \ + args[0] = ( args[0] + 63 ) & -64; + + +#define DO_RS \ + { \ + FT_ULong I = (FT_ULong)args[0]; \ + \ + \ + if ( BOUNDS( I, CUR.storeSize ) ) \ + { \ + if ( CUR.pedantic_hinting ) \ + { \ + ARRAY_BOUND_ERROR; \ + } \ + else \ + args[0] = 0; \ + } \ + else \ + args[0] = CUR.storage[I]; \ + } + + +#define DO_WS \ + { \ + FT_ULong I = (FT_ULong)args[0]; \ + \ + \ + if ( BOUNDS( I, CUR.storeSize ) ) \ + { \ + if ( CUR.pedantic_hinting ) \ + { \ + ARRAY_BOUND_ERROR; \ + } \ + } \ + else \ + CUR.storage[I] = args[1]; \ + } + + +#define DO_RCVT \ + { \ + FT_ULong I = (FT_ULong)args[0]; \ + \ + \ + if ( BOUNDS( I, CUR.cvtSize ) ) \ + { \ + if ( CUR.pedantic_hinting ) \ + { \ + ARRAY_BOUND_ERROR; \ + } \ + else \ + args[0] = 0; \ + } \ + else \ + args[0] = CUR_Func_read_cvt( I ); \ + } + + +#define DO_WCVTP \ + { \ + FT_ULong I = (FT_ULong)args[0]; \ + \ + \ + if ( BOUNDS( I, CUR.cvtSize ) ) \ + { \ + if ( CUR.pedantic_hinting ) \ + { \ + ARRAY_BOUND_ERROR; \ + } \ + } \ + else \ + CUR_Func_write_cvt( I, args[1] ); \ + } + + +#define DO_WCVTF \ + { \ + FT_ULong I = (FT_ULong)args[0]; \ + \ + \ + if ( BOUNDS( I, CUR.cvtSize ) ) \ + { \ + if ( CUR.pedantic_hinting ) \ + { \ + ARRAY_BOUND_ERROR; \ + } \ + } \ + else \ + CUR.cvt[I] = TT_MULFIX( args[1], CUR.tt_metrics.scale ); \ + } + + +#define DO_DEBUG \ + CUR.error = TT_Err_Debug_OpCode; + + +#define DO_ROUND \ + args[0] = CUR_Func_round( \ + args[0], \ + CUR.tt_metrics.compensations[CUR.opcode - 0x68] ); + + +#define DO_NROUND \ + args[0] = ROUND_None( args[0], \ + CUR.tt_metrics.compensations[CUR.opcode - 0x6C] ); + + +#define DO_MAX \ + if ( args[1] > args[0] ) \ + args[0] = args[1]; + + +#define DO_MIN \ + if ( args[1] < args[0] ) \ + args[0] = args[1]; + + +#ifndef TT_CONFIG_OPTION_INTERPRETER_SWITCH + + +#undef ARRAY_BOUND_ERROR +#define ARRAY_BOUND_ERROR \ + { \ + CUR.error = TT_Err_Invalid_Reference; \ + return; \ + } + + + /*************************************************************************/ + /* */ + /* SVTCA[a]: Set (F and P) Vectors to Coordinate Axis */ + /* Opcode range: 0x00-0x01 */ + /* Stack: --> */ + /* */ + static void + Ins_SVTCA( INS_ARG ) + { + DO_SVTCA + } + + + /*************************************************************************/ + /* */ + /* SPVTCA[a]: Set PVector to Coordinate Axis */ + /* Opcode range: 0x02-0x03 */ + /* Stack: --> */ + /* */ + static void + Ins_SPVTCA( INS_ARG ) + { + DO_SPVTCA + } + + + /*************************************************************************/ + /* */ + /* SFVTCA[a]: Set FVector to Coordinate Axis */ + /* Opcode range: 0x04-0x05 */ + /* Stack: --> */ + /* */ + static void + Ins_SFVTCA( INS_ARG ) + { + DO_SFVTCA + } + + + /*************************************************************************/ + /* */ + /* SPVTL[a]: Set PVector To Line */ + /* Opcode range: 0x06-0x07 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_SPVTL( INS_ARG ) + { + DO_SPVTL + } + + + /*************************************************************************/ + /* */ + /* SFVTL[a]: Set FVector To Line */ + /* Opcode range: 0x08-0x09 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_SFVTL( INS_ARG ) + { + DO_SFVTL + } + + + /*************************************************************************/ + /* */ + /* SFVTPV[]: Set FVector To PVector */ + /* Opcode range: 0x0E */ + /* Stack: --> */ + /* */ + static void + Ins_SFVTPV( INS_ARG ) + { + DO_SFVTPV + } + + + /*************************************************************************/ + /* */ + /* SPVFS[]: Set PVector From Stack */ + /* Opcode range: 0x0A */ + /* Stack: f2.14 f2.14 --> */ + /* */ + static void + Ins_SPVFS( INS_ARG ) + { + DO_SPVFS + } + + + /*************************************************************************/ + /* */ + /* SFVFS[]: Set FVector From Stack */ + /* Opcode range: 0x0B */ + /* Stack: f2.14 f2.14 --> */ + /* */ + static void + Ins_SFVFS( INS_ARG ) + { + DO_SFVFS + } + + + /*************************************************************************/ + /* */ + /* GPV[]: Get Projection Vector */ + /* Opcode range: 0x0C */ + /* Stack: ef2.14 --> ef2.14 */ + /* */ + static void + Ins_GPV( INS_ARG ) + { + DO_GPV + } + + + /*************************************************************************/ + /* GFV[]: Get Freedom Vector */ + /* Opcode range: 0x0D */ + /* Stack: ef2.14 --> ef2.14 */ + /* */ + static void + Ins_GFV( INS_ARG ) + { + DO_GFV + } + + + /*************************************************************************/ + /* */ + /* SRP0[]: Set Reference Point 0 */ + /* Opcode range: 0x10 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SRP0( INS_ARG ) + { + DO_SRP0 + } + + + /*************************************************************************/ + /* */ + /* SRP1[]: Set Reference Point 1 */ + /* Opcode range: 0x11 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SRP1( INS_ARG ) + { + DO_SRP1 + } + + + /*************************************************************************/ + /* */ + /* SRP2[]: Set Reference Point 2 */ + /* Opcode range: 0x12 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SRP2( INS_ARG ) + { + DO_SRP2 + } + + + /*************************************************************************/ + /* */ + /* RTHG[]: Round To Half Grid */ + /* Opcode range: 0x19 */ + /* Stack: --> */ + /* */ + static void + Ins_RTHG( INS_ARG ) + { + DO_RTHG + } + + + /*************************************************************************/ + /* */ + /* RTG[]: Round To Grid */ + /* Opcode range: 0x18 */ + /* Stack: --> */ + /* */ + static void + Ins_RTG( INS_ARG ) + { + DO_RTG + } + + + /*************************************************************************/ + /* RTDG[]: Round To Double Grid */ + /* Opcode range: 0x3D */ + /* Stack: --> */ + /* */ + static void + Ins_RTDG( INS_ARG ) + { + DO_RTDG + } + + + /*************************************************************************/ + /* RUTG[]: Round Up To Grid */ + /* Opcode range: 0x7C */ + /* Stack: --> */ + /* */ + static void + Ins_RUTG( INS_ARG ) + { + DO_RUTG + } + + + /*************************************************************************/ + /* */ + /* RDTG[]: Round Down To Grid */ + /* Opcode range: 0x7D */ + /* Stack: --> */ + /* */ + static void + Ins_RDTG( INS_ARG ) + { + DO_RDTG + } + + + /*************************************************************************/ + /* */ + /* ROFF[]: Round OFF */ + /* Opcode range: 0x7A */ + /* Stack: --> */ + /* */ + static void + Ins_ROFF( INS_ARG ) + { + DO_ROFF + } + + + /*************************************************************************/ + /* */ + /* SROUND[]: Super ROUND */ + /* Opcode range: 0x76 */ + /* Stack: Eint8 --> */ + /* */ + static void + Ins_SROUND( INS_ARG ) + { + DO_SROUND + } + + + /*************************************************************************/ + /* */ + /* S45ROUND[]: Super ROUND 45 degrees */ + /* Opcode range: 0x77 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_S45ROUND( INS_ARG ) + { + DO_S45ROUND + } + + + /*************************************************************************/ + /* */ + /* SLOOP[]: Set LOOP variable */ + /* Opcode range: 0x17 */ + /* Stack: int32? --> */ + /* */ + static void + Ins_SLOOP( INS_ARG ) + { + DO_SLOOP + } + + + /*************************************************************************/ + /* */ + /* SMD[]: Set Minimum Distance */ + /* Opcode range: 0x1A */ + /* Stack: f26.6 --> */ + /* */ + static void + Ins_SMD( INS_ARG ) + { + DO_SMD + } + + + /*************************************************************************/ + /* */ + /* SCVTCI[]: Set Control Value Table Cut In */ + /* Opcode range: 0x1D */ + /* Stack: f26.6 --> */ + /* */ + static void + Ins_SCVTCI( INS_ARG ) + { + DO_SCVTCI + } + + + /*************************************************************************/ + /* */ + /* SSWCI[]: Set Single Width Cut In */ + /* Opcode range: 0x1E */ + /* Stack: f26.6 --> */ + /* */ + static void + Ins_SSWCI( INS_ARG ) + { + DO_SSWCI + } + + + /*************************************************************************/ + /* */ + /* SSW[]: Set Single Width */ + /* Opcode range: 0x1F */ + /* Stack: int32? --> */ + /* */ + static void + Ins_SSW( INS_ARG ) + { + DO_SSW + } + + + /*************************************************************************/ + /* */ + /* FLIPON[]: Set auto-FLIP to ON */ + /* Opcode range: 0x4D */ + /* Stack: --> */ + /* */ + static void + Ins_FLIPON( INS_ARG ) + { + DO_FLIPON + } + + + /*************************************************************************/ + /* */ + /* FLIPOFF[]: Set auto-FLIP to OFF */ + /* Opcode range: 0x4E */ + /* Stack: --> */ + /* */ + static void + Ins_FLIPOFF( INS_ARG ) + { + DO_FLIPOFF + } + + + /*************************************************************************/ + /* */ + /* SANGW[]: Set ANGle Weight */ + /* Opcode range: 0x7E */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SANGW( INS_ARG ) + { + /* instruction not supported anymore */ + } + + + /*************************************************************************/ + /* */ + /* SDB[]: Set Delta Base */ + /* Opcode range: 0x5E */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SDB( INS_ARG ) + { + DO_SDB + } + + + /*************************************************************************/ + /* */ + /* SDS[]: Set Delta Shift */ + /* Opcode range: 0x5F */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SDS( INS_ARG ) + { + DO_SDS + } + + + /*************************************************************************/ + /* */ + /* MPPEM[]: Measure Pixel Per EM */ + /* Opcode range: 0x4B */ + /* Stack: --> Euint16 */ + /* */ + static void + Ins_MPPEM( INS_ARG ) + { + DO_MPPEM + } + + + /*************************************************************************/ + /* */ + /* MPS[]: Measure Point Size */ + /* Opcode range: 0x4C */ + /* Stack: --> Euint16 */ + /* */ + static void + Ins_MPS( INS_ARG ) + { + DO_MPS + } + + + /*************************************************************************/ + /* */ + /* DUP[]: DUPlicate the top stack's element */ + /* Opcode range: 0x20 */ + /* Stack: StkElt --> StkElt StkElt */ + /* */ + static void + Ins_DUP( INS_ARG ) + { + DO_DUP + } + + + /*************************************************************************/ + /* */ + /* POP[]: POP the stack's top element */ + /* Opcode range: 0x21 */ + /* Stack: StkElt --> */ + /* */ + static void + Ins_POP( INS_ARG ) + { + /* nothing to do */ + } + + + /*************************************************************************/ + /* */ + /* CLEAR[]: CLEAR the entire stack */ + /* Opcode range: 0x22 */ + /* Stack: StkElt... --> */ + /* */ + static void + Ins_CLEAR( INS_ARG ) + { + DO_CLEAR + } + + + /*************************************************************************/ + /* */ + /* SWAP[]: SWAP the stack's top two elements */ + /* Opcode range: 0x23 */ + /* Stack: 2 * StkElt --> 2 * StkElt */ + /* */ + static void + Ins_SWAP( INS_ARG ) + { + DO_SWAP + } + + + /*************************************************************************/ + /* */ + /* DEPTH[]: return the stack DEPTH */ + /* Opcode range: 0x24 */ + /* Stack: --> uint32 */ + /* */ + static void + Ins_DEPTH( INS_ARG ) + { + DO_DEPTH + } + + + /*************************************************************************/ + /* */ + /* CINDEX[]: Copy INDEXed element */ + /* Opcode range: 0x25 */ + /* Stack: int32 --> StkElt */ + /* */ + static void + Ins_CINDEX( INS_ARG ) + { + DO_CINDEX + } + + + /*************************************************************************/ + /* */ + /* EIF[]: End IF */ + /* Opcode range: 0x59 */ + /* Stack: --> */ + /* */ + static void + Ins_EIF( INS_ARG ) + { + /* nothing to do */ + } + + + /*************************************************************************/ + /* */ + /* JROT[]: Jump Relative On True */ + /* Opcode range: 0x78 */ + /* Stack: StkElt int32 --> */ + /* */ + static void + Ins_JROT( INS_ARG ) + { + DO_JROT + } + + + /*************************************************************************/ + /* */ + /* JMPR[]: JuMP Relative */ + /* Opcode range: 0x1C */ + /* Stack: int32 --> */ + /* */ + static void + Ins_JMPR( INS_ARG ) + { + DO_JMPR + } + + + /*************************************************************************/ + /* */ + /* JROF[]: Jump Relative On False */ + /* Opcode range: 0x79 */ + /* Stack: StkElt int32 --> */ + /* */ + static void + Ins_JROF( INS_ARG ) + { + DO_JROF + } + + + /*************************************************************************/ + /* */ + /* LT[]: Less Than */ + /* Opcode range: 0x50 */ + /* Stack: int32? int32? --> bool */ + /* */ + static void + Ins_LT( INS_ARG ) + { + DO_LT + } + + + /*************************************************************************/ + /* */ + /* LTEQ[]: Less Than or EQual */ + /* Opcode range: 0x51 */ + /* Stack: int32? int32? --> bool */ + /* */ + static void + Ins_LTEQ( INS_ARG ) + { + DO_LTEQ + } + + + /*************************************************************************/ + /* */ + /* GT[]: Greater Than */ + /* Opcode range: 0x52 */ + /* Stack: int32? int32? --> bool */ + /* */ + static void + Ins_GT( INS_ARG ) + { + DO_GT + } + + + /*************************************************************************/ + /* */ + /* GTEQ[]: Greater Than or EQual */ + /* Opcode range: 0x53 */ + /* Stack: int32? int32? --> bool */ + /* */ + static void + Ins_GTEQ( INS_ARG ) + { + DO_GTEQ + } + + + /*************************************************************************/ + /* */ + /* EQ[]: EQual */ + /* Opcode range: 0x54 */ + /* Stack: StkElt StkElt --> bool */ + /* */ + static void + Ins_EQ( INS_ARG ) + { + DO_EQ + } + + + /*************************************************************************/ + /* */ + /* NEQ[]: Not EQual */ + /* Opcode range: 0x55 */ + /* Stack: StkElt StkElt --> bool */ + /* */ + static void + Ins_NEQ( INS_ARG ) + { + DO_NEQ + } + + + /*************************************************************************/ + /* */ + /* ODD[]: Is ODD */ + /* Opcode range: 0x56 */ + /* Stack: f26.6 --> bool */ + /* */ + static void + Ins_ODD( INS_ARG ) + { + DO_ODD + } + + + /*************************************************************************/ + /* */ + /* EVEN[]: Is EVEN */ + /* Opcode range: 0x57 */ + /* Stack: f26.6 --> bool */ + /* */ + static void + Ins_EVEN( INS_ARG ) + { + DO_EVEN + } + + + /*************************************************************************/ + /* */ + /* AND[]: logical AND */ + /* Opcode range: 0x5A */ + /* Stack: uint32 uint32 --> uint32 */ + /* */ + static void + Ins_AND( INS_ARG ) + { + DO_AND + } + + + /*************************************************************************/ + /* */ + /* OR[]: logical OR */ + /* Opcode range: 0x5B */ + /* Stack: uint32 uint32 --> uint32 */ + /* */ + static void + Ins_OR( INS_ARG ) + { + DO_OR + } + + + /*************************************************************************/ + /* */ + /* NOT[]: logical NOT */ + /* Opcode range: 0x5C */ + /* Stack: StkElt --> uint32 */ + /* */ + static void + Ins_NOT( INS_ARG ) + { + DO_NOT + } + + + /*************************************************************************/ + /* */ + /* ADD[]: ADD */ + /* Opcode range: 0x60 */ + /* Stack: f26.6 f26.6 --> f26.6 */ + /* */ + static void + Ins_ADD( INS_ARG ) + { + DO_ADD + } + + + /*************************************************************************/ + /* */ + /* SUB[]: SUBtract */ + /* Opcode range: 0x61 */ + /* Stack: f26.6 f26.6 --> f26.6 */ + /* */ + static void + Ins_SUB( INS_ARG ) + { + DO_SUB + } + + + /*************************************************************************/ + /* */ + /* DIV[]: DIVide */ + /* Opcode range: 0x62 */ + /* Stack: f26.6 f26.6 --> f26.6 */ + /* */ + static void + Ins_DIV( INS_ARG ) + { + DO_DIV + } + + + /*************************************************************************/ + /* */ + /* MUL[]: MULtiply */ + /* Opcode range: 0x63 */ + /* Stack: f26.6 f26.6 --> f26.6 */ + /* */ + static void + Ins_MUL( INS_ARG ) + { + DO_MUL + } + + + /*************************************************************************/ + /* */ + /* ABS[]: ABSolute value */ + /* Opcode range: 0x64 */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_ABS( INS_ARG ) + { + DO_ABS + } + + + /*************************************************************************/ + /* */ + /* NEG[]: NEGate */ + /* Opcode range: 0x65 */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_NEG( INS_ARG ) + { + DO_NEG + } + + + /*************************************************************************/ + /* */ + /* FLOOR[]: FLOOR */ + /* Opcode range: 0x66 */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_FLOOR( INS_ARG ) + { + DO_FLOOR + } + + + /*************************************************************************/ + /* */ + /* CEILING[]: CEILING */ + /* Opcode range: 0x67 */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_CEILING( INS_ARG ) + { + DO_CEILING + } + + + /*************************************************************************/ + /* */ + /* RS[]: Read Store */ + /* Opcode range: 0x43 */ + /* Stack: uint32 --> uint32 */ + /* */ + static void + Ins_RS( INS_ARG ) + { + DO_RS + } + + + /*************************************************************************/ + /* */ + /* WS[]: Write Store */ + /* Opcode range: 0x42 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_WS( INS_ARG ) + { + DO_WS + } + + + /*************************************************************************/ + /* */ + /* WCVTP[]: Write CVT in Pixel units */ + /* Opcode range: 0x44 */ + /* Stack: f26.6 uint32 --> */ + /* */ + static void + Ins_WCVTP( INS_ARG ) + { + DO_WCVTP + } + + + /*************************************************************************/ + /* */ + /* WCVTF[]: Write CVT in Funits */ + /* Opcode range: 0x70 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_WCVTF( INS_ARG ) + { + DO_WCVTF + } + + + /*************************************************************************/ + /* */ + /* RCVT[]: Read CVT */ + /* Opcode range: 0x45 */ + /* Stack: uint32 --> f26.6 */ + /* */ + static void + Ins_RCVT( INS_ARG ) + { + DO_RCVT + } + + + /*************************************************************************/ + /* */ + /* AA[]: Adjust Angle */ + /* Opcode range: 0x7F */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_AA( INS_ARG ) + { + /* intentionally no longer supported */ + } + + + /*************************************************************************/ + /* */ + /* DEBUG[]: DEBUG. Unsupported. */ + /* Opcode range: 0x4F */ + /* Stack: uint32 --> */ + /* */ + /* Note: The original instruction pops a value from the stack. */ + /* */ + static void + Ins_DEBUG( INS_ARG ) + { + DO_DEBUG + } + + + /*************************************************************************/ + /* */ + /* ROUND[ab]: ROUND value */ + /* Opcode range: 0x68-0x6B */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_ROUND( INS_ARG ) + { + DO_ROUND + } + + + /*************************************************************************/ + /* */ + /* NROUND[ab]: No ROUNDing of value */ + /* Opcode range: 0x6C-0x6F */ + /* Stack: f26.6 --> f26.6 */ + /* */ + static void + Ins_NROUND( INS_ARG ) + { + DO_NROUND + } + + + /*************************************************************************/ + /* */ + /* MAX[]: MAXimum */ + /* Opcode range: 0x68 */ + /* Stack: int32? int32? --> int32 */ + /* */ + static void + Ins_MAX( INS_ARG ) + { + DO_MAX + } + + + /*************************************************************************/ + /* */ + /* MIN[]: MINimum */ + /* Opcode range: 0x69 */ + /* Stack: int32? int32? --> int32 */ + /* */ + static void + Ins_MIN( INS_ARG ) + { + DO_MIN + } + + +#endif /* !TT_CONFIG_OPTION_INTERPRETER_SWITCH */ + + + /*************************************************************************/ + /* */ + /* The following functions are called as is within the switch statement. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* MINDEX[]: Move INDEXed element */ + /* Opcode range: 0x26 */ + /* Stack: int32? --> StkElt */ + /* */ + static void + Ins_MINDEX( INS_ARG ) + { + FT_Long L, K; + + + L = args[0]; + + if ( L <= 0 || L > CUR.args ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + + K = CUR.stack[CUR.args - L]; + + FT_MEM_MOVE( &CUR.stack[CUR.args - L ], + &CUR.stack[CUR.args - L + 1], + ( L - 1 ) * sizeof ( FT_Long ) ); + + CUR.stack[CUR.args - 1] = K; + } + + + /*************************************************************************/ + /* */ + /* ROLL[]: ROLL top three elements */ + /* Opcode range: 0x8A */ + /* Stack: 3 * StkElt --> 3 * StkElt */ + /* */ + static void + Ins_ROLL( INS_ARG ) + { + FT_Long A, B, C; + + FT_UNUSED_EXEC; + + + A = args[2]; + B = args[1]; + C = args[0]; + + args[2] = C; + args[1] = A; + args[0] = B; + } + + + /*************************************************************************/ + /* */ + /* MANAGING THE FLOW OF CONTROL */ + /* */ + /* Instructions appear in the specification's order. */ + /* */ + /*************************************************************************/ + + + static FT_Bool + SkipCode( EXEC_OP ) + { + CUR.IP += CUR.length; + + if ( CUR.IP < CUR.codeSize ) + { + CUR.opcode = CUR.code[CUR.IP]; + + CUR.length = opcode_length[CUR.opcode]; + if ( CUR.length < 0 ) + { + if ( CUR.IP + 1 > CUR.codeSize ) + goto Fail_Overflow; + CUR.length = CUR.code[CUR.IP + 1] + 2; + } + + if ( CUR.IP + CUR.length <= CUR.codeSize ) + return SUCCESS; + } + + Fail_Overflow: + CUR.error = TT_Err_Code_Overflow; + return FAILURE; + } + + + /*************************************************************************/ + /* */ + /* IF[]: IF test */ + /* Opcode range: 0x58 */ + /* Stack: StkElt --> */ + /* */ + static void + Ins_IF( INS_ARG ) + { + FT_Int nIfs; + FT_Bool Out; + + + if ( args[0] != 0 ) + return; + + nIfs = 1; + Out = 0; + + do + { + if ( SKIP_Code() == FAILURE ) + return; + + switch ( CUR.opcode ) + { + case 0x58: /* IF */ + nIfs++; + break; + + case 0x1B: /* ELSE */ + Out = FT_BOOL( nIfs == 1 ); + break; + + case 0x59: /* EIF */ + nIfs--; + Out = FT_BOOL( nIfs == 0 ); + break; + } + } while ( Out == 0 ); + } + + + /*************************************************************************/ + /* */ + /* ELSE[]: ELSE */ + /* Opcode range: 0x1B */ + /* Stack: --> */ + /* */ + static void + Ins_ELSE( INS_ARG ) + { + FT_Int nIfs; + + FT_UNUSED_ARG; + + + nIfs = 1; + + do + { + if ( SKIP_Code() == FAILURE ) + return; + + switch ( CUR.opcode ) + { + case 0x58: /* IF */ + nIfs++; + break; + + case 0x59: /* EIF */ + nIfs--; + break; + } + } while ( nIfs != 0 ); + } + + + /*************************************************************************/ + /* */ + /* DEFINING AND USING FUNCTIONS AND INSTRUCTIONS */ + /* */ + /* Instructions appear in the specification's order. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* FDEF[]: Function DEFinition */ + /* Opcode range: 0x2C */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_FDEF( INS_ARG ) + { + FT_ULong n; + TT_DefRecord* rec; + TT_DefRecord* limit; + + + /* some font programs are broken enough to redefine functions! */ + /* We will then parse the current table. */ + + rec = CUR.FDefs; + limit = rec + CUR.numFDefs; + n = args[0]; + + for ( ; rec < limit; rec++ ) + { + if ( rec->opc == n ) + break; + } + + if ( rec == limit ) + { + /* check that there is enough room for new functions */ + if ( CUR.numFDefs >= CUR.maxFDefs ) + { + CUR.error = TT_Err_Too_Many_Function_Defs; + return; + } + CUR.numFDefs++; + } + + rec->range = CUR.curRange; + rec->opc = n; + rec->start = CUR.IP + 1; + rec->active = TRUE; + + if ( n > CUR.maxFunc ) + CUR.maxFunc = n; + + /* Now skip the whole function definition. */ + /* We don't allow nested IDEFS & FDEFs. */ + + while ( SKIP_Code() == SUCCESS ) + { + switch ( CUR.opcode ) + { + case 0x89: /* IDEF */ + case 0x2C: /* FDEF */ + CUR.error = TT_Err_Nested_DEFS; + return; + + case 0x2D: /* ENDF */ + return; + } + } + } + + + /*************************************************************************/ + /* */ + /* ENDF[]: END Function definition */ + /* Opcode range: 0x2D */ + /* Stack: --> */ + /* */ + static void + Ins_ENDF( INS_ARG ) + { + TT_CallRec* pRec; + + FT_UNUSED_ARG; + + + if ( CUR.callTop <= 0 ) /* We encountered an ENDF without a call */ + { + CUR.error = TT_Err_ENDF_In_Exec_Stream; + return; + } + + CUR.callTop--; + + pRec = &CUR.callStack[CUR.callTop]; + + pRec->Cur_Count--; + + CUR.step_ins = FALSE; + + if ( pRec->Cur_Count > 0 ) + { + CUR.callTop++; + CUR.IP = pRec->Cur_Restart; + } + else + /* Loop through the current function */ + INS_Goto_CodeRange( pRec->Caller_Range, + pRec->Caller_IP ); + + /* Exit the current call frame. */ + + /* NOTE: If the last intruction of a program is a */ + /* CALL or LOOPCALL, the return address is */ + /* always out of the code range. This is a */ + /* valid address, and it is why we do not test */ + /* the result of Ins_Goto_CodeRange() here! */ + } + + + /*************************************************************************/ + /* */ + /* CALL[]: CALL function */ + /* Opcode range: 0x2B */ + /* Stack: uint32? --> */ + /* */ + static void + Ins_CALL( INS_ARG ) + { + FT_ULong F; + TT_CallRec* pCrec; + TT_DefRecord* def; + + + /* first of all, check the index */ + + F = args[0]; + if ( BOUNDS( F, CUR.maxFunc + 1 ) ) + goto Fail; + + /* Except for some old Apple fonts, all functions in a TrueType */ + /* font are defined in increasing order, starting from 0. This */ + /* means that we normally have */ + /* */ + /* CUR.maxFunc+1 == CUR.numFDefs */ + /* CUR.FDefs[n].opc == n for n in 0..CUR.maxFunc */ + /* */ + /* If this isn't true, we need to look up the function table. */ + + def = CUR.FDefs + F; + if ( CUR.maxFunc + 1 != CUR.numFDefs || def->opc != F ) + { + /* look up the FDefs table */ + TT_DefRecord* limit; + + + def = CUR.FDefs; + limit = def + CUR.numFDefs; + + while ( def < limit && def->opc != F ) + def++; + + if ( def == limit ) + goto Fail; + } + + /* check that the function is active */ + if ( !def->active ) + goto Fail; + + /* check the call stack */ + if ( CUR.callTop >= CUR.callSize ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + pCrec = CUR.callStack + CUR.callTop; + + pCrec->Caller_Range = CUR.curRange; + pCrec->Caller_IP = CUR.IP + 1; + pCrec->Cur_Count = 1; + pCrec->Cur_Restart = def->start; + + CUR.callTop++; + + INS_Goto_CodeRange( def->range, + def->start ); + + CUR.step_ins = FALSE; + return; + + Fail: + CUR.error = TT_Err_Invalid_Reference; + } + + + /*************************************************************************/ + /* */ + /* LOOPCALL[]: LOOP and CALL function */ + /* Opcode range: 0x2A */ + /* Stack: uint32? Eint16? --> */ + /* */ + static void + Ins_LOOPCALL( INS_ARG ) + { + FT_ULong F; + TT_CallRec* pCrec; + TT_DefRecord* def; + + + /* first of all, check the index */ + F = args[1]; + if ( BOUNDS( F, CUR.maxFunc + 1 ) ) + goto Fail; + + /* Except for some old Apple fonts, all functions in a TrueType */ + /* font are defined in increasing order, starting from 0. This */ + /* means that we normally have */ + /* */ + /* CUR.maxFunc+1 == CUR.numFDefs */ + /* CUR.FDefs[n].opc == n for n in 0..CUR.maxFunc */ + /* */ + /* If this isn't true, we need to look up the function table. */ + + def = CUR.FDefs + F; + if ( CUR.maxFunc + 1 != CUR.numFDefs || def->opc != F ) + { + /* look up the FDefs table */ + TT_DefRecord* limit; + + + def = CUR.FDefs; + limit = def + CUR.numFDefs; + + while ( def < limit && def->opc != F ) + def++; + + if ( def == limit ) + goto Fail; + } + + /* check that the function is active */ + if ( !def->active ) + goto Fail; + + /* check stack */ + if ( CUR.callTop >= CUR.callSize ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + if ( args[0] > 0 ) + { + pCrec = CUR.callStack + CUR.callTop; + + pCrec->Caller_Range = CUR.curRange; + pCrec->Caller_IP = CUR.IP + 1; + pCrec->Cur_Count = (FT_Int)args[0]; + pCrec->Cur_Restart = def->start; + + CUR.callTop++; + + INS_Goto_CodeRange( def->range, def->start ); + + CUR.step_ins = FALSE; + } + return; + + Fail: + CUR.error = TT_Err_Invalid_Reference; + } + + + /*************************************************************************/ + /* */ + /* IDEF[]: Instruction DEFinition */ + /* Opcode range: 0x89 */ + /* Stack: Eint8 --> */ + /* */ + static void + Ins_IDEF( INS_ARG ) + { + TT_DefRecord* def; + TT_DefRecord* limit; + + + /* First of all, look for the same function in our table */ + + def = CUR.IDefs; + limit = def + CUR.numIDefs; + + for ( ; def < limit; def++ ) + if ( def->opc == (FT_ULong)args[0] ) + break; + + if ( def == limit ) + { + /* check that there is enough room for a new instruction */ + if ( CUR.numIDefs >= CUR.maxIDefs ) + { + CUR.error = TT_Err_Too_Many_Instruction_Defs; + return; + } + CUR.numIDefs++; + } + + def->opc = args[0]; + def->start = CUR.IP+1; + def->range = CUR.curRange; + def->active = TRUE; + + if ( (FT_ULong)args[0] > CUR.maxIns ) + CUR.maxIns = args[0]; + + /* Now skip the whole function definition. */ + /* We don't allow nested IDEFs & FDEFs. */ + + while ( SKIP_Code() == SUCCESS ) + { + switch ( CUR.opcode ) + { + case 0x89: /* IDEF */ + case 0x2C: /* FDEF */ + CUR.error = TT_Err_Nested_DEFS; + return; + case 0x2D: /* ENDF */ + return; + } + } + } + + + /*************************************************************************/ + /* */ + /* PUSHING DATA ONTO THE INTERPRETER STACK */ + /* */ + /* Instructions appear in the specification's order. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* NPUSHB[]: PUSH N Bytes */ + /* Opcode range: 0x40 */ + /* Stack: --> uint32... */ + /* */ + static void + Ins_NPUSHB( INS_ARG ) + { + FT_UShort L, K; + + + L = (FT_UShort)CUR.code[CUR.IP + 1]; + + if ( BOUNDS( L, CUR.stackSize + 1 - CUR.top ) ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + for ( K = 1; K <= L; K++ ) + args[K - 1] = CUR.code[CUR.IP + K + 1]; + + CUR.new_top += L; + } + + + /*************************************************************************/ + /* */ + /* NPUSHW[]: PUSH N Words */ + /* Opcode range: 0x41 */ + /* Stack: --> int32... */ + /* */ + static void + Ins_NPUSHW( INS_ARG ) + { + FT_UShort L, K; + + + L = (FT_UShort)CUR.code[CUR.IP + 1]; + + if ( BOUNDS( L, CUR.stackSize + 1 - CUR.top ) ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + CUR.IP += 2; + + for ( K = 0; K < L; K++ ) + args[K] = GET_ShortIns(); + + CUR.step_ins = FALSE; + CUR.new_top += L; + } + + + /*************************************************************************/ + /* */ + /* PUSHB[abc]: PUSH Bytes */ + /* Opcode range: 0xB0-0xB7 */ + /* Stack: --> uint32... */ + /* */ + static void + Ins_PUSHB( INS_ARG ) + { + FT_UShort L, K; + + + L = (FT_UShort)(CUR.opcode - 0xB0 + 1); + + if ( BOUNDS( L, CUR.stackSize + 1 - CUR.top ) ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + for ( K = 1; K <= L; K++ ) + args[K - 1] = CUR.code[CUR.IP + K]; + } + + + /*************************************************************************/ + /* */ + /* PUSHW[abc]: PUSH Words */ + /* Opcode range: 0xB8-0xBF */ + /* Stack: --> int32... */ + /* */ + static void + Ins_PUSHW( INS_ARG ) + { + FT_UShort L, K; + + + L = (FT_UShort)(CUR.opcode - 0xB8 + 1); + + if ( BOUNDS( L, CUR.stackSize + 1 - CUR.top ) ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + CUR.IP++; + + for ( K = 0; K < L; K++ ) + args[K] = GET_ShortIns(); + + CUR.step_ins = FALSE; + } + + + /*************************************************************************/ + /* */ + /* MANAGING THE GRAPHICS STATE */ + /* */ + /* Instructions appear in the specs' order. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* GC[a]: Get Coordinate projected onto */ + /* Opcode range: 0x46-0x47 */ + /* Stack: uint32 --> f26.6 */ + /* */ + /* BULLSHIT: Measures from the original glyph must be taken along the */ + /* dual projection vector! */ + /* */ + static void + Ins_GC( INS_ARG ) + { + FT_ULong L; + FT_F26Dot6 R; + + + L = (FT_ULong)args[0]; + + if ( BOUNDS( L, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + else + R = 0; + } + else + { + if ( CUR.opcode & 1 ) + R = CUR_Func_dualproj( CUR.zp2.org + L, NULL_Vector ); + else + R = CUR_Func_project( CUR.zp2.cur + L, NULL_Vector ); + } + + args[0] = R; + } + + + /*************************************************************************/ + /* */ + /* SCFS[]: Set Coordinate From Stack */ + /* Opcode range: 0x48 */ + /* Stack: f26.6 uint32 --> */ + /* */ + /* Formula: */ + /* */ + /* OA := OA + ( value - OA.p )/( f.p ) * f */ + /* */ + static void + Ins_SCFS( INS_ARG ) + { + FT_Long K; + FT_UShort L; + + + L = (FT_UShort)args[0]; + + if ( BOUNDS( L, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + K = CUR_Func_project( CUR.zp2.cur + L, NULL_Vector ); + + CUR_Func_move( &CUR.zp2, L, args[1] - K ); + + /* not part of the specs, but here for safety */ + + if ( CUR.GS.gep2 == 0 ) + CUR.zp2.org[L] = CUR.zp2.cur[L]; + } + + + /*************************************************************************/ + /* */ + /* MD[a]: Measure Distance */ + /* Opcode range: 0x49-0x4A */ + /* Stack: uint32 uint32 --> f26.6 */ + /* */ + /* BULLSHIT: Measure taken in the original glyph must be along the dual */ + /* projection vector. */ + /* */ + /* Second BULLSHIT: Flag attributes are inverted! */ + /* 0 => measure distance in original outline */ + /* 1 => measure distance in grid-fitted outline */ + /* */ + /* Third one: `zp0 - zp1', and not `zp2 - zp1! */ + /* */ + static void + Ins_MD( INS_ARG ) + { + FT_UShort K, L; + FT_F26Dot6 D; + + + K = (FT_UShort)args[1]; + L = (FT_UShort)args[0]; + + if( BOUNDS( L, CUR.zp0.n_points ) || + BOUNDS( K, CUR.zp1.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + D = 0; + } + else + { + if ( CUR.opcode & 1 ) + D = CUR_Func_project( CUR.zp0.cur + L, CUR.zp1.cur + K ); + else + D = CUR_Func_dualproj( CUR.zp0.org + L, CUR.zp1.org + K ); + } + + args[0] = D; + } + + + /*************************************************************************/ + /* */ + /* SDPVTL[a]: Set Dual PVector to Line */ + /* Opcode range: 0x86-0x87 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_SDPVTL( INS_ARG ) + { + FT_Long A, B, C; + FT_UShort p1, p2; /* was FT_Int in pas type ERROR */ + + + p1 = (FT_UShort)args[1]; + p2 = (FT_UShort)args[0]; + + if ( BOUNDS( p2, CUR.zp1.n_points ) || + BOUNDS( p1, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + { + FT_Vector* v1 = CUR.zp1.org + p2; + FT_Vector* v2 = CUR.zp2.org + p1; + + + A = v1->x - v2->x; + B = v1->y - v2->y; + } + + if ( ( CUR.opcode & 1 ) != 0 ) + { + C = B; /* counter clockwise rotation */ + B = A; + A = -C; + } + + NORMalize( A, B, &CUR.GS.dualVector ); + + { + FT_Vector* v1 = CUR.zp1.cur + p2; + FT_Vector* v2 = CUR.zp2.cur + p1; + + + A = v1->x - v2->x; + B = v1->y - v2->y; + } + + if ( ( CUR.opcode & 1 ) != 0 ) + { + C = B; /* counter clockwise rotation */ + B = A; + A = -C; + } + + NORMalize( A, B, &CUR.GS.projVector ); + + COMPUTE_Funcs(); + } + + + /*************************************************************************/ + /* */ + /* SZP0[]: Set Zone Pointer 0 */ + /* Opcode range: 0x13 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SZP0( INS_ARG ) + { + switch ( (FT_Int)args[0] ) + { + case 0: + CUR.zp0 = CUR.twilight; + break; + + case 1: + CUR.zp0 = CUR.pts; + break; + + default: + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + CUR.GS.gep0 = (FT_UShort)args[0]; + } + + + /*************************************************************************/ + /* */ + /* SZP1[]: Set Zone Pointer 1 */ + /* Opcode range: 0x14 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SZP1( INS_ARG ) + { + switch ( (FT_Int)args[0] ) + { + case 0: + CUR.zp1 = CUR.twilight; + break; + + case 1: + CUR.zp1 = CUR.pts; + break; + + default: + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + CUR.GS.gep1 = (FT_UShort)args[0]; + } + + + /*************************************************************************/ + /* */ + /* SZP2[]: Set Zone Pointer 2 */ + /* Opcode range: 0x15 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SZP2( INS_ARG ) + { + switch ( (FT_Int)args[0] ) + { + case 0: + CUR.zp2 = CUR.twilight; + break; + + case 1: + CUR.zp2 = CUR.pts; + break; + + default: + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + CUR.GS.gep2 = (FT_UShort)args[0]; + } + + + /*************************************************************************/ + /* */ + /* SZPS[]: Set Zone PointerS */ + /* Opcode range: 0x16 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SZPS( INS_ARG ) + { + switch ( (FT_Int)args[0] ) + { + case 0: + CUR.zp0 = CUR.twilight; + break; + + case 1: + CUR.zp0 = CUR.pts; + break; + + default: + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + CUR.zp1 = CUR.zp0; + CUR.zp2 = CUR.zp0; + + CUR.GS.gep0 = (FT_UShort)args[0]; + CUR.GS.gep1 = (FT_UShort)args[0]; + CUR.GS.gep2 = (FT_UShort)args[0]; + } + + + /*************************************************************************/ + /* */ + /* INSTCTRL[]: INSTruction ConTRoL */ + /* Opcode range: 0x8e */ + /* Stack: int32 int32 --> */ + /* */ + static void + Ins_INSTCTRL( INS_ARG ) + { + FT_Long K, L; + + + K = args[1]; + L = args[0]; + + if ( K < 1 || K > 2 ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + if ( L != 0 ) + L = K; + + CUR.GS.instruct_control = FT_BOOL( + ( (FT_Byte)CUR.GS.instruct_control & ~(FT_Byte)K ) | (FT_Byte)L ); + } + + + /*************************************************************************/ + /* */ + /* SCANCTRL[]: SCAN ConTRoL */ + /* Opcode range: 0x85 */ + /* Stack: uint32? --> */ + /* */ + static void + Ins_SCANCTRL( INS_ARG ) + { + FT_Int A; + + + /* Get Threshold */ + A = (FT_Int)( args[0] & 0xFF ); + + if ( A == 0xFF ) + { + CUR.GS.scan_control = TRUE; + return; + } + else if ( A == 0 ) + { + CUR.GS.scan_control = FALSE; + return; + } + + A *= 64; + +#if 0 + if ( (args[0] & 0x100) != 0 && CUR.metrics.pointSize <= A ) + CUR.GS.scan_control = TRUE; +#endif + + if ( (args[0] & 0x200) != 0 && CUR.tt_metrics.rotated ) + CUR.GS.scan_control = TRUE; + + if ( (args[0] & 0x400) != 0 && CUR.tt_metrics.stretched ) + CUR.GS.scan_control = TRUE; + +#if 0 + if ( (args[0] & 0x800) != 0 && CUR.metrics.pointSize > A ) + CUR.GS.scan_control = FALSE; +#endif + + if ( (args[0] & 0x1000) != 0 && CUR.tt_metrics.rotated ) + CUR.GS.scan_control = FALSE; + + if ( (args[0] & 0x2000) != 0 && CUR.tt_metrics.stretched ) + CUR.GS.scan_control = FALSE; + } + + + /*************************************************************************/ + /* */ + /* SCANTYPE[]: SCAN TYPE */ + /* Opcode range: 0x8D */ + /* Stack: uint32? --> */ + /* */ + static void + Ins_SCANTYPE( INS_ARG ) + { + /* for compatibility with future enhancements, */ + /* we must ignore new modes */ + + if ( args[0] >= 0 && args[0] <= 5 ) + { + if ( args[0] == 3 ) + args[0] = 2; + + CUR.GS.scan_type = (FT_Int)args[0]; + } + } + + + /*************************************************************************/ + /* */ + /* MANAGING OUTLINES */ + /* */ + /* Instructions appear in the specification's order. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* FLIPPT[]: FLIP PoinT */ + /* Opcode range: 0x80 */ + /* Stack: uint32... --> */ + /* */ + static void + Ins_FLIPPT( INS_ARG ) + { + FT_UShort point; + + FT_UNUSED_ARG; + + + if ( CUR.top < CUR.GS.loop ) + { + CUR.error = TT_Err_Too_Few_Arguments; + return; + } + + while ( CUR.GS.loop > 0 ) + { + CUR.args--; + + point = (FT_UShort)CUR.stack[CUR.args]; + + if ( BOUNDS( point, CUR.pts.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + CUR.pts.tags[point] ^= FT_Curve_Tag_On; + + CUR.GS.loop--; + } + + CUR.GS.loop = 1; + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* FLIPRGON[]: FLIP RanGe ON */ + /* Opcode range: 0x81 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_FLIPRGON( INS_ARG ) + { + FT_UShort I, K, L; + + + K = (FT_UShort)args[1]; + L = (FT_UShort)args[0]; + + if ( BOUNDS( K, CUR.pts.n_points ) || + BOUNDS( L, CUR.pts.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + for ( I = L; I <= K; I++ ) + CUR.pts.tags[I] |= FT_Curve_Tag_On; + } + + + /*************************************************************************/ + /* */ + /* FLIPRGOFF: FLIP RanGe OFF */ + /* Opcode range: 0x82 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_FLIPRGOFF( INS_ARG ) + { + FT_UShort I, K, L; + + + K = (FT_UShort)args[1]; + L = (FT_UShort)args[0]; + + if ( BOUNDS( K, CUR.pts.n_points ) || + BOUNDS( L, CUR.pts.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + for ( I = L; I <= K; I++ ) + CUR.pts.tags[I] &= ~FT_Curve_Tag_On; + } + + + static FT_Bool + Compute_Point_Displacement( EXEC_OP_ FT_F26Dot6* x, + FT_F26Dot6* y, + TT_GlyphZone zone, + FT_UShort* refp ) + { + TT_GlyphZoneRec zp; + FT_UShort p; + FT_F26Dot6 d; + + + if ( CUR.opcode & 1 ) + { + zp = CUR.zp0; + p = CUR.GS.rp1; + } + else + { + zp = CUR.zp1; + p = CUR.GS.rp2; + } + + if ( BOUNDS( p, zp.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return FAILURE; + } + + *zone = zp; + *refp = p; + + d = CUR_Func_project( zp.cur + p, zp.org + p ); + +#ifdef NO_APPLE_PATENT + + *x = TT_MulFix14( d, CUR.GS.freeVector.x ); + *y = TT_MulFix14( d, CUR.GS.freeVector.y ); + +#else + + *x = TT_MULDIV( d, + (FT_Long)CUR.GS.freeVector.x * 0x10000L, + CUR.F_dot_P ); + *y = TT_MULDIV( d, + (FT_Long)CUR.GS.freeVector.y * 0x10000L, + CUR.F_dot_P ); + +#endif /* NO_APPLE_PATENT */ + + return SUCCESS; + } + + + static void + Move_Zp2_Point( EXEC_OP_ FT_UShort point, + FT_F26Dot6 dx, + FT_F26Dot6 dy, + FT_Bool touch ) + { + if ( CUR.GS.freeVector.x != 0 ) + { + CUR.zp2.cur[point].x += dx; + if ( touch ) + CUR.zp2.tags[point] |= FT_Curve_Tag_Touch_X; + } + + if ( CUR.GS.freeVector.y != 0 ) + { + CUR.zp2.cur[point].y += dy; + if ( touch ) + CUR.zp2.tags[point] |= FT_Curve_Tag_Touch_Y; + } + } + + + /*************************************************************************/ + /* */ + /* SHP[a]: SHift Point by the last point */ + /* Opcode range: 0x32-0x33 */ + /* Stack: uint32... --> */ + /* */ + static void + Ins_SHP( INS_ARG ) + { + TT_GlyphZoneRec zp; + FT_UShort refp; + + FT_F26Dot6 dx, + dy; + FT_UShort point; + + FT_UNUSED_ARG; + + + if ( CUR.top < CUR.GS.loop ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + + if ( COMPUTE_Point_Displacement( &dx, &dy, &zp, &refp ) ) + return; + + while ( CUR.GS.loop > 0 ) + { + CUR.args--; + point = (FT_UShort)CUR.stack[CUR.args]; + + if ( BOUNDS( point, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + /* XXX: UNDOCUMENTED! SHP touches the points */ + MOVE_Zp2_Point( point, dx, dy, TRUE ); + + CUR.GS.loop--; + } + + CUR.GS.loop = 1; + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* SHC[a]: SHift Contour */ + /* Opcode range: 0x34-35 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SHC( INS_ARG ) + { + TT_GlyphZoneRec zp; + FT_UShort refp; + FT_F26Dot6 dx, + dy; + + FT_Short contour; + FT_UShort first_point, last_point, i; + + + contour = (FT_UShort)args[0]; + + if ( BOUNDS( contour, CUR.pts.n_contours ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + if ( COMPUTE_Point_Displacement( &dx, &dy, &zp, &refp ) ) + return; + + if ( contour == 0 ) + first_point = 0; + else + first_point = (FT_UShort)(CUR.pts.contours[contour - 1] + 1); + + last_point = CUR.pts.contours[contour]; + + /* XXX: this is probably wrong... at least it prevents memory */ + /* corruption when zp2 is the twilight zone */ + if ( last_point > CUR.zp2.n_points ) + { + if ( CUR.zp2.n_points > 0 ) + last_point = (FT_UShort)(CUR.zp2.n_points - 1); + else + last_point = 0; + } + + /* XXX: UNDOCUMENTED! SHC doesn't touch the points */ + for ( i = first_point; i <= last_point; i++ ) + { + if ( zp.cur != CUR.zp2.cur || refp != i ) + MOVE_Zp2_Point( i, dx, dy, FALSE ); + } + } + + + /*************************************************************************/ + /* */ + /* SHZ[a]: SHift Zone */ + /* Opcode range: 0x36-37 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_SHZ( INS_ARG ) + { + TT_GlyphZoneRec zp; + FT_UShort refp; + FT_F26Dot6 dx, + dy; + + FT_UShort last_point, i; + + + if ( BOUNDS( args[0], 2 ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + if ( COMPUTE_Point_Displacement( &dx, &dy, &zp, &refp ) ) + return; + + if ( CUR.zp2.n_points > 0 ) + last_point = (FT_UShort)(CUR.zp2.n_points - 1); + else + last_point = 0; + + /* XXX: UNDOCUMENTED! SHZ doesn't touch the points */ + for ( i = 0; i <= last_point; i++ ) + { + if ( zp.cur != CUR.zp2.cur || refp != i ) + MOVE_Zp2_Point( i, dx, dy, FALSE ); + } + } + + + /*************************************************************************/ + /* */ + /* SHPIX[]: SHift points by a PIXel amount */ + /* Opcode range: 0x38 */ + /* Stack: f26.6 uint32... --> */ + /* */ + static void + Ins_SHPIX( INS_ARG ) + { + FT_F26Dot6 dx, dy; + FT_UShort point; + + + if ( CUR.top < CUR.GS.loop + 1 ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + + dx = TT_MulFix14( args[0], CUR.GS.freeVector.x ); + dy = TT_MulFix14( args[0], CUR.GS.freeVector.y ); + + while ( CUR.GS.loop > 0 ) + { + CUR.args--; + + point = (FT_UShort)CUR.stack[CUR.args]; + + if ( BOUNDS( point, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + MOVE_Zp2_Point( point, dx, dy, TRUE ); + + CUR.GS.loop--; + } + + CUR.GS.loop = 1; + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* MSIRP[a]: Move Stack Indirect Relative Position */ + /* Opcode range: 0x3A-0x3B */ + /* Stack: f26.6 uint32 --> */ + /* */ + static void + Ins_MSIRP( INS_ARG ) + { + FT_UShort point; + FT_F26Dot6 distance; + + + point = (FT_UShort)args[0]; + + if ( BOUNDS( point, CUR.zp1.n_points ) || + BOUNDS( CUR.GS.rp0, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + /* XXX: UNDOCUMENTED! behaviour */ + if ( CUR.GS.gep0 == 0 ) /* if in twilight zone */ + { + CUR.zp1.org[point] = CUR.zp0.org[CUR.GS.rp0]; + CUR.zp1.cur[point] = CUR.zp1.org[point]; + } + + distance = CUR_Func_project( CUR.zp1.cur + point, + CUR.zp0.cur + CUR.GS.rp0 ); + + CUR_Func_move( &CUR.zp1, point, args[1] - distance ); + + CUR.GS.rp1 = CUR.GS.rp0; + CUR.GS.rp2 = point; + + if ( (CUR.opcode & 1) != 0 ) + CUR.GS.rp0 = point; + } + + + /*************************************************************************/ + /* */ + /* MDAP[a]: Move Direct Absolute Point */ + /* Opcode range: 0x2E-0x2F */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_MDAP( INS_ARG ) + { + FT_UShort point; + FT_F26Dot6 cur_dist, + distance; + + + point = (FT_UShort)args[0]; + + if ( BOUNDS( point, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + /* XXX: Is there some undocumented feature while in the */ + /* twilight zone? ? */ + if ( ( CUR.opcode & 1 ) != 0 ) + { + cur_dist = CUR_Func_project( CUR.zp0.cur + point, NULL_Vector ); + distance = CUR_Func_round( cur_dist, + CUR.tt_metrics.compensations[0] ) - cur_dist; + } + else + distance = 0; + + CUR_Func_move( &CUR.zp0, point, distance ); + + CUR.GS.rp0 = point; + CUR.GS.rp1 = point; + } + + + /*************************************************************************/ + /* */ + /* MIAP[a]: Move Indirect Absolute Point */ + /* Opcode range: 0x3E-0x3F */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_MIAP( INS_ARG ) + { + FT_ULong cvtEntry; + FT_UShort point; + FT_F26Dot6 distance, + org_dist; + + + cvtEntry = (FT_ULong)args[1]; + point = (FT_UShort)args[0]; + + if ( BOUNDS( point, CUR.zp0.n_points ) || + BOUNDS( cvtEntry, CUR.cvtSize ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + /* UNDOCUMENTED! */ + /* */ + /* The behaviour of an MIAP instruction is quite */ + /* different when used in the twilight zone. */ + /* */ + /* First, no control value cutin test is performed */ + /* as it would fail anyway. Second, the original */ + /* point, i.e. (org_x,org_y) of zp0.point, is set */ + /* to the absolute, unrounded distance found in */ + /* the CVT. */ + /* */ + /* This is used in the CVT programs of the Microsoft */ + /* fonts Arial, Times, etc., in order to re-adjust */ + /* some key font heights. It allows the use of the */ + /* IP instruction in the twilight zone, which */ + /* otherwise would be `illegal' according to the */ + /* specification. */ + /* */ + /* We implement it with a special sequence for the */ + /* twilight zone. This is a bad hack, but it seems */ + /* to work. */ + + distance = CUR_Func_read_cvt( cvtEntry ); + + if ( CUR.GS.gep0 == 0 ) /* If in twilight zone */ + { + CUR.zp0.org[point].x = TT_MulFix14( distance, CUR.GS.freeVector.x ); + CUR.zp0.org[point].y = TT_MulFix14( distance, CUR.GS.freeVector.y ), + CUR.zp0.cur[point] = CUR.zp0.org[point]; + } + + org_dist = CUR_Func_project( CUR.zp0.cur + point, NULL_Vector ); + + if ( ( CUR.opcode & 1 ) != 0 ) /* rounding and control cutin flag */ + { + if ( ABS( distance - org_dist ) > CUR.GS.control_value_cutin ) + distance = org_dist; + + distance = CUR_Func_round( distance, CUR.tt_metrics.compensations[0] ); + } + + CUR_Func_move( &CUR.zp0, point, distance - org_dist ); + + CUR.GS.rp0 = point; + CUR.GS.rp1 = point; + } + + + /*************************************************************************/ + /* */ + /* MDRP[abcde]: Move Direct Relative Point */ + /* Opcode range: 0xC0-0xDF */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_MDRP( INS_ARG ) + { + FT_UShort point; + FT_F26Dot6 org_dist, distance; + + + point = (FT_UShort)args[0]; + + if ( BOUNDS( point, CUR.zp1.n_points ) || + BOUNDS( CUR.GS.rp0, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + /* XXX: Is there some undocumented feature while in the */ + /* twilight zone? */ + + org_dist = CUR_Func_dualproj( CUR.zp1.org + point, + CUR.zp0.org + CUR.GS.rp0 ); + + /* single width cutin test */ + + if ( ABS( org_dist ) < CUR.GS.single_width_cutin ) + { + if ( org_dist >= 0 ) + org_dist = CUR.GS.single_width_value; + else + org_dist = -CUR.GS.single_width_value; + } + + /* round flag */ + + if ( ( CUR.opcode & 4 ) != 0 ) + distance = CUR_Func_round( + org_dist, + CUR.tt_metrics.compensations[CUR.opcode & 3] ); + else + distance = ROUND_None( + org_dist, + CUR.tt_metrics.compensations[CUR.opcode & 3] ); + + /* minimum distance flag */ + + if ( ( CUR.opcode & 8 ) != 0 ) + { + if ( org_dist >= 0 ) + { + if ( distance < CUR.GS.minimum_distance ) + distance = CUR.GS.minimum_distance; + } + else + { + if ( distance > -CUR.GS.minimum_distance ) + distance = -CUR.GS.minimum_distance; + } + } + + /* now move the point */ + + org_dist = CUR_Func_project( CUR.zp1.cur + point, + CUR.zp0.cur + CUR.GS.rp0 ); + + CUR_Func_move( &CUR.zp1, point, distance - org_dist ); + + CUR.GS.rp1 = CUR.GS.rp0; + CUR.GS.rp2 = point; + + if ( ( CUR.opcode & 16 ) != 0 ) + CUR.GS.rp0 = point; + } + + + /*************************************************************************/ + /* */ + /* MIRP[abcde]: Move Indirect Relative Point */ + /* Opcode range: 0xE0-0xFF */ + /* Stack: int32? uint32 --> */ + /* */ + static void + Ins_MIRP( INS_ARG ) + { + FT_UShort point; + FT_ULong cvtEntry; + + FT_F26Dot6 cvt_dist, + distance, + cur_dist, + org_dist; + + + point = (FT_UShort)args[0]; + cvtEntry = (FT_ULong)( args[1] + 1 ); + + /* XXX: UNDOCUMENTED! cvt[-1] = 0 always */ + + if ( BOUNDS( point, CUR.zp1.n_points ) || + BOUNDS( cvtEntry, CUR.cvtSize + 1 ) || + BOUNDS( CUR.GS.rp0, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + if ( !cvtEntry ) + cvt_dist = 0; + else + cvt_dist = CUR_Func_read_cvt( cvtEntry - 1 ); + + /* single width test */ + + if ( ABS( cvt_dist ) < CUR.GS.single_width_cutin ) + { + if ( cvt_dist >= 0 ) + cvt_dist = CUR.GS.single_width_value; + else + cvt_dist = -CUR.GS.single_width_value; + } + + /* XXX: UNDOCUMENTED! -- twilight zone */ + + if ( CUR.GS.gep1 == 0 ) + { + CUR.zp1.org[point].x = CUR.zp0.org[CUR.GS.rp0].x + + TT_MulFix14( cvt_dist, CUR.GS.freeVector.x ); + + CUR.zp1.org[point].y = CUR.zp0.org[CUR.GS.rp0].y + + TT_MulFix14( cvt_dist, CUR.GS.freeVector.y ); + + CUR.zp1.cur[point] = CUR.zp1.org[point]; + } + + org_dist = CUR_Func_dualproj( CUR.zp1.org + point, + CUR.zp0.org + CUR.GS.rp0 ); + + cur_dist = CUR_Func_project( CUR.zp1.cur + point, + CUR.zp0.cur + CUR.GS.rp0 ); + + /* auto-flip test */ + + if ( CUR.GS.auto_flip ) + { + if ( ( org_dist ^ cvt_dist ) < 0 ) + cvt_dist = -cvt_dist; + } + + /* control value cutin and round */ + + if ( ( CUR.opcode & 4 ) != 0 ) + { + /* XXX: UNDOCUMENTED! Only perform cut-in test when both points */ + /* refer to the same zone. */ + + if ( CUR.GS.gep0 == CUR.GS.gep1 ) + if ( ABS( cvt_dist - org_dist ) >= CUR.GS.control_value_cutin ) + cvt_dist = org_dist; + + distance = CUR_Func_round( + cvt_dist, + CUR.tt_metrics.compensations[CUR.opcode & 3] ); + } + else + distance = ROUND_None( + cvt_dist, + CUR.tt_metrics.compensations[CUR.opcode & 3] ); + + /* minimum distance test */ + + if ( ( CUR.opcode & 8 ) != 0 ) + { + if ( org_dist >= 0 ) + { + if ( distance < CUR.GS.minimum_distance ) + distance = CUR.GS.minimum_distance; + } + else + { + if ( distance > -CUR.GS.minimum_distance ) + distance = -CUR.GS.minimum_distance; + } + } + + CUR_Func_move( &CUR.zp1, point, distance - cur_dist ); + + CUR.GS.rp1 = CUR.GS.rp0; + + if ( ( CUR.opcode & 16 ) != 0 ) + CUR.GS.rp0 = point; + + /* XXX: UNDOCUMENTED! */ + + CUR.GS.rp2 = point; + } + + + /*************************************************************************/ + /* */ + /* ALIGNRP[]: ALIGN Relative Point */ + /* Opcode range: 0x3C */ + /* Stack: uint32 uint32... --> */ + /* */ + static void + Ins_ALIGNRP( INS_ARG ) + { + FT_UShort point; + FT_F26Dot6 distance; + + FT_UNUSED_ARG; + + + if ( CUR.top < CUR.GS.loop || + BOUNDS( CUR.GS.rp0, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + while ( CUR.GS.loop > 0 ) + { + CUR.args--; + + point = (FT_UShort)CUR.stack[CUR.args]; + + if ( BOUNDS( point, CUR.zp1.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + { + distance = CUR_Func_project( CUR.zp1.cur + point, + CUR.zp0.cur + CUR.GS.rp0 ); + + CUR_Func_move( &CUR.zp1, point, -distance ); + } + + CUR.GS.loop--; + } + + CUR.GS.loop = 1; + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* ISECT[]: moves point to InterSECTion */ + /* Opcode range: 0x0F */ + /* Stack: 5 * uint32 --> */ + /* */ + static void + Ins_ISECT( INS_ARG ) + { + FT_UShort point, + a0, a1, + b0, b1; + + FT_F26Dot6 discriminant; + + FT_F26Dot6 dx, dy, + dax, day, + dbx, dby; + + FT_F26Dot6 val; + + FT_Vector R; + + + point = (FT_UShort)args[0]; + + a0 = (FT_UShort)args[1]; + a1 = (FT_UShort)args[2]; + b0 = (FT_UShort)args[3]; + b1 = (FT_UShort)args[4]; + + if ( BOUNDS( b0, CUR.zp0.n_points ) || + BOUNDS( b1, CUR.zp0.n_points ) || + BOUNDS( a0, CUR.zp1.n_points ) || + BOUNDS( a1, CUR.zp1.n_points ) || + BOUNDS( point, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + dbx = CUR.zp0.cur[b1].x - CUR.zp0.cur[b0].x; + dby = CUR.zp0.cur[b1].y - CUR.zp0.cur[b0].y; + + dax = CUR.zp1.cur[a1].x - CUR.zp1.cur[a0].x; + day = CUR.zp1.cur[a1].y - CUR.zp1.cur[a0].y; + + dx = CUR.zp0.cur[b0].x - CUR.zp1.cur[a0].x; + dy = CUR.zp0.cur[b0].y - CUR.zp1.cur[a0].y; + + CUR.zp2.tags[point] |= FT_Curve_Tag_Touch_Both; + + discriminant = TT_MULDIV( dax, -dby, 0x40 ) + + TT_MULDIV( day, dbx, 0x40 ); + + if ( ABS( discriminant ) >= 0x40 ) + { + val = TT_MULDIV( dx, -dby, 0x40 ) + TT_MULDIV( dy, dbx, 0x40 ); + + R.x = TT_MULDIV( val, dax, discriminant ); + R.y = TT_MULDIV( val, day, discriminant ); + + CUR.zp2.cur[point].x = CUR.zp1.cur[a0].x + R.x; + CUR.zp2.cur[point].y = CUR.zp1.cur[a0].y + R.y; + } + else + { + /* else, take the middle of the middles of A and B */ + + CUR.zp2.cur[point].x = ( CUR.zp1.cur[a0].x + + CUR.zp1.cur[a1].x + + CUR.zp0.cur[b0].x + + CUR.zp0.cur[b1].x ) / 4; + CUR.zp2.cur[point].y = ( CUR.zp1.cur[a0].y + + CUR.zp1.cur[a1].y + + CUR.zp0.cur[b0].y + + CUR.zp0.cur[b1].y ) / 4; + } + } + + + /*************************************************************************/ + /* */ + /* ALIGNPTS[]: ALIGN PoinTS */ + /* Opcode range: 0x27 */ + /* Stack: uint32 uint32 --> */ + /* */ + static void + Ins_ALIGNPTS( INS_ARG ) + { + FT_UShort p1, p2; + FT_F26Dot6 distance; + + + p1 = (FT_UShort)args[0]; + p2 = (FT_UShort)args[1]; + + if ( BOUNDS( args[0], CUR.zp1.n_points ) || + BOUNDS( args[1], CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + distance = CUR_Func_project( CUR.zp0.cur + p2, + CUR.zp1.cur + p1 ) / 2; + + CUR_Func_move( &CUR.zp1, p1, distance ); + CUR_Func_move( &CUR.zp0, p2, -distance ); + } + + + /*************************************************************************/ + /* */ + /* IP[]: Interpolate Point */ + /* Opcode range: 0x39 */ + /* Stack: uint32... --> */ + /* */ + static void + Ins_IP( INS_ARG ) + { + FT_F26Dot6 org_a, org_b, org_x, + cur_a, cur_b, cur_x, + distance; + FT_UShort point; + + FT_UNUSED_ARG; + + + if ( CUR.top < CUR.GS.loop ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + + /* XXX: There are some glyphs in some braindead but popular */ + /* fonts out there (e.g. [aeu]grave in monotype.ttf) */ + /* calling IP[] with bad values of rp[12]. */ + /* Do something sane when this odd thing happens. */ + + if ( BOUNDS( CUR.GS.rp1, CUR.zp0.n_points ) || + BOUNDS( CUR.GS.rp2, CUR.zp1.n_points ) ) + { + org_a = cur_a = 0; + org_b = cur_b = 0; + } + else + { + org_a = CUR_Func_dualproj( CUR.zp0.org + CUR.GS.rp1, NULL_Vector ); + org_b = CUR_Func_dualproj( CUR.zp1.org + CUR.GS.rp2, NULL_Vector ); + + cur_a = CUR_Func_project( CUR.zp0.cur + CUR.GS.rp1, NULL_Vector ); + cur_b = CUR_Func_project( CUR.zp1.cur + CUR.GS.rp2, NULL_Vector ); + } + + while ( CUR.GS.loop > 0 ) + { + CUR.args--; + + point = (FT_UShort)CUR.stack[CUR.args]; + if ( BOUNDS( point, CUR.zp2.n_points ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + { + org_x = CUR_Func_dualproj( CUR.zp2.org + point, NULL_Vector ); + cur_x = CUR_Func_project ( CUR.zp2.cur + point, NULL_Vector ); + + if ( ( org_a <= org_b && org_x <= org_a ) || + ( org_a > org_b && org_x >= org_a ) ) + + distance = ( cur_a - org_a ) + ( org_x - cur_x ); + + else if ( ( org_a <= org_b && org_x >= org_b ) || + ( org_a > org_b && org_x < org_b ) ) + + distance = ( cur_b - org_b ) + ( org_x - cur_x ); + + else + /* note: it seems that rounding this value isn't a good */ + /* idea (cf. width of capital `S' in Times) */ + + distance = TT_MULDIV( cur_b - cur_a, + org_x - org_a, + org_b - org_a ) + ( cur_a - cur_x ); + + CUR_Func_move( &CUR.zp2, point, distance ); + } + + CUR.GS.loop--; + } + + CUR.GS.loop = 1; + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* UTP[a]: UnTouch Point */ + /* Opcode range: 0x29 */ + /* Stack: uint32 --> */ + /* */ + static void + Ins_UTP( INS_ARG ) + { + FT_UShort point; + FT_Byte mask; + + + point = (FT_UShort)args[0]; + + if ( BOUNDS( point, CUR.zp0.n_points ) ) + { + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + return; + } + + mask = 0xFF; + + if ( CUR.GS.freeVector.x != 0 ) + mask &= ~FT_Curve_Tag_Touch_X; + + if ( CUR.GS.freeVector.y != 0 ) + mask &= ~FT_Curve_Tag_Touch_Y; + + CUR.zp0.tags[point] &= mask; + } + + + /* Local variables for Ins_IUP: */ + struct LOC_Ins_IUP + { + FT_Vector* orgs; /* original and current coordinate */ + FT_Vector* curs; /* arrays */ + }; + + + static void + Shift( FT_UInt p1, + FT_UInt p2, + FT_UInt p, + struct LOC_Ins_IUP* LINK ) + { + FT_UInt i; + FT_F26Dot6 x; + + + x = LINK->curs[p].x - LINK->orgs[p].x; + + for ( i = p1; i < p; i++ ) + LINK->curs[i].x += x; + + for ( i = p + 1; i <= p2; i++ ) + LINK->curs[i].x += x; + } + + + static void + Interp( FT_UInt p1, + FT_UInt p2, + FT_UInt ref1, + FT_UInt ref2, + struct LOC_Ins_IUP* LINK ) + { + FT_UInt i; + FT_F26Dot6 x, x1, x2, d1, d2; + + + if ( p1 > p2 ) + return; + + x1 = LINK->orgs[ref1].x; + d1 = LINK->curs[ref1].x - LINK->orgs[ref1].x; + x2 = LINK->orgs[ref2].x; + d2 = LINK->curs[ref2].x - LINK->orgs[ref2].x; + + if ( x1 == x2 ) + { + for ( i = p1; i <= p2; i++ ) + { + x = LINK->orgs[i].x; + + if ( x <= x1 ) + x += d1; + else + x += d2; + + LINK->curs[i].x = x; + } + return; + } + + if ( x1 < x2 ) + { + for ( i = p1; i <= p2; i++ ) + { + x = LINK->orgs[i].x; + + if ( x <= x1 ) + x += d1; + else + { + if ( x >= x2 ) + x += d2; + else + x = LINK->curs[ref1].x + + TT_MULDIV( x - x1, + LINK->curs[ref2].x - LINK->curs[ref1].x, + x2 - x1 ); + } + LINK->curs[i].x = x; + } + return; + } + + /* x2 < x1 */ + + for ( i = p1; i <= p2; i++ ) + { + x = LINK->orgs[i].x; + if ( x <= x2 ) + x += d2; + else + { + if ( x >= x1 ) + x += d1; + else + x = LINK->curs[ref1].x + + TT_MULDIV( x - x1, + LINK->curs[ref2].x - LINK->curs[ref1].x, + x2 - x1 ); + } + LINK->curs[i].x = x; + } + } + + + /*************************************************************************/ + /* */ + /* IUP[a]: Interpolate Untouched Points */ + /* Opcode range: 0x30-0x31 */ + /* Stack: --> */ + /* */ + static void + Ins_IUP( INS_ARG ) + { + struct LOC_Ins_IUP V; + FT_Byte mask; + + FT_UInt first_point; /* first point of contour */ + FT_UInt end_point; /* end point (last+1) of contour */ + + FT_UInt first_touched; /* first touched point in contour */ + FT_UInt cur_touched; /* current touched point in contour */ + + FT_UInt point; /* current point */ + FT_Short contour; /* current contour */ + + FT_UNUSED_ARG; + + + if ( CUR.opcode & 1 ) + { + mask = FT_Curve_Tag_Touch_X; + V.orgs = CUR.pts.org; + V.curs = CUR.pts.cur; + } + else + { + mask = FT_Curve_Tag_Touch_Y; + V.orgs = (FT_Vector*)( (FT_Pos*)CUR.pts.org + 1 ); + V.curs = (FT_Vector*)( (FT_Pos*)CUR.pts.cur + 1 ); + } + + contour = 0; + point = 0; + + do + { + end_point = CUR.pts.contours[contour]; + first_point = point; + + while ( point <= end_point && (CUR.pts.tags[point] & mask) == 0 ) + point++; + + if ( point <= end_point ) + { + first_touched = point; + cur_touched = point; + + point++; + + while ( point <= end_point ) + { + if ( ( CUR.pts.tags[point] & mask ) != 0 ) + { + if ( point > 0 ) + Interp( cur_touched + 1, + point - 1, + cur_touched, + point, + &V ); + cur_touched = point; + } + + point++; + } + + if ( cur_touched == first_touched ) + Shift( first_point, end_point, cur_touched, &V ); + else + { + Interp( (FT_UShort)( cur_touched + 1 ), + end_point, + cur_touched, + first_touched, + &V ); + + if ( first_touched > 0 ) + Interp( first_point, + first_touched - 1, + cur_touched, + first_touched, + &V ); + } + } + contour++; + } while ( contour < CUR.pts.n_contours ); + } + + + /*************************************************************************/ + /* */ + /* DELTAPn[]: DELTA exceptions P1, P2, P3 */ + /* Opcode range: 0x5D,0x71,0x72 */ + /* Stack: uint32 (2 * uint32)... --> */ + /* */ + static void + Ins_DELTAP( INS_ARG ) + { + FT_ULong k, nump; + FT_UShort A; + FT_ULong C; + FT_Long B; + + + nump = (FT_ULong)args[0]; /* some points theoretically may occur more + than once, thus UShort isn't enough */ + + for ( k = 1; k <= nump; k++ ) + { + if ( CUR.args < 2 ) + { + CUR.error = TT_Err_Too_Few_Arguments; + return; + } + + CUR.args -= 2; + + A = (FT_UShort)CUR.stack[CUR.args + 1]; + B = CUR.stack[CUR.args]; + + /* XXX: Because some popular fonts contain some invalid DeltaP */ + /* instructions, we simply ignore them when the stacked */ + /* point reference is off limit, rather than returning an */ + /* error. As a delta instruction doesn't change a glyph */ + /* in great ways, this shouldn't be a problem. */ + + if ( !BOUNDS( A, CUR.zp0.n_points ) ) + { + C = ( (FT_ULong)B & 0xF0 ) >> 4; + + switch ( CUR.opcode ) + { + case 0x5D: + break; + + case 0x71: + C += 16; + break; + + case 0x72: + C += 32; + break; + } + + C += CUR.GS.delta_base; + + if ( CURRENT_Ppem() == (FT_Long)C ) + { + B = ( (FT_ULong)B & 0xF ) - 8; + if ( B >= 0 ) + B++; + B = B * 64 / ( 1L << CUR.GS.delta_shift ); + + CUR_Func_move( &CUR.zp0, A, B ); + } + } + else + if ( CUR.pedantic_hinting ) + CUR.error = TT_Err_Invalid_Reference; + } + + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* DELTACn[]: DELTA exceptions C1, C2, C3 */ + /* Opcode range: 0x73,0x74,0x75 */ + /* Stack: uint32 (2 * uint32)... --> */ + /* */ + static void + Ins_DELTAC( INS_ARG ) + { + FT_ULong nump, k; + FT_ULong A, C; + FT_Long B; + + + nump = (FT_ULong)args[0]; + + for ( k = 1; k <= nump; k++ ) + { + if ( CUR.args < 2 ) + { + CUR.error = TT_Err_Too_Few_Arguments; + return; + } + + CUR.args -= 2; + + A = (FT_ULong)CUR.stack[CUR.args + 1]; + B = CUR.stack[CUR.args]; + + if ( BOUNDS( A, CUR.cvtSize ) ) + { + if ( CUR.pedantic_hinting ) + { + CUR.error = TT_Err_Invalid_Reference; + return; + } + } + else + { + C = ( (FT_ULong)B & 0xF0 ) >> 4; + + switch ( CUR.opcode ) + { + case 0x73: + break; + + case 0x74: + C += 16; + break; + + case 0x75: + C += 32; + break; + } + + C += CUR.GS.delta_base; + + if ( CURRENT_Ppem() == (FT_Long)C ) + { + B = ( (FT_ULong)B & 0xF ) - 8; + if ( B >= 0 ) + B++; + B = B * 64 / ( 1L << CUR.GS.delta_shift ); + + CUR_Func_move_cvt( A, B ); + } + } + } + + CUR.new_top = CUR.args; + } + + + /*************************************************************************/ + /* */ + /* MISC. INSTRUCTIONS */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* GETINFO[]: GET INFOrmation */ + /* Opcode range: 0x88 */ + /* Stack: uint32 --> uint32 */ + /* */ + /* XXX: According to Apple specs, bits 1 & 2 of the argument ought to be */ + /* consulted before rotated/stretched info is returned. */ + static void + Ins_GETINFO( INS_ARG ) + { + FT_Long K; + + + K = 0; + + /* We return then Windows 3.1 version number */ + /* for the font scaler */ + if ( ( args[0] & 1 ) != 0 ) + K = 3; + + /* Has the glyph been rotated ? */ + if ( CUR.tt_metrics.rotated ) + K |= 0x80; + + /* Has the glyph been stretched ? */ + if ( CUR.tt_metrics.stretched ) + K |= 0x100; + + args[0] = K; + } + + + static void + Ins_UNKNOWN( INS_ARG ) + { + TT_DefRecord* def = CUR.IDefs; + TT_DefRecord* limit = def + CUR.numIDefs; + + FT_UNUSED_ARG; + + + for ( ; def < limit; def++ ) + { + if ( (FT_Byte)def->opc == CUR.opcode && def->active ) + { + TT_CallRec* call; + + + if ( CUR.callTop >= CUR.callSize ) + { + CUR.error = TT_Err_Stack_Overflow; + return; + } + + call = CUR.callStack + CUR.callTop++; + + call->Caller_Range = CUR.curRange; + call->Caller_IP = CUR.IP+1; + call->Cur_Count = 1; + call->Cur_Restart = def->start; + + INS_Goto_CodeRange( def->range, def->start ); + + CUR.step_ins = FALSE; + return; + } + } + + CUR.error = TT_Err_Invalid_Opcode; + } + + +#ifndef TT_CONFIG_OPTION_INTERPRETER_SWITCH + + + static + TInstruction_Function Instruct_Dispatch[256] = + { + /* Opcodes are gathered in groups of 16. */ + /* Please keep the spaces as they are. */ + + /* SVTCA y */ Ins_SVTCA, + /* SVTCA x */ Ins_SVTCA, + /* SPvTCA y */ Ins_SPVTCA, + /* SPvTCA x */ Ins_SPVTCA, + /* SFvTCA y */ Ins_SFVTCA, + /* SFvTCA x */ Ins_SFVTCA, + /* SPvTL // */ Ins_SPVTL, + /* SPvTL + */ Ins_SPVTL, + /* SFvTL // */ Ins_SFVTL, + /* SFvTL + */ Ins_SFVTL, + /* SPvFS */ Ins_SPVFS, + /* SFvFS */ Ins_SFVFS, + /* GPV */ Ins_GPV, + /* GFV */ Ins_GFV, + /* SFvTPv */ Ins_SFVTPV, + /* ISECT */ Ins_ISECT, + + /* SRP0 */ Ins_SRP0, + /* SRP1 */ Ins_SRP1, + /* SRP2 */ Ins_SRP2, + /* SZP0 */ Ins_SZP0, + /* SZP1 */ Ins_SZP1, + /* SZP2 */ Ins_SZP2, + /* SZPS */ Ins_SZPS, + /* SLOOP */ Ins_SLOOP, + /* RTG */ Ins_RTG, + /* RTHG */ Ins_RTHG, + /* SMD */ Ins_SMD, + /* ELSE */ Ins_ELSE, + /* JMPR */ Ins_JMPR, + /* SCvTCi */ Ins_SCVTCI, + /* SSwCi */ Ins_SSWCI, + /* SSW */ Ins_SSW, + + /* DUP */ Ins_DUP, + /* POP */ Ins_POP, + /* CLEAR */ Ins_CLEAR, + /* SWAP */ Ins_SWAP, + /* DEPTH */ Ins_DEPTH, + /* CINDEX */ Ins_CINDEX, + /* MINDEX */ Ins_MINDEX, + /* AlignPTS */ Ins_ALIGNPTS, + /* INS_0x28 */ Ins_UNKNOWN, + /* UTP */ Ins_UTP, + /* LOOPCALL */ Ins_LOOPCALL, + /* CALL */ Ins_CALL, + /* FDEF */ Ins_FDEF, + /* ENDF */ Ins_ENDF, + /* MDAP[0] */ Ins_MDAP, + /* MDAP[1] */ Ins_MDAP, + + /* IUP[0] */ Ins_IUP, + /* IUP[1] */ Ins_IUP, + /* SHP[0] */ Ins_SHP, + /* SHP[1] */ Ins_SHP, + /* SHC[0] */ Ins_SHC, + /* SHC[1] */ Ins_SHC, + /* SHZ[0] */ Ins_SHZ, + /* SHZ[1] */ Ins_SHZ, + /* SHPIX */ Ins_SHPIX, + /* IP */ Ins_IP, + /* MSIRP[0] */ Ins_MSIRP, + /* MSIRP[1] */ Ins_MSIRP, + /* AlignRP */ Ins_ALIGNRP, + /* RTDG */ Ins_RTDG, + /* MIAP[0] */ Ins_MIAP, + /* MIAP[1] */ Ins_MIAP, + + /* NPushB */ Ins_NPUSHB, + /* NPushW */ Ins_NPUSHW, + /* WS */ Ins_WS, + /* RS */ Ins_RS, + /* WCvtP */ Ins_WCVTP, + /* RCvt */ Ins_RCVT, + /* GC[0] */ Ins_GC, + /* GC[1] */ Ins_GC, + /* SCFS */ Ins_SCFS, + /* MD[0] */ Ins_MD, + /* MD[1] */ Ins_MD, + /* MPPEM */ Ins_MPPEM, + /* MPS */ Ins_MPS, + /* FlipON */ Ins_FLIPON, + /* FlipOFF */ Ins_FLIPOFF, + /* DEBUG */ Ins_DEBUG, + + /* LT */ Ins_LT, + /* LTEQ */ Ins_LTEQ, + /* GT */ Ins_GT, + /* GTEQ */ Ins_GTEQ, + /* EQ */ Ins_EQ, + /* NEQ */ Ins_NEQ, + /* ODD */ Ins_ODD, + /* EVEN */ Ins_EVEN, + /* IF */ Ins_IF, + /* EIF */ Ins_EIF, + /* AND */ Ins_AND, + /* OR */ Ins_OR, + /* NOT */ Ins_NOT, + /* DeltaP1 */ Ins_DELTAP, + /* SDB */ Ins_SDB, + /* SDS */ Ins_SDS, + + /* ADD */ Ins_ADD, + /* SUB */ Ins_SUB, + /* DIV */ Ins_DIV, + /* MUL */ Ins_MUL, + /* ABS */ Ins_ABS, + /* NEG */ Ins_NEG, + /* FLOOR */ Ins_FLOOR, + /* CEILING */ Ins_CEILING, + /* ROUND[0] */ Ins_ROUND, + /* ROUND[1] */ Ins_ROUND, + /* ROUND[2] */ Ins_ROUND, + /* ROUND[3] */ Ins_ROUND, + /* NROUND[0] */ Ins_NROUND, + /* NROUND[1] */ Ins_NROUND, + /* NROUND[2] */ Ins_NROUND, + /* NROUND[3] */ Ins_NROUND, + + /* WCvtF */ Ins_WCVTF, + /* DeltaP2 */ Ins_DELTAP, + /* DeltaP3 */ Ins_DELTAP, + /* DeltaCn[0] */ Ins_DELTAC, + /* DeltaCn[1] */ Ins_DELTAC, + /* DeltaCn[2] */ Ins_DELTAC, + /* SROUND */ Ins_SROUND, + /* S45Round */ Ins_S45ROUND, + /* JROT */ Ins_JROT, + /* JROF */ Ins_JROF, + /* ROFF */ Ins_ROFF, + /* INS_0x7B */ Ins_UNKNOWN, + /* RUTG */ Ins_RUTG, + /* RDTG */ Ins_RDTG, + /* SANGW */ Ins_SANGW, + /* AA */ Ins_AA, + + /* FlipPT */ Ins_FLIPPT, + /* FlipRgON */ Ins_FLIPRGON, + /* FlipRgOFF */ Ins_FLIPRGOFF, + /* INS_0x83 */ Ins_UNKNOWN, + /* INS_0x84 */ Ins_UNKNOWN, + /* ScanCTRL */ Ins_SCANCTRL, + /* SDPVTL[0] */ Ins_SDPVTL, + /* SDPVTL[1] */ Ins_SDPVTL, + /* GetINFO */ Ins_GETINFO, + /* IDEF */ Ins_IDEF, + /* ROLL */ Ins_ROLL, + /* MAX */ Ins_MAX, + /* MIN */ Ins_MIN, + /* ScanTYPE */ Ins_SCANTYPE, + /* InstCTRL */ Ins_INSTCTRL, + /* INS_0x8F */ Ins_UNKNOWN, + + /* INS_0x90 */ Ins_UNKNOWN, + /* INS_0x91 */ Ins_UNKNOWN, + /* INS_0x92 */ Ins_UNKNOWN, + /* INS_0x93 */ Ins_UNKNOWN, + /* INS_0x94 */ Ins_UNKNOWN, + /* INS_0x95 */ Ins_UNKNOWN, + /* INS_0x96 */ Ins_UNKNOWN, + /* INS_0x97 */ Ins_UNKNOWN, + /* INS_0x98 */ Ins_UNKNOWN, + /* INS_0x99 */ Ins_UNKNOWN, + /* INS_0x9A */ Ins_UNKNOWN, + /* INS_0x9B */ Ins_UNKNOWN, + /* INS_0x9C */ Ins_UNKNOWN, + /* INS_0x9D */ Ins_UNKNOWN, + /* INS_0x9E */ Ins_UNKNOWN, + /* INS_0x9F */ Ins_UNKNOWN, + + /* INS_0xA0 */ Ins_UNKNOWN, + /* INS_0xA1 */ Ins_UNKNOWN, + /* INS_0xA2 */ Ins_UNKNOWN, + /* INS_0xA3 */ Ins_UNKNOWN, + /* INS_0xA4 */ Ins_UNKNOWN, + /* INS_0xA5 */ Ins_UNKNOWN, + /* INS_0xA6 */ Ins_UNKNOWN, + /* INS_0xA7 */ Ins_UNKNOWN, + /* INS_0xA8 */ Ins_UNKNOWN, + /* INS_0xA9 */ Ins_UNKNOWN, + /* INS_0xAA */ Ins_UNKNOWN, + /* INS_0xAB */ Ins_UNKNOWN, + /* INS_0xAC */ Ins_UNKNOWN, + /* INS_0xAD */ Ins_UNKNOWN, + /* INS_0xAE */ Ins_UNKNOWN, + /* INS_0xAF */ Ins_UNKNOWN, + + /* PushB[0] */ Ins_PUSHB, + /* PushB[1] */ Ins_PUSHB, + /* PushB[2] */ Ins_PUSHB, + /* PushB[3] */ Ins_PUSHB, + /* PushB[4] */ Ins_PUSHB, + /* PushB[5] */ Ins_PUSHB, + /* PushB[6] */ Ins_PUSHB, + /* PushB[7] */ Ins_PUSHB, + /* PushW[0] */ Ins_PUSHW, + /* PushW[1] */ Ins_PUSHW, + /* PushW[2] */ Ins_PUSHW, + /* PushW[3] */ Ins_PUSHW, + /* PushW[4] */ Ins_PUSHW, + /* PushW[5] */ Ins_PUSHW, + /* PushW[6] */ Ins_PUSHW, + /* PushW[7] */ Ins_PUSHW, + + /* MDRP[00] */ Ins_MDRP, + /* MDRP[01] */ Ins_MDRP, + /* MDRP[02] */ Ins_MDRP, + /* MDRP[03] */ Ins_MDRP, + /* MDRP[04] */ Ins_MDRP, + /* MDRP[05] */ Ins_MDRP, + /* MDRP[06] */ Ins_MDRP, + /* MDRP[07] */ Ins_MDRP, + /* MDRP[08] */ Ins_MDRP, + /* MDRP[09] */ Ins_MDRP, + /* MDRP[10] */ Ins_MDRP, + /* MDRP[11] */ Ins_MDRP, + /* MDRP[12] */ Ins_MDRP, + /* MDRP[13] */ Ins_MDRP, + /* MDRP[14] */ Ins_MDRP, + /* MDRP[15] */ Ins_MDRP, + + /* MDRP[16] */ Ins_MDRP, + /* MDRP[17] */ Ins_MDRP, + /* MDRP[18] */ Ins_MDRP, + /* MDRP[19] */ Ins_MDRP, + /* MDRP[20] */ Ins_MDRP, + /* MDRP[21] */ Ins_MDRP, + /* MDRP[22] */ Ins_MDRP, + /* MDRP[23] */ Ins_MDRP, + /* MDRP[24] */ Ins_MDRP, + /* MDRP[25] */ Ins_MDRP, + /* MDRP[26] */ Ins_MDRP, + /* MDRP[27] */ Ins_MDRP, + /* MDRP[28] */ Ins_MDRP, + /* MDRP[29] */ Ins_MDRP, + /* MDRP[30] */ Ins_MDRP, + /* MDRP[31] */ Ins_MDRP, + + /* MIRP[00] */ Ins_MIRP, + /* MIRP[01] */ Ins_MIRP, + /* MIRP[02] */ Ins_MIRP, + /* MIRP[03] */ Ins_MIRP, + /* MIRP[04] */ Ins_MIRP, + /* MIRP[05] */ Ins_MIRP, + /* MIRP[06] */ Ins_MIRP, + /* MIRP[07] */ Ins_MIRP, + /* MIRP[08] */ Ins_MIRP, + /* MIRP[09] */ Ins_MIRP, + /* MIRP[10] */ Ins_MIRP, + /* MIRP[11] */ Ins_MIRP, + /* MIRP[12] */ Ins_MIRP, + /* MIRP[13] */ Ins_MIRP, + /* MIRP[14] */ Ins_MIRP, + /* MIRP[15] */ Ins_MIRP, + + /* MIRP[16] */ Ins_MIRP, + /* MIRP[17] */ Ins_MIRP, + /* MIRP[18] */ Ins_MIRP, + /* MIRP[19] */ Ins_MIRP, + /* MIRP[20] */ Ins_MIRP, + /* MIRP[21] */ Ins_MIRP, + /* MIRP[22] */ Ins_MIRP, + /* MIRP[23] */ Ins_MIRP, + /* MIRP[24] */ Ins_MIRP, + /* MIRP[25] */ Ins_MIRP, + /* MIRP[26] */ Ins_MIRP, + /* MIRP[27] */ Ins_MIRP, + /* MIRP[28] */ Ins_MIRP, + /* MIRP[29] */ Ins_MIRP, + /* MIRP[30] */ Ins_MIRP, + /* MIRP[31] */ Ins_MIRP + }; + + +#endif /* !TT_CONFIG_OPTION_INTERPRETER_SWITCH */ + + + /*************************************************************************/ + /* */ + /* RUN */ + /* */ + /* This function executes a run of opcodes. It will exit in the */ + /* following cases: */ + /* */ + /* - Errors (in which case it returns FALSE). */ + /* */ + /* - Reaching the end of the main code range (returns TRUE). */ + /* Reaching the end of a code range within a function call is an */ + /* error. */ + /* */ + /* - After executing one single opcode, if the flag `Instruction_Trap' */ + /* is set to TRUE (returns TRUE). */ + /* */ + /* On exit whith TRUE, test IP < CodeSize to know wether it comes from */ + /* an instruction trap or a normal termination. */ + /* */ + /* */ + /* Note: The documented DEBUG opcode pops a value from the stack. This */ + /* behaviour is unsupported; here a DEBUG opcode is always an */ + /* error. */ + /* */ + /* */ + /* THIS IS THE INTERPRETER'S MAIN LOOP. */ + /* */ + /* Instructions appear in the specification's order. */ + /* */ + /*************************************************************************/ + + + /* documentation is in ttinterp.h */ + + FT_EXPORT_DEF( FT_Error ) + TT_RunIns( TT_ExecContext exc ) + { + FT_Long ins_counter = 0; /* executed instructions counter */ + + +#ifdef TT_CONFIG_OPTION_STATIC_RASTER + cur = *exc; +#endif + + /* set CVT functions */ + CUR.tt_metrics.ratio = 0; + if ( CUR.metrics.x_ppem != CUR.metrics.y_ppem ) + { + /* non-square pixels, use the stretched routines */ + CUR.func_read_cvt = Read_CVT_Stretched; + CUR.func_write_cvt = Write_CVT_Stretched; + CUR.func_move_cvt = Move_CVT_Stretched; + } + else + { + /* square pixels, use normal routines */ + CUR.func_read_cvt = Read_CVT; + CUR.func_write_cvt = Write_CVT; + CUR.func_move_cvt = Move_CVT; + } + + COMPUTE_Funcs(); + COMPUTE_Round( (FT_Byte)exc->GS.round_state ); + + do + { + CUR.opcode = CUR.code[CUR.IP]; + + if ( ( CUR.length = opcode_length[CUR.opcode] ) < 0 ) + { + if ( CUR.IP + 1 > CUR.codeSize ) + goto LErrorCodeOverflow_; + + CUR.length = CUR.code[CUR.IP + 1] + 2; + } + + if ( CUR.IP + CUR.length > CUR.codeSize ) + goto LErrorCodeOverflow_; + + /* First, let's check for empty stack and overflow */ + CUR.args = CUR.top - ( Pop_Push_Count[CUR.opcode] >> 4 ); + + /* `args' is the top of the stack once arguments have been popped. */ + /* One can also interpret it as the index of the last argument. */ + if ( CUR.args < 0 ) + { + CUR.error = TT_Err_Too_Few_Arguments; + goto LErrorLabel_; + } + + CUR.new_top = CUR.args + ( Pop_Push_Count[CUR.opcode] & 15 ); + + /* `new_top' is the new top of the stack, after the instruction's */ + /* execution. `top' will be set to `new_top' after the `switch' */ + /* statement. */ + if ( CUR.new_top > CUR.stackSize ) + { + CUR.error = TT_Err_Stack_Overflow; + goto LErrorLabel_; + } + + CUR.step_ins = TRUE; + CUR.error = TT_Err_Ok; + +#ifdef TT_CONFIG_OPTION_INTERPRETER_SWITCH + + { + FT_Long* args = CUR.stack + CUR.args; + FT_Byte opcode = CUR.opcode; + + +#undef ARRAY_BOUND_ERROR +#define ARRAY_BOUND_ERROR goto Set_Invalid_Ref + + + switch ( opcode ) + { + case 0x00: /* SVTCA y */ + case 0x01: /* SVTCA x */ + case 0x02: /* SPvTCA y */ + case 0x03: /* SPvTCA x */ + case 0x04: /* SFvTCA y */ + case 0x05: /* SFvTCA x */ + { + FT_Short AA, BB; + + + AA = (FT_Short)( ( opcode & 1 ) << 14 ); + BB = (FT_Short)( AA ^ 0x4000 ); + + if ( opcode < 4 ) + { + CUR.GS.projVector.x = AA; + CUR.GS.projVector.y = BB; + + CUR.GS.dualVector.x = AA; + CUR.GS.dualVector.y = BB; + } + + if ( ( opcode & 2 ) == 0 ) + { + CUR.GS.freeVector.x = AA; + CUR.GS.freeVector.y = BB; + } + + COMPUTE_Funcs(); + } + break; + + case 0x06: /* SPvTL // */ + case 0x07: /* SPvTL + */ + DO_SPVTL + break; + + case 0x08: /* SFvTL // */ + case 0x09: /* SFvTL + */ + DO_SFVTL + break; + + case 0x0A: /* SPvFS */ + DO_SPVFS + break; + + case 0x0B: /* SFvFS */ + DO_SFVFS + break; + + case 0x0C: /* GPV */ + DO_GPV + break; + + case 0x0D: /* GFV */ + DO_GFV + break; + + case 0x0E: /* SFvTPv */ + DO_SFVTPV + break; + + case 0x0F: /* ISECT */ + Ins_ISECT( EXEC_ARG_ args ); + break; + + case 0x10: /* SRP0 */ + DO_SRP0 + break; + + case 0x11: /* SRP1 */ + DO_SRP1 + break; + + case 0x12: /* SRP2 */ + DO_SRP2 + break; + + case 0x13: /* SZP0 */ + Ins_SZP0( EXEC_ARG_ args ); + break; + + case 0x14: /* SZP1 */ + Ins_SZP1( EXEC_ARG_ args ); + break; + + case 0x15: /* SZP2 */ + Ins_SZP2( EXEC_ARG_ args ); + break; + + case 0x16: /* SZPS */ + Ins_SZPS( EXEC_ARG_ args ); + break; + + case 0x17: /* SLOOP */ + DO_SLOOP + break; + + case 0x18: /* RTG */ + DO_RTG + break; + + case 0x19: /* RTHG */ + DO_RTHG + break; + + case 0x1A: /* SMD */ + DO_SMD + break; + + case 0x1B: /* ELSE */ + Ins_ELSE( EXEC_ARG_ args ); + break; + + case 0x1C: /* JMPR */ + DO_JMPR + break; + + case 0x1D: /* SCVTCI */ + DO_SCVTCI + break; + + case 0x1E: /* SSWCI */ + DO_SSWCI + break; + + case 0x1F: /* SSW */ + DO_SSW + break; + + case 0x20: /* DUP */ + DO_DUP + break; + + case 0x21: /* POP */ + /* nothing :-) */ + break; + + case 0x22: /* CLEAR */ + DO_CLEAR + break; + + case 0x23: /* SWAP */ + DO_SWAP + break; + + case 0x24: /* DEPTH */ + DO_DEPTH + break; + + case 0x25: /* CINDEX */ + DO_CINDEX + break; + + case 0x26: /* MINDEX */ + Ins_MINDEX( EXEC_ARG_ args ); + break; + + case 0x27: /* ALIGNPTS */ + Ins_ALIGNPTS( EXEC_ARG_ args ); + break; + + case 0x28: /* ???? */ + Ins_UNKNOWN( EXEC_ARG_ args ); + break; + + case 0x29: /* UTP */ + Ins_UTP( EXEC_ARG_ args ); + break; + + case 0x2A: /* LOOPCALL */ + Ins_LOOPCALL( EXEC_ARG_ args ); + break; + + case 0x2B: /* CALL */ + Ins_CALL( EXEC_ARG_ args ); + break; + + case 0x2C: /* FDEF */ + Ins_FDEF( EXEC_ARG_ args ); + break; + + case 0x2D: /* ENDF */ + Ins_ENDF( EXEC_ARG_ args ); + break; + + case 0x2E: /* MDAP */ + case 0x2F: /* MDAP */ + Ins_MDAP( EXEC_ARG_ args ); + break; + + + case 0x30: /* IUP */ + case 0x31: /* IUP */ + Ins_IUP( EXEC_ARG_ args ); + break; + + case 0x32: /* SHP */ + case 0x33: /* SHP */ + Ins_SHP( EXEC_ARG_ args ); + break; + + case 0x34: /* SHC */ + case 0x35: /* SHC */ + Ins_SHC( EXEC_ARG_ args ); + break; + + case 0x36: /* SHZ */ + case 0x37: /* SHZ */ + Ins_SHZ( EXEC_ARG_ args ); + break; + + case 0x38: /* SHPIX */ + Ins_SHPIX( EXEC_ARG_ args ); + break; + + case 0x39: /* IP */ + Ins_IP( EXEC_ARG_ args ); + break; + + case 0x3A: /* MSIRP */ + case 0x3B: /* MSIRP */ + Ins_MSIRP( EXEC_ARG_ args ); + break; + + case 0x3C: /* AlignRP */ + Ins_ALIGNRP( EXEC_ARG_ args ); + break; + + case 0x3D: /* RTDG */ + DO_RTDG + break; + + case 0x3E: /* MIAP */ + case 0x3F: /* MIAP */ + Ins_MIAP( EXEC_ARG_ args ); + break; + + case 0x40: /* NPUSHB */ + Ins_NPUSHB( EXEC_ARG_ args ); + break; + + case 0x41: /* NPUSHW */ + Ins_NPUSHW( EXEC_ARG_ args ); + break; + + case 0x42: /* WS */ + DO_WS + break; + + Set_Invalid_Ref: + CUR.error = TT_Err_Invalid_Reference; + break; + + case 0x43: /* RS */ + DO_RS + break; + + case 0x44: /* WCVTP */ + DO_WCVTP + break; + + case 0x45: /* RCVT */ + DO_RCVT + break; + + case 0x46: /* GC */ + case 0x47: /* GC */ + Ins_GC( EXEC_ARG_ args ); + break; + + case 0x48: /* SCFS */ + Ins_SCFS( EXEC_ARG_ args ); + break; + + case 0x49: /* MD */ + case 0x4A: /* MD */ + Ins_MD( EXEC_ARG_ args ); + break; + + case 0x4B: /* MPPEM */ + DO_MPPEM + break; + + case 0x4C: /* MPS */ + DO_MPS + break; + + case 0x4D: /* FLIPON */ + DO_FLIPON + break; + + case 0x4E: /* FLIPOFF */ + DO_FLIPOFF + break; + + case 0x4F: /* DEBUG */ + DO_DEBUG + break; + + case 0x50: /* LT */ + DO_LT + break; + + case 0x51: /* LTEQ */ + DO_LTEQ + break; + + case 0x52: /* GT */ + DO_GT + break; + + case 0x53: /* GTEQ */ + DO_GTEQ + break; + + case 0x54: /* EQ */ + DO_EQ + break; + + case 0x55: /* NEQ */ + DO_NEQ + break; + + case 0x56: /* ODD */ + DO_ODD + break; + + case 0x57: /* EVEN */ + DO_EVEN + break; + + case 0x58: /* IF */ + Ins_IF( EXEC_ARG_ args ); + break; + + case 0x59: /* EIF */ + /* do nothing */ + break; + + case 0x5A: /* AND */ + DO_AND + break; + + case 0x5B: /* OR */ + DO_OR + break; + + case 0x5C: /* NOT */ + DO_NOT + break; + + case 0x5D: /* DELTAP1 */ + Ins_DELTAP( EXEC_ARG_ args ); + break; + + case 0x5E: /* SDB */ + DO_SDB + break; + + case 0x5F: /* SDS */ + DO_SDS + break; + + case 0x60: /* ADD */ + DO_ADD + break; + + case 0x61: /* SUB */ + DO_SUB + break; + + case 0x62: /* DIV */ + DO_DIV + break; + + case 0x63: /* MUL */ + DO_MUL + break; + + case 0x64: /* ABS */ + DO_ABS + break; + + case 0x65: /* NEG */ + DO_NEG + break; + + case 0x66: /* FLOOR */ + DO_FLOOR + break; + + case 0x67: /* CEILING */ + DO_CEILING + break; + + case 0x68: /* ROUND */ + case 0x69: /* ROUND */ + case 0x6A: /* ROUND */ + case 0x6B: /* ROUND */ + DO_ROUND + break; + + case 0x6C: /* NROUND */ + case 0x6D: /* NROUND */ + case 0x6E: /* NRRUND */ + case 0x6F: /* NROUND */ + DO_NROUND + break; + + case 0x70: /* WCVTF */ + DO_WCVTF + break; + + case 0x71: /* DELTAP2 */ + case 0x72: /* DELTAP3 */ + Ins_DELTAP( EXEC_ARG_ args ); + break; + + case 0x73: /* DELTAC0 */ + case 0x74: /* DELTAC1 */ + case 0x75: /* DELTAC2 */ + Ins_DELTAC( EXEC_ARG_ args ); + break; + + case 0x76: /* SROUND */ + DO_SROUND + break; + + case 0x77: /* S45Round */ + DO_S45ROUND + break; + + case 0x78: /* JROT */ + DO_JROT + break; + + case 0x79: /* JROF */ + DO_JROF + break; + + case 0x7A: /* ROFF */ + DO_ROFF + break; + + case 0x7B: /* ???? */ + Ins_UNKNOWN( EXEC_ARG_ args ); + break; + + case 0x7C: /* RUTG */ + DO_RUTG + break; + + case 0x7D: /* RDTG */ + DO_RDTG + break; + + case 0x7E: /* SANGW */ + case 0x7F: /* AA */ + /* nothing - obsolete */ + break; + + case 0x80: /* FLIPPT */ + Ins_FLIPPT( EXEC_ARG_ args ); + break; + + case 0x81: /* FLIPRGON */ + Ins_FLIPRGON( EXEC_ARG_ args ); + break; + + case 0x82: /* FLIPRGOFF */ + Ins_FLIPRGOFF( EXEC_ARG_ args ); + break; + + case 0x83: /* UNKNOWN */ + case 0x84: /* UNKNOWN */ + Ins_UNKNOWN( EXEC_ARG_ args ); + break; + + case 0x85: /* SCANCTRL */ + Ins_SCANCTRL( EXEC_ARG_ args ); + break; + + case 0x86: /* SDPVTL */ + case 0x87: /* SDPVTL */ + Ins_SDPVTL( EXEC_ARG_ args ); + break; + + case 0x88: /* GETINFO */ + Ins_GETINFO( EXEC_ARG_ args ); + break; + + case 0x89: /* IDEF */ + Ins_IDEF( EXEC_ARG_ args ); + break; + + case 0x8A: /* ROLL */ + Ins_ROLL( EXEC_ARG_ args ); + break; + + case 0x8B: /* MAX */ + DO_MAX + break; + + case 0x8C: /* MIN */ + DO_MIN + break; + + case 0x8D: /* SCANTYPE */ + Ins_SCANTYPE( EXEC_ARG_ args ); + break; + + case 0x8E: /* INSTCTRL */ + Ins_INSTCTRL( EXEC_ARG_ args ); + break; + + case 0x8F: + Ins_UNKNOWN( EXEC_ARG_ args ); + break; + + default: + if ( opcode >= 0xE0 ) + Ins_MIRP( EXEC_ARG_ args ); + else if ( opcode >= 0xC0 ) + Ins_MDRP( EXEC_ARG_ args ); + else if ( opcode >= 0xB8 ) + Ins_PUSHW( EXEC_ARG_ args ); + else if ( opcode >= 0xB0 ) + Ins_PUSHB( EXEC_ARG_ args ); + else + Ins_UNKNOWN( EXEC_ARG_ args ); + } + + } + +#else + + Instruct_Dispatch[CUR.opcode]( EXEC_ARG_ &CUR.stack[CUR.args] ); + +#endif /* TT_CONFIG_OPTION_INTERPRETER_SWITCH */ + + if ( CUR.error != TT_Err_Ok ) + { + switch ( CUR.error ) + { + case TT_Err_Invalid_Opcode: /* looking for redefined instructions */ + { + TT_DefRecord* def = CUR.IDefs; + TT_DefRecord* limit = def + CUR.numIDefs; + + + for ( ; def < limit; def++ ) + { + if ( def->active && CUR.opcode == (FT_Byte)def->opc ) + { + TT_CallRec* callrec; + + + if ( CUR.callTop >= CUR.callSize ) + { + CUR.error = TT_Err_Invalid_Reference; + goto LErrorLabel_; + } + + callrec = &CUR.callStack[CUR.callTop]; + + callrec->Caller_Range = CUR.curRange; + callrec->Caller_IP = CUR.IP + 1; + callrec->Cur_Count = 1; + callrec->Cur_Restart = def->start; + + if ( INS_Goto_CodeRange( def->range, def->start ) == FAILURE ) + goto LErrorLabel_; + + goto LSuiteLabel_; + } + } + } + + CUR.error = TT_Err_Invalid_Opcode; + goto LErrorLabel_; + +#if 0 + break; /* Unreachable code warning suppression. */ + /* Leave to remind in case a later change the editor */ + /* to consider break; */ +#endif + + default: + goto LErrorLabel_; + +#if 0 + break; +#endif + } + } + + CUR.top = CUR.new_top; + + if ( CUR.step_ins ) + CUR.IP += CUR.length; + + /* increment instruction counter and check if we didn't */ + /* run this program for too long (e.g. infinite loops). */ + if ( ++ins_counter > MAX_RUNNABLE_OPCODES ) + return TT_Err_Execution_Too_Long; + + LSuiteLabel_: + if ( CUR.IP >= CUR.codeSize ) + { + if ( CUR.callTop > 0 ) + { + CUR.error = TT_Err_Code_Overflow; + goto LErrorLabel_; + } + else + goto LNo_Error_; + } + } while ( !CUR.instruction_trap ); + + LNo_Error_: + +#ifdef TT_CONFIG_OPTION_STATIC_RASTER + *exc = cur; +#endif + + return TT_Err_Ok; + + LErrorCodeOverflow_: + CUR.error = TT_Err_Code_Overflow; + + LErrorLabel_: + +#ifdef TT_CONFIG_OPTION_STATIC_RASTER + *exc = cur; +#endif + + return CUR.error; + } + + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + +/* END */ diff --git a/src/libs/freetype2/truetype/ttinterp.h b/src/libs/freetype2/truetype/ttinterp.h new file mode 100644 index 0000000000..e750963ff5 --- /dev/null +++ b/src/libs/freetype2/truetype/ttinterp.h @@ -0,0 +1,317 @@ +/***************************************************************************/ +/* */ +/* ttinterp.h */ +/* */ +/* TrueType bytecode interpreter (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __TTINTERP_H__ +#define __TTINTERP_H__ + + +#include +#include "ttobjs.h" + + +FT_BEGIN_HEADER + + +#ifndef TT_CONFIG_OPTION_STATIC_INTEPRETER /* indirect implementation */ + +#define EXEC_OP_ TT_ExecContext exc, +#define EXEC_OP TT_ExecContext exc +#define EXEC_ARG_ exc, +#define EXEC_ARG exc + +#else /* static implementation */ + +#define EXEC_OP_ /* void */ +#define EXEC_OP /* void */ +#define EXEC_ARG_ /* void */ +#define EXEC_ARG /* void */ + +#endif /* TT_CONFIG_OPTION_STATIC_INTERPRETER */ + + + /*************************************************************************/ + /* */ + /* Rounding mode constants. */ + /* */ +#define TT_Round_Off 5 +#define TT_Round_To_Half_Grid 0 +#define TT_Round_To_Grid 1 +#define TT_Round_To_Double_Grid 2 +#define TT_Round_Up_To_Grid 4 +#define TT_Round_Down_To_Grid 3 +#define TT_Round_Super 6 +#define TT_Round_Super_45 7 + + + /*************************************************************************/ + /* */ + /* Function types used by the interpreter, depending on various modes */ + /* (e.g. the rounding mode, whether to render a vertical or horizontal */ + /* line etc). */ + /* */ + /*************************************************************************/ + + /* Rounding function */ + typedef FT_F26Dot6 + (*TT_Round_Func)( EXEC_OP_ FT_F26Dot6 distance, + FT_F26Dot6 compensation ); + + /* Point displacement along the freedom vector routine */ + typedef void + (*TT_Move_Func)( EXEC_OP_ TT_GlyphZone zone, + FT_UShort point, + FT_F26Dot6 distance ); + + /* Distance projection along one of the projection vectors */ + typedef FT_F26Dot6 + (*TT_Project_Func)( EXEC_OP_ FT_Vector* v1, + FT_Vector* v2 ); + + /* reading a cvt value. Take care of non-square pixels if necessary */ + typedef FT_F26Dot6 + (*TT_Get_CVT_Func)( EXEC_OP_ FT_ULong idx ); + + /* setting or moving a cvt value. Take care of non-square pixels */ + /* if necessary */ + typedef void + (*TT_Set_CVT_Func)( EXEC_OP_ FT_ULong idx, + FT_F26Dot6 value ); + + + /*************************************************************************/ + /* */ + /* This structure defines a call record, used to manage function calls. */ + /* */ + typedef struct TT_CallRec_ + { + FT_Int Caller_Range; + FT_Long Caller_IP; + FT_Long Cur_Count; + FT_Long Cur_Restart; + + } TT_CallRec, *TT_CallStack; + + + /*************************************************************************/ + /* */ + /* The main structure for the interpreter which collects all necessary */ + /* variables and states. */ + /* */ + typedef struct TT_ExecContextRec_ + { + TT_Face face; + TT_Size size; + FT_Memory memory; + + /* instructions state */ + + FT_Error error; /* last execution error */ + + FT_Long top; /* top of exec. stack */ + + FT_UInt stackSize; /* size of exec. stack */ + FT_Long* stack; /* current exec. stack */ + + FT_Long args; + FT_UInt new_top; /* new top after exec. */ + + TT_GlyphZoneRec zp0, /* zone records */ + zp1, + zp2, + pts, + twilight; + + FT_Size_Metrics metrics; + TT_Size_Metrics tt_metrics; /* size metrics */ + + TT_GraphicsState GS; /* current graphics state */ + + FT_Int curRange; /* current code range number */ + FT_Byte* code; /* current code range */ + FT_Long IP; /* current instruction pointer */ + FT_Long codeSize; /* size of current range */ + + FT_Byte opcode; /* current opcode */ + FT_Int length; /* length of current opcode */ + + FT_Bool step_ins; /* true if the interpreter must */ + /* increment IP after ins. exec */ + FT_Long cvtSize; + FT_Long* cvt; + + FT_UInt glyphSize; /* glyph instructions buffer size */ + FT_Byte* glyphIns; /* glyph instructions buffer */ + + FT_UInt numFDefs; /* number of function defs */ + FT_UInt maxFDefs; /* maximum number of function defs */ + TT_DefArray FDefs; /* table of FDefs entries */ + + FT_UInt numIDefs; /* number of instruction defs */ + FT_UInt maxIDefs; /* maximum number of ins defs */ + TT_DefArray IDefs; /* table of IDefs entries */ + + FT_UInt maxFunc; /* maximum function index */ + FT_UInt maxIns; /* maximum instruction index */ + + FT_Int callTop, /* top of call stack during execution */ + callSize; /* size of call stack */ + TT_CallStack callStack; /* call stack */ + + FT_UShort maxPoints; /* capacity of this context's `pts' */ + FT_Short maxContours; /* record, expressed in points and */ + /* contours. */ + + TT_CodeRangeTable codeRangeTable; /* table of valid code ranges */ + /* useful for the debugger */ + + FT_UShort storeSize; /* size of current storage */ + FT_Long* storage; /* storage area */ + + FT_F26Dot6 period; /* values used for the */ + FT_F26Dot6 phase; /* `SuperRounding' */ + FT_F26Dot6 threshold; + +#if 0 + /* this seems to be unused */ + FT_Int cur_ppem; /* ppem along the current proj vector */ +#endif + + FT_Bool instruction_trap; /* If `True', the interpreter will */ + /* exit after each instruction */ + + TT_GraphicsState default_GS; /* graphics state resulting from */ + /* the prep program */ + FT_Bool is_composite; /* true if the glyph is composite */ + FT_Bool pedantic_hinting; /* true if pedantic interpretation */ + + /* latest interpreter additions */ + + FT_Long F_dot_P; /* dot product of freedom and projection */ + /* vectors */ + TT_Round_Func func_round; /* current rounding function */ + + TT_Project_Func func_project, /* current projection function */ + func_dualproj, /* current dual proj. function */ + func_freeProj; /* current freedom proj. func */ + + TT_Move_Func func_move; /* current point move function */ + + TT_Get_CVT_Func func_read_cvt; /* read a cvt entry */ + TT_Set_CVT_Func func_write_cvt; /* write a cvt entry (in pixels) */ + TT_Set_CVT_Func func_move_cvt; /* incr a cvt entry (in pixels) */ + + FT_ULong loadSize; + TT_SubGlyph_Stack loadStack; /* loading subglyph stack */ + + } TT_ExecContextRec; + + + extern const TT_GraphicsState tt_default_graphics_state; + + + FT_LOCAL( FT_Error ) + TT_Goto_CodeRange( TT_ExecContext exec, + FT_Int range, + FT_Long IP ); + + FT_LOCAL( FT_Error ) + TT_Set_CodeRange( TT_ExecContext exec, + FT_Int range, + void* base, + FT_Long length ); + + FT_LOCAL( FT_Error ) + TT_Clear_CodeRange( TT_ExecContext exec, + FT_Int range ); + + + /*************************************************************************/ + /* */ + /* */ + /* TT_New_Context */ + /* */ + /* */ + /* Queries the face context for a given font. Note that there is */ + /* now a _single_ execution context in the TrueType driver which is */ + /* shared among faces. */ + /* */ + /* */ + /* face :: A handle to the source face object. */ + /* */ + /* */ + /* A handle to the execution context. Initialized for `face'. */ + /* */ + /* */ + /* Only the glyph loader and debugger should call this function. */ + /* */ + FT_EXPORT( TT_ExecContext ) + TT_New_Context( TT_Face face ); + + + FT_LOCAL( FT_Error ) + TT_Done_Context( TT_ExecContext exec ); + + FT_LOCAL( FT_Error ) + TT_Destroy_Context( TT_ExecContext exec, + FT_Memory memory ); + + FT_LOCAL( FT_Error ) + TT_Load_Context( TT_ExecContext exec, + TT_Face face, + TT_Size size ); + + FT_LOCAL( FT_Error ) + TT_Save_Context( TT_ExecContext exec, + TT_Size ins ); + + FT_LOCAL( FT_Error ) + TT_Run_Context( TT_ExecContext exec, + FT_Bool debug ); + + + /*************************************************************************/ + /* */ + /* */ + /* TT_RunIns */ + /* */ + /* */ + /* Executes one or more instruction in the execution context. This */ + /* is the main function of the TrueType opcode interpreter. */ + /* */ + /* */ + /* exec :: A handle to the target execution context. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only the object manager and debugger should call this function. */ + /* */ + /* This function is publicly exported because it is directly */ + /* invoked by the TrueType debugger. */ + /* */ + FT_EXPORT( FT_Error ) + TT_RunIns( TT_ExecContext exec ); + + +FT_END_HEADER + +#endif /* __TTINTERP_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/truetype/ttobjs.c b/src/libs/freetype2/truetype/ttobjs.c new file mode 100644 index 0000000000..cab9d1bb26 --- /dev/null +++ b/src/libs/freetype2/truetype/ttobjs.c @@ -0,0 +1,844 @@ +/***************************************************************************/ +/* */ +/* ttobjs.c */ +/* */ +/* Objects manager (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_CALC_H +#include FT_INTERNAL_STREAM_H +#include FT_TRUETYPE_IDS_H +#include FT_TRUETYPE_TAGS_H +#include FT_INTERNAL_SFNT_H +#include FT_INTERNAL_POSTSCRIPT_NAMES_H + +#include "ttgload.h" +#include "ttpload.h" + +#include "tterrors.h" + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER +#include "ttinterp.h" +#endif + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_ttobjs + + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + /*************************************************************************/ + /* */ + /* GLYPH ZONE FUNCTIONS */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Done_GlyphZone */ + /* */ + /* */ + /* Deallocates a glyph zone. */ + /* */ + /* */ + /* zone :: A pointer to the target glyph zone. */ + /* */ + FT_LOCAL_DEF( void ) + TT_Done_GlyphZone( TT_GlyphZone zone ) + { + FT_Memory memory = zone->memory; + + + FT_FREE( zone->contours ); + FT_FREE( zone->tags ); + FT_FREE( zone->cur ); + FT_FREE( zone->org ); + + zone->max_points = zone->n_points = 0; + zone->max_contours = zone->n_contours = 0; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_New_GlyphZone */ + /* */ + /* */ + /* Allocates a new glyph zone. */ + /* */ + /* */ + /* memory :: A handle to the current memory object. */ + /* */ + /* maxPoints :: The capacity of glyph zone in points. */ + /* */ + /* maxContours :: The capacity of glyph zone in contours. */ + /* */ + /* */ + /* zone :: A pointer to the target glyph zone record. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_New_GlyphZone( FT_Memory memory, + FT_UShort maxPoints, + FT_Short maxContours, + TT_GlyphZone zone ) + { + FT_Error error; + + + if ( maxPoints > 0 ) + maxPoints += 2; + + FT_MEM_SET( zone, 0, sizeof ( *zone ) ); + zone->memory = memory; + + if ( FT_NEW_ARRAY( zone->org, maxPoints * 2 ) || + FT_NEW_ARRAY( zone->cur, maxPoints * 2 ) || + FT_NEW_ARRAY( zone->tags, maxPoints ) || + FT_NEW_ARRAY( zone->contours, maxContours ) ) + { + TT_Done_GlyphZone( zone ); + } + + return error; + } +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Face_Init */ + /* */ + /* */ + /* Initializes a given TrueType face object. */ + /* */ + /* */ + /* stream :: The source font stream. */ + /* */ + /* face_index :: The index of the font face in the resource. */ + /* */ + /* num_params :: Number of additional generic parameters. Ignored. */ + /* */ + /* params :: Additional generic parameters. Ignored. */ + /* */ + /* */ + /* face :: The newly built face object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Face_Init( FT_Stream stream, + TT_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ) + { + FT_Error error; + FT_Library library; + SFNT_Service sfnt; + + + library = face->root.driver->root.library; + sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" ); + if ( !sfnt ) + goto Bad_Format; + + /* create input stream from resource */ + if ( FT_STREAM_SEEK( 0 ) ) + goto Exit; + + /* check that we have a valid TrueType file */ + error = sfnt->init_face( stream, face, face_index, num_params, params ); + if ( error ) + goto Exit; + + /* We must also be able to accept Mac/GX fonts, as well as OT ones */ + if ( face->format_tag != 0x00010000L && /* MS fonts */ + face->format_tag != TTAG_true ) /* Mac fonts */ + { + FT_TRACE2(( "[not a valid TTF font]\n" )); + goto Bad_Format; + } + + /* If we are performing a simple font format check, exit immediately */ + if ( face_index < 0 ) + return TT_Err_Ok; + + /* Load font directory */ + error = sfnt->load_face( stream, face, face_index, num_params, params ); + if ( error ) + goto Exit; + + if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE ) + error = TT_Load_Locations( face, stream ) || + TT_Load_CVT ( face, stream ) || + TT_Load_Programs ( face, stream ); + + /* initialize standard glyph loading routines */ + TT_Init_Glyph_Loading( face ); + + Exit: + return error; + + Bad_Format: + error = TT_Err_Unknown_File_Format; + goto Exit; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Face_Done */ + /* */ + /* */ + /* Finalizes a given face object. */ + /* */ + /* */ + /* face :: A pointer to the face object to destroy. */ + /* */ + FT_LOCAL_DEF( void ) + TT_Face_Done( TT_Face face ) + { + FT_Memory memory = face->root.memory; + FT_Stream stream = face->root.stream; + + SFNT_Service sfnt = (SFNT_Service)face->sfnt; + + + /* for `extended TrueType formats' (i.e. compressed versions) */ + if ( face->extra.finalizer ) + face->extra.finalizer( face->extra.data ); + + if ( sfnt ) + sfnt->done_face( face ); + + /* freeing the locations table */ + FT_FREE( face->glyph_locations ); + face->num_locations = 0; + + /* freeing the CVT */ + FT_FREE( face->cvt ); + face->cvt_size = 0; + + /* freeing the programs */ + FT_FRAME_RELEASE( face->font_program ); + FT_FRAME_RELEASE( face->cvt_program ); + face->font_program_size = 0; + face->cvt_program_size = 0; + } + + + /*************************************************************************/ + /* */ + /* SIZE FUNCTIONS */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Size_Init */ + /* */ + /* */ + /* Initializes a new TrueType size object. */ + /* */ + /* */ + /* size :: A handle to the size object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Size_Init( TT_Size size ) + { + FT_Error error = TT_Err_Ok; + + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + TT_Face face = (TT_Face)size->root.face; + FT_Memory memory = face->root.memory; + FT_Int i; + + TT_ExecContext exec; + FT_UShort n_twilight; + TT_MaxProfile* maxp = &face->max_profile; + + + size->ttmetrics.valid = FALSE; + + size->max_function_defs = maxp->maxFunctionDefs; + size->max_instruction_defs = maxp->maxInstructionDefs; + + size->num_function_defs = 0; + size->num_instruction_defs = 0; + + size->max_func = 0; + size->max_ins = 0; + + size->cvt_size = face->cvt_size; + size->storage_size = maxp->maxStorage; + + /* Set default metrics */ + { + FT_Size_Metrics* metrics = &size->root.metrics; + TT_Size_Metrics* metrics2 = &size->ttmetrics; + + + metrics->x_ppem = 0; + metrics->y_ppem = 0; + + metrics2->rotated = FALSE; + metrics2->stretched = FALSE; + + /* set default compensation (all 0) */ + for ( i = 0; i < 4; i++ ) + metrics2->compensations[i] = 0; + } + + /* allocate function defs, instruction defs, cvt, and storage area */ + if ( FT_NEW_ARRAY( size->function_defs, size->max_function_defs ) || + FT_NEW_ARRAY( size->instruction_defs, size->max_instruction_defs ) || + FT_NEW_ARRAY( size->cvt, size->cvt_size ) || + FT_NEW_ARRAY( size->storage, size->storage_size ) ) + + goto Fail_Memory; + + /* reserve twilight zone */ + n_twilight = maxp->maxTwilightPoints; + error = TT_New_GlyphZone( memory, n_twilight, 0, &size->twilight ); + if ( error ) + goto Fail_Memory; + + size->twilight.n_points = n_twilight; + + /* set `face->interpreter' according to the debug hook present */ + { + FT_Library library = face->root.driver->root.library; + + + face->interpreter = (TT_Interpreter) + library->debug_hooks[FT_DEBUG_HOOK_TRUETYPE]; + if ( !face->interpreter ) + face->interpreter = (TT_Interpreter)TT_RunIns; + } + + /* Fine, now execute the font program! */ + exec = size->context; + /* size objects used during debugging have their own context */ + if ( !size->debug ) + exec = TT_New_Context( face ); + + if ( !exec ) + { + error = TT_Err_Could_Not_Find_Context; + goto Fail_Memory; + } + + size->GS = tt_default_graphics_state; + TT_Load_Context( exec, face, size ); + + exec->callTop = 0; + exec->top = 0; + + exec->period = 64; + exec->phase = 0; + exec->threshold = 0; + + { + FT_Size_Metrics* metrics = &exec->metrics; + TT_Size_Metrics* tt_metrics = &exec->tt_metrics; + + + metrics->x_ppem = 0; + metrics->y_ppem = 0; + metrics->x_scale = 0; + metrics->y_scale = 0; + + tt_metrics->ppem = 0; + tt_metrics->scale = 0; + tt_metrics->ratio = 0x10000L; + } + + exec->instruction_trap = FALSE; + + exec->cvtSize = size->cvt_size; + exec->cvt = size->cvt; + + exec->F_dot_P = 0x10000L; + + /* allow font program execution */ + TT_Set_CodeRange( exec, + tt_coderange_font, + face->font_program, + face->font_program_size ); + + /* disable CVT and glyph programs coderange */ + TT_Clear_CodeRange( exec, tt_coderange_cvt ); + TT_Clear_CodeRange( exec, tt_coderange_glyph ); + + if ( face->font_program_size > 0 ) + { + error = TT_Goto_CodeRange( exec, tt_coderange_font, 0 ); + if ( !error ) + error = face->interpreter( exec ); + + if ( error ) + goto Fail_Exec; + } + else + error = TT_Err_Ok; + + TT_Save_Context( exec, size ); + + if ( !size->debug ) + TT_Done_Context( exec ); + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + size->ttmetrics.valid = FALSE; + return error; + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + Fail_Exec: + if ( !size->debug ) + TT_Done_Context( exec ); + + Fail_Memory: + + TT_Size_Done( size ); + return error; + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Size_Done */ + /* */ + /* */ + /* The TrueType size object finalizer. */ + /* */ + /* */ + /* size :: A handle to the target size object. */ + /* */ + FT_LOCAL_DEF( void ) + TT_Size_Done( TT_Size size ) + { + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + FT_Memory memory = size->root.face->memory; + + + if ( size->debug ) + { + /* the debug context must be deleted by the debugger itself */ + size->context = NULL; + size->debug = FALSE; + } + + FT_FREE( size->cvt ); + size->cvt_size = 0; + + /* free storage area */ + FT_FREE( size->storage ); + size->storage_size = 0; + + /* twilight zone */ + TT_Done_GlyphZone( &size->twilight ); + + FT_FREE( size->function_defs ); + FT_FREE( size->instruction_defs ); + + size->num_function_defs = 0; + size->max_function_defs = 0; + size->num_instruction_defs = 0; + size->max_instruction_defs = 0; + + size->max_func = 0; + size->max_ins = 0; + +#endif + + size->ttmetrics.valid = FALSE; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Reset_Outline_Size */ + /* */ + /* */ + /* Resets a TrueType outline size when resolutions and character */ + /* dimensions have been changed. */ + /* */ + /* */ + /* size :: A handle to the target size object. */ + /* */ + static FT_Error + Reset_Outline_Size( TT_Size size ) + { + TT_Face face; + FT_Error error = TT_Err_Ok; + + FT_Size_Metrics* metrics; + + + if ( size->ttmetrics.valid ) + return TT_Err_Ok; + + face = (TT_Face)size->root.face; + + metrics = &size->root.metrics; + + if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 ) + return TT_Err_Invalid_PPem; + + /* compute new transformation */ + if ( metrics->x_ppem >= metrics->y_ppem ) + { + size->ttmetrics.scale = metrics->x_scale; + size->ttmetrics.ppem = metrics->x_ppem; + size->ttmetrics.x_ratio = 0x10000L; + size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem, + 0x10000L, + metrics->x_ppem ); + } + else + { + size->ttmetrics.scale = metrics->y_scale; + size->ttmetrics.ppem = metrics->y_ppem; + size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem, + 0x10000L, + metrics->y_ppem ); + size->ttmetrics.y_ratio = 0x10000L; + } + + /* Compute root ascender, descender, test height, and max_advance */ + metrics->ascender = ( FT_MulFix( face->root.ascender, + metrics->y_scale ) + 32 ) & -64; + metrics->descender = ( FT_MulFix( face->root.descender, + metrics->y_scale ) + 32 ) & -64; + metrics->height = ( FT_MulFix( face->root.height, + metrics->y_scale ) + 32 ) & -64; + metrics->max_advance = ( FT_MulFix( face->root.max_advance_width, + metrics->x_scale ) + 32 ) & -64; + +#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS + /* set to `invalid' by default */ + size->strike_index = 0xFFFFU; +#endif + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + { + TT_ExecContext exec; + FT_UInt i, j; + + + /* Scale the cvt values to the new ppem. */ + /* We use by default the y ppem to scale the CVT. */ + for ( i = 0; i < size->cvt_size; i++ ) + size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); + + /* All twilight points are originally zero */ + for ( j = 0; j < (FT_UInt)size->twilight.n_points; j++ ) + { + size->twilight.org[j].x = 0; + size->twilight.org[j].y = 0; + size->twilight.cur[j].x = 0; + size->twilight.cur[j].y = 0; + } + + /* clear storage area */ + for ( i = 0; i < (FT_UInt)size->storage_size; i++ ) + size->storage[i] = 0; + + size->GS = tt_default_graphics_state; + + /* get execution context and run prep program */ + if ( size->debug ) + exec = size->context; + else + exec = TT_New_Context( face ); + /* debugging instances have their own context */ + + if ( !exec ) + return TT_Err_Could_Not_Find_Context; + + TT_Load_Context( exec, face, size ); + + TT_Set_CodeRange( exec, + tt_coderange_cvt, + face->cvt_program, + face->cvt_program_size ); + + TT_Clear_CodeRange( exec, tt_coderange_glyph ); + + exec->instruction_trap = FALSE; + + exec->top = 0; + exec->callTop = 0; + + if ( face->cvt_program_size > 0 ) + { + error = TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 ); + if ( error ) + goto End; + + if ( !size->debug ) + error = face->interpreter( exec ); + } + else + error = TT_Err_Ok; + + size->GS = exec->GS; + /* save default graphics state */ + + End: + TT_Save_Context( exec, size ); + + if ( !size->debug ) + TT_Done_Context( exec ); + /* debugging instances keep their context */ + } + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + if ( !error ) + size->ttmetrics.valid = TRUE; + + return error; + } + + +#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS + + /*************************************************************************/ + /* */ + /* */ + /* Reset_SBit_Size */ + /* */ + /* */ + /* Resets a TrueType sbit size when resolutions and character */ + /* dimensions have been changed. */ + /* */ + /* */ + /* size :: A handle to the target size object. */ + /* */ + static FT_Error + Reset_SBit_Size( TT_Size size ) + { + TT_Face face; + FT_Error error = TT_Err_Ok; + + FT_ULong strike_index; + FT_Size_Metrics* metrics; + FT_Size_Metrics* sbit_metrics; + SFNT_Service sfnt; + + + metrics = &size->root.metrics; + + if ( size->strike_index != 0xFFFFU ) + return TT_Err_Ok; + + face = (TT_Face)size->root.face; + sfnt = (SFNT_Service)face->sfnt; + + sbit_metrics = &size->strike_metrics; + + error = sfnt->set_sbit_strike(face, + metrics->x_ppem, metrics->y_ppem, + &strike_index); + + if ( !error ) + { + TT_SBit_Strike strike = face->sbit_strikes + strike_index; + + + sbit_metrics->x_ppem = metrics->x_ppem; + sbit_metrics->y_ppem = metrics->y_ppem; +#if 0 + /* + * sbit_metrics->?_scale + * are not used now. + */ + sbit_metrics->x_scale = 1 << 16; + sbit_metrics->y_scale = 1 << 16; +#endif + + sbit_metrics->ascender = strike->hori.ascender << 6; + sbit_metrics->descender = strike->hori.descender << 6; + + /* XXX: Is this correct? */ + sbit_metrics->height = sbit_metrics->ascender - + sbit_metrics->descender; + + /* XXX: Is this correct? */ + sbit_metrics->max_advance = ( strike->hori.min_origin_SB + + strike->hori.max_width + + strike->hori.min_advance_SB ) << 6; + + size->strike_index = strike_index; + } + else + { + size->strike_index = 0xFFFFU; + + sbit_metrics->x_ppem = 0; + sbit_metrics->y_ppem = 0; + sbit_metrics->ascender = 0; + sbit_metrics->descender = 0; + sbit_metrics->height = 0; + sbit_metrics->max_advance = 0; + } + + return error; + } + +#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Size_Reset */ + /* */ + /* */ + /* Resets a TrueType size when resolutions and character dimensions */ + /* have been changed. */ + /* */ + /* */ + /* size :: A handle to the target size object. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Size_Reset( TT_Size size ) + { + FT_Face face; + FT_Error error = TT_Err_Ok; + + + face = size->root.face; + + if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) + { + if ( !size->ttmetrics.valid ) + error = Reset_Outline_Size( size ); + + if ( error ) + return error; + } + +#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS + + if ( face->face_flags & FT_FACE_FLAG_FIXED_SIZES ) + { + if ( size->strike_index == 0xFFFFU ) + error = Reset_SBit_Size( size ); + + if ( !error && !( face->face_flags & FT_FACE_FLAG_SCALABLE ) ) + size->root.metrics = size->strike_metrics; + } + +#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ + + if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) + return TT_Err_Ok; + else + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Driver_Init */ + /* */ + /* */ + /* Initializes a given TrueType driver object. */ + /* */ + /* */ + /* driver :: A handle to the target driver object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Driver_Init( TT_Driver driver ) + { + FT_Error error; + + + /* set `extra' in glyph loader */ + error = FT_GlyphLoader_CreateExtra( FT_DRIVER( driver )->glyph_loader ); + + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Driver_Done */ + /* */ + /* */ + /* Finalizes a given TrueType driver. */ + /* */ + /* */ + /* driver :: A handle to the target TrueType driver. */ + /* */ + FT_LOCAL_DEF( void ) + TT_Driver_Done( TT_Driver driver ) + { +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + /* destroy the execution context */ + if ( driver->context ) + { + TT_Destroy_Context( driver->context, driver->root.root.memory ); + driver->context = NULL; + } +#else + FT_UNUSED( driver ); +#endif + + } + + +/* END */ diff --git a/src/libs/freetype2/truetype/ttobjs.h b/src/libs/freetype2/truetype/ttobjs.h new file mode 100644 index 0000000000..4fb48d0410 --- /dev/null +++ b/src/libs/freetype2/truetype/ttobjs.h @@ -0,0 +1,422 @@ +/***************************************************************************/ +/* */ +/* ttobjs.h */ +/* */ +/* Objects manager (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __TTOBJS_H__ +#define __TTOBJS_H__ + + +#include +#include FT_INTERNAL_OBJECTS_H +#include FT_INTERNAL_TRUETYPE_TYPES_H + + +FT_BEGIN_HEADER + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Driver */ + /* */ + /* */ + /* A handle to a TrueType driver object. */ + /* */ + typedef struct TT_DriverRec_* TT_Driver; + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Instance */ + /* */ + /* */ + /* A handle to a TrueType size object. */ + /* */ + typedef struct TT_SizeRec_* TT_Size; + + + /*************************************************************************/ + /* */ + /* */ + /* TT_GlyphSlot */ + /* */ + /* */ + /* A handle to a TrueType glyph slot object. */ + /* */ + /* */ + /* This is a direct typedef of FT_GlyphSlot, as there is nothing */ + /* specific about the TrueType glyph slot. */ + /* */ + typedef FT_GlyphSlot TT_GlyphSlot; + + + /*************************************************************************/ + /* */ + /* */ + /* TT_GraphicsState */ + /* */ + /* */ + /* The TrueType graphics state used during bytecode interpretation. */ + /* */ + typedef struct TT_GraphicsState_ + { + FT_UShort rp0; + FT_UShort rp1; + FT_UShort rp2; + + FT_UnitVector dualVector; + FT_UnitVector projVector; + FT_UnitVector freeVector; + + FT_Long loop; + FT_F26Dot6 minimum_distance; + FT_Int round_state; + + FT_Bool auto_flip; + FT_F26Dot6 control_value_cutin; + FT_F26Dot6 single_width_cutin; + FT_F26Dot6 single_width_value; + FT_Short delta_base; + FT_Short delta_shift; + + FT_Byte instruct_control; + FT_Bool scan_control; + FT_Int scan_type; + + FT_UShort gep0; + FT_UShort gep1; + FT_UShort gep2; + + } TT_GraphicsState; + + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + FT_LOCAL( void ) + TT_Done_GlyphZone( TT_GlyphZone zone ); + + FT_LOCAL( FT_Error ) + TT_New_GlyphZone( FT_Memory memory, + FT_UShort maxPoints, + FT_Short maxContours, + TT_GlyphZone zone ); + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + + + /*************************************************************************/ + /* */ + /* EXECUTION SUBTABLES */ + /* */ + /* These sub-tables relate to instruction execution. */ + /* */ + /*************************************************************************/ + + +#define TT_MAX_CODE_RANGES 3 + + + /*************************************************************************/ + /* */ + /* There can only be 3 active code ranges at once: */ + /* - the Font Program */ + /* - the CVT Program */ + /* - a glyph's instructions set */ + /* */ + typedef enum TT_CodeRange_Tag_ + { + tt_coderange_none = 0, + tt_coderange_font, + tt_coderange_cvt, + tt_coderange_glyph + + } TT_CodeRange_Tag; + + + typedef struct TT_CodeRange_ + { + FT_Byte* base; + FT_ULong size; + + } TT_CodeRange; + + typedef TT_CodeRange TT_CodeRangeTable[TT_MAX_CODE_RANGES]; + + + /*************************************************************************/ + /* */ + /* Defines a function/instruction definition record. */ + /* */ + typedef struct TT_DefRecord_ + { + FT_Int range; /* in which code range is it located? */ + FT_Long start; /* where does it start? */ + FT_UInt opc; /* function #, or instruction code */ + FT_Bool active; /* is it active? */ + + } TT_DefRecord, *TT_DefArray; + + + /*************************************************************************/ + /* */ + /* Subglyph transformation record. */ + /* */ + typedef struct TT_Transform_ + { + FT_Fixed xx, xy; /* transformation matrix coefficients */ + FT_Fixed yx, yy; + FT_F26Dot6 ox, oy; /* offsets */ + + } TT_Transform; + + + /*************************************************************************/ + /* */ + /* Subglyph loading record. Used to load composite components. */ + /* */ + typedef struct TT_SubglyphRec_ + { + FT_Long index; /* subglyph index; initialized with -1 */ + FT_Bool is_scaled; /* is the subglyph scaled? */ + FT_Bool is_hinted; /* should it be hinted? */ + FT_Bool preserve_pps; /* preserve phantom points? */ + + FT_Long file_offset; + + FT_BBox bbox; + FT_Pos left_bearing; + FT_Pos advance; + + TT_GlyphZoneRec zone; + + FT_Long arg1; /* first argument */ + FT_Long arg2; /* second argument */ + + FT_UShort element_flag; /* current load element flag */ + + TT_Transform transform; /* transformation matrix */ + + FT_Vector pp1, pp2; /* phantom points */ + + } TT_SubGlyphRec, *TT_SubGlyph_Stack; + + + /*************************************************************************/ + /* */ + /* A note regarding non-squared pixels: */ + /* */ + /* (This text will probably go into some docs at some time; for now, it */ + /* is kept here to explain some definitions in the TIns_Metrics */ + /* record). */ + /* */ + /* The CVT is a one-dimensional array containing values that control */ + /* certain important characteristics in a font, like the height of all */ + /* capitals, all lowercase letter, default spacing or stem width/height. */ + /* */ + /* These values are found in FUnits in the font file, and must be scaled */ + /* to pixel coordinates before being used by the CVT and glyph programs. */ + /* Unfortunately, when using distinct x and y resolutions (or distinct x */ + /* and y pointsizes), there are two possible scalings. */ + /* */ + /* A first try was to implement a `lazy' scheme where all values were */ + /* scaled when first used. However, while some values are always used */ + /* in the same direction, some others are used under many different */ + /* circumstances and orientations. */ + /* */ + /* I have found a simpler way to do the same, and it even seems to work */ + /* in most of the cases: */ + /* */ + /* - All CVT values are scaled to the maximum ppem size. */ + /* */ + /* - When performing a read or write in the CVT, a ratio factor is used */ + /* to perform adequate scaling. Example: */ + /* */ + /* x_ppem = 14 */ + /* y_ppem = 10 */ + /* */ + /* We choose ppem = x_ppem = 14 as the CVT scaling size. All cvt */ + /* entries are scaled to it. */ + /* */ + /* x_ratio = 1.0 */ + /* y_ratio = y_ppem/ppem (< 1.0) */ + /* */ + /* We compute the current ratio like: */ + /* */ + /* - If projVector is horizontal, */ + /* ratio = x_ratio = 1.0 */ + /* */ + /* - if projVector is vertical, */ + /* ratio = y_ratio */ + /* */ + /* - else, */ + /* ratio = sqrt( (proj.x * x_ratio) ^ 2 + (proj.y * y_ratio) ^ 2 ) */ + /* */ + /* Reading a cvt value returns */ + /* ratio * cvt[index] */ + /* */ + /* Writing a cvt value in pixels: */ + /* cvt[index] / ratio */ + /* */ + /* The current ppem is simply */ + /* ratio * ppem */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* Metrics used by the TrueType size and context objects. */ + /* */ + typedef struct TT_Size_Metrics_ + { + /* for non-square pixels */ + FT_Long x_ratio; + FT_Long y_ratio; + + FT_UShort ppem; /* maximum ppem size */ + FT_Long ratio; /* current ratio */ + FT_Fixed scale; + + FT_F26Dot6 compensations[4]; /* device-specific compensations */ + + FT_Bool valid; + + FT_Bool rotated; /* `is the glyph rotated?'-flag */ + FT_Bool stretched; /* `is the glyph stretched?'-flag */ + + } TT_Size_Metrics; + + + /*************************************************************************/ + /* */ + /* TrueType size class. */ + /* */ + typedef struct TT_SizeRec_ + { + FT_SizeRec root; + + TT_Size_Metrics ttmetrics; + +#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS + + FT_UInt strike_index; /* 0xFFFF to indicate invalid */ + FT_Size_Metrics strike_metrics; /* current strike's metrics */ + +#endif + +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + + FT_UInt num_function_defs; /* number of function definitions */ + FT_UInt max_function_defs; + TT_DefArray function_defs; /* table of function definitions */ + + FT_UInt num_instruction_defs; /* number of ins. definitions */ + FT_UInt max_instruction_defs; + TT_DefArray instruction_defs; /* table of ins. definitions */ + + FT_UInt max_func; + FT_UInt max_ins; + + TT_CodeRangeTable codeRangeTable; + + TT_GraphicsState GS; + + FT_ULong cvt_size; /* the scaled control value table */ + FT_Long* cvt; + + FT_UShort storage_size; /* The storage area is now part of */ + FT_Long* storage; /* the instance */ + + TT_GlyphZoneRec twilight; /* The instance's twilight zone */ + + /* debugging variables */ + + /* When using the debugger, we must keep the */ + /* execution context tied to the instance */ + /* object rather than asking it on demand. */ + + FT_Bool debug; + TT_ExecContext context; + +#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ + + } TT_SizeRec; + + + /*************************************************************************/ + /* */ + /* TrueType driver class. */ + /* */ + typedef struct TT_DriverRec_ + { + FT_DriverRec root; + TT_ExecContext context; /* execution context */ + TT_GlyphZoneRec zone; /* glyph loader points zone */ + + void* extension_component; + + } TT_DriverRec; + + + /*************************************************************************/ + /* */ + /* Face functions */ + /* */ + FT_LOCAL( FT_Error ) + TT_Face_Init( FT_Stream stream, + TT_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ); + + FT_LOCAL( void ) + TT_Face_Done( TT_Face face ); + + + /*************************************************************************/ + /* */ + /* Size functions */ + /* */ + FT_LOCAL( FT_Error ) + TT_Size_Init( TT_Size size ); + + FT_LOCAL( void ) + TT_Size_Done( TT_Size size ); + + FT_LOCAL( FT_Error ) + TT_Size_Reset( TT_Size size ); + + + /*************************************************************************/ + /* */ + /* Driver functions */ + /* */ + FT_LOCAL( FT_Error ) + TT_Driver_Init( TT_Driver driver ); + + FT_LOCAL( void ) + TT_Driver_Done( TT_Driver driver ); + + +FT_END_HEADER + +#endif /* __TTOBJS_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/truetype/ttpload.c b/src/libs/freetype2/truetype/ttpload.c new file mode 100644 index 0000000000..19bd0f87c2 --- /dev/null +++ b/src/libs/freetype2/truetype/ttpload.c @@ -0,0 +1,264 @@ +/***************************************************************************/ +/* */ +/* ttpload.c */ +/* */ +/* TrueType glyph data/program tables loader (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_OBJECTS_H +#include FT_INTERNAL_STREAM_H +#include FT_TRUETYPE_TAGS_H + +#include "ttpload.h" + +#include "tterrors.h" + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_ttpload + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Load_Locations */ + /* */ + /* */ + /* Loads the locations table. */ + /* */ + /* */ + /* face :: A handle to the target face object. */ + /* */ + /* */ + /* stream :: The input stream. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Load_Locations( TT_Face face, + FT_Stream stream ) + { + FT_Error error; + FT_Memory memory = stream->memory; + FT_Short LongOffsets; + FT_ULong table_len; + + + FT_TRACE2(( "Locations " )); + LongOffsets = face->header.Index_To_Loc_Format; + + error = face->goto_table( face, TTAG_loca, stream, &table_len ); + if ( error ) + { + error = TT_Err_Locations_Missing; + goto Exit; + } + + if ( LongOffsets != 0 ) + { + face->num_locations = (FT_UShort)( table_len >> 2 ); + + FT_TRACE2(( "(32bit offsets): %12d ", face->num_locations )); + + if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) ) + goto Exit; + + if ( FT_FRAME_ENTER( face->num_locations * 4L ) ) + goto Exit; + + { + FT_Long* loc = face->glyph_locations; + FT_Long* limit = loc + face->num_locations; + + + for ( ; loc < limit; loc++ ) + *loc = FT_GET_LONG(); + } + + FT_FRAME_EXIT(); + } + else + { + face->num_locations = (FT_UShort)( table_len >> 1 ); + + FT_TRACE2(( "(16bit offsets): %12d ", face->num_locations )); + + if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) ) + goto Exit; + + if ( FT_FRAME_ENTER( face->num_locations * 2L ) ) + goto Exit; + { + FT_Long* loc = face->glyph_locations; + FT_Long* limit = loc + face->num_locations; + + + for ( ; loc < limit; loc++ ) + *loc = (FT_Long)( (FT_ULong)FT_GET_USHORT() * 2 ); + } + FT_FRAME_EXIT(); + } + + FT_TRACE2(( "loaded\n" )); + + Exit: + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Load_CVT */ + /* */ + /* */ + /* Loads the control value table into a face object. */ + /* */ + /* */ + /* face :: A handle to the target face object. */ + /* */ + /* */ + /* stream :: A handle to the input stream. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Load_CVT( TT_Face face, + FT_Stream stream ) + { + FT_Error error; + FT_Memory memory = stream->memory; + FT_ULong table_len; + + + FT_TRACE2(( "CVT " )); + + error = face->goto_table( face, TTAG_cvt, stream, &table_len ); + if ( error ) + { + FT_TRACE2(( "is missing!\n" )); + + face->cvt_size = 0; + face->cvt = NULL; + error = TT_Err_Ok; + + goto Exit; + } + + face->cvt_size = table_len / 2; + + if ( FT_NEW_ARRAY( face->cvt, face->cvt_size ) ) + goto Exit; + + if ( FT_FRAME_ENTER( face->cvt_size * 2L ) ) + goto Exit; + + { + FT_Short* cur = face->cvt; + FT_Short* limit = cur + face->cvt_size; + + + for ( ; cur < limit; cur++ ) + *cur = FT_GET_SHORT(); + } + + FT_FRAME_EXIT(); + FT_TRACE2(( "loaded\n" )); + + Exit: + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Load_Progams */ + /* */ + /* */ + /* Loads the font program and the cvt program. */ + /* */ + /* */ + /* face :: A handle to the target face object. */ + /* */ + /* */ + /* stream :: A handle to the input stream. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + TT_Load_Programs( TT_Face face, + FT_Stream stream ) + { + FT_Error error; + FT_ULong table_len; + + + FT_TRACE2(( "Font program " )); + + /* The font program is optional */ + error = face->goto_table( face, TTAG_fpgm, stream, &table_len ); + if ( error ) + { + face->font_program = NULL; + face->font_program_size = 0; + + FT_TRACE2(( "is missing!\n" )); + } + else + { + face->font_program_size = table_len; + if ( FT_FRAME_EXTRACT( table_len, face->font_program ) ) + goto Exit; + + FT_TRACE2(( "loaded, %12d bytes\n", face->font_program_size )); + } + + FT_TRACE2(( "Prep program " )); + + error = face->goto_table( face, TTAG_prep, stream, &table_len ); + if ( error ) + { + face->cvt_program = NULL; + face->cvt_program_size = 0; + error = TT_Err_Ok; + + FT_TRACE2(( "is missing!\n" )); + } + else + { + face->cvt_program_size = table_len; + if ( FT_FRAME_EXTRACT( table_len, face->cvt_program ) ) + goto Exit; + + FT_TRACE2(( "loaded, %12d bytes\n", face->cvt_program_size )); + } + + Exit: + return error; + } + + +/* END */ diff --git a/src/libs/freetype2/truetype/ttpload.h b/src/libs/freetype2/truetype/ttpload.h new file mode 100644 index 0000000000..c83b2f269a --- /dev/null +++ b/src/libs/freetype2/truetype/ttpload.h @@ -0,0 +1,48 @@ +/***************************************************************************/ +/* */ +/* ttpload.h */ +/* */ +/* TrueType glyph data/program tables loader (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __TTPLOAD_H__ +#define __TTPLOAD_H__ + + +#include +#include FT_INTERNAL_TRUETYPE_TYPES_H + + +FT_BEGIN_HEADER + + + FT_LOCAL( FT_Error ) + TT_Load_Locations( TT_Face face, + FT_Stream stream ); + + FT_LOCAL( FT_Error ) + TT_Load_CVT( TT_Face face, + FT_Stream stream ); + + FT_LOCAL( FT_Error ) + TT_Load_Programs( TT_Face face, + FT_Stream stream ); + + +FT_END_HEADER + +#endif /* __TTPLOAD_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/Jamfile b/src/libs/freetype2/type1/Jamfile new file mode 100644 index 0000000000..1cbb78d4d6 --- /dev/null +++ b/src/libs/freetype2/type1/Jamfile @@ -0,0 +1,23 @@ +# FreeType 2 src/type1 Jamfile (c) 2001 David Turner +# + +SubDir FT2_TOP src type1 ; + +SubDirHdrs [ FT2_SubDir src type1 ] ; + +{ + local _sources ; + + if $(FT2_MULTI) + { + _sources = t1afm t1driver t1objs t1load t1gload t1parse ; + } + else + { + _sources = type1 ; + } + + Library $(FT2_LIB) : $(_sources).c ; +} + +# end of src/type1 Jamfile diff --git a/src/libs/freetype2/type1/descrip.mms b/src/libs/freetype2/type1/descrip.mms new file mode 100644 index 0000000000..8f028f6ff4 --- /dev/null +++ b/src/libs/freetype2/type1/descrip.mms @@ -0,0 +1,23 @@ +# +# FreeType 2 Type1 driver compilation rules for VMS +# + + +# Copyright 1996-2000, 2002 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +CFLAGS=$(COMP_FLAGS)$(DEBUG)/include=([--.include],[--.src.type1]) + +OBJS=type1.obj + +all : $(OBJS) + library [--.lib]freetype.olb $(OBJS) + +# EOF diff --git a/src/libs/freetype2/type1/module.mk b/src/libs/freetype2/type1/module.mk new file mode 100644 index 0000000000..82d9355ba3 --- /dev/null +++ b/src/libs/freetype2/type1/module.mk @@ -0,0 +1,22 @@ +# +# FreeType 2 Type1 module definition +# + + +# Copyright 1996-2000 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +make_module_list: add_type1_driver + +add_type1_driver: + $(OPEN_DRIVER)t1_driver_class$(CLOSE_DRIVER) + $(ECHO_DRIVER)type1 $(ECHO_DRIVER_DESC)Postscript font files with extension *.pfa or *.pfb$(ECHO_DRIVER_DONE) + +# EOF diff --git a/src/libs/freetype2/type1/rules.mk b/src/libs/freetype2/type1/rules.mk new file mode 100644 index 0000000000..49a4e4ad1d --- /dev/null +++ b/src/libs/freetype2/type1/rules.mk @@ -0,0 +1,73 @@ +# +# FreeType 2 Type1 driver configuration rules +# + + +# Copyright 1996-2000, 2001 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +# Type1 driver directory +# +T1_DIR := $(SRC_)type1 +T1_DIR_ := $(T1_DIR)$(SEP) + + +# compilation flags for the driver +# +T1_COMPILE := $(FT_COMPILE) $I$(T1_DIR) + + +# Type1 driver sources (i.e., C files) +# +T1_DRV_SRC := $(T1_DIR_)t1parse.c \ + $(T1_DIR_)t1load.c \ + $(T1_DIR_)t1driver.c \ + $(T1_DIR_)t1afm.c \ + $(T1_DIR_)t1gload.c \ + $(T1_DIR_)t1objs.c + +# Type1 driver headers +# +T1_DRV_H := $(T1_DRV_SRC:%.c=%.h) \ + $(T1_DIR_)t1tokens.h \ + $(T1_DIR_)t1errors.h + + +# Type1 driver object(s) +# +# T1_DRV_OBJ_M is used during `multi' builds +# T1_DRV_OBJ_S is used during `single' builds +# +T1_DRV_OBJ_M := $(T1_DRV_SRC:$(T1_DIR_)%.c=$(OBJ_)%.$O) +T1_DRV_OBJ_S := $(OBJ_)type1.$O + +# Type1 driver source file for single build +# +T1_DRV_SRC_S := $(T1_DIR_)type1.c + + +# Type1 driver - single object +# +$(T1_DRV_OBJ_S): $(T1_DRV_SRC_S) $(T1_DRV_SRC) $(FREETYPE_H) $(T1_DRV_H) + $(T1_COMPILE) $T$@ $(T1_DRV_SRC_S) + + +# Type1 driver - multiple objects +# +$(OBJ_)%.$O: $(T1_DIR_)%.c $(FREETYPE_H) $(T1_DRV_H) + $(T1_COMPILE) $T$@ $< + + +# update main driver object lists +# +DRV_OBJS_S += $(T1_DRV_OBJ_S) +DRV_OBJS_M += $(T1_DRV_OBJ_M) + +# EOF diff --git a/src/libs/freetype2/type1/t1afm.c b/src/libs/freetype2/type1/t1afm.c new file mode 100644 index 0000000000..a8f993f092 --- /dev/null +++ b/src/libs/freetype2/type1/t1afm.c @@ -0,0 +1,282 @@ +/***************************************************************************/ +/* */ +/* t1afm.c */ +/* */ +/* AFM support for Type 1 fonts (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include "t1afm.h" +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_TYPE1_TYPES_H + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1afm + + + FT_LOCAL_DEF( void ) + T1_Done_AFM( FT_Memory memory, + T1_AFM* afm ) + { + FT_FREE( afm->kern_pairs ); + afm->num_pairs = 0; + FT_FREE( afm ); + } + + +#undef IS_KERN_PAIR +#define IS_KERN_PAIR( p ) ( p[0] == 'K' && p[1] == 'P' ) + +#define IS_ALPHANUM( c ) ( ft_isalnum( c ) || \ + c == '_' || \ + c == '.' ) + + + /* read a glyph name and return the equivalent glyph index */ + static FT_UInt + afm_atoindex( FT_Byte** start, + FT_Byte* limit, + T1_Font type1 ) + { + FT_Byte* p = *start; + FT_Int len; + FT_UInt result = 0; + char temp[64]; + + + /* skip whitespace */ + while ( ( *p == ' ' || *p == '\t' || *p == ':' || *p == ';' ) && + p < limit ) + p++; + *start = p; + + /* now, read glyph name */ + while ( IS_ALPHANUM( *p ) && p < limit ) + p++; + + len = (FT_Int)( p - *start ); + + if ( len > 0 && len < 64 ) + { + FT_Int n; + + + /* copy glyph name to intermediate array */ + FT_MEM_COPY( temp, *start, len ); + temp[len] = 0; + + /* lookup glyph name in face array */ + for ( n = 0; n < type1->num_glyphs; n++ ) + { + char* gname = (char*)type1->glyph_names[n]; + + + if ( gname && gname[0] == temp[0] && ft_strcmp( gname, temp ) == 0 ) + { + result = n; + break; + } + } + } + *start = p; + return result; + } + + + /* read an integer */ + static int + afm_atoi( FT_Byte** start, + FT_Byte* limit ) + { + FT_Byte* p = *start; + int sum = 0; + int sign = 1; + + + /* skip everything that is not a number */ + while ( p < limit && !isdigit( *p ) ) + { + sign = 1; + if ( *p == '-' ) + sign = -1; + + p++; + } + + while ( p < limit && isdigit( *p ) ) + { + sum = sum * 10 + ( *p - '0' ); + p++; + } + *start = p; + + return sum * sign; + } + + +#undef KERN_INDEX +#define KERN_INDEX( g1, g2 ) ( ( (FT_ULong)g1 << 16 ) | g2 ) + + + /* compare two kerning pairs */ + FT_CALLBACK_DEF( int ) + compare_kern_pairs( const void* a, + const void* b ) + { + T1_Kern_Pair* pair1 = (T1_Kern_Pair*)a; + T1_Kern_Pair* pair2 = (T1_Kern_Pair*)b; + + FT_ULong index1 = KERN_INDEX( pair1->glyph1, pair1->glyph2 ); + FT_ULong index2 = KERN_INDEX( pair2->glyph1, pair2->glyph2 ); + + + return ( index1 - index2 ); + } + + + /* parse an AFM file -- for now, only read the kerning pairs */ + FT_LOCAL_DEF( FT_Error ) + T1_Read_AFM( FT_Face t1_face, + FT_Stream stream ) + { + FT_Error error; + FT_Memory memory = stream->memory; + FT_Byte* start; + FT_Byte* limit; + FT_Byte* p; + FT_Int count = 0; + T1_Kern_Pair* pair; + T1_Font type1 = &((T1_Face)t1_face)->type1; + T1_AFM* afm = 0; + + + if ( FT_FRAME_ENTER( stream->size ) ) + return error; + + start = (FT_Byte*)stream->cursor; + limit = (FT_Byte*)stream->limit; + p = start; + + /* we are now going to count the occurences of `KP' or `KPX' in */ + /* the AFM file */ + count = 0; + for ( p = start; p < limit - 3; p++ ) + { + if ( IS_KERN_PAIR( p ) ) + count++; + } + + /* Actually, kerning pairs are simply optional! */ + if ( count == 0 ) + goto Exit; + + /* allocate the pairs */ + if ( FT_NEW( afm ) || FT_NEW_ARRAY( afm->kern_pairs, count ) ) + goto Exit; + + /* now, read each kern pair */ + pair = afm->kern_pairs; + afm->num_pairs = count; + + /* save in face object */ + ((T1_Face)t1_face)->afm_data = afm; + + t1_face->face_flags |= FT_FACE_FLAG_KERNING; + + for ( p = start; p < limit - 3; p++ ) + { + if ( IS_KERN_PAIR( p ) ) + { + FT_Byte* q; + + + /* skip keyword (KP or KPX) */ + q = p + 2; + if ( *q == 'X' ) + q++; + + pair->glyph1 = afm_atoindex( &q, limit, type1 ); + pair->glyph2 = afm_atoindex( &q, limit, type1 ); + pair->kerning.x = afm_atoi( &q, limit ); + + pair->kerning.y = 0; + if ( p[2] != 'X' ) + pair->kerning.y = afm_atoi( &q, limit ); + + pair++; + } + } + + /* now, sort the kern pairs according to their glyph indices */ + ft_qsort( afm->kern_pairs, count, sizeof ( T1_Kern_Pair ), + compare_kern_pairs ); + + Exit: + if ( error ) + FT_FREE( afm ); + + FT_FRAME_EXIT(); + + return error; + } + + + /* find the kerning for a given glyph pair */ + FT_LOCAL_DEF( void ) + T1_Get_Kerning( T1_AFM* afm, + FT_UInt glyph1, + FT_UInt glyph2, + FT_Vector* kerning ) + { + T1_Kern_Pair *min, *mid, *max; + FT_ULong idx = KERN_INDEX( glyph1, glyph2 ); + + + /* simple binary search */ + min = afm->kern_pairs; + max = min + afm->num_pairs - 1; + + while ( min <= max ) + { + FT_ULong midi; + + + mid = min + ( max - min ) / 2; + midi = KERN_INDEX( mid->glyph1, mid->glyph2 ); + + if ( midi == idx ) + { + *kerning = mid->kerning; + return; + } + + if ( midi < idx ) + min = mid + 1; + else + max = mid - 1; + } + + kerning->x = 0; + kerning->y = 0; + } + + +/* END */ diff --git a/src/libs/freetype2/type1/t1afm.h b/src/libs/freetype2/type1/t1afm.h new file mode 100644 index 0000000000..77cc6a6e95 --- /dev/null +++ b/src/libs/freetype2/type1/t1afm.h @@ -0,0 +1,66 @@ +/***************************************************************************/ +/* */ +/* t1afm.h */ +/* */ +/* AFM support for Type 1 fonts (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1AFM_H__ +#define __T1AFM_H__ + +#include +#include "t1objs.h" + + +FT_BEGIN_HEADER + + + typedef struct T1_Kern_Pair_ + { + FT_UInt glyph1; + FT_UInt glyph2; + FT_Vector kerning; + + } T1_Kern_Pair; + + + typedef struct T1_AFM_ + { + FT_Int num_pairs; + T1_Kern_Pair* kern_pairs; + + } T1_AFM; + + + FT_LOCAL( FT_Error ) + T1_Read_AFM( FT_Face face, + FT_Stream stream ); + + FT_LOCAL( void ) + T1_Done_AFM( FT_Memory memory, + T1_AFM* afm ); + + FT_LOCAL( void ) + T1_Get_Kerning( T1_AFM* afm, + FT_UInt glyph1, + FT_UInt glyph2, + FT_Vector* kerning ); + + +FT_END_HEADER + +#endif /* __T1AFM_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1driver.c b/src/libs/freetype2/type1/t1driver.c new file mode 100644 index 0000000000..968f767dfd --- /dev/null +++ b/src/libs/freetype2/type1/t1driver.c @@ -0,0 +1,509 @@ +/***************************************************************************/ +/* */ +/* t1driver.c */ +/* */ +/* Type 1 driver interface (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include "t1driver.h" +#include "t1gload.h" +#include "t1load.h" + +#include "t1errors.h" + +#ifndef T1_CONFIG_OPTION_NO_AFM +#include "t1afm.h" +#endif + +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_POSTSCRIPT_NAMES_H + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1driver + + + static FT_Error + t1_get_glyph_name( T1_Face face, + FT_UInt glyph_index, + FT_Pointer buffer, + FT_UInt buffer_max ) + { + FT_String* gname; + + + gname = face->type1.glyph_names[glyph_index]; + + if ( buffer_max > 0 ) + { + FT_UInt len = (FT_UInt)( ft_strlen( gname ) ); + + + if (len >= buffer_max) + len = buffer_max - 1; + + FT_MEM_COPY( buffer, gname, len ); + ((FT_Byte*)buffer)[len] = 0; + } + + return T1_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* t1_get_name_index */ + /* */ + /* */ + /* Uses the Type 1 font's `glyph_names' table to find a given glyph */ + /* name's glyph index. */ + /* */ + /* */ + /* face :: A handle to the source face object. */ + /* */ + /* glyph_name :: The glyph name. */ + /* */ + /* */ + /* Glyph index. 0 means `undefined character code'. */ + /* */ + static FT_UInt + t1_get_name_index( T1_Face face, + FT_String* glyph_name ) + { + FT_Int i; + FT_String* gname; + + + for ( i = 0; i < face->type1.num_glyphs; i++ ) + { + gname = face->type1.glyph_names[i]; + + if ( !ft_strcmp( glyph_name, gname ) ) + return (FT_UInt)i; + } + + return 0; + } + + + static const char* + t1_get_ps_name( T1_Face face ) + { + return (const char*) face->type1.font_name; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Get_Interface */ + /* */ + /* */ + /* Each driver can provide one or more extensions to the base */ + /* FreeType API. These can be used to access format specific */ + /* features (e.g., all TrueType/OpenType resources share a common */ + /* file structure and common tables which can be accessed through the */ + /* `sfnt' interface), or more simply generic ones (e.g., the */ + /* `postscript names' interface which can be used to retrieve the */ + /* PostScript name of a given glyph index). */ + /* */ + /* */ + /* driver :: A handle to a driver object. */ + /* */ + /* */ + /* t1_interface :: A string designing the interface. Examples are */ + /* `sfnt', `post_names', `charmaps', etc. */ + /* */ + /* */ + /* A typeless pointer to the extension's interface (normally a table */ + /* of function pointers). Returns NULL if the requested extension */ + /* isn't available (i.e., wasn't compiled in the driver at build */ + /* time). */ + /* */ + static FT_Module_Interface + Get_Interface( FT_Driver driver, + const FT_String* t1_interface ) + { + FT_UNUSED( driver ); + FT_UNUSED( t1_interface ); + + if ( ft_strcmp( (const char*)t1_interface, "glyph_name" ) == 0 ) + return (FT_Module_Interface)t1_get_glyph_name; + + if ( ft_strcmp( (const char*)t1_interface, "name_index" ) == 0 ) + return (FT_Module_Interface)t1_get_name_index; + + if ( ft_strcmp( (const char*)t1_interface, "postscript_name" ) == 0 ) + return (FT_Module_Interface)t1_get_ps_name; + +#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT + if ( ft_strcmp( (const char*)t1_interface, "get_mm" ) == 0 ) + return (FT_Module_Interface)T1_Get_Multi_Master; + + if ( ft_strcmp( (const char*)t1_interface, "set_mm_design") == 0 ) + return (FT_Module_Interface)T1_Set_MM_Design; + + if ( ft_strcmp( (const char*)t1_interface, "set_mm_blend") == 0 ) + return (FT_Module_Interface)T1_Set_MM_Blend; +#endif + return 0; + } + + +#ifndef T1_CONFIG_OPTION_NO_AFM + + /*************************************************************************/ + /* */ + /* */ + /* Get_Kerning */ + /* */ + /* */ + /* A driver method used to return the kerning vector between two */ + /* glyphs of the same face. */ + /* */ + /* */ + /* face :: A handle to the source face object. */ + /* */ + /* left_glyph :: The index of the left glyph in the kern pair. */ + /* */ + /* right_glyph :: The index of the right glyph in the kern pair. */ + /* */ + /* */ + /* kerning :: The kerning vector. This is in font units for */ + /* scalable formats, and in pixels for fixed-sizes */ + /* formats. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* Only horizontal layouts (left-to-right & right-to-left) are */ + /* supported by this function. Other layouts, or more sophisticated */ + /* kernings are out of scope of this method (the basic driver */ + /* interface is meant to be simple). */ + /* */ + /* They can be implemented by format-specific interfaces. */ + /* */ + static FT_Error + Get_Kerning( T1_Face face, + FT_UInt left_glyph, + FT_UInt right_glyph, + FT_Vector* kerning ) + { + T1_AFM* afm; + + + kerning->x = 0; + kerning->y = 0; + + afm = (T1_AFM*)face->afm_data; + if ( afm ) + T1_Get_Kerning( afm, left_glyph, right_glyph, kerning ); + + return T1_Err_Ok; + } + + +#endif /* T1_CONFIG_OPTION_NO_AFM */ + + + /*************************************************************************/ + /* */ + /* */ + /* Get_Char_Index */ + /* */ + /* */ + /* Uses a charmap to return a given character code's glyph index. */ + /* */ + /* */ + /* charmap :: A handle to the source charmap object. */ + /* */ + /* charcode :: The character code. */ + /* */ + /* */ + /* Glyph index. 0 means `undefined character code'. */ + /* */ + static FT_UInt + Get_Char_Index( FT_CharMap charmap, + FT_Long charcode ) + { + T1_Face face; + FT_UInt result = 0; + PSNames_Service psnames; + + + face = (T1_Face)charmap->face; + psnames = (PSNames_Service)face->psnames; + if ( psnames ) + switch ( charmap->encoding ) + { + /*******************************************************************/ + /* */ + /* Unicode encoding support */ + /* */ + case ft_encoding_unicode: + /* use the `PSNames' module to synthetize the Unicode charmap */ + result = psnames->lookup_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /* the function returns 0xFFFF if the Unicode charcode has */ + /* no corresponding glyph */ + if ( result == 0xFFFFU ) + result = 0; + goto Exit; + + /*******************************************************************/ + /* */ + /* ISOLatin1 encoding support */ + /* */ + case ft_encoding_latin_1: + /* ISOLatin1 is the first page of Unicode */ + if ( charcode < 256 && psnames->unicode_value ) + { + result = psnames->lookup_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /* the function returns 0xFFFF if the Unicode charcode has */ + /* no corresponding glyph */ + if ( result == 0xFFFFU ) + result = 0; + } + goto Exit; + + /*******************************************************************/ + /* */ + /* Custom Type 1 encoding */ + /* */ + case ft_encoding_adobe_custom: + { + T1_Encoding encoding = &face->type1.encoding; + + + if ( charcode >= encoding->code_first && + charcode <= encoding->code_last ) + result = encoding->char_index[charcode]; + goto Exit; + } + + /*******************************************************************/ + /* */ + /* Adobe Standard & Expert encoding support */ + /* */ + default: + if ( charcode < 256 ) + { + FT_UInt code; + FT_Int n; + const char* glyph_name; + + + code = psnames->adobe_std_encoding[charcode]; + if ( charmap->encoding == ft_encoding_adobe_expert ) + code = psnames->adobe_expert_encoding[charcode]; + + glyph_name = psnames->adobe_std_strings( code ); + if ( !glyph_name ) + break; + + for ( n = 0; n < face->type1.num_glyphs; n++ ) + { + const char* gname = face->type1.glyph_names[n]; + + + if ( gname && gname[0] == glyph_name[0] && + ft_strcmp( gname, glyph_name ) == 0 ) + { + result = n; + break; + } + } + } + } + Exit: + return result; + } + + + /*************************************************************************/ + /* */ + /* */ + /* Get_Next_Char */ + /* */ + /* */ + /* Uses a charmap to return the next encoded char. */ + /* */ + /* */ + /* charmap :: A handle to the source charmap object. */ + /* */ + /* charcode :: The character code. */ + /* */ + /* */ + /* Next char code. 0 means `no more char codes'. */ + /* */ + static FT_Long + Get_Next_Char( FT_CharMap charmap, + FT_Long charcode ) + { + T1_Face face; + PSNames_Service psnames; + + + face = (T1_Face)charmap->face; + psnames = (PSNames_Service)face->psnames; + + if ( psnames ) + switch ( charmap->encoding ) + { + /*******************************************************************/ + /* */ + /* Unicode encoding support */ + /* */ + case ft_encoding_unicode: + /* use the `PSNames' module to synthetize the Unicode charmap */ + return psnames->next_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /*******************************************************************/ + /* */ + /* ISOLatin1 encoding support */ + /* */ + case ft_encoding_latin_1: + { + FT_Long code; + + + /* use the `PSNames' module to synthetize the Unicode charmap */ + code = psnames->next_unicode( &face->unicode_map, + (FT_ULong)charcode ); + if ( code < 256 ) + return code; + break; + } + + /*******************************************************************/ + /* */ + /* Custom Type 1 encoding */ + /* */ + case ft_encoding_adobe_custom: + { + T1_Encoding encoding = &face->type1.encoding; + + + charcode++; + if ( charcode < encoding->code_first ) + charcode = encoding->code_first; + while ( charcode <= encoding->code_last ) + { + if ( encoding->char_index[charcode] ) + return charcode; + charcode++; + } + } + + /*******************************************************************/ + /* */ + /* Adobe Standard & Expert encoding support */ + /* */ + default: + while ( ++charcode < 256 ) + { + FT_UInt code; + FT_Int n; + const char* glyph_name; + + + code = psnames->adobe_std_encoding[charcode]; + if ( charmap->encoding == ft_encoding_adobe_expert ) + code = psnames->adobe_expert_encoding[charcode]; + + glyph_name = psnames->adobe_std_strings( code ); + if ( !glyph_name ) + continue; + + for ( n = 0; n < face->type1.num_glyphs; n++ ) + { + const char* gname = face->type1.glyph_names[n]; + + + if ( gname && gname[0] == glyph_name[0] && + ft_strcmp( gname, glyph_name ) == 0 ) + return charcode; + } + } + } + + return 0; + } + + + FT_CALLBACK_TABLE_DEF + const FT_Driver_ClassRec t1_driver_class = + { + { + ft_module_font_driver | + ft_module_driver_scalable | + ft_module_driver_has_hinter, + + sizeof( FT_DriverRec ), + + "type1", + 0x10000L, + 0x20000L, + + 0, /* format interface */ + + (FT_Module_Constructor)T1_Driver_Init, + (FT_Module_Destructor) T1_Driver_Done, + (FT_Module_Requester) Get_Interface, + }, + + sizeof( T1_FaceRec ), + sizeof( T1_SizeRec ), + sizeof( T1_GlyphSlotRec ), + + (FT_Face_InitFunc) T1_Face_Init, + (FT_Face_DoneFunc) T1_Face_Done, + (FT_Size_InitFunc) T1_Size_Init, + (FT_Size_DoneFunc) T1_Size_Done, + (FT_Slot_InitFunc) T1_GlyphSlot_Init, + (FT_Slot_DoneFunc) T1_GlyphSlot_Done, + + (FT_Size_ResetPointsFunc) T1_Size_Reset, + (FT_Size_ResetPixelsFunc) T1_Size_Reset, + (FT_Slot_LoadFunc) T1_Load_Glyph, + (FT_CharMap_CharIndexFunc)Get_Char_Index, + +#ifdef T1_CONFIG_OPTION_NO_AFM + (FT_Face_GetKerningFunc) 0, + (FT_Face_AttachFunc) 0, +#else + (FT_Face_GetKerningFunc) Get_Kerning, + (FT_Face_AttachFunc) T1_Read_AFM, +#endif + (FT_Face_GetAdvancesFunc) 0, + + (FT_CharMap_CharNextFunc) Get_Next_Char + }; + + +/* END */ diff --git a/src/libs/freetype2/type1/t1driver.h b/src/libs/freetype2/type1/t1driver.h new file mode 100644 index 0000000000..ad429440de --- /dev/null +++ b/src/libs/freetype2/type1/t1driver.h @@ -0,0 +1,38 @@ +/***************************************************************************/ +/* */ +/* t1driver.h */ +/* */ +/* High-level Type 1 driver interface (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1DRIVER_H__ +#define __T1DRIVER_H__ + + +#include +#include FT_INTERNAL_DRIVER_H + + +FT_BEGIN_HEADER + + + FT_EXPORT_VAR( const FT_Driver_ClassRec ) t1_driver_class; + + +FT_END_HEADER + +#endif /* __T1DRIVER_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1errors.h b/src/libs/freetype2/type1/t1errors.h new file mode 100644 index 0000000000..81221c343d --- /dev/null +++ b/src/libs/freetype2/type1/t1errors.h @@ -0,0 +1,40 @@ +/***************************************************************************/ +/* */ +/* t1errors.h */ +/* */ +/* Type 1 error codes (specification only). */ +/* */ +/* Copyright 2001 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* This file is used to define the Type 1 error enumeration constants. */ + /* */ + /*************************************************************************/ + +#ifndef __T1ERRORS_H__ +#define __T1ERRORS_H__ + +#include FT_MODULE_ERRORS_H + +#undef __FTERRORS_H__ + +#define FT_ERR_PREFIX T1_Err_ +#define FT_ERR_BASE FT_Mod_Err_Type1 + +#include FT_ERRORS_H + +#endif /* __T1ERRORS_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1gload.c b/src/libs/freetype2/type1/t1gload.c new file mode 100644 index 0000000000..6bf71cfcf6 --- /dev/null +++ b/src/libs/freetype2/type1/t1gload.c @@ -0,0 +1,323 @@ +/***************************************************************************/ +/* */ +/* t1gload.c */ +/* */ +/* Type 1 Glyph Loader (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include "t1gload.h" +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_OUTLINE_H +#include FT_INTERNAL_POSTSCRIPT_AUX_H + +#include "t1errors.h" + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1gload + + + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + /********** *********/ + /********** COMPUTE THE MAXIMUM ADVANCE WIDTH *********/ + /********** *********/ + /********** The following code is in charge of computing *********/ + /********** the maximum advance width of the font. It *********/ + /********** quickly processes each glyph charstring to *********/ + /********** extract the value from either a `sbw' or `seac' *********/ + /********** operator. *********/ + /********** *********/ + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + + + FT_CALLBACK_DEF( FT_Error ) + T1_Parse_Glyph( T1_Decoder decoder, + FT_UInt glyph_index ) + { + T1_Face face = (T1_Face)decoder->builder.face; + T1_Font type1 = &face->type1; + + + decoder->font_matrix = type1->font_matrix; + decoder->font_offset = type1->font_offset; + + return decoder->funcs.parse_charstrings( + decoder, + type1->charstrings [glyph_index], + type1->charstrings_len[glyph_index] ); + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Compute_Max_Advance( T1_Face face, + FT_Int* max_advance ) + { + FT_Error error; + T1_DecoderRec decoder; + FT_Int glyph_index; + T1_Font type1 = &face->type1; + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + *max_advance = 0; + + /* initialize load decoder */ + error = psaux->t1_decoder_funcs->init( &decoder, + (FT_Face)face, + 0, /* size */ + 0, /* glyph slot */ + (FT_Byte**)type1->glyph_names, + face->blend, + 0, + T1_Parse_Glyph ); + if ( error ) + return error; + + decoder.builder.metrics_only = 1; + decoder.builder.load_points = 0; + + decoder.num_subrs = type1->num_subrs; + decoder.subrs = type1->subrs; + decoder.subrs_len = type1->subrs_len; + + *max_advance = 0; + + /* for each glyph, parse the glyph charstring and extract */ + /* the advance width */ + for ( glyph_index = 0; glyph_index < type1->num_glyphs; glyph_index++ ) + { + /* now get load the unscaled outline */ + error = T1_Parse_Glyph( &decoder, glyph_index ); + if ( glyph_index == 0 || decoder.builder.advance.x > *max_advance ) + *max_advance = decoder.builder.advance.x; + + /* ignore the error if one occured - skip to next glyph */ + } + + return T1_Err_Ok; + } + + + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + /********** *********/ + /********** UNHINTED GLYPH LOADER *********/ + /********** *********/ + /********** The following code is in charge of loading a *********/ + /********** single outline. It completely ignores hinting *********/ + /********** and is used when FT_LOAD_NO_HINTING is set. *********/ + /********** *********/ + /********** The Type 1 hinter is located in `t1hint.c' *********/ + /********** *********/ + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + + + FT_LOCAL_DEF( FT_Error ) + T1_Load_Glyph( T1_GlyphSlot glyph, + T1_Size size, + FT_UInt glyph_index, + FT_Int load_flags ) + { + FT_Error error; + T1_DecoderRec decoder; + T1_Face face = (T1_Face)glyph->root.face; + FT_Bool hinting; + T1_Font type1 = &face->type1; + PSAux_Service psaux = (PSAux_Service)face->psaux; + const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; + + FT_Matrix font_matrix; + FT_Vector font_offset; + + + if ( load_flags & FT_LOAD_NO_RECURSE ) + load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; + + glyph->x_scale = size->root.metrics.x_scale; + glyph->y_scale = size->root.metrics.y_scale; + + glyph->root.outline.n_points = 0; + glyph->root.outline.n_contours = 0; + + hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && + ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); + + glyph->root.format = ft_glyph_format_outline; + + error = decoder_funcs->init( &decoder, + (FT_Face)face, + (FT_Size)size, + (FT_GlyphSlot)glyph, + (FT_Byte**)type1->glyph_names, + face->blend, + FT_BOOL( hinting ), + T1_Parse_Glyph ); + if ( error ) + goto Exit; + + decoder.builder.no_recurse = FT_BOOL( + ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); + + decoder.num_subrs = type1->num_subrs; + decoder.subrs = type1->subrs; + decoder.subrs_len = type1->subrs_len; + + + /* now load the unscaled outline */ + error = T1_Parse_Glyph( &decoder, glyph_index ); + if ( error ) + goto Exit; + + font_matrix = decoder.font_matrix; + font_offset = decoder.font_offset; + + /* save new glyph tables */ + decoder_funcs->done( &decoder ); + + /* now, set the metrics -- this is rather simple, as */ + /* the left side bearing is the xMin, and the top side */ + /* bearing the yMax */ + if ( !error ) + { + glyph->root.outline.flags &= ft_outline_owner; + glyph->root.outline.flags |= ft_outline_reverse_fill; + + /* for composite glyphs, return only left side bearing and */ + /* advance width */ + if ( load_flags & FT_LOAD_NO_RECURSE ) + { + FT_Slot_Internal internal = glyph->root.internal; + + + glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x; + glyph->root.metrics.horiAdvance = decoder.builder.advance.x; + internal->glyph_matrix = font_matrix; + internal->glyph_delta = font_offset; + internal->glyph_transformed = 1; + } + else + { + FT_BBox cbox; + FT_Glyph_Metrics* metrics = &glyph->root.metrics; + + + /* copy the _unscaled_ advance width */ + metrics->horiAdvance = decoder.builder.advance.x; + glyph->root.linearHoriAdvance = decoder.builder.advance.x; + glyph->root.internal->glyph_transformed = 0; + + /* make up vertical metrics */ + metrics->vertBearingX = 0; + metrics->vertBearingY = 0; + metrics->vertAdvance = 0; + + glyph->root.linearVertAdvance = 0; + + glyph->root.format = ft_glyph_format_outline; + + if ( size && size->root.metrics.y_ppem < 24 ) + glyph->root.outline.flags |= ft_outline_high_precision; + +#if 1 + /* apply the font matrix, if any */ + FT_Outline_Transform( &glyph->root.outline, &font_matrix ); + + FT_Outline_Translate( &glyph->root.outline, + font_offset.x, + font_offset.y ); +#endif + + if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) + { + /* scale the outline and the metrics */ + FT_Int n; + FT_Outline* cur = decoder.builder.base; + FT_Vector* vec = cur->points; + FT_Fixed x_scale = glyph->x_scale; + FT_Fixed y_scale = glyph->y_scale; + + + /* First of all, scale the points, if we are not hinting */ + if ( !hinting ) + for ( n = cur->n_points; n > 0; n--, vec++ ) + { + vec->x = FT_MulFix( vec->x, x_scale ); + vec->y = FT_MulFix( vec->y, y_scale ); + } + + FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); + + /* Then scale the metrics */ + metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); + metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); + + metrics->vertBearingX = FT_MulFix( metrics->vertBearingX, x_scale ); + metrics->vertBearingY = FT_MulFix( metrics->vertBearingY, y_scale ); + + if ( hinting ) + { + metrics->horiAdvance = ( metrics->horiAdvance + 32 ) & -64; + metrics->vertAdvance = ( metrics->vertAdvance + 32 ) & -64; + + metrics->vertBearingX = ( metrics->vertBearingX + 32 ) & -64; + metrics->vertBearingY = ( metrics->vertBearingY + 32 ) & -64; + } + } + + /* compute the other metrics */ + FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); + + /* grid fit the bounding box if necessary */ + if ( hinting ) + { + cbox.xMin &= -64; + cbox.yMin &= -64; + cbox.xMax = ( cbox.xMax+63 ) & -64; + cbox.yMax = ( cbox.yMax+63 ) & -64; + } + + metrics->width = cbox.xMax - cbox.xMin; + metrics->height = cbox.yMax - cbox.yMin; + + metrics->horiBearingX = cbox.xMin; + metrics->horiBearingY = cbox.yMax; + } + + /* Set control data to the glyph charstrings. Note that this is */ + /* _not_ zero-terminated. */ + glyph->root.control_data = type1->charstrings [glyph_index]; + glyph->root.control_len = type1->charstrings_len[glyph_index]; + } + + Exit: + return error; + } + + +/* END */ diff --git a/src/libs/freetype2/type1/t1gload.h b/src/libs/freetype2/type1/t1gload.h new file mode 100644 index 0000000000..4b7ba5d62d --- /dev/null +++ b/src/libs/freetype2/type1/t1gload.h @@ -0,0 +1,46 @@ +/***************************************************************************/ +/* */ +/* t1gload.h */ +/* */ +/* Type 1 Glyph Loader (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1GLOAD_H__ +#define __T1GLOAD_H__ + + +#include +#include "t1objs.h" + + +FT_BEGIN_HEADER + + + FT_LOCAL( FT_Error ) + T1_Compute_Max_Advance( T1_Face face, + FT_Int* max_advance ); + + FT_LOCAL( FT_Error ) + T1_Load_Glyph( T1_GlyphSlot glyph, + T1_Size size, + FT_UInt glyph_index, + FT_Int load_flags ); + + +FT_END_HEADER + +#endif /* __T1GLOAD_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1load.c b/src/libs/freetype2/type1/t1load.c new file mode 100644 index 0000000000..d2f810d942 --- /dev/null +++ b/src/libs/freetype2/type1/t1load.c @@ -0,0 +1,1764 @@ +/***************************************************************************/ +/* */ +/* t1load.c */ +/* */ +/* Type 1 font loader (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* This is the new and improved Type 1 data loader for FreeType 2. The */ + /* old loader has several problems: it is slow, complex, difficult to */ + /* maintain, and contains incredible hacks to make it accept some */ + /* ill-formed Type 1 fonts without hiccup-ing. Moreover, about 5% of */ + /* the Type 1 fonts on my machine still aren't loaded correctly by it. */ + /* */ + /* This version is much simpler, much faster and also easier to read and */ + /* maintain by a great order of magnitude. The idea behind it is to */ + /* _not_ try to read the Type 1 token stream with a state machine (i.e. */ + /* a Postscript-like interpreter) but rather to perform simple pattern */ + /* matching. */ + /* */ + /* Indeed, nearly all data definitions follow a simple pattern like */ + /* */ + /* ... /Field ... */ + /* */ + /* where can be a number, a boolean, a string, or an array of */ + /* numbers. There are a few exceptions, namely the encoding, font name, */ + /* charstrings, and subrs; they are handled with a special pattern */ + /* matching routine. */ + /* */ + /* All other common cases are handled very simply. The matching rules */ + /* are defined in the file `t1tokens.h' through the use of several */ + /* macros calls PARSE_XXX. */ + /* */ + /* This file is included twice here; the first time to generate parsing */ + /* callback functions, the second to generate a table of keywords (with */ + /* pointers to the associated callback). */ + /* */ + /* The function `parse_dict' simply scans *linearly* a given dictionary */ + /* (either the top-level or private one) and calls the appropriate */ + /* callback when it encounters an immediate keyword. */ + /* */ + /* This is by far the fastest way one can find to parse and read all */ + /* data. */ + /* */ + /* This led to tremendous code size reduction. Note that later, the */ + /* glyph loader will also be _greatly_ simplified, and the automatic */ + /* hinter will replace the clumsy `t1hinter'. */ + /* */ + /*************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_CONFIG_CONFIG_H +#include FT_MULTIPLE_MASTERS_H +#include FT_INTERNAL_TYPE1_TYPES_H + +#include "t1load.h" +#include "t1errors.h" + + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1load + + +#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT + + + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** MULTIPLE MASTERS SUPPORT *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + + static FT_Error + t1_allocate_blend( T1_Face face, + FT_UInt num_designs, + FT_UInt num_axis ) + { + PS_Blend blend; + FT_Memory memory = face->root.memory; + FT_Error error = 0; + + + blend = face->blend; + if ( !blend ) + { + if ( FT_NEW( blend ) ) + goto Exit; + + face->blend = blend; + } + + /* allocate design data if needed */ + if ( num_designs > 0 ) + { + if ( blend->num_designs == 0 ) + { + FT_UInt nn; + + + /* allocate the blend `private' and `font_info' dictionaries */ + if ( FT_NEW_ARRAY( blend->font_infos[1], num_designs ) || + FT_NEW_ARRAY( blend->privates[1], num_designs ) || + FT_NEW_ARRAY( blend->weight_vector, num_designs * 2 ) ) + goto Exit; + + blend->default_weight_vector = blend->weight_vector + num_designs; + + blend->font_infos[0] = &face->type1.font_info; + blend->privates [0] = &face->type1.private_dict; + + for ( nn = 2; nn <= num_designs; nn++ ) + { + blend->privates[nn] = blend->privates [nn - 1] + 1; + blend->font_infos[nn] = blend->font_infos[nn - 1] + 1; + } + + blend->num_designs = num_designs; + } + else if ( blend->num_designs != num_designs ) + goto Fail; + } + + /* allocate axis data if needed */ + if ( num_axis > 0 ) + { + if ( blend->num_axis != 0 && blend->num_axis != num_axis ) + goto Fail; + + blend->num_axis = num_axis; + } + + /* allocate the blend design pos table if needed */ + num_designs = blend->num_designs; + num_axis = blend->num_axis; + if ( num_designs && num_axis && blend->design_pos[0] == 0 ) + { + FT_UInt n; + + + if ( FT_NEW_ARRAY( blend->design_pos[0], num_designs * num_axis ) ) + goto Exit; + + for ( n = 1; n < num_designs; n++ ) + blend->design_pos[n] = blend->design_pos[0] + num_axis * n; + } + + Exit: + return error; + + Fail: + error = -1; + goto Exit; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Get_Multi_Master( T1_Face face, + FT_Multi_Master* master ) + { + PS_Blend blend = face->blend; + FT_UInt n; + FT_Error error; + + + error = T1_Err_Invalid_Argument; + + if ( blend ) + { + master->num_axis = blend->num_axis; + master->num_designs = blend->num_designs; + + for ( n = 0; n < blend->num_axis; n++ ) + { + FT_MM_Axis* axis = master->axis + n; + PS_DesignMap map = blend->design_map + n; + + + axis->name = blend->axis_names[n]; + axis->minimum = map->design_points[0]; + axis->maximum = map->design_points[map->num_points - 1]; + } + error = 0; + } + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Set_MM_Blend( T1_Face face, + FT_UInt num_coords, + FT_Fixed* coords ) + { + PS_Blend blend = face->blend; + FT_Error error; + FT_UInt n, m; + + + error = T1_Err_Invalid_Argument; + + if ( blend && blend->num_axis == num_coords ) + { + /* recompute the weight vector from the blend coordinates */ + error = T1_Err_Ok; + + for ( n = 0; n < blend->num_designs; n++ ) + { + FT_Fixed result = 0x10000L; /* 1.0 fixed */ + + + for ( m = 0; m < blend->num_axis; m++ ) + { + FT_Fixed factor; + + + /* get current blend axis position */ + factor = coords[m]; + if ( factor < 0 ) factor = 0; + if ( factor > 0x10000L ) factor = 0x10000L; + + if ( ( n & ( 1 << m ) ) == 0 ) + factor = 0x10000L - factor; + + result = FT_MulFix( result, factor ); + } + blend->weight_vector[n] = result; + } + + error = T1_Err_Ok; + } + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Set_MM_Design( T1_Face face, + FT_UInt num_coords, + FT_Long* coords ) + { + PS_Blend blend = face->blend; + FT_Error error; + FT_UInt n, p; + + + error = T1_Err_Invalid_Argument; + if ( blend && blend->num_axis == num_coords ) + { + /* compute the blend coordinates through the blend design map */ + FT_Fixed final_blends[T1_MAX_MM_DESIGNS]; + + + for ( n = 0; n < blend->num_axis; n++ ) + { + FT_Long design = coords[n]; + FT_Fixed the_blend; + PS_DesignMap map = blend->design_map + n; + FT_Fixed* designs = map->design_points; + FT_Fixed* blends = map->blend_points; + FT_Int before = -1, after = -1; + + + for ( p = 0; p < (FT_UInt)map->num_points; p++ ) + { + FT_Fixed p_design = designs[p]; + + + /* exact match ? */ + if ( design == p_design ) + { + the_blend = blends[p]; + goto Found; + } + + if ( design < p_design ) + { + after = p; + break; + } + + before = p; + } + + /* now, interpolate if needed */ + if ( before < 0 ) + the_blend = blends[0]; + + else if ( after < 0 ) + the_blend = blends[map->num_points - 1]; + + else + the_blend = FT_MulDiv( design - designs[before], + blends [after] - blends [before], + designs[after] - designs[before] ); + + Found: + final_blends[n] = the_blend; + } + + error = T1_Set_MM_Blend( face, num_coords, final_blends ); + } + + return error; + } + + + FT_LOCAL_DEF( void ) + T1_Done_Blend( T1_Face face ) + { + FT_Memory memory = face->root.memory; + PS_Blend blend = face->blend; + + + if ( blend ) + { + FT_UInt num_designs = blend->num_designs; + FT_UInt num_axis = blend->num_axis; + FT_UInt n; + + + /* release design pos table */ + FT_FREE( blend->design_pos[0] ); + for ( n = 1; n < num_designs; n++ ) + blend->design_pos[n] = 0; + + /* release blend `private' and `font info' dictionaries */ + FT_FREE( blend->privates[1] ); + FT_FREE( blend->font_infos[1] ); + + for ( n = 0; n < num_designs; n++ ) + { + blend->privates [n] = 0; + blend->font_infos[n] = 0; + } + + /* release weight vectors */ + FT_FREE( blend->weight_vector ); + blend->default_weight_vector = 0; + + /* release axis names */ + for ( n = 0; n < num_axis; n++ ) + FT_FREE( blend->axis_names[n] ); + + /* release design map */ + for ( n = 0; n < num_axis; n++ ) + { + PS_DesignMap dmap = blend->design_map + n; + + + FT_FREE( dmap->design_points ); + dmap->num_points = 0; + } + + FT_FREE( face->blend ); + } + } + + + static void + parse_blend_axis_types( T1_Face face, + T1_Loader loader ) + { + T1_TokenRec axis_tokens[ T1_MAX_MM_AXIS ]; + FT_Int n, num_axis; + FT_Error error = 0; + PS_Blend blend; + FT_Memory memory; + + + /* take an array of objects */ + T1_ToTokenArray( &loader->parser, axis_tokens, + T1_MAX_MM_AXIS, &num_axis ); + if ( num_axis <= 0 || num_axis > T1_MAX_MM_AXIS ) + { + FT_ERROR(( "parse_blend_axis_types: incorrect number of axes: %d\n", + num_axis )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + /* allocate blend if necessary */ + error = t1_allocate_blend( face, 0, (FT_UInt)num_axis ); + if ( error ) + goto Exit; + + blend = face->blend; + memory = face->root.memory; + + /* each token is an immediate containing the name of the axis */ + for ( n = 0; n < num_axis; n++ ) + { + T1_Token token = axis_tokens + n; + FT_Byte* name; + FT_Int len; + + + /* skip first slash, if any */ + if ( token->start[0] == '/' ) + token->start++; + + len = (FT_Int)( token->limit - token->start ); + if ( len <= 0 ) + { + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + if ( FT_ALLOC( blend->axis_names[n], len + 1 ) ) + goto Exit; + + name = (FT_Byte*)blend->axis_names[n]; + FT_MEM_COPY( name, token->start, len ); + name[len] = 0; + } + + Exit: + loader->parser.root.error = error; + } + + + static void + parse_blend_design_positions( T1_Face face, + T1_Loader loader ) + { + T1_TokenRec design_tokens[ T1_MAX_MM_DESIGNS ]; + FT_Int num_designs; + FT_Int num_axis; + T1_Parser parser = &loader->parser; + + FT_Error error = 0; + PS_Blend blend; + + + /* get the array of design tokens - compute number of designs */ + T1_ToTokenArray( parser, design_tokens, T1_MAX_MM_DESIGNS, &num_designs ); + if ( num_designs <= 0 || num_designs > T1_MAX_MM_DESIGNS ) + { + FT_ERROR(( "parse_blend_design_positions:" )); + FT_ERROR(( " incorrect number of designs: %d\n", + num_designs )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + { + FT_Byte* old_cursor = parser->root.cursor; + FT_Byte* old_limit = parser->root.limit; + FT_UInt n; + + + blend = face->blend; + num_axis = 0; /* make compiler happy */ + + for ( n = 0; n < (FT_UInt)num_designs; n++ ) + { + T1_TokenRec axis_tokens[ T1_MAX_MM_DESIGNS ]; + T1_Token token; + FT_Int axis, n_axis; + + + /* read axis/coordinates tokens */ + token = design_tokens + n; + parser->root.cursor = token->start - 1; + parser->root.limit = token->limit + 1; + T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &n_axis ); + + if ( n == 0 ) + { + num_axis = n_axis; + error = t1_allocate_blend( face, num_designs, num_axis ); + if ( error ) + goto Exit; + blend = face->blend; + } + else if ( n_axis != num_axis ) + { + FT_ERROR(( "parse_blend_design_positions: incorrect table\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + /* now, read each axis token into the design position */ + for ( axis = 0; axis < n_axis; axis++ ) + { + T1_Token token2 = axis_tokens + axis; + + + parser->root.cursor = token2->start; + parser->root.limit = token2->limit; + blend->design_pos[n][axis] = T1_ToFixed( parser, 0 ); + } + } + + loader->parser.root.cursor = old_cursor; + loader->parser.root.limit = old_limit; + } + + Exit: + loader->parser.root.error = error; + } + + + static void + parse_blend_design_map( T1_Face face, + T1_Loader loader ) + { + FT_Error error = 0; + T1_Parser parser = &loader->parser; + PS_Blend blend; + T1_TokenRec axis_tokens[T1_MAX_MM_AXIS]; + FT_Int n, num_axis; + FT_Byte* old_cursor; + FT_Byte* old_limit; + FT_Memory memory = face->root.memory; + + + T1_ToTokenArray( parser, axis_tokens, T1_MAX_MM_AXIS, &num_axis ); + if ( num_axis <= 0 || num_axis > T1_MAX_MM_AXIS ) + { + FT_ERROR(( "parse_blend_design_map: incorrect number of axes: %d\n", + num_axis )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + old_cursor = parser->root.cursor; + old_limit = parser->root.limit; + + error = t1_allocate_blend( face, 0, num_axis ); + if ( error ) + goto Exit; + blend = face->blend; + + /* now, read each axis design map */ + for ( n = 0; n < num_axis; n++ ) + { + PS_DesignMap map = blend->design_map + n; + T1_Token token; + FT_Int p, num_points; + + + token = axis_tokens + n; + parser->root.cursor = token->start; + parser->root.limit = token->limit; + + /* count the number of map points */ + { + FT_Byte* ptr = token->start; + FT_Byte* limit = token->limit; + + + num_points = 0; + for ( ; ptr < limit; ptr++ ) + if ( ptr[0] == '[' ) + num_points++; + } + if ( num_points <= 0 || num_points > T1_MAX_MM_MAP_POINTS ) + { + FT_ERROR(( "parse_blend_design_map: incorrect table\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + /* allocate design map data */ + if ( FT_NEW_ARRAY( map->design_points, num_points * 2 ) ) + goto Exit; + map->blend_points = map->design_points + num_points; + map->num_points = (FT_Byte)num_points; + + for ( p = 0; p < num_points; p++ ) + { + map->design_points[p] = T1_ToInt( parser ); + map->blend_points [p] = T1_ToFixed( parser, 0 ); + } + } + + parser->root.cursor = old_cursor; + parser->root.limit = old_limit; + + Exit: + parser->root.error = error; + } + + + static void + parse_weight_vector( T1_Face face, + T1_Loader loader ) + { + FT_Error error = 0; + T1_Parser parser = &loader->parser; + PS_Blend blend = face->blend; + T1_TokenRec master; + FT_UInt n; + FT_Byte* old_cursor; + FT_Byte* old_limit; + + + if ( !blend || blend->num_designs == 0 ) + { + FT_ERROR(( "parse_weight_vector: too early!\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + T1_ToToken( parser, &master ); + if ( master.type != T1_TOKEN_TYPE_ARRAY ) + { + FT_ERROR(( "parse_weight_vector: incorrect format!\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + old_cursor = parser->root.cursor; + old_limit = parser->root.limit; + + parser->root.cursor = master.start; + parser->root.limit = master.limit; + + for ( n = 0; n < blend->num_designs; n++ ) + { + blend->default_weight_vector[n] = + blend->weight_vector[n] = T1_ToFixed( parser, 0 ); + } + + parser->root.cursor = old_cursor; + parser->root.limit = old_limit; + + Exit: + parser->root.error = error; + } + + + /* the keyword `/shareddict' appears in some multiple master fonts */ + /* with a lot of Postscript garbage behind it (that's completely out */ + /* of spec!); we detect it and terminate the parsing */ + /* */ + static void + parse_shared_dict( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + + FT_UNUSED( face ); + + + parser->root.cursor = parser->root.limit; + parser->root.error = 0; + } + +#endif /* T1_CONFIG_OPTION_NO_MM_SUPPORT */ + + + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** TYPE 1 SYMBOL PARSING *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* First of all, define the token field static variables. This is a set */ + /* of T1_FieldRec variables used later. */ + /* */ + /*************************************************************************/ + + + static FT_Error + t1_load_keyword( T1_Face face, + T1_Loader loader, + T1_Field field ) + { + FT_Error error; + void* dummy_object; + void** objects; + FT_UInt max_objects; + PS_Blend blend = face->blend; + + + /* if the keyword has a dedicated callback, call it */ + if ( field->type == T1_FIELD_TYPE_CALLBACK ) + { + field->reader( (FT_Face)face, loader ); + error = loader->parser.root.error; + goto Exit; + } + + /* now, the keyword is either a simple field, or a table of fields; */ + /* we are now going to take care of it */ + switch ( field->location ) + { + case T1_FIELD_LOCATION_FONT_INFO: + dummy_object = &face->type1.font_info; + objects = &dummy_object; + max_objects = 0; + + if ( blend ) + { + objects = (void**)blend->font_infos; + max_objects = blend->num_designs; + } + break; + + case T1_FIELD_LOCATION_PRIVATE: + dummy_object = &face->type1.private_dict; + objects = &dummy_object; + max_objects = 0; + + if ( blend ) + { + objects = (void**)blend->privates; + max_objects = blend->num_designs; + } + break; + + default: + dummy_object = &face->type1; + objects = &dummy_object; + max_objects = 0; + } + + if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY || + field->type == T1_FIELD_TYPE_FIXED_ARRAY ) + error = T1_Load_Field_Table( &loader->parser, field, + objects, max_objects, 0 ); + else + error = T1_Load_Field( &loader->parser, field, + objects, max_objects, 0 ); + + Exit: + return error; + } + + + static int + is_space( FT_Byte c ) + { + return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' ); + } + + + static int + is_alpha( FT_Byte c ) + { + /* Note: we must accept "+" as a valid character, as it is used in */ + /* embedded type1 fonts in PDF documents. */ + /* */ + return ( ft_isalnum( c ) || + c == '.' || + c == '_' || + c == '-' || + c == '+' ); + } + + + static int + read_binary_data( T1_Parser parser, + FT_Int* size, + FT_Byte** base ) + { + FT_Byte* cur; + FT_Byte* limit = parser->root.limit; + + + /* the binary data has the following format */ + /* */ + /* `size' [white*] RD white ....... ND */ + /* */ + + T1_Skip_Spaces( parser ); + cur = parser->root.cursor; + + if ( cur < limit && (FT_Byte)( *cur - '0' ) < 10 ) + { + *size = T1_ToInt( parser ); + + T1_Skip_Spaces( parser ); + T1_Skip_Alpha ( parser ); /* `RD' or `-|' or something else */ + + /* there is only one whitespace char after the */ + /* `RD' or `-|' token */ + *base = parser->root.cursor + 1; + + parser->root.cursor += *size + 1; + return 1; + } + + FT_ERROR(( "read_binary_data: invalid size field\n" )); + parser->root.error = T1_Err_Invalid_File_Format; + return 0; + } + + + /* we will now define the routines used to handle */ + /* the `/Encoding', `/Subrs', and `/CharStrings' */ + /* dictionaries */ + + static void + parse_font_name( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + FT_Error error; + FT_Memory memory = parser->root.memory; + FT_Int len; + FT_Byte* cur; + FT_Byte* cur2; + FT_Byte* limit; + + + if ( face->type1.font_name ) + /* with synthetic fonts, it's possible we get here twice */ + return; + + T1_Skip_Spaces( parser ); + + cur = parser->root.cursor; + limit = parser->root.limit; + + if ( cur >= limit - 1 || *cur != '/' ) + return; + + cur++; + cur2 = cur; + while ( cur2 < limit && is_alpha( *cur2 ) ) + cur2++; + + len = (FT_Int)( cur2 - cur ); + if ( len > 0 ) + { + if ( FT_ALLOC( face->type1.font_name, len + 1 ) ) + { + parser->root.error = error; + return; + } + + FT_MEM_COPY( face->type1.font_name, cur, len ); + face->type1.font_name[len] = '\0'; + } + parser->root.cursor = cur2; + } + + + static void + parse_font_bbox( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + FT_Fixed temp[4]; + FT_BBox* bbox = &face->type1.font_bbox; + + + (void)T1_ToFixedArray( parser, 4, temp, 0 ); + bbox->xMin = FT_RoundFix( temp[0] ); + bbox->yMin = FT_RoundFix( temp[1] ); + bbox->xMax = FT_RoundFix( temp[2] ); + bbox->yMax = FT_RoundFix( temp[3] ); + } + + + static void + parse_font_matrix( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + FT_Matrix* matrix = &face->type1.font_matrix; + FT_Vector* offset = &face->type1.font_offset; + FT_Face root = (FT_Face)&face->root; + FT_Fixed temp[6]; + FT_Fixed temp_scale; + + + if ( matrix->xx || matrix->yx ) + /* with synthetic fonts, it's possible we get here twice */ + return; + + (void)T1_ToFixedArray( parser, 6, temp, 3 ); + + temp_scale = ABS( temp[3] ); + + /* Set Units per EM based on FontMatrix values. We set the value to */ + /* 1000 / temp_scale, because temp_scale was already multiplied by */ + /* 1000 (in t1_tofixed, from psobjs.c). */ + + root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L, + temp_scale ) >> 16 ); + + /* we need to scale the values by 1.0/temp_scale */ + if ( temp_scale != 0x10000L ) + { + temp[0] = FT_DivFix( temp[0], temp_scale ); + temp[1] = FT_DivFix( temp[1], temp_scale ); + temp[2] = FT_DivFix( temp[2], temp_scale ); + temp[4] = FT_DivFix( temp[4], temp_scale ); + temp[5] = FT_DivFix( temp[5], temp_scale ); + temp[3] = 0x10000L; + } + + matrix->xx = temp[0]; + matrix->yx = temp[1]; + matrix->xy = temp[2]; + matrix->yy = temp[3]; + + /* note that the offsets must be expressed in integer font units */ + offset->x = temp[4] >> 16; + offset->y = temp[5] >> 16; + } + + + static void + parse_encoding( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + FT_Byte* cur = parser->root.cursor; + FT_Byte* limit = parser->root.limit; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + /* skip whitespace */ + while ( is_space( *cur ) ) + { + cur++; + if ( cur >= limit ) + { + FT_ERROR(( "parse_encoding: out of bounds!\n" )); + parser->root.error = T1_Err_Invalid_File_Format; + return; + } + } + + /* if we have a number, then the encoding is an array, */ + /* and we must load it now */ + if ( (FT_Byte)( *cur - '0' ) < 10 ) + { + T1_Encoding encode = &face->type1.encoding; + FT_Int count, n; + PS_Table char_table = &loader->encoding_table; + FT_Memory memory = parser->root.memory; + FT_Error error; + + + if ( encode->char_index ) + /* with synthetic fonts, it's possible we get here twice */ + return; + + /* read the number of entries in the encoding, should be 256 */ + count = T1_ToInt( parser ); + if ( parser->root.error ) + return; + + /* we use a T1_Table to store our charnames */ + loader->num_chars = encode->num_chars = count; + if ( FT_NEW_ARRAY( encode->char_index, count ) || + FT_NEW_ARRAY( encode->char_name, count ) || + FT_SET_ERROR( psaux->ps_table_funcs->init( + char_table, count, memory ) ) ) + { + parser->root.error = error; + return; + } + + /* We need to `zero' out encoding_table.elements */ + for ( n = 0; n < count; n++ ) + { + char* notdef = (char *)".notdef"; + + + T1_Add_Table( char_table, n, notdef, 8 ); + } + + /* Now, we will need to read a record of the form */ + /* ... charcode /charname ... for each entry in our table */ + /* */ + /* We simply look for a number followed by an immediate */ + /* name. Note that this ignores correctly the sequence */ + /* that is often seen in type1 fonts: */ + /* */ + /* 0 1 255 { 1 index exch /.notdef put } for dup */ + /* */ + /* used to clean the encoding array before anything else. */ + /* */ + /* We stop when we encounter a `def'. */ + + cur = parser->root.cursor; + limit = parser->root.limit; + n = 0; + + for ( ; cur < limit; ) + { + FT_Byte c; + + + c = *cur; + + /* we stop when we encounter a `def' */ + if ( c == 'd' && cur + 3 < limit ) + { + if ( cur[1] == 'e' && + cur[2] == 'f' && + is_space( cur[-1] ) && + is_space( cur[3] ) ) + { + FT_TRACE6(( "encoding end\n" )); + break; + } + } + + /* otherwise, we must find a number before anything else */ + if ( (FT_Byte)( c - '0' ) < 10 ) + { + FT_Int charcode; + + + parser->root.cursor = cur; + charcode = T1_ToInt( parser ); + cur = parser->root.cursor; + + /* skip whitespace */ + while ( cur < limit && is_space( *cur ) ) + cur++; + + if ( cur < limit && *cur == '/' ) + { + /* bingo, we have an immediate name -- it must be a */ + /* character name */ + FT_Byte* cur2 = cur + 1; + FT_Int len; + + + while ( cur2 < limit && is_alpha( *cur2 ) ) + cur2++; + + len = (FT_Int)( cur2 - cur - 1 ); + + parser->root.error = T1_Add_Table( char_table, charcode, + cur + 1, len + 1 ); + char_table->elements[charcode][len] = '\0'; + if ( parser->root.error ) + return; + + cur = cur2; + } + } + else + cur++; + } + + face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; + parser->root.cursor = cur; + } + /* Otherwise, we should have either `StandardEncoding', */ + /* `ExpertEncoding', or `ISOLatin1Encoding' */ + else + { + if ( cur + 17 < limit && + ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; + + else if ( cur + 15 < limit && + ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; + + else if ( cur + 18 < limit && + ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; + + else + { + FT_ERROR(( "parse_encoding: invalid token!\n" )); + parser->root.error = T1_Err_Invalid_File_Format; + } + } + } + + + static void + parse_subrs( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + PS_Table table = &loader->subrs; + FT_Memory memory = parser->root.memory; + FT_Error error; + FT_Int n; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + if ( loader->num_subrs ) + /* with synthetic fonts, it's possible we get here twice */ + return; + + loader->num_subrs = T1_ToInt( parser ); + if ( parser->root.error ) + return; + + /* position the parser right before the `dup' of the first subr */ + T1_Skip_Spaces( parser ); + T1_Skip_Alpha( parser ); /* `array' */ + T1_Skip_Spaces( parser ); + + /* initialize subrs array */ + error = psaux->ps_table_funcs->init( table, loader->num_subrs, memory ); + if ( error ) + goto Fail; + + /* the format is simple: */ + /* */ + /* `index' + binary data */ + /* */ + for ( n = 0; n < loader->num_subrs; n++ ) + { + FT_Int idx, size; + FT_Byte* base; + + + /* If the next token isn't `dup', we are also done. This */ + /* happens when there are `holes' in the Subrs array. */ + if ( ft_strncmp( (char*)parser->root.cursor, "dup", 3 ) != 0 ) + break; + + idx = T1_ToInt( parser ); + + if ( !read_binary_data( parser, &size, &base ) ) + return; + + /* The binary string is followed by one token, e.g. `NP' */ + /* (bound to `noaccess put') or by two separate tokens: */ + /* `noaccess' & `put'. We position the parser right */ + /* before the next `dup', if any. */ + T1_Skip_Spaces( parser ); + T1_Skip_Alpha( parser ); /* `NP' or `I' or `noaccess' */ + T1_Skip_Spaces( parser ); + + if ( ft_strncmp( (char*)parser->root.cursor, "put", 3 ) == 0 ) + { + T1_Skip_Alpha( parser ); /* skip `put' */ + T1_Skip_Spaces( parser ); + } + + /* some fonts use a value of -1 for lenIV to indicate that */ + /* the charstrings are unencoded */ + /* */ + /* thanks to Tom Kacvinsky for pointing this out */ + /* */ + if ( face->type1.private_dict.lenIV >= 0 ) + { + FT_Byte* temp; + + + /* t1_decrypt() shouldn't write to base -- make temporary copy */ + if ( FT_ALLOC( temp, size ) ) + goto Fail; + FT_MEM_COPY( temp, base, size ); + psaux->t1_decrypt( temp, size, 4330 ); + size -= face->type1.private_dict.lenIV; + error = T1_Add_Table( table, idx, + temp + face->type1.private_dict.lenIV, size ); + FT_FREE( temp ); + } + else + error = T1_Add_Table( table, idx, base, size ); + if ( error ) + goto Fail; + } + return; + + Fail: + parser->root.error = error; + } + + + static void + parse_charstrings( T1_Face face, + T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + PS_Table code_table = &loader->charstrings; + PS_Table name_table = &loader->glyph_names; + PS_Table swap_table = &loader->swap_table; + FT_Memory memory = parser->root.memory; + FT_Error error; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + FT_Byte* cur; + FT_Byte* limit = parser->root.limit; + FT_Int n; + FT_UInt notdef_index = 0; + FT_Byte notdef_found = 0; + + + if ( loader->num_glyphs ) + /* with synthetic fonts, it's possible we get here twice */ + return; + + loader->num_glyphs = T1_ToInt( parser ); + if ( parser->root.error ) + return; + + /* initialize tables (leaving room for addition of .notdef, */ + /* if necessary). */ + + error = psaux->ps_table_funcs->init( code_table, + loader->num_glyphs + 1, + memory ); + if ( error ) + goto Fail; + + error = psaux->ps_table_funcs->init( name_table, + loader->num_glyphs + 1, + memory ); + if ( error ) + goto Fail; + + /* Initialize table for swapping index notdef_index and */ + /* index 0 names and codes (if necessary). */ + + error = psaux->ps_table_funcs->init( swap_table, 4, memory ); + + if ( error ) + goto Fail; + + n = 0; + + for (;;) + { + FT_Int size; + FT_Byte* base; + + + /* the format is simple: */ + /* `/glyphname' + binary data */ + /* */ + /* note that we stop when we find a `def' */ + /* */ + T1_Skip_Spaces( parser ); + + cur = parser->root.cursor; + if ( cur >= limit ) + break; + + /* we stop when we find a `def' or `end' keyword */ + if ( *cur == 'd' && + cur + 3 < limit && + cur[1] == 'e' && + cur[2] == 'f' ) + break; + + if ( *cur == 'e' && + cur + 3 < limit && + cur[1] == 'n' && + cur[2] == 'd' ) + break; + + if ( *cur != '/' ) + T1_Skip_Alpha( parser ); + else + { + FT_Byte* cur2 = cur + 1; + FT_Int len; + + + while ( cur2 < limit && is_alpha( *cur2 ) ) + cur2++; + len = (FT_Int)( cur2 - cur - 1 ); + + error = T1_Add_Table( name_table, n, cur + 1, len + 1 ); + if ( error ) + goto Fail; + + /* add a trailing zero to the name table */ + name_table->elements[n][len] = '\0'; + + /* record index of /.notdef */ + if ( ft_strcmp( (const char*)".notdef", + (const char*)(name_table->elements[n]) ) == 0 ) + { + notdef_index = n; + notdef_found = 1; + } + + parser->root.cursor = cur2; + if ( !read_binary_data( parser, &size, &base ) ) + return; + + if ( face->type1.private_dict.lenIV >= 0 ) + { + FT_Byte* temp; + + + /* t1_decrypt() shouldn't write to base -- make temporary copy */ + if ( FT_ALLOC( temp, size ) ) + goto Fail; + FT_MEM_COPY( temp, base, size ); + psaux->t1_decrypt( temp, size, 4330 ); + size -= face->type1.private_dict.lenIV; + error = T1_Add_Table( code_table, n, + temp + face->type1.private_dict.lenIV, size ); + FT_FREE( temp ); + } + else + error = T1_Add_Table( code_table, n, base, size ); + if ( error ) + goto Fail; + + n++; + if ( n >= loader->num_glyphs ) + break; + } + } + + loader->num_glyphs = n; + + /* if /.notdef is found but does not occupy index 0, do our magic. */ + if ( ft_strcmp( (const char*)".notdef", + (const char*)name_table->elements[0] ) && + notdef_found ) + { + /* Swap glyph in index 0 with /.notdef glyph. First, add index 0 */ + /* name and code entries to swap_table. Then place notdef_index name */ + /* and code entries into swap_table. Then swap name and code */ + /* entries at indices notdef_index and 0 using values stored in */ + /* swap_table. */ + + /* Index 0 name */ + error = T1_Add_Table( swap_table, 0, + name_table->elements[0], + name_table->lengths [0] ); + if ( error ) + goto Fail; + + /* Index 0 code */ + error = T1_Add_Table( swap_table, 1, + code_table->elements[0], + code_table->lengths [0] ); + if ( error ) + goto Fail; + + /* Index notdef_index name */ + error = T1_Add_Table( swap_table, 2, + name_table->elements[notdef_index], + name_table->lengths [notdef_index] ); + if ( error ) + goto Fail; + + /* Index notdef_index code */ + error = T1_Add_Table( swap_table, 3, + code_table->elements[notdef_index], + code_table->lengths [notdef_index] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( name_table, notdef_index, + swap_table->elements[0], + swap_table->lengths [0] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( code_table, notdef_index, + swap_table->elements[1], + swap_table->lengths [1] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( name_table, 0, + swap_table->elements[2], + swap_table->lengths [2] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( code_table, 0, + swap_table->elements[3], + swap_table->lengths [3] ); + if ( error ) + goto Fail; + + } + else if ( !notdef_found ) + { + /* notdef_index is already 0, or /.notdef is undefined in */ + /* charstrings dictionary. Worry about /.notdef undefined. */ + /* We take index 0 and add it to the end of the table(s) */ + /* and add our own /.notdef glyph to index 0. */ + + /* 0 333 hsbw endchar */ + FT_Byte notdef_glyph[] = {0x8B, 0xF7, 0xE1, 0x0D, 0x0E}; + char* notdef_name = (char *)".notdef"; + + + error = T1_Add_Table( swap_table, 0, + name_table->elements[0], + name_table->lengths [0] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( swap_table, 1, + code_table->elements[0], + code_table->lengths [0] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( name_table, 0, notdef_name, 8 ); + if ( error ) + goto Fail; + + error = T1_Add_Table( code_table, 0, notdef_glyph, 5 ); + + if ( error ) + goto Fail; + + error = T1_Add_Table( name_table, n, + swap_table->elements[0], + swap_table->lengths [0] ); + if ( error ) + goto Fail; + + error = T1_Add_Table( code_table, n, + swap_table->elements[1], + swap_table->lengths [1] ); + if ( error ) + goto Fail; + + /* we added a glyph. */ + loader->num_glyphs = n + 1; + } + + return; + + Fail: + parser->root.error = error; + } + + + static + const T1_FieldRec t1_keywords[] = + { + +#include "t1tokens.h" + + /* now add the special functions... */ + T1_FIELD_CALLBACK( "FontName", parse_font_name ) + T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox ) + T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix ) + T1_FIELD_CALLBACK( "Encoding", parse_encoding ) + T1_FIELD_CALLBACK( "Subrs", parse_subrs ) + T1_FIELD_CALLBACK( "CharStrings", parse_charstrings ) + +#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT + T1_FIELD_CALLBACK( "BlendDesignPositions", parse_blend_design_positions ) + T1_FIELD_CALLBACK( "BlendDesignMap", parse_blend_design_map ) + T1_FIELD_CALLBACK( "BlendAxisTypes", parse_blend_axis_types ) + T1_FIELD_CALLBACK( "WeightVector", parse_weight_vector ) + T1_FIELD_CALLBACK( "shareddict", parse_shared_dict ) +#endif + + { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 } + }; + + + static FT_Error + parse_dict( T1_Face face, + T1_Loader loader, + FT_Byte* base, + FT_Long size ) + { + T1_Parser parser = &loader->parser; + + + parser->root.cursor = base; + parser->root.limit = base + size; + parser->root.error = 0; + + { + FT_Byte* cur = base; + FT_Byte* limit = cur + size; + + + for ( ; cur < limit; cur++ ) + { + /* look for `FontDirectory', which causes problems on some fonts */ + if ( *cur == 'F' && cur + 25 < limit && + ft_strncmp( (char*)cur, "FontDirectory", 13 ) == 0 ) + { + FT_Byte* cur2; + + + /* skip the `FontDirectory' keyword */ + cur += 13; + cur2 = cur; + + /* lookup the `known' keyword */ + while ( cur < limit && *cur != 'k' && + ft_strncmp( (char*)cur, "known", 5 ) ) + cur++; + + if ( cur < limit ) + { + T1_TokenRec token; + + + /* skip the `known' keyword and the token following it */ + cur += 5; + loader->parser.root.cursor = cur; + T1_ToToken( &loader->parser, &token ); + + /* if the last token was an array, skip it! */ + if ( token.type == T1_TOKEN_TYPE_ARRAY ) + cur2 = parser->root.cursor; + } + cur = cur2; + } + /* look for immediates */ + else if ( *cur == '/' && cur + 2 < limit ) + { + FT_Byte* cur2; + FT_Int len; + + + cur++; + cur2 = cur; + while ( cur2 < limit && is_alpha( *cur2 ) ) + cur2++; + + len = (FT_Int)( cur2 - cur ); + if ( len > 0 && len < 22 ) + { + { + /* now, compare the immediate name to the keyword table */ + T1_Field keyword = (T1_Field)t1_keywords; + + + for (;;) + { + FT_Byte* name; + + + name = (FT_Byte*)keyword->ident; + if ( !name ) + break; + + if ( cur[0] == name[0] && + len == (FT_Int)ft_strlen( (const char*)name ) ) + { + FT_Int n; + + + for ( n = 1; n < len; n++ ) + if ( cur[n] != name[n] ) + break; + + if ( n >= len ) + { + /* we found it -- run the parsing callback! */ + parser->root.cursor = cur2; + T1_Skip_Spaces( parser ); + parser->root.error = t1_load_keyword( face, + loader, + keyword ); + if ( parser->root.error ) + return parser->root.error; + + cur = parser->root.cursor; + break; + } + } + keyword++; + } + } + } + } + } + } + return parser->root.error; + } + + + static void + t1_init_loader( T1_Loader loader, + T1_Face face ) + { + FT_UNUSED( face ); + + FT_MEM_SET( loader, 0, sizeof ( *loader ) ); + loader->num_glyphs = 0; + loader->num_chars = 0; + + /* initialize the tables -- simply set their `init' field to 0 */ + loader->encoding_table.init = 0; + loader->charstrings.init = 0; + loader->glyph_names.init = 0; + loader->subrs.init = 0; + loader->swap_table.init = 0; + loader->fontdata = 0; + } + + + static void + t1_done_loader( T1_Loader loader ) + { + T1_Parser parser = &loader->parser; + + + /* finalize tables */ + T1_Release_Table( &loader->encoding_table ); + T1_Release_Table( &loader->charstrings ); + T1_Release_Table( &loader->glyph_names ); + T1_Release_Table( &loader->swap_table ); + T1_Release_Table( &loader->subrs ); + + /* finalize parser */ + T1_Finalize_Parser( parser ); + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Open_Face( T1_Face face ) + { + T1_LoaderRec loader; + T1_Parser parser; + T1_Font type1 = &face->type1; + FT_Error error; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + t1_init_loader( &loader, face ); + + /* default lenIV */ + type1->private_dict.lenIV = 4; + + parser = &loader.parser; + error = T1_New_Parser( parser, + face->root.stream, + face->root.memory, + psaux ); + if ( error ) + goto Exit; + + error = parse_dict( face, &loader, parser->base_dict, parser->base_len ); + if ( error ) + goto Exit; + + error = T1_Get_Private_Dict( parser, psaux ); + if ( error ) + goto Exit; + + error = parse_dict( face, &loader, parser->private_dict, + parser->private_len ); + if ( error ) + goto Exit; + + /* now, propagate the subrs, charstrings, and glyphnames tables */ + /* to the Type1 data */ + type1->num_glyphs = loader.num_glyphs; + + if ( loader.subrs.init ) + { + loader.subrs.init = 0; + type1->num_subrs = loader.num_subrs; + type1->subrs_block = loader.subrs.block; + type1->subrs = loader.subrs.elements; + type1->subrs_len = loader.subrs.lengths; + } + + if ( !loader.charstrings.init ) + { + FT_ERROR(( "T1_Open_Face: no charstrings array in face!\n" )); + error = T1_Err_Invalid_File_Format; + } + + loader.charstrings.init = 0; + type1->charstrings_block = loader.charstrings.block; + type1->charstrings = loader.charstrings.elements; + type1->charstrings_len = loader.charstrings.lengths; + + /* we copy the glyph names `block' and `elements' fields; */ + /* the `lengths' field must be released later */ + type1->glyph_names_block = loader.glyph_names.block; + type1->glyph_names = (FT_String**)loader.glyph_names.elements; + loader.glyph_names.block = 0; + loader.glyph_names.elements = 0; + + /* we must now build type1.encoding when we have a custom array */ + if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY ) + { + FT_Int charcode, idx, min_char, max_char; + FT_Byte* char_name; + FT_Byte* glyph_name; + + + /* OK, we do the following: for each element in the encoding */ + /* table, look up the index of the glyph having the same name */ + /* the index is then stored in type1.encoding.char_index, and */ + /* a the name to type1.encoding.char_name */ + + min_char = +32000; + max_char = -32000; + + charcode = 0; + for ( ; charcode < loader.encoding_table.max_elems; charcode++ ) + { + type1->encoding.char_index[charcode] = 0; + type1->encoding.char_name [charcode] = (char *)".notdef"; + + char_name = loader.encoding_table.elements[charcode]; + if ( char_name ) + for ( idx = 0; idx < type1->num_glyphs; idx++ ) + { + glyph_name = (FT_Byte*)type1->glyph_names[idx]; + if ( ft_strcmp( (const char*)char_name, + (const char*)glyph_name ) == 0 ) + { + type1->encoding.char_index[charcode] = (FT_UShort)idx; + type1->encoding.char_name [charcode] = (char*)glyph_name; + + /* Change min/max encoded char only if glyph name is */ + /* not /.notdef */ + if ( ft_strcmp( (const char*)".notdef", + (const char*)glyph_name ) != 0 ) + { + if ( charcode < min_char ) min_char = charcode; + if ( charcode > max_char ) max_char = charcode; + } + break; + } + } + } + type1->encoding.code_first = min_char; + type1->encoding.code_last = max_char; + type1->encoding.num_chars = loader.num_chars; + } + + Exit: + t1_done_loader( &loader ); + return error; + } + + +/* END */ diff --git a/src/libs/freetype2/type1/t1load.h b/src/libs/freetype2/type1/t1load.h new file mode 100644 index 0000000000..804a010450 --- /dev/null +++ b/src/libs/freetype2/type1/t1load.h @@ -0,0 +1,84 @@ +/***************************************************************************/ +/* */ +/* t1load.h */ +/* */ +/* Type 1 font loader (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1LOAD_H__ +#define __T1LOAD_H__ + + +#include +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_POSTSCRIPT_AUX_H +#include FT_MULTIPLE_MASTERS_H + +#include "t1parse.h" + + +FT_BEGIN_HEADER + + + typedef struct T1_Loader_ + { + T1_ParserRec parser; /* parser used to read the stream */ + + FT_Int num_chars; /* number of characters in encoding */ + PS_TableRec encoding_table; /* PS_Table used to store the */ + /* encoding character names */ + + FT_Int num_glyphs; + PS_TableRec glyph_names; + PS_TableRec charstrings; + PS_TableRec swap_table; /* For moving .notdef glyph to index 0. */ + + FT_Int num_subrs; + PS_TableRec subrs; + FT_Bool fontdata; + + } T1_LoaderRec, *T1_Loader; + + + FT_LOCAL( FT_Error ) + T1_Open_Face( T1_Face face ); + +#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT + + FT_LOCAL( FT_Error ) + T1_Get_Multi_Master( T1_Face face, + FT_Multi_Master* master ); + + FT_LOCAL( FT_Error ) + T1_Set_MM_Blend( T1_Face face, + FT_UInt num_coords, + FT_Fixed* coords ); + + FT_LOCAL( FT_Error ) + T1_Set_MM_Design( T1_Face face, + FT_UInt num_coords, + FT_Long* coords ); + + FT_LOCAL( void ) + T1_Done_Blend( T1_Face face ); + +#endif /* !T1_CONFIG_OPTION_NO_MM_SUPPORT */ + + +FT_END_HEADER + +#endif /* __T1LOAD_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1objs.c b/src/libs/freetype2/type1/t1objs.c new file mode 100644 index 0000000000..5a6008d290 --- /dev/null +++ b/src/libs/freetype2/type1/t1objs.c @@ -0,0 +1,616 @@ +/***************************************************************************/ +/* */ +/* t1objs.c */ +/* */ +/* Type 1 objects manager (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H + +#include "t1gload.h" +#include "t1load.h" + +#include "t1errors.h" + +#ifndef T1_CONFIG_OPTION_NO_AFM +#include "t1afm.h" +#endif + +#include FT_INTERNAL_POSTSCRIPT_NAMES_H +#include FT_INTERNAL_POSTSCRIPT_AUX_H + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1objs + + + /*************************************************************************/ + /* */ + /* SIZE FUNCTIONS */ + /* */ + /* note that we store the global hints in the size's "internal" root */ + /* field */ + /* */ + /*************************************************************************/ + + + static PSH_Globals_Funcs + T1_Size_Get_Globals_Funcs( T1_Size size ) + { + T1_Face face = (T1_Face)size->root.face; + PSHinter_Service pshinter = (PSHinter_Service)face->pshinter; + FT_Module module; + + + module = FT_Get_Module( size->root.face->driver->root.library, + "pshinter" ); + return ( module && pshinter && pshinter->get_globals_funcs ) + ? pshinter->get_globals_funcs( module ) + : 0 ; + } + + + FT_LOCAL_DEF( void ) + T1_Size_Done( T1_Size size ) + { + if ( size->root.internal ) + { + PSH_Globals_Funcs funcs; + + + funcs = T1_Size_Get_Globals_Funcs( size ); + if ( funcs ) + funcs->destroy( (PSH_Globals)size->root.internal ); + + size->root.internal = 0; + } + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Size_Init( T1_Size size ) + { + FT_Error error = 0; + PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); + + + if ( funcs ) + { + PSH_Globals globals; + T1_Face face = (T1_Face)size->root.face; + + + error = funcs->create( size->root.face->memory, + &face->type1.private_dict, &globals ); + if ( !error ) + size->root.internal = (FT_Size_Internal)(void*)globals; + } + + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Size_Reset( T1_Size size ) + { + PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); + FT_Error error = 0; + + + if ( funcs ) + error = funcs->set_scale( (PSH_Globals)size->root.internal, + size->root.metrics.x_scale, + size->root.metrics.y_scale, + 0, 0 ); + return error; + } + + + /*************************************************************************/ + /* */ + /* SLOT FUNCTIONS */ + /* */ + /*************************************************************************/ + + FT_LOCAL_DEF( void ) + T1_GlyphSlot_Done( T1_GlyphSlot slot ) + { + slot->root.internal->glyph_hints = 0; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_GlyphSlot_Init( T1_GlyphSlot slot ) + { + T1_Face face; + PSHinter_Service pshinter; + + + face = (T1_Face)slot->root.face; + pshinter = (PSHinter_Service)face->pshinter; + + if ( pshinter ) + { + FT_Module module; + + + module = FT_Get_Module( slot->root.face->driver->root.library, "pshinter" ); + if (module) + { + T1_Hints_Funcs funcs; + + funcs = pshinter->get_t1_funcs( module ); + slot->root.internal->glyph_hints = (void*)funcs; + } + } + return 0; + } + + + /*************************************************************************/ + /* */ + /* FACE FUNCTIONS */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Face_Done */ + /* */ + /* */ + /* The face object destructor. */ + /* */ + /* */ + /* face :: A typeless pointer to the face object to destroy. */ + /* */ + FT_LOCAL_DEF( void ) + T1_Face_Done( T1_Face face ) + { + FT_Memory memory; + T1_Font type1 = &face->type1; + + + if ( face ) + { + memory = face->root.memory; + +#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT + /* release multiple masters information */ + T1_Done_Blend( face ); + face->blend = 0; +#endif + + /* release font info strings */ + { + PS_FontInfo info = &type1->font_info; + + + FT_FREE( info->version ); + FT_FREE( info->notice ); + FT_FREE( info->full_name ); + FT_FREE( info->family_name ); + FT_FREE( info->weight ); + } + + /* release top dictionary */ + FT_FREE( type1->charstrings_len ); + FT_FREE( type1->charstrings ); + FT_FREE( type1->glyph_names ); + + FT_FREE( type1->subrs ); + FT_FREE( type1->subrs_len ); + + FT_FREE( type1->subrs_block ); + FT_FREE( type1->charstrings_block ); + FT_FREE( type1->glyph_names_block ); + + FT_FREE( type1->encoding.char_index ); + FT_FREE( type1->encoding.char_name ); + FT_FREE( type1->font_name ); + +#ifndef T1_CONFIG_OPTION_NO_AFM + /* release afm data if present */ + if ( face->afm_data ) + T1_Done_AFM( memory, (T1_AFM*)face->afm_data ); +#endif + + /* release unicode map, if any */ + FT_FREE( face->unicode_map.maps ); + face->unicode_map.num_maps = 0; + + face->root.family_name = 0; + face->root.style_name = 0; + } + } + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Face_Init */ + /* */ + /* */ + /* The face object constructor. */ + /* */ + /* */ + /* stream :: input stream where to load font data. */ + /* */ + /* face_index :: The index of the font face in the resource. */ + /* */ + /* num_params :: Number of additional generic parameters. Ignored. */ + /* */ + /* params :: Additional generic parameters. Ignored. */ + /* */ + /* */ + /* face :: The face record to build. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + T1_Face_Init( FT_Stream stream, + T1_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ) + { + FT_Error error; + PSNames_Service psnames; + PSAux_Service psaux; + PSHinter_Service pshinter; + + FT_UNUSED( num_params ); + FT_UNUSED( params ); + FT_UNUSED( face_index ); + FT_UNUSED( stream ); + + + face->root.num_faces = 1; + + face->psnames = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), + "psnames" ); + psnames = (PSNames_Service)face->psnames; + + face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), + "psaux" ); + psaux = (PSAux_Service)face->psaux; + + face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), + "pshinter" ); + pshinter = (PSHinter_Service)face->pshinter; + + /* open the tokenizer, this will also check the font format */ + error = T1_Open_Face( face ); + if ( error ) + goto Exit; + + /* if we just wanted to check the format, leave successfully now */ + if ( face_index < 0 ) + goto Exit; + + /* check the face index */ + if ( face_index != 0 ) + { + FT_ERROR(( "T1_Face_Init: invalid face index\n" )); + error = T1_Err_Invalid_Argument; + goto Exit; + } + + /* Now, load the font program into the face object */ + + /* Init the face object fields */ + /* Now set up root face fields */ + { + FT_Face root = (FT_Face)&face->root; + + + root->num_glyphs = face->type1.num_glyphs; + root->face_index = face_index; + + root->face_flags = FT_FACE_FLAG_SCALABLE; + root->face_flags |= FT_FACE_FLAG_HORIZONTAL; + root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; + + if ( face->type1.font_info.is_fixed_pitch ) + root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; + + if ( face->blend ) + root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS; + + /* XXX: TODO -- add kerning with .afm support */ + + /* get style name -- be careful, some broken fonts only */ + /* have a `/FontName' dictionary entry! */ + root->family_name = face->type1.font_info.family_name; + if ( root->family_name ) + { + char* full = face->type1.font_info.full_name; + char* family = root->family_name; + + + if ( full ) + { + while ( *family && *full == *family ) + { + family++; + full++; + } + + root->style_name = ( *full == ' ' ? full + 1 + : (char *)"Regular" ); + } + else + root->style_name = (char *)"Regular"; + } + else + { + /* do we have a `/FontName'? */ + if ( face->type1.font_name ) + { + root->family_name = face->type1.font_name; + root->style_name = (char *)"Regular"; + } + } + + /* compute style flags */ + root->style_flags = 0; + if ( face->type1.font_info.italic_angle ) + root->style_flags |= FT_STYLE_FLAG_ITALIC; + if ( face->type1.font_info.weight ) + { + if ( !ft_strcmp( face->type1.font_info.weight, "Bold" ) || + !ft_strcmp( face->type1.font_info.weight, "Black" ) ) + root->style_flags |= FT_STYLE_FLAG_BOLD; + } + + /* no embedded bitmap support */ + root->num_fixed_sizes = 0; + root->available_sizes = 0; + + root->bbox.xMin = face->type1.font_bbox.xMin >> 16; + root->bbox.yMin = face->type1.font_bbox.yMin >> 16; + root->bbox.xMax = ( face->type1.font_bbox.xMax + 0xFFFFU ) >> 16; + root->bbox.yMax = ( face->type1.font_bbox.yMax + 0xFFFFU ) >> 16; + + /* Set units_per_EM if we didn't set it in parse_font_matrix. */ + if ( !root->units_per_EM ) + root->units_per_EM = 1000; + + root->ascender = (FT_Short)( root->bbox.yMax ); + root->descender = (FT_Short)( root->bbox.yMin ); + root->height = (FT_Short)( + ( ( root->ascender - root->descender ) * 12 ) / 10 ); + + /* now compute the maximum advance width */ + root->max_advance_width = + (FT_Short)( root->bbox.xMax ); + { + FT_Int max_advance; + + + error = T1_Compute_Max_Advance( face, &max_advance ); + + /* in case of error, keep the standard width */ + if ( !error ) + root->max_advance_width = (FT_Short)max_advance; + else + error = 0; /* clear error */ + } + + root->max_advance_height = root->height; + + root->underline_position = face->type1.font_info.underline_position; + root->underline_thickness = face->type1.font_info.underline_thickness; + + root->internal->max_points = 0; + root->internal->max_contours = 0; + } + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + + { + FT_Face root = &face->root; + + + if ( psnames && psaux ) + { + FT_CharMapRec charmap; + T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes; + FT_CMap_Class clazz; + + + charmap.face = root; + + /* first of all, try to synthetize a Unicode charmap */ + charmap.platform_id = 3; + charmap.encoding_id = 1; + charmap.encoding = ft_encoding_unicode; + + FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL ); + + /* now, generate an Adobe Standard encoding when appropriate */ + charmap.platform_id = 7; + clazz = NULL; + + switch ( face->type1.encoding_type ) + { + case T1_ENCODING_TYPE_STANDARD: + charmap.encoding = ft_encoding_adobe_standard; + charmap.encoding_id = 0; + clazz = cmap_classes->standard; + break; + + case T1_ENCODING_TYPE_EXPERT: + charmap.encoding = ft_encoding_adobe_expert; + charmap.encoding_id = 1; + clazz = cmap_classes->expert; + break; + + case T1_ENCODING_TYPE_ARRAY: + charmap.encoding = ft_encoding_adobe_custom; + charmap.encoding_id = 2; + clazz = cmap_classes->custom; + break; + + case T1_ENCODING_TYPE_ISOLATIN1: + charmap.encoding = ft_encoding_latin_1; + charmap.encoding_id = 3; + clazz = cmap_classes->unicode; + break; + + default: + ; + } + + if ( clazz ) + FT_CMap_New( clazz, NULL, &charmap, NULL ); + + /* Select default charmap */ + if (root->num_charmaps) + root->charmap = root->charmaps[0]; + } + } + +#else /* !FT_CONFIG_OPTION_USE_CMAPS */ + + /* charmap support -- synthetize unicode charmap if possible */ + { + FT_Face root = &face->root; + FT_CharMap charmap = face->charmaprecs; + + + /* synthesize a Unicode charmap if there is support in the `PSNames' */ + /* module */ + if ( psnames ) + { + if ( psnames->unicode_value ) + { + error = psnames->build_unicodes( + root->memory, + face->type1.num_glyphs, + (const char**)face->type1.glyph_names, + &face->unicode_map ); + if ( !error ) + { + root->charmap = charmap; + charmap->face = (FT_Face)face; + charmap->encoding = ft_encoding_unicode; + charmap->platform_id = 3; + charmap->encoding_id = 1; + charmap++; + } + + /* simply clear the error in case of failure (which really) */ + /* means that out of memory or no unicode glyph names */ + error = T1_Err_Ok; + } + } + + /* now, support either the standard, expert, or custom encoding */ + charmap->face = (FT_Face)face; + charmap->platform_id = 7; /* a new platform id for Adobe fonts? */ + + switch ( face->type1.encoding_type ) + { + case T1_ENCODING_TYPE_STANDARD: + charmap->encoding = ft_encoding_adobe_standard; + charmap->encoding_id = 0; + break; + + case T1_ENCODING_TYPE_EXPERT: + charmap->encoding = ft_encoding_adobe_expert; + charmap->encoding_id = 1; + break; + + case T1_ENCODING_TYPE_ARRAY: + charmap->encoding = ft_encoding_adobe_custom; + charmap->encoding_id = 2; + break; + + case T1_ENCODING_TYPE_ISOLATIN1: + charmap->encoding = ft_encoding_latin_1; + charmap->encoding_id = 3; + break; + + default: + FT_ERROR(( "T1_Face_Init: invalid encoding\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + + root->charmaps = face->charmaps; + root->num_charmaps = charmap - face->charmaprecs + 1; + face->charmaps[0] = &face->charmaprecs[0]; + face->charmaps[1] = &face->charmaprecs[1]; + } + +#endif /* !FT_CONFIG_OPTION_USE_CMAPS */ + + Exit: + return error; + } + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Driver_Init */ + /* */ + /* */ + /* Initializes a given Type 1 driver object. */ + /* */ + /* */ + /* driver :: A handle to the target driver object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + T1_Driver_Init( T1_Driver driver ) + { + FT_UNUSED( driver ); + + return T1_Err_Ok; + } + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Driver_Done */ + /* */ + /* */ + /* Finalizes a given Type 1 driver. */ + /* */ + /* */ + /* driver :: A handle to the target Type 1 driver. */ + /* */ + FT_LOCAL_DEF( void ) + T1_Driver_Done( T1_Driver driver ) + { + FT_UNUSED( driver ); + } + + +/* END */ diff --git a/src/libs/freetype2/type1/t1objs.h b/src/libs/freetype2/type1/t1objs.h new file mode 100644 index 0000000000..9aeb10dd22 --- /dev/null +++ b/src/libs/freetype2/type1/t1objs.h @@ -0,0 +1,170 @@ +/***************************************************************************/ +/* */ +/* t1objs.h */ +/* */ +/* Type 1 objects manager (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1OBJS_H__ +#define __T1OBJS_H__ + + +#include +#include FT_INTERNAL_OBJECTS_H +#include FT_CONFIG_CONFIG_H +#include FT_INTERNAL_TYPE1_TYPES_H + + +FT_BEGIN_HEADER + + + /* The following structures must be defined by the hinter */ + typedef struct T1_Size_Hints_ T1_Size_Hints; + typedef struct T1_Glyph_Hints_ T1_Glyph_Hints; + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Driver */ + /* */ + /* */ + /* A handle to a Type 1 driver object. */ + /* */ + typedef struct T1_DriverRec_ *T1_Driver; + + + /*************************************************************************/ + /* */ + /* */ + /* T1_Size */ + /* */ + /* */ + /* A handle to a Type 1 size object. */ + /* */ + typedef struct T1_SizeRec_* T1_Size; + + + /*************************************************************************/ + /* */ + /* */ + /* T1_GlyphSlot */ + /* */ + /* */ + /* A handle to a Type 1 glyph slot object. */ + /* */ + typedef struct T1_GlyphSlotRec_* T1_GlyphSlot; + + + /*************************************************************************/ + /* */ + /* */ + /* T1_CharMap */ + /* */ + /* */ + /* A handle to a Type 1 character mapping object. */ + /* */ + /* */ + /* The Type 1 format doesn't use a charmap but an encoding table. */ + /* The driver is responsible for making up charmap objects */ + /* corresponding to these tables. */ + /* */ + typedef struct T1_CharMapRec_* T1_CharMap; + + + /*************************************************************************/ + /* */ + /* HERE BEGINS THE TYPE1 SPECIFIC STUFF */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* */ + /* T1_SizeRec */ + /* */ + /* */ + /* Type 1 size record. */ + /* */ + typedef struct T1_SizeRec_ + { + FT_SizeRec root; + + } T1_SizeRec; + + + FT_LOCAL( void ) + T1_Size_Done( T1_Size size ); + + FT_LOCAL( FT_Error ) + T1_Size_Reset( T1_Size size ); + + FT_LOCAL( FT_Error ) + T1_Size_Init( T1_Size size ); + + + /*************************************************************************/ + /* */ + /* */ + /* T1_GlyphSlotRec */ + /* */ + /* */ + /* Type 1 glyph slot record. */ + /* */ + typedef struct T1_GlyphSlotRec_ + { + FT_GlyphSlotRec root; + + FT_Bool hint; + FT_Bool scaled; + + FT_Int max_points; + FT_Int max_contours; + + FT_Fixed x_scale; + FT_Fixed y_scale; + + } T1_GlyphSlotRec; + + + FT_LOCAL( FT_Error ) + T1_Face_Init( FT_Stream stream, + T1_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ); + + FT_LOCAL( void ) + T1_Face_Done( T1_Face face ); + + FT_LOCAL( FT_Error ) + T1_GlyphSlot_Init( T1_GlyphSlot slot ); + + FT_LOCAL( void ) + T1_GlyphSlot_Done( T1_GlyphSlot slot ); + + FT_LOCAL( FT_Error ) + T1_Driver_Init( T1_Driver driver ); + + FT_LOCAL( void ) + T1_Driver_Done( T1_Driver driver ); + + +FT_END_HEADER + +#endif /* __T1OBJS_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1parse.c b/src/libs/freetype2/type1/t1parse.c new file mode 100644 index 0000000000..3107e0a08e --- /dev/null +++ b/src/libs/freetype2/type1/t1parse.c @@ -0,0 +1,460 @@ +/***************************************************************************/ +/* */ +/* t1parse.c */ +/* */ +/* Type 1 parser (body). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* The Type 1 parser is in charge of the following: */ + /* */ + /* - provide an implementation of a growing sequence of objects called */ + /* a `T1_Table' (used to build various tables needed by the loader). */ + /* */ + /* - opening .pfb and .pfa files to extract their top-level and private */ + /* dictionaries. */ + /* */ + /* - read numbers, arrays & strings from any dictionary. */ + /* */ + /* See `t1load.c' to see how data is loaded from the font file. */ + /* */ + /*************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_CALC_H +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_POSTSCRIPT_AUX_H + +#include "t1parse.h" + +#include "t1errors.h" + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t1parse + + + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** INPUT STREAM PARSER *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + + +#define IS_T1_WHITESPACE( c ) ( (c) == ' ' || (c) == '\t' ) +#define IS_T1_LINESPACE( c ) ( (c) == '\r' || (c) == '\n' ) + +#define IS_T1_SPACE( c ) ( IS_T1_WHITESPACE( c ) || IS_T1_LINESPACE( c ) ) + + + typedef struct PFB_Tag_ + { + FT_UShort tag; + FT_Long size; + + } PFB_Tag; + + +#undef FT_STRUCTURE +#define FT_STRUCTURE PFB_Tag + + + static + const FT_Frame_Field pfb_tag_fields[] = + { + FT_FRAME_START( 6 ), + FT_FRAME_USHORT ( tag ), + FT_FRAME_LONG_LE( size ), + FT_FRAME_END + }; + + + static FT_Error + read_pfb_tag( FT_Stream stream, + FT_UShort* tag, + FT_Long* size ) + { + FT_Error error; + PFB_Tag head; + + + *tag = 0; + *size = 0; + if ( !FT_STREAM_READ_FIELDS( pfb_tag_fields, &head ) ) + { + if ( head.tag == 0x8001U || head.tag == 0x8002U ) + { + *tag = head.tag; + *size = head.size; + } + } + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_New_Parser( T1_Parser parser, + FT_Stream stream, + FT_Memory memory, + PSAux_Service psaux ) + { + FT_Error error; + FT_UShort tag; + FT_Long size; + + + psaux->ps_parser_funcs->init( &parser->root,0, 0, memory ); + + parser->stream = stream; + parser->base_len = 0; + parser->base_dict = 0; + parser->private_len = 0; + parser->private_dict = 0; + parser->in_pfb = 0; + parser->in_memory = 0; + parser->single_block = 0; + + /******************************************************************/ + /* */ + /* Here a short summary of what is going on: */ + /* */ + /* When creating a new Type 1 parser, we try to locate and load */ + /* the base dictionary if this is possible (i.e. for PFB */ + /* files). Otherwise, we load the whole font into memory. */ + /* */ + /* When `loading' the base dictionary, we only setup pointers */ + /* in the case of a memory-based stream. Otherwise, we */ + /* allocate and load the base dictionary in it. */ + /* */ + /* parser->in_pfb is set if we are in a binary (".pfb") font. */ + /* parser->in_memory is set if we have a memory stream. */ + /* */ + + /* try to compute the size of the base dictionary; */ + /* look for a Postscript binary file tag, i.e 0x8001 */ + if ( FT_STREAM_SEEK( 0L ) ) + goto Exit; + + error = read_pfb_tag( stream, &tag, &size ); + if ( error ) + goto Exit; + + if ( tag != 0x8001U ) + { + /* assume that this is a PFA file for now; an error will */ + /* be produced later when more things are checked */ + if ( FT_STREAM_SEEK( 0L ) ) + goto Exit; + size = stream->size; + } + else + parser->in_pfb = 1; + + /* now, try to load `size' bytes of the `base' dictionary we */ + /* found previously */ + + /* if it is a memory-based resource, set up pointers */ + if ( !stream->read ) + { + parser->base_dict = (FT_Byte*)stream->base + stream->pos; + parser->base_len = size; + parser->in_memory = 1; + + /* check that the `size' field is valid */ + if ( FT_STREAM_SKIP( size ) ) + goto Exit; + } + else + { + /* read segment in memory */ + if ( FT_ALLOC( parser->base_dict, size ) || + FT_STREAM_READ( parser->base_dict, size ) ) + goto Exit; + parser->base_len = size; + } + + /* Now check font format; we must see `%!PS-AdobeFont-1' */ + /* or `%!FontType' */ + { + if ( size <= 16 || + ( ft_strncmp( (const char*)parser->base_dict, + "%!PS-AdobeFont-1", 16 ) && + ft_strncmp( (const char*)parser->base_dict, + "%!FontType", 10 ) ) ) + { + FT_TRACE2(( "[not a Type1 font]\n" )); + error = T1_Err_Unknown_File_Format; + } + else + { + parser->root.base = parser->base_dict; + parser->root.cursor = parser->base_dict; + parser->root.limit = parser->root.cursor + parser->base_len; + } + } + + Exit: + if ( error && !parser->in_memory ) + FT_FREE( parser->base_dict ); + + return error; + } + + + FT_LOCAL_DEF( void ) + T1_Finalize_Parser( T1_Parser parser ) + { + FT_Memory memory = parser->root.memory; + + + /* always free the private dictionary */ + FT_FREE( parser->private_dict ); + + /* free the base dictionary only when we have a disk stream */ + if ( !parser->in_memory ) + FT_FREE( parser->base_dict ); + + parser->root.funcs.done( &parser->root ); + } + + + /* return the value of an hexadecimal digit */ + static int + hexa_value( char c ) + { + unsigned int d; + + + d = (unsigned int)( c - '0' ); + if ( d <= 9 ) + return (int)d; + + d = (unsigned int)( c - 'a' ); + if ( d <= 5 ) + return (int)( d + 10 ); + + d = (unsigned int)( c - 'A' ); + if ( d <= 5 ) + return (int)( d + 10 ); + + return -1; + } + + + FT_LOCAL_DEF( FT_Error ) + T1_Get_Private_Dict( T1_Parser parser, + PSAux_Service psaux ) + { + FT_Stream stream = parser->stream; + FT_Memory memory = parser->root.memory; + FT_Error error = 0; + FT_Long size; + + + if ( parser->in_pfb ) + { + /* in the case of the PFB format, the private dictionary can be */ + /* made of several segments. We thus first read the number of */ + /* segments to compute the total size of the private dictionary */ + /* then re-read them into memory. */ + FT_Long start_pos = FT_STREAM_POS(); + FT_UShort tag; + + + parser->private_len = 0; + for (;;) + { + error = read_pfb_tag( stream, &tag, &size ); + if ( error ) + goto Fail; + + if ( tag != 0x8002U ) + break; + + parser->private_len += size; + + if ( FT_STREAM_SKIP( size ) ) + goto Fail; + } + + /* Check that we have a private dictionary there */ + /* and allocate private dictionary buffer */ + if ( parser->private_len == 0 ) + { + FT_ERROR(( "T1_Get_Private_Dict:" )); + FT_ERROR(( " invalid private dictionary section\n" )); + error = T1_Err_Invalid_File_Format; + goto Fail; + } + + if ( FT_STREAM_SEEK( start_pos ) || + FT_ALLOC( parser->private_dict, parser->private_len ) ) + goto Fail; + + parser->private_len = 0; + for (;;) + { + error = read_pfb_tag( stream, &tag, &size ); + if ( error || tag != 0x8002U ) + { + error = T1_Err_Ok; + break; + } + + if ( FT_STREAM_READ( parser->private_dict + parser->private_len, size ) ) + goto Fail; + + parser->private_len += size; + } + } + else + { + /* we have already `loaded' the whole PFA font file into memory; */ + /* if this is a memory resource, allocate a new block to hold */ + /* the private dict. Otherwise, simply overwrite into the base */ + /* dictionary block in the heap. */ + + /* first of all, look at the `eexec' keyword */ + FT_Byte* cur = parser->base_dict; + FT_Byte* limit = cur + parser->base_len; + FT_Byte c; + + + for (;;) + { + c = cur[0]; + if ( c == 'e' && cur + 9 < limit ) /* 9 = 5 letters for `eexec' + */ + /* newline + 4 chars */ + { + if ( cur[1] == 'e' && cur[2] == 'x' && + cur[3] == 'e' && cur[4] == 'c' ) + { + cur += 6; /* we skip the newling after the `eexec' */ + + /* XXX: Some fonts use DOS-linefeeds, i.e. \r\n; we need to */ + /* skip the extra \n if we find it */ + if ( cur[0] == '\n' ) + cur++; + + break; + } + } + cur++; + if ( cur >= limit ) + { + FT_ERROR(( "T1_Get_Private_Dict:" )); + FT_ERROR(( " could not find `eexec' keyword\n" )); + error = T1_Err_Invalid_File_Format; + goto Exit; + } + } + + /* now determine where to write the _encrypted_ binary private */ + /* dictionary. We overwrite the base dictionary for disk-based */ + /* resources and allocate a new block otherwise */ + + size = (FT_Long)( parser->base_len - ( cur - parser->base_dict ) ); + + if ( parser->in_memory ) + { + /* note that we allocate one more byte to put a terminating `0' */ + if ( FT_ALLOC( parser->private_dict, size + 1 ) ) + goto Fail; + parser->private_len = size; + } + else + { + parser->single_block = 1; + parser->private_dict = parser->base_dict; + parser->private_len = size; + parser->base_dict = 0; + parser->base_len = 0; + } + + /* now determine whether the private dictionary is encoded in binary */ + /* or hexadecimal ASCII format -- decode it accordingly */ + + /* we need to access the next 4 bytes (after the final \r following */ + /* the `eexec' keyword); if they all are hexadecimal digits, then */ + /* we have a case of ASCII storage */ + + if ( ( hexa_value( cur[0] ) | hexa_value( cur[1] ) | + hexa_value( cur[2] ) | hexa_value( cur[3] ) ) < 0 ) + + /* binary encoding -- `simply' copy the private dict */ + FT_MEM_COPY( parser->private_dict, cur, size ); + + else + { + /* ASCII hexadecimal encoding */ + + FT_Byte* write; + FT_Int count; + + + write = parser->private_dict; + count = 0; + + for ( ;cur < limit; cur++ ) + { + int hex1; + + + /* check for newline */ + if ( cur[0] == '\r' || cur[0] == '\n' ) + continue; + + /* exit if we have a non-hexadecimal digit that isn't a newline */ + hex1 = hexa_value( cur[0] ); + if ( hex1 < 0 || cur + 1 >= limit ) + break; + + /* otherwise, store byte */ + *write++ = (FT_Byte)( ( hex1 << 4 ) | hexa_value( cur[1] ) ); + count++; + cur++; + } + + /* put a safeguard */ + parser->private_len = (FT_Int)( write - parser->private_dict ); + *write++ = 0; + } + } + + /* we now decrypt the encoded binary private dictionary */ + psaux->t1_decrypt( parser->private_dict, parser->private_len, 55665U ); + parser->root.base = parser->private_dict; + parser->root.cursor = parser->private_dict; + parser->root.limit = parser->root.cursor + parser->private_len; + + Fail: + Exit: + return error; + } + + +/* END */ diff --git a/src/libs/freetype2/type1/t1parse.h b/src/libs/freetype2/type1/t1parse.h new file mode 100644 index 0000000000..1341493a74 --- /dev/null +++ b/src/libs/freetype2/type1/t1parse.h @@ -0,0 +1,135 @@ +/***************************************************************************/ +/* */ +/* t1parse.h */ +/* */ +/* Type 1 parser (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T1PARSE_H__ +#define __T1PARSE_H__ + + +#include +#include FT_INTERNAL_TYPE1_TYPES_H +#include FT_INTERNAL_STREAM_H + + +FT_BEGIN_HEADER + + + /*************************************************************************/ + /* */ + /* */ + /* T1_ParserRec */ + /* */ + /* */ + /* A PS_ParserRec is an object used to parse a Type 1 fonts very */ + /* quickly. */ + /* */ + /* */ + /* root :: The root parser. */ + /* */ + /* stream :: The current input stream. */ + /* */ + /* base_dict :: A pointer to the top-level dictionary. */ + /* */ + /* base_len :: The length in bytes of the top dictionary. */ + /* */ + /* private_dict :: A pointer to the private dictionary. */ + /* */ + /* private_len :: The length in bytes of the private dictionary. */ + /* */ + /* in_pfb :: A boolean. Indicates that we are handling a PFB */ + /* file. */ + /* */ + /* in_memory :: A boolean. Indicates a memory-based stream. */ + /* */ + /* single_block :: A boolean. Indicates that the private dictionary */ + /* is stored in lieu of the base dictionary. */ + /* */ + typedef struct T1_ParserRec_ + { + PS_ParserRec root; + FT_Stream stream; + + FT_Byte* base_dict; + FT_Int base_len; + + FT_Byte* private_dict; + FT_Int private_len; + + FT_Byte in_pfb; + FT_Byte in_memory; + FT_Byte single_block; + + } T1_ParserRec, *T1_Parser; + + +#define T1_Add_Table( p, i, o, l ) (p)->funcs.add( (p), i, o, l ) +#define T1_Done_Table( p ) \ + do \ + { \ + if ( (p)->funcs.done ) \ + (p)->funcs.done( p ); \ + } while ( 0 ) +#define T1_Release_Table( p ) \ + do \ + { \ + if ( (p)->funcs.release ) \ + (p)->funcs.release( p ); \ + } while ( 0 ) + + +#define T1_Skip_Spaces( p ) (p)->root.funcs.skip_spaces( &(p)->root ) +#define T1_Skip_Alpha( p ) (p)->root.funcs.skip_alpha ( &(p)->root ) + +#define T1_ToInt( p ) (p)->root.funcs.to_int( &(p)->root ) +#define T1_ToFixed( p, t ) (p)->root.funcs.to_fixed( &(p)->root, t ) + +#define T1_ToCoordArray( p, m, c ) \ + (p)->root.funcs.to_coord_array( &(p)->root, m, c ) +#define T1_ToFixedArray( p, m, f, t ) \ + (p)->root.funcs.to_fixed_array( &(p)->root, m, f, t ) +#define T1_ToToken( p, t ) \ + (p)->root.funcs.to_token( &(p)->root, t ) +#define T1_ToTokenArray( p, t, m, c ) \ + (p)->root.funcs.to_token_array( &(p)->root, t, m, c ) + +#define T1_Load_Field( p, f, o, m, pf ) \ + (p)->root.funcs.load_field( &(p)->root, f, o, m, pf ) + +#define T1_Load_Field_Table( p, f, o, m, pf ) \ + (p)->root.funcs.load_field_table( &(p)->root, f, o, m, pf ) + + + FT_LOCAL( FT_Error ) + T1_New_Parser( T1_Parser parser, + FT_Stream stream, + FT_Memory memory, + PSAux_Service psaux ); + + FT_LOCAL( FT_Error ) + T1_Get_Private_Dict( T1_Parser parser, + PSAux_Service psaux ); + + FT_LOCAL( void ) + T1_Finalize_Parser( T1_Parser parser ); + + +FT_END_HEADER + +#endif /* __T1PARSE_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type1/t1tokens.h b/src/libs/freetype2/type1/t1tokens.h new file mode 100644 index 0000000000..5f5d8ceef6 --- /dev/null +++ b/src/libs/freetype2/type1/t1tokens.h @@ -0,0 +1,73 @@ +/***************************************************************************/ +/* */ +/* t1tokens.h */ +/* */ +/* Type 1 tokenizer (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#undef FT_STRUCTURE +#define FT_STRUCTURE PS_FontInfoRec +#undef T1CODE +#define T1CODE T1_FIELD_LOCATION_FONT_INFO + + T1_FIELD_STRING ( "version", version ) + T1_FIELD_STRING ( "Notice", notice ) + T1_FIELD_STRING ( "FullName", full_name ) + T1_FIELD_STRING ( "FamilyName", family_name ) + T1_FIELD_STRING ( "Weight", weight ) + + T1_FIELD_NUM ( "ItalicAngle", italic_angle ) + T1_FIELD_TYPE_BOOL( "isFixedPitch", is_fixed_pitch ) + T1_FIELD_NUM ( "UnderlinePosition", underline_position ) + T1_FIELD_NUM ( "UnderlineThickness", underline_thickness ) + + +#undef FT_STRUCTURE +#define FT_STRUCTURE PS_PrivateRec +#undef T1CODE +#define T1CODE T1_FIELD_LOCATION_PRIVATE + + T1_FIELD_NUM ( "UniqueID", unique_id ) + T1_FIELD_NUM ( "lenIV", lenIV ) + T1_FIELD_NUM ( "LanguageGroup", language_group ) + T1_FIELD_NUM ( "password", password ) + + T1_FIELD_FIXED ( "BlueScale", blue_scale ) + T1_FIELD_NUM ( "BlueShift", blue_shift ) + T1_FIELD_NUM ( "BlueFuzz", blue_fuzz ) + + T1_FIELD_NUM_TABLE ( "BlueValues", blue_values, 14 ) + T1_FIELD_NUM_TABLE ( "OtherBlues", other_blues, 10 ) + T1_FIELD_NUM_TABLE ( "FamilyBlues", family_blues, 14 ) + T1_FIELD_NUM_TABLE ( "FamilyOtherBlues", family_other_blues, 10 ) + + T1_FIELD_NUM_TABLE2( "StdHW", standard_width, 1 ) + T1_FIELD_NUM_TABLE2( "StdVW", standard_height, 1 ) + T1_FIELD_NUM_TABLE2( "MinFeature", min_feature, 2 ) + + T1_FIELD_NUM_TABLE ( "StemSnapH", snap_widths, 12 ) + T1_FIELD_NUM_TABLE ( "StemSnapV", snap_heights, 12 ) + + +#undef FT_STRUCTURE +#define FT_STRUCTURE T1_FontRec +#undef T1CODE +#define T1CODE T1_FIELD_LOCATION_FONT_DICT + + T1_FIELD_NUM( "PaintType", paint_type ) + T1_FIELD_NUM( "FontType", font_type ) + T1_FIELD_NUM( "StrokeWidth", stroke_width ) + + +/* END */ diff --git a/src/libs/freetype2/type1/type1.c b/src/libs/freetype2/type1/type1.c new file mode 100644 index 0000000000..ccc12be103 --- /dev/null +++ b/src/libs/freetype2/type1/type1.c @@ -0,0 +1,33 @@ +/***************************************************************************/ +/* */ +/* type1.c */ +/* */ +/* FreeType Type 1 driver component (body only). */ +/* */ +/* Copyright 1996-2001 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#define FT_MAKE_OPTION_SINGLE_OBJECT + +#include +#include "t1parse.c" +#include "t1load.c" +#include "t1objs.c" +#include "t1driver.c" +#include "t1gload.c" + +#ifndef T1_CONFIG_OPTION_NO_AFM +#include "t1afm.c" +#endif + + +/* END */ diff --git a/src/libs/freetype2/type42/Jamfile b/src/libs/freetype2/type42/Jamfile new file mode 100644 index 0000000000..e133e6d865 --- /dev/null +++ b/src/libs/freetype2/type42/Jamfile @@ -0,0 +1,23 @@ +# FreeType 2 src/type42 Jamfile (c) 2002 David Turner +# + +SubDir FT2_TOP src type42 ; + +SubDirHdrs [ FT2_SubDir src type42 ] ; + +{ + local _sources ; + + if $(FT2_MULTI) + { + _sources = t42objs t42parse t42drivr ; + } + else + { + _sources = type42 ; + } + + Library $(FT2_LIB) : $(_sources).c ; +} + +# end of src/type42 Jamfile diff --git a/src/libs/freetype2/type42/descrip.mms b/src/libs/freetype2/type42/descrip.mms new file mode 100644 index 0000000000..a52ba06fb0 --- /dev/null +++ b/src/libs/freetype2/type42/descrip.mms @@ -0,0 +1,23 @@ +# +# FreeType 2 Type 42 driver compilation rules for VMS +# + + +# Copyright 2002 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +CFLAGS=$(COMP_FLAGS)$(DEBUG)/include=([--.include],[--.src.type42]) + +OBJS=type42.obj + +all : $(OBJS) + library [--.lib]freetype.olb $(OBJS) + +# EOF diff --git a/src/libs/freetype2/type42/module.mk b/src/libs/freetype2/type42/module.mk new file mode 100644 index 0000000000..ceaea41b08 --- /dev/null +++ b/src/libs/freetype2/type42/module.mk @@ -0,0 +1,22 @@ +# +# FreeType 2 Type42 module definition +# + + +# Copyright 2002 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +make_module_list: add_type42_driver + +add_type42_driver: + $(OPEN_DRIVER)t42_driver_class$(CLOSE_DRIVER) + $(ECHO_DRIVER)type42 $(ECHO_DRIVER_DESC)Type 42 font files with no known extension$(ECHO_DRIVER_DONE) + +# EOF diff --git a/src/libs/freetype2/type42/rules.mk b/src/libs/freetype2/type42/rules.mk new file mode 100644 index 0000000000..f991449f5f --- /dev/null +++ b/src/libs/freetype2/type42/rules.mk @@ -0,0 +1,69 @@ +# +# FreeType 2 Type42 driver configuration rules +# + + +# Copyright 2002 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +# Type42 driver directory +# +T42_DIR := $(SRC_)type42 +T42_DIR_ := $(T42_DIR)$(SEP) + + +# compilation flags for the driver +# +T42_COMPILE := $(FT_COMPILE) $I$(T42_DIR) + + +# Type42 driver source +# +T42_DRV_SRC := $(T42_DIR_)t42objs.c \ + $(T42_DIR_)t42parse.c \ + $(T42_DIR_)t42drivr.c + +# Type42 driver headers +# +T42_DRV_H := $(T42_DRV_SRC:%.c=%.h) \ + $(T42_DIR_)t42error.h + + +# Type42 driver object(s) +# +# T42_DRV_OBJ_M is used during `multi' builds +# T42_DRV_OBJ_S is used during `single' builds +# +T42_DRV_OBJ_M := $(T42_DRV_SRC:$(T42_DIR_)%.c=$(OBJ_)%.$O) +T42_DRV_OBJ_S := $(OBJ_)type42.$O + +# Type42 driver source file for single build +# +T42_DRV_SRC_S := $(T42_DIR_)type42.c + + +# Type42 driver - single object +# +$(T42_DRV_OBJ_S): $(T42_DRV_SRC_S) $(T42_DRV_SRC) $(FREETYPE_H) $(T42_DRV_H) + $(T42_COMPILE) $T$@ $(T42_DRV_SRC_S) + + +# Type42 driver - multiple objects +# +$(OBJ_)%.$O: $(T42_DIR_)%.c $(FREETYPE_H) $(T42_DRV_H) + $(T42_COMPILE) $T$@ $< + + +# update main driver object lists +# +DRV_OBJS_S += $(T42_DRV_OBJ_S) +DRV_OBJS_M += $(T42_DRV_OBJ_M) + +# EOF diff --git a/src/libs/freetype2/type42/t42drivr.c b/src/libs/freetype2/type42/t42drivr.c new file mode 100644 index 0000000000..a053318513 --- /dev/null +++ b/src/libs/freetype2/type42/t42drivr.c @@ -0,0 +1,172 @@ +/***************************************************************************/ +/* */ +/* t42drivr.c */ +/* */ +/* High-level Type 42 driver interface (body). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* This driver implements Type42 fonts as described in the */ + /* Technical Note #5012 from Adobe, with these limitations: */ + /* */ + /* 1) CID Fonts are not currently supported. */ + /* 2) Incremental fonts making use of the GlyphDirectory keyword */ + /* will be loaded, but the rendering will be using the TrueType */ + /* tables. */ + /* 3) The sfnts array is expected to be ASCII, not binary. */ + /* 4) As for Type1 fonts, CDevProc is not supported. */ + /* 5) The Metrics dictionary is not supported. */ + /* 6) AFM metrics are not supported. */ + /* */ + /* In other words, this driver supports Type42 fonts derived from */ + /* TrueType fonts in a non-CID manner, as done by usual conversion */ + /* programs. */ + /* */ + /*************************************************************************/ + + +#include "t42drivr.h" +#include "t42objs.h" +#include "t42error.h" +#include FT_INTERNAL_DEBUG_H + + +#undef FT_COMPONENT +#define FT_COMPONENT trace_t42 + + + static FT_Error + t42_get_glyph_name( T42_Face face, + FT_UInt glyph_index, + FT_Pointer buffer, + FT_UInt buffer_max ) + { + FT_String* gname; + + + gname = face->type1.glyph_names[glyph_index]; + + if ( buffer_max > 0 ) + { + FT_UInt len = (FT_UInt)( ft_strlen( gname ) ); + + + if ( len >= buffer_max ) + len = buffer_max - 1; + + FT_MEM_COPY( buffer, gname, len ); + ((FT_Byte*)buffer)[len] = 0; + } + + return T42_Err_Ok; + } + + + static const char* + t42_get_ps_name( T42_Face face ) + { + return (const char*)face->type1.font_name; + } + + + static FT_UInt + t42_get_name_index( T42_Face face, + FT_String* glyph_name ) + { + FT_Int i; + FT_String* gname; + + + for ( i = 0; i < face->type1.num_glyphs; i++ ) + { + gname = face->type1.glyph_names[i]; + + if ( !ft_strcmp( glyph_name, gname ) ) + return ft_atoi( (const char *)face->type1.charstrings[i] ); + } + + return 0; + } + + + static FT_Module_Interface + T42_Get_Interface( FT_Driver driver, + const FT_String* t42_interface ) + { + FT_UNUSED( driver ); + + /* Any additional interface are defined here */ + if (ft_strcmp( (const char*)t42_interface, "glyph_name" ) == 0 ) + return (FT_Module_Interface)t42_get_glyph_name; + + if ( ft_strcmp( (const char*)t42_interface, "name_index" ) == 0 ) + return (FT_Module_Interface)t42_get_name_index; + + if ( ft_strcmp( (const char*)t42_interface, "postscript_name" ) == 0 ) + return (FT_Module_Interface)t42_get_ps_name; + + return 0; + } + + + const FT_Driver_ClassRec t42_driver_class = + { + { + ft_module_font_driver | + ft_module_driver_scalable | +#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER + ft_module_driver_has_hinter, +#else + 0, +#endif + + sizeof ( T42_DriverRec ), + + "type42", + 0x10000L, + 0x20000L, + + 0, /* format interface */ + + (FT_Module_Constructor)T42_Driver_Init, + (FT_Module_Destructor) T42_Driver_Done, + (FT_Module_Requester) T42_Get_Interface, + }, + + sizeof ( T42_FaceRec ), + sizeof ( T42_SizeRec ), + sizeof ( T42_GlyphSlotRec ), + + (FT_Face_InitFunc) T42_Face_Init, + (FT_Face_DoneFunc) T42_Face_Done, + (FT_Size_InitFunc) T42_Size_Init, + (FT_Size_DoneFunc) T42_Size_Done, + (FT_Slot_InitFunc) T42_GlyphSlot_Init, + (FT_Slot_DoneFunc) T42_GlyphSlot_Done, + + (FT_Size_ResetPointsFunc) T42_Size_SetChars, + (FT_Size_ResetPixelsFunc) T42_Size_SetPixels, + (FT_Slot_LoadFunc) T42_GlyphSlot_Load, + (FT_CharMap_CharIndexFunc)T42_CMap_CharIndex, + + (FT_Face_GetKerningFunc) 0, + (FT_Face_AttachFunc) 0, + + (FT_Face_GetAdvancesFunc) 0, + + (FT_CharMap_CharNextFunc) T42_CMap_CharNext, + }; + + +/* END */ diff --git a/src/libs/freetype2/type42/t42drivr.h b/src/libs/freetype2/type42/t42drivr.h new file mode 100644 index 0000000000..98b7410b67 --- /dev/null +++ b/src/libs/freetype2/type42/t42drivr.h @@ -0,0 +1,38 @@ +/***************************************************************************/ +/* */ +/* t42drivr.h */ +/* */ +/* High-level Type 42 driver interface (specification). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T42DRIVR_H__ +#define __T42DRIVR_H__ + + +#include +#include FT_INTERNAL_DRIVER_H + + +FT_BEGIN_HEADER + + + FT_EXPORT_VAR( const FT_Driver_ClassRec ) t42_driver_class; + + +FT_END_HEADER + + +#endif /* __T42DRIVR_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type42/t42error.h b/src/libs/freetype2/type42/t42error.h new file mode 100644 index 0000000000..cb6642b747 --- /dev/null +++ b/src/libs/freetype2/type42/t42error.h @@ -0,0 +1,40 @@ +/***************************************************************************/ +/* */ +/* t42error.h */ +/* */ +/* Type 42 error codes (specification only). */ +/* */ +/* Copyright 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* This file is used to define the Type 42 error enumeration constants. */ + /* */ + /*************************************************************************/ + +#ifndef __T42ERROR_H__ +#define __T42ERROR_H__ + +#include FT_MODULE_ERRORS_H + +#undef __FTERRORS_H__ + +#define FT_ERR_PREFIX T42_Err_ +#define FT_ERR_BASE FT_Mod_Err_T42 + +#include FT_ERRORS_H + +#endif /* __T42ERROR_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type42/t42objs.c b/src/libs/freetype2/type42/t42objs.c new file mode 100644 index 0000000000..7e90cfc50e --- /dev/null +++ b/src/libs/freetype2/type42/t42objs.c @@ -0,0 +1,919 @@ +/***************************************************************************/ +/* */ +/* t42objs.c */ +/* */ +/* Type 42 objects manager (body). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include "t42objs.h" +#include "t42parse.h" +#include "t42error.h" +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_LIST_H + + +#undef FT_COMPONENT +#define FT_COMPONENT trace_t42 + + + static FT_Error + T42_Open_Face( T42_Face face ) + { + T42_LoaderRec loader; + T42_Parser parser; + T1_Font type1 = &face->type1; + FT_Memory memory = face->root.memory; + FT_Error error; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + t42_loader_init( &loader, face ); + + parser = &loader.parser; + + if ( FT_ALLOC( face->ttf_data, 12 ) ) + goto Exit; + + error = t42_parser_init( parser, + face->root.stream, + memory, + psaux); + if ( error ) + goto Exit; + + error = t42_parse_dict( face, &loader, parser->base_dict, parser->base_len ); + + if ( type1->font_type != 42 ) + { + error = T42_Err_Unknown_File_Format; + goto Exit; + } + + /* now, propagate the charstrings and glyphnames tables */ + /* to the Type1 data */ + type1->num_glyphs = loader.num_glyphs; + + if ( !loader.charstrings.init ) { + FT_ERROR(( "T42_Open_Face: no charstrings array in face!\n" )); + error = T42_Err_Invalid_File_Format; + } + + loader.charstrings.init = 0; + type1->charstrings_block = loader.charstrings.block; + type1->charstrings = loader.charstrings.elements; + type1->charstrings_len = loader.charstrings.lengths; + + /* we copy the glyph names `block' and `elements' fields; */ + /* the `lengths' field must be released later */ + type1->glyph_names_block = loader.glyph_names.block; + type1->glyph_names = (FT_String**)loader.glyph_names.elements; + loader.glyph_names.block = 0; + loader.glyph_names.elements = 0; + + /* we must now build type1.encoding when we have a custom array */ + if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY ) + { + FT_Int charcode, idx, min_char, max_char; + FT_Byte* char_name; + FT_Byte* glyph_name; + + + /* OK, we do the following: for each element in the encoding */ + /* table, look up the index of the glyph having the same name */ + /* as defined in the CharStrings array. */ + /* The index is then stored in type1.encoding.char_index, and */ + /* the name in type1.encoding.char_name */ + + min_char = +32000; + max_char = -32000; + + charcode = 0; + for ( ; charcode < loader.encoding_table.max_elems; charcode++ ) + { + type1->encoding.char_index[charcode] = 0; + type1->encoding.char_name [charcode] = (char *)".notdef"; + + char_name = loader.encoding_table.elements[charcode]; + if ( char_name ) + for ( idx = 0; idx < type1->num_glyphs; idx++ ) + { + glyph_name = (FT_Byte*)type1->glyph_names[idx]; + if ( ft_strcmp( (const char*)char_name, + (const char*)glyph_name ) == 0 ) + { + type1->encoding.char_index[charcode] = (FT_UShort)idx; + type1->encoding.char_name [charcode] = (char*)glyph_name; + + /* Change min/max encoded char only if glyph name is */ + /* not /.notdef */ + if ( ft_strcmp( (const char*)".notdef", + (const char*)glyph_name ) != 0 ) + { + if ( charcode < min_char ) min_char = charcode; + if ( charcode > max_char ) max_char = charcode; + } + break; + } + } + } + type1->encoding.code_first = min_char; + type1->encoding.code_last = max_char; + type1->encoding.num_chars = loader.num_chars; + } + + Exit: + t42_loader_done( &loader ); + return error; + } + + + /***************** Driver Functions *************/ + + + FT_LOCAL_DEF( FT_Error ) + T42_Face_Init( FT_Stream stream, + T42_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params) + { + FT_Error error; + PSNames_Service psnames; + PSAux_Service psaux; + FT_Face root = (FT_Face)&face->root; + + FT_UNUSED( num_params ); + FT_UNUSED( params ); + FT_UNUSED( face_index ); + FT_UNUSED( stream ); + + + face->ttf_face = NULL; + face->root.num_faces = 1; + + face->psnames = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), + "psnames" ); + psnames = (PSNames_Service)face->psnames; + + face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), + "psaux" ); + psaux = (PSAux_Service)face->psaux; + + /* open the tokenizer, this will also check the font format */ + error = T42_Open_Face( face ); + if ( error ) + goto Exit; + + /* if we just wanted to check the format, leave successfully now */ + if ( face_index < 0 ) + goto Exit; + + /* check the face index */ + if ( face_index != 0 ) + { + FT_ERROR(( "T42_Face_Init: invalid face index\n" )); + error = T42_Err_Invalid_Argument; + goto Exit; + } + + /* Now, load the font program into the face object */ + + /* Init the face object fields */ + /* Now set up root face fields */ + + root->num_glyphs = face->type1.num_glyphs; + root->num_charmaps = 0; + root->face_index = face_index; + + root->face_flags = FT_FACE_FLAG_SCALABLE; + root->face_flags |= FT_FACE_FLAG_HORIZONTAL; + root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; + + if ( face->type1.font_info.is_fixed_pitch ) + root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; + + /* XXX: TODO -- add kerning with .afm support */ + + /* get style name -- be careful, some broken fonts only */ + /* have a `/FontName' dictionary entry! */ + root->family_name = face->type1.font_info.family_name; + if ( root->family_name ) + { + char* full = face->type1.font_info.full_name; + char* family = root->family_name; + + + if ( full ) + { + while ( *family && *full == *family ) + { + family++; + full++; + } + + root->style_name = ( *full == ' ' ? full + 1 + : (char *)"Regular" ); + } + else + root->style_name = (char *)"Regular"; + } + else + { + /* do we have a `/FontName'? */ + if ( face->type1.font_name ) + { + root->family_name = face->type1.font_name; + root->style_name = (char *)"Regular"; + } + } + + /* no embedded bitmap support */ + root->num_fixed_sizes = 0; + root->available_sizes = 0; + + /* Load the TTF font embedded in the T42 font */ + error = FT_New_Memory_Face( FT_FACE_LIBRARY( face ), + face->ttf_data, + face->ttf_size, + 0, + &face->ttf_face ); + if ( error ) + goto Exit; + + FT_Done_Size( face->ttf_face->size ); + + /* Ignore info in FontInfo dictionary and use the info from the */ + /* loaded TTF font. The PostScript interpreter also ignores it. */ + root->bbox = face->ttf_face->bbox; + root->units_per_EM = face->ttf_face->units_per_EM; + + root->ascender = face->ttf_face->ascender; + root->descender = face->ttf_face->descender; + root->height = face->ttf_face->height; + + root->max_advance_width = face->ttf_face->max_advance_width; + root->max_advance_height = face->ttf_face->max_advance_height; + + root->underline_position = face->type1.font_info.underline_position; + root->underline_thickness = face->type1.font_info.underline_thickness; + + root->internal->max_points = 0; + root->internal->max_contours = 0; + + /* compute style flags */ + root->style_flags = 0; + if ( face->type1.font_info.italic_angle ) + root->style_flags |= FT_STYLE_FLAG_ITALIC; + + if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD ) + root->style_flags |= FT_STYLE_FLAG_BOLD; + + if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL ) + root->face_flags |= FT_FACE_FLAG_VERTICAL; + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + + { + if ( psnames && psaux ) + { + FT_CharMapRec charmap; + T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes; + FT_CMap_Class clazz; + + + charmap.face = root; + + /* first of all, try to synthetize a Unicode charmap */ + charmap.platform_id = 3; + charmap.encoding_id = 1; + charmap.encoding = ft_encoding_unicode; + + FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL ); + + /* now, generate an Adobe Standard encoding when appropriate */ + charmap.platform_id = 7; + clazz = NULL; + + switch ( face->type1.encoding_type ) + { + case T1_ENCODING_TYPE_STANDARD: + charmap.encoding = ft_encoding_adobe_standard; + charmap.encoding_id = 0; + clazz = cmap_classes->standard; + break; + + case T1_ENCODING_TYPE_EXPERT: + charmap.encoding = ft_encoding_adobe_expert; + charmap.encoding_id = 1; + clazz = cmap_classes->expert; + break; + + case T1_ENCODING_TYPE_ARRAY: + charmap.encoding = ft_encoding_adobe_custom; + charmap.encoding_id = 2; + clazz = cmap_classes->custom; + break; + + case T1_ENCODING_TYPE_ISOLATIN1: + charmap.encoding = ft_encoding_latin_1; + charmap.encoding_id = 3; + clazz = cmap_classes->unicode; + break; + + default: + ; + } + + if ( clazz ) + FT_CMap_New( clazz, NULL, &charmap, NULL ); + + /* Select default charmap */ + if (root->num_charmaps) + root->charmap = root->charmaps[0]; + } + } + +#else /* !FT_CONFIG_OPTION_USE_CMAPS */ + + /* charmap support -- synthetize unicode charmap if possible */ + { + FT_CharMap charmap = face->charmaprecs; + + + /* synthesize a Unicode charmap if there is support in the `PSNames' */ + /* module */ + if ( psnames && psnames->unicode_value ) + { + error = psnames->build_unicodes( root->memory, + face->type1.num_glyphs, + (const char**)face->type1.glyph_names, + &face->unicode_map ); + if ( !error ) + { + root->charmap = charmap; + charmap->face = (FT_Face)face; + charmap->encoding = ft_encoding_unicode; + charmap->platform_id = 3; + charmap->encoding_id = 1; + charmap++; + } + + /* XXX: Is the following code correct? It is used in t1objs.c */ + + /* simply clear the error in case of failure (which really) */ + /* means that out of memory or no unicode glyph names */ + error = T42_Err_Ok; + } + + /* now, support either the standard, expert, or custom encoding */ + charmap->face = (FT_Face)face; + charmap->platform_id = 7; /* a new platform id for Adobe fonts? */ + + switch ( face->type1.encoding_type ) + { + case T1_ENCODING_TYPE_STANDARD: + charmap->encoding = ft_encoding_adobe_standard; + charmap->encoding_id = 0; + break; + + case T1_ENCODING_TYPE_EXPERT: + charmap->encoding = ft_encoding_adobe_expert; + charmap->encoding_id = 1; + break; + + case T1_ENCODING_TYPE_ARRAY: + charmap->encoding = ft_encoding_adobe_custom; + charmap->encoding_id = 2; + break; + + case T1_ENCODING_TYPE_ISOLATIN1: + charmap->encoding = ft_encoding_latin_1; + charmap->encoding_id = 3; + break; + + default: + FT_ERROR(( "T42_Face_Init: invalid encoding\n" )); + error = T42_Err_Invalid_File_Format; + goto Exit; + } + + root->charmaps = face->charmaps; + root->num_charmaps = charmap - face->charmaprecs + 1; + face->charmaps[0] = &face->charmaprecs[0]; + face->charmaps[1] = &face->charmaprecs[1]; + } + +#endif /* !FT_CONFIG_OPTION_USE_CMAPS */ + + Exit: + return error; + } + + + FT_LOCAL_DEF( void ) + T42_Face_Done( T42_Face face ) + { + T1_Font type1; + PS_FontInfo info; + FT_Memory memory; + + + if ( face ) + { + type1 = &face->type1; + info = &type1->font_info; + memory = face->root.memory; + + /* delete internal ttf face prior to freeing face->ttf_data */ + if ( face->ttf_face ) + FT_Done_Face( face->ttf_face ); + + /* release font info strings */ + FT_FREE( info->version ); + FT_FREE( info->notice ); + FT_FREE( info->full_name ); + FT_FREE( info->family_name ); + FT_FREE( info->weight ); + + /* release top dictionary */ + FT_FREE( type1->charstrings_len ); + FT_FREE( type1->charstrings ); + FT_FREE( type1->glyph_names ); + + FT_FREE( type1->charstrings_block ); + FT_FREE( type1->glyph_names_block ); + + FT_FREE( type1->encoding.char_index ); + FT_FREE( type1->encoding.char_name ); + FT_FREE( type1->font_name ); + + FT_FREE( face->ttf_data ); + +#if 0 + /* release afm data if present */ + if ( face->afm_data ) + T1_Done_AFM( memory, (T1_AFM*)face->afm_data ); +#endif + + /* release unicode map, if any */ + FT_FREE( face->unicode_map.maps ); + face->unicode_map.num_maps = 0; + + face->root.family_name = 0; + face->root.style_name = 0; + } + } + + + /*************************************************************************/ + /* */ + /* */ + /* T42_Driver_Init */ + /* */ + /* */ + /* Initializes a given Type 42 driver object. */ + /* */ + /* */ + /* driver :: A handle to the target driver object. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_LOCAL_DEF( FT_Error ) + T42_Driver_Init( T42_Driver driver ) + { + FT_Module ttmodule; + + + ttmodule = FT_Get_Module( FT_MODULE(driver)->library, "truetype" ); + driver->ttclazz = (FT_Driver_Class)ttmodule->clazz; + + return T42_Err_Ok; + } + + + FT_LOCAL_DEF( void ) + T42_Driver_Done( T42_Driver driver ) + { + FT_UNUSED( driver ); + } + + + FT_LOCAL_DEF( FT_UInt ) + T42_CMap_CharIndex( FT_CharMap charmap, + FT_Long charcode ) + { + T42_Face face; + FT_UInt result = 0; + PSNames_Service psnames; + + + face = (T42_Face)charmap->face; + psnames = (PSNames_Service)face->psnames; + if (!psnames ) + goto Exit; + + switch ( charmap->encoding ) + { + /*******************************************************************/ + /* */ + /* Unicode encoding support */ + /* */ + case ft_encoding_unicode: + /* if this charmap is used, we ignore the encoding of the font and */ + /* use the `PSNames' module to synthetize the Unicode charmap */ + result = psnames->lookup_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /* the function returns 0xFFFF if the Unicode charcode has */ + /* no corresponding glyph */ + if ( result == 0xFFFFU ) + result = 0; + + /* The result returned is the index (position)in the CharStrings */ + /* array. This must be used now to get the value associated to */ + /* that glyph_name, which is the real index within the truetype */ + /* structure. */ + result = ft_atoi( (const char*)face->type1.charstrings[result] ); + goto Exit; + + /*******************************************************************/ + /* */ + /* ISOLatin1 encoding support */ + /* */ + case ft_encoding_latin_1: + /* ISOLatin1 is the first page of Unicode */ + if ( charcode < 256 && psnames->unicode_value ) + { + result = psnames->lookup_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /* the function returns 0xFFFF if the Unicode charcode has */ + /* no corresponding glyph */ + if ( result == 0xFFFFU ) + result = 0; + } + goto Exit; + + /*******************************************************************/ + /* */ + /* Custom Type 1 encoding */ + /* */ + case ft_encoding_adobe_custom: + { + T1_Encoding encoding = &face->type1.encoding; + + + if ( charcode >= encoding->code_first && + charcode <= encoding->code_last ) + { + FT_UInt idx = encoding->char_index[charcode]; + + + result = ft_atoi( (const char *)face->type1.charstrings[idx] ); + } + goto Exit; + } + + /*******************************************************************/ + /* */ + /* Adobe Standard & Expert encoding support */ + /* */ + default: + if ( charcode < 256 ) + { + FT_UInt code; + FT_Int n; + const char* glyph_name; + + + code = psnames->adobe_std_encoding[charcode]; + if ( charmap->encoding == ft_encoding_adobe_expert ) + code = psnames->adobe_expert_encoding[charcode]; + + glyph_name = psnames->adobe_std_strings( code ); + if ( !glyph_name ) + break; + + for ( n = 0; n < face->type1.num_glyphs; n++ ) + { + const char* gname = face->type1.glyph_names[n]; + + if ( gname && ( ft_strcmp( gname, glyph_name ) == 0 ) ) + { + result = ft_atoi( (const char *)face->type1.charstrings[n] ); + break; + } + } + } + } + + Exit: + return result; + } + + + FT_LOCAL_DEF( FT_Error ) + T42_Size_Init( T42_Size size ) + { + FT_Face face = size->root.face; + T42_Face t42face = (T42_Face)face; + FT_Size ttsize; + FT_Error error = T42_Err_Ok; + + + error = FT_New_Size( t42face->ttf_face, &ttsize ); + size->ttsize = ttsize; + + FT_Activate_Size( ttsize ); + + return error; + } + + + FT_LOCAL_DEF( void ) + T42_Size_Done( T42_Size size ) + { + FT_Face face = size->root.face; + T42_Face t42face = (T42_Face)face; + FT_ListNode node; + + + node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize ); + if ( node ) + { + FT_Done_Size( size->ttsize ); + size->ttsize = NULL; + } + } + + + FT_LOCAL_DEF( FT_Error ) + T42_GlyphSlot_Init( T42_GlyphSlot slot ) + { + FT_Face face = slot->root.face; + T42_Face t42face = (T42_Face)face; + FT_GlyphSlot ttslot; + FT_Error error = T42_Err_Ok; + + + if ( face->glyph == NULL ) + { + /* First glyph slot for this face */ + slot->ttslot = t42face->ttf_face->glyph; + } + else + { + error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot ); + slot->ttslot = ttslot; + } + + return error; + } + + + FT_LOCAL_DEF( void ) + T42_GlyphSlot_Done( T42_GlyphSlot slot ) + { + FT_Face face = slot->root.face; + T42_Face t42face = (T42_Face)face; + FT_GlyphSlot cur = t42face->ttf_face->glyph; + + + while ( cur ) + { + if ( cur == slot->ttslot ) + { + FT_Done_GlyphSlot( slot->ttslot ); + break; + } + + cur = cur->next; + } + } + + + + FT_LOCAL_DEF( FT_Error ) + T42_Size_SetChars( T42_Size size, + FT_F26Dot6 char_width, + FT_F26Dot6 char_height, + FT_UInt horz_resolution, + FT_UInt vert_resolution ) + { + FT_Face face = size->root.face; + T42_Face t42face = (T42_Face)face; + + + FT_Activate_Size(size->ttsize); + + return FT_Set_Char_Size( t42face->ttf_face, + char_width, + char_height, + horz_resolution, + vert_resolution ); + } + + + FT_LOCAL_DEF( FT_Error ) + T42_Size_SetPixels( T42_Size size, + FT_UInt pixel_width, + FT_UInt pixel_height ) + { + FT_Face face = size->root.face; + T42_Face t42face = (T42_Face)face; + + + FT_Activate_Size(size->ttsize); + + return FT_Set_Pixel_Sizes( t42face->ttf_face, + pixel_width, + pixel_height ); + } + + + static void + ft_glyphslot_clear( FT_GlyphSlot slot ) + { + /* free bitmap if needed */ + if ( slot->flags & FT_GLYPH_OWN_BITMAP ) + { + FT_Memory memory = FT_FACE_MEMORY( slot->face ); + + + FT_FREE( slot->bitmap.buffer ); + slot->flags &= ~FT_GLYPH_OWN_BITMAP; + } + + /* clear all public fields in the glyph slot */ + FT_ZERO( &slot->metrics ); + FT_ZERO( &slot->outline ); + FT_ZERO( &slot->bitmap ); + + slot->bitmap_left = 0; + slot->bitmap_top = 0; + slot->num_subglyphs = 0; + slot->subglyphs = 0; + slot->control_data = 0; + slot->control_len = 0; + slot->other = 0; + slot->format = ft_glyph_format_none; + + slot->linearHoriAdvance = 0; + slot->linearVertAdvance = 0; + } + + + FT_LOCAL_DEF( FT_Error ) + T42_GlyphSlot_Load( FT_GlyphSlot glyph, + FT_Size size, + FT_Int glyph_index, + FT_Int load_flags ) + { + FT_Error error; + T42_GlyphSlot t42slot = (T42_GlyphSlot)glyph; + T42_Size t42size = (T42_Size)size; + FT_Driver_Class ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz; + + + ft_glyphslot_clear( t42slot->ttslot ); + error = ttclazz->load_glyph( t42slot->ttslot, + t42size->ttsize, + glyph_index, + load_flags | FT_LOAD_NO_BITMAP ); + + if ( !error ) + { + glyph->metrics = t42slot->ttslot->metrics; + + glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance; + glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance; + + glyph->format = t42slot->ttslot->format; + glyph->outline = t42slot->ttslot->outline; + + glyph->bitmap = t42slot->ttslot->bitmap; + glyph->bitmap_left = t42slot->ttslot->bitmap_left; + glyph->bitmap_top = t42slot->ttslot->bitmap_top; + + glyph->num_subglyphs = t42slot->ttslot->num_subglyphs; + glyph->subglyphs = t42slot->ttslot->subglyphs; + + glyph->control_data = t42slot->ttslot->control_data; + glyph->control_len = t42slot->ttslot->control_len; + } + + return error; + } + + + + FT_LOCAL_DEF( FT_Long ) + T42_CMap_CharNext( FT_CharMap charmap, + FT_Long charcode ) + { + T42_Face face; + PSNames_Service psnames; + + + face = (T42_Face)charmap->face; + psnames = (PSNames_Service)face->psnames; + + if ( psnames ) + switch ( charmap->encoding ) + { + /*******************************************************************/ + /* */ + /* Unicode encoding support */ + /* */ + case ft_encoding_unicode: + /* use the `PSNames' module to synthetize the Unicode charmap */ + return psnames->next_unicode( &face->unicode_map, + (FT_ULong)charcode ); + + /*******************************************************************/ + /* */ + /* ISOLatin1 encoding support */ + /* */ + case ft_encoding_latin_1: + { + FT_ULong code; + + + /* use the `PSNames' module to synthetize the Unicode charmap */ + code = psnames->next_unicode( &face->unicode_map, + (FT_ULong)charcode ); + if ( code < 256 ) + return code; + break; + } + + /*******************************************************************/ + /* */ + /* Custom Type 1 encoding */ + /* */ + case ft_encoding_adobe_custom: + { + T1_Encoding encoding = &face->type1.encoding; + + + charcode++; + if ( charcode < encoding->code_first ) + charcode = encoding->code_first; + while ( charcode <= encoding->code_last ) { + if ( encoding->char_index[charcode] ) + return charcode; + charcode++; + } + } + + + /*******************************************************************/ + /* */ + /* Adobe Standard & Expert encoding support */ + /* */ + default: + while ( ++charcode < 256 ) + { + FT_UInt code; + FT_Int n; + const char* glyph_name; + + + code = psnames->adobe_std_encoding[charcode]; + if ( charmap->encoding == ft_encoding_adobe_expert ) + code = psnames->adobe_expert_encoding[charcode]; + + glyph_name = psnames->adobe_std_strings( code ); + if ( !glyph_name ) + continue; + + for ( n = 0; n < face->type1.num_glyphs; n++ ) + { + const char* gname = face->type1.glyph_names[n]; + + + if ( gname && gname[0] == glyph_name[0] && + ft_strcmp( gname, glyph_name ) == 0 ) + return charcode; + } + } + } + + return 0; + } + + +/* END */ diff --git a/src/libs/freetype2/type42/t42objs.h b/src/libs/freetype2/type42/t42objs.h new file mode 100644 index 0000000000..c6ce127669 --- /dev/null +++ b/src/libs/freetype2/type42/t42objs.h @@ -0,0 +1,135 @@ +/***************************************************************************/ +/* */ +/* t42objs.h */ +/* */ +/* Type 42 objects manager (specification). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T42OBJS_H__ +#define __T42OBJS_H__ + +#include +#include FT_FREETYPE_H +#include FT_TYPE1_TABLES_H +#include FT_INTERNAL_TYPE1_TYPES_H +#include FT_INTERNAL_TYPE42_TYPES_H +#include FT_INTERNAL_OBJECTS_H +#include FT_INTERNAL_DRIVER_H +#include FT_INTERNAL_POSTSCRIPT_NAMES_H +#include FT_INTERNAL_POSTSCRIPT_HINTS_H + + +FT_BEGIN_HEADER + + + /* Type42 size */ + typedef struct T42_SizeRec_ + { + FT_SizeRec root; + FT_Size ttsize; + + } T42_SizeRec, *T42_Size; + + + /* Type42 slot */ + typedef struct T42_GlyphSlotRec_ + { + FT_GlyphSlotRec root; + FT_GlyphSlot ttslot; + + } T42_GlyphSlotRec, *T42_GlyphSlot; + + + /* Type 42 driver */ + typedef struct T42_DriverRec_ + { + FT_DriverRec root; + FT_Driver_Class ttclazz; + void* extension_component; + + } T42_DriverRec, *T42_Driver; + + + /* */ + + + FT_LOCAL( FT_Error ) + T42_Face_Init( FT_Stream stream, + T42_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ); + + + FT_LOCAL( void ) + T42_Face_Done( T42_Face face ); + + + FT_LOCAL( FT_Error ) + T42_Size_Init( T42_Size size ); + + + FT_LOCAL( FT_Error ) + T42_Size_SetChars( T42_Size size, + FT_F26Dot6 char_width, + FT_F26Dot6 char_height, + FT_UInt horz_resolution, + FT_UInt vert_resolution ); + + FT_LOCAL( FT_Error ) + T42_Size_SetPixels( T42_Size size, + FT_UInt pixel_width, + FT_UInt pixel_height ); + + FT_LOCAL( void ) + T42_Size_Done( T42_Size size ); + + + FT_LOCAL( FT_Error ) + T42_GlyphSlot_Init( T42_GlyphSlot slot ); + + + FT_LOCAL( FT_Error ) + T42_GlyphSlot_Load( FT_GlyphSlot glyph, + FT_Size size, + FT_Int glyph_index, + FT_Int load_flags ); + + FT_LOCAL( void ) + T42_GlyphSlot_Done( T42_GlyphSlot slot ); + + + FT_LOCAL( FT_UInt ) + T42_CMap_CharIndex( FT_CharMap charmap, + FT_Long charcode ); + + FT_LOCAL( FT_Long ) + T42_CMap_CharNext( FT_CharMap charmap, + FT_Long charcode ); + + + FT_LOCAL( FT_Error ) + T42_Driver_Init( T42_Driver driver ); + + FT_LOCAL( void ) + T42_Driver_Done( T42_Driver driver ); + + /* */ + +FT_END_HEADER + + +#endif /* __T42OBJS_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type42/t42parse.c b/src/libs/freetype2/type42/t42parse.c new file mode 100644 index 0000000000..e28bcdb795 --- /dev/null +++ b/src/libs/freetype2/type42/t42parse.c @@ -0,0 +1,994 @@ +/***************************************************************************/ +/* */ +/* t42parse.c */ +/* */ +/* Type 42 font parser (body). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include "t42parse.h" +#include "t42error.h" +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_LIST_H +#include FT_INTERNAL_POSTSCRIPT_AUX_H + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_t42 + + + static void + t42_parse_font_name( T42_Face face, + T42_Loader loader ); + + static void + t42_parse_font_bbox( T42_Face face, + T42_Loader loader ); + + static void + t42_parse_font_matrix( T42_Face face, + T42_Loader loader ); + static void + t42_parse_encoding( T42_Face face, + T42_Loader loader ); + + static void + t42_parse_charstrings( T42_Face face, + T42_Loader loader ); + + static void + t42_parse_sfnts( T42_Face face, + T42_Loader loader ); + + + static const + T1_FieldRec t42_keywords[] = { + +#undef FT_STRUCTURE +#define FT_STRUCTURE T1_FontInfo +#undef T1CODE +#define T1CODE T1_FIELD_LOCATION_FONT_INFO + + T1_FIELD_STRING ( "version", version ) + T1_FIELD_STRING ( "Notice", notice ) + T1_FIELD_STRING ( "FullName", full_name ) + T1_FIELD_STRING ( "FamilyName", family_name ) + T1_FIELD_STRING ( "Weight", weight ) + T1_FIELD_NUM ( "ItalicAngle", italic_angle ) + T1_FIELD_TYPE_BOOL( "isFixedPitch", is_fixed_pitch ) + T1_FIELD_NUM ( "UnderlinePosition", underline_position ) + T1_FIELD_NUM ( "UnderlineThickness", underline_thickness ) + +#undef FT_STRUCTURE +#define FT_STRUCTURE T1_FontRec +#undef T1CODE +#define T1CODE T1_FIELD_LOCATION_FONT_DICT + + T1_FIELD_NUM( "PaintType", paint_type ) + T1_FIELD_NUM( "FontType", font_type ) + T1_FIELD_NUM( "StrokeWidth", stroke_width ) + + T1_FIELD_CALLBACK( "FontName", t42_parse_font_name ) + T1_FIELD_CALLBACK( "FontBBox", t42_parse_font_bbox ) + T1_FIELD_CALLBACK( "FontMatrix", t42_parse_font_matrix ) + T1_FIELD_CALLBACK( "Encoding", t42_parse_encoding ) + T1_FIELD_CALLBACK( "CharStrings", t42_parse_charstrings ) + T1_FIELD_CALLBACK( "sfnts", t42_parse_sfnts ) + + { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 } + }; + + +#define T1_Add_Table( p, i, o, l ) (p)->funcs.add( (p), i, o, l ) +#define T1_Done_Table( p ) \ + do \ + { \ + if ( (p)->funcs.done ) \ + (p)->funcs.done( p ); \ + } while ( 0 ) +#define T1_Release_Table( p ) \ + do \ + { \ + if ( (p)->funcs.release ) \ + (p)->funcs.release( p ); \ + } while ( 0 ) + +#define T1_Skip_Spaces( p ) (p)->root.funcs.skip_spaces( &(p)->root ) +#define T1_Skip_Alpha( p ) (p)->root.funcs.skip_alpha ( &(p)->root ) + +#define T1_ToInt( p ) (p)->root.funcs.to_int( &(p)->root ) +#define T1_ToFixed( p, t ) (p)->root.funcs.to_fixed( &(p)->root, t ) + +#define T1_ToCoordArray( p, m, c ) \ + (p)->root.funcs.to_coord_array( &(p)->root, m, c ) +#define T1_ToFixedArray( p, m, f, t ) \ + (p)->root.funcs.to_fixed_array( &(p)->root, m, f, t ) +#define T1_ToToken( p, t ) \ + (p)->root.funcs.to_token( &(p)->root, t ) +#define T1_ToTokenArray( p, t, m, c ) \ + (p)->root.funcs.to_token_array( &(p)->root, t, m, c ) + +#define T1_Load_Field( p, f, o, m, pf ) \ + (p)->root.funcs.load_field( &(p)->root, f, o, m, pf ) +#define T1_Load_Field_Table( p, f, o, m, pf ) \ + (p)->root.funcs.load_field_table( &(p)->root, f, o, m, pf ) + + + /********************* Parsing Functions ******************/ + + FT_LOCAL_DEF( FT_Error ) + t42_parser_init( T42_Parser parser, + FT_Stream stream, + FT_Memory memory, + PSAux_Service psaux ) + { + FT_Error error = T42_Err_Ok; + FT_Long size; + + + psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory ); + + parser->stream = stream; + parser->base_len = 0; + parser->base_dict = 0; + parser->in_memory = 0; + + /*******************************************************************/ + /* */ + /* Here a short summary of what is going on: */ + /* */ + /* When creating a new Type 42 parser, we try to locate and load */ + /* the base dictionary, loading the whole font into memory. */ + /* */ + /* When `loading' the base dictionary, we only setup pointers in */ + /* the case of a memory-based stream. Otherwise, we allocate */ + /* and load the base dictionary in it. */ + /* */ + /* parser->in_memory is set if we have a memory stream. */ + /* */ + + if ( FT_STREAM_SEEK( 0L ) ) + goto Exit; + + size = stream->size; + + /* now, try to load `size' bytes of the `base' dictionary we */ + /* found previously */ + + /* if it is a memory-based resource, set up pointers */ + if ( !stream->read ) + { + parser->base_dict = (FT_Byte*)stream->base + stream->pos; + parser->base_len = size; + parser->in_memory = 1; + + /* check that the `size' field is valid */ + if ( FT_STREAM_SKIP( size ) ) + goto Exit; + } + else + { + /* read segment in memory */ + if ( FT_ALLOC( parser->base_dict, size ) || + FT_STREAM_READ( parser->base_dict, size ) ) + goto Exit; + + parser->base_len = size; + } + + /* Now check font format; we must see `%!PS-TrueTypeFont' */ + if (size <= 17 || + ( ft_strncmp( (const char*)parser->base_dict, + "%!PS-TrueTypeFont", 17) ) ) + error = T42_Err_Unknown_File_Format; + else + { + parser->root.base = parser->base_dict; + parser->root.cursor = parser->base_dict; + parser->root.limit = parser->root.cursor + parser->base_len; + } + + Exit: + if ( error && !parser->in_memory ) + FT_FREE( parser->base_dict ); + + return error; + } + + + FT_LOCAL_DEF( void ) + t42_parser_done( T42_Parser parser ) + { + FT_Memory memory = parser->root.memory; + + + /* free the base dictionary only when we have a disk stream */ + if ( !parser->in_memory ) + FT_FREE( parser->base_dict ); + + parser->root.funcs.done( &parser->root ); + } + + + static int + t42_is_alpha( FT_Byte c ) + { + /* Note: we must accept "+" as a valid character, as it is used in */ + /* embedded type1 fonts in PDF documents. */ + /* */ + return ( ft_isalnum( c ) || + c == '.' || + c == '_' || + c == '-' || + c == '+' ); + } + + + static int + t42_is_space( FT_Byte c ) + { + return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' ); + } + + + static void + t42_parse_font_name( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + FT_Error error; + FT_Memory memory = parser->root.memory; + FT_Int len; + FT_Byte* cur; + FT_Byte* cur2; + FT_Byte* limit; + + + T1_Skip_Spaces( parser ); + + cur = parser->root.cursor; + limit = parser->root.limit; + + if ( cur >= limit - 1 || + ( *cur != '/' && *cur != '(') ) + return; + + cur++; + cur2 = cur; + while ( cur2 < limit && t42_is_alpha( *cur2 ) ) + cur2++; + + len = (FT_Int)( cur2 - cur ); + if ( len > 0 ) + { + if ( FT_ALLOC( face->type1.font_name, len + 1 ) ) + { + parser->root.error = error; + return; + } + + FT_MEM_COPY( face->type1.font_name, cur, len ); + face->type1.font_name[len] = '\0'; + } + parser->root.cursor = cur2; + } + + + static void + t42_parse_font_bbox( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + FT_BBox* bbox = &face->type1.font_bbox; + + bbox->xMin = T1_ToInt( parser ); + bbox->yMin = T1_ToInt( parser ); + bbox->xMax = T1_ToInt( parser ); + bbox->yMax = T1_ToInt( parser ); + } + + + static void + t42_parse_font_matrix( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + FT_Matrix* matrix = &face->type1.font_matrix; + FT_Vector* offset = &face->type1.font_offset; + FT_Face root = (FT_Face)&face->root; + FT_Fixed temp[6]; + FT_Fixed temp_scale; + + + (void)T1_ToFixedArray( parser, 6, temp, 3 ); + + temp_scale = ABS( temp[3] ); + + /* Set Units per EM based on FontMatrix values. We set the value to */ + /* 1000 / temp_scale, because temp_scale was already multiplied by */ + /* 1000 (in t1_tofixed, from psobjs.c). */ + + root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L, + temp_scale ) >> 16 ); + + /* we need to scale the values by 1.0/temp_scale */ + if ( temp_scale != 0x10000L ) { + temp[0] = FT_DivFix( temp[0], temp_scale ); + temp[1] = FT_DivFix( temp[1], temp_scale ); + temp[2] = FT_DivFix( temp[2], temp_scale ); + temp[4] = FT_DivFix( temp[4], temp_scale ); + temp[5] = FT_DivFix( temp[5], temp_scale ); + temp[3] = 0x10000L; + } + + matrix->xx = temp[0]; + matrix->yx = temp[1]; + matrix->xy = temp[2]; + matrix->yy = temp[3]; + + /* note that the offsets must be expressed in integer font units */ + offset->x = temp[4] >> 16; + offset->y = temp[5] >> 16; + } + + + static void + t42_parse_encoding( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + FT_Byte* cur = parser->root.cursor; + FT_Byte* limit = parser->root.limit; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + + /* skip whitespace */ + while ( t42_is_space( *cur ) ) + { + cur++; + if ( cur >= limit ) + { + FT_ERROR(( "t42_parse_encoding: out of bounds!\n" )); + parser->root.error = T42_Err_Invalid_File_Format; + return; + } + } + + /* if we have a number, then the encoding is an array, */ + /* and we must load it now */ + if ( (FT_Byte)( *cur - '0' ) < 10 ) + { + T1_Encoding encode = &face->type1.encoding; + FT_Int count, n; + PS_Table char_table = &loader->encoding_table; + FT_Memory memory = parser->root.memory; + FT_Error error; + + + /* read the number of entries in the encoding, should be 256 */ + count = T1_ToInt( parser ); + if ( parser->root.error ) + return; + + /* we use a T1_Table to store our charnames */ + loader->num_chars = encode->num_chars = count; + if ( FT_NEW_ARRAY( encode->char_index, count ) || + FT_NEW_ARRAY( encode->char_name, count ) || + FT_SET_ERROR( psaux->ps_table_funcs->init( + char_table, count, memory ) ) ) + { + parser->root.error = error; + return; + } + + /* We need to `zero' out encoding_table.elements */ + for ( n = 0; n < count; n++ ) + { + char* notdef = (char *)".notdef"; + + + T1_Add_Table( char_table, n, notdef, 8 ); + } + + /* Now, we will need to read a record of the form */ + /* ... charcode /charname ... for each entry in our table */ + /* */ + /* We simply look for a number followed by an immediate */ + /* name. Note that this ignores correctly the sequence */ + /* that is often seen in type1 fonts: */ + /* */ + /* 0 1 255 { 1 index exch /.notdef put } for dup */ + /* */ + /* used to clean the encoding array before anything else. */ + /* */ + /* We stop when we encounter a `def'. */ + + cur = parser->root.cursor; + limit = parser->root.limit; + n = 0; + + for ( ; cur < limit; ) + { + FT_Byte c; + + + c = *cur; + + /* we stop when we encounter a `def' */ + if ( c == 'd' && cur + 3 < limit ) + { + if ( cur[1] == 'e' && + cur[2] == 'f' && + t42_is_space( cur[-1] ) && + t42_is_space( cur[3] ) ) + { + FT_TRACE6(( "encoding end\n" )); + break; + } + } + + /* otherwise, we must find a number before anything else */ + if ( (FT_Byte)( c - '0' ) < 10 ) + { + FT_Int charcode; + + + parser->root.cursor = cur; + charcode = T1_ToInt( parser ); + cur = parser->root.cursor; + + /* skip whitespace */ + while ( cur < limit && t42_is_space( *cur ) ) + cur++; + + if ( cur < limit && *cur == '/' ) + { + /* bingo, we have an immediate name -- it must be a */ + /* character name */ + FT_Byte* cur2 = cur + 1; + FT_Int len; + + + while ( cur2 < limit && t42_is_alpha( *cur2 ) ) + cur2++; + + len = (FT_Int)( cur2 - cur - 1 ); + + parser->root.error = T1_Add_Table( char_table, charcode, + cur + 1, len + 1 ); + char_table->elements[charcode][len] = '\0'; + if ( parser->root.error ) + return; + + cur = cur2; + } + } + else + cur++; + } + + face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; + parser->root.cursor = cur; + } + /* Otherwise, we should have either `StandardEncoding', */ + /* `ExpertEncoding', or `ISOLatin1Encoding' */ + else + { + if ( cur + 17 < limit && + ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; + + else if ( cur + 15 < limit && + ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; + + else if ( cur + 18 < limit && + ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 ) + face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; + + else { + FT_ERROR(( "t42_parse_encoding: invalid token!\n" )); + parser->root.error = T42_Err_Invalid_File_Format; + } + } + } + + + static FT_UInt + t42_hexval( FT_Byte v ) + { + FT_UInt d; + + d = (FT_UInt)( v - 'A' ); + if ( d < 6 ) + { + d += 10; + goto Exit; + } + + d = (FT_UInt)( v - 'a' ); + if ( d < 6 ) + { + d += 10; + goto Exit; + } + + d = (FT_UInt)( v - '0' ); + if ( d < 10 ) + goto Exit; + + d = 0; + + Exit: + return d; + } + + + static void + t42_parse_sfnts( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + FT_Memory memory = parser->root.memory; + FT_Byte* cur = parser->root.cursor; + FT_Byte* limit = parser->root.limit; + FT_Error error; + FT_Int num_tables = 0, status; + FT_ULong count, ttf_size = 0, string_size = 0; + FT_Bool in_string = 0; + FT_Byte v = 0; + + + /* The format is `/sfnts [ <...> <...> ... ] def' */ + + while ( t42_is_space( *cur ) ) + cur++; + + if (*cur++ == '[') + { + status = 0; + count = 0; + } + else + { + FT_ERROR(( "t42_parse_sfnts: can't find begin of sfnts vector!\n" )); + error = T42_Err_Invalid_File_Format; + goto Fail; + } + + while ( cur < limit - 2 ) + { + while ( t42_is_space( *cur ) ) + cur++; + + switch ( *cur ) + { + case ']': + parser->root.cursor = cur++; + return; + + case '<': + in_string = 1; + string_size = 0; + cur++; + continue; + + case '>': + if ( !in_string ) + { + FT_ERROR(( "t42_parse_sfnts: found unpaired `>'!\n" )); + error = T42_Err_Invalid_File_Format; + goto Fail; + } + + /* A string can have, as a last byte, */ + /* a zero byte for padding. If so, ignore it */ + if ( ( v == 0 ) && ( string_size % 2 == 1 ) ) + count--; + in_string = 0; + cur++; + continue; + + case '%': + if ( !in_string ) + { + /* Comment found; skip till end of line */ + while ( *cur != '\n' ) + cur++; + continue; + } + else + { + FT_ERROR(( "t42_parse_sfnts: found `%' in string!\n" )); + error = T42_Err_Invalid_File_Format; + goto Fail; + } + + default: + if ( !ft_xdigit( *cur ) || !ft_xdigit( *(cur + 1) ) ) + { + FT_ERROR(( "t42_parse_sfnts: found non-hex characters in string" )); + error = T42_Err_Invalid_File_Format; + goto Fail; + } + + v = (FT_Byte)( 16 * t42_hexval( cur[0] ) + t42_hexval( cur[1] ) ); + cur += 2; + string_size++; + } + + switch ( status ) + { + case 0: /* The '[' was read, so load offset table, 12 bytes */ + if ( count < 12 ) + { + face->ttf_data[count++] = v; + continue; + } + else + { + num_tables = 16 * face->ttf_data[4] + face->ttf_data[5]; + status = 1; + ttf_size = 12 + 16 * num_tables; + + if ( FT_REALLOC( face->ttf_data, 12, ttf_size ) ) + goto Fail; + } + /* No break, fall-through */ + + case 1: /* The offset table is read; read now the table directory */ + if ( count < ttf_size ) + { + face->ttf_data[count++] = v; + continue; + } + else + { + int i; + FT_ULong len; + + + for ( i = 0; i < num_tables; i++ ) + { + FT_Byte* p = face->ttf_data + 12 + 16*i + 12; + + len = FT_PEEK_ULONG( p ); + + /* Pad to a 4-byte boundary length */ + ttf_size += ( len + 3 ) & ~3; + } + + status = 2; + face->ttf_size = ttf_size; + + if ( FT_REALLOC( face->ttf_data, 12 + 16 * num_tables, + ttf_size + 1 ) ) + goto Fail; + } + /* No break, fall-through */ + + case 2: /* We are reading normal tables; just swallow them */ + face->ttf_data[count++] = v; + + } + } + + /* If control reaches this point, the format was not valid */ + error = T42_Err_Invalid_File_Format; + + Fail: + parser->root.error = error; + } + + + static void + t42_parse_charstrings( T42_Face face, + T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + PS_Table code_table = &loader->charstrings; + PS_Table name_table = &loader->glyph_names; + FT_Memory memory = parser->root.memory; + FT_Error error; + + PSAux_Service psaux = (PSAux_Service)face->psaux; + + FT_Byte* cur; + FT_Byte* limit = parser->root.limit; + FT_Int n; + + + loader->num_glyphs = T1_ToInt( parser ); + if ( parser->root.error ) + return; + + /* initialize tables */ + + error = psaux->ps_table_funcs->init( code_table, + loader->num_glyphs, + memory ); + if ( error ) + goto Fail; + + error = psaux->ps_table_funcs->init( name_table, + loader->num_glyphs, + memory ); + if ( error ) + goto Fail; + + n = 0; + + for (;;) + { + /* the format is simple: */ + /* `/glyphname' + index + def */ + /* */ + /* note that we stop when we find an `end' */ + /* */ + T1_Skip_Spaces( parser ); + + cur = parser->root.cursor; + if ( cur >= limit ) + break; + + /* we stop when we find an `end' keyword */ + if ( *cur == 'e' && + cur + 3 < limit && + cur[1] == 'n' && + cur[2] == 'd' ) + break; + + if ( *cur != '/' ) + T1_Skip_Alpha( parser ); + else + { + FT_Byte* cur2 = cur + 1; + FT_Int len; + + + while ( cur2 < limit && t42_is_alpha( *cur2 ) ) + cur2++; + len = (FT_Int)( cur2 - cur - 1 ); + + error = T1_Add_Table( name_table, n, cur + 1, len + 1 ); + if ( error ) + goto Fail; + + /* add a trailing zero to the name table */ + name_table->elements[n][len] = '\0'; + + parser->root.cursor = cur2; + T1_Skip_Spaces( parser ); + + cur2 = cur = parser->root.cursor; + if ( cur >= limit ) + break; + + while ( cur2 < limit && t42_is_alpha( *cur2 ) ) + cur2++; + len = (FT_Int)( cur2 - cur ); + + error = T1_Add_Table( code_table, n, cur, len + 1 ); + if ( error ) + goto Fail; + + code_table->elements[n][len] = '\0'; + + n++; + if ( n >= loader->num_glyphs ) + break; + } + } + + /* Index 0 must be a .notdef element */ + if ( ft_strcmp( (char *)name_table->elements[0], ".notdef" ) ) + { + FT_ERROR(( "t42_parse_charstrings: Index 0 is not `.notdef'!\n" )); + error = T42_Err_Invalid_File_Format; + goto Fail; + } + + loader->num_glyphs = n; + return; + + Fail: + parser->root.error = error; + } + + + static FT_Error + t42_load_keyword( T42_Face face, + T42_Loader loader, + T1_Field field ) + { + FT_Error error; + void* dummy_object; + void** objects; + FT_UInt max_objects = 0; + + + /* if the keyword has a dedicated callback, call it */ + if ( field->type == T1_FIELD_TYPE_CALLBACK ) { + field->reader( (FT_Face)face, loader ); + error = loader->parser.root.error; + goto Exit; + } + + /* now, the keyword is either a simple field, or a table of fields; */ + /* we are now going to take care of it */ + switch ( field->location ) + { + case T1_FIELD_LOCATION_FONT_INFO: + dummy_object = &face->type1.font_info; + objects = &dummy_object; + break; + + default: + dummy_object = &face->type1; + objects = &dummy_object; + } + + if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY || + field->type == T1_FIELD_TYPE_FIXED_ARRAY ) + error = T1_Load_Field_Table( &loader->parser, field, + objects, max_objects, 0 ); + else + error = T1_Load_Field( &loader->parser, field, + objects, max_objects, 0 ); + + Exit: + return error; + } + + + FT_LOCAL_DEF( FT_Error ) + t42_parse_dict( T42_Face face, + T42_Loader loader, + FT_Byte* base, + FT_Long size ) + { + T42_Parser parser = &loader->parser; + FT_Byte* cur = base; + FT_Byte* limit = cur + size; + FT_UInt n_keywords = sizeof ( t42_keywords ) / + sizeof ( t42_keywords[0] ); + + + parser->root.cursor = base; + parser->root.limit = base + size; + parser->root.error = 0; + + for ( ; cur < limit; cur++ ) + { + /* look for `FontDirectory', which causes problems on some fonts */ + if ( *cur == 'F' && cur + 25 < limit && + ft_strncmp( (char*)cur, "FontDirectory", 13 ) == 0 ) + { + FT_Byte* cur2; + + + /* skip the `FontDirectory' keyword */ + cur += 13; + cur2 = cur; + + /* lookup the `known' keyword */ + while ( cur < limit && *cur != 'k' && + ft_strncmp( (char*)cur, "known", 5 ) ) + cur++; + + if ( cur < limit ) + { + T1_TokenRec token; + + + /* skip the `known' keyword and the token following it */ + cur += 5; + loader->parser.root.cursor = cur; + T1_ToToken( &loader->parser, &token ); + + /* if the last token was an array, skip it! */ + if ( token.type == T1_TOKEN_TYPE_ARRAY ) + cur2 = parser->root.cursor; + } + cur = cur2; + } + /* look for immediates */ + else if ( *cur == '/' && cur + 2 < limit ) + { + FT_Byte* cur2; + FT_UInt i, len; + + + cur++; + cur2 = cur; + while ( cur2 < limit && t42_is_alpha( *cur2 ) ) + cur2++; + + len = (FT_UInt)( cur2 - cur ); + if ( len > 0 && len < 22 ) /* XXX What shall it this 22? */ + { + /* now, compare the immediate name to the keyword table */ + + /* Loop through all known keywords */ + for ( i = 0; i < n_keywords; i++ ) + { + T1_Field keyword = (T1_Field)&t42_keywords[i]; + FT_Byte *name = (FT_Byte*)keyword->ident; + + + if ( !name ) + continue; + + if ( ( len == ft_strlen( (const char *)name ) ) && + ( ft_memcmp( cur, name, len ) == 0 ) ) + { + /* we found it -- run the parsing callback! */ + parser->root.cursor = cur2; + T1_Skip_Spaces( parser ); + parser->root.error = t42_load_keyword(face, + loader, + keyword ); + if ( parser->root.error ) + return parser->root.error; + cur = parser->root.cursor; + break; + } + } + } + } + } + return parser->root.error; + } + + + FT_LOCAL_DEF( void ) + t42_loader_init( T42_Loader loader, + T42_Face face ) + { + FT_UNUSED( face ); + + FT_MEM_SET( loader, 0, sizeof ( *loader ) ); + loader->num_glyphs = 0; + loader->num_chars = 0; + + /* initialize the tables -- simply set their `init' field to 0 */ + loader->encoding_table.init = 0; + loader->charstrings.init = 0; + loader->glyph_names.init = 0; + } + + + FT_LOCAL_DEF( void ) + t42_loader_done( T42_Loader loader ) + { + T42_Parser parser = &loader->parser; + + + /* finalize tables */ + T1_Release_Table( &loader->encoding_table ); + T1_Release_Table( &loader->charstrings ); + T1_Release_Table( &loader->glyph_names ); + + /* finalize parser */ + t42_parser_done( parser ); + } + + +/* END */ diff --git a/src/libs/freetype2/type42/t42parse.h b/src/libs/freetype2/type42/t42parse.h new file mode 100644 index 0000000000..9bcb657309 --- /dev/null +++ b/src/libs/freetype2/type42/t42parse.h @@ -0,0 +1,89 @@ +/***************************************************************************/ +/* */ +/* t42parse.h */ +/* */ +/* Type 42 font parser (specification). */ +/* */ +/* Copyright 2002 by Roberto Alameda. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __T42PARSE_H__ +#define __T42PARSE_H__ + + +#include "t42objs.h" +#include FT_INTERNAL_POSTSCRIPT_AUX_H + + +FT_BEGIN_HEADER + + typedef struct T42_ParserRec_ + { + PS_ParserRec root; + FT_Stream stream; + + FT_Byte* base_dict; + FT_Int base_len; + + FT_Byte in_memory; + + } T42_ParserRec, *T42_Parser; + + + typedef struct T42_Loader_ + { + T42_ParserRec parser; /* parser used to read the stream */ + + FT_Int num_chars; /* number of characters in encoding */ + PS_TableRec encoding_table; /* PS_Table used to store the */ + /* encoding character names */ + + FT_Int num_glyphs; + PS_TableRec glyph_names; + PS_TableRec charstrings; + + } T42_LoaderRec, *T42_Loader; + + + FT_LOCAL( FT_Error ) + t42_parser_init( T42_Parser parser, + FT_Stream stream, + FT_Memory memory, + PSAux_Service psaux ); + + FT_LOCAL( void ) + t42_parser_done( T42_Parser parser ); + + + FT_LOCAL( FT_Error ) + t42_parse_dict( T42_Face face, + T42_Loader loader, + FT_Byte* base, + FT_Long size ); + + + FT_LOCAL( void ) + t42_loader_init( T42_Loader loader, + T42_Face face ); + + FT_LOCAL( void ) + t42_loader_done( T42_Loader loader ); + + + /* */ + +FT_END_HEADER + + +#endif /* __T42PARSE_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/type42/type42.c b/src/libs/freetype2/type42/type42.c new file mode 100644 index 0000000000..d13df56b10 --- /dev/null +++ b/src/libs/freetype2/type42/type42.c @@ -0,0 +1,25 @@ +/***************************************************************************/ +/* */ +/* type42.c */ +/* */ +/* FreeType Type 42 driver component. */ +/* */ +/* Copyright 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + +#define FT_MAKE_OPTION_SINGLE_OBJECT + +#include +#include "t42objs.c" +#include "t42parse.c" +#include "t42drivr.c" + +/* END */ diff --git a/src/libs/freetype2/winfonts/Jamfile b/src/libs/freetype2/winfonts/Jamfile new file mode 100644 index 0000000000..c45e107827 --- /dev/null +++ b/src/libs/freetype2/winfonts/Jamfile @@ -0,0 +1,10 @@ +# FreeType 2 src/winfonts Jamfile (c) 2001 David Turner +# + +SubDir FT2_TOP src winfonts ; + +SubDirHdrs [ FT2_SubDir src winfonts ] ; + +Library $(FT2_LIB) : winfnt.c ; + +# end of src/winfonts Jamfile diff --git a/src/libs/freetype2/winfonts/descrip.mms b/src/libs/freetype2/winfonts/descrip.mms new file mode 100644 index 0000000000..475cdbb6bd --- /dev/null +++ b/src/libs/freetype2/winfonts/descrip.mms @@ -0,0 +1,23 @@ +# +# FreeType 2 Windows FNT/FON driver compilation rules for VMS +# + + +# Copyright 2001, 2002 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +CFLAGS=$(COMP_FLAGS)$(DEBUG)/include=([--.include],[--.src.winfonts]) + +OBJS=winfnt.obj + +all : $(OBJS) + library [--.lib]freetype.olb $(OBJS) + +# EOF diff --git a/src/libs/freetype2/winfonts/fnterrs.h b/src/libs/freetype2/winfonts/fnterrs.h new file mode 100644 index 0000000000..ea80909715 --- /dev/null +++ b/src/libs/freetype2/winfonts/fnterrs.h @@ -0,0 +1,41 @@ +/***************************************************************************/ +/* */ +/* fnterrs.h */ +/* */ +/* Win FNT/FON error codes (specification only). */ +/* */ +/* Copyright 2001 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + + /*************************************************************************/ + /* */ + /* This file is used to define the Windows FNT/FON error enumeration */ + /* constants. */ + /* */ + /*************************************************************************/ + +#ifndef __FNTERRS_H__ +#define __FNTERRS_H__ + +#include FT_MODULE_ERRORS_H + +#undef __FTERRORS_H__ + +#define FT_ERR_PREFIX FNT_Err_ +#define FT_ERR_BASE FT_Mod_Err_Winfonts + +#include FT_ERRORS_H + +#endif /* __FNTERRS_H__ */ + + +/* END */ diff --git a/src/libs/freetype2/winfonts/module.mk b/src/libs/freetype2/winfonts/module.mk new file mode 100644 index 0000000000..99be845c19 --- /dev/null +++ b/src/libs/freetype2/winfonts/module.mk @@ -0,0 +1,21 @@ +# +# FreeType 2 Windows FNT/FON module definition +# + + +# Copyright 1996-2000 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +make_module_list: add_windows_driver + +add_windows_driver: + $(OPEN_DRIVER)winfnt_driver_class$(CLOSE_DRIVER) + $(ECHO_DRIVER)winfnt $(ECHO_DRIVER_DESC)Windows bitmap fonts with extension *.fnt or *.fon$(ECHO_DRIVER_DONE) + diff --git a/src/libs/freetype2/winfonts/rules.mk b/src/libs/freetype2/winfonts/rules.mk new file mode 100644 index 0000000000..994eef8330 --- /dev/null +++ b/src/libs/freetype2/winfonts/rules.mk @@ -0,0 +1,65 @@ +# +# FreeType 2 Windows FNT/FON driver configuration rules +# + + +# Copyright 1996-2000, 2001 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +# Windows driver directory +# +FNT_DIR := $(SRC_)winfonts +FNT_DIR_ := $(FNT_DIR)$(SEP) + + +FNT_COMPILE := $(FT_COMPILE) $I$(FNT_DIR) + + +# Windows driver sources (i.e., C files) +# +FNT_DRV_SRC := $(FNT_DIR_)winfnt.c + +# Windows driver headers +# +FNT_DRV_H := $(FNT_DRV_SRC:%.c=%.h) \ + $(FNT_DIR_)fnterrs.h + + +# Windows driver object(s) +# +# FNT_DRV_OBJ_M is used during `multi' builds +# FNT_DRV_OBJ_S is used during `single' builds +# +FNT_DRV_OBJ_M := $(FNT_DRV_SRC:$(FNT_DIR_)%.c=$(OBJ_)%.$O) +FNT_DRV_OBJ_S := $(OBJ_)winfnt.$O + +# Windows driver source file for single build +# +FNT_DRV_SRC_S := $(FNT_DIR_)winfnt.c + + +# Windows driver - single object +# +$(FNT_DRV_OBJ_S): $(FNT_DRV_SRC_S) $(FNT_DRV_SRC) $(FREETYPE_H) $(FNT_DRV_H) + $(FNT_COMPILE) $T$@ $(FNT_DRV_SRC_S) + + +# Windows driver - multiple objects +# +$(OBJ_)%.$O: $(FNT_DIR_)%.c $(FREETYPE_H) $(FNT_DRV_H) + $(FNT_COMPILE) $T$@ $< + + +# update main driver object lists +# +DRV_OBJS_S += $(FNT_DRV_OBJ_S) +DRV_OBJS_M += $(FNT_DRV_OBJ_M) + +# EOF diff --git a/src/libs/freetype2/winfonts/winfnt.c b/src/libs/freetype2/winfonts/winfnt.c new file mode 100644 index 0000000000..5344c684fa --- /dev/null +++ b/src/libs/freetype2/winfonts/winfnt.c @@ -0,0 +1,776 @@ +/***************************************************************************/ +/* */ +/* winfnt.c */ +/* */ +/* FreeType font driver for Windows FNT/FON files */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_OBJECTS_H +#include FT_INTERNAL_FNT_TYPES_H + +#include "winfnt.h" + +#include "fnterrs.h" + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_winfnt + + + static + const FT_Frame_Field winmz_header_fields[] = + { +#undef FT_STRUCTURE +#define FT_STRUCTURE WinMZ_HeaderRec + + FT_FRAME_START( 64 ), + FT_FRAME_USHORT_LE ( magic ), + FT_FRAME_SKIP_BYTES( 29 * 2 ), + FT_FRAME_ULONG_LE ( lfanew ), + FT_FRAME_END + }; + + static + const FT_Frame_Field winne_header_fields[] = + { +#undef FT_STRUCTURE +#define FT_STRUCTURE WinNE_HeaderRec + + FT_FRAME_START( 40 ), + FT_FRAME_USHORT_LE ( magic ), + FT_FRAME_SKIP_BYTES( 34 ), + FT_FRAME_USHORT_LE ( resource_tab_offset ), + FT_FRAME_USHORT_LE ( rname_tab_offset ), + FT_FRAME_END + }; + + static + const FT_Frame_Field winfnt_header_fields[] = + { +#undef FT_STRUCTURE +#define FT_STRUCTURE WinFNT_HeaderRec + + FT_FRAME_START( 134 ), + FT_FRAME_USHORT_LE( version ), + FT_FRAME_ULONG_LE ( file_size ), + FT_FRAME_BYTES ( copyright, 60 ), + FT_FRAME_USHORT_LE( file_type ), + FT_FRAME_USHORT_LE( nominal_point_size ), + FT_FRAME_USHORT_LE( vertical_resolution ), + FT_FRAME_USHORT_LE( horizontal_resolution ), + FT_FRAME_USHORT_LE( ascent ), + FT_FRAME_USHORT_LE( internal_leading ), + FT_FRAME_USHORT_LE( external_leading ), + FT_FRAME_BYTE ( italic ), + FT_FRAME_BYTE ( underline ), + FT_FRAME_BYTE ( strike_out ), + FT_FRAME_USHORT_LE( weight ), + FT_FRAME_BYTE ( charset ), + FT_FRAME_USHORT_LE( pixel_width ), + FT_FRAME_USHORT_LE( pixel_height ), + FT_FRAME_BYTE ( pitch_and_family ), + FT_FRAME_USHORT_LE( avg_width ), + FT_FRAME_USHORT_LE( max_width ), + FT_FRAME_BYTE ( first_char ), + FT_FRAME_BYTE ( last_char ), + FT_FRAME_BYTE ( default_char ), + FT_FRAME_BYTE ( break_char ), + FT_FRAME_USHORT_LE( bytes_per_row ), + FT_FRAME_ULONG_LE ( device_offset ), + FT_FRAME_ULONG_LE ( face_name_offset ), + FT_FRAME_ULONG_LE ( bits_pointer ), + FT_FRAME_ULONG_LE ( bits_offset ), + FT_FRAME_BYTE ( reserved ), + FT_FRAME_ULONG_LE ( flags ), + FT_FRAME_USHORT_LE( A_space ), + FT_FRAME_USHORT_LE( B_space ), + FT_FRAME_USHORT_LE( C_space ), + FT_FRAME_USHORT_LE( color_table_offset ), + FT_FRAME_BYTES ( reserved, 4 ), + FT_FRAME_END + }; + + + static void + fnt_font_done( FNT_Font font, + FT_Stream stream ) + { + if ( font->fnt_frame ) + FT_FRAME_RELEASE( font->fnt_frame ); + + font->fnt_size = 0; + font->fnt_frame = 0; + } + + + static FT_Error + fnt_font_load( FNT_Font font, + FT_Stream stream ) + { + FT_Error error; + WinFNT_Header header = &font->header; + + + /* first of all, read the FNT header */ + if ( FT_STREAM_SEEK( font->offset ) || + FT_STREAM_READ_FIELDS( winfnt_header_fields, header ) ) + goto Exit; + + /* check header */ + if ( header->version != 0x200 && + header->version != 0x300 ) + { + FT_TRACE2(( "[not a valid FNT file]\n" )); + error = FNT_Err_Unknown_File_Format; + goto Exit; + } + + if ( header->file_type & 1 ) + { + FT_TRACE2(( "[can't handle vector FNT fonts]\n" )); + error = FNT_Err_Unknown_File_Format; + goto Exit; + } + + /* small fixup -- some fonts have the `pixel_width' field set to 0 */ + if ( header->pixel_width == 0 ) + header->pixel_width = header->pixel_height; + + /* this is a FNT file/table, we now extract its frame */ + if ( FT_STREAM_SEEK( font->offset ) || + FT_FRAME_EXTRACT( header->file_size, font->fnt_frame ) ) + goto Exit; + + Exit: + return error; + } + + + static void + fnt_face_done_fonts( FNT_Face face ) + { + FT_Memory memory = FT_FACE( face )->memory; + FT_Stream stream = FT_FACE( face )->stream; + FNT_Font cur = face->fonts; + FNT_Font limit = cur + face->num_fonts; + + + for ( ; cur < limit; cur++ ) + fnt_font_done( cur, stream ); + + FT_FREE( face->fonts ); + face->num_fonts = 0; + } + + + static FT_Error + fnt_face_get_dll_fonts( FNT_Face face ) + { + FT_Error error; + FT_Stream stream = FT_FACE( face )->stream; + FT_Memory memory = FT_FACE( face )->memory; + WinMZ_HeaderRec mz_header; + + + face->fonts = 0; + face->num_fonts = 0; + + /* does it begin with a MZ header? */ + if ( FT_STREAM_SEEK( 0 ) || + FT_STREAM_READ_FIELDS( winmz_header_fields, &mz_header ) ) + goto Exit; + + error = FNT_Err_Unknown_File_Format; + if ( mz_header.magic == WINFNT_MZ_MAGIC ) + { + /* yes, now look for a NE header in the file */ + WinNE_HeaderRec ne_header; + + + if ( FT_STREAM_SEEK( mz_header.lfanew ) || + FT_STREAM_READ_FIELDS( winne_header_fields, &ne_header ) ) + goto Exit; + + error = FNT_Err_Unknown_File_Format; + if ( ne_header.magic == WINFNT_NE_MAGIC ) + { + /* good, now look in the resource table for each FNT resource */ + FT_ULong res_offset = mz_header.lfanew + + ne_header.resource_tab_offset; + + FT_UShort size_shift; + FT_UShort font_count = 0; + FT_ULong font_offset = 0; + + + if ( FT_STREAM_SEEK( res_offset ) || + FT_FRAME_ENTER( ne_header.rname_tab_offset - + ne_header.resource_tab_offset ) ) + goto Exit; + + size_shift = FT_GET_USHORT_LE(); + + for (;;) + { + FT_UShort type_id, count; + + + type_id = FT_GET_USHORT_LE(); + if ( !type_id ) + break; + + count = FT_GET_USHORT_LE(); + + if ( type_id == 0x8008 ) + { + font_count = count; + font_offset = (FT_ULong)( FT_STREAM_POS() + 4 + + ( stream->cursor - stream->limit ) ); + break; + } + + stream->cursor += 4 + count * 12; + } + FT_FRAME_EXIT(); + + if ( !font_count || !font_offset ) + { + FT_TRACE2(( "this file doesn't contain any FNT resources!\n" )); + error = FNT_Err_Unknown_File_Format; + goto Exit; + } + + if ( FT_STREAM_SEEK( font_offset ) || + FT_NEW_ARRAY( face->fonts, font_count ) ) + goto Exit; + + face->num_fonts = font_count; + + if ( FT_FRAME_ENTER( (FT_Long)font_count * 12 ) ) + goto Exit; + + /* now read the offset and position of each FNT font */ + { + FNT_Font cur = face->fonts; + FNT_Font limit = cur + font_count; + + + for ( ; cur < limit; cur++ ) + { + cur->offset = (FT_ULong)FT_GET_USHORT_LE() << size_shift; + cur->fnt_size = (FT_ULong)FT_GET_USHORT_LE() << size_shift; + cur->size_shift = size_shift; + stream->cursor += 8; + } + } + FT_FRAME_EXIT(); + + /* finally, try to load each font there */ + { + FNT_Font cur = face->fonts; + FNT_Font limit = cur + font_count; + + + for ( ; cur < limit; cur++ ) + { + error = fnt_font_load( cur, stream ); + if ( error ) + goto Fail; + } + } + } + } + + Fail: + if ( error ) + fnt_face_done_fonts( face ); + + Exit: + return error; + } + + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + + + typedef struct FNT_CMapRec_ + { + FT_CMapRec cmap; + FT_UInt32 first; + FT_UInt32 count; + + } FNT_CMapRec, *FNT_CMap; + + + static FT_Error + fnt_cmap_init( FNT_CMap cmap ) + { + FNT_Face face = (FNT_Face)FT_CMAP_FACE( cmap ); + FNT_Font font = face->fonts; + + + cmap->first = (FT_UInt32) font->header.first_char; + cmap->count = (FT_UInt32)( font->header.last_char - cmap->first + 1 ); + + return 0; + } + + + static FT_UInt + fnt_cmap_char_index( FNT_CMap cmap, + FT_UInt32 char_code ) + { + FT_UInt gindex = 0; + + + char_code -= cmap->first; + if ( char_code < cmap->count ) + gindex = char_code + 1; + + return gindex; + } + + + static FT_UInt + fnt_cmap_char_next( FNT_CMap cmap, + FT_UInt32 *pchar_code ) + { + FT_UInt gindex = 0; + FT_UInt32 result = 0; + FT_UInt32 char_code = *pchar_code + 1; + + + if ( char_code <= cmap->first ) + { + result = cmap->first; + gindex = 1; + } + else + { + char_code -= cmap->first; + if ( char_code < cmap->count ) + { + result = cmap->first + char_code; + gindex = char_code + 1; + } + } + + *pchar_code = result; + return gindex; + } + + + static FT_CMap_ClassRec fnt_cmap_class_rec = + { + sizeof ( FNT_CMapRec ), + + (FT_CMap_InitFunc) fnt_cmap_init, + (FT_CMap_DoneFunc) NULL, + (FT_CMap_CharIndexFunc)fnt_cmap_char_index, + (FT_CMap_CharNextFunc) fnt_cmap_char_next + }; + + static FT_CMap_Class fnt_cmap_class = &fnt_cmap_class_rec; + + +#else /* !FT_CONFIG_OPTION_USE_CMAPS */ + + + static FT_UInt + FNT_Get_Char_Index( FT_CharMap charmap, + FT_Long char_code ) + { + FT_Long result = char_code; + + + if ( charmap ) + { + FNT_Font font = ((FNT_Face)charmap->face)->fonts; + FT_Long first = font->header.first_char; + FT_Long count = font->header.last_char - first + 1; + + + char_code -= first; + if ( char_code < count ) + result = char_code + 1; + else + result = 0; + } + + return result; + } + + + static FT_Long + FNT_Get_Next_Char( FT_CharMap charmap, + FT_Long char_code ) + { + char_code++; + if ( charmap ) + { + FNT_Font font = ((FNT_Face)charmap->face)->fonts; + FT_Long first = font->header.first_char; + + + if ( char_code < first ) + char_code = first; + if ( char_code <= font->header.last_char ) + return char_code; + } + else + return char_code; + return 0; + } + +#endif /* !FT_CONFIG_OPTION_USE_CMAPS */ + + + static void + FNT_Face_Done( FNT_Face face ) + { + FT_Memory memory = FT_FACE_MEMORY( face ); + + + fnt_face_done_fonts( face ); + + FT_FREE( face->root.available_sizes ); + face->root.num_fixed_sizes = 0; + } + + + static FT_Error + FNT_Face_Init( FT_Stream stream, + FNT_Face face, + FT_Int face_index, + FT_Int num_params, + FT_Parameter* params ) + { + FT_Error error; + FT_Memory memory = FT_FACE_MEMORY( face ); + + FT_UNUSED( num_params ); + FT_UNUSED( params ); + FT_UNUSED( face_index ); + + + /* try to load several fonts from a DLL */ + error = fnt_face_get_dll_fonts( face ); + if ( error ) + { + /* this didn't work, now try to load a single FNT font */ + FNT_Font font; + + + if ( FT_NEW( face->fonts ) ) + goto Exit; + + face->num_fonts = 1; + font = face->fonts; + + font->offset = 0; + font->fnt_size = stream->size; + + error = fnt_font_load( font, stream ); + if ( error ) + goto Fail; + } + + /* all right, one or more fonts were loaded; we now need to */ + /* fill the root FT_Face fields with relevant information */ + { + FT_Face root = FT_FACE( face ); + FNT_Font fonts = face->fonts; + FNT_Font limit = fonts + face->num_fonts; + FNT_Font cur; + + + root->num_faces = 1; + root->face_flags = FT_FACE_FLAG_FIXED_SIZES | + FT_FACE_FLAG_HORIZONTAL; + + if ( fonts->header.avg_width == fonts->header.max_width ) + root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; + + if ( fonts->header.italic ) + root->style_flags |= FT_STYLE_FLAG_ITALIC; + + if ( fonts->header.weight >= 800 ) + root->style_flags |= FT_STYLE_FLAG_BOLD; + + /* Setup the `fixed_sizes' array */ + if ( FT_NEW_ARRAY( root->available_sizes, face->num_fonts ) ) + goto Fail; + + root->num_fixed_sizes = face->num_fonts; + + { + FT_Bitmap_Size* size = root->available_sizes; + + + for ( cur = fonts; cur < limit; cur++, size++ ) + { + size->width = cur->header.pixel_width; + size->height = cur->header.pixel_height; + } + } + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + + { + FT_CharMapRec charmap; + + charmap.encoding = ft_encoding_unicode; + charmap.platform_id = 3; + charmap.encoding_id = 1; + charmap.face = root; + + error = FT_CMap_New( fnt_cmap_class, + NULL, + &charmap, + NULL ); + if ( error ) + goto Fail; + + /* Select default charmap */ + if ( root->num_charmaps ) + root->charmap = root->charmaps[0]; + } + +#else /* !FT_CONFIG_OPTION_USE_CMAPS */ + + /* Setup the `charmaps' array */ + root->charmaps = &face->charmap_handle; + root->num_charmaps = 1; + + face->charmap.encoding = ft_encoding_unicode; + face->charmap.platform_id = 3; + face->charmap.encoding_id = 1; + face->charmap.face = root; + + face->charmap_handle = &face->charmap; + + root->charmap = face->charmap_handle; + +#endif /* !FT_CONFIG_OPTION_USE_CMAPS */ + + /* setup remaining flags */ + root->num_glyphs = fonts->header.last_char - + fonts->header.first_char + 1; + + root->family_name = (FT_String*)fonts->fnt_frame + + fonts->header.face_name_offset; + root->style_name = (char *)"Regular"; + + if ( root->style_flags & FT_STYLE_FLAG_BOLD ) + { + if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) + root->style_name = (char *)"Bold Italic"; + else + root->style_name = (char *)"Bold"; + } + else if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) + root->style_name = (char *)"Italic"; + } + + Fail: + if ( error ) + FNT_Face_Done( face ); + + Exit: + return error; + } + + + static FT_Error + FNT_Size_Set_Pixels( FNT_Size size ) + { + /* look up a font corresponding to the current pixel size */ + FNT_Face face = (FNT_Face)FT_SIZE_FACE( size ); + FNT_Font cur = face->fonts; + FNT_Font limit = cur + face->num_fonts; + + + size->font = 0; + for ( ; cur < limit; cur++ ) + { + /* we only compare the character height, as fonts used some strange */ + /* values */ + if ( cur->header.pixel_height == size->root.metrics.y_ppem ) + { + size->font = cur; + + size->root.metrics.ascender = cur->header.ascent * 64; + size->root.metrics.descender = ( cur->header.pixel_height - + cur->header.ascent ) * 64; + size->root.metrics.height = cur->header.pixel_height * 64; + break; + } + } + + return ( size->font ? FNT_Err_Ok : FNT_Err_Invalid_Pixel_Size ); + } + + + static FT_Error + FNT_Load_Glyph( FT_GlyphSlot slot, + FNT_Size size, + FT_UInt glyph_index, + FT_Int load_flags ) + { + FNT_Font font = size->font; + FT_Error error = 0; + FT_Byte* p; + FT_Int len; + FT_Bitmap* bitmap = &slot->bitmap; + FT_ULong offset; + FT_Bool new_format; + + FT_UNUSED( slot ); + FT_UNUSED( load_flags ); + + + if ( !font ) + { + error = FNT_Err_Invalid_Argument; + goto Exit; + } + + if ( glyph_index > 0 ) + glyph_index--; + else + glyph_index = font->header.default_char - font->header.first_char; + + new_format = FT_BOOL( font->header.version == 0x300 ); + len = new_format ? 6 : 4; + + /* jump to glyph entry */ + p = font->fnt_frame + 118 + len * glyph_index; + + bitmap->width = FT_NEXT_SHORT_LE( p ); + + if ( new_format ) + offset = FT_NEXT_ULONG_LE( p ); + else + offset = FT_NEXT_USHORT_LE( p ); + + /* jump to glyph data */ + p = font->fnt_frame + /* font->header.bits_offset */ + offset; + + /* allocate and build bitmap */ + { + FT_Memory memory = FT_FACE_MEMORY( slot->face ); + FT_Int pitch = ( bitmap->width + 7 ) >> 3; + FT_Byte* column; + FT_Byte* write; + + + bitmap->pitch = pitch; + bitmap->rows = font->header.pixel_height; + bitmap->pixel_mode = ft_pixel_mode_mono; + + if ( FT_ALLOC( bitmap->buffer, pitch * bitmap->rows ) ) + goto Exit; + + column = (FT_Byte*)bitmap->buffer; + + for ( ; pitch > 0; pitch--, column++ ) + { + FT_Byte* limit = p + bitmap->rows; + + + for ( write = column; p < limit; p++, write += bitmap->pitch ) + write[0] = p[0]; + } + } + + slot->flags = FT_GLYPH_OWN_BITMAP; + slot->bitmap_left = 0; + slot->bitmap_top = font->header.ascent; + slot->format = ft_glyph_format_bitmap; + + /* now set up metrics */ + slot->metrics.horiAdvance = bitmap->width << 6; + slot->metrics.horiBearingX = 0; + slot->metrics.horiBearingY = slot->bitmap_top << 6; + + slot->linearHoriAdvance = (FT_Fixed)bitmap->width << 16; + slot->format = ft_glyph_format_bitmap; + + Exit: + return error; + } + + + FT_CALLBACK_TABLE_DEF + const FT_Driver_ClassRec winfnt_driver_class = + { + { + ft_module_font_driver, + sizeof ( FT_DriverRec ), + + "winfonts", + 0x10000L, + 0x20000L, + + 0, + + (FT_Module_Constructor)0, + (FT_Module_Destructor) 0, + (FT_Module_Requester) 0 + }, + + sizeof( FNT_FaceRec ), + sizeof( FNT_SizeRec ), + sizeof( FT_GlyphSlotRec ), + + (FT_Face_InitFunc) FNT_Face_Init, + (FT_Face_DoneFunc) FNT_Face_Done, + (FT_Size_InitFunc) 0, + (FT_Size_DoneFunc) 0, + (FT_Slot_InitFunc) 0, + (FT_Slot_DoneFunc) 0, + + (FT_Size_ResetPointsFunc) FNT_Size_Set_Pixels, + (FT_Size_ResetPixelsFunc) FNT_Size_Set_Pixels, + (FT_Slot_LoadFunc) FNT_Load_Glyph, + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + (FT_CharMap_CharIndexFunc)0, +#else + (FT_CharMap_CharIndexFunc)FNT_Get_Char_Index, +#endif + + + (FT_Face_GetKerningFunc) 0, + (FT_Face_AttachFunc) 0, + (FT_Face_GetAdvancesFunc) 0, + +#ifdef FT_CONFIG_OPTION_USE_CMAPS + (FT_CharMap_CharNextFunc) 0 +#else + (FT_CharMap_CharNextFunc) FNT_Get_Next_Char +#endif + }; + + +/* END */ diff --git a/src/libs/freetype2/winfonts/winfnt.h b/src/libs/freetype2/winfonts/winfnt.h new file mode 100644 index 0000000000..4ba85e0b23 --- /dev/null +++ b/src/libs/freetype2/winfonts/winfnt.h @@ -0,0 +1,39 @@ +/***************************************************************************/ +/* */ +/* winfnt.h */ +/* */ +/* FreeType font driver for Windows FNT/FON files */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __WINFNT_H__ +#define __WINFNT_H__ + + +#include +#include FT_INTERNAL_DRIVER_H + + +FT_BEGIN_HEADER + + + FT_EXPORT_VAR( const FT_Driver_ClassRec ) winfnt_driver_class; + + +FT_END_HEADER + + +#endif /* __WINFNT_H__ */ + + +/* END */