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Ben Wagner 7819aeb622 Avoid Microsoft compiler warnings (#51331). 
While clang's sanitizer recommends a cast to unsigned for safe
negation (to handle -INT_MIN), both MSVC and Visualc emit warning
C4146 if an unsigned value gets negated.

* include/freetype/internal/ftcalc.h (NEG_LONG, NEG_INT32),
src/base/ftcalc.c (FT_MOVE_SIGN): Replace negation with a
subtraction.
2017-06-28 22:57:41 +02:00

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2017-06-28 Ben Wagner <bungeman@google.com>
Avoid Microsoft compiler warnings (#51331).
While clang's sanitizer recommends a cast to unsigned for safe
negation (to handle -INT_MIN), both MSVC and Visualc emit warning
C4146 if an unsigned value gets negated.
* include/freetype/internal/ftcalc.h (NEG_LONG, NEG_INT32),
src/base/ftcalc.c (FT_MOVE_SIGN): Replace negation with a
subtraction.
2017-06-27 Werner Lemberg <wl@gnu.org>
* src/cff/cffparse.c (do_fixed): Fix typo.
Spotted by chris <chris@gcjd.org>.
2017-06-27 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2384
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2391
* src/base/ftcalc.c (FT_MulDiv, FT_MulDiv_No_Round, FT_DivFix): Use
NEG_LONG.
* src/truetype/ttinterp.c (Ins_SxVTL): Use NEG_LONG.
2017-06-24 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2364
* src/truetype/ttinterp.c (Ins_ISECT): Use NEG_LONG.
2017-06-22 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2323
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2328
* src/cff/cf2blues.c (cf2_blues_capture): Use ADD_INT32 and
SUB_INT32.
* src/truetype/ttinterp.c (Ins_SDPVTL): Use SUB_LONG and NEG_LONG.
2017-06-21 Alexei Podtelezhnikov <apodtele@gmail.com>
[sfnt] Synthesize a Unicode charmap if one is missing.
* src/sfnt/ttcmap.h (tt_cmap_unicode_class_rec): Declare it.
* src/sfnt/ttcmap.c (tt_get_glyph_name, tt_cmap_unicode_init,
tt_cmap_unicode_done, tt_cmap_unicode_char_index,
tt_cmap_unicode_char_next, tt_cmap_unicode_class_rec): Implement
synthetic Unicode charmap class.
(tt_get_cmap_info): Make sure the callback is available.
* src/sfnt/sfobjs.c (sfnt_load_face)
[FT_CONFIG_OPTION_POSTSCRIPT_NAMES]: If Unicode charmap is missing,
synthesize one.
* include/freetype/config/ftoption.h: Document it.
* devel/ftoption.h: Ditto.
2017-06-20 Tony Theodore <tonyt@logyst.com>
Fix pkg-config in freetype-config for cross-compiling (#51274).
* builds/unix/unix-def.in (PKG_CONFIG): New variable.
(freetype-config): Use it in sed expression.
* builds/unix/freetype-config.in: s/pkg-config/%PKG_CONFIG%/.
2017-06-20 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2300
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2313
* src/cff/cf2hints.c (cf2_hintmap_adjustHints): Use ADD_INT32.
* src/truetype/ttinterp.c (Ins_ABS): Avoid FT_ABS.
2017-06-17 Alexei Podtelezhnikov <apodtele@gmail.com>
[base, smooth] LCD filtering cleanups.
* src/base/ftlcdlil.c (ft_lcd_filter_fir, _ft_lcd_filter_legacy):
Clean up, start filtering from the bottom-left origin.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Updated.
2017-06-16 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2270
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2278
* src/truetype/ttinterp.c (Ins_MDRP, _iup_worker_interpolate): Use
ADD_LONG and SUB_LONG.
2017-06-15 Werner Lemberg <wl@gnu.org>
[bdf, cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2244
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2261
* src/bdf/bdfdrivr.c (BDF_Face_Init): Replace calls to FT_ABS with
direct code to avoid value negation.
* src/cff/cf2blues.c (cf2_blues_capture): Use SUB_INT32 and
ADD_INT32.
2017-06-13 Werner Lemberg <wl@gnu.org>
* src/winfonts/winfnt.c (FNT_Face_Init): Don't set active encoding.
FreeType only sets a default active encoding for Unicode.
2017-06-13 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2216
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2218
* src/cff/cf2fixed.h (cf2_fixedAbs): Use NEG_INT32.
* src/truetype/ttinterp.c (Ins_IP): Use SUB_LONG.
2017-06-11 Werner Lemberg <wl@gnu.org>
[cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2200
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2210
* src/cff/cf2hints.c (cf2_hintmap_insertHint): Use SUB_INT32 and
ADD_INT32.
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVMOVETO>: Use
ADD_INT32.
2017-06-10 Werner Lemberg <wl@gnu.org>
[truetype] Fix TT_Set_Var_Design.
Reported by Nikolaus Waxweiler <madigens@gmail.com>.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Correctly handle the
case where we have less input coordinates than axes.
2017-06-10 Werner Lemberg <wl@gnu.org>
* src/base/ftcalc.c (FT_DivFix): Fix embarrassing typo.
Bug introduced 2017-05-28.
2017-06-09 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2144
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2151
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2153
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2173
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2186
* src/cff/cf2blues.c (cf2_blues_init): Use SUB_INT32.
* src/truetype/ttinterp.c (Round_None, Round_To_Grid,
Round_To_Half_Grid, Round_Down_To_Grid, Round_Up_To_Grid,
Round_To_Double_Grid, Round_Super, Round_Super_45): Use ADD_LONG,
SUB_LONG, NEG_LONG, FT_PIX_ROUND_LONG, FT_PIX_CEIL_LONG,
FT_PAD_ROUND_LONG
(Ins_SxVTL, Ins_MIRP): Use SUB_LONG.
(_iup_worker_shift): Use SUB_LONG and ADD_LONG.
2017-06-09 Werner Lemberg <wl@gnu.org>
Provide more macros for flooring, ceiling, and rounding.
These versions don't produce run-time errors due to integer
overflow.
* include/freetype/internal/ftobjs.h: Include FT_INTERNAL_CALC_H.
(FT_PAD_ROUND_LONG, FT_PAD_CEIL_LONG, FT_PIX_ROUND_LONG,
FT_PIX_CEIL_LONG): New macros.
(FT_PAD_ROUND_INT32, FT_PAD_CEIL_INT32, FT_PIX_ROUND_INT32,
FT_PIX_CEIL_INT32): New macros.
2017-06-09 Werner Lemberg <wl@gnu.org>
Remove unused macros.
* include/freetype/internal/ftcalc.h (ADD_INT, SUB_INT, MUL_INT,
NEG_INT): Deleted.
2017-06-09 Werner Lemberg <wl@gnu.org>
*/*: Remove `OVERFLOW_' prefix.
This increases readability.
2017-06-07 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2133
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2137
* src/cff/cf2hints.c (cf2_hint_init): Use OVERFLOW_SUB_INT32.
* src/truetype/ttinterp.c (PROJECT, DUALPROJ): Use
OVERFLOW_SUB_LONG.
2017-06-06 Werner Lemberg <wl@gnu.org>
[cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2109
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2110
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2122
* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.
* src/cff/cf2hints.c (cf2_hintmap_map): Synchronize if-else
branches.
2017-06-05 Werner Lemberg <wl@gnu.org>
[cff] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2089
* src/cff/cffload.c (cff_blend_doBlend): User OVERFLOW_ADD_INT32.
2017-06-04 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2075
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2088
* src/cff/cf2font.c (cf2_font_setup): Use OVERFLOW_MUL_INT32.
* src/truetype/ttinterp.c (Ins_ISECT): Use OVERFLOW_MUL_LONG,
OVERFLOW_ADD_LONG, and OVERFLOW_SUB_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
[base, cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2060
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2062
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2063
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2068
* src/base/ftobjs.c (ft_glyphslot_grid_fit_metrics): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.
* src/cff/cf2blues.c (cf2_blues_capture), src/cff/cf2hints.c
(cf2_hintmap_adjustHints): Use OVERFLOW_SUB_INT32.
* src/truetype/ttgload.c (compute_glyph_metrics): User
OVERFLOW_SUB_LONG.
* src/truetype/ttinterp.c (Direct_Move, Direct_Move_Orig,
Direct_Move_X, Direct_Move_Y, Direct_Move_Orig_X,
Direct_Move_Orig_Y, Move_Zp2_Point, Ins_MSIRP): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
* builds/unix/freetype-config.in: Fix pkg-config test (#51162).
Patch directly taken from bug report.
2017-06-03 Werner Lemberg <wl@gnu.org>
[bdf] Synchronize sanity checks with pcf driver.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2054
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2058
* src/bdf/bdfdrivr.c (BDF_Face_Init): Check font ascent and descent.
Check AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE, RESOLUTION_X, and
RESOLUTION_Y properties.
2017-06-03 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2047
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2057
* src/cff/cf2hints.c (cf2_hintmap_map): Use OVERFLOW_SUB_INT32.
* src/truetype/ttinterp.c (Ins_ADD): Use OVERFLOW_ADD_LONG.
(Ins_SUB): Use OVERFLOW_SUB_LONG.
(Ins_NEG): Use NEG_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
ftcalc.h: Avoid left-shift of negative numbers.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2055
* include/freetype/internal/ftcalc.h (INT_TO_F26DOT6,
INT_TO_F2DOT14, INT_TO_FIXED, F2DOT14_TO_FIXED): Use multiplication.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] Even more integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2046
* src/cff/cf2intrp.c (cf2_doStems, cf2_interpT2CharString): Use
OVERFLOW_ADD_INT32.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] More integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2032
* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.
2017-06-02 Werner Lemberg <wl@gnu.org>
[bdf] Don't left-shift negative numbers.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2031
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use multiplication.
2017-06-02 Werner Lemberg <wl@gnu.org>
[bdf] Fix integer scanning routines.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2029
* src/bdf/bdflib.c (_bdf_atoul, _bdf_atol, _bdf_atous, _bdf_atos):
Stop scanning if result would overflow.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] Fix integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2027
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2028
* src/cff/cf2hints.c (cf2_hintmap_insertHint), src/cff/cf2intrp.c
(cf2_doFlex): Use OVERFLOW_ADD_INT32 and OVERFLOW_SUB_INT32.
2017-06-01 Werner Lemberg <wl@gnu.org>
[smooth] Some 32bit integer overflow run-time errors.
* src/smooth/ftgrays.c [STANDALONE] (OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG, NEG_LONG): New macros.
[!STANDALONE]: Include FT_INTERNAL_CALC_H.
(gray_render_cubic): Use those macros where appropriate.
2017-06-01 Werner Lemberg <wl@gnu.org>
* src/base/ftglyph.c (FT_Get_Glyph): Check `slot->advance'.
2017-06-01 Werner Lemberg <wl@gnu.org>
[psaux] 32bit integer overflow tun-time errors (#46149).
* src/psaux/t1decode.c (t1_decoder_parse_charstrings): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG where appropriate.
2017-06-01 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter again.
Problem reported by Marek Kašík <mkasik@redhat.com>.
The problematic font that exceeds the old limit is Padauk-Bold,
version 3.002, containing bytecode generated by a buggy version of
ttfautohint.
2017-05-31 Werner Lemberg <wl@gnu.org>
[cff] 32bit integer overflow run-time errors 2/2 (#46149).
This commit handles the new engine.
* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT32,
OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, NEG_INT, NEG_LONG,
NEG_INT32): New macros.
* src/cff/cf2ft.c (cf2_getScaleAndHintFlag): Use OVERFLOW_ADD_INT32.
* src/cff/cf2hints.c (cf2_getWindingMomentum, cf2_hint_init,
cf2_hintmap_map, cf2_glyphpath_hintPoint,
cf2_glyphpath_computeIntersection, cf2_glyphpath_computeOffset,
cf2_glyphpath_lineTo, cf2_glyphpath_curveTo): Use
OVERFLOW_ADD_INT32, OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, and
NEG_INT32 where appropriate.
* src/cff/cf2intrp.c (cf2_doFlex, cf2_doBlend,
cf2_interpT2CharString): Ditto.
Also add some other code where needed to avoid overflow.
2017-05-30 Werner Lemberg <wl@gnu.org>
[cff] 32bit integer overflow run-time errors 1/2 (#46149).
This commit handles the old engine.
* src/cff/cffgload.c: Include FT_INTERNAL_CALC_H.
(cff_decoder_parse_charstrings): Use OVERFLOW_ADD_LONG and
OVERFLOW_SUB_LONG where needed.
* src/cff/cffparse.c: Include FT_INTERNAL_CALC_H.
(power_ten_limits): New static array.
(do_fixed): Use it to prevent multiplication overflow.
(cff_parser_run): Use OVERFLOW_ADD_LONG.
2017-05-30 Werner Lemberg <wl@gnu.org>
[psaux] Correctly handle sequences of multiple number signs.
* src/psaux/psconv.c (PS_Conv_Strtol, PS_Conv_ToFixed): Return zero
if we encounter more than a single sign.
2017-05-29 Werner Lemberg <wl@gnu.org>
[pcf] 32bit integer overflow run-time errors (#46149).
* src/pcf/pcfread.c (pcf_get_accel): Add sanity checks for
`fontAscent' and `fontDescent'.
(pcf_load_font): Add sanity checks for global height.
Add sanity checks for AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE,
RESOLUTION_X, and RESOLUTION_Y properties.
2017-05-29 Werner Lemberg <wl@gnu.org>
Handle some integer overflow run-time errors (#46149, #48979).
This commit (mainly for 32bit CPUs) is the first of a series of
similar commits to handle known integer overflows. Basically, all
of them are harmless, since they affect rendering of glyphs only,
not posing security threats. It is expected that fuzzying will show
up more overflows, to be fixed in due course.
The idea is to mark places where overflows can occur, using macros
that simply cast to unsigned integers, because overflow arithmetic
is well defined in this case. Doing so suppresses run-time errors
of sanitizers without adding computational overhead.
* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT,
OVERFLOW_SUB_INT, OVERFLOW_MUL_INT, OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG): New macros.
* src/base/ftcalc.c (FT_RoundFix, FT_CeilFix, FT_Matrix_Multiply,
FT_Matrix_Multiply_Scaled, FT_Vector_Transform_Scaled,
ft_corner_orientation): Use new macros.
* src/base/ftoutln.c (FT_Outline_Get_Orientation): Use new macros.
2017-05-28 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/ftcalc.h (FLOAT_TO_FIXED): Remove.
This macro is not used.
2017-05-28 Werner Lemberg <wl@gnu.org>
[cff] s/cf2_floatToFixed/cf2_doubleToFixed/.
The new name better describes what the macro actually does;
additionally, we don't need a trailing `f' for literals (there was
only a single such instance in the code, but this caused a clang
warning because the macro itself uses `double' literals).
* src/cff/cf2blues.c, src/cff/cf2blues.h, src/cff/cf2fixed.h,
src/cff/cf2font.c, src/cff/cf2hints.c: Updated.
2017-05-28 Werner Lemberg <wl@gnu.org>
Fix negation of INT_MIN and LONG_MIN (#46149).
* src/base/ftcalc.c (FT_MOVE_SIGN): Add argument to pass unsigned
value, to be used as the result.
(FT_MulDiv, FT_MulDiv_No_Round, FT_DivFix, FT_MulFix,
FT_Vector_NormLen): Updated.
2017-05-27 Werner Lemberg <wl@gnu.org>
[truetype] Fix handling of design coordinates (#51127).
* src/truetype/ttgxvar.c (tt_set_mm_blend): Compute all design
coordinates if we have to create the `blends->coord' array.
(TT_Get_MM_Blend, TT_Get_Var_Design): Select default instance
coordinates if no instance is selected yet.
2017-05-24 Werner Lemberg <wl@gnu.org>
[bdf, pcf] Support ISO646.1991-IRV character encoding (aka ASCII).
Problem reported by Marek Kašík <mkasik@redhat.com>, cf.
https://bugzilla.redhat.com/show_bug.cgi?id=1451795
* src/bdf/bdfdrivr.c (BDF_Face_Init), src/pcf/pcfdrivr.c
(PCF_Face_Init): Implement it.
2017-05-20 Nikolaus Waxweiler <madigens@gmail.com>
[truetype] Always use interpreter v35 for B/W rendering (#51051).
* src/truetype/ttgload.c (tt_loader_init)
[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Adjust
`subpixel_hinting_lean', `grayscale_cleartype', and
`vertical_lcd_lean' accordingly.
* src/truetype/ttinterp.c (Ins_GETINFO): Updated.
(TT_RunIns): Update `backward_compatibility' flag.
2017-05-20 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Implement minimal dynamic padding for LCD filtering.
Extra bitmap padding for LCD filtering depends on the filter. The
default 5-tap filter needs 2 extra subpixels. The light 3-tap filter
needs only 1 extra subpixel. This space could be already available
due to rounding. In order to optimize the padding, we now expand
CBox for the given filter weights before rounding.
This change breakes current Skia (and Firefox).
* include/freetype/internal/ftobjs.h (FT_LibraryRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Remove `lcd_extra' field.
* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights,
FT_Library_SetLcdFilter): Remove `lcd_extra' initializations.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Implement dymanic
LCD padding.
2017-05-15 Werner Lemberg <wl@gnu.org>
[sfnt] Return proper scaling values for SBIX bitmaps.
Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Implement it.
2017-05-15 Werner Lemberg <wl@gnu.org>
[truetype] Fix error handling for embedded bitmaps.
Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.
* src/truetype/ttgload.c (TT_Load_Glyph)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Handle error if font is not
scalable.
2017-05-15 Alexei Podtelezhnikov <apodtele@gmail.com>
[autofit] Make autohint warping NORMAL option.
This moves warping option from LIGHT to NORMAL mode. This makes LIGHT
truly void of hinting in x-direction, with left side bearing never
changed and right side bearing only altered by advance rounding.
Therefore, LIGHT is now ready to return fractional advance. As a
NORMAL option, warping substitutes normal hinting.
* src/autofit/afcjk.c (af_cjk_hints_apply): Updated.
* src/autofit/aflatin.c (af_latin_hints_apply): Updated.
* src/autofit/aflatin2.c (af_latin2_hints_apply): Updated.
* src/autofit/afloader.c (af_loader_load_glyph): Handle warping
phantom points as normal.
2017-05-14 Werner Lemberg <wl@gnu.org>
Remove remnants of raster pool.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Remove
`raster_pool' and `raster_pool_size' fields.
* src/base/ftobjs.c (FT_New_Library), src/raster/ftrend1.c
(ft_raster1_init), src/smooth/ftsmooth.c (ft_smooth_init): Updated.
2017-05-13 Werner Lemberg <wl@gnu.org>
* Version 2.8 released.
=======================
Tag sources with `VER-2-8'.
* docs/VERSION.TXT: Add entry for version 2.8.
* docs/CHANGES: Updated.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.7.1/2.8/, s/271/28/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 8.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 20:0:14.
* CMakeLists.txt (VERSION_MINOR): Set to 8.
(VERSION_PATCH): Set to 0.
2017-05-12 Hin-Tak Leung <htl10@users.sourceforge.net>
Fix `FT_UINT_TO_POINTER' macro for Windows.
* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h (FT_UINT_TO_POINTER) [_WIN64]:
Fix definition.
2017-05-11 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Chakma script.
* src/autofit/afblue.dat: Add blue zone data for Chakma.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Chakma standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Chakma data.
2017-05-10 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Kayah Li script.
* src/autofit/afblue.dat: Add blue zone data for Kayah Li.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Kayah Li standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Kayah Li data.
2017-05-10 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Bamum script.
* src/autofit/afblue.dat: Add blue zone data for Bamum.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Bamum standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Bamum data.
2017-05-10 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Saurashtra script.
* src/autofit/afblue.dat: Add blue zone data for Saurashtra.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Saurashtra standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Saurashtra
data.
2017-05-10 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Buhid script.
* src/autofit/afblue.dat: Add blue zone data for Buhid.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Buhid standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Buhid data.
2017-05-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Shavian script.
* src/autofit/afblue.dat: Add blue zone data for Shavian.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Shavian standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Shavian data.
2017-05-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Vai script.
* src/autofit/afblue.dat: Add blue zone data for Vai.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Vai standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Vai data.
2017-05-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Osmanya script.
* src/autofit/afblue.dat: Add blue zone data for Osmanya.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Osmanya standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Osmanya data.
2017-05-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Coptic script.
* src/autofit/afblue.dat: Add blue zone data for Coptic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Coptic standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Coptic data.
2017-05-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Carian script.
* src/autofit/afblue.dat: Add blue zone data for Carian.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Carian standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Carian data.
2017-05-07 Werner Lemberg <wl@gnu.org>
[truetype] Add tricky font `DFGirl-W6-WIN-BF' (from Dynalab).
Reported by Roy Tam <roytam@gmail.com>.
* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.
2017-05-07 Roy Tam <roytam@gmail.com>
Werner Lemberg <wl@gnu.org>
[truetype] More tricky fonts (mainly from Dynalab).
* src/truetype/ttobjs.c (tt_check_trickyness_family,
tt_check_trickyness_sfnt_ids): Add them.
2017-05-07 Werner Lemberg <wl@gnu.org>
[truetype] Add tricky font `DLCHayMedium' (from Dynalab).
Reported by Roy Tam <roytam@gmail.com>.
* src/truetype/ttobjs.c (tt_check_trickyness_family): Implement it.
2017-05-03 Werner Lemberg <wl@gnu.org>
*/*: s/backwards compatibility/backward compatibility/.
2017-05-03 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Unified Canadian Syllabics script.
* src/autofit/afblue.dat: Add blue zone data for Unified Canadian
Syllabics.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Unified Canadian Syllabics standard
character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Unified
Canadian Syllabics data.
2017-05-03 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org>
[autofit] Add blue-zone support for Sundanese script.
This essentially moves the Sundanese script from the `Indic' hinter
to the `Latin' hinter.
* src/autofit/afblue.dat: Add blue zone data for Sundanese.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Sundanese standard character and move
data out of AF_CONFIG_OPTION_INDIC block.
* src/autofit/afranges.c: Move Sundanese data out of
AF_CONFIG_OPTION_INDIC block.
* src/autofit/afstyles.h: Update Sundanese data; in particular, use
AF_WRITING_SYSTEM_LATIN.
2017-05-03 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Avestan script.
* src/autofit/afblue.dat: Add blue zone data for Avestan.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Avestan standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Avestan data.
2017-05-02 Behdad Esfahbod <behdad@behdad.org>
[truetype] Make `IUP' gvar deltas do the same as Apple (#50832).
When points are not touched by gvar interpolation deltas, FreeType
gave a slightly different result than Apple's CoreText.
The OpenType working group will update the specification to document
the following behaviour: If the two points with deltas to the `left'
and `right' of the untouched point have the same coordinate, then
the inferred delta for the untouched point should be zero.
* src/truetype/ttgxvar.c (tt_delta_interpolate): Implement new
behaviour.
2017-05-02 Werner Lemberg <wl@gnu.org>
[autofit] Remove `slight' auto-hint mode again.
A poll on freetype-devel favoured changes directly applied to
`light'.
* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT,
FT_RENDER_MODE_SLIGHT): Removed.
* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2.c
(af_latin2_hints_init): Revert change from 2017-04-22.
* src/autofit/afloader.c (af_loader_load_glyph) Remove references to
FT_RENDER_MODE_SLIGHT.
[AF_CONFIG_OPTION_TT_SIZE_METRICS]: Enable TrueType-like metrics
unconditionally.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Revert change from
2017-04-22.
* src/base/ftobjs.c (FT_Load_Glyph): Revert change from 2017-04-22.
* src/pshinter/pshalgo.c (ps_hints_apply): Revert change from
2017-04-22.
* src/smooth/ftsmooth.c (ft_smooth_render): Revert change from
2017-04-22.
* docs/CHANGES: Updated.
2017-04-30 Werner Lemberg <wl@gnu.org>
[autofit] Fix metrics computation.
Problem reported by Markus Trippelsdorf <markus@trippelsdorf.de> and
Nikolaus Waxweiler <madigens@gmail.com>.
* src/base/ftobjs.c (FT_Request_Size): Trigger recomputation of
auto-hinter metrics. Without this change, multiple size changing
calls for a single face fail.
2017-04-29 Werner Lemberg <wl@gnu.org>
* src/truetype/ttdriver.c (tt_size_request): Properly check `error'.
Reported by Earnestly <zibeon@googlemail.com> in
http://lists.nongnu.org/archive/html/freetype/2017-04/msg00031.html
2017-04-27 Werner Lemberg <wl@gnu.org>
Introduce AF_CONFIG_OPTION_TT_SIZE_METRICS configuration option.
* include/freetype/config/ftoption.h
(AF_CONFIG_OPTION_TT_SIZE_METRICS): New option, commented out by
default.
* src/autofit/afloader.c (af_loader_load_glyph): Use
AF_CONFIG_OPTION_TT_SIZE_METRICS to guard the corresponding code.
2017-04-26 Werner Lemberg <wl@gnu.org>
* include/freetype/freetype.h (FT_Render_Mode): Fix order.
This retains backward compatibility.
Noted by Alexei.
2017-04-22 Werner Lemberg <wl@gnu.org>
[truetype] Do linear scaling for FT_LOAD_NO_HINTING (#50470).
* src/truetype/ttobs.h (TT_SizeRec): Add field `hinted_metrics' to
hold hinted metrics.
Make `metrics' a pointer so that `tt_glyph_load' can easily switch
between metrics.
* src/truetype/ttdriver.c (tt_size_request): Updated.
(tt_glyph_load): Use top-level metrics if FT_LOAD_NO_HINTING is
used.
* src/truetype/ttgload.c (TT_Hint_Glyph, TT_Process_Simple_Glyph,
TT_Process_Composite_Component, load_truetype_glyph,
compute_glyph_metrics, TT_Load_Glyph): Updated.
* src/truetype/ttinterp.c (TT_Load_Context): Updated.
* src/truetype/ttobjs.c (tt_size_reset): Updated.
* src/truetype/ttsubpix.c (sph_set_tweaks): Updated.
2017-04-22 Werner Lemberg <wl@gnu.org>
Add new `slight' auto-hinting mode.
This mode uses fractional advance widths and doesn't scale glyphs
horizontally, only applying vertical scaling and hinting.
At the same time, the behaviour of the `light' auto-hinter gets
restored for backward compatibility: Both vertical and horizontal
scaling is again based on rounded metrics values (this was changed
in a commit from 2017-03-30 as a side effect). To be more precise,
the behaviour is restored for TrueType fonts only; for other font
formats like Type 1, this is a new feature of the `light' hinting
mode.
* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT): New macro.
(FT_RENDER_MODE_SLIGHT): New render mode.
* include/freetype/internal/ftobjs.h (FT_Size_InternalRec): Add
`autohint_mode' and `autohint_metrics' fields.
* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2 (af_latin2_hints_init):
Updated.
* src/autofit/afloader.c (af_loader_embolden_glyph_in_slot): Use
`autohint_metrics'.
(af_loader_load_glyph): s/internal/slot_internal/.
Initialize `autohint_metrics' and `autohint_mode' depending on
current auto-hint mode.
Use `autohint_metrics'.
Updated.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Updated.
* src/base/ftobjs.c (FT_Load_Glyph): Updated.
(FT_New_Size): Allocate `internal' object.
* src/pshinter/pshalgo.c (ps_hints_apply): Updated.
* src/smooth/ftsmooth.c (ft_smooth_render): Updated.
2017-04-22 Werner Lemberg <wl@gnu.org>
Introduce `FT_Size_InternalRec' structure.
We are going to extend this later on.
* include/freetype/internal/ftobjs.h (FT_Size_InternalRec): New
structure with a single field `module_data'.
* src/base/ftobjs.c (FT_New_Size): Allocate `internal' field of
`FT_Size' structure.
* src/cff/cffgload.c (cff_builder_init, cff_decoder_prepare): Use
`size->internal->module_data' instead of `size->internal'.
* src/cff/cffobjs.c (cff_size_done): Deallocate `module_data'.
(cff_size_init, cff_size_select, cff_size_request): Use
`size->internal->module_data' instead of `size->internal'.
* src/cif/cidobjs.c (cid_size_done, cid_size_init,
cid_size_request): Use `size->internal->module_data' instead of
`size->internal'.
* src/psaux/psobjs.c (t1_builder_ini): Use
`size->internal->module_data' instead of `size->internal'.
* src/type1/t1objs.c (T1_Size_Done, T1_Size_Init, T1_Size_Request):
Use `size->internal->module_data' instead of `size->internal'.
2017-04-21 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftsmooth.h: Remove unused guards and declaration.
2017-04-16 Hin-Tak Leung <htl10@users.sourceforge.net>
Fix tracing messages.
* src/base/ftobjs.c (FT_Face_GetCharVariantIndex,
FT_Face_GetCharVariantIsDefault, FT_Face_GetVariantsOfChar): Print
correct function name.
2017-04-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Old Turkic script.
* src/autofit/afblue.dat: Add blue zone data for Old Turkic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Old Turkic standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Old Turkic data.
2017-04-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Gothic script.
* src/autofit/afblue.dat: Add blue zone data for Gothic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Gothic standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Gothic data.
2017-04-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Cypriot script.
* src/autofit/afblue.dat: Add blue zone data for Cypriot.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Cypriot standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Cypriot data.
2017-04-08 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Deseret script.
* src/autofit/afblue.dat: Add blue zone data for Deseret.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Deseret standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Deseret data.
2017-04-07 Werner Lemberg <wl@gnu.org>
[autofit] Fix invalid character range description (#50745).
Also reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1034
* src/autofit/afranges.c (af_glag_nonbase_uniranges): Fix typo in
recent commit.
2017-04-07 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Fix clang warnings.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Add
casts.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Lisu script.
* src/autofit/afblue.dat: Add blue zone data for Lisu.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Lisu standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Lisu data.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Osage script.
* src/autofit/afblue.dat: Add blue zone data for Osage.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Osage standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Osage data.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Glagolitic script.
* src/autofit/afblue.dat: Add blue zone data for Glagolitic.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Glagolitic standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Glagolitic data.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Tai Viet script.
* src/autofit/afblue.dat: Add blue zone data for Tai Viet.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Tai Viet standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Tai Viet data.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for Tifinagh script.
* src/autofit/afblue.dat: Add blue zone data for Tifinagh.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Tifinagh standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Tifinagh data.
2017-04-06 Sascha Brawer <sascha@google.com>
Werner Lemberg <wl@gnu.org
[autofit] Add support for N'Ko script.
* src/autofit/afblue.dat: Add blue zone data for N'Ko.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add N'Ko standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add N'Ko data.
2017-04-06 Sascha Brawer <sascha@google.com>
[autofit] Add support for Adlam script.
* src/autofit/afblue.dat: Add blue zone data for Adlam.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Adlam standard characters.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Adlam data.
2017-04-06 Sascha Brawer <sascha@google.com>
[autofit] Add support for Ol Chiki script.
* src/autofit/afblue.dat: Add blue zone data for Ol Chiki.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
* src/autofit/afscript.h: Add Ol Chiki standard character.
* src/autofit/afranges.c, src/autofit/afstyles.h: Add Ol Chiki data.
2017-04-03 Werner Lemberg <wl@gnu.org>
[truetype] Avoid reexecution of `fpgm' and `prep' in case of error.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=981
* include/freetype/fterrdef.h (FT_Err_DEF_In_Glyf_Bytecode): New
error code.
* src/truetype/ttinterp.c (Ins_FDEF, Ins_IDEF): Prohibit execution
of these two opcodes in `glyf' bytecode.
(TT_RunIns): Don't enforce reexecution of `fpgm' and `prep' bytecode
in case of error since function tables can no longer be modified
(due to the changes in `Ins_FDEF' and `Ins_IDEF'). This change can
enormously speed up handling of broken fonts.
2017-04-02 Alexei Podtelezhnikov <apodtele@gmail.com>
[autofit] Disable metrics adjustment for `FT_LOAD_TARGET_LCD'.
* src/autofit/aflatin.c (af_latin_hints_init): Updated.
* src/autofit/aflatin2.c (af_latin2_hints_init): Ditto.
2017-04-01 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgload.c: Include FT_CONFIG_CONFIG_H.
Otherwise FT_UINT_TO_POINTER might not be defined.
Problem reported by Alexei.
2017-03-31 Alexei Podtelezhnikov <apodtele@gmail.com>
[autofit] Disable stem adjustment for `FT_LOAD_TARGET_LCD'.
* include/freetype/freetype.h (FT_LOAD_TARGET_LCD): Document it.
* src/autofit/afcjk.c (af_cjk_hints_init): Updated.
* src/autofit/aflatin.c (af_latin_hints_init): Ditto.
* src/autofit/aflatin2.c (af_latin2_hints_init): Ditto.
2017-03-31 Werner Lemberg <wl@gnu.org>
* src/cff/cffload.c (cff_font_load): Improve fix from 2017-01-04.
Allow CFFs containing a single font to have an empty font name.
Problem reported by 張俊芝 <418092625@qq.com> in
http://lists.nongnu.org/archive/html/freetype-devel/2017-03/msg00074.html
2017-03-30 Werner Lemberg <wl@gnu.org>
* src/cff/cffparse.h (CFF2_DEFAULT_STACK): Set to 513 also.
Requested by Dave Arnold.
2017-03-30 Werner Lemberg <wl@gnu.org>
[truetype] Fix HVAR and VVAR handling (#50678).
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Handle
glyph indices larger than `mapCount' as described in the
specification.
2017-03-30 Werner Lemberg <wl@gnu.org>
[truetype] Allow linear scaling for unhinted rendering (#50470).
* src/truetype/ttdriver.c (tt_size_request): Revert change from
2011-07-16; the intended metrics fix seems now to be implemented in
a different way, making the patch unnecessary. Note that this
change was usually patched out by all major GNU/Linux distributions
due to heavy side effects.
* src/truetype/ttgload.c (compute_glyph_metrics, TT_Load_Glyph):
Refer to the metrics of the `TT_Size' object.
2017-03-29 Werner Lemberg <wl@gnu.org>
[truetype] Fix thinko related to PS name of default named instance.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): `strid' and `psid' are
name ID values, not indices into the array of name entries.
2017-03-27 Werner Lemberg <wl@gnu.org>
[cid, truetype] Don't use `index' as a variable name.
At least on FreeBSD there is a global declaration of `index' in file
`/usr/include/strings.h'.
* src/cff/cf2intrp.c, src/truetype/ttgload.c: s/index/idx/ where
appropriate.
2017-03-27 Wojciech Mamrak <wmamrak@gmail.com>
[sfnt] Minor improvement for handling kern tables.
* src/sfnt/ttkern.c (tt_face_load_kern): Don't check for
cross-stream kerning tables since we reject format 2 tables later
on anyways.
Modify code for limit test...
(tt_face_get_kerning): ... to avoid a limit test here.
2017-03-27 Werner Lemberg <wl@gnu.org>
[pcf] Fix compiler warnings.
Reported by Alexander Hedges <ahedges@student.ethz.ch>.
* src/pcf/pcfdrivr.c (pcf_property_set, pcf_property_get): Tag
`property_name' with `FT_UNUSED' where necessary.
2017-03-26 Werner Lemberg <wl@gnu.org>
* src/psaux/psobjs.c (t1_builder_close_contour): Add safety guard.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=941
2017-03-23 Werner Lemberg <wl@gnu.org>
[psaux] Better protect `flex' handling.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=935
* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<callothersubr>: Since there is not a single flex operator but a
series of subroutine calls, malformed fonts can call arbitrary other
operators after the start of a flex, possibly adding points. For
this reason we have to check the available number of points before
inserting a point.
2017-03-23 Werner Lemberg <wl@gnu.org>
[sfnt] Fix check for default named instance.
* src/sfnt/sfobjs.c (sfnt_init_face): A `fixed' number needs four
bytes, not two...
2017-03-23 Werner Lemberg <wl@gnu.org>
Make MM fonts work (again).
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Ignore
return value of `ft_face_get_mvar_service'; instead, check whether a
service is actually returned.
2017-03-20 Werner Lemberg <wl@gnu.org>
[truetype] Some variable renamings.
Too much local variables holding different structures were called
`metrics'.
* src/truetype/ttdriver.c (tt_size_select): s/metrics/size_metrics/.
* src/truetype/ttgload.c (tt_get_metrics_incr_overrides,
compute_glyph_metrics): s/metrics/incr_metrics/.
(load_sbit_image): s/metrics/sbit_metrics/.
* src/truetype/ttobjs.c (tt_size_run_fpgm): s/metrics/size_metrics/.
(tt_size_init_bytecode): s/metrics/tt_metrics/.
(tt_size_reset): s/metrics/size_metrics/.
2017-03-20 Werner Lemberg <wl@gnu.org>
[sfnt] Don't add instances to non-variation fonts.
* src/sfnt/sfobjs.c (sfnt_init_face): Fix it.
2017-03-20 Werner Lemberg <wl@gnu.org>
* src/cff/cffgload.c (cff_builder_init): Add safety guard (#50578).
2017-03-18 Werner Lemberg <wl@gnu.org>
Introduce FT_UINT_TO_POINTER macro (#50560).
We have to make a separate case for Windows 64's LLP64 data model.
* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h (FT_UINT_TO_POINTER): New macro.
* src/truetype/ttgload.c (load_truetype_glyph): Use it.
2017-03-18 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter (#50573).
The problematic font that exceeds the old limit is Lato-Regular,
version 2.007, containing bytecode generated by a buggy version of
ttfautohint.
2017-03-18 Werner Lemberg <wl@gnu.org>
[truetype] Another limitation for bytecode loop count maximum.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=900
* src/truetype/ttinterp.c (TT_RunIns): Limit `loopcall_counter_max'
by number of glyphs also.
2017-03-18 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Minor improvement.
* src/tools/ftfuzzer/ftfuzzer.cc: Don't set intermediate axis if
bitmap strikes are active.
2017-03-18 Werner Lemberg <wl@gnu.org>
Improve `make multi'.
* src/autofit/aflatin2.c: Guard file with FT_OPTION_AUTOFIT2.
* src/base/ftmac.c: Guard more parts of the file with FT_MACINTOSH.
* src/psaux/afmparse.c: Guard file with T1_CONFIG_OPTION_NO_AFM.
* src/sfnt/pngshim.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS also.
* src/sfnt/ttbdf.c: Avoid empty source file.
* src/sfnt/ttpost.c: Guard file with
TT_CONFIG_OPTION_POSTSCRIPT_NAMES.
* src/sfnt/ttsbit.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS.
* src/truetype/ttgxvar.c, src/truetype/ttinterp.c: Avoid empty
source file.
* src/truetype/ttsubpix.c: Guard file with
TT_USE_BYTECODE_INTERPRETER also.
* src/type1/t1afm.c: Guard file with T1_CONFIG_OPTION_NO_AFM.
* src/autofit/autofit.c, src/base/ftbase.c, src/cache/ftcache.c,
src/cff/cff.c, src/cid/type1cid.c, src/gxvalid/gxvalid.c,
src/pcf/pcf.c, src/pfr/pfr.c, src/psaux/psaux.c,
src/pshinter/pshinter.c, src/psnames/psnames.c, src/raster/raster.c,
src/sfnt/sfnt.c, src/smooth/smooth.c, src/truetype/truetype.c,
src/type1/type1.c, src/type42/type42.c: Remove conditionals; sort
entries.
2017-03-17 Werner Lemberg <wl@gnu.org>
Fixes for conditional compilation.
* src/autofit/afcjk.c, src/autofit/afindic.c: Include `afcjk.h'
earlier.
* src/sfnt/sfobjs.c (sfnt_init_face): Put `memory' variable into
TT_CONFIG_OPTION_GX_VAR_SUPPORT block.
(sfnt_done_face): Protect some code with
TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/sfnt/ttsbit.c (tt_face_load_sbix_image): Remove compiler
warning.
* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Put `tmp' variable
into TT_USE_BYTECODE_INTERPRETER block.
(tt_loader_init): Put `error' variable into
TT_USE_BYTECODE_INTERPRETER block.
2017-03-17 Werner Lemberg <wl@gnu.org>
Fix preprocessor warning.
* devel/ftoption.h, include/freetype/config/ftoption.h: Test whether
TT_CONFIG_OPTION_SUBPIXEL_HINTING is defined before checking its
value.
2017-03-17 Werner Lemberg <wl@gnu.org>
`make multi' fixes; compiler warnings.
* src/base/ftsnames.c: Include FT_INTERNAL_DEBUG_H.
* src/cff/cffobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
FT_MULTIPLE_MASTERS_H and FT_SERVICE_MULTIPLE_MASTERS_H.
* src/sfnt/sfdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
FT_MULTIPLE_MASTERS_H and FT_SERVICE_MULTIPLE_MASTERS_H.
(get_win_string, get_apple_string): Initialize `result'.
2017-03-17 Dave Arnold <darnold@adobe.com>
[cff] Fix potential bugs in default NDV for CFF2.
* src/cff/cffload.c (cff_blend_build_vector): Explicitly build blend
vector when `lenNDV' is zero; don't rely on zero-init.
Save `lenNDV' as part of cache key even when `lenNDV' is zero.
2017-03-17 Dave Arnold <darnold@adobe.com>
[cff] Fix CFF2 stack allocation.
* src/cff/cffparse.c (cff_parser_init) add 1 for operator.
2017-03-16 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_done_blend): Free `vvar_table'.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=883
2017-03-15 Werner Lemberg <wl@gnu.org>
Remove clang compiler warnings (#50548).
* include/freetype/internal/tttypes.h (TT_FaceRec): Make
`var_postscript_prefix_len' unsigned.
* src/autofit/afwarp.c (af_warper_compute_line_best): Remove
redundant assignment.
* src/cff/cffload.c (cff_subfont_load): Add casts.
* src/cff/cffparse.c (cff_parse_blend): Remove redundant assignment.
* src/sfnt/sfdriver.c (fmix32, murmur_hash_3_128): Add `static'
keyword.
Add casts.
(fixed2float): Add cast.
(sfnt_get_var_ps_name): Make `p' always initialized.
Add casts.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Add casts.
2017-03-15 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Limit number of tested faces and instances.
This is inspired by the discussion in and analysis of
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=859
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Use only
up to 20 face indices.
Use only up to 20 instance indices.
2017-03-15 Werner Lemberg <wl@gnu.org>
* src/tools/ftfuzzer/ftfuzzer.cc: Improve readability; formatting.
2017-03-14 Werner Lemberg <wl@gnu.org>
[sfnt] Implement PS names for font instances [3/3].
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/tttypes.h (TT_FaceRec): New fields
`var_postscript_prefix' and `var_postscript_prefix_len'.
* src/sfnt/sfdriver.c: Include FT_TRUETYPE_IDS_H.
(sfnt_is_alphanumeric): New wrapperfunction for `ft_isalnum'.
(get_win_string, get_apple_string): Remove `const' from return
value.
(MAX_VALUE_DESCRIPTOR_LEN, MAX_PS_NAME_LEN): New macros.
(hexdigits): New array.
(sfnt_get_var_ps_name): New function, implementing Adobe TechNote
5902 to construct a PS name for a variation font instance.
(sfnt_get_ps_name): Call `sfnt_get_var_ps_name' for font instances.
* src/sfnt/sfobjs.c (sfnt_done_face): Updated.
* src/truetype/ttgxvar.c (tt_set_mm_blend): Reset
`face->postscript_name' to trigger recalculation for new instance
parameters.
2017-03-14 Werner Lemberg <wl@gnu.org>
[sfnt] Implement PS names for font instances [2/3].
* src/sfnt/sfdriver.c (fix2float) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]:
New function to find the shortest representation of a 16.16
fractional number.
2017-03-14 Werner Lemberg <wl@gnu.org>
[sfnt] Implement PS names for font instances [1/3].
Add 128bit MurmurHash 3 function.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/sfnt/sfdriver.c (ROTL32): New macro.
(fmix32, murmur_hash_3_128): New functions.
2017-03-13 Werner Lemberg <wl@gnu.org>
[truetype] Ignore invalid MVAR tags.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=838
* src/truetype/ttgxvar.c (ft_var_load_mvar): Ignore value and emit
warning for invalid tags.
(tt_apply_mvar): Ignore invalid tags.
2017-03-12 Werner Lemberg <wl@gnu.org>
[truetype] Store and use design coordinates also.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
Add `normalizedcoords' argument.
* src/truetype/ttgxvar.h (GX_BlendRec): Add `coords' field to store
the design coordinates of the current instance.
Updated.
* src/truetype/ttgxvar.c (TT_Set_MM_Blend): Move functionality to...
(tt_set_mm_blend): ... New function.
Convert data in `normalizedcoords' array to `coords' array on
demand.
(TT_Set_Var_Design): Store argument data in `coords' array.
(TT_Get_Var_Design): Get data from `coords' array.
(tt_get_var_blend): Updated.
(tt_done_blend): Updated.
* src/cff/cffload.c, src/cff/cffload.h (cff_get_var_blend): Updated.
* src/cff/cf2ft.c (cf2_getNormalizedVector): Updated.
* src/cff/cffobjs.c (cff_face_init): Updated.
2017-03-12 Werner Lemberg <wl@gnu.org>
src/truetype/ttgxvar.[ch]: s/avar_checked/avar_loaded/.
2017-03-08 Werner Lemberg <wl@gnu.org>
[sfnt] Another fix for buggy variation fonts.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=759
* src/sfnt/sfobjs.c (sfnt_init_face): While setting number of
instances to zero for `CFF' fonts table, ensure that there is no
`CFF2' present also (which gets priority).
2017-03-07 Werner Lemberg <wl@gnu.org>
[sfnt] Improve handling for buggy variation fonts.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=738
* src/sfnt/sfobjs.c (sfnt_init_face): While setting number of
instances to zero for `CFF' fonts table, ensure that there is no
`glyf' table present also (which gets priority).
2017-03-06 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Always provide default instance.
As documented in the OpenType specification, an entry for the
default instance may be omitted in the named instance table. In
particular this means that even if there is no named instance table
in the font we actually do have a named instance, namely the default
instance.
For consistency, we always want the default instance in our list of
named instances. If it is missing, we try to synthesize it.
* src/sfnt/sfobjs.c (sfnt_init_face): Check whether the default
instance is in the table of named instances. Otherwise adjust
number of instances.
* src/truetype/ttgxvar.c: Include FT_TRUETYPE_IDS_H.
(TT_Get_MM_Var): Use `face->root.style_flags' as the number of named
instances.
Sythesize a named instance entry if necessary.
(tt_done_blend): Free `normalized_stylecoords'.
2017-03-05 Werner Lemberg <wl@gnu.org>
[sfnt] Remove redundant code.
* src/sfnt/sfobjs.c (sfnt_init_face): Remove second test for
`num_instances', which will always succeed.
2017-03-04 Werner Lemberg <wl@gnu.org>
[sfnt] Add `get_name_id' service.
* include/freetype/internal/sfnt.h (TT_Get_Name_ID_Func): New
typedef.
(SFNT_Interface): Add `get_name_id' field.
(FT_DEFINE_SFNT_INTERFACE): Updated.
* src/sfnt/sfdriver.c (search_name_id): Rename to...
(sfnt_get_name_id): ... this.
(sfnt_get_ps_name, sfnt_interface): Udpated.
2017-03-04 Werner Lemberg <wl@gnu.org>
[truetype] Make `TT_Set_MM_Blend' set named instance index.
* src/truetype/ttgxvar.h (GX_Blend): New array
`normalized_stylecoords'.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Allocate and fill
`normalized_stylecoords'.
(TT_Set_MM_Blend): Check instance tuple and adjust `face_index'
accordingly.
2017-03-02 Werner Lemberg <wl@gnu.org>
[truetype] Split off designer/normalized conversion routines.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Split off conversion
code designer->normalized coordinates to...
(ft_var_to_normalized): ... New function.
(TT_Get_Var_Design): Split off conversion code normalized->designer
coordinates to...
(ft_var_to_design): ... New function.
2017-02-28 Werner Lemberg <wl@gnu.org>
[sfnt] Further generalize `sfnt_get_ps_name'; report invalid data.
* src/sfnt/sfdriver.c (sfnt_ps_map): New array.
(sfnt_is_postscript): New function.
(char_type_func): New typedef.
(get_win_string, get_apple_string): Add argument to specify
character checking function.
Add argument whether argument checking failures should be reported.
Update callers.
(search_name_id): Fix return value.
2017-02-23 Werner Lemberg <wl@gnu.org>
[sfnt] Split off another bit of `sfnt_get_ps_name'.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Split off some
functionality into...
(search_name_id): ... New function.
2017-02-23 Werner Lemberg <wl@gnu.org>
[sfnt] Modularize `sfnt_get_ps_name'.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Split off some
functionality into...
(IS_WIN, IS_APPLE): ... New macros.
(get_win_string, get_apple_string): ... New functions.
2017-02-23 Werner Lemberg <wl@gnu.org>
[truetype] Minor improvement.
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Remove unnecessary tests.
2017-02-23 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/tttypes.h (TT_Face): s/isCFF2/is_cff2/.
For orthogonality with other structure field names.
Update all users.
2017-02-22 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_hline): Improve code.
2017-02-20 Dominik Röttsches <drott@google.com>
Fix some `ttnameid.h' entries (#50313).
* include/freetype/ttnameid.h:
s/TT_MS_LANGID_SPANISH_INTERNATIONAL_SORT/TT_MS_LANGID_SPANISH_SPAIN_INTERNATIONAL_SORT/,
s/TT_MS_LANGID_MONGOLIAN_MONGOLIA_MONGOLIA/TT_MS_LANGID_MONGOLIAN_MONGOLIA_MONGOLIAN/.
2017-02-20 Werner Lemberg <wl@gnu.org>
[cff] Finish support for `random' operator.
* src/cff/cfftypes.h (CFF_SubFontRec): Add `random' field.
* src/cff/cffobjs.c: Updated.
(cff_driver_init): Initialize random seed value.
* src/cff/cffload.c (cff_random): New function.
(cff_subfont_load): Add `face' argument.
Update all callers.
Initialize random number generator with a proper seed value.
(cff_font_load): Add `face' argument.
Update all callers.
* src/cff/cffload.h: Updated.
* src/cff/cf2intrp.c (CF2_FIXME): Removed.
(cf2_interpT2CharString) <cf2_escRANDOM>: Implement opcode.
* src/cff/cffgload.c (cff_decoder_parse_charstrings): Don't
initialize random seed value.
<cff_op_random>: Use new random seed framework.
2017-02-20 Werner Lemberg <wl@gnu.org>
[cff] Sanitize `initialRandomSeed'.
* src/cff/cffload.c (cff_load_private_dict): Make
`initial_random_seed' value always positive.
2017-02-20 Werner Lemberg <wl@gnu.org>
[cff] Introduce `random-seed' property (2/2).
* src/base/ftobjs.c: Include `FT_CFF_DRIVER_H'.
(open_face): Initialize `face->internal->random_seed'.
(FT_Face_Properties): Handle `FT_PARAM_TAG_RANDOM_SEED'.
* src/cff/cffdrivr.c (cff_property_set): Handle `random-seed'
property.
2017-02-20 Werner Lemberg <wl@gnu.org>
[cff] Introduce `random-seed' property (1/2).
We need this for support of the `random' operator.
* include/freetype/ftcffdrv.h (FT_PARAM_TAG_RANDOM_SEED): New macro.
* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): New
field `random_seed'.
* src/cff/cffobjs.h (CFF_DriverRec): New field `random_seed'.
2017-02-17 Werner Lemberg <wl@gnu.org>
Remove clang warnings.
* src/autofit/aflatin.c (af_latin_sort_blue): Add missing `static'
keyword.
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates):
Initialize some variables.
2017-02-16 Nikolaus Waxweiler <madigens@gmail.com>
Werner Lemberg <wl@gnu.org>
Add face property for stem darkening.
* include/freetype/ftautoh.h (FT_PARAM_TAG_STEM_DARKENING): New
macro.
* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): Add
`no_stem_darkening' field.
* src/autofit/afloader.c (af_loader_load_glyph),
src/autofit/afmodule.c (af_property_set): Updated.
* src/base/ftobjs.c: Include FT_AUTOHINTER_H.
(ft_open_face_internal): Updated.
(FT_Face_Properties): Handle FT_PARAM_TAG_STEM_DARKENING.
* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Updated.
* src/cff/cffdrivr.c (cff_property_set): Updated.
2017-02-16 Nikolaus Waxweiler <madigens@gmail.com>
Werner Lemberg <wl@gnu.org>
Add face property for LCD filter weights.
* include/freetype/ftlcdfil.h (FT_PARAM_TAG_LCD_FILTER_WEIGHTS,
FT_LCD_FILTER_FIVE_TAPS): New macros.
(FT_LcdFiveTapFilter): New typedef.
* include/freetype/ftobjs.h (FT_Face_InternalRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Add `lcd_weights' field.
(FT_Bitmap_LcdFilterFunc): Change third argument to weights array.
(ft_lcd_filter_fir): New prototype.
(FT_LibraryRec): Updated.
* src/base/ftlcdfil.c (_ft_lcd_filter_fir): Renamed to...
(ft_lcd_filter_fir): ... this base function.
Updated.
(_ft_lcd_filter_legacy): Updated.
(FT_Library_SetLcdFilterWeights, FT_Library_SetLcdFilter): Updated.
* src/base/ftobjs.c (ft_open_face_internal): Updated.
(FT_Face_Properties): Handle FT_PARAM_TAG_LCD_FILTER_WEIGHTS.
* src/smooth/ftsmooth.c (ft_smooth_render_generic)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Handle LCD weights from
`FT_Face_Internal'.
2017-02-14 Nikolaus Waxweiler <madigens@gmail.com>
Werner Lemberg <wl@gnu.org>
Add new function `FT_Face_Properties'.
This commit provides the framework, to be filled with something
useful in the next commits.
* include/freetype/freetype.h (FT_Face_Properties): Declare.
* src/base/ftobjs.c (FT_Face_Properties): New function.
2017-02-13 Werner Lemberg <wl@gnu.org>
[autofit] Prevent overlapping blue zones.
Problem reported as
https://github.com/google/fonts/issues/632
The font in question (Nunito) has values 705 and 713 for the
reference and overshoot values, respectively, of the first blue
zone. Blue zone 2, however, has value 710 for both the reference
and overshoot. At 12ppem, reference and overshoot of blue zone 0
becomes 8px, while blue zone 2 becomes 9px.
A peculiarity of this font is that the tops of isolated vertical
stems like `N' have a slight overshoot also. The auto-hinter tries
to find the nearest blue zone using the *original* coordinates. For
vertical stems, this is value 713. For normal horizontal tops like
in character `E', this is value 710. Since value 713 is mapped to
8px but value 710 to 9px, `N' and similar characters are one pixel
higher than `E', which looks very bad.
This commit sanitizes blue zones to avoid such a behaviour.
* src/autofit/aflatin.c (af_latin_sort_blue): New function.
(af_latin_metrics_init_blues): Sort blue values and remove overlaps.
2017-02-12 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_sweep): Improve code.
2017-02-06 Werner Lemberg <wl@gnu.org>
[truetype] Implement `VVAR' table support.
* src/truetype/ttgxvar.h (GX_HVarTable): Renamed to...
(GX_HVVarTable): ...This.
(GX_Blend): Add fields for `VVAR' table handling.
Other minor updates.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Renamed to...
(ft_var_load_hvvar): ...This.
Handle VVAR loading also (controlled by an additional parameter).
(tt_hadvance_adjust): Renamed to...
(tt_hvadvance_adjust): ...This.
Handle application of advance height also (controlled by an
additional parameter).
(tt_hadvance_adjust, tt_vadvance_adjust): Wrappers for
`tt_hvadvance_adjust'.
* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.
2017-02-05 Werner Lemberg <wl@gnu.org>
[autofit] Use better blue zone characters for lowercase latin.
The number of lowercase characters for computing the top flat blue
zone value was too small (in most cases only `x' and `z'). If one
of the two characters has a large serif, say, it can happen that
FreeType must select between two different values, having a 50%
chance to use the wrong one. As a result, rendering at larger PPEM
values could yield uneven lowercase glyph heights.
Problem reported by Christoph Koeberlin <christoph@koe.berlin>.
* src/autofit/afblue.dat (AF_BLUE_STRING_LATIN_SMALL): Replaced
with...
(AF_BLUE_STRING_LATIN_SMALL_TOP, AF_BLUE_STRING_LATIN_SMALL_BOTTOM):
... New, extended sets.
(AF_BLUE_STRINGSET_LATN): Updated.
* src/autofit/afblue.c, scr/autofit/afblue.h: Regenerated.
2017-02-04 Werner Lemberg <wl@gnu.org>
Make `freetype-config' a wrapper of `pkg-config' if possible.
Based on ideas taken from
http://pkgs.fedoraproject.org/cgit/rpms/freetype.git/tree/freetype-multilib.patch
http://pkgs.fedoraproject.org/cgit/rpms/freetype.git/tree/freetype-2.5.3-freetype-config-prefix.patch
* builds/unix/freetype-config.in: Rewritten. Use `pkg-config' to
set output variables if program is available.
* docs/CHANGES, docs/freetype-config.1: Updated.
2017-02-04 Werner Lemberg <wl@gnu.org>
* builds/unix/unix-def.in (freetype-config): Fix permissions.
2017-02-03 Werner Lemberg <wl@gnu.org>
* src/autofit/afglobal.c (af_face_globals_free): Erase useless code.
2017-02-03 Werner Lemberg <wl@gnu.org>
* include/freetype/ftgasp.h (FT_GASP_SYMMETRIC_GRIDFIT): Fix value.
Reported by Behdad.
2017-02-02 Werner Lemberg <wl@gnu.org>
[truetype] Fix MVAR post-action handling.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=509
* src/truetype/ttobjs.c (tt_size_reset): Do nothing for CFF2. This
is important to make `tt_size_reset_iterator' (called in
`tt_apply_mvar') always work.
2017-02-02 Werner Lemberg <wl@gnu.org>
Make compilation with FT_CONFIG_OPTION_PIC work again.
All code committed here is guarded with `FT_CONFIG_OPTION_PIC'.
* include/freetype/internal/services/svmetric.h
(FT_DEFINE_SERVICE_METRICSVARIATIONSREC): Remove trailing semicolon.
* src/autofit/aflatin.c (af_latin_hints_compute_edges,
af_latin_hint_edges): Provide `globals' variable.
* src/autofit/afloader.c (af_loader_load_glyph): Remove shadowing
variable.
* src/autofit/afmodule.c (AF_SCRIPT_CLASSES_GET,
AF_STYLE_CLASSES_GET): Redefine.
* src/autofit/aftypes.h (AF_DEFINE_WRITING_SYSTEM_CLASS): Fix typo.
* src/cff/cffparse.c (CFF_FIELD_BLEND): Provide it.
* src/cff/cffpic.h (CffModulePIC): Fix typo.
2017-01-31 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_render_scanline): Improve code.
2017-01-31 Werner Lemberg <wl@gnu.org>
[cff] Provide metrics variation service interface (#50196).
Only now I've got an OTF with an HVAR table for testing...
The code in `ftmm.c' uses `FT_FACE_LOOKUP_SERVICE' to get the
metrics variations interface. However, this didn't work with
`FT_FACE_FIND_GLOBAL_SERVICE' used in `sfnt_init_face'.
* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(cff_hadvance_adjust, cff_metrics_adjust): Wrapper functions for
metric service functions from the `truetype' module.
(cff_service_metrics_variations): New service.
(cff_services): Updated.
* src/cff/cffpic.h (CFF_SERVICE_METRICS_VAR_GET): New macro.
[FT_CONFIG_OPTION_PIC]: Synchronize code.
* src/sfnt/sfobjs.c (sfnt_init_face): Replace call to
FT_FACE_FIND_GLOBAL_SERVICE with `ft_module_get_service' to always
load the service from the `truetype' module.
2017-01-31 Werner Lemberg <wl@gnu.org>
Add framework to support services with 9 functions.
* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC9):
New macro.
2017-01-31 Werner Lemberg <wl@gnu.org>
[base] Fix error handing in MM functions.
* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates):
Implement it.
2017-01-31 Werner Lemberg <wl@gnu.org>
[truetype] Fix sanity check for `gvar' table (#50184).
* src/truetype/ttgxvar.c (ft_var_load_gvar): There might be missing
variation data for some glyphs.
2017-01-31 Werner Lemberg <wl@gnu.org>
[autofit] Avoid uninitialized jumps (#50191).
* src/autofit/afcjk.c (af_cjk_metrics_check_digits),
src/autofit/aflatin.c (af_latin_metrics_check_digits): Initialize
`advance'.
2017-01-27 Werner Lemberg <wl@gnu.org>
s/GB2312/PRC/.
* include/freetype/freetype.h (FT_ENCODING_PRC): New enum value.
(FT_ENCODING_GB2312): Deprecated.
* include/freetype/ttnameid.h (TT_MS_ID_PRC): New macro.
(TT_MS_ID_GB2312): Deprecated.
* src/sfnt/sfobjs.c (sfnt_find_encoding): Updated.
* docs/CHANGES: Updated.
2017-01-26 Werner Lemberg <wl@gnu.org>
[base] Add `FT_Get_Sfnt_LangTag' function.
* include/freetype/ftsnames.h (FT_SfntLangTag): New structure.
(FT_Get_Sfnt_LangTag): New declaration.
* src/base/ftsnames.c (FT_Get_Sfnt_LangTag): New funtion.
* docs/CHANGES: Updated.
2017-01-26 Werner Lemberg <wl@gnu.org>
[sfnt] Support `name' table format 1.
* include/freetype/internal/tttypes.h (TT_LangTagRec): New
structure.
(TT_NameTableRec): Add fields `numLangTagRecords' and `langTags'.
* src/sfnt/ttload.c (tt_face_load_name): Add support for language
tags.
Reduce array size of name strings in case of invalid entries.
(tt_face_free_name): Updated.
* docs/CHANGES: Updated.
2017-01-25 Werner Lemberg <wl@gnu.org>
[sfnt] s/TT_NameEntry/TT_Name/.
* include/freetype/internal/tttypes.h (TT_NameEntryRec): Renamed
to...
(TT_NameRec): This.
(TT_NameTableRec): Updated.
* src/base/ftsnames.c (FT_Get_Sfnt_Name): Updated.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Updated.
* src/sfnt/sfobjs.c (tt_name_entry_ascii_from_utf16,
tt_name_entry_ascii_from_other): Renamed to...
(tt_name_ascii_from_utf16, tt_name_entry_ascii_from_other): This,
respectively.
(TT_NameEntry_ConvertFunc): Renamed to...
(TT_Name_ConvertFunc): This.
(tt_face_get_name): Updated.
* src/sfnt/ttload.c (tt_face_load_name, tt_face_free_name):
Updated.
2017-01-24 Werner Lemberg <wl@gnu.org>
[sfnt] Fix Postscript name service for symbol fonts.
* src/sfnt/sfdriver.c (sfnt_get_ps_name): Accept PID/EID=3/0
entries also.
2017-01-24 Werner Lemberg <wl@gnu.org>
[truetype] For OpenType 1.7: s/preferred/typographic/ (sub)family.
* include/freetype/ftsnames.h
(FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY,
FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY): New macros.
(FT_PARAM_TAG_IGNORE_PREFERRED_FAMILY,
FT_PARAM_TAG_IGNORE_PREFERRED_SUBFAMILY): Deprecated.
* include/freetype/ttnameid.h (TT_NAME_ID_TYPOGRAPHIC_FAMILY,
TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY): New macros.
(TT_NAME_ID_PREFERRED_FAMILY, TT_NAME_ID_PREFERRED_SUBFAMILY):
Deprecated.
* src/sfnt/sfobjs.c (sfnt_load_face): Updated.
* docs/CHANGES: Updated.
2017-01-23 Werner Lemberg <wl@gnu.org>
[base] Add `FT_Set_Default_Properties' (#49187).
* include/freetype/ftmodapi.h: Add declaration.
* src/base/ftinit.c (ft_set_default_properties): Renamed to...
(FT_Set_Default_Properties): ... this.
(FT_Init_FreeType): Updated.
* docs/CHANGES: Updated.
2017-01-23 Werner Lemberg <wl@gnu.org>
[truetype] Minor updates for OpenType 1.8.1.
* src/truetype/ttgxvar.h (GX_MVarTable): `axisCount' has been
removed from the specification; it is now reserved.
* src/truetype/ttgxvar.c (ft_var_load_mvar): Updated.
(GX_FVar_Head): Remove `countSizePairs'; the corresponding data
field in the `MVAR' table is now reserved.
(fvar_fields): Updated.
2017-01-23 Werner Lemberg <wl@gnu.org>
[truetype] Avoid segfault for invalid variation data.
* src/truetype/ttgxvar.c (ft_var_load_item_variation_store): Assure
`itemCount' is not zero.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=441
2017-01-20 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c (TT_RunIns): Adjust loop detector limits.
2017-01-17 Werner Lemberg <wl@gnu.org>
* include/freetype/ttnameid.h: Updated to OpenType 1.8.1.
(TT_APPLE_ID_FULL_UNICODE): New macro.
(TT_MS_LANGID_BOSNIAN_BOSNIA_HERZ_CYRILLIC,
TT_MS_LANGID_UPPER_SORBIAN_GERMANY,
TT_MS_LANGID_LOWER_SORBIAN_GERMANY, TT_MS_LANGID_IRISH_IRELAND,
TT_MS_LANGID_INUKTITUT_CANADA_LATIN, TT_MS_LANGID_BASHKIR_RUSSIA,
TT_MS_LANGID_LUXEMBOURGISH_LUXEMBOURG,
TT_MS_LANGID_GREENLANDIC_GREENLAND, TT_MS_LANGID_MAPUDUNGUN_CHILE,
TT_MS_LANGID_MOHAWK_MOHAWK, TT_MS_LANGID_BRETON_FRANCE,
TT_MS_LANGID_OCCITAN_FRANCE, TT_MS_LANGID_CORSICAN_FRANCE,
TT_MS_LANGID_ALSATIAN_FRANCE, TT_MS_LANGID_YAKUT_RUSSIA,
TT_MS_LANGID_KICHE_GUATEMALA, TT_MS_LANGID_KINYARWANDA_RWANDA,
TT_MS_LANGID_WOLOF_SENEGAL, TT_MS_LANGID_DARI_AFGHANISTAN): New
macros.
(TT_MS_LANGID_SERBIAN_BOSNIA_HERZ_CYRILLIC): Fix value.
(TT_MS_LANGID_GERMAN_LIECHTENSTEIN, TT_MS_LANGID_CATALAN_CATALAN,
TT_MS_LANGID_CHINESE_MACAO, TT_MS_LANGID_SPANISH_SPAIN_MODERN_SORT,
TT_MS_LANGID_KOREAN_KOREA, TT_MS_LANGID_ROMANSH_SWITZERLAND,
TT_MS_LANGID_SLOVENIAN_SLOVENIA, TT_MS_LANGID_BASQUE_BASQUE,
TT_MS_LANGID_SETSWANA_SOUTH_AFRICA,
TT_MS_LANGID_ISIXHOSA_SOUTH_AFRICA,
TT_MS_LANGID_ISIZULU_SOUTH_AFRICA, TT_MS_LANGID_KAZAKH_KAZAKHSTAN,
TT_MS_LANGID_KYRGYZ_KYRGYZSTAN, TT_MS_LANGID_KISWAHILI_KENYA,
TT_MS_LANGID_TATAR_RUSSIA, TT_MS_LANGID_ODIA_INDIA,
TT_MS_LANGID_MONGOLIAN_PRC, TT_MS_LANGID_TIBETAN_PRC,
TT_MS_LANGID_WELSH_UNITED_KINGDOM, TT_MS_LANGID_GALICIAN_GALICIAN,
TT_MS_LANGID_SINHALA_SRI_LANKA, TT_MS_LANGID_TAMAZIGHT_ALGERIA,
TT_MS_LANGID_SESOTHO_SA_LEBOA_SOUTH_AFRICA, TT_MS_LANGID_YI_PRC,
TT_MS_LANGID_UIGHUR_PRC): New aliases.
Remove commented out code.
(TT_NAME_ID_LIGHT_BACKGROUND, TT_NAME_ID_DARK_BACKGROUND,
TT_NAME_ID_VARIATIONS_PREFIX): New macros.
(HAVE_LIMIT_ON_IDENTS): Remove macro (which was useless since many
years), use guarded long macros by default and define short versions
as aliases for the long ones.
2017-01-15 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_apply_var): Handle underline parameters
also.
2017-01-11 Werner Lemberg <wl@gnu.org>
* src/base/ftobjs.c (ft_open_face_internal): Improve tracing.
2017-01-11 Werner Lemberg <wl@gnu.org>
[truetype] Actually use metrics variation service.
* src/base/ftmm.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(ft_face_get_mvar_service): New auxiliary function to look up
metrics variation service.
(FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
FT_Set_Var_Blend_Coordinates): Call metrics variation service.
* src/truetype/ttobjs.c (tt_face_init): Use metrics variations for
named instances.
2017-01-11 Werner Lemberg <wl@gnu.org>
[truetype] Provide metrics variation service.
* include/freetype/internal/services/svmetric.h
(FT_Metrics_Adjust_Func): Reduce number of necessary parameters.
* src/truetype/ttgxvar.c: Include FT_LIST_H.
(tt_size_reset_iterator): New auxiliary function for...
(tt_apply_var): New function.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttdriver.c (tt_service_metrics_variations): Add
`tt_apply_mvar'.
* include/freetype/internal/ftserv.h (FT_ServiceCache): Add metrics
variation service.
2017-01-11 Werner Lemberg <wl@gnu.org>
[truetype] Parse `MVAR' table.
* src/truetype/ttgxvar.h (MVAR_TAG_XXX): New macros for MVAR tags.
(GX_Value, GX_MVarTable): New structures.
(GX_Blend): Add it.
* src/truetype/ttgxvar.c (GX_VALUE_SIZE, GX_VALUE_CASE,
GX_GASP_CASE): New macros.
(ft_var_get_value_pointer): New auxiliary function to get a pointer
to a value from various SFNT tables already stored in `TT_Face'.
(ft_var_load_mvar): New function.
(TT_Get_MM_Var): Call it.
(tt_done_blend): Updated.
2017-01-11 Werner Lemberg <wl@gnu.org>
[truetype] More preparations for MVAR support.
* src/truetype/ttobjs.c (tt_size_reset): Add argument to make
function only recompute ascender, descender, and height.
* src/truetype/ttobjs.h: Updated.
* src/truetype/ttdriver.c (tt_size_select, tt_size_request):
Updated.
2017-01-09 Werner Lemberg <wl@gnu.org>
[pcf] Disable long family names by default.
* include/freetype/config/ftoption.h
(PCF_CONFIG_OPTION_LONG_FAMILY_NAMES): Comment out.
2017-01-09 Werner Lemberg <wl@gnu.org>
[pcf] Make long family names configurable.
The change from 2016-09-29 was too radical (except for people using
the openSuSE GNU/Linux distribution). To ameliorate the situation,
PCF_CONFIG_OPTION_LONG_FAMILY_NAMES gets introduced which controls
the feature; if set, a new PCF property option
`no-long-family-names' can be used to switch this feature off.
* include/freetype/config/ftoption.h, devel/ftoption.h
(PCF_CONFIG_OPTION_LONG_FAMILY_NAMES): New option.
* include/freetype/ftpcfdrv.h: New header file (only containing
comments currently, used for building the documentation).
* include/freetype/config/ftheader.h (FT_PCF_DRIVER_H): New macro.
* src/pcf/pcf.h (PCF_Driver): Add `no_long_family_names' field.
* src/pcf/pcfdrivr.c: Include FT_SERVICE_PROPERTIES_H and
FT_PCF_DRIVER_H.
(pcf_property_set, pcf_property_get): New functions.
(pcf_service_properties): New service.
(pcf_services): Updated.
(pcf_driver_init) [PCF_CONFIG_OPTION_LONG_FAMILY_NAMES]: Handle
`no_long_family_names'.
* src/pcf/pcfread.c (pcf_load_font): Handle `no_long_family_names'
and PCF_CONFIG_OPTION_LONG_FAMILY_NAMES.
* docs/CHANGES: Updated.
2017-01-09 Werner Lemberg <wl@gnu.org>
[pcf] Introduce a driver structure.
To be filled later on with something useful.
* src/pcf/pcf.h (PCF_Driver): New structure.
* src/pcf/pcfdrivr.c (pcf_driver_init, pcf_driver_done): New dummy
functions.
(pcf_driver_class): Updated.
2017-01-08 Werner Lemberg <wl@gnu.org>
[truetype] Again some GX code shuffling.
We need this later on for MVAR also.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): Split off computing
an item store variation delta into...
(ft_var_get_item_delta): ...new function.
2017-01-08 Werner Lemberg <wl@gnu.org>
[truetype] Adjust font variation flags for MVAR.
* include/freetype/internal/tttypes.h (TT_FACE_FLAG_VAR_XXX):
Remove all flags related to MVAR; replace it with...
(TT_FACE_FLAG_VAR_MVAR): ...this new macro.
(TT_Face): Remove `mvar_support' field (which was still unused).
2017-01-06 Werner Lemberg <wl@gnu.org>
[truetype] More GX code shuffling.
We need this later on for MVAR also.
* src/truetype/ttgxvar.c (tt_done_blend): Split off handling of item
variation store into...
(ft_var_done_item_variation_store): ...new function.
2017-01-06 Werner Lemberg <wl@gnu.org>
[truetype] More generalization of GX stuff.
We need this later on for MVAR also.
* src/truetype/ttgxvar.c (ft_var_load_delta_set_index_mapping): Add
parameters for delta-set index mapping and item variation store.
(ft_var_load_item_variation_store): Add parameter for item variation
store.
s/hvarData/varData/.
Move allocation of `hvar_table' to...
(ft_var_load_hvar): ...this function.
Updated.
2017-01-06 Werner Lemberg <wl@gnu.org>
[truetype] Some GX structure renames for generalization.
We need this later on for MVAR also.
* src/truetype/ttgxvar.h (GX_HVarData): Renamed to...
(GX_ItemVarData): ...this.
(GX_HVarRegion): Renamed to...
(GX_VarRegion): ...this.
(GX_HVStore): Renamed to...
(GX_ItemVarStore): ...this.
(GX_WidthMap): Renamed to...
(GX_DeltaSetIdxMap): ...this.
(GX_HVarTable): Updated.
* src/truetype/ttgxvar.c: Updated.
2017-01-06 Werner Lemberg <wl@gnu.org>
[truetype] Code shuffling.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Split off loading of
item variation store and delta set index mapping into...
(ft_var_load_item_variation_store,
ft_var_load_delta_set_index_mapping): ...new functions.
2017-01-06 Werner Lemberg <wl@gnu.org>
[truetype] Add HVAR access without advance width map.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Handle case where
`offsetToAdvanceWidthMapping' is zero.
(tt_hadvance_adjust): Implement direct deltaSet access by glyph
index.
2017-01-06 Werner Lemberg <wl@gnu.org>
[pcf] Revise driver.
This commit improves tracing and handling of malformed fonts. In
particular, the changes to `pcf_get_properties' fix
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=379
* src/pcf/pcfread.c (tableNames): Use long names for better
readability.
(pcf_read_TOC): Allow at most 9 tables.
(pcf_get_properties): Allow at most 256 properties.
Limit strings array length to 256 * (65536 + 1) bytes.
Better tracing.
(pcf_get_metric): Trace metric data.
(pcf_get_metrics): Allow at most 65536 metrics.
Fix comparison of `metrics->ascent' and `metrics->descent' to avoid
potential overflow.
Better tracing.
(pcf_get_bitmaps): Allow at most 65536 bitmaps.
Better tracing.
(pcf_get_encodings, pcf_get_accel): Better tracing.
* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Don't trace `format' details.
These are now shown by `pcf_get_bitmaps'.
2017-01-04 Werner Lemberg <wl@gnu.org>
* src/pcf/pcfdrivr.c (PCF_Face_Init): Trace compression format.
2017-01-04 Werner Lemberg <wl@gnu.org>
[cff] More consistency checks for pure CFFs.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=378
* src/cff/cffload.c (cff_font_load): Check element number and size
of Name and Top DICT indices.
2017-01-04 Werner Lemberg <wl@gnu.org>
[cff, truetype] Minor tracing improvement.
* src/cff/cffobjs.c (cff_face_init), src/truetype/ttobjs.c
(tt_face_init): Indent first tracing message from SFNT driver.
2017-01-03 Werner Lemberg <wl@gnu.org>
[truetype] Various minor fixes.
* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Check instruction
size only if we do native hinting.
(TT_Load_Glyph): Trace returned error code.
* src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Trace
returned error code.
(tt_size_ready_bytecode): Don't run `prep' table if `fpgm' table is
invalid.
2017-01-03 Werner Lemberg <wl@gnu.org>
[sfnt] Don't fail if PCLT, EBLC (and similar tables) are invalid.
These tables are optional.
* src/sfnt/sfobjs.c (sfnt_load_face): Implement it.
2017-01-03 Werner Lemberg <wl@gnu.org>
* src/cff/cffparse.c (cff_parse_num): Simplify.
2017-01-03 Werner Lemberg <wl@gnu.org>
Various fixes for clang's undefined behaviour sanitizer.
* src/cff/cffload.c (FT_fdot14ToFixed): Fix casting.
(cff_blend_doBlend): Don't left-shift negative numbers.
Handle 5-byte numbers byte by byte to avoid alignment issues.
* src/cff/cffparse.c (cff_parse_num): Handle 5-byte numbers byte by
byte to avoid alignment issues.
* src/cid/cidload (cid_read_subrs): Do nothing if we don't have any
subrs.
* src/psaux/t1decode.c (t1_decode_parse_charstring): Fix tracing.
* src/tools/glnames.py (main): Put `DEFINE_PSTABLES' guard around
definition of `ft_get_adobe_glyph_index'.
* src/psnames/pstables.h: Regenerated.
* src/psnames/psmodule.c: Include `pstables.h' twice to get both
declaration and definition.
* src/truetype/ttgxvar.c (FT_fdot14ToFixed, FT_intToFixed): Fix
casting.
2017-01-01 Werner Lemberg <wl@gnu.org>
[cff] Handle multiple `blend' operators in a row correctly.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=368
* src/cff/cffload.c (cff_blend_doBlend): Adjust `parser->stack'
pointers into `subFont->blend_stack' after reallocation.
2017-01-01 Werner Lemberg <wl@gnu.org>
[sfnt] Return correct number of named instances for TTCs.
Without this patch, requesting information for face index N returned
the data for face index N+1 (or index 0).
* src/sfnt/sfobjs.c (sfnt_init_face): Correctly adjust `face_index'
for negative `face_instance_index' values.
2016-12-31 Werner Lemberg <wl@gnu.org>
*/*: Use hex numbers for errors in tracing messages.
2016-12-31 Werner Lemberg <wl@gnu.org>
[truetype] Check axis count in HVAR table.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=362
* src/truetype/ttgxvar.c (ft_var_load_hvar): Check axis count.
(ft_var_load_avar): Fix tracing message.
2016-12-30 Werner Lemberg <wl@gnu.org>
* Version 2.7.1 released.
=========================
Tag sources with `VER-2-7-1'.
* docs/VERSION.TXT: Add entry for version 2.7.1.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.7/2.7.1/, s/27/271/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.
* builds/unix/configure.raw (version_info): Set to 19:0:13.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
2016-12-30 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Replace `rand' with an xorshift algorithm.
* src/tools/ftfuzzer/ftfuzzer.cc: Don't include `stdlib.h'.
(Random): Implement and use a 32bit `xorshift' algorithm.
2016-12-30 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Restrict number of tested bitmap strikes.
Malformed fonts often have large values for the number of bitmap
strikes, and FreeType doesn't check the validity of all bitmap
strikes in advance.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=353
* src/tools/ftfuzzer/ftfuzzer.cc: Include `stdlib.h' for `rand'.
(Random): Small class to provide n randomly selected numbers
(without repetition) out of the value set [1,N].
(LLVMFuzzerTestOneInput): Use it to test only up to 10 bitmap
strikes.
2016-12-29 Werner Lemberg <wl@gnu.org>
[truetype] Variation font API stability issues.
Make some functions work before a call to `TT_Set_MM_Blend'.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): Exit immediately if
we don't blend.
(TT_Get_MM_Blend, TT_Get_Var_Design): Return default values if we
don't blend.
2016-12-29 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Check axis data.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=348
2016-12-29 Werner Lemberg <wl@gnu.org>
[truetype] Tracing fixes.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): Emit correct
information.
(TT_Set_Var_Design): Fix typo.
(TT_Get_Var_Design): Fix typos.
2016-12-29 Werner Lemberg <wl@gnu.org>
*/*: Use `0.5f' for tracing 16.16 numbers.
2016-12-29 Werner Lemberg <wl@gnu.org>
[pcf] Protect against gzip bombs.
Fix suggested by Kostya; reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=345
* src/pcf/pcfread.c (pcf_read_TOC): Limit number of TOC entries to
1024.
2016-12-28 Werner Lemberg <wl@gnu.org>
[psnames] Only declare, not define, data in `pstables.h' (#49949).
Pdfium includes `pstables.h' a second time; moving the definition
from `pstables.h' to `psmodule.c' saves more than 60kByte data
segment space for this case.
* src/tools/glnames.py (StringTable::dump,
StringTable::dump_sublist, dump_encoding, dump_array): Emit
additional code to only define tables if `DEFINE_PS_TABLES' is set.
* src/psnames/pstables.h: Regenerated.
* src/psnames/psmodule.c (DEFINE_PS_TABLES): Define.
2016-12-28 Werner Lemberg <wl@gnu.org>
[cff] Catch `blend' op in non-variant fonts.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=334
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>: Don't
allow `blend' op for non-variant fonts.
2016-12-28 Werner Lemberg <wl@gnu.org>
[cff] Better check of number of blends.
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>,
src/cff/cffparse.c (cff_parse_blend): Compare number of blends with
stack size.
2016-12-27 Werner Lemberg <wl@gnu.org>
Documentation updates.
* docs/CHANGES: Add missing information.
* docs/formats.txt: Rewritten and updated.
2016-12-27 Werner Lemberg <wl@gnu.org>
[truetype, type1] Implement `FT_Get_Var_Design_Coordinates'.
* src/truetype/ttgxvar.c (TT_Get_Var_Design): Implement.
(TT_Set_Var_Design): Fix tracing.
* src/type1/t1load.c (T1_Get_Var_Design): Implement.
2016-12-24 Werner Lemberg <wl@gnu.org>
* src/truetype/ttpload.c (tt_face_load_hdmx): Ignore `version'.
Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 Werner Lemberg <wl@gnu.org>
* src/sfnt/ttsbit.c (tt_face_load_sbit): Allow more version values.
Some fonts seem to have the `version' field in the wrong byte order.
Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 Werner Lemberg <wl@gnu.org>
* src/truetype/ttpload.c (tt_face_load_loca): Sanitize table length.
This trivial fix allows us to accept more fonts.
Problem reported by 張俊芝 <418092625@qq.com>.
2016-12-24 Werner Lemberg <wl@gnu.org>
* src/sfnt/sfobjs.c (sfnt_init_face): Fix tracing.
2016-12-22 Werner Lemberg <wl@gnu.org>
* CMakeLists.txt: Make it work with cmake 2.8.11.2 (#49909).
2016-12-22 Werner Lemberg <wl@gnu.org>
Ensure used preprocessor symbols are defined (#49790).
* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Check `__GNUC__', `__IBMC__',
and `__SUNPRO_C' correctly.
2016-12-22 Werner Lemberg <wl@gnu.org>
* src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Check `count'.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=308
2016-12-22 Werner Lemberg <wl@gnu.org>
[cff] Protect against invalid `vsindex' and `blend' values.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=305
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVSINDEX,
cf2_cmdBLEND>: Implement it.
2016-12-22 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Always use Adobe CFF engine.
* src/tools/ftfuzzer/ftfuzzer.cc (FT_Global::FT_Global): Implement
it.
2016-12-21 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.
I should really stop coding late in the evening...
Thanks again to Ben for checking.
2016-12-21 Werner Lemberg <wl@gnu.org>
[autofit] Support variation fonts.
(This ChangeLog entry was added later on.)
* src/autofit/afglobal.c (af_face_globals_free): Remove useless
code.
* src/base/ftmm.c (FT_Set_MM_Design_Coordinates,
* FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
FT_Set_Var_Blend_Coordinates): Finalize
auto-hinter data to enforce recomputation. Note that this is a
brute-force method which should be improved.
2016-12-21 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.
Don't apply deltas twice for non-phantom points.
Spotted by Ben Wagner.
2016-12-21 Werner Lemberg <wl@gnu.org>
[cff, truetype] Another try for #49829.
* src/cff/cffdrivr.c: Don't include
`FT_SERVICE_METRICS_VARIATIONS_H'.
(cff_get_advances): Use `ttface->variation_support'.
* src/truetype/ttdriver.c (tt_get_advances): Use
`ttface->variation_support'.
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Use `ttface->variation_support'.
2016-12-21 Werner Lemberg <wl@gnu.org>
[truetype, sfnt] Introduce font variation flags to `TT_Face'.
* include/freetype/internal/tttypes.h (TT_FACE_FLAG_VAR_XXX):
New macros describing available functionality of various OpenType
tables related to font variation.
(TT_Face): New fields `variation_support' and `mvar_support',
replacing and extending `use_fvar'.
* src/sfnt/sfobjs.c (sfnt_init_face, sfnt_load_face): Use
`variation_support'.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Set `variation_support'
field.
(TT_Vary_Apply_Glyph_Deltas): Updated.
2016-12-21 Werner Lemberg <wl@gnu.org>
[base] Improve sanity check for Mac resources (#49888).
* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
positive.
2016-12-20 Werner Lemberg <wl@gnu.org>
[base] More sanity checks for Mac resources.
We use
https://github.com/kreativekorp/ksfl/wiki/Macintosh-Resource-File-Format
and
https://developer.apple.com/legacy/library/documentation/mac/pdf/MoreMacintoshToolbox.pdf#page=151
as references.
* include/freetype/internal/ftrfork.h (FT_RFork_Ref): Use FT_Short
for `res_id'.
* src/base/ftrfork.c (FT_Raccess_Get_HeaderInfo): Extract map length
and use it to improve sanity checks.
Follow the specification more closely;in particular, all data types
are signed, not unsigned.
(FT_Raccess_Get_DataOffsets): Follow the specification more closely;
in particular, all data types are signed, not unsigned.
Add some sanity checks.
2016-12-20 Werner Lemberg <wl@gnu.org>
[truetype] Improve logic for getting fast advance widths.
* src/cff/cffdrivr.c (cff_get_advances), src/truetype/ttdriver.c
(tt_get_advances): Use `is_default_instance' for test; this gets
recomputed after changing blend coordinates.
2016-12-20 Ben Wagner <bungeman@google.com>
Werner Lemberg <wl@gnu.org>
[truetype] Fix linear metrics of GX variation fonts (#49829).
When asking for an unhinted non-default variations,
`linearVertAdvance' is currently the value from the `hmtx' table
instead of the actual value after applying the variation. `HVAR'
support fixes this, but fonts will exist without that table and will
need sane fallback.
Problem also reported as
https://bugs.chromium.org/p/skia/issues/detail?id=5917
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Implement linear advance adjustments if `HVAR'
or `VVAR' tables are missing.
2016-12-20 Werner Lemberg <wl@gnu.org>
[cff, truetype] Fast advance width retrieval for fonts with HVAR.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Don't handle MM.
* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(cff_get_advances): Test for HVAR and VVAR.
* src/truetype/ttdriver.c (tt_get_advances): Test for HVAR and VVAR.
2016-12-18 Werner Lemberg <wl@gnu.org>
[base] Fix invalid mac font recursion.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=304
* src/base/ftobjs.c (FT_Open_Face): Code moved to...
(ft_open_face_internal): ... this function.
Add a parameter to control whether we try special Mac font handling
in case of failure.
(FT_Open_Face, FT_New_Face, FT_New_Memory_Face,
open_face_from_buffer): Use `ft_open_face_internal'.
2016-12-18 Werner Lemberg <wl@gnu.org>
* src/cff/cffobjs.c (cff_face_init): Make named instances work.
2016-12-18 Werner Lemberg <wl@gnu.org>
[truetype, cff] Extend `get_var_blend' function of MM service.
In particular, we need access to named instance data.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
Add argument for `FT_MM_Var'.
* src/cff/cffload.c (cff_get_var_blend): Updated.
* src/cff/cffload.h: Updated.
* src/cff/cf2ft.c (cf2_getNormalizedVector): Updated.
* src/truetype/ttgxvar.c (tt_get_var_blend): Updated.
Accept value `NULL' for arguments.
* src/truetype/ttgxvar.h: Updated.
2016-12-18 Werner Lemberg <wl@gnu.org>
[sfnt] Handle `fvar' with zero axes as a non-MM font.
This is better behaviour than exiting with an error.
* include/freetype/internal/tttypes.h (TT_Face): Add `use_fvar'
field.
* src/sfnt/sfobjs.c (sfnt_init_face): Compute `use_fvar', also
updating the validation code.
Use `use_fvar' to compute FT_FACE_FLAG_MULTIPLE_MASTERS.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Remove `fvar' validation
code.
2016-12-18 Werner Lemberg <wl@gnu.org>
Minor GX code shuffling.
* include/freetype/internal/tttypes.h (TT_Face): Move
`is_default_instance' into TT_CONFIG_OPTION_GX_VAR_SUPPORT
block.
* src/sfnt/sfobjs.c (sfnt_init_face): Updated.
* src/truetype/ttgload.c (IS_DEFAULT_INSTANCE): New macro.
(TT_Load_Glyph): Use it.
2016-12-18 Werner Lemberg <wl@gnu.org>
[cff] Better handling of non-CFF font formats.
* src/cff/cffload.c (cff_font_load): Pure CFFs don't have a
signature, so return `FT_Err_Unknown_File_Format' more often.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/cff/cffload.c (cff_build_blend_vector): Remove redundant code.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/truetype/ttobjs.c (tt_face_init): Simplify conditional code.
2016-12-17 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Various sanitizing fixes.
* src/sfnt/sfobjs.c (sfnt_init_face): If the axis count in `fvar' is
zero, set `num_instances' to zero.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Handle `fvar' table with
zero axes as invalid.
* src/truetype/ttobjs.c (tt_face_init): Improve logic of loading
`loca', `cvt', `fpgm', and `prep' table.
2016-12-17 Werner Lemberg <wl@gnu.org>
Improve tracing of `FT_Open_Face'.
* src/base/ftobjs.c (FT_Open_Face): Return info on number of
available faces and numbered instances, or the indices of the
requested face and numbered instance.
* src/sfnt/sfobjs. (sfnt_open_font): Trace number of subfonts.
2016-12-17 Werner Lemberg <wl@gnu.org>
* src/cff/cffload.c (cff_load_private_dict): Always init `blend'.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=295
2016-12-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix `cvar' sanity test.
Reported by Dave Arnold.
* src/truetype/ttgxvar.c (tt_face_vary_cvt): Use tuple count mask.
2016-12-16 Werner Lemberg <wl@gnu.org>
[cff, truetype] Remove compiler warnings; fix `make multi'.
* src/cff/cf2font.h: Include `cffload.h'.
* src/cff/cffload.c: Include FT_MULTIPLE_MASTERS_H and
FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_vstore_load): Eliminate `vsSize'.
(cff_load_private_dict): Tag as `FT_LOCAL_DEF'.
* src/cff/cffload.h: Include `cffobjs.h'.
Provide declaration for `cff_load_private_dict'.
* src/truetype/ttgxvar.c (ft_var_load_hvar): Eliminate
`minorVersion' and `map_offset'.
2016-12-16 Werner Lemberg <wl@gnu.org>
[cff] Fix heap buffer overflow (#49858).
* src/cff/cffparse.c (cff_parser_run): Add one more stack size
check.
2016-12-15 Werner Lemberg <wl@gnu.org>
Fix clang warnings.
* src/cff/cffload.c (cff_blend_doBlend): Add cast.
(cff_subfont_load): Set `error' correctly.
* src/sfnt/ttmtx.c (tt_face_get_metrics): Typo.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Implement CFF2 support (2/2).
The font variation code. All parts dependent on the GX code in the
`truetype' module are guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
In other words, you can still compile the `cff' module without
defining TT_CONFIG_OPTION_GX_VAR_SUPPORT (which brings you CFF2
support without font variation).
* src/cff/cf2font.c (cf2_font_setup): Add support for font
variation.
* src/cff/cf2font.h (CF2_Font): Add fields for variation data.
* src/cff/cf2ft.c (cf2_free_instance): Free blend data.
(cf2_getVStore, cf2_getNormalizedVector): New functions.
* src/cff/cf2ft.h: Updated.
* src/cff/cf2intrp.c: Include `cffload.h'.
(cf2_cmdRESERVED_15, cf2_cmdRESERVED_16): Replace with...
(cf2_cmdVSINDEX, cf2_cmdBLEND): ... this new enum values.
(cf2_doBlend): New function.
(cf2_interpT2CharString): Handle `vsindex' and `blend' opcodes.
* src/cff/cffload.c (FT_fdot14ToFixed): New macro.
(cff_vstore_done, cff_vstore_load): New functions.
(cff_blend_clear, cff_blend_doBlend, cff_blend_build_vector,
cff_blend_check_vector): New functions.
(cff_load_private_dict): Add arguments for blend vector.
Handle blend data.
(cff_subfont_load, cff_subfont_done): Updated.
(cff_font_load): Handle CFF2 variation store data.
(cff_font_done): Updated.
* src/cff/cffload.h: Include `cffparse.h'.
Updated.
* src/cff/cffobjs.c (cff_face_done): Updated.
* src/cff/cffparse.c: Include `cffload.h'.
(cff_parse_num): Handle internal value 255.
(cff_parse_vsindex, cff_parse_blend): New functions.
(CFF_FIELD_BLEND): New macro.
(cff_parser_run): Updated.
* src/cff/cffparse.h (cff_kind_blend): New enum value.
* src/cff/cfftoken.h: Handle `vstore', `vsindex', and `blend'
dictionary values.
* src/cff/cfftypes.h (CFF_VarData, CFF_AxisCoords, CFF_VarRegion,
CFF_VStore, CFF_Blend): New structures.
(CFF_FontRecDict): Add `vstore_offset' field.
(CFF_Private): Add `vsindex' field.
(CFF_SubFont): Add fields for blend data.
(CFF_Font): Add `vstore' field.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): `CFF2' is equal to `gvar',
since glyph variation data is directly embedded.
(TT_Set_MM_Blend): Don't load `gvar' table for CFF2 fonts.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Implement CFF2 support (1/2).
This commit does not contain the blend code for font variation
support, which follows in another commit.
You should ignore whitespace while inspecting this commit.
* include/freetype/internal/tttypes.h (TT_Face): Add `isCFF2'
member.
* src/cff/cf2font.h (CF2_Font): Add `isCFF2' member.
* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Handle `isCFF2'
flag.
(cf2_getMaxstack): New function.
* src/cff/cf2ft.h: Updated.
* src/cff/cf2intrp.c (cf2_escRESERVED_38): New enum.
(cf2_interpT2CharString): Handle CFF2 differences.
Add tracing message for errors.
* src/cff/cffdrivr.c (cff_get_glyph_name, cff_get_name_index):
Update for CFF2.
* src/cff/cffload.c (FT_FIXED_ONE): New macro.
(cff_index_init, cff_index_load_offsets, cff_index_access_element,
cff_index_get_name, cff_ft_select_get, cff_load_private_dict,
cff_subfont_load, cff_font_load): Handle CFF2.
* src/cff/cffload.h: Updated.
* src/cff/cffobjs.c (cff_face_init): Handle CFF2.
* src/cff/cffparse.c (cff_parse_maxstack): New function.
(CFFCODE_TOPDICT, CFFCODE_PRIVATE): Removed
* src/cff/cffparse.h (CFF2_MAX_STACK, CFF2_DEFAULT_STACK): New
macros.
(CFF2_CODE_TOPDICT, CFF2_CODE_FONTDICT, CFF2_CODE_PRIVATE): New
macros.
* src/cff/cfftoken.h: Add fields for CFF2 dictionaries (but no blend
stuff).
* src/cff/cfftypes.h (CFF_Index): Add `hdr_size' field.
(CFF_FontRecDict): Add `maxstack' field.
(CFF_Private): Add `subfont' field.
(CFF_Font): Add `top_dict_length' and `cff2' fields.
* src/sfnt/sfobjs.c (sfnt_load_face): Handle `CFF2' table.
2016-12-15 Werner Lemberg <wl@gnu.org>
Dave Arnold <darnold@adobe.com>
[truetype] Provide HVAR advance width variation as a service.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Prevent
double adjustment of advance width.
* src/sfnt/ttmtx.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_face_get_metrics): Apply metrics variations.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[truetype] Provide function to apply `HVAR' advance width variation.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* src/truetype/ttgxvar.c (tt_hadvance_adjust): New function.
* src/truetype/ttgxvar.h: Updated.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[truetype] Add `HVAR' table parsing.
Note that this is not complete yet; it only handles advance width
variation.
Activation of the code follows in another commit.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/ftmm.h (FT_Var_Named_Style): Add `psid' member.
* src/truetype/ttgxvar.h (GX_HVarData, GX_AxisCoords, GX_HVarRegion,
GX_HVStore, GX_WidthMap): New auxiliary structures for...
(GX_HVarTable): ... HVAR main structure.
(GX_BlendRec): Add data for HVAR loading.
* src/truetype/ttgxvar.c (FT_FIXED_ONE, FT_fdot14ToFixed,
FT_intToFixed, FT_fixedToInt): New macros.
(ft_var_load_hvar): New function.
(TT_Get_MM_Var): Updated.
(tt_done_blend): Deallocate HVAR data.
2016-12-15 Dave Arnold <darnold@adobe.com>
[cff] Extend number parsing.
The forthcoming CFF2 support needs a dynamic parsing limit.
* src/cff/cffparse.c (cff_parse_num, do_fixed, cff_parse_fixed,
cff_parse_fixed_scaled, cff_parse_fixed_dynamic): Add argument for
parser.
(cff_parse_font_matrix, cff_parse_font_bbox, cff_parse_private_dict,
cff_parse_multiple_master, cff_parse_cid_ros, cff_parser_run): Updated.
* src/cff/cffparse.h (cff_parse_num): Export locally.
2016-12-15 Dave Arnold <darnold@adobe.com>
[cff] Implement dynamic stack size for Adobe engine.
This also adds `cf2_stack_setReal' and `cf2_stack_pop', needed for
the forthcoming CFF2 support.
* src/cff/cf2stack.c (cf2_stack_init): Add argument for stack size.
(cf2_stack_free): Deallocate stack.
(cf2_stack_count, cf2_stack_pushInt, cf2_stack_pushFixed,
cf2_stack_popInt, cf2_stack_popFixed, cf2_stack_getReal,
cf2_stack_clear): Updated.
(cf2_stack_setReal, cf2_stack_pop): New functions.
* src/cff/cf2stack.h (CF2_Stack): Add `stackSize' member.
Update function declarations.
* src/cff/cf2intrp.c (cf2_interpT2CharString): Updated.
* src/cff/cffparse.c (cff_parser_init): Add parameter for stack
size; return error code.
(cff_parser_done): New function.
(cff_parser_run): Updated.
* src/cff/cffparse.h (CFF_Parser): Add `stackSize' member and make
`stack' a pointer.
Update function declarations.
* src/cff/cffload.c (cff_load_private_dict, cff_subfont_load):
Updated.
2016-12-15 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[cff] Code shuffling.
* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
fields.
* src/cff/cffload.c (cff_subfont_load): Change last argument to
`CFF_Font'
Split off parsing of private dictionary into...
(cff_load_private_dict): ...this new function.
(cff_font_load): Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Add framework for Metrics Variations service.
No effect yet; service functions will be implemented later on.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/services/svmetric.h: New file.
* include/freetype/internal/ftserv.h
(FT_SERVICE_METRICS_VARIATIONS_H): New macro.
* include/freetype/internal/tttypes.h (TT_Face): New field `var'.
* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(sfnt_init_face): Initialize `face->var'.
* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
(tt_service_metrics_variations): New service.
(tt_services): Updated.
* src/truetype/ttpic.h: Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
[cff] Add Multiple Masters service.
The code simply uses the MM functions from the `truetype' module.
Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
* include/freetype/internal/tttypes.h (TT_Face): New field `mm'.
* src/cff/cffdrivr.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(cff_set_mm_blend, cff_get_mm_blend, cff_get_mm_var,
cff_set_var_design, cff_get_var_design): New functions.
(cff_service_multi_masters): New service.
(cff_services): Updated.
* src/cff/cffload.c (cff_get_var_blend, cff_done_blend): New
functions.
* src/cff/cffload.h: Updated.
* src/cff/cffpic.h (CFF_SERVICE_MULTI_MASTERS_GET): New macro.
* src/sfnt/sfobjs.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
(sfnt_init_face): Initialize `face->mm'.
2016-12-14 Werner Lemberg <wl@gnu.org>
Extend functionality of `ft_module_get_service'.
It can now differentiate between local and global searches.
* src/base/ftobjs.c (ft_module_get_service): Add `global' argument.
(FT_Get_TrueType_Engine_Type): Updated.
* src/cff/cffdrivr.c (cff_get_ps_name, cff_get_cmap_info): Updated.
* include/freetype/internal/ftobjs.h: Updated.
* include/freetype/internal/ftserv.h (FT_FACE_FIND_GLOBAL_SERVICE):
Updated.
2016-12-14 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_get_var_blend): Fix compiler warning.
2016-12-14 Dave Arnold <darnold@adobe.com>
Werner Lemberg <wl@gnu.org>
[sfnt, cff] Minor preparations.
* include/freetype/tttags.h (TTAG_CFF2, TTAG_HVAR, TTAG_MVAR,
TTAG_VVAR): New SFNT table tags.
* src/cff/cf2fixed.h (CF2_FIXED_ONE, CF2_FIXED_EPSILON): Add cast.
2016-12-10 Werner Lemberg <wl@gnu.org>
[truetype, type1] Add `get_var_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.
* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
New typedef.
(MultiMasters): Add `get_var_blend'.
(FT_Service_MultiMasters): Updated.
* src/truetype/ttgxvar.c (tt_get_var_blend): New function.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-10 Werner Lemberg <wl@gnu.org>
[truetype, type1] Add `done_blend' to MM service.
For internal use; we want to share code between the forthcoming CFF2
support and TrueType.
* include/freetype/internal/services/svmm.h (FT_Done_Blend_Func):
New typedef.
(MultiMasters): Add `done_blend'.
(FT_Service_MultiMasters): Updated.
* src/truetype/ttgxvar.c (tt_done_blend): Use `TT_Face' as argument.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttobjs.c (TT_Face_Done): Updated.
* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
* src/type1/t1driver.c (t1_service_multi_masters): Updated.
2016-12-09 Werner Lemberg <wl@gnu.org>
[sfnt] Revert change from 2016-12-08.
I missed the functionality of `ft_module_get_service', which makes
the change unnecessary.
2016-12-08 Werner Lemberg <wl@gnu.org>
Add framework to support services with 8 functions.
We will need this for CFF variation font support.
* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC8):
New macro.
2016-12-08 Werner Lemberg <wl@gnu.org>
[sfnt] Add `get_glyph_name' and `get_name_index' to SFNT interface.
CFF2 fonts will need access to those two functions.
* include/freetype/internal/sfnt.h: Include FT_SERVICE_GLYPH_DICT_H.
(SFNT_Interface): Add `get_glyph_name' and `get_name_index' members.
(FT_DEFINE_SFNT_INTERFACE): Updated.
* src/sfnt/sfdriver.c (sfnt_get_glyph_name, sfnt_get_name_index):
Fix signatures to exactly correspond to the glyph dict service
function typedefs.
(sfnt_interface): Updated.
2016-12-06 Dave Arnold <darnold@adobe.com>
Add `FT_Get_Var_Design_Coordinates' function.
Note that the low-level functions aren't implemented yet.
* include/freetype/ftmm.h: Declare.
* include/freetype/internal/services/svmm.h
(FT_Get_Var_Design_Func): New typedef.
(MultiMasters): New MM service function `get_var_design'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.
* src/base/ftmm.c (FT_Get_Var_Design_Coordinates): Implement.
* src/truetype/ttdriver.c: Updated.
* src/truetype/ttgxvar.c (TT_Get_Var_Design): New dummy function to
handle `get_var_design' service.
* src/truetype/ttgxvar.h: Updated.
* src/type1/t1driver.c: Updated.
* src/type1/t1load.c (T1_Get_Var_Design): New dump function to
handle `get_var_design' service.
* src/type1/t1load.h: Updated.
2016-12-06 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_subrs): Fix memory leak.
The `subrs' keyword might erroneously occur multiple times.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=231
2016-12-01 Werner Lemberg <wl@gnu.org>
[gzip] Improve building with external zlib (#49673).
Building FreeType with external zlib 1.2.8 makes msvc 14 stop with
the following error.
ftgzip.c
zlib-1.2.8\zlib.h(86): error C2061:
syntax error: identifier 'z_const'
zlib-1.2.8\zlib.h(94): error C2054:
expected '(' to follow 'z_const'
zlib-1.2.8\zlib.h(94): error C2085:
'msg': not in formal parameter list
...
zlib-1.2.8\zlib.h(877): fatal error C1003:
error count exceeds 100; stopping compilation
The error happens because FreeType keeps an own copy of zlib-1.1.4
under `src/gzip'. When building `src/gzip/ftgzip.c' with
FT_CONFIG_OPTION_SYSTEM_ZLIB defined, it uses
#include <zlib.h>
which correctly finds an external `zlib.h', but `zlib.h' itself has
a line
#include "zconf.h"
which makes Visual Studio 2015 find `src/gzip/zconf.h' while
compiling the files in `src/gzip'.
* src/gzip/zconf.h: Rename to...
* src/gzip/ftzconf.h: ... this.
* src/gzip/zlib.h, src/gzip/rules.mk (GZIP_DRV_SRCS): Updated.
2016-12-01 Oleksandr Chekhovskyi <oleksandr.chekhovskyi@gmail.com>
[autofit] Fix Emscripten crash (patch #9180).
Function calls through pointers must use a matching signature to
work on Emscripten, since such calls are dispatched through lookup
tables grouped by signature.
* src/autofit/aftypes.h (AF_WritingSystem_ApplyHintsFunc): Fix
typedef.
2016-11-29 Werner Lemberg <wl@gnu.org>
[smooth] Revert previous commit. Already fixed with 6ca54c64.
2016-11-29 Werner Lemberg <wl@gnu.org>
[smooth] Avoid conditional jump on uninitialized value (#49711).
* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.
2016-11-27 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Code shuffling.
Also improve some comments and remove unused code.
No functional change.
* src/autofit/afloader.c (af_loader_load_g): Merged with...
(af_loader_load_glyph): ...this function.
Split off emboldening code into...
(af_loader_embolden_glyph_in_slot): ... this function.
2016-11-17 Werner Lemberg <wl@gnu.org>
Better support of LLP64 systems with gcc (and clang).
* builds/unix/configure.raw: Call `AC_TYPE_LONG_LONG_INT'.
* builds/unix/ftconfig.in (FT_LONG64): Enable for LLP64 systems (and
suppress warnings) even without `FT_CONFIG_OPTION_FORCE_INT64'.
2016-11-10 Werner Lemberg <wl@gnu.org>
Fix `lcd_weights' array size.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Do it.
Reported by Nikolaus.
2016-11-06 Werner Lemberg <wl@gnu.org>
* src/base/ftobjs.c (FT_Render_Glyph_Internal): Fix tracing.
2016-11-06 Werner Lemberg <wl@gnu.org>
[sfnt] Improve FT_LOAD_BITMAP_METRICS_ONLY for `sbix' format.
It's unavoidable to call the PNG engine, but to get the metrics it
is sufficient to read the PNG image's header only.
* src/sfnt/pngshim.c (Load_SBit_Png): Add argument to control the
allocation of the glyph slot.
* src/sfnt/pngshim.h: Updated.
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_png,
tt_face_load_sbix_image, tt_face_load_sbit_image): Updated.
2016-11-06 Werner Lemberg <wl@gnu.org>
[sfnt] Speed up `sbix' lookup.
This also fixes a bug introduced in 2016-10-01 which prevents
display of embedded bitmap fonts that use the `sbix' format.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Store `sbix' size and
offset also in `ebdt_size' and `ebdt_start', respectively. This
makes the test for an embedded bitmap data table succeed for this
format.
(tt_face_load_strike_metrics) <TT_SBIT_TABLE_TYPE_SBIX>: Use
`ebdt_size' and `ebdt_start'
(tt_face_load_sbix_image): Ditto.
2016-11-06 Seigo Nonaka <nona@google.com>
Werner Lemberg <wl@gnu.org>
Introduce a way of quickly retrieving (embedded) bitmap metrics.
`FT_Load_Glyph' doesn't generate a bitmap for a non-bitmap glyph
until the user calls `FT_Render_Glyph'. However, it always
allocates memory for bitmaps and copies or decodes the contents of a
bitmap glyph, which can be quite slow for PNG data.
* include/freetype/freetype.h (FT_LOAD_BITMAP_METRICS_ONLY): New
macro.
* src/base/ftobjs.c (FT_Load_Glyph): Unset FT_LOAD_RENDER if
FT_LOAD_BITMAP_METRICS_ONLY is used.
* src/sfnt/ttsbit.c (tt_sbit_decoder_alloc_bitmap,
tt_sbit_decoder_load_bitmap): Add argument to control allocation of
the glyph slot.
(tt_sbit_decoder_load_image, tt_sbit_decoder_load_compound,
tt_face_load_sbit_image): Updated.
* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Quickly exit if
`FT_LOAD_BITMAP_METRICS_ONLY' is set.
* src/pfr/pfrsbit.c, src/pfr/pfrsbit.h (pfr_slot_load_bitmap): Add
argument to control allocation of the glyph slot.
* src/pfr/pfrobjs (pfr_slot_load): Updated.
* src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.
* docs/CHANGES: Updated.
2016-11-06 Werner Lemberg <wl@gnu.org>
Synchronize with gnulib (#49448).
* include/freetype/config/ftconfig.h, builds/unix/ftconfig.in,
builds/vms/ftconfig.h (FT_TYPEOF): Update code to use definition in
current version of `intprops.h'.
Other minor synchronization to reduce code differences between the
three files.
2016-11-03 Behdad Esfahbod <behdad@behdad.org>
[truetype] Clamp variation requests to valid range.
This is required by OpenType 1.8; it also avoids rounding surprises.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Clamp design coordinates
outside of the allowed range to always stay within the range instead
of producing an error.
2016-10-29 Werner Lemberg <wl@gnu.org>
[truetype] Remove clang warnings.
* src/truetype/ttinterp.h (TT_ExecContextRec): Using `FT_ULong' for
loop counter handling.
* src/truetype/ttinterp.c: Updated.
(Ins_SCANTYPE): Use signed constant.
(TT_RunIns): Ensure `num_twilight_points' is 16bit.
2016-10-27 Werner Lemberg <wl@gnu.org>
[truetype] Fix commit from 2014-11-24.
Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.
* src/truetype/ttpload.c (tt_face_load_hdmx): Fix file checking
logic.
2016-10-26 Werner Lemberg <wl@gnu.org>
Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.
* include/freetype/ftmm.h: Declare.
* include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
New typedef.
(MultiMasters): New MM service function `get_mm_blend'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.
* src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
FT_Get_Var_Blend_Coordinates): Implement.
* src/truetype/ttdriver.c: Updated.
* src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/truetype/ttgxvar.h: Updated.
* src/type1/t1driver.c: Updated.
* src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/type1/t1load.h: Updated.
* docs/CHANGES: Document.
2016-10-26 Werner Lemberg <wl@gnu.org>
* src/type1/t1load.c (parse_subrs): Fix limit check.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81
2016-10-25 Alexei Podtelezhnikov <apodtele@gmail.com>
[cff] Correct cmap format reporting (#24819).
* src/cff/cffdrivr.c (cff_get_cmap_info): Throw an error on synthetic
charmap instead of guessing its format and language.
2016-10-22 Werner Lemberg <wl@gnu.org>
[truetype] Fix SCANTYPE instruction (#49394).
* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.
2016-10-22 Werner Lemberg <wl@gnu.org>
[sfnt] Improve handling of invalid post 2.5 tables [#49393].
* src/sfnt/ttpost.c (load_format_25): We need at least a single
table entry.
2016-10-14 Werner Lemberg <wl@gnu.org>
[truetype] Fix handling of `cvar' table data.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53
* src/truetype/ttgxvar.c (tt_face_vary_cvt): Ignore invalid CVT
indices.
2016-10-11 Werner Lemberg <wl@gnu.org>
[psaux] Fix handling of invalid flex subrs.
Problem reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52
* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_callothersubr>: Set `flex_state' after error checking.
2016-10-11 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (tt_done_blend): Fix deallocation.
2016-10-08 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c (cid_face_open): Properly propagate `error'.
2016-10-08 Werner Lemberg <wl@gnu.org>
[cid] Fix parsing of subr offsets.
Bug introduced 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one error.
2016-10-01 Werner Lemberg <wl@gnu.org>
[sfnt] Disable bitmap strikes if we don't have a bitmap data table.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Check whether we have
a bitmap data table.
2016-10-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Remove impossibility.
* src/smooth/ftgrays.c (TWorker): Rearrange fields.
(gray_convert_glyph): Remove impossible condition and clean up.
2016-09-29 Werner Lemberg <wl@gnu.org>
[pcf] Enrich family name with foundry name and glyph width info.
This is a very old patch from openSuSE (from 2006, submitted to
FreeType in 2011) that I forgot to apply.
https://build.opensuse.org/package/view_file/openSUSE:Factory/freetype2/freetype2-bitmap-foundry.patch
Prepend the foundry name plus a space to the family name. There are
many fonts just called `Fixed' which look completely different, and
which have nothing to do with each other. When selecting `Fixed' in
KDE or Gnome one gets results that appear rather random, the style
changes often if one changes the size and one cannot select some
fonts at all.
We also check whether we have `wide' characters; all put together,
we get family names like `Sony Fixed' or `Misc Fixed Wide'.
* src/pcf/pcfread.c (pcf_load_font): Implement it.
* docs/CHANGES: Document it.
2016-09-29 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Speed up.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Don't
check for embedded bitmaps if we have a non-default instance.
2016-09-29 Werner Lemberg <wl@gnu.org>
[truetype] Disallow bitmap strikes for non-default instances.
Also speed up access of default instances if GX variations are
active.
* include/freetype/internal/tttypes.h (TT_FaceRec): Add
`is_default_instance' member.
* src/sfnt/sfobjs.c (sfnt_init_face): Initialize
`is_default_instance'.
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Add test for default instance.
(TT_Load_Glyph): Load embedded bitmaps for default instance only.
* src/truetype/ttgxvar.c (TT_Set_MM_Blend): Compute
`is_default_instance'.
2016-09-29 Werner Lemberg <wl@gnu.org>
[truetype] Clean up `TT_Face' structure.
* include/freetype/internal/tttypes.h (TT_FaceRec): Remove unused
fields `horz_metrics' and `vert_metrics'.
Update documentation.
* src/sfnt/sfobjs.c (sfnt_done_face): Updated.
2016-09-28 Werner Lemberg <wl@gnu.org>
More FT_ZERO usage.
* src/gxvalid/gxvcommn.c (gxv_ClassTable_validate):
s/ft_memset/FT_MEM_ZERO/.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
s/ft_memset/FT_ARRAY_ZERO/.
* src/raster/ftraster.c (FT_ZERO): Define.
(ft_black_new): Use it.
* src/raster/ftrend1.c (ft_raster1_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
* src/smooth/ftgrays.c (FT_ZERO): Define.
(gray_raster_new): Use it.
* src/smooth/ftsmooth.c (ft_smooth_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
2016-09-28 Werner Lemberg <wl@gnu.org>
*/*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Trace number of executed opcodes.
* src/truetype/ttinterp.c (TT_RunIns): Implement it.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Speed up `TT_Load_Glyph'.
This avoids additional calls to `tt_face_lookup_table' for the
`glyf' table, which can be expensive.
* include/freetype/internal/tttypes.h (TT_LoaderRec): Move
`glyf_offset' field to ...
(TT_FaceRec): ... this structure.
* src/truetype/ttgload.c (load_truetype_glyph): Updated.
(tt_loader_init): Move initialization of `glyf_offset' to ...
* src/truetype/ttpload.c (tt_face_load_loca): ... this function.
2016-09-27 Werner Lemberg <wl@gnu.org>
[truetype] Introduce dynamic limits for some bytecode opcodes.
This speeds up FreeType's handling of malformed fonts.
* src/truetype/ttinterp.c (TT_RunIns): Set up limits for the number
of twilight points, the total number of negative jumps, and the
total number of loops in LOOPCALL opcodes. The values are based on
the number of points and entries in the CVT table.
(Ins_JMPR): Test negative jump counter.
(Ins_LOOPCALL): Test loopcall counter.
* src/truetype/ttinterp.h (TT_ExecContext): Updated.
* docs/CHANGES: Updated.
2016-09-25 Werner Lemberg <wl@gnu.org>
[truetype] Sanitize only last entry of `loca' table.
Without this patch, a loca sequence like `0 100000 0 100000 ...',
where value 100000 is larger than the `glyf' table size, makes
FreeType handle the whole `glyf' table as a single glyph again and
again, which is certainly invalid (and can be very slow, too).
* src/truetype/ttpload.c (tt_face_get_location): Implement.
Improve tracing messages.
2016-09-25 Werner Lemberg <wl@gnu.org>
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Fix typo.
2016-09-24 Werner Lemberg <wl@gnu.org>
[autofit] Tracing fixes.
* src/autofit/afmodule.c (af_autofitter_load_glyph): Call dumping
functions only if we actually do tracing.
2016-09-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Reduce divisions in the line renderer.
We don't need some divisions if a line segments stays within a single
row or a single column of pixels.
* src/smooth/ftgrays.c (gray_render_line) [FT_LONG64]: Make divisions
conditional.
2016-09-15 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_sweep): Remove check for empty table.
2016-09-14 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Another tiny speed-up.
* src/smooth/ftgrays.c (gray_find_cell): Merge into...
(gray_record_cell): ... this function.
2016-09-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code.
2016-09-11 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Fix valgrind warning and reoptimize.
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.
* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-10 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit.
Problems reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40
We now map the strike index right before accessing the physical
data, not earlier.
* src/sfnt/sfobjs.c (sfnt_load_face): Set `face->sbit_strike_map'
after creating the map so that...
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): ... this function
can be used before and after setting up `sbit_strike_map'.
(tt_face_set_sbit_strike): Revert change.
(tt_sbit_decoder_init, tt_face_load_sbix_image): Map strike index.
* src/truetype/ttdriver.c (tt_size_select): Revert change.
2016-09-09 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Minor improvements.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Ignore
invalid strikes.
Use better values for call to `FT_Set_Char_Size'.
2016-09-09 Werner Lemberg <wl@gnu.org>
[sfnt] Don't provide (completely) broken strike data.
FreeType tries to sanitize strike header data; we now reject
completely broken ones.
* include/freetype/internal/tttypes.h (TT_FaceRec): New
`sbit_strike_map' array pointer.
* src/base/ftobjs.c (FT_Match_Size): Reject matches where either
width or height would be zero.
Add tracing message in case of error.
* src/sfnt/sfobjs.c (sfnt_load_face): Populate `sbit_strike_map',
only using (more or less) valid strike header data for
FT_Face's `available_sizes' array.
(sfnt_done_face): Updated.
* src/sfnt/ttsbit.c (tt_face_set_sbit_strike): Use
`sbit_strike_map'.
(tt_face_load_strike_metrics): Improve tracing.
* src/truetype/ttdriver.c (tt_size_select): Use `sbit_strike_map'.
2016-09-08 Werner Lemberg <wl@gnu.org>
* Version 2.7 released.
=======================
Tag sources with `VER-2-7'.
* docs/VERSION.TXT: Add entry for version 2.7.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.6.5/2.7/, s/265/27/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 7.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 18:6:12.
* CMakeLists.txt (VERSION_MINOR): Set to 7.
(VERSION_PATCH): Set to 0.
* docs/CHANGES: Updated.
2016-09-08 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c: Include `ttgxvar.h'.
This fixes the `multi' build.
2016-09-08 Werner Lemberg <wl@gnu.org>
[autofit] Another improvement to Armenian support.
Suggested by Hrant H Papazian <hpapazian@gmail.com>.
* src/autofit/afscript.h: Use better suited characters to derive
default stem widths.
2016-09-07 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_hline): Micro-optimize.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Operate in absolute bitmap coordinates.
Simpler bitmap addressing improves performance by 1.5%.
* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
gray_sweep, gray_convert_glyph, gray_raster_render): Updated.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start (take 2).
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
(gray_convert_glyph): Make initial y-coordinate invalid.
2016-09-06 Werner Lemberg <wl@gnu.org>
[type1] MM fonts support exactly zero named instances (#48748).
* src/type1/t1load.c (T1_Get_MM_Var): Set `num_namedstyles' to zero.
2016-09-06 Jonathan Kew <jfkthame@gmail.com>
[cff] Fix uninitialized memory.
Problem reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1270288
* src/cff/cf2interp.c (cf2_interpT2CharString): Initialize `storage'
array to handle a `get' opcode without a previous `put'.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start.
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
2016-09-05 Werner Lemberg <wl@gnu.org>
[cff] Fix memory initialization.
* src/cff/cf2stack.c (cf2_stack_init): Use `FT_NEW'. The `Q'
variants of FreeType's memory allocation macros don't do zeroing.
2016-09-05 Werner Lemberg <wl@gnu.org>
[ftrandom] Minor improvements.
* src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): New macro, set to
500.
* src/tools/ftrandom/Makefile (CFLAGS): Split off include
directories to ...
(INCLUDES): ... this new variable.
(LDFLAGS): New variable.
(ftrandom.o, ftrandom): Updated.
2016-09-05 Werner Lemberg <wl@gnu.org>
[autofit] Improve Armenian support.
Thanks to Hrant H Papazian <hpapazian@gmail.com> for help.
* src/autofit/afblue.dat (AF_BLUE_STRING_ARMENIAN_*): Improve
selection of characters.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
2016-09-04 Werner Lemberg <wl@gnu.org>
[ftrandom] Improve Makefile.
It now supports both a normal build (`./configure && make') and a
development build (`make devel').
* src/tools/ftrandom/Makefile (VPATH): Set it so that
`libfreetype.a' gets searched in both `objs' (for the development
build) and `objs/.libs' (for a normal build which uses libtool).
(LIBS): Add missing libraries.
(ftrandom.o): New rule.
(ftrandom): Use automatic variables.
2016-09-03 Werner Lemberg <wl@gnu.org>
[truetype] More fixes for handling of GX deltas.
Problems reported by Bob Taylor <Bob.Taylor@monotype.com>.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix rough
sanity test for glyph variation array header size.
Always set stream position before reading packed x and y deltas.
Fix thinko w.r.t. `localpoints' array.
2016-09-03 Werner Lemberg <wl@gnu.org>
[ftrandom] Various fixes.
* src/tools/ftrandom/ftrandom.c (GOOD_FONTS_DIR): Provide better
default.
(error_fraction): Make it of type `double' to work as advertized –
this was completely broken.
Update all related code.
(error_count, fcnt): Make it unsigned to fix compiler warnings.
Update all related code.
(fontlist): Change `len' member to `long' to fix compiler warnings.
(FT_MoveTo, FT_LineTo, FT_ConicTo, FT_CubicTo, abort_test): Tag
unused variables.
(TestFace, FindFonts, copyfont, do_test): Fix compiler warnings.
(ExecuteTest): Ditto.
Call `FT_Done_FreeType'.
(getErrorCnt): Replace `ceil' with an ordinary cast to `unsigned
int'.
(usage): Improve output.
(main): Fix compiler warnings.
* src/tools/ftrandom/README: Updated.
2016-09-03 Werner Lemberg <wl@gnu.org>
[base] Avoid negative bitmap strike dimensions (#48985).
* src/base/ftobjs.c (FT_Open_Face): Check whether negation was
actually successful. For example, this can fail for value
-32768 if the type is `signed short'. If there are problems,
disable the strike.
2016-09-03 Werner Lemberg <wl@gnu.org>
[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).
* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[unix] Enable 64bit support in file system access (#48962).
* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[sfnt] Avoid left shift of negative value (#48980).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
constant.
2016-09-02 Werner Lemberg <wl@gnu.org>
* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.
2016-09-02 Werner Lemberg <wl@gnu.org>
Some preparations for the next release.
* include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.
* docs/CHANGES: Updated.
2016-09-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Simplify span rendering more.
It turns out that there is significant cost associated with `FT_Span'
creation and calls to `gray_render_span' because it happens so
frequently. This removes these steps from our internal use but leaves
it alone for `FT_RASTER_FLAG_DIRECT" to preserve API. The speed gain
is about 5%.
* src/smooth/ftgrays.c (gray_render_span): Removed. The code is
migrated to...
(gray_hline): ... here.
2016-08-30 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing a bit more.
Zero coverage is unlikely (1 out of 256) to warrant checking. This
gives 0.5% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
2016-08-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing.
This gives 2% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
pointer to its bottom-left and pitch to be used in...
(gray_TWorker): ... here.
(gray_render_span): Move pixmap flow check from here...
(gray_raster_render): .. to here.
2016-08-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Reduce stack of band boundaries.
* src/smooth/ftgrays.c (gray_TBand): Removed.
(gray_convert_glyph): Updated to stack band boundaries concisely.
2016-08-26 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.
2016-08-26 Werner Lemberg <wl@gnu.org>
[cid] Fix commit from 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.
2016-08-26 Werner Lemberg <wl@gnu.org>
[sfnt] Cache offset and size to bitmap data table.
This commit avoids `EBDT' and friends being looked up again and
again while loading a single embedded bitmap.
* include/freetype/internal/tttypes.h (TT_FaceRec)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: New fields `ebdt_start' and
`ebdt_size'.
* src/sfnt/ttsbit.c (tt_sbit_decoder_init): Move table lookup to ...
(tt_face_load_sbit): ... this function; also store the table size
and offset.
2016-08-26 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.
2016-08-26 Werner Lemberg <wl@gnu.org>
[type1] Fix heap buffer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36
* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
contain glyph names.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit (#48901).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Speed up handling of invalid format 4 cmaps.
* src/sfnt/ttcmap.c (tt_cmap4_next, tt_cmap4_char_map_binary): Add
tests for `num_glyph' from `tt_cmap4_char_map_linear'.
2016-08-25 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/ftdriver.h: Remove unused typedefs.
2016-08-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Simplify span rendering.
This removes unnecessary complexity of span merging and buffering.
Instead, the spans are rendered as they come, speeding up the
rendering by about 5% as a result.
* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
(gray_TWorker): Remove span buffer and related fields.
(gray_sweep, gray_hline): Updated.
* include/freetype/ftimage.h: Remove documentation note about
`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix `MPS' instruction.
According to Greg Hitchcock, MPS in DWrite really returns the point
size.
* src/truetype/ttobjs.h (TT_SizeRec): Add `point_size' member.
* src/truetype/ttdriver.c (tt_size_request): Set `point_size'.
* src/truetype/ttinterp.h (TT_ExecContextRec): Add `pointSize'
member.
* src/truetype/ttinterp.c (TT_Load_Context): Updated.
(Ins_MPS): Fix instruction.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Optimize last commit.
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
conditional clause.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid invalid left shift.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1295366
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid buffer overrun.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1273283
* src/lzw/ftzopen.c (ft_lzwstate_refill): Ensure `buf_size' doesn't
underflow.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix compiler warning.
* src/truetype/ttgload.c (load_truetype_glyph): Add cast.
2016-08-13 Werner Lemberg <wl@gnu.org>
[winfonts] Avoid zero bitmap width and height.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1272173
* src/winfonts/winfnt.c (FNT_Face_Init): Check zero pixel height.
(FNT_Load_Glyph): Check for zero pitch.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.
2016-08-10 Peter Klotz <Peter.Klotz@ith-icoserve.com>
* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.
2016-08-10 Werner Lemberg <wl@gnu.org>
[sfnt] Use correct type for `italicAngle' field (#48732).
* src/sfnt/ttload.c (tt_face_load_post): Fix types.
2016-08-06 Jon Spencer <jon@jonspencer.ca>
[sfnt] Fix `FT_Get_Advance' for bitmap strikes.
`FT_Get_Advance' returns 0 for bitmap fonts. It first gets the
advance value from the font table and then scales it by the
`font->size->metrics->x_scale' field. But `FT_Select_Size' doesn't
set that value for bitmap fonts and the advance gets scaled to zero.
Taken from
https://github.com/behdad/harfbuzz/issues/252
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
<TT_SBIT_TABLE_TYPE_EBLC>: Set scale values.
2016-08-06 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix GX variation handling of composites.
* src/truetype/ttgload.c (load_truetype_glyph)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check `ARGS_ARE_XY_VALUES' flag.
2016-08-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
2016-07-29 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Don't abort on invalid `maxComponentDepth'.
Since 2016-05-16 we detect infinite recursion directly.
* src/sfnt/ttload.c (tt_face_load_maxp): Don't adjust
`maxComponentDepth'.
* src/truetype/ttgload.c (load_truetype_glyph): Don't abort if
`maxComponentDepth' is not valid. Instead, simply adjust its value
and emit a tracing message.
2016-07-26 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.
No functional change.
2016-07-22 Hin-Tak Leung <htl10@users.sourceforge.net>
[truetype] Record the end of IDEFs.
To match the logic in FDEF. The value of the end is only used for
bound-checking in `Ins_JMPR', so it may not have been obvious that
it was not recorded. Tested (as part of Font Validator 2.0) all the
fonts on Fedora and did not see any change.
* src/truetype/ttinterp.c (Ins_IDEF): Updated.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix, second try.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests and use only one slot more.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
to fix nested loops.
2016-07-18 Werner Lemberg <wl@gnu.org>
[truetype] Make GETDATA work only for GX fonts.
* src/truetype/ttinterp.c (opcode_name): Updated.
(Ins_GETDATA): Only define for `TT_CONFIG_OPTION_GX_VAR_SUPPORT'.
(TT_RunIns): Updated.
2016-07-17 Werner Lemberg <wl@gnu.org>
[truetype] Add support for Apple's
GETDATA[], opcode 0x92
bytecode instruction. It always returns 17, and we have absolutely
no idea what it is good for...
* src/truetype/ttinterp.c (Pop_Push_Count, opcode_name): Updated.
(Ins_GETDATA): New function.
(TT_RunIns): Add it.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Add bytecode support for GX variation fonts.
This commit implements undocumented (but confirmed) stuff from
Apple's old bytecode engine.
GETVARIATION[], opcode 0x91
This opcode pushes normalized variation coordinates for all axes
onto the stack (in 2.14 format). Coordinate of first axis gets
pushed first.
GETINFO[], selector bit 3
If GX variation support is enabled, bit 10 of the result is set
to 1.
* src/truetype/ttinterp.c: Include FT_MULTIPLE_MASTERS_H.
(opcode_name) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
(Ins_GETINFO) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle selector
bit 3, checking support for variation glyph hinting.
(Ins_GETVARIATION) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New function
to implement opcode 0x91.
(TT_RunIns) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle opcode 0x91.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GETINFO bytecode instruction.
* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
stretching information.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] Make all glyphs in `Zycon' GX font work.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GX delta tracing.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
relative point movements.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] More fixes for GX.
This finally fixes the rendering of the cyclist and the lizard in
the `Zycon' font.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): `first' point
index is always cumulative.
(tt_handle_deltas): Rename to...
(tt_interpolate_deltas): ... This.
Add new parameter for output point array.
Update caller.
(TT_Vary_Apply_Glyph_Deltas): Add `points_out' array; it now holds
the intermediate results of `tt_interpolate_deltas' that are to be
added to `outline->points'.
2016-07-15 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Thinko.
`max_pos' is always larger than `min_pos' so `FT_ABS' is not needed.
Reported by Alexei.
2016-07-16 Nikolaus Waxweiler <madigens@gmail.com>
* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.
Problem reported by Hin-Tak Leung.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] Update and improve segment and edge tracing.
* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
`delta' also.
Don't show first point of segment as a replacement for `pos'; this
is (a) misleading, since the difference to `pos' can be almost
arbitrarily large in corner cases, and (b) it is better to have all
segment data in font units instead of a single value given in output
space coordinates.
Improve layout.
(af_glyph_hints_dump_edges): Show px->units and units->px conversion
values for convenience.
Improve layout.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] For edges, reject segments wider than 1px (#41334).
* src/autofit/afhints.h (AF_SegmentRec): New member `delta'.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Compute
`delta'.
(af_latin_hints_compute_edges): Reject segments with a delta larger
than 0.5px.
2016-07-14 Werner Lemberg <wl@gnu.org>
* include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro.
2016-07-14 Werner Lemberg <wl@gnu.org>
[sfnt] Fix `face_index' value in `FT_Face' for named instances.
* src/sfnt/sfobjs.c (sfnt_init_face): Don't strip off higher 16bits.
2016-07-14 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.
2016-07-14 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix gxvar delta interpolation.
The coordinates of the base font should be used for interpolation
purposes, NOT the current points (i.e., the result of accumulation
of previous deltas).
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Initialize
`points_org' before looping over all tuples.
----------------------------------------------------------------------------
Copyright 2016-2017 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.
Local Variables:
version-control: never
coding: utf-8
End:
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