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netsurf/atari/plot/plotter.h

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/*
* Copyright 2010 Ole Loots <ole@monochrom.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _GEM_PLOTTER_API_H_
#define _GEM_PLOTTER_API_H_
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>
#include <string.h>
#include <windom.h>
#include "desktop/plot_style.h"
#include "image/bitmap.h"
#include "atari/bitmap.h"
#include "atari/osspec.h"
#include "atari/gui.h"
#include "atari/font.h"
#include "atari/options.h"
#include "atari/findfile.h"
#include "utils/utf8.h"
#include "utils/log.h"
#ifndef ceilf
#define ceilf(x) (float)ceil((double)x)
#endif
#ifdef TEST_PLOTTER
#define verbose_log 1
#define LOG(x) do { if (verbose_log) (printf(__FILE__ " %s %i: ", __PRETTY_FUNCTION__, __LINE__), printf x, fputc('\n', stdout)); } while (0)
#endif
#define MAX_FRAMEBUFS 0x010
#define C2P (1<<0) /* C2P convert buffer 1 to buffer 2 */
/* TODO: implement offscreen buffer switch */
/* Plotter Flags: */
#define PLOT_FLAG_OFFSCREEN 0x01
#define PLOT_FLAG_LOCKED 0x02
#define PLOT_FLAG_DITHER 0x04
#define PLOT_FLAG_TRANS 0x08
/* Error codes: */
#define ERR_BUFFERSIZE_EXCEEDS_SCREEN 1
#define ERR_NO_MEM 2
#define ERR_PLOTTER_NOT_AVAILABLE 3
static const char * plot_error_codes[] =
{
"None",
"ERR_BUFFERSIZE_EXCEEDS_SCREEN",
"ERR_NO_MEM",
"ERR_PLOTTER_NOT_AVAILABLE"
};
/* Grapics & Font Plotter Objects: */
typedef struct s_font_plotter * FONT_PLOTTER;
typedef struct s_gem_plotter * GEM_PLOTTER;
typedef struct s_font_plotter * GEM_FONT_PLOTTER; /* for public use ... */
/* declaration of font plotter member functions: (_fpmf_ prefix) */
typedef int (*_fpmf_str_width)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
const char * str, size_t length, int * width);
typedef int (*_fpmf_str_split)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x);
typedef int (*_fpmf_pixel_pos)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x);
typedef int (*_fpmf_text)( FONT_PLOTTER self, int x, int y, const char *text,
size_t length, const plot_font_style_t *fstyle);
typedef int (*_fpmf_dtor)( FONT_PLOTTER self );
struct s_font_plotter
{
char * name;
int flags;
int vdi_handle;
void * priv_data;
GEM_PLOTTER plotter;
_fpmf_str_width str_width;
_fpmf_str_split str_split;
_fpmf_pixel_pos pixel_pos;
_fpmf_text text;
_fpmf_dtor dtor;
};
struct s_clipping {
short x0;
short y0;
short x1;
short y1;
};
struct s_vdi_sysinfo {
short vdi_handle; /* vdi handle */
short scr_w; /* resolution horz. */
short scr_h; /* resolution vert. */
short scr_bpp; /* bits per pixel */
int colors; /* 0=hiclor, 2=mono */
unsigned long hicolors; /* if colors = 0 */
short pixelsize; /* bytes per pixel */
unsigned short pitch; /* row pitch */
unsigned short vdiformat; /* pixel format */
unsigned short clut; /* type of clut support */
void * screen; /* pointer to screen, or NULL */
unsigned long screensize; /* size of screen (in bytes) */
unsigned long mask_r; /* color masks */
unsigned long mask_g;
unsigned long mask_b;
unsigned long mask_a;
short maxintin; /* maximum pxy items */
short maxpolycoords; /* max coords for p_line etc. */
unsigned long EdDiVersion; /* EdDi Version or 0 */
bool rasterscale; /* raster scaling support */
};
struct s_frame_buf
{
short x;
short y;
short w;
short h;
short vis_x; /* visible rectangle of the screen buffer */
short vis_y; /* coords are relative to framebuffer location */
short vis_w;
short vis_h;
int size;
bool swapped;
void * mem;
};
/* declaration of plotter member functions ( _pmf_ prefix )*/
typedef int (*_pmf_resize)(GEM_PLOTTER self, int w, int h);
typedef int (*_pmf_move)(GEM_PLOTTER self, short x, short y );
typedef void * (*_pmf_lock)(GEM_PLOTTER self);
typedef void * (*_pmf_create_framebuffer)(GEM_PLOTTER self);
typedef void * (*_pmf_switch_to_framebuffer)(GEM_PLOTTER self);
typedef int (*_pmf_unlock)(GEM_PLOTTER self);
typedef int (*_pmf_update_region)(GEM_PLOTTER self, GRECT region);
typedef int (*_pmf_update_screen_region)( GEM_PLOTTER self, GRECT region );
typedef int (*_pmf_update_screen)(GEM_PLOTTER self);
typedef int (*_pmf_put_pixel)(GEM_PLOTTER self, int x, int y, int color );
typedef int (*_pmf_copy_rect)(GEM_PLOTTER self, GRECT src, GRECT dst );
typedef int (*_pmf_clip)(GEM_PLOTTER self, int x0, int y0, int x1, int y1);
typedef int (*_pmf_arc)(GEM_PLOTTER self, int x, int y, int radius, int angle1, int angle2, const plot_style_t * pstyle);
typedef int (*_pmf_disc)(GEM_PLOTTER self, int x, int y, int radius, const plot_style_t * pstyle);
typedef int (*_pmf_line)(GEM_PLOTTER self, int x0, int y0, int x1, int y1, const plot_style_t * pstyle);
typedef int (*_pmf_rectangle)(GEM_PLOTTER self, int x0, int y0, int x1, int y1, const plot_style_t * pstyle);
typedef int (*_pmf_polygon)(GEM_PLOTTER self, const int *p, unsigned int n, const plot_style_t * pstyle);
typedef int (*_pmf_path)(GEM_PLOTTER self, const float *p, unsigned int n, int fill, float width, int c, const float transform[6]);
typedef int (*_pmf_bitmap_resize) ( GEM_PLOTTER self, struct bitmap * bm, int nw, int nh );
typedef int (*_pmf_bitmap)(GEM_PLOTTER self, struct bitmap * bmp, int x, int y,
unsigned long bg, unsigned long flags );
typedef int (*_pmf_text)(GEM_PLOTTER self, int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle);
typedef int (*_pmf_dtor)(GEM_PLOTTER self);
struct s_gem_plotter
{
char * name; /* name that identifies the Plotter */
unsigned long flags;
int vdi_handle;
struct s_vdi_sysinfo * scr;
void * priv_data;
int bpp_virt; /* bit depth of framebuffer */
struct s_clipping clipping;
struct s_frame_buf fbuf[MAX_FRAMEBUFS];
int cfbi; /* current framebuffer index */
FONT_PLOTTER font_plotter;
_pmf_resize resize;
_pmf_move move;
_pmf_lock lock;
_pmf_unlock unlock;
_pmf_create_framebuffer create_framebuffer;
_pmf_switch_to_framebuffer switch_to_framebuffer;
_pmf_update_region update_region;
_pmf_update_screen update_screen;
_pmf_update_screen_region update_screen_region;
_pmf_put_pixel put_pixel;
_pmf_copy_rect copy_rect;
_pmf_clip clip;
_pmf_arc arc;
_pmf_disc disc;
_pmf_line line;
_pmf_rectangle rectangle;
_pmf_polygon polygon;
_pmf_path path;
_pmf_bitmap_resize bitmap_resize;
_pmf_bitmap bitmap;
_pmf_text text;
_pmf_dtor dtor;
/*
int (*move)(GEM_PLOTTER self, short x, short y );
void * (*lock)(GEM_PLOTTER self);
void * (*create_framebuffer)(GEM_PLOTTER self);
void * (*switch_to_framebuffer)(GEM_PLOTTER self);
int (*unlock)(GEM_PLOTTER self);
int (*update_region)(GEM_PLOTTER self, GRECT region);
int (*update_screen_region)( GEM_PLOTTER self, GRECT region );
int (*update_screen)(GEM_PLOTTER self);
int (*put_pixel)(GEM_PLOTTER self, int x, int y, int color );
int (*copy_rect)(GEM_PLOTTER self, GRECT src, GRECT dst );
int (*clip)(GEM_PLOTTER self, int x0, int y0, int x1, int y1);
int (*arc)(GEM_PLOTTER self, int x, int y, int radius, int angle1, int angle2, const plot_style_t * pstyle);
int (*disc)(GEM_PLOTTER self, int x, int y, int radius, const plot_style_t * pstyle);
int (*line)(GEM_PLOTTER self, int x0, int y0, int x1, int y1, const plot_style_t * pstyle);
int (*rectangle)(GEM_PLOTTER self, int x0, int y0, int x1, int y1, const plot_style_t * pstyle);
int (*polygon)(GEM_PLOTTER self, const int *p, unsigned int n, const plot_style_t * pstyle);
int (*path)(GEM_PLOTTER self, const float *p, unsigned int n, int fill, float width, int c, const float transform[6]);
int (*bitmap_resize) ( GEM_PLOTTER self, struct bitmap * bm, int nw, int nh );
int (*bitmap)(GEM_PLOTTER self, struct bitmap * bmp, int x, int y,
unsigned long bg, unsigned long flags );
int (*text)(GEM_PLOTTER self, int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle);
int (*dtor)(GEM_PLOTTER self);
*/
};
struct s_driver_table_entry
{
char * name;
int (*ctor)( GEM_PLOTTER self );
int flags;
int max_bpp;
};
struct s_font_driver_table_entry
{
char * name;
int (*ctor)( FONT_PLOTTER self );
int flags;
};
typedef struct s_driver_table_entry * PLOTTER_INFO;
typedef struct s_font_driver_table_entry * FONT_PLOTTER_INFO;
/* get index to driver in driver list by name */
static int drvrname_idx( char * name );
/* get s_driver_table_entry from driver table */
struct s_driver_table_entry * get_screen_driver_entry(char * name);
/* get s_font_driver_table_entry from driver table */
struct s_font_driver_table_entry * get_font_driver_entry(char * name);
/* fill screen / sys info */
struct s_vdi_sysinfo * read_vdi_sysinfo(short vdih, struct s_vdi_sysinfo * info );
/*
Create an new plotter object
Error Values:
-1 no mem
-2 error configuring plotter
-3 Plotter not available
*/
GEM_PLOTTER new_plotter(int vdihandle, char * name,
GRECT *, int virt_bpp, unsigned long flags, FONT_PLOTTER font_renderer,
int * error);
/*
Create an new font plotter object
Error Values:
-1 no mem
-2 error configuring font plotter
-3 Font Plotter not available
*/
FONT_PLOTTER new_font_plotter(int vdihandle, char * name, unsigned long flags, int * error );
/* free the plotter resources */
int delete_plotter( GEM_PLOTTER p );
int delete_font_plotter( FONT_PLOTTER p );
/* calculate size of intermediate buffer */
int calc_chunked_buffer_size(int x, int y, int stride, int bpp);
/* calculates the pixel offset from x,y pos */
int get_pixel_offset( int x, int y, int stride, int bpp );
/* Recalculate visible parts of the framebuffer */
void update_visible_rect( GEM_PLOTTER p );
/* resolve possible visible parts of the framebuffer in screen coords */
bool fbrect_to_screen( GEM_PLOTTER self, GRECT box, GRECT * ret );
/* translate an error number */
const char* plotter_err_str(int i) ;
void dump_font_drivers(void);
void dump_plot_drivers(void);
void dump_vdi_info(short);
/* convert an rgb color to vdi1000 color */
void rgb_to_vdi1000( unsigned char * in, unsigned short * out );
/* convert an rgb color to an index into the web palette */
short rgb_to_666_index(unsigned char r, unsigned char g, unsigned char b);
/* shared / static methods ... */
int plotter_get_clip( GEM_PLOTTER self, struct s_clipping * out );
int plotter_std_clip(GEM_PLOTTER self,int x0, int y0, int x1, int y1);
void plotter_vdi_clip( GEM_PLOTTER self, bool set);
#define PLOTTER_IS_LOCKED(plotter) ( plotter->private_flags & PLOTTER_FLAG_LOCKED )
#define FILL_PLOTTER_VTAB( p ) \
p->dtor = dtor;\
p->resize= resize;\
p->move = move;\
p->lock = lock;\
p->unlock = unlock;\
p->update_region = update_region;\
p->update_screen_region = update_screen_region;\
p->update_screen = update_screen;\
p->put_pixel = put_pixel;\
p->copy_rect = copy_rect; \
p->clip = clip;\
p->arc = arc;\
p->disc = disc;\
p->line = line;\
p->rectangle = rectangle;\
p->polygon = polygon;\
p->path = path;\
p->bitmap = bitmap;\
p->text = text;\
#define FILL_FONT_PLOTTER_VTAB( p ) \
p->dtor = dtor;\
p->str_width = str_width;\
p->str_split = str_split;\
p->pixel_position = pixel_position;\
p->text = text;\
#define CURFB( p ) \
p->fbuf[p->cfbi]
#define FIRSTFB( p ) \
p->fbuf[0]
#define OFFSET_WEB_PAL 16
#define OFFSET_FONT_PAL 232
#define RGB_TO_VDI(c) rgb_to_666_index( (c&0xFF),(c&0xFF00)>>8,(c&0xFF0000)>>16)+OFFSET_WEB_PAL
#define ABGR_TO_RGB(c) ( ((c&0xFF)<<16) | (c&0xFF00) | ((c&0xFF0000)>>16) ) << 8
#endif
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