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DEFINITIONS
This source file includes following definitions.
- filter_setparameter
- filter_startpage
- filter_startclip
- filter_endclip
- filter_stroke
- filter_fill
- filter_fillbitmap
- filter_fillgradient
- filter_addfont
- filter_drawchar
- filter_drawlink
- filter_endpage
- filter_finish
- passthrough_setparameter
- passthrough_startpage
- passthrough_startclip
- passthrough_endclip
- passthrough_stroke
- passthrough_fill
- passthrough_fillbitmap
- passthrough_fillgradient
- passthrough_addfont
- passthrough_drawchar
- passthrough_drawlink
- passthrough_endpage
- discard_setparameter
- discard_startpage
- discard_startclip
- discard_endclip
- discard_stroke
- discard_fill
- discard_fillbitmap
- discard_fillgradient
- discard_addfont
- discard_drawchar
- discard_drawlink
- discard_endpage
- discard_finish
- gfxfilter_apply
- setup_twopass
- twopass_finish
- gfxtwopassfilter_apply
- gfxfilterchain_parse
- gfxfilterchain_apply
- gfxfilterchain_destroy
/* gfxfilter.c
Part of the swftools package.
Copyright (c) 2010 Matthias Kramm <kramm@quiss.org>
This program 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; either version 2 of the License, or
(at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "mem.h"
#include "gfxfilter.h"
#include "devices/record.h"
#include "q.h"
typedef struct _internal {
gfxfilter_t*filter;
gfxdevice_t*out;
/* for two pass filters: */
gfxdevice_t*final_out;
int pass;
int num_passes;
gfxdevice_t record;
gfxtwopassfilter_t*twopass;
} internal_t;
static int filter_setparameter(gfxdevice_t*dev, const char*key, const char*value)
{
internal_t*i = (internal_t*)dev->internal;
return i->filter->setparameter(i->filter, key, value, i->out);
}
static void filter_startpage(gfxdevice_t*dev, int width, int height)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->startpage(i->filter, width, height, i->out);
}
static void filter_startclip(gfxdevice_t*dev, gfxline_t*line)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->startclip(i->filter, line, i->out);
}
static void filter_endclip(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->endclip(i->filter, i->out);
}
static void filter_stroke(gfxdevice_t*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->stroke(i->filter, line, width, color, cap_style, joint_style, miterLimit, i->out);
}
static void filter_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->fill(i->filter, line, color, i->out);
}
static void filter_fillbitmap(gfxdevice_t*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->fillbitmap(i->filter, line, img, matrix, cxform, i->out);
}
static void filter_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->fillgradient(i->filter, line, gradient, type, matrix, i->out);
}
static void filter_addfont(gfxdevice_t*dev, gfxfont_t*font)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->addfont(i->filter, font, i->out);
}
static void filter_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->drawchar(i->filter, font, glyphnr, color, matrix, i->out);
}
static void filter_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->drawlink(i->filter, line, action, i->out);
}
static void filter_endpage(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
i->filter->endpage(i->filter, i->out);
}
static gfxresult_t* filter_finish(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
gfxresult_t*r;
if(i->filter->finish) {
r = i->filter->finish(i->filter, i->out);
} else {
r = i->out->finish(i->out);
}
if(i->filter->internal) {
free(i->filter->internal);
i->filter->internal = 0;
}
free(i->filter);i->filter=0;
free(dev->internal);dev->internal=0;free(dev);
return r;
}
static int passthrough_setparameter(gfxdevice_t*dev, const char*key, const char*value)
{
internal_t*i = (internal_t*)dev->internal;
return i->out->setparameter(i->out, key, value);
}
static void passthrough_startpage(gfxdevice_t*dev, int width, int height)
{
internal_t*i = (internal_t*)dev->internal;
i->out->startpage(i->out, width, height);
}
static void passthrough_startclip(gfxdevice_t*dev, gfxline_t*line)
{
internal_t*i = (internal_t*)dev->internal;
i->out->startclip(i->out, line);
}
static void passthrough_endclip(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
i->out->endclip(i->out);
}
static void passthrough_stroke(gfxdevice_t*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
{
internal_t*i = (internal_t*)dev->internal;
i->out->stroke(i->out, line, width, color, cap_style, joint_style, miterLimit);
}
static void passthrough_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
{
internal_t*i = (internal_t*)dev->internal;
i->out->fill(i->out, line, color);
}
static void passthrough_fillbitmap(gfxdevice_t*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
{
internal_t*i = (internal_t*)dev->internal;
i->out->fillbitmap(i->out, line, img, matrix, cxform);
}
static void passthrough_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
{
internal_t*i = (internal_t*)dev->internal;
i->out->fillgradient(i->out, line, gradient, type, matrix);
}
static void passthrough_addfont(gfxdevice_t*dev, gfxfont_t*font)
{
internal_t*i = (internal_t*)dev->internal;
i->out->addfont(i->out, font);
}
static void passthrough_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
{
internal_t*i = (internal_t*)dev->internal;
i->out->drawchar(i->out, font, glyphnr, color, matrix);
}
static void passthrough_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
{
internal_t*i = (internal_t*)dev->internal;
i->out->drawlink(i->out, line, action);
}
static void passthrough_endpage(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
i->out->endpage(i->out);
}
int discard_setparameter(gfxdevice_t*dev, const char*key, const char*value)
{
return 0;
}
static void discard_startpage(gfxdevice_t*dev, int width, int height)
{
}
static void discard_startclip(gfxdevice_t*dev, gfxline_t*line)
{
}
static void discard_endclip(gfxdevice_t*dev)
{
}
static void discard_stroke(gfxdevice_t*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
{
}
static void discard_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
{
}
static void discard_fillbitmap(gfxdevice_t*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
{
}
static void discard_fillgradient(gfxdevice_t*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
{
}
static void discard_addfont(gfxdevice_t*dev, gfxfont_t*font)
{
}
static void discard_drawchar(gfxdevice_t*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
{
}
static void discard_drawlink(gfxdevice_t*dev, gfxline_t*line, const char*action)
{
}
static void discard_endpage(gfxdevice_t*dev)
{
}
static gfxresult_t* discard_finish(gfxdevice_t*dev)
{
return 0;
}
gfxdevice_t*gfxfilter_apply(gfxfilter_t*_filter, gfxdevice_t*out)
{
internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
gfxdevice_t*dev = (gfxdevice_t*)rfx_calloc(sizeof(gfxdevice_t));
gfxfilter_t*filter = (gfxfilter_t*)rfx_alloc(sizeof(gfxfilter_t));
memcpy(filter, _filter, sizeof(gfxfilter_t));
i->out = out;
i->filter = filter;
i->pass = 1;
dev->internal = i;
dev->name = filter->name?filter->name:"filter";
dev->setparameter = filter->setparameter?filter_setparameter:passthrough_setparameter;
dev->startpage = filter->startpage?filter_startpage:passthrough_startpage;
dev->startclip = filter->startclip?filter_startclip:passthrough_startclip;
dev->endclip = filter->endclip?filter_endclip:passthrough_endclip;
dev->stroke = filter->stroke?filter_stroke:passthrough_stroke;
dev->fill = filter->fill?filter_fill:passthrough_fill;
dev->fillbitmap = filter->fillbitmap?filter_fillbitmap:passthrough_fillbitmap;
dev->fillgradient = filter->fillgradient?filter_fillgradient:passthrough_fillgradient;
dev->addfont = filter->addfont?filter_addfont:passthrough_addfont;
dev->drawchar = filter->drawchar?filter_drawchar:passthrough_drawchar;
dev->drawlink = filter->drawlink?filter_drawlink:passthrough_drawlink;
dev->endpage = filter->endpage?filter_endpage:passthrough_endpage;
dev->finish = filter_finish;
return dev;
}
static void setup_twopass(gfxdevice_t*dev, gfxfilter_t*filter)
{
dev->name = filter->name?filter->name:"filter";
dev->setparameter = filter->setparameter?filter_setparameter:passthrough_setparameter;
dev->startpage = filter->startpage?filter_startpage:passthrough_startpage;
dev->startclip = filter->startclip?filter_startclip:passthrough_startclip;
dev->endclip = filter->endclip?filter_endclip:passthrough_endclip;
dev->stroke = filter->stroke?filter_stroke:passthrough_stroke;
dev->fill = filter->fill?filter_fill:passthrough_fill;
dev->fillbitmap = filter->fillbitmap?filter_fillbitmap:passthrough_fillbitmap;
dev->fillgradient = filter->fillgradient?filter_fillgradient:passthrough_fillgradient;
dev->addfont = filter->addfont?filter_addfont:passthrough_addfont;
dev->drawchar = filter->drawchar?filter_drawchar:passthrough_drawchar;
dev->drawlink = filter->drawlink?filter_drawlink:passthrough_drawlink;
dev->endpage = filter->endpage?filter_endpage:passthrough_endpage;
}
static gfxresult_t* twopass_finish(gfxdevice_t*dev)
{
internal_t*i = (internal_t*)dev->internal;
gfxresult_t*r;
if(i->filter->finish) {
r = i->filter->finish(i->filter, i->out);
} else {
r = i->out->finish(i->out);
}
if(i->pass == i->num_passes) {
free(i->twopass);
i->twopass = 0;
i->filter = 0;
free(i);
dev->internal=0;
free(dev);
return r;
}
/* switch to next pass filter */
i->filter = &i->twopass->pass2;
setup_twopass(dev, i->filter);
dev->finish = twopass_finish;
if(i->pass == i->num_passes-1) {
/* we don't record in the final pass- we just stream out to the
next output device */
i->out = i->final_out;
} else {
// switch to a new tempfile- this only happens for 3 passes or more
assert(i->num_passes>2);
gfxdevice_record_init(&i->record, /*use tempfile*/1);
i->out = &i->record;
}
i->pass++;
gfxresult_record_replay(r, dev, 0);
r->destroy(r);
return twopass_finish(dev);
}
gfxdevice_t*gfxtwopassfilter_apply(gfxtwopassfilter_t*_twopass, gfxdevice_t*out)
{
internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
gfxdevice_t*dev = (gfxdevice_t*)rfx_calloc(sizeof(gfxdevice_t));
gfxtwopassfilter_t*twopass = (gfxtwopassfilter_t*)rfx_alloc(sizeof(gfxtwopassfilter_t));
memcpy(twopass, _twopass, sizeof(gfxtwopassfilter_t));
gfxdevice_record_init(&i->record, /*use tempfile*/1);
i->out = &i->record;
i->final_out = out;
i->twopass = twopass;
i->pass = 1;
i->num_passes = 2;
dev->internal = i;
i->filter = &twopass->pass1;
setup_twopass(dev, i->filter);
dev->finish = twopass_finish;
return dev;
}
gfxfilterchain_t* gfxfilterchain_parse(const char*_filterexpr)
{
char*filterexpr = strdup(_filterexpr);
char*f = filterexpr;
char*end = filterexpr+strlen(filterexpr);
dict_t* params = dict_new2(&charptr_type);
char*cmd = 0;
gfxfilterchain_t*chain = 0;
gfxfilterchain_t*next = 0;
if(!*f)
return 0;
while(1) {
char* eq = strchr(f, '=');
char* colon = strchr(f, ':');
char lastitem = 0;
if(!colon) {
colon = end;
lastitem = 1;
}
*colon = 0;
char*newcmd = 0;
char param = 0;
/* fixme: change this from a dict_t to gfxparams_t? */
if(eq && eq < colon) { // parameter
*eq = 0;
if(!cmd) {
fprintf(stderr, "Error: need a filter before specifying parameters (%s=%s)\n", f, eq+1);
return 0;
}
dict_put(params, f, strdup(eq+1));
param = 1;
} else {
newcmd = f;
}
if(!param || lastitem) {
if(!cmd && lastitem)
cmd = newcmd;
assert(cmd);
gfxfilterbase_t*f = 0;
if(!strcmp(cmd, "maketransparent")) {
char*alphastr = dict_lookup(params, "alpha");
int alpha = 255;
if(alphastr) alpha=atoi(alphastr);
f = malloc(sizeof(gfxfilter_t));
gfxfilter_maketransparent_init((gfxfilter_t*)f, alpha);
} else if(!strcmp(cmd, "remove_font_transforms")) {
f = malloc(sizeof(gfxtwopassfilter_t));
gfxtwopassfilter_remove_font_transforms_init((gfxtwopassfilter_t*)f);
} else if(!strcmp(cmd, "vectors_to_glyphs")) {
f = malloc(sizeof(gfxtwopassfilter_t));
gfxtwopassfilter_vectors_to_glyphs_init((gfxtwopassfilter_t*)f);
} else if(!strcmp(cmd, "one_big_font")) {
f = malloc(sizeof(gfxtwopassfilter_t));
gfxtwopassfilter_one_big_font_init((gfxtwopassfilter_t*)f);
} else {
fprintf(stderr, "Unknown filter: %s\n", cmd);
return 0;
}
dict_clear(params);
gfxfilterchain_t*n = rfx_calloc(sizeof(gfxfilterchain_t));
if(!chain) {
chain = next = n;
} else {
next->next = n;
next = n;
}
n->filter = f;
cmd = newcmd;
if(lastitem) break;
}
f = colon+1;
}
dict_destroy(params);
return chain;
}
gfxdevice_t* gfxfilterchain_apply(gfxfilterchain_t*chain, gfxdevice_t*dev)
{
while(chain) {
if(chain->filter->type == gfxfilter_onepass) {
dev = gfxfilter_apply((gfxfilter_t*)chain->filter, dev);
} else if(chain->filter->type == gfxfilter_twopass) {
dev = gfxtwopassfilter_apply((gfxtwopassfilter_t*)chain->filter, dev);
} else {
fprintf(stderr, "Internal error in gfxfilterchain_apply- unknown filter type %d\n", chain->filter->type);
}
chain = chain->next;
}
return dev;
}
void gfxfilterchain_destroy(gfxfilterchain_t*chain)
{
while(chain) {
gfxfilterchain_t*next = chain->next;
free(chain);
chain = next;
}
}