--- /dev/null
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "mem.h"
+#include "gfxfilter.h"
+#include "devices/record.h"
+
+typedef struct _internal {
+ gfxfilter_t*filter;
+ gfxdevice_t*out;
+ gfxdevice_t*final_out;
+
+ /* for two pass filters: */
+ 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 = i->filter->finish(i->filter, i->out);
+ 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);
+}
+gfxresult_t* passthrough_finish(gfxdevice_t*dev)
+{
+ internal_t*i = (internal_t*)dev->internal;
+ gfxdevice_t*out = i->out;
+ free(dev->internal);dev->internal=0;free(dev);
+ return out->finish(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));
+
+ 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?filter_finish:passthrough_finish;
+ return dev;
+}
+
+static void setup_twopass(gfxdevice_t*, gfxfilter_t*filter, char passthrough);
+
+static gfxresult_t* twopass_finish(gfxdevice_t*dev)
+{
+ internal_t*i = (internal_t*)dev->internal;
+
+ assert(!strcmp(i->out->name, "record"));
+
+ 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) {
+ /* this output device was not a record device, so we don't have
+ to do anything here (like cleanup) */
+ return r;
+ }
+
+ /* switch to next pass filter */
+ i->filter = &i->twopass->pass2;
+
+ 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 {
+ // 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, i->out);
+ r = i->out->finish(i->out);
+
+ return r;
+}
+
+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));
+
+ gfxdevice_record_init(&i->record, /*use tempfile*/1);
+
+ i->out = &i->record;
+ i->final_out = out;
+ i->filter = &twopass->pass1;
+ i->twopass = twopass;
+ i->pass = 1;
+ i->num_passes = 2;
+
+ dev->setparameter = i->filter->setparameter?filter_setparameter:passthrough_setparameter;
+ dev->startpage = i->filter->startpage?filter_startpage:passthrough_startpage;
+ dev->startclip = i->filter->startclip?filter_startclip:passthrough_startclip;
+ dev->endclip = i->filter->endclip?filter_endclip:passthrough_endclip;
+ dev->stroke = i->filter->stroke?filter_stroke:passthrough_stroke;
+ dev->fill = i->filter->fill?filter_fill:passthrough_fill;
+ dev->fillbitmap = i->filter->fillbitmap?filter_fillbitmap:passthrough_fillbitmap;
+ dev->fillgradient = i->filter->fillgradient?filter_fillgradient:passthrough_fillgradient;
+ dev->addfont = i->filter->addfont?filter_addfont:passthrough_addfont;
+ dev->drawchar = i->filter->drawchar?filter_drawchar:passthrough_drawchar;
+ dev->drawlink = i->filter->drawlink?filter_drawlink:passthrough_drawlink;
+ dev->endpage = i->filter->endpage?filter_endpage:passthrough_endpage;
+ dev->finish = twopass_finish;
+
+ dev->internal = i;
+ dev->name = i->filter->name?i->filter->name:"filter";
+ dev->finish = twopass_finish;
+ return dev;
+}
+
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