lib/devices/record.c

   1 /* gfxdevice_record.cc
   2
   3    Part of the swftools package.
   4
   5    Copyright (c) 2005 Matthias Kramm <kramm@quiss.org>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <math.h>
  24 #include "../../config.h"
  25 #ifdef HAVE_UNISTD_H
  26 #include <unistd.h>
  27 #endif
  28 #include <memory.h>
  29 #ifdef HAVE_IO_H
  30 #include <io.h>
  31 #endif
  32 #include <string.h>
  33 #include "../gfxdevice.h"
  34 #include "../gfxtools.h"
  35 #include "../types.h"
  36 #include "../bitio.h"
  37 #include "../log.h"
  38 #include "record.h"
  39
  40 typedef struct _internal {
  41     gfxfontlist_t* fontlist;
  42     writer_t w;
  43     int cliplevel;
  44 } internal_t;
  45
  46 typedef struct _internal_result {
  47     void*data;
  48     int length;
  49 } internal_result_t;
  50
  51 #define OP_END 0x00
  52 #define OP_SETPARAM 0x01
  53 #define OP_STROKE 0x02
  54 #define OP_STARTCLIP 0x03
  55 #define OP_ENDCLIP 0x04
  56 #define OP_FILL 0x05
  57 #define OP_FILLBITMAP 0x06
  58 #define OP_FILLGRADIENT 0x07
  59 #define OP_ADDFONT 0x08
  60 #define OP_DRAWCHAR 0x09
  61 #define OP_DRAWLINK 0x0a
  62 #define OP_STARTPAGE 0x0b
  63 #define OP_ENDPAGE 0x0c
  64 #define OP_FINISH 0x0d
  65
  66 #define OP_MOVETO 0x0e
  67 #define OP_LINETO 0x0f
  68 #define OP_SPLINETO 0x10
  69
  70 static int record_setparameter(struct _gfxdevice*dev, const char*key, const char*value)
  71 {
  72     internal_t*i = (internal_t*)dev->internal;
  73     msg("<trace> record: %08x SETPARAM %s %s\n", dev, key, value);
  74     writer_writeU8(&i->w, OP_SETPARAM);
  75     writer_writeString(&i->w, key);
  76     writer_writeString(&i->w, value);
  77     return 1;
  78 }
  79
  80 static void dumpLine(writer_t*w, gfxline_t*line)
  81 {
  82     while(line) {
  83         if(line->type == gfx_moveTo) {
  84             writer_writeU8(w, OP_MOVETO);
  85             writer_writeDouble(w, line->x);
  86             writer_writeDouble(w, line->y);
  87         } else if(line->type == gfx_lineTo) {
  88             writer_writeU8(w, OP_LINETO);
  89             writer_writeDouble(w, line->x);
  90             writer_writeDouble(w, line->y);
  91         } else if(line->type == gfx_splineTo) {
  92             writer_writeU8(w, OP_SPLINETO);
  93             writer_writeDouble(w, line->x);
  94             writer_writeDouble(w, line->y);
  95             writer_writeDouble(w, line->sx);
  96             writer_writeDouble(w, line->sy);
  97         }
  98         line = line->next;
  99     }
 100     writer_writeU8(w, OP_END);
 101 }
 102 static gfxline_t* readLine(reader_t*r)
 103 {
 104     gfxline_t*start = 0, *pos = 0;
 105     while(1) {
 106         unsigned char op = reader_readU8(r);
 107         if(op == OP_END)
 108             break;
 109         gfxline_t*line = (gfxline_t*)rfx_calloc(sizeof(gfxline_t));
 110         if(!start) {
 111             start = pos = line;
 112         } else {
 113             pos->next = line;
 114             pos = line;
 115         }
 116         if(op == OP_MOVETO) {
 117             line->type = gfx_moveTo;
 118             line->x = reader_readDouble(r);
 119             line->y = reader_readDouble(r);
 120         } else if(op == OP_LINETO) {
 121             line->type = gfx_lineTo;
 122             line->x = reader_readDouble(r);
 123             line->y = reader_readDouble(r);
 124         } else if(op == OP_SPLINETO) {
 125             line->type = gfx_splineTo;
 126             line->x = reader_readDouble(r);
 127             line->y = reader_readDouble(r);
 128             line->sx = reader_readDouble(r);
 129             line->sy = reader_readDouble(r);
 130         }
 131     }
 132     return start;
 133 }
 134 static gfximage_t readImage(reader_t*r)
 135 {
 136     gfximage_t img;
 137     img.width = reader_readU16(r);
 138     img.height = reader_readU16(r);
 139     img.data = (gfxcolor_t*)rfx_alloc(img.width*img.height*4);
 140     r->read(r, img.data, img.width*img.height*4);
 141     return img;
 142 }
 143 static gfxmatrix_t readMatrix(reader_t*r)
 144 {
 145     gfxmatrix_t matrix;
 146     matrix.m00 = reader_readDouble(r);
 147     matrix.m01 = reader_readDouble(r);
 148     matrix.m10 = reader_readDouble(r);
 149     matrix.m11 = reader_readDouble(r);
 150     matrix.tx = reader_readDouble(r);
 151     matrix.ty = reader_readDouble(r);
 152     return matrix;
 153 }
 154 static gfxcolor_t readColor(reader_t*r)
 155 {
 156     gfxcolor_t col;
 157     col.r = reader_readU8(r);
 158     col.g = reader_readU8(r);
 159     col.b = reader_readU8(r);
 160     col.a = reader_readU8(r);
 161     return col;
 162 }
 163 static gfxgradient_t* readGradient(reader_t*r)
 164 {
 165     gfxgradient_t*start = 0, *pos = 0;
 166     while(1) {
 167         U8 op = reader_readU8(r);
 168         if(!op)
 169             break;
 170         gfxgradient_t*g = (gfxgradient_t*)rfx_calloc(sizeof(gfxgradient_t));
 171         if(!start) {
 172             start = pos = g;
 173         } else {
 174             pos->next = g;
 175             pos = g;
 176         }
 177         g->color = readColor(r);
 178         g->pos = reader_readFloat(r);
 179     }
 180     return start;
 181 }
 182 static gfxcxform_t* readCXForm(reader_t*r)
 183 {
 184     U8 type = reader_readU8(r);
 185     if(!type)
 186         return 0;
 187     gfxcxform_t* c = (gfxcxform_t*)rfx_calloc(sizeof(gfxcxform_t));
 188     c->rr = reader_readFloat(r); c->rg = reader_readFloat(r); c->rb = reader_readFloat(r); c->ra = reader_readFloat(r);
 189     c->gr = reader_readFloat(r); c->gg = reader_readFloat(r); c->gb = reader_readFloat(r); c->ga = reader_readFloat(r);
 190     c->br = reader_readFloat(r); c->bg = reader_readFloat(r); c->bb = reader_readFloat(r); c->ba = reader_readFloat(r);
 191     c->ar = reader_readFloat(r); c->ag = reader_readFloat(r); c->ab = reader_readFloat(r); c->aa = reader_readFloat(r);
 192     return c;
 193 }
 194
 195 static void dumpColor(writer_t*w, gfxcolor_t*color)
 196 {
 197     writer_writeU8(w, color->r);
 198     writer_writeU8(w, color->g);
 199     writer_writeU8(w, color->b);
 200     writer_writeU8(w, color->a);
 201 }
 202 static void dumpMatrix(writer_t*w, gfxmatrix_t*matrix)
 203 {
 204     writer_writeDouble(w, matrix->m00);
 205     writer_writeDouble(w, matrix->m01);
 206     writer_writeDouble(w, matrix->m10);
 207     writer_writeDouble(w, matrix->m11);
 208     writer_writeDouble(w, matrix->tx);
 209     writer_writeDouble(w, matrix->ty);
 210 }
 211 static void dumpGradient(writer_t*w, gfxgradient_t*gradient)
 212 {
 213     while(gradient) {
 214         writer_writeU8(w, 1);
 215         dumpColor(w, &gradient->color);
 216         writer_writeFloat(w, gradient->pos);
 217         gradient = gradient->next;
 218     }
 219     writer_writeU8(w, 0);
 220 }
 221 static void dumpImage(writer_t*w, gfximage_t*image)
 222 {
 223     writer_writeU16(w, image->width);
 224     writer_writeU16(w, image->height);
 225     w->write(w, image->data, image->width*image->height*4);
 226 }
 227 static void dumpCXForm(writer_t*w, gfxcxform_t*c)
 228 {
 229     if(!c) {
 230         writer_writeU8(w, 0);
 231     } else {
 232         writer_writeU8(w, 1);
 233         writer_writeFloat(w, c->rr); writer_writeFloat(w, c->rg); writer_writeFloat(w, c->rb); writer_writeFloat(w, c->ra);
 234         writer_writeFloat(w, c->gr); writer_writeFloat(w, c->gg); writer_writeFloat(w, c->gb); writer_writeFloat(w, c->ga);
 235         writer_writeFloat(w, c->br); writer_writeFloat(w, c->bg); writer_writeFloat(w, c->bb); writer_writeFloat(w, c->ba);
 236         writer_writeFloat(w, c->ar); writer_writeFloat(w, c->ag); writer_writeFloat(w, c->ab); writer_writeFloat(w, c->aa);
 237     }
 238 }
 239 static void dumpFont(writer_t*w, gfxfont_t*font)
 240 {
 241     writer_writeString(w, font->id);
 242     writer_writeU32(w, font->num_glyphs);
 243     writer_writeU32(w, font->max_unicode);
 244     writer_writeDouble(w, font->ascent);
 245     writer_writeDouble(w, font->descent);
 246     int t;
 247     for(t=0;t<font->num_glyphs;t++) {
 248         dumpLine(w, font->glyphs[t].line);
 249         writer_writeDouble(w, font->glyphs[t].advance);
 250         writer_writeU32(w, font->glyphs[t].unicode);
 251         if(font->glyphs[t].name) {
 252             writer_writeString(w,font->glyphs[t].name);
 253         } else {
 254             writer_writeU8(w,0);
 255         }
 256     }
 257     for(t=0;t<font->max_unicode;t++) {
 258         writer_writeU32(w, font->unicode2glyph[t]);
 259     }
 260 }
 261 static gfxfont_t*readFont(reader_t*r)
 262 {
 263     gfxfont_t* font = (gfxfont_t*)rfx_calloc(sizeof(gfxfont_t));
 264     font->id = reader_readString(r);
 265     font->num_glyphs = reader_readU32(r);
 266     font->max_unicode = reader_readU32(r);
 267     font->ascent = reader_readDouble(r);
 268     font->descent = reader_readDouble(r);
 269     font->glyphs = (gfxglyph_t*)rfx_calloc(sizeof(gfxglyph_t)*font->num_glyphs);
 270     font->unicode2glyph = (int*)rfx_calloc(sizeof(font->unicode2glyph[0])*font->max_unicode);
 271     int t;
 272     for(t=0;t<font->num_glyphs;t++) {
 273         font->glyphs[t].line = readLine(r);
 274         font->glyphs[t].advance = reader_readDouble(r);
 275         font->glyphs[t].unicode = reader_readU32(r);
 276         font->glyphs[t].name = reader_readString(r);
 277         if(!font->glyphs[t].name[0]) {
 278             free((void*)(font->glyphs[t].name));
 279             font->glyphs[t].name = 0;
 280         }
 281     }
 282     for(t=0;t<font->max_unicode;t++) {
 283         font->unicode2glyph[t] = reader_readU32(r);
 284     }
 285     return font;
 286 }
 287
 288 static void record_stroke(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
 289 {
 290     internal_t*i = (internal_t*)dev->internal;
 291     msg("<trace> record: %08x STROKE\n", dev);
 292     writer_writeU8(&i->w, OP_STROKE);
 293     writer_writeDouble(&i->w, width);
 294     writer_writeDouble(&i->w, miterLimit);
 295     dumpColor(&i->w, color);
 296     writer_writeU8(&i->w, cap_style);
 297     writer_writeU8(&i->w, joint_style);
 298     dumpLine(&i->w, line);
 299 }
 300
 301 static void record_startclip(struct _gfxdevice*dev, gfxline_t*line)
 302 {
 303     internal_t*i = (internal_t*)dev->internal;
 304     msg("<trace> record: %08x STARTCLIP\n", dev);
 305     writer_writeU8(&i->w, OP_STARTCLIP);
 306     dumpLine(&i->w, line);
 307     i->cliplevel++;
 308 }
 309
 310 static void record_endclip(struct _gfxdevice*dev)
 311 {
 312     internal_t*i = (internal_t*)dev->internal;
 313     msg("<trace> record: %08x ENDCLIP\n", dev);
 314     writer_writeU8(&i->w, OP_ENDCLIP);
 315     i->cliplevel--;
 316     if(i->cliplevel<0) {
 317         msg("<error> record: endclip() without startclip()");
 318     }
 319 }
 320
 321 static void record_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
 322 {
 323     internal_t*i = (internal_t*)dev->internal;
 324     msg("<trace> record: %08x FILL\n", dev);
 325     writer_writeU8(&i->w, OP_FILL);
 326     dumpColor(&i->w, color);
 327     dumpLine(&i->w, line);
 328 }
 329
 330 static void record_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
 331 {
 332     internal_t*i = (internal_t*)dev->internal;
 333     msg("<trace> record: %08x FILLBITMAP\n", dev);
 334     writer_writeU8(&i->w, OP_FILLBITMAP);
 335     dumpImage(&i->w, img);
 336     dumpMatrix(&i->w, matrix);
 337     dumpLine(&i->w, line);
 338     dumpCXForm(&i->w, cxform);
 339 }
 340
 341 static void record_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
 342 {
 343     internal_t*i = (internal_t*)dev->internal;
 344     msg("<trace> record: %08x FILLGRADIENT %08x\n", dev, gradient);
 345     writer_writeU8(&i->w, OP_FILLGRADIENT);
 346     writer_writeU8(&i->w, type);
 347     dumpGradient(&i->w, gradient);
 348     dumpMatrix(&i->w, matrix);
 349     dumpLine(&i->w, line);
 350 }
 351
 352 static void record_addfont(struct _gfxdevice*dev, gfxfont_t*font)
 353 {
 354     internal_t*i = (internal_t*)dev->internal;
 355     msg("<trace> record: %08x ADDFONT %s\n", dev, font->id);
 356     if(font && !gfxfontlist_hasfont(i->fontlist, font)) {
 357         writer_writeU8(&i->w, OP_ADDFONT);
 358         dumpFont(&i->w, font);
 359         i->fontlist = gfxfontlist_addfont(i->fontlist, font);
 360     }
 361 }
 362
 363 static void record_drawchar(struct _gfxdevice*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
 364 {
 365     internal_t*i = (internal_t*)dev->internal;
 366     if(font && !gfxfontlist_hasfont(i->fontlist, font)) {
 367         record_addfont(dev, font);
 368     }
 369
 370     msg("<trace> record: %08x DRAWCHAR %d\n", glyphnr, dev);
 371     writer_writeU8(&i->w, OP_DRAWCHAR);
 372     if(font)
 373         writer_writeString(&i->w, font->id);
 374     else
 375         writer_writeString(&i->w, "*NULL*");
 376     writer_writeU32(&i->w, glyphnr);
 377     dumpColor(&i->w, color);
 378     dumpMatrix(&i->w, matrix);
 379 }
 380
 381 static void record_startpage(struct _gfxdevice*dev, int width, int height)
 382 {
 383     internal_t*i = (internal_t*)dev->internal;
 384     msg("<trace> record: %08x STARTPAGE\n", dev);
 385     writer_writeU8(&i->w, OP_STARTPAGE);
 386     writer_writeU16(&i->w, width);
 387     writer_writeU16(&i->w, height);
 388 }
 389
 390 static void record_endpage(struct _gfxdevice*dev)
 391 {
 392     internal_t*i = (internal_t*)dev->internal;
 393     msg("<trace> record: %08x ENDPAGE\n", dev);
 394     writer_writeU8(&i->w, OP_ENDPAGE);
 395 }
 396
 397 static void record_drawlink(struct _gfxdevice*dev, gfxline_t*line, const char*action)
 398 {
 399     internal_t*i = (internal_t*)dev->internal;
 400     msg("<trace> record: %08x DRAWLINK\n", dev);
 401     writer_writeU8(&i->w, OP_DRAWLINK);
 402     dumpLine(&i->w, line);
 403     writer_writeString(&i->w, action);
 404 }
 405
 406 static void replay(struct _gfxdevice*dev, gfxdevice_t*out, void*data, int length)
 407 {
 408     internal_t*i = 0;
 409     if(dev) {
 410         i = (internal_t*)dev->internal;
 411     }
 412
 413     reader_t r2;
 414     reader_t*r = &r2;
 415     reader_init_memreader(r, data, length);
 416     gfxfontlist_t* fontlist = gfxfontlist_create();
 417
 418     while(r->pos < length) {
 419         unsigned char op = reader_readU8(r);
 420         switch(op) {
 421             case OP_END:
 422                 goto finish;
 423             case OP_SETPARAM: {
 424                 msg("<trace> replay: SETPARAM");
 425                 char*key;
 426                 char*value;
 427                 key = reader_readString(r);
 428                 value = reader_readString(r);
 429                 out->setparameter(out, key, value);
 430                 free(key);
 431                 free(value);
 432                 break;
 433             }
 434             case OP_STARTPAGE: {
 435                 msg("<trace> replay: STARTPAGE");
 436                 U16 width = reader_readU16(r);
 437                 U16 height = reader_readU16(r);
 438                 out->startpage(out, width, height);
 439                 break;
 440             }
 441             case OP_ENDPAGE: {
 442                 msg("<trace> replay: ENDPAGE");
 443                 break;
 444             }
 445             case OP_FINISH: {
 446                 msg("<trace> replay: FINISH");
 447                 break;
 448             }
 449             case OP_STROKE: {
 450                 msg("<trace> replay: STROKE");
 451                 double width = reader_readDouble(r);
 452                 double miterlimit = reader_readDouble(r);
 453                 gfxcolor_t color = readColor(r);
 454                 gfx_capType captype;
 455                 int v = reader_readU8(r);
 456                 switch (v) {
 457                     case 0: captype = gfx_capButt; break;
 458                     case 1: captype = gfx_capRound; break;
 459                     case 2: captype = gfx_capSquare; break;
 460                 }
 461                 gfx_joinType jointtype;
 462                 v = reader_readU8(r);
 463                 switch (v) {
 464                     case 0: jointtype = gfx_joinMiter; break;
 465                     case 1: jointtype = gfx_joinRound; break;
 466                     case 2: jointtype = gfx_joinBevel; break;
 467                 }
 468                 gfxline_t* line = readLine(r);
 469                 out->stroke(out, line, width, &color, captype, jointtype,miterlimit);
 470                 gfxline_free(line);
 471                 break;
 472             }
 473             case OP_STARTCLIP: {
 474                 msg("<trace> replay: STARTCLIP");
 475                 gfxline_t* line = readLine(r);
 476                 out->startclip(out, line);
 477                 gfxline_free(line);
 478                 break;
 479             }
 480             case OP_ENDCLIP: {
 481                 msg("<trace> replay: ENDCLIP");
 482                 out->endclip(out);
 483                 break;
 484             }
 485             case OP_FILL: {
 486                 msg("<trace> replay: FILL");
 487                 gfxcolor_t color = readColor(r);
 488                 gfxline_t* line = readLine(r);
 489                 out->fill(out, line, &color);
 490                 gfxline_free(line);
 491                 break;
 492             }
 493             case OP_FILLBITMAP: {
 494                 msg("<trace> replay: FILLBITMAP");
 495                 gfximage_t img = readImage(r);
 496                 gfxmatrix_t matrix = readMatrix(r);
 497                 gfxline_t* line = readLine(r);
 498                 gfxcxform_t* cxform = readCXForm(r);
 499                 out->fillbitmap(out, line, &img, &matrix, cxform);
 500                 gfxline_free(line);
 501                 if(cxform)
 502                     free(cxform);
 503                 free(img.data);img.data=0;
 504                 break;
 505             }
 506             case OP_FILLGRADIENT: {
 507                 msg("<trace> replay: FILLGRADIENT");
 508                 gfxgradienttype_t type;
 509                 int v = reader_readU8(r);
 510                 switch (v) {
 511                     case 0:
 512                       type = gfxgradient_radial; break;
 513                     case 1:
 514                       type = gfxgradient_linear; break;
 515                 }
 516                 gfxgradient_t*gradient = readGradient(r);
 517                 gfxmatrix_t matrix = readMatrix(r);
 518                 gfxline_t* line = readLine(r);
 519                 out->fillgradient(out, line, gradient, type, &matrix);
 520                 break;
 521             }
 522             case OP_DRAWLINK: {
 523                 msg("<trace> replay: DRAWLINK");
 524                 gfxline_t* line = readLine(r);
 525                 char* s = reader_readString(r);
 526                 out->drawlink(out,line,s);
 527                 gfxline_free(line);
 528                 free(s);
 529                 break;
 530             }
 531             case OP_ADDFONT: {
 532                 msg("<trace> replay: ADDFONT out=%08x(%s)", out, out->name);
 533                 gfxfont_t*font = readFont(r);
 534                 fontlist = gfxfontlist_addfont(fontlist, font);
 535                 out->addfont(out, font);
 536                 break;
 537             }
 538             case OP_DRAWCHAR: {
 539                 char* id = reader_readString(r);
 540                 gfxfont_t*font = id?gfxfontlist_findfont(fontlist, id):0;
 541                 if(i && !font) {
 542                     font = gfxfontlist_findfont(i->fontlist, id);
 543                 }
 544                 U32 glyph = reader_readU32(r);
 545                 msg("<trace> replay: DRAWCHAR font=%s glyph=%d", id, glyph);
 546                 gfxcolor_t color = readColor(r);
 547                 gfxmatrix_t matrix = readMatrix(r);
 548                 out->drawchar(out, font, glyph, &color, &matrix);
 549                 free(id);
 550                 break;
 551             }
 552         }
 553     }
 554 finish:
 555     r->dealloc(r);
 556     /* problem: if we just replayed into a device which stores the
 557        font for later use (the record device itself is a nice example),
 558        then we can't free it yet */
 559     //gfxfontlist_free(fontlist, 1);
 560     gfxfontlist_free(fontlist, 0);
 561 }
 562 void gfxresult_record_replay(gfxresult_t*result, gfxdevice_t*device)
 563 {
 564     internal_result_t*i = (internal_result_t*)result->internal;
 565     replay(0, device, i->data, i->length);
 566 }
 567
 568 static void record_result_write(gfxresult_t*r, int filedesc)
 569 {
 570     internal_result_t*i = (internal_result_t*)r->internal;
 571     write(filedesc, i->data, i->length);
 572 }
 573 static int record_result_save(gfxresult_t*r, const char*filename)
 574 {
 575     internal_result_t*i = (internal_result_t*)r->internal;
 576     FILE*fi = fopen(filename, "wb");
 577     if(!fi) {
 578         fprintf(stderr, "Couldn't open file %s for writing\n", filename);
 579         return -1;
 580     }
 581     fwrite(i->data, i->length, 1, fi);
 582     fclose(fi);
 583     return 0;
 584 }
 585 static void*record_result_get(gfxresult_t*r, const char*name)
 586 {
 587     internal_result_t*i = (internal_result_t*)r->internal;
 588     if(!strcmp(name, "data")) {
 589         return i->data;
 590     } else if(!strcmp(name, "length")) {
 591         return &i->length;
 592     }
 593     return 0;
 594 }
 595 static void record_result_destroy(gfxresult_t*r)
 596 {
 597     internal_result_t*i = (internal_result_t*)r->internal;
 598     if(i->data) {
 599         free(i->data);i->data = 0;
 600     }
 601     free(r->internal);r->internal = 0;
 602     free(r);
 603 }
 604
 605 static unsigned char printable(unsigned char a)
 606 {
 607     if(a<32 || a==127) return '.';
 608     else return a;
 609 }
 610
 611 static void hexdumpMem(unsigned char*data, int len)
 612 {
 613     int t;
 614     char ascii[32];
 615     for(t=0;t<len;t++) {
 616         printf("%02x ", data[t]);
 617         ascii[t&15] = printable(data[t]);
 618         if((t && ((t&15)==15)) || (t==len-1))
 619         {
 620             int s,p=((t)&15)+1;
 621             ascii[p] = 0;
 622             for(s=p-1;s<16;s++) {
 623                 printf("   ");
 624             }
 625             printf(" %s\n", ascii);
 626         }
 627     }
 628 }
 629
 630 void gfxdevice_record_flush(gfxdevice_t*dev, gfxdevice_t*out)
 631 {
 632     internal_t*i = (internal_t*)dev->internal;
 633     if(out) {
 634         int len=0;
 635         void*data = writer_growmemwrite_memptr(&i->w, &len);
 636         replay(dev, out, data, len);
 637     }
 638     writer_growmemwrite_reset(&i->w);
 639 }
 640
 641 static gfxresult_t* record_finish(struct _gfxdevice*dev)
 642 {
 643     internal_t*i = (internal_t*)dev->internal;
 644     msg("<trace> record: %08x END", dev);
 645
 646     if(i->cliplevel) {
 647         msg("<error> Warning: unclosed cliplevels");
 648     }
 649
 650     writer_writeU8(&i->w, OP_END);
 651
 652     gfxfontlist_free(i->fontlist, 0);
 653
 654     internal_result_t*ir = (internal_result_t*)rfx_calloc(sizeof(gfxresult_t));
 655     ir->data = writer_growmemwrite_getmem(&i->w);
 656     ir->length = i->w.pos;
 657     i->w.finish(&i->w);
 658
 659     gfxresult_t*result= (gfxresult_t*)rfx_calloc(sizeof(gfxresult_t));
 660     result->save = record_result_save;
 661     result->get = record_result_get;
 662     result->destroy = record_result_destroy;
 663     result->internal = ir;
 664
 665     free(dev->internal);memset(dev, 0, sizeof(gfxdevice_t));
 666
 667     return result;
 668 }
 669 void gfxdevice_record_init(gfxdevice_t*dev)
 670 {
 671     internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
 672     memset(dev, 0, sizeof(gfxdevice_t));
 673
 674     dev->name = "record";
 675
 676     dev->internal = i;
 677
 678     writer_init_growingmemwriter(&i->w, 1048576);
 679     i->fontlist = gfxfontlist_create();
 680     i->cliplevel = 0;
 681
 682     dev->setparameter = record_setparameter;
 683     dev->startpage = record_startpage;
 684     dev->startclip = record_startclip;
 685     dev->endclip = record_endclip;
 686     dev->stroke = record_stroke;
 687     dev->fill = record_fill;
 688     dev->fillbitmap = record_fillbitmap;
 689     dev->fillgradient = record_fillgradient;
 690     dev->addfont = record_addfont;
 691     dev->drawchar = record_drawchar;
 692     dev->drawlink = record_drawlink;
 693     dev->endpage = record_endpage;
 694     dev->finish = record_finish;
 695 }
 696