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 <zlib.h>
  33 #include <string.h>
  34 #include <assert.h>
  35 #include "../gfxdevice.h"
  36 #include "../gfxtools.h"
  37 #include "../types.h"
  38 #include "../bitio.h"
  39 #include "../log.h"
  40 #include "../os.h"
  41 #include "../png.h"
  42 #ifdef HAVE_FASTLZ
  43 #include "../fastlz.h"
  44 #endif
  45 #include "record.h"
  46
  47 //#define STATS
  48 #define COMPRESS_IMAGES
  49 //#define FILTER_IMAGES
  50
  51 typedef struct _state {
  52     char*last_string[16];
  53     gfxcolor_t last_color[16];
  54     gfxmatrix_t last_matrix[16];
  55
  56 #ifdef STATS
  57     int size_matrices;
  58     int size_positions;
  59     int size_images;
  60     int size_lines;
  61     int size_colors;
  62     int size_fonts;
  63     int size_chars;
  64 #endif
  65 } state_t;
  66
  67 typedef struct _internal {
  68     gfxfontlist_t* fontlist;
  69     state_t state;
  70
  71     writer_t w;
  72     int cliplevel;
  73     char use_tempfile;
  74     char*filename;
  75 } internal_t;
  76
  77 typedef struct _internal_result {
  78     char use_tempfile;
  79     char*filename;
  80     void*data;
  81     int length;
  82 } internal_result_t;
  83
  84 #define OP_END 0x00
  85 #define OP_SETPARAM 0x01
  86 #define OP_STROKE 0x02
  87 #define OP_STARTCLIP 0x03
  88 #define OP_ENDCLIP 0x04
  89 #define OP_FILL 0x05
  90 #define OP_FILLBITMAP 0x06
  91 #define OP_FILLGRADIENT 0x07
  92 #define OP_ADDFONT 0x08
  93 #define OP_DRAWCHAR 0x09
  94 #define OP_DRAWLINK 0x0a
  95 #define OP_STARTPAGE 0x0b
  96 #define OP_ENDPAGE 0x0c
  97 #define OP_FINISH 0x0d
  98
  99 #define FLAG_SAME_AS_LAST 0x10
 100
 101 #define LINE_MOVETO 0x0e
 102 #define LINE_LINETO 0x0f
 103 #define LINE_SPLINETO 0x10
 104
 105 /* ----------------- reading/writing of low level primitives -------------- */
 106
 107 static void dumpLine(writer_t*w, state_t*state, gfxline_t*line)
 108 {
 109     while(line) {
 110         if(line->type == gfx_moveTo) {
 111             writer_writeU8(w, LINE_MOVETO);
 112             writer_writeDouble(w, line->x);
 113             writer_writeDouble(w, line->y);
 114 #ifdef STATS
 115             state->size_lines += 1+8+8;
 116 #endif
 117         } else if(line->type == gfx_lineTo) {
 118             writer_writeU8(w, LINE_LINETO);
 119             writer_writeDouble(w, line->x);
 120             writer_writeDouble(w, line->y);
 121 #ifdef STATS
 122             state->size_lines += 1+8+8;
 123 #endif
 124         } else if(line->type == gfx_splineTo) {
 125             writer_writeU8(w, LINE_SPLINETO);
 126             writer_writeDouble(w, line->x);
 127             writer_writeDouble(w, line->y);
 128             writer_writeDouble(w, line->sx);
 129             writer_writeDouble(w, line->sy);
 130 #ifdef STATS
 131             state->size_lines += 1+8+8+8+8;
 132 #endif
 133         }
 134         line = line->next;
 135     }
 136     writer_writeU8(w, OP_END);
 137 #ifdef STATS
 138     state->size_lines += 1;
 139 #endif
 140 }
 141 static gfxline_t* readLine(reader_t*r, state_t*s)
 142 {
 143     gfxline_t*start = 0, *pos = 0;
 144     while(1) {
 145         unsigned char op = reader_readU8(r);
 146         if(op == OP_END)
 147             break;
 148         gfxline_t*line = (gfxline_t*)rfx_calloc(sizeof(gfxline_t));
 149         if(!start) {
 150             start = pos = line;
 151         } else {
 152             pos->next = line;
 153             pos = line;
 154         }
 155         if(op == LINE_MOVETO) {
 156             line->type = gfx_moveTo;
 157             line->x = reader_readDouble(r);
 158             line->y = reader_readDouble(r);
 159         } else if(op == LINE_LINETO) {
 160             line->type = gfx_lineTo;
 161             line->x = reader_readDouble(r);
 162             line->y = reader_readDouble(r);
 163         } else if(op == LINE_SPLINETO) {
 164             line->type = gfx_splineTo;
 165             line->x = reader_readDouble(r);
 166             line->y = reader_readDouble(r);
 167             line->sx = reader_readDouble(r);
 168             line->sy = reader_readDouble(r);
 169         }
 170     }
 171     return start;
 172 }
 173
 174 static void dumpImage(writer_t*w, state_t*state, gfximage_t*img)
 175 {
 176     int oldpos = w->pos;
 177     writer_writeU16(w, img->width);
 178     writer_writeU16(w, img->height);
 179 #ifdef COMPRESS_IMAGES
 180     //35.3% images (2027305 bytes) (with filter, Z_BEST_COMPRESSION)
 181     //39.9% images (2458904 bytes) (with filter, Z_BEST_SPEED)
 182     //45.2% images (3055340 bytes) (without filter)
 183     //45.9% images (3149247 bytes) (without filter, 5)
 184     //48.0% images (3480495 bytes) (with filter, fastlz)
 185     //48.0% images (3488650 bytes) (without filter, Z_BEST_SPEED)
 186     //55.3% images (4665889 bytes) (without filter, fastlz level 2)
 187     //55.6% images (4726334 bytes) (without filter, fastlz level 1)
 188     //83.0% images (18091804 bytes) (no compression)
 189
 190     gfxcolor_t*image;
 191 #ifdef FILTER_IMAGES
 192     unsigned char*filter = malloc(img->height);
 193     int y;
 194     image = malloc(img->width*img->height*sizeof(gfxcolor_t));
 195     for(y=0;y<img->height;y++) {
 196         filter[y] = png_apply_filter_32(
 197                 (void*)&image[y*img->width],
 198                 (void*)&img->data[y*img->width], img->width, y);
 199     }
 200 #else
 201     image = img->data;
 202 #endif
 203     int size = img->width*img->height;
 204     uLongf compressdata_size = compressBound(size*sizeof(gfxcolor_t));
 205     void*compressdata = malloc(compressdata_size);
 206
 207 #ifdef HAVE_FASTLZ
 208     compressdata_size = fastlz_compress_level(2, (void*)image, size*sizeof(gfxcolor_t), compressdata);
 209 #else
 210     compress2(compressdata, &compressdata_size, (void*)image, sizeof(gfxcolor_t)*size, Z_BEST_SPEED);
 211 #endif
 212
 213     writer_writeU32(w, compressdata_size);
 214 #ifdef FILTER_IMAGES
 215     w->write(w, filter, img->height);
 216     free(filter);
 217     free(image);
 218 #endif
 219     w->write(w, compressdata, compressdata_size);
 220 #else
 221     w->write(w, img->data, img->width*img->height*sizeof(gfxcolor_t));
 222 #endif
 223 #ifdef STATS
 224     state->size_images += w->pos - oldpos;
 225 #endif
 226 }
 227 static gfximage_t readImage(reader_t*r, state_t*state)
 228 {
 229     gfximage_t img;
 230     img.width = reader_readU16(r);
 231     img.height = reader_readU16(r);
 232     uLongf size = img.width*img.height*sizeof(gfxcolor_t);
 233     img.data = malloc(size);
 234 #ifdef COMPRESS_IMAGES
 235     uLongf compressdata_size = reader_readU32(r);
 236     void*compressdata = malloc(compressdata_size);
 237 # ifdef FILTER_IMAGES
 238     unsigned char*filter = malloc(img.height);
 239     r->read(r, filter, img.height);
 240 # endif
 241     r->read(r, compressdata, compressdata_size);
 242
 243 # ifdef HAVE_FASTLZ
 244     fastlz_decompress(compressdata, compressdata_size, (void*)img.data, size);
 245 # else
 246     uncompress((void*)img.data, &size, compressdata, compressdata_size);
 247 # endif
 248
 249 # ifdef FILTER_IMAGES
 250     int y;
 251     unsigned char*line = malloc(img.width*sizeof(gfxcolor_t));
 252     for(y=0;y<img.height;y++) {
 253         png_inverse_filter_32(filter[y], (void*)&img.data[y*img.width],
 254                               y?(void*)&img.data[(y-1)*img.width]:(void*)0,
 255                               line, img.width);
 256         memcpy(&img.data[y*img.width], line, img.width*sizeof(gfxcolor_t));
 257     }
 258     free(line);
 259     free(filter);
 260 # endif
 261
 262 #else
 263     r->read(r, img.data, size);
 264 #endif
 265     return img;
 266 }
 267
 268 static void dumpMatrix(writer_t*w, state_t*state, gfxmatrix_t*matrix)
 269 {
 270     writer_writeDouble(w, matrix->m00);
 271     writer_writeDouble(w, matrix->m01);
 272     writer_writeDouble(w, matrix->m10);
 273     writer_writeDouble(w, matrix->m11);
 274     writer_writeDouble(w, matrix->tx);
 275     writer_writeDouble(w, matrix->ty);
 276 #ifdef STATS
 277     state->size_matrices += 6*8;
 278 #endif
 279 }
 280 static gfxmatrix_t readMatrix(reader_t*r, state_t*state)
 281 {
 282     gfxmatrix_t matrix;
 283     matrix.m00 = reader_readDouble(r);
 284     matrix.m01 = reader_readDouble(r);
 285     matrix.m10 = reader_readDouble(r);
 286     matrix.m11 = reader_readDouble(r);
 287     matrix.tx = reader_readDouble(r);
 288     matrix.ty = reader_readDouble(r);
 289     return matrix;
 290 }
 291 static void dumpXY(writer_t*w, state_t*state, gfxmatrix_t*matrix)
 292 {
 293     writer_writeDouble(w, matrix->tx);
 294     writer_writeDouble(w, matrix->ty);
 295 #ifdef STATS
 296     state->size_positions += 2*8;
 297 #endif
 298 }
 299 static void readXY(reader_t*r, state_t*state, gfxmatrix_t*m)
 300 {
 301     m->tx = reader_readDouble(r);
 302     m->ty = reader_readDouble(r);
 303 }
 304
 305 static void dumpColor(writer_t*w, state_t*state, gfxcolor_t*color)
 306 {
 307     writer_writeU8(w, color->r);
 308     writer_writeU8(w, color->g);
 309     writer_writeU8(w, color->b);
 310     writer_writeU8(w, color->a);
 311 #ifdef STATS
 312     state->size_colors += 4;
 313 #endif
 314 }
 315 static gfxcolor_t readColor(reader_t*r, state_t*state)
 316 {
 317     gfxcolor_t col;
 318     col.r = reader_readU8(r);
 319     col.g = reader_readU8(r);
 320     col.b = reader_readU8(r);
 321     col.a = reader_readU8(r);
 322     return col;
 323 }
 324
 325 static void dumpGradient(writer_t*w, state_t*state, gfxgradient_t*gradient)
 326 {
 327     while(gradient) {
 328         writer_writeU8(w, 1);
 329         dumpColor(w, state, &gradient->color);
 330         writer_writeFloat(w, gradient->pos);
 331         gradient = gradient->next;
 332     }
 333     writer_writeU8(w, 0);
 334 }
 335 static gfxgradient_t* readGradient(reader_t*r, state_t*state)
 336 {
 337     gfxgradient_t*start = 0, *pos = 0;
 338     while(1) {
 339         U8 op = reader_readU8(r);
 340         if(!op)
 341             break;
 342         gfxgradient_t*g = (gfxgradient_t*)rfx_calloc(sizeof(gfxgradient_t));
 343         if(!start) {
 344             start = pos = g;
 345         } else {
 346             pos->next = g;
 347             pos = g;
 348         }
 349         g->color = readColor(r, state);
 350         g->pos = reader_readFloat(r);
 351     }
 352     return start;
 353 }
 354
 355 static void dumpCXForm(writer_t*w, state_t*state, gfxcxform_t*c)
 356 {
 357     if(!c) {
 358         writer_writeU8(w, 0);
 359     } else {
 360         writer_writeU8(w, 1);
 361         writer_writeFloat(w, c->rr); writer_writeFloat(w, c->rg); writer_writeFloat(w, c->rb); writer_writeFloat(w, c->ra);
 362         writer_writeFloat(w, c->gr); writer_writeFloat(w, c->gg); writer_writeFloat(w, c->gb); writer_writeFloat(w, c->ga);
 363         writer_writeFloat(w, c->br); writer_writeFloat(w, c->bg); writer_writeFloat(w, c->bb); writer_writeFloat(w, c->ba);
 364         writer_writeFloat(w, c->ar); writer_writeFloat(w, c->ag); writer_writeFloat(w, c->ab); writer_writeFloat(w, c->aa);
 365     }
 366 }
 367 static gfxcxform_t* readCXForm(reader_t*r, state_t*state)
 368 {
 369     U8 type = reader_readU8(r);
 370     if(!type)
 371         return 0;
 372     gfxcxform_t* c = (gfxcxform_t*)rfx_calloc(sizeof(gfxcxform_t));
 373     c->rr = reader_readFloat(r); c->rg = reader_readFloat(r); c->rb = reader_readFloat(r); c->ra = reader_readFloat(r);
 374     c->gr = reader_readFloat(r); c->gg = reader_readFloat(r); c->gb = reader_readFloat(r); c->ga = reader_readFloat(r);
 375     c->br = reader_readFloat(r); c->bg = reader_readFloat(r); c->bb = reader_readFloat(r); c->ba = reader_readFloat(r);
 376     c->ar = reader_readFloat(r); c->ag = reader_readFloat(r); c->ab = reader_readFloat(r); c->aa = reader_readFloat(r);
 377     return c;
 378 }
 379
 380 static void dumpFont(writer_t*w, state_t*state, gfxfont_t*font)
 381 {
 382     int oldpos = w->pos;
 383 #ifdef STATS
 384     int old_size_lines = state->size_lines;
 385 #endif
 386     writer_writeString(w, font->id);
 387     writer_writeU32(w, font->num_glyphs);
 388     writer_writeU32(w, font->max_unicode);
 389     writer_writeDouble(w, font->ascent);
 390     writer_writeDouble(w, font->descent);
 391     int t;
 392     for(t=0;t<font->num_glyphs;t++) {
 393         dumpLine(w, state, font->glyphs[t].line);
 394         writer_writeDouble(w, font->glyphs[t].advance);
 395         writer_writeU32(w, font->glyphs[t].unicode);
 396         if(font->glyphs[t].name) {
 397             writer_writeString(w,font->glyphs[t].name);
 398         } else {
 399             writer_writeU8(w,0);
 400         }
 401     }
 402     for(t=0;t<font->max_unicode;t++) {
 403         writer_writeU32(w, font->unicode2glyph[t]);
 404     }
 405     writer_writeU32(w, font->kerning_size);
 406     for(t=0;t<font->kerning_size;t++) {
 407         writer_writeU32(w, font->kerning[t].c1);
 408         writer_writeU32(w, font->kerning[t].c2);
 409         writer_writeU32(w, font->kerning[t].advance);
 410     }
 411 #ifdef STATS
 412     state->size_lines = old_size_lines;
 413     state->size_fonts += w->pos - oldpos;
 414 #endif
 415 }
 416 static gfxfont_t*readFont(reader_t*r, state_t*state)
 417 {
 418     gfxfont_t* font = (gfxfont_t*)rfx_calloc(sizeof(gfxfont_t));
 419     font->id = reader_readString(r);
 420     font->num_glyphs = reader_readU32(r);
 421     font->max_unicode = reader_readU32(r);
 422     font->ascent = reader_readDouble(r);
 423     font->descent = reader_readDouble(r);
 424     font->glyphs = (gfxglyph_t*)rfx_calloc(sizeof(gfxglyph_t)*font->num_glyphs);
 425     font->unicode2glyph = (int*)rfx_calloc(sizeof(font->unicode2glyph[0])*font->max_unicode);
 426     int t;
 427     for(t=0;t<font->num_glyphs;t++) {
 428         font->glyphs[t].line = readLine(r, state);
 429         font->glyphs[t].advance = reader_readDouble(r);
 430         font->glyphs[t].unicode = reader_readU32(r);
 431         font->glyphs[t].name = reader_readString(r);
 432         if(!font->glyphs[t].name[0]) {
 433             free((void*)(font->glyphs[t].name));
 434             font->glyphs[t].name = 0;
 435         }
 436     }
 437     for(t=0;t<font->max_unicode;t++) {
 438         font->unicode2glyph[t] = reader_readU32(r);
 439     }
 440     font->kerning_size = reader_readU32(r);
 441     if(font->kerning_size) {
 442         font->kerning = malloc(sizeof(gfxkerning_t)*font->kerning_size);
 443         for(t=0;t<font->kerning_size;t++) {
 444             font->kerning[t].c1 = reader_readU32(r);
 445             font->kerning[t].c2 = reader_readU32(r);
 446             font->kerning[t].advance = reader_readU32(r);
 447         }
 448     }
 449     return font;
 450 }
 451
 452 /* ----------------- reading/writing of primitives with caching -------------- */
 453
 454 static char* read_string(reader_t*r, state_t*state, U8 id, U8 flags)
 455 {
 456     assert(id>=0 && id<16);
 457     if(flags&FLAG_SAME_AS_LAST) {
 458         assert(state->last_string[id]);
 459         return strdup(state->last_string[id]);
 460     }
 461     char*s = reader_readString(r);
 462     state->last_string[id] = strdup(s);
 463     return s;
 464 }
 465 static gfxcolor_t read_color(reader_t*r, state_t*state, U8 id, U8 flags)
 466 {
 467     assert(id>=0 && id<16);
 468     if(flags&FLAG_SAME_AS_LAST)
 469         return state->last_color[id];
 470     gfxcolor_t c = readColor(r, state);
 471     state->last_color[id] = c;
 472     return c;
 473 }
 474 static gfxmatrix_t read_matrix(reader_t*r, state_t*state, U8 id, U8 flags)
 475 {
 476     assert(id>=0 && id<16);
 477     if(flags&FLAG_SAME_AS_LAST) {
 478         gfxmatrix_t m = state->last_matrix[id];
 479         readXY(r, state, &m);
 480         return m;
 481     }
 482     gfxmatrix_t m = readMatrix(r, state);
 483     state->last_matrix[id] = m;
 484     return m;
 485 }
 486
 487 /* --------------------------- record device operations ---------------------- */
 488
 489 static int record_setparameter(struct _gfxdevice*dev, const char*key, const char*value)
 490 {
 491     internal_t*i = (internal_t*)dev->internal;
 492     msg("<trace> record: %08x SETPARAM %s %s\n", dev, key, value);
 493     writer_writeU8(&i->w, OP_SETPARAM);
 494     writer_writeString(&i->w, key);
 495     writer_writeString(&i->w, value);
 496     return 1;
 497 }
 498
 499 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)
 500 {
 501     internal_t*i = (internal_t*)dev->internal;
 502     msg("<trace> record: %08x STROKE\n", dev);
 503     writer_writeU8(&i->w, OP_STROKE);
 504     writer_writeDouble(&i->w, width);
 505     writer_writeDouble(&i->w, miterLimit);
 506     dumpColor(&i->w, &i->state, color);
 507     writer_writeU8(&i->w, cap_style);
 508     writer_writeU8(&i->w, joint_style);
 509     dumpLine(&i->w, &i->state, line);
 510 }
 511
 512 static void record_startclip(struct _gfxdevice*dev, gfxline_t*line)
 513 {
 514     internal_t*i = (internal_t*)dev->internal;
 515     msg("<trace> record: %08x STARTCLIP\n", dev);
 516     writer_writeU8(&i->w, OP_STARTCLIP);
 517     dumpLine(&i->w, &i->state, line);
 518     i->cliplevel++;
 519 }
 520
 521 static void record_endclip(struct _gfxdevice*dev)
 522 {
 523     internal_t*i = (internal_t*)dev->internal;
 524     msg("<trace> record: %08x ENDCLIP\n", dev);
 525     writer_writeU8(&i->w, OP_ENDCLIP);
 526     i->cliplevel--;
 527     if(i->cliplevel<0) {
 528         msg("<error> record: endclip() without startclip()");
 529     }
 530 }
 531
 532 static void record_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
 533 {
 534     internal_t*i = (internal_t*)dev->internal;
 535     msg("<trace> record: %08x FILL\n", dev);
 536     writer_writeU8(&i->w, OP_FILL);
 537     dumpColor(&i->w, &i->state, color);
 538     dumpLine(&i->w, &i->state, line);
 539 }
 540
 541 static void record_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
 542 {
 543     internal_t*i = (internal_t*)dev->internal;
 544     msg("<trace> record: %08x FILLBITMAP\n", dev);
 545     writer_writeU8(&i->w, OP_FILLBITMAP);
 546     dumpImage(&i->w, &i->state, img);
 547     dumpMatrix(&i->w, &i->state, matrix);
 548     dumpLine(&i->w, &i->state, line);
 549     dumpCXForm(&i->w, &i->state, cxform);
 550 }
 551
 552 static void record_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
 553 {
 554     internal_t*i = (internal_t*)dev->internal;
 555     msg("<trace> record: %08x FILLGRADIENT %08x\n", dev, gradient);
 556     writer_writeU8(&i->w, OP_FILLGRADIENT);
 557     writer_writeU8(&i->w, type);
 558     dumpGradient(&i->w, &i->state, gradient);
 559     dumpMatrix(&i->w, &i->state, matrix);
 560     dumpLine(&i->w, &i->state, line);
 561 }
 562
 563 static void record_addfont(struct _gfxdevice*dev, gfxfont_t*font)
 564 {
 565     internal_t*i = (internal_t*)dev->internal;
 566     msg("<trace> record: %08x ADDFONT %s\n", dev, font->id);
 567     if(font && !gfxfontlist_hasfont(i->fontlist, font)) {
 568         writer_writeU8(&i->w, OP_ADDFONT);
 569         dumpFont(&i->w, &i->state, font);
 570         i->fontlist = gfxfontlist_addfont(i->fontlist, font);
 571     }
 572 }
 573
 574 static void record_drawchar(struct _gfxdevice*dev, gfxfont_t*font, int glyphnr, gfxcolor_t*color, gfxmatrix_t*matrix)
 575 {
 576     internal_t*i = (internal_t*)dev->internal;
 577     if(font && !gfxfontlist_hasfont(i->fontlist, font)) {
 578         record_addfont(dev, font);
 579     }
 580
 581     msg("<trace> record: %08x DRAWCHAR %d\n", glyphnr, dev);
 582     const char*font_id = font->id?font->id:"*NULL*";
 583
 584     gfxmatrix_t*l = &i->state.last_matrix[OP_DRAWCHAR];
 585
 586     char same_font = i->state.last_string[OP_DRAWCHAR] && !strcmp(i->state.last_string[OP_DRAWCHAR], font_id);
 587     char same_matrix = (l->m00 == matrix->m00) && (l->m01 == matrix->m01) && (l->m10 == matrix->m10) && (l->m11 == matrix->m11);
 588     char same_color = !memcmp(color, &i->state.last_color[OP_DRAWCHAR], sizeof(gfxcolor_t));
 589     U8 flags = 0;
 590     if(same_font && same_matrix && same_color)
 591         flags |= FLAG_SAME_AS_LAST;
 592
 593     writer_writeU8(&i->w, OP_DRAWCHAR|flags);
 594     writer_writeU32(&i->w, glyphnr);
 595 #ifdef STATS
 596     i->state.size_chars += 5;
 597 #endif
 598
 599     if(!(flags&FLAG_SAME_AS_LAST)) {
 600         writer_writeString(&i->w, font_id);
 601         dumpColor(&i->w, &i->state, color);
 602         dumpMatrix(&i->w, &i->state, matrix);
 603         i->state.last_string[OP_DRAWCHAR] = strdup(font_id);
 604         i->state.last_color[OP_DRAWCHAR] = *color;
 605         i->state.last_matrix[OP_DRAWCHAR] = *matrix;
 606     } else {
 607         dumpXY(&i->w, &i->state, matrix);
 608     }
 609 }
 610
 611 static void record_startpage(struct _gfxdevice*dev, int width, int height)
 612 {
 613     internal_t*i = (internal_t*)dev->internal;
 614     msg("<trace> record: %08x STARTPAGE\n", dev);
 615     writer_writeU8(&i->w, OP_STARTPAGE);
 616     writer_writeU16(&i->w, width);
 617     writer_writeU16(&i->w, height);
 618 }
 619
 620 static void record_endpage(struct _gfxdevice*dev)
 621 {
 622     internal_t*i = (internal_t*)dev->internal;
 623     msg("<trace> record: %08x ENDPAGE\n", dev);
 624     writer_writeU8(&i->w, OP_ENDPAGE);
 625 }
 626
 627 static void record_drawlink(struct _gfxdevice*dev, gfxline_t*line, const char*action)
 628 {
 629     internal_t*i = (internal_t*)dev->internal;
 630     msg("<trace> record: %08x DRAWLINK\n", dev);
 631     writer_writeU8(&i->w, OP_DRAWLINK);
 632     dumpLine(&i->w, &i->state, line);
 633     writer_writeString(&i->w, action);
 634 }
 635
 636 /* ------------------------------- replaying --------------------------------- */
 637
 638 static void replay(struct _gfxdevice*dev, gfxdevice_t*out, reader_t*r)
 639 {
 640     internal_t*i = 0;
 641     if(dev) {
 642         i = (internal_t*)dev->internal;
 643     }
 644
 645     state_t state;
 646     memset(&state, 0, sizeof(state));
 647
 648     gfxfontlist_t* fontlist = gfxfontlist_create();
 649
 650     while(1) {
 651         unsigned char op;
 652         if(r->read(r, &op, 1)!=1)
 653             break;
 654         unsigned char flags = op&0xf0;
 655         op&=0x0f;
 656
 657         switch(op) {
 658             case OP_END:
 659                 goto finish;
 660             case OP_SETPARAM: {
 661                 msg("<trace> replay: SETPARAM");
 662                 char*key;
 663                 char*value;
 664                 key = reader_readString(r);
 665                 value = reader_readString(r);
 666                 out->setparameter(out, key, value);
 667                 free(key);
 668                 free(value);
 669                 break;
 670             }
 671             case OP_STARTPAGE: {
 672                 msg("<trace> replay: STARTPAGE");
 673                 U16 width = reader_readU16(r);
 674                 U16 height = reader_readU16(r);
 675                 out->startpage(out, width, height);
 676                 break;
 677             }
 678             case OP_ENDPAGE: {
 679                 msg("<trace> replay: ENDPAGE");
 680                 out->endpage(out);
 681                 break;
 682             }
 683             case OP_FINISH: {
 684                 msg("<trace> replay: FINISH");
 685                 break;
 686             }
 687             case OP_STROKE: {
 688                 msg("<trace> replay: STROKE");
 689                 double width = reader_readDouble(r);
 690                 double miterlimit = reader_readDouble(r);
 691                 gfxcolor_t color = readColor(r, &state);
 692                 gfx_capType captype;
 693                 int v = reader_readU8(r);
 694                 switch (v) {
 695                     case 0: captype = gfx_capButt; break;
 696                     case 1: captype = gfx_capRound; break;
 697                     case 2: captype = gfx_capSquare; break;
 698                 }
 699                 gfx_joinType jointtype;
 700                 v = reader_readU8(r);
 701                 switch (v) {
 702                     case 0: jointtype = gfx_joinMiter; break;
 703                     case 1: jointtype = gfx_joinRound; break;
 704                     case 2: jointtype = gfx_joinBevel; break;
 705                 }
 706                 gfxline_t* line = readLine(r, &state);
 707                 out->stroke(out, line, width, &color, captype, jointtype,miterlimit);
 708                 gfxline_free(line);
 709                 break;
 710             }
 711             case OP_STARTCLIP: {
 712                 msg("<trace> replay: STARTCLIP");
 713                 gfxline_t* line = readLine(r, &state);
 714                 out->startclip(out, line);
 715                 gfxline_free(line);
 716                 break;
 717             }
 718             case OP_ENDCLIP: {
 719                 msg("<trace> replay: ENDCLIP");
 720                 out->endclip(out);
 721                 break;
 722             }
 723             case OP_FILL: {
 724                 msg("<trace> replay: FILL");
 725                 gfxcolor_t color = readColor(r, &state);
 726                 gfxline_t* line = readLine(r, &state);
 727                 out->fill(out, line, &color);
 728                 gfxline_free(line);
 729                 break;
 730             }
 731             case OP_FILLBITMAP: {
 732                 msg("<trace> replay: FILLBITMAP");
 733                 gfximage_t img = readImage(r, &state);
 734                 gfxmatrix_t matrix = readMatrix(r, &state);
 735                 gfxline_t* line = readLine(r, &state);
 736                 gfxcxform_t* cxform = readCXForm(r, &state);
 737                 out->fillbitmap(out, line, &img, &matrix, cxform);
 738                 gfxline_free(line);
 739                 if(cxform)
 740                     free(cxform);
 741                 free(img.data);img.data=0;
 742                 break;
 743             }
 744             case OP_FILLGRADIENT: {
 745                 msg("<trace> replay: FILLGRADIENT");
 746                 gfxgradienttype_t type;
 747                 int v = reader_readU8(r);
 748                 switch (v) {
 749                     case 0:
 750                       type = gfxgradient_radial; break;
 751                     case 1:
 752                       type = gfxgradient_linear; break;
 753                 }
 754                 gfxgradient_t*gradient = readGradient(r, &state);
 755                 gfxmatrix_t matrix = readMatrix(r, &state);
 756                 gfxline_t* line = readLine(r, &state);
 757                 out->fillgradient(out, line, gradient, type, &matrix);
 758                 break;
 759             }
 760             case OP_DRAWLINK: {
 761                 msg("<trace> replay: DRAWLINK");
 762                 gfxline_t* line = readLine(r, &state);
 763                 char* s = reader_readString(r);
 764                 out->drawlink(out,line,s);
 765                 gfxline_free(line);
 766                 free(s);
 767                 break;
 768             }
 769             case OP_ADDFONT: {
 770                 msg("<trace> replay: ADDFONT out=%08x(%s)", out, out->name);
 771                 gfxfont_t*font = readFont(r, &state);
 772                 fontlist = gfxfontlist_addfont(fontlist, font);
 773                 out->addfont(out, font);
 774                 break;
 775             }
 776             case OP_DRAWCHAR: {
 777                 U32 glyph = reader_readU32(r);
 778                 gfxmatrix_t m = {1,0,0, 0,1,0};
 779                 char* id = read_string(r, &state, op, flags);
 780                 gfxcolor_t color = read_color(r, &state, op, flags);
 781                 gfxmatrix_t matrix = read_matrix(r, &state, op, flags);
 782
 783                 gfxfont_t*font = id?gfxfontlist_findfont(fontlist, id):0;
 784                 if(i && !font) {
 785                     font = gfxfontlist_findfont(i->fontlist, id);
 786                 }
 787                 msg("<trace> replay: DRAWCHAR font=%s glyph=%d", id, glyph);
 788                 out->drawchar(out, font, glyph, &color, &matrix);
 789                 free(id);
 790                 break;
 791             }
 792         }
 793     }
 794 finish:
 795     r->dealloc(r);
 796     /* problem: if we just replayed into a device which stores the
 797        font for later use (the record device itself is a nice example),
 798        then we can't free it yet */
 799     //gfxfontlist_free(fontlist, 1);
 800     gfxfontlist_free(fontlist, 0);
 801 }
 802 void gfxresult_record_replay(gfxresult_t*result, gfxdevice_t*device)
 803 {
 804     internal_result_t*i = (internal_result_t*)result->internal;
 805
 806     reader_t r;
 807     if(i->use_tempfile) {
 808         reader_init_filereader2(&r, i->filename);
 809     } else {
 810         reader_init_memreader(&r, i->data, i->length);
 811     }
 812
 813     replay(0, device, &r);
 814 }
 815
 816 static void record_result_write(gfxresult_t*r, int filedesc)
 817 {
 818     internal_result_t*i = (internal_result_t*)r->internal;
 819     if(i->data) {
 820         write(filedesc, i->data, i->length);
 821     }
 822 }
 823 static int record_result_save(gfxresult_t*r, const char*filename)
 824 {
 825     internal_result_t*i = (internal_result_t*)r->internal;
 826     if(i->use_tempfile) {
 827         move_file(i->filename, filename);
 828     } else {
 829         FILE*fi = fopen(filename, "wb");
 830         if(!fi) {
 831             fprintf(stderr, "Couldn't open file %s for writing\n", filename);
 832             return -1;
 833         }
 834         fwrite(i->data, i->length, 1, fi);
 835         fclose(fi);
 836     }
 837     return 0;
 838 }
 839 static void*record_result_get(gfxresult_t*r, const char*name)
 840 {
 841     internal_result_t*i = (internal_result_t*)r->internal;
 842     if(!strcmp(name, "data")) {
 843         return i->data;
 844     } else if(!strcmp(name, "length")) {
 845         return &i->length;
 846     }
 847     return 0;
 848 }
 849 static void record_result_destroy(gfxresult_t*r)
 850 {
 851     internal_result_t*i = (internal_result_t*)r->internal;
 852     if(i->data) {
 853         free(i->data);i->data = 0;
 854     }
 855     if(i->filename) {
 856         unlink(i->filename);
 857         free(i->filename);
 858     }
 859     free(r->internal);r->internal = 0;
 860     free(r);
 861 }
 862
 863 static unsigned char printable(unsigned char a)
 864 {
 865     if(a<32 || a==127) return '.';
 866     else return a;
 867 }
 868
 869 static void hexdumpMem(unsigned char*data, int len)
 870 {
 871     int t;
 872     char ascii[32];
 873     for(t=0;t<len;t++) {
 874         printf("%02x ", data[t]);
 875         ascii[t&15] = printable(data[t]);
 876         if((t && ((t&15)==15)) || (t==len-1))
 877         {
 878             int s,p=((t)&15)+1;
 879             ascii[p] = 0;
 880             for(s=p-1;s<16;s++) {
 881                 printf("   ");
 882             }
 883             printf(" %s\n", ascii);
 884         }
 885     }
 886 }
 887
 888 void gfxdevice_record_flush(gfxdevice_t*dev, gfxdevice_t*out)
 889 {
 890     internal_t*i = (internal_t*)dev->internal;
 891     if(out) {
 892         if(!i->use_tempfile) {
 893             int len=0;
 894             void*data = writer_growmemwrite_memptr(&i->w, &len);
 895             reader_t r;
 896             reader_init_memreader(&r, data, len);
 897             replay(dev, out, &r);
 898             writer_growmemwrite_reset(&i->w);
 899         } else {
 900             msg("<fatal> Flushing not supported for file based record device");
 901             exit(1);
 902         }
 903     }
 904 }
 905
 906 static gfxresult_t* record_finish(struct _gfxdevice*dev)
 907 {
 908     internal_t*i = (internal_t*)dev->internal;
 909     msg("<trace> record: %08x END", dev);
 910
 911     if(i->cliplevel) {
 912         msg("<error> Warning: unclosed cliplevels");
 913     }
 914
 915 #ifdef STATS
 916     int total = i->w.pos;
 917     if(total && i->use_tempfile) {
 918         state_t*s = &i->state;
 919         msg("<notice> record device finished. stats:");
 920         msg("<notice> %4.1f%% matrices (%d bytes)", s->size_matrices*100.0/total, s->size_matrices);
 921         msg("<notice> %4.1f%% positions (%d bytes)", s->size_positions*100.0/total, s->size_positions);
 922         msg("<notice> %4.1f%% colors (%d bytes)", s->size_colors*100.0/total, s->size_colors);
 923         msg("<notice> %4.1f%% lines (%d bytes)", s->size_lines*100.0/total, s->size_lines);
 924         msg("<notice> %4.1f%% fonts (%d bytes)", s->size_fonts*100.0/total, s->size_fonts);
 925         msg("<notice> %4.1f%% images (%d bytes)", s->size_images*100.0/total, s->size_images);
 926         msg("<notice> %4.1f%% characters (%d bytes)", s->size_chars*100.0/total, s->size_chars);
 927         msg("<notice> total: %d bytes", total);
 928     }
 929 #endif
 930
 931     writer_writeU8(&i->w, OP_END);
 932
 933     gfxfontlist_free(i->fontlist, 0);
 934
 935     internal_result_t*ir = (internal_result_t*)rfx_calloc(sizeof(gfxresult_t));
 936
 937     ir->use_tempfile = i->use_tempfile;
 938     if(i->use_tempfile) {
 939         ir->filename = i->filename;
 940     } else {
 941         ir->data = writer_growmemwrite_getmem(&i->w);
 942         ir->length = i->w.pos;
 943     }
 944     i->w.finish(&i->w);
 945
 946     gfxresult_t*result= (gfxresult_t*)rfx_calloc(sizeof(gfxresult_t));
 947     result->save = record_result_save;
 948     result->get = record_result_get;
 949     result->destroy = record_result_destroy;
 950     result->internal = ir;
 951
 952     free(dev->internal);memset(dev, 0, sizeof(gfxdevice_t));
 953
 954     return result;
 955 }
 956
 957 void gfxdevice_record_init(gfxdevice_t*dev, char use_tempfile)
 958 {
 959     internal_t*i = (internal_t*)rfx_calloc(sizeof(internal_t));
 960     memset(dev, 0, sizeof(gfxdevice_t));
 961
 962     dev->name = "record";
 963
 964     dev->internal = i;
 965
 966     i->use_tempfile = use_tempfile;
 967     if(!use_tempfile) {
 968         writer_init_growingmemwriter(&i->w, 1048576);
 969     } else {
 970         char buffer[128];
 971         i->filename = strdup(mktempname(buffer, "gfx"));
 972         writer_init_filewriter2(&i->w, i->filename);
 973     }
 974     i->fontlist = gfxfontlist_create();
 975     i->cliplevel = 0;
 976
 977     dev->setparameter = record_setparameter;
 978     dev->startpage = record_startpage;
 979     dev->startclip = record_startclip;
 980     dev->endclip = record_endclip;
 981     dev->stroke = record_stroke;
 982     dev->fill = record_fill;
 983     dev->fillbitmap = record_fillbitmap;
 984     dev->fillgradient = record_fillgradient;
 985     dev->addfont = record_addfont;
 986     dev->drawchar = record_drawchar;
 987     dev->drawlink = record_drawlink;
 988     dev->endpage = record_endpage;
 989     dev->finish = record_finish;
 990 }
 991