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