lib/swf/swf.c

   1 #include "../gfxdevice.h"
   2 #include "../gfxsource.h"
   3 #include "../gfxtools.h"
   4 #include "../log.h"
   5 #include "../mem.h"
   6 #include "../rfxswf.h"
   7 #include "swf.h"
   8
   9 typedef struct _map16_t
  10 {
  11     void** ids;
  12 } map16_t;
  13
  14 typedef struct _swf_page_internal
  15 {
  16     int frame;
  17 } swf_page_internal_t;
  18
  19 typedef struct _swf_doc_internal
  20 {
  21     map16_t*id2char;
  22     int clips;
  23     SWF swf;
  24     int width,height;
  25     MATRIX m;
  26 } swf_doc_internal_t;
  27
  28 #define TYPE_SHAPE 1
  29 #define TYPE_BITMAP 2
  30 #define TYPE_SPRITE 3
  31 #define TYPE_FONT 4
  32 #define TYPE_TEXT 5
  33
  34 typedef struct _character
  35 {
  36     U16 id;
  37     TAG*tag;
  38     char type;
  39     void*data;
  40 } character_t;
  41
  42 typedef struct _placement
  43 {
  44     SWFPLACEOBJECT po;
  45     int age;
  46     int startFrame;
  47 } placement_t;
  48
  49 typedef struct _sprite
  50 {
  51     int frameCount;
  52 } sprite_t;
  53
  54 static void placement_free(placement_t*p)
  55 {
  56     swf_PlaceObjectFree(&p->po);
  57     free(p);
  58 }
  59
  60 //---- object/depth handling ----
  61
  62 map16_t* map16_new()
  63 {
  64     map16_t*map = rfx_calloc(sizeof(map16_t));
  65     /* TODO: replace this by a more sophisticated data structure */
  66     map->ids = (void**)rfx_calloc(sizeof(character_t)*65536);
  67     return map;
  68 }
  69 character_t*map16_get_id(map16_t*map, int id)
  70 {
  71     if(id<0 || id>=65536)
  72         return 0;
  73     return map->ids[id];
  74 }
  75 void map16_free(map16_t*map)
  76 {
  77     free(map->ids);
  78 }
  79 void map16_add_id(map16_t*map, int nr, void*id)
  80 {
  81     if(map->ids[nr])
  82         fprintf(stderr, "Warning: ID %d defined more than once\n");
  83     map->ids[nr] = id;
  84 }
  85 void map16_remove_id(map16_t*map, int nr)
  86 {
  87     map->ids[nr] = 0;
  88 }
  89 void map16_enumerate(map16_t*map, void (*f)(void*self, int id, void*data), void*self)
  90 {
  91     int t;
  92     for(t=0;t<65536;t++) {
  93         if(map->ids[t]) {
  94             f(self, t, map->ids[t]);
  95         }
  96     }
  97 }
  98
  99 //---- bitmap handling ----
 100
 101 typedef struct _bitmap
 102 {
 103     int width, height;
 104     RGBA*data;
 105 } bitmap_t;
 106
 107 bitmap_t* bitmap_new(RGBA*data, int width, int height)
 108 {
 109     bitmap_t* b = (bitmap_t*)rfx_calloc(sizeof(bitmap_t));
 110     b->data = data;
 111     b->width = width;
 112     b->height = height;
 113     return b;
 114 }
 115
 116 void bitmap_free(bitmap_t*b)
 117 {
 118     free(b->data); //!
 119     b->data = 0;
 120     free(b);
 121 }
 122
 123 //---- handling ----
 124
 125 static map16_t* extractDefinitions(SWF*swf)
 126 {
 127     map16_t*map = map16_new();
 128     TAG*tag = swf->firstTag;
 129     while(tag)
 130     {
 131         int id = 0;
 132         if(swf_isDefiningTag(tag)) {
 133             id = swf_GetDefineID(tag);
 134         }
 135
 136         if(tag->id == ST_DEFINESPRITE) {
 137             character_t*c = rfx_calloc(sizeof(character_t));
 138             sprite_t*s = rfx_calloc(sizeof(sprite_t));
 139             swf_SetTagPos(tag, 0);
 140             swf_GetU16(tag); //id
 141             s->frameCount = swf_GetU16(tag); //frameno
 142             c->tag = tag;
 143             c->type = TYPE_SPRITE;
 144             c->data = s;
 145             map16_add_id(map, id, c);
 146         }
 147         else if(tag->id == ST_DEFINESHAPE ||
 148                 tag->id == ST_DEFINESHAPE2 ||
 149                 tag->id == ST_DEFINESHAPE3) {
 150             character_t*c = rfx_calloc(sizeof(character_t));
 151             c->tag = tag;
 152             c->type = TYPE_SHAPE;
 153             map16_add_id(map, id, c);
 154         }
 155         else if(tag->id == ST_DEFINEFONT ||
 156                 tag->id == ST_DEFINEFONT2) {
 157             character_t*c = rfx_calloc(sizeof(character_t));
 158             SWFFONT*font = 0;
 159             swf_FontExtract(swf, id, &font);
 160             c->tag = tag;
 161             c->type = TYPE_FONT;
 162             c->data = font;
 163             map16_add_id(map, id, c);
 164         }
 165         else if(tag->id == ST_DEFINEBITSJPEG ||
 166                 tag->id == ST_DEFINEBITSJPEG2 ||
 167                 tag->id == ST_DEFINEBITSJPEG3 ||
 168                 tag->id == ST_DEFINEBITSLOSSLESS ||
 169                 tag->id == ST_DEFINEBITSLOSSLESS2) {
 170             character_t*c = rfx_calloc(sizeof(character_t));
 171             int width, height;
 172             void*data = swf_ExtractImage(tag, &width, &height);
 173             bitmap_t*b = bitmap_new(data, width, height);
 174             c->tag = tag;
 175             c->type = TYPE_BITMAP;
 176             c->data = b;
 177             map16_add_id(map, id, c);
 178         }
 179
 180         tag = tag->next;
 181     }
 182     return map;
 183 }
 184
 185 void swf_FreeTaglist(TAG*tag)
 186 {
 187     while(tag)
 188     {
 189         TAG * tnew = tag->next;
 190         if (tag->data)
 191             rfx_free(tag->data);
 192         rfx_free(tag);
 193         tag = tnew;
 194     }
 195 }
 196
 197 static void increaseAge(void*self, int id, void*data)
 198 {
 199     placement_t*p = (placement_t*)data;
 200     p->age++;
 201 }
 202
 203 static map16_t* extractFrame(TAG*startTag, int frame_to_extract)
 204 {
 205     map16_t*depthmap = map16_new();
 206     TAG*tag = startTag;
 207     int frame = 1;
 208     int insprite = 0;
 209     for(;tag;tag = tag->next) {
 210         if(tag->id == ST_END)
 211             break;
 212         if(tag->id == ST_DEFINESPRITE) {
 213             while(tag->id != ST_END)
 214                 tag = tag->next;
 215             continue;
 216         }
 217         if(tag->id == ST_PLACEOBJECT ||
 218            tag->id == ST_PLACEOBJECT2) {
 219             placement_t* p = rfx_calloc(sizeof(placement_t));
 220             p->age = 1;
 221             p->startFrame = frame;
 222             swf_GetPlaceObject(tag, &p->po);
 223             if(p->po.move) {
 224                 placement_t*old = (placement_t*)map16_get_id(depthmap, p->po.depth);
 225                 p->po.id = old->po.id;
 226                 map16_remove_id(depthmap, p->po.depth);
 227                 placement_free(p);
 228             } else {
 229                 map16_add_id(depthmap, p->po.depth, p);
 230             }
 231         }
 232         if(tag->id == ST_REMOVEOBJECT ||
 233            tag->id == ST_REMOVEOBJECT2) {
 234             U16 depth = swf_GetDepth(tag);
 235             map16_remove_id(depthmap, depth);
 236         }
 237         if(tag->id == ST_SHOWFRAME || tag->id == ST_END) {
 238             if(frame == frame_to_extract) {
 239                 return depthmap;
 240             }
 241             if(tag->id == ST_SHOWFRAME) {
 242                 frame++;
 243                 map16_enumerate(depthmap, increaseAge, 0);
 244             }
 245         }
 246     }
 247     fprintf(stderr, "gfxsource_swf: frame %d not found\n", frame_to_extract);
 248     return depthmap;
 249 }
 250
 251 // ---- render handling ----
 252
 253 typedef struct _render
 254 {
 255     map16_t*id2char;
 256     gfxdevice_t*device;
 257     MATRIX m;
 258     int clips;
 259 } render_t;
 260
 261 static void stopClippings(int from, render_t*r)
 262 {
 263     int t;
 264     for(t=from;t<r->clips;t++)
 265         r->device->endclip(r->device);
 266     r->clips = from;
 267 }
 268
 269 gfxline_t* swfline_to_gfxline(SHAPELINE*line, int linestyle, int fillstyle0)
 270 {
 271     gfxdrawer_t d;
 272     SCOORD x=0,y=0;
 273     gfxline_t*l;
 274     gfxdrawer_target_gfxline(&d);
 275     if(line->type != moveTo) {
 276         fprintf(stderr, "Warning: Shape doesn't start with a moveTo\n");
 277     }
 278     while(line) {
 279         if(line->fillstyle0 == fillstyle0 || line->fillstyle1 == fillstyle0 ||
 280            line->linestyle == linestyle) {
 281             if(line->type == lineTo) {
 282                 d.moveTo(&d, x/20.0,y/20.0);
 283                 d.lineTo(&d, line->x/20.0,line->y/20.0);
 284             } else if(line->type == splineTo) {
 285                 d.moveTo(&d, x/20.0,y/20.0);
 286                 d.splineTo(&d, line->sx/20.0, line->sy/20.0, line->x/20.0,line->y/20.0);
 287             }
 288         }
 289         x = line->x;
 290         y = line->y;
 291         line = line->next;
 292     }
 293     l = d.result(&d);
 294     return l;
 295 }
 296
 297 void swf_ShapeApplyMatrix(SHAPE2*shape, MATRIX*m)
 298 {
 299 }
 300
 301 static void convertMatrix(MATRIX*from, gfxmatrix_t*to)
 302 {
 303     to->m00 = from->sx / 65536.0; to->m10 = from->r1 / 65536.0;
 304     to->m01 = from->r0 / 65536.0; to->m11 = from->sy / 65536.0;
 305     to->tx = from->tx/20.0;
 306     to->ty = from->ty/20.0;
 307 }
 308
 309 static void convertCXForm(CXFORM*from, gfxcxform_t*to)
 310 {
 311     memset(to, 0, sizeof(gfxcxform_t));
 312     to->aa = from->a0 / 256.0;
 313     to->rr = from->r0 / 256.0;
 314     to->gg = from->g0 / 256.0;
 315     to->bb = from->b0 / 256.0;
 316     to->ta = from->a1;
 317     to->tr = from->r1;
 318     to->tg = from->g1;
 319     to->tb = from->b1;
 320 }
 321
 322 static gfxgradient_t* convertGradient(GRADIENT*from)
 323 {
 324     gfxgradient_t*g = rfx_calloc(from->num * sizeof(gfxgradient_t));
 325     int t;
 326     for(t=0;t<from->num;t++) {
 327         g[t].pos = from->ratios[t] / 255.0;
 328         g[t].color = *(gfxcolor_t*)&from->rgba[t];
 329         if(t<from->num-1)
 330             g[t].next = &g[t+1];
 331         else
 332             g[t].next = 0;
 333     }
 334     return g;
 335 }
 336
 337 gfximage_t* findimage(render_t*r)
 338 {
 339     return 0;
 340 }
 341
 342 static void renderFilled(render_t*r, gfxline_t*line, FILLSTYLE*f, CXFORM*cx)
 343 {
 344     if(f->type == FILL_SOLID) {
 345         gfxcolor_t c = *(gfxcolor_t*)&f->color;
 346         r->device->fill(r->device, line, &c);
 347     } else if(f->type == FILL_TILED || f->type == FILL_CLIPPED) {
 348         gfximage_t* img = findimage(r);
 349         gfxmatrix_t m;
 350         gfxcxform_t gfxcx;
 351         convertCXForm(cx, &gfxcx);
 352         convertMatrix(&f->m, &m);
 353         /* TODO: handle clipped */
 354         r->device->fillbitmap(r->device, line, img, &m, &gfxcx);
 355     } else if(f->type == FILL_LINEAR || f->type == FILL_RADIAL) {
 356         gfxmatrix_t m;
 357         gfxgradient_t* g;
 358         convertMatrix(&f->m, &m);
 359         g = convertGradient(&f->gradient);
 360         r->device->fillgradient(r->device, line, g, f->type == FILL_LINEAR ? gfxgradient_linear : gfxgradient_radial, &m);
 361         free(g);
 362     }
 363 }
 364
 365 RGBA swf_ColorTransform(RGBA*color, CXFORM*cx)
 366 {
 367     RGBA dest;
 368     dest.r = (cx->r0*color->r + cx->r1*256) >> 8;
 369     dest.g = (cx->g0*color->g + cx->g1*256) >> 8;
 370     dest.b = (cx->b0*color->b + cx->b1*256) >> 8;
 371     dest.a = (cx->a0*color->a + cx->a1*256) >> 8;
 372     return dest;
 373 }
 374
 375 void renderOutline(render_t*r, gfxline_t*line, LINESTYLE*l, CXFORM*cx)
 376 {
 377     RGBA c = swf_ColorTransform(&l->color, cx);
 378     gfxcoord_t width = l->width/20.0;
 379     r->device->stroke(r->device, line, width, (gfxcolor_t*)&c, gfx_capRound, gfx_joinRound, 0.0);
 380 }
 381
 382 void swf_ApplyMatrixToShape(SHAPE2*shape, MATRIX*m)
 383 {
 384     SHAPELINE*line = shape->lines;
 385     while(line) {
 386         SPOINT p;
 387         p.x = line->x; p.y = line->y;
 388         p = swf_TurnPoint(p, m);
 389         line->x = p.x; line->y = p.y;
 390         line = line->next;
 391     }
 392 }
 393
 394 static void renderCharacter(render_t*r, placement_t*p, character_t*c)
 395 {
 396     if(c->type == TYPE_SHAPE) {
 397         SHAPE2 shape;
 398         swf_ParseDefineShape(c->tag, &shape);
 399         MATRIX m;
 400         swf_MatrixJoin(&m, &r->m, &p->po.matrix);
 401         swf_ApplyMatrixToShape(&shape, &m);
 402         SHAPELINE*line = shape.lines;
 403         int t;
 404         for(t=1;t<=shape.numfillstyles;t++) {
 405            gfxline_t*line;
 406            line = swfline_to_gfxline(shape.lines, -1, t);
 407            if(line) {
 408                if(!p->po.clipdepth) {
 409                    renderFilled(r, line, &shape.fillstyles[t-1], &p->po.cxform);
 410                } else {
 411                    r->device->startclip(r->device, line);
 412                    r->clips++;
 413                }
 414            }
 415            gfxline_free(line);
 416            /*line = swfline_to_gfxline(shape.lines, -1, -1, t);
 417            if(line) renderFilled(r, line, &shape.fillstyles[t-1], &p->po.cxform);
 418            gfxline_free(line);*/
 419         }
 420         for(t=1;t<=shape.numlinestyles;t++) {
 421            gfxline_t*line = swfline_to_gfxline(shape.lines, t, -1);
 422            if(line) renderOutline(r, line, &shape.linestyles[t-1], &p->po.cxform);
 423            gfxline_free(line);
 424         }
 425     }
 426 }
 427
 428 // ---- main ----
 429
 430 static void placeObject(void*self, int id, void*data)
 431 {
 432     render_t*r = (render_t*)self;
 433     placement_t*p = (placement_t*)data;
 434     character_t*c = map16_get_id(r->id2char, p->po.id);
 435     if(!c)  {
 436         fprintf(stderr, "Error: ID %d unknown\n", p->po.id);
 437     }
 438     if(c->type == TYPE_SPRITE) {
 439         int oldclip = r->clips;
 440         sprite_t* s = (sprite_t*)c->data;
 441         map16_t* depths = extractFrame(c->tag, p->age % s->frameCount);
 442         map16_enumerate(depths, placeObject, r);
 443         stopClippings(oldclip, r);
 444         return;
 445     }
 446     renderCharacter(r, p, c);
 447 }
 448
 449 void swfpage_destroy(gfxpage_t*swf_page)
 450 {
 451     swf_page_internal_t*i= (swf_page_internal_t*)swf_page->internal;
 452     free(swf_page->internal);swf_page->internal = 0;
 453     free(swf_page);swf_page=0;
 454 }
 455
 456 void swfpage_render(gfxpage_t*page, gfxdevice_t*output)
 457 {
 458     swf_page_internal_t*i = (swf_page_internal_t*)page->internal;
 459     swf_doc_internal_t*pi = (swf_doc_internal_t*)page->parent->internal;
 460     map16_t* depths = extractFrame(pi->swf.firstTag, i->frame);
 461     render_t r;
 462     r.id2char = pi->id2char;
 463     r.clips = 0;
 464     r.device = output;
 465     r.m = pi->m;
 466     map16_enumerate(depths, placeObject, &r);
 467 }
 468
 469 void swfpage_rendersection(gfxpage_t*page, gfxdevice_t*output, gfxcoord_t x, gfxcoord_t y, gfxcoord_t _x1, gfxcoord_t _y1, gfxcoord_t _x2, gfxcoord_t _y2)
 470 {
 471     swf_doc_internal_t*pi = (swf_doc_internal_t*)page->parent->internal;
 472     /* FIXME */
 473     swfpage_render(page,output);
 474 }
 475
 476 void swf_doc_destroy(gfxdocument_t*gfx)
 477 {
 478     swf_doc_internal_t*i= (swf_doc_internal_t*)gfx->internal;
 479     swf_FreeTags(&i->swf);
 480     free(gfx->internal);gfx->internal=0;
 481     free(gfx);gfx=0;
 482 }
 483
 484 void swf_doc_set_parameter(gfxdocument_t*gfx, char*name, char*value)
 485 {
 486     swf_doc_internal_t*i= (swf_doc_internal_t*)gfx->internal;
 487 }
 488
 489 gfxpage_t* swf_doc_getpage(gfxdocument_t*doc, int page)
 490 {
 491     swf_doc_internal_t*di= (swf_doc_internal_t*)doc->internal;
 492     if(page < 1 || page > doc->num_pages)
 493         return 0;
 494
 495     gfxpage_t* swf_page = (gfxpage_t*)malloc(sizeof(gfxpage_t));
 496     swf_page_internal_t*pi= (swf_page_internal_t*)malloc(sizeof(swf_page_internal_t));
 497     memset(pi, 0, sizeof(swf_page_internal_t));
 498
 499     pi->frame = page;
 500
 501     swf_page->internal = pi;
 502     swf_page->destroy = swfpage_destroy;
 503     swf_page->render = swfpage_render;
 504     swf_page->rendersection = swfpage_rendersection;
 505     swf_page->width = di->width;
 506     swf_page->height = di->height;
 507     swf_page->parent = doc;
 508     swf_page->nr = page;
 509     return swf_page;
 510 }
 511
 512 void swf_set_parameter(char*name, char*value)
 513 {
 514     msg("<verbose> setting parameter %s to \"%s\"", name, value);
 515 }
 516
 517 gfxdocument_t*swf_open(char*filename)
 518 {
 519     gfxdocument_t*swf_doc = (gfxdocument_t*)malloc(sizeof(gfxdocument_t));
 520     memset(swf_doc, 0, sizeof(gfxdocument_t));
 521     swf_doc_internal_t*i= (swf_doc_internal_t*)malloc(sizeof(swf_doc_internal_t));
 522     memset(i, 0, sizeof(swf_doc_internal_t));
 523
 524     TAG*tag = 0;
 525     int f;
 526     int frame;
 527     render_t r;
 528     gfxdevice_t d;
 529
 530     if(!filename) {
 531         return 0;
 532     }
 533     f = open(filename,O_RDONLY|O_BINARY);
 534     if (f<0) {
 535         perror("Couldn't open file: ");
 536         return 0;
 537     }
 538     if FAILED(swf_ReadSWF(f,&i->swf)) {
 539         fprintf(stderr, "%s is not a valid SWF file or contains errors.\n",filename);
 540         close(f);
 541         return 0;
 542     }
 543     swf_UnFoldAll(&i->swf);
 544
 545     i->id2char = extractDefinitions(&i->swf);
 546     i->width = (i->swf.movieSize.xmax - i->swf.movieSize.xmin) / 20;
 547     i->height = (i->swf.movieSize.ymax - i->swf.movieSize.ymin) / 20;
 548
 549     swf_GetMatrix(0, &i->m);
 550     i->m.tx = -i->swf.movieSize.xmin;
 551     i->m.ty = -i->swf.movieSize.ymin;
 552
 553     swf_doc->num_pages = i->swf.frameCount;
 554     swf_doc->internal = i;
 555     swf_doc->get = 0;
 556     swf_doc->destroy = swf_doc_destroy;
 557     swf_doc->set_parameter = swf_doc_set_parameter;
 558     swf_doc->getpage = swf_doc_getpage;
 559
 560     return swf_doc;
 561 }
 562
 563 gfxsource_t*gfxsource_swf_create()
 564 {
 565     gfxsource_t*src = (gfxsource_t*)malloc(sizeof(gfxsource_t));
 566     memset(src, 0, sizeof(gfxsource_t));
 567     src->set_parameter = swf_set_parameter;
 568     src->open = swf_open;
 569     return src;
 570 }