src/combine.c

   1 /* combine.c
   2    Implements combine(), which merges two swfs in memory.
   3
   4    Part of the swftools package.
   5
   6    Copyright (c) 2001 Matthias Kramm <kramm@quiss.org>
   7
   8    This file is distributed under the GPL, see file COPYING for details */
   9
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <memory.h>
  14 #include "../lib/log.h"
  15 #include "../lib/rfxswf.h"
  16 #include "./flash.h"
  17 #include "./reloc.h"
  18 #include "./settings.h"
  19
  20 static char* slavename = 0;
  21 static int slaveid = -1;
  22 static int slaveframe = -1;
  23
  24 static char* tag_placeobject2_name (struct swf_tag* tag)
  25 {
  26     struct PlaceObject2 plo2;
  27     placeobject2_init (&plo2, tag);
  28     return plo2.name;
  29 }
  30
  31 static u16 tag_placeobject2_character (struct swf_tag* tag)
  32 {
  33     struct PlaceObject2 plo2;
  34     placeobject2_init (&plo2, tag);
  35     return plo2.id;
  36 }
  37
  38 static struct swffile master;
  39 static struct swffile slave;
  40
  41 static int masterids[65536];
  42
  43 static int get_free_id()
  44 {
  45     int t;
  46     for (t=1;t<65536;t++)
  47     {
  48         if(masterids[t] == -1)
  49         {
  50             masterids[t] = 1;
  51             return t;
  52         }
  53     }
  54     return -1;
  55 }
  56
  57 void changedepth(struct swf_tag*tag, int add)
  58 {
  59     /* fucking big endian byte order */
  60     if(tag->id == TAGID_PLACEOBJECT)
  61         PUT16(&tag->data[2],GET16(&tag->data[2])+add);
  62     if(tag->id == TAGID_PLACEOBJECT2)
  63         PUT16(&tag->data[1],GET16(&tag->data[1])+add);
  64     if(tag->id == TAGID_REMOVEOBJECT)
  65         PUT16(&tag->data[2],GET16(&tag->data[2])+add);
  66     if(tag->id == TAGID_REMOVEOBJECT2)
  67         PUT16(&tag->data[0],GET16(&tag->data[0])+add);
  68 }
  69
  70 void jpeg_assert()
  71 {
  72     /* TODO: if there's a jpegtable found, store it
  73        and handle it together with the flash file
  74        headers */
  75     /* check that master and slave don't have both
  76        jpegtables (which would be fatal) */
  77     int pos;
  78     int mpos=-1, spos=-1;
  79     pos = 0;
  80     while(master.tags[pos].id != 0)
  81     {
  82         if(master.tags[pos].id == TAGID_JPEGTABLES)
  83             mpos = pos;
  84         pos++;
  85     }
  86     pos = 0;
  87     while(master.tags[pos].id != 0)
  88     {
  89         if(slave.tags[pos].id == TAGID_JPEGTABLES)
  90             spos = pos;
  91         pos++;
  92     }
  93     if(spos>=0 && mpos>=0)
  94     {
  95         if(slave.tags[pos].length ==
  96            master.tags[pos].length &&
  97         !memcmp(slave.tags[pos].data, master.tags[pos].data,
  98             master.tags[pos].length))
  99         {
 100             // ok, both have jpegtables, but they're identical.
 101             // delete one and don't make an error
 102             for(;spos<slave.tagnum-1;spos++)
 103                 slave.tags[spos] =
 104                     slave.tags[spos+1];
 105             spos = -1;
 106         }
 107     }
 108     if(spos>=0 && mpos>=0) {
 109         logf("<error> Master and slave have incompatible JPEGTABLES.");
 110     }
 111 }
 112
 113 /* applies the config move and scale parameters to
 114  * a matrix. (If settings would provide a rotation,
 115  * this would be a matrix concatenation/multiplication
 116  * routine. In this case, it's just element-wise multiplication.
 117  */
 118 void matrix_adjust(struct MATRIX*m)
 119 {
 120     if(config.scalex != 1 || config.scaley != 1)
 121     {
 122         if(!m->hasscale) {
 123             m->hasscale = 1;
 124             m->a[0][0] = config.scalex;
 125             m->a[1][1] = config.scaley;
 126         } else {
 127             m->a[0][0] *= config.scalex;
 128             m->a[1][1] *= config.scaley;
 129         }
 130         if(m->hasrotate) {
 131             m->a[0][1] *= config.scalex;
 132             m->a[1][0] *= config.scaley;
 133         }
 134         m->b[0] *= config.scalex;
 135         m->b[1] *= config.scaley;
 136     }
 137 /*    printf("hasscale: %d\n",m->hasscale);
 138     printf("hasrotate: %d\n", m->hasrotate);
 139     printf("move: %d %d\n", m->b[0],m->b[1]);
 140     printf("rot: %f %f\n",m->a[0][0],m->a[0][1]);
 141     printf("     %f %f\n",m->a[1][0],m->a[1][1]);*/
 142     m->b[0] += config.movex;
 143     m->b[1] += config.movey;
 144 }
 145
 146 void write_changepos(struct swf_tag*tag, struct writer_t*w)
 147 {
 148     if(config.movex || config.movey || config.scalex != 1 || config.scaley != 1)
 149     {
 150         switch(tag->id)
 151         {
 152             case TAGID_PLACEOBJECT: {
 153                 struct PlaceObject p;
 154                 placeobject_init(&p, tag);
 155                 matrix_adjust(&p.matrix);
 156                 placeobject_write(&p, w);
 157                 break;
 158             }
 159             case TAGID_PLACEOBJECT2: {
 160                 struct PlaceObject2 p;
 161                 placeobject2_init(&p, tag);
 162                 if(!p.hasmatrix) {
 163                     p.hasmatrix = 1;
 164                     MATRIX_init(&p.matrix);
 165                 }
 166                 matrix_adjust(&p.matrix);
 167                 placeobject2_write(&p, w);
 168                 break;
 169             }
 170             default:
 171             writer_write(w, tag->fulldata, tag->fulllength);
 172         }
 173     }
 174     else
 175     {
 176             writer_write(w, tag->fulldata, tag->fulllength);
 177     }
 178 }
 179
 180 void write_sprite_defines(struct writer_t*w)
 181 {
 182     int pos = 0;
 183     while(slave.tags[pos].id != 0) {
 184         struct swf_tag * tag = &slave.tags[pos];
 185         if(!is_sprite_tag(tag->id)) {
 186             logf("<debug> processing sprite tag %02x", slave.tags[pos].id);
 187             if(is_defining_tag(tag->id))
 188             {
 189                 logf("<debug> [sprite defs] write tag %02x (%d bytes in body)",
 190                         tag->id, tag->length);
 191                 writer_write(w, tag->fulldata, tag->fulllength);
 192             }
 193             else
 194             {
 195                 switch(tag->id)
 196                 {case TAGID_DEFINEFONTINFO:
 197                     {
 198                         /* define font info is not a defining tag, in that
 199                          * it doesn't define a new id, but rather extends
 200                          * an existing one. It also isn't a sprite tag.
 201                          * Anyway we can't throw it out, so we just pass it
 202                          * through.
 203                          */
 204                         writer_write(w, tag->fulldata, tag->fulllength);
 205                         break;
 206                     }
 207                  case TAGID_JPEGTABLES:
 208                         /* if we get here, jpeg_assert has already run,
 209                            ensuring this is the only one of it's kind,
 210                            so we may safely write it out */
 211                         writer_write(w, tag->fulldata, tag->fulllength);
 212                     break;
 213                  case TAGID_EXPORTASSETS:
 214                     logf("<debug> deliberately ignoring EXPORTASSETS tag");
 215                     break;
 216                  case TAGID_ENABLEDEBUGGER:
 217                     logf("<debug> deliberately ignoring ENABLEDEBUGGER tag");
 218                     break;
 219                  case TAGID_BACKGROUNDCOLOR:
 220                     logf("<debug> deliberately ignoring BACKGROUNDCOLOR tag");
 221                     break;
 222                  case 40:
 223                  case 49:
 224                  case 51:
 225                     logf("<notice> found tag %d. This is a Generator template, isn't it?", slave.tags[pos].id);
 226                     break;
 227                  default:
 228                     logf("<notice> funny tag: %d is neither defining nor sprite", slave.tags[pos].id);
 229                 }
 230             }
 231         }
 232         pos++;
 233     }
 234 }
 235
 236 void write_sprite(struct writer_t*w, int spriteid, int replaceddefine)
 237 {
 238     u16 tmp;
 239     u32 tmp32;
 240     u32*tagidpos;
 241     u8*startpos;
 242     int pos = 0;
 243     // write slave(2) (header)
 244     tmp = SWAP16(0x3f + (TAGID_DEFINESPRITE << 6));
 245     writer_write(w, &tmp, 2);
 246     tagidpos = (u32*)writer_getpos(w);
 247     writer_write(w, &tmp32, 4);
 248
 249     startpos = (u8*)writer_getpos(w);
 250
 251     logf ("<notice> sprite id is %d", spriteid);
 252     tmp = SWAP16(spriteid);
 253     writer_write(w, &tmp, 2);
 254     tmp = SWAP16(slave.header.count);
 255     writer_write(w, &tmp, 2);
 256
 257
 258     // write slave(2) (body)
 259     tmp = slave.header.count;
 260     logf("<debug> %d frames to go",tmp);
 261
 262     if(config.clip) {
 263         tmp = SWAP16(7 + (TAGID_PLACEOBJECT2 << 6));
 264         writer_write(w, &tmp, 2);
 265         tmp = SWAP16(2+64); //flags: character + clipaction
 266         writer_write(w, &tmp, 1);
 267         tmp = SWAP16(0); //depth
 268         writer_write(w, &tmp,2);
 269         tmp = SWAP16(replaceddefine); //id
 270         writer_write(w, &tmp,2);
 271         tmp = SWAP16(65535); //clipdepth
 272         writer_write(w, &tmp,2);
 273     }
 274
 275     if(config.overlay && !config.isframe) {
 276         tmp = SWAP16(5 + (TAGID_PLACEOBJECT2 << 6));
 277         writer_write(w, &tmp, 2);
 278         tmp = SWAP16(2); //flags: character
 279         writer_write(w, &tmp, 1);
 280         tmp = SWAP16(0); //depth
 281         writer_write(w, &tmp,2);
 282         tmp = SWAP16(replaceddefine); //id
 283         writer_write(w, &tmp,2);
 284     }
 285
 286     do {
 287         struct swf_tag * tag = &slave.tags[pos];
 288         if (is_sprite_tag(tag->id)) {
 289
 290             changedepth(tag, +1);
 291             logf("<debug> [sprite main] write tag %02x (%d bytes in body)",
 292                     slave.tags[pos].id, slave.tags[pos].length);
 293             write_changepos(tag, w);
 294
 295             if(tag->id == TAGID_SHOWFRAME)
 296             {
 297                 tmp--;
 298                 logf("<debug> %d frames to go",tmp);
 299             }
 300         }
 301     }
 302     while(slave.tags[pos++].id != TAGID_END);
 303
 304     PUT32(tagidpos, (u8*)writer_getpos(w) - startpos); // set length of sprite (in header)
 305     logf("<verbose> sprite length is %d",GET32(tagidpos));
 306 }
 307
 308 static char tag_ok_for_slave(int id)
 309 {
 310     if(id == TAGID_BACKGROUNDCOLOR)
 311         return 0;
 312     return 1;
 313 }
 314
 315 #define FLAGS_WRITEDEFINES 1
 316 #define FLAGS_WRITENONDEFINES 2
 317 #define FLAGS_WRITESPRITE 4
 318 #define FLAGS_WRITESLAVE 8
 319 void write_master(struct writer_t*w, int spriteid, int replaceddefine, int flags)
 320 {
 321     int pos = 0;
 322     int spos = 0;
 323     int outputslave = 0;
 324     int frame = 0;
 325     int sframe = 0;
 326     int slavewritten = 0;
 327     while(master.tags[pos].id != 0)
 328     {
 329         if(master.tags[pos].id == TAGID_SHOWFRAME && outputslave)
 330         {
 331             while(slave.tags[spos].id) {
 332                 if(slave.tags[spos].id == TAGID_SHOWFRAME) {
 333                     spos++;
 334                     sframe++;
 335                     break;
 336                 }
 337                 if(tag_ok_for_slave(slave.tags[spos].id))
 338                     writer_write(w, slave.tags[spos].fulldata, slave.tags[spos].fulllength);
 339                 spos++;
 340             }
 341             frame ++;
 342         }
 343
 344         if(is_defining_tag(master.tags[pos].id) && (flags&FLAGS_WRITEDEFINES))
 345         {
 346             logf("<debug> [master] write tag %02x (%d bytes in body)",
 347                     master.tags[pos].id, master.tags[pos].length);
 348             if(getidfromtag(&master.tags[pos]) == spriteid && !config.isframe)
 349             {
 350                 if(config.overlay)
 351                 {
 352                     PUT16(master.tags[pos].data, replaceddefine);
 353                     writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
 354                 } else {
 355                     /* don't write this tag */
 356                     logf("<verbose> replacing tag %d id %d with sprite", master.tags[pos].id
 357                             ,spriteid);
 358                 }
 359
 360                 if(flags&FLAGS_WRITESPRITE)
 361                 {
 362                     write_sprite_defines(w);
 363                     write_sprite(w, spriteid, replaceddefine);
 364                 }
 365                 if(flags&FLAGS_WRITESLAVE)
 366                 {
 367                     outputslave = 1;
 368                 }
 369             } else {
 370                 writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
 371             }
 372         }
 373         if(frame == slaveframe)
 374         {
 375             if(flags&FLAGS_WRITESLAVE) {
 376                 outputslave = 1;
 377                 slavewritten = 1;
 378             }
 379             if((flags&FLAGS_WRITESPRITE) && !slavewritten)
 380             {
 381                 int id = get_free_id();
 382                 int depth = 0;
 383                 char data[7];
 384                 if(config.clip) {
 385                     logf("<fatal> Can't combine --clip and --frame");
 386                 }
 387                 PUT16(&data[0], (u16)(TAGID_PLACEOBJECT2<<6) + 5);
 388                 *(u8*)&data[2]= 2; //flags: id
 389                 PUT16(&data[3], depth);
 390                 PUT16(&data[5], id);
 391                 write_sprite_defines(w);
 392                 write_sprite(w, id, -1);
 393                 writer_write(w,data,7);
 394                 slavewritten = 1;
 395             }
 396         }
 397         if(!is_defining_tag(master.tags[pos].id) && (flags&FLAGS_WRITENONDEFINES))
 398         {
 399             int dontwrite = 0;
 400             switch(master.tags[pos].id) {
 401                 case TAGID_PLACEOBJECT:
 402                 case TAGID_PLACEOBJECT2:
 403                     if(frame == slaveframe && !config.overlay)
 404                         dontwrite = 1;
 405                 case TAGID_REMOVEOBJECT:
 406 //              case TAGID_REMOVEOBJECT2:
 407                     /* place/removetags for the object we replaced
 408                        should be discarded, too, as the object to insert
 409                        isn't a sprite
 410                      */
 411                     if(spriteid>=0 && getidfromtag(&master.tags[pos]) == spriteid &&
 412                             !config.isframe && config.merge)
 413                         dontwrite = 1;
 414                 break;
 415             }
 416             if(!dontwrite) {
 417                 logf("<debug> [master] write tag %02x (%d bytes in body)",
 418                         master.tags[pos].id, master.tags[pos].length);
 419                 writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
 420             }
 421         }
 422         pos++;
 423     }
 424
 425     if(outputslave)
 426     while(slave.tags[spos].id)
 427     {
 428             if(tag_ok_for_slave(slave.tags[spos].id))
 429                 writer_write(w, slave.tags[spos].fulldata, slave.tags[spos].fulllength);
 430             spos++;
 431     }
 432     if(!slavewritten && config.isframe && (flags&(FLAGS_WRITESLAVE|FLAGS_WRITESPRITE)))
 433     {
 434         logf("<warning> Frame %d doesn't exist in file. No substitution will occur",
 435                 slaveframe);
 436     }
 437     //write END tag:
 438     writer_write(w, master.tags[pos].fulldata, master.tags[pos].fulllength);
 439 }
 440
 441 void writeheader(struct writer_t*w, u8*data, int length)
 442 {
 443     if(config.hassizex || config.hassizey || config.framerate)
 444     {
 445         struct flash_header head;
 446         struct reader_t reader;
 447         swf_init(&reader, data-3, length+3);
 448         head = swf_read_header(&reader);
 449         if(config.hassizex)
 450         {
 451             head.boundingBox.x2 = head.boundingBox.x1 + config.sizex;
 452         }
 453         if(config.hassizey)
 454         {
 455             head.boundingBox.y2 = head.boundingBox.y1 + config.sizey;
 456         }
 457         if(config.framerate)
 458         {
 459             head.rate = config.framerate;
 460         }
 461         swf_write_header(w, &head);
 462     }
 463     else
 464     writer_write(w, data, length);
 465 }
 466
 467 uchar * catcombine(uchar*masterdata, int masterlength, char*_slavename, uchar*slavedata, int slavelength, int*newlength)
 468 {
 469         struct writer_t w;
 470         u32*headlength;
 471         u32 tmp32;
 472         int length = masterlength*2 + slavelength;
 473         int pos = 0;
 474         int t;
 475         char* depths;
 476         uchar*newdata = malloc(length);
 477         if(!newdata) {
 478             logf("<fatal> Couldn't allocate %d bytes of memory", length);
 479             return 0;
 480         }
 481         if(config.isframe) {
 482             logf("<fatal> Can't combine --cat and --frame");
 483             exit(1);
 484         }
 485         writer_init(&w, newdata, length);
 486
 487         do {
 488             int tag = master.tags[pos].id;
 489             if(is_defining_tag(tag)) {
 490                 int defineid = getidfromtag(&master.tags[pos]);
 491                 logf("<debug> tagid %02x defines object %d", tag, defineid);
 492                 masterids[defineid] = 1;
 493             }
 494         }
 495         while(master.tags[pos++].id != 0);
 496
 497         swf_relocate (slavedata, slavelength, masterids);
 498         read_swf(&slave, slavedata, slavelength);
 499         jpeg_assert();
 500
 501         writer_write(&w, "FWS",3);
 502         headlength = (u32*)(writer_getpos(&w) + 1);
 503         writeheader(&w, master.header.headerdata, master.header.headerlength);
 504
 505         depths = malloc(65536);
 506         if(!depths) {
 507             logf("<fatal> Couldn't allocate %d bytes of memory", 65536);
 508             return 0;
 509         }
 510         memset(depths, 0, 65536);
 511         pos = 0;
 512         do {
 513             int num=1;
 514             u16 depth;
 515             logf("<debug> [master] write tag %02x (%d bytes in body)",
 516                     master.tags[pos].id, master.tags[pos].length);
 517             switch(master.tags[pos].id) {
 518                 case TAGID_PLACEOBJECT2:
 519                     num++;
 520                 case TAGID_PLACEOBJECT: {
 521                    struct reader_t r;
 522                    reader_init (&r, master.tags[pos].data, master.tags[pos].length);
 523                    if(num>=2)
 524                         reader_readu8(&r);
 525                    depth = reader_readu16(&r);
 526                    depths[depth] = 1;
 527                 }
 528                 break;
 529                 case TAGID_REMOVEOBJECT: {
 530                    struct reader_t r;
 531                    reader_init (&r, master.tags[pos].data, master.tags[pos].length);
 532                    reader_readu16(&r);
 533                    depths[reader_readu16(&r)] = 0;
 534                 }
 535                 break;
 536                 case TAGID_REMOVEOBJECT2: {
 537                    struct reader_t r;
 538                    reader_init (&r, master.tags[pos].data, master.tags[pos].length);
 539                    depths[reader_readu16(&r)] = 0;
 540                 }
 541                 break;
 542             }
 543             if(master.tags[pos].id != 0)
 544                 writer_write(&w, master.tags[pos].fulldata, master.tags[pos].fulllength);
 545         }
 546         while(master.tags[pos++].id != 0);
 547
 548         for(t=0;t<65536;t++)
 549         if(depths[t])
 550         {
 551             char data[16];
 552             int len;
 553             PUT16(&data[0], (TAGID_REMOVEOBJECT2<<6) + 2);
 554             PUT16(&data[2], t);
 555             writer_write(&w, data, 4);
 556         }
 557         free(depths);
 558
 559         pos = 0;
 560         do {
 561             logf("<debug> [slave] write tag %02x (%d bytes in body)",
 562                     slave.tags[pos].id, slave.tags[pos].length);
 563             writer_write(&w, slave.tags[pos].fulldata, slave.tags[pos].fulllength);
 564         }
 565         while(slave.tags[pos++].id != 0);
 566
 567         tmp32 = (u8*)writer_getpos(&w) - (u8*)newdata; //length
 568         *newlength = tmp32;
 569         PUT32(headlength, tmp32); // set the header to the correct length
 570
 571         return newdata; //length
 572 }
 573
 574 uchar * normalcombine(uchar*masterdata, int masterlength, char*_slavename, uchar*slavedata, int slavelength, int*newlength)
 575 {
 576         int length;
 577         int pos=0;
 578         u32 tmp32;
 579         u32*headlength;
 580         uchar*newdata;
 581         int spriteid = -1;
 582         int replaceddefine = -1;
 583         struct writer_t w;
 584         int frame;
 585         char*framelabel;
 586
 587         length = masterlength + slavelength*2 + 128; // this is a guess, but a good guess.
 588         newdata = malloc(length);
 589         writer_init(&w, newdata, length);
 590
 591         if(!newdata) {
 592             logf("<fatal> Couldn't allocate %d bytes of memory", length);
 593             return 0;
 594         }
 595
 596         // set the idtab
 597         pos = 0;
 598         do {
 599             int tag = master.tags[pos].id;
 600             if(is_defining_tag(tag)) {
 601                 int defineid = getidfromtag(&master.tags[pos]);
 602                 logf("<debug> tagid %02x defines object %d", tag, defineid);
 603                 masterids[defineid] = 1;
 604             } else if(tag == TAGID_PLACEOBJECT2) {
 605                 char * name = tag_placeobject2_name(&master.tags[pos]);
 606                 int id = tag_placeobject2_character(&master.tags[pos]);
 607
 608                 if(name)
 609                   logf("<verbose> tagid %02x places object %d named \"%s\"", tag, id, name);
 610                 else
 611                   logf("<verbose> tagid %02x places object %d (no name)", tag, id);
 612
 613                 if ((name && slavename && !strcmp(name,slavename)) ||
 614                     (!slavename && id==slaveid)) {
 615                     if(id>=0) {
 616                       spriteid = id;
 617                       logf("<notice> Slave file attached to object %d.", id);
 618                     }
 619                 }
 620             } else if(tag == TAGID_SHOWFRAME) {
 621                 if(slaveframe>=0 && frame==slaveframe) {
 622                     logf("<notice> Slave file attached to frame %d.", frame);
 623                 }
 624                 frame++;
 625             } else if(tag == TAGID_FRAMELABEL) {
 626                 char * name = master.tags[pos].data;
 627                 if(name && slavename && config.isframe && !strcmp(name, slavename)) {
 628                     slaveframe = frame;
 629                     logf("<notice> Slave file attached to frame %d (%s).", frame, name);
 630                 }
 631             }
 632         }
 633         while(master.tags[pos++].id != 0);
 634
 635         if (spriteid<0 && !config.isframe) {
 636             if(slavename) {
 637                 if(strcmp(slavename,"!!dummy!!"))
 638                     logf("<warning> Didn't find anything named %s in file. No substitutions will occur.", slavename);
 639             }
 640             else
 641                 logf("<warning> Didn't find id %d in file. No substitutions will occur.", slaveid);
 642             spriteid = get_free_id();
 643         }
 644
 645         swf_relocate (slavedata, slavelength, masterids);
 646         read_swf(&slave, slavedata, slavelength);
 647         jpeg_assert();
 648
 649         if (config.overlay)
 650             replaceddefine = get_free_id();
 651
 652         // write file
 653
 654         writer_write(&w, "FWS",3);
 655         headlength = (u32*)(writer_getpos(&w) + 1);
 656         writeheader(&w, master.header.headerdata, master.header.headerlength);
 657
 658         if (config.antistream) {
 659             if (config.merge) {
 660                 logf("<fatal> Can't combine --antistream and --merge");
 661             }
 662             write_sprite_defines(&w);
 663             write_sprite(&w, spriteid, replaceddefine);
 664             write_master(&w, spriteid, replaceddefine, FLAGS_WRITEDEFINES);
 665             write_master(&w, spriteid, replaceddefine, FLAGS_WRITENONDEFINES);
 666         } else {
 667             if (config.merge)
 668                 write_master(&w, spriteid, replaceddefine,
 669                     FLAGS_WRITEDEFINES|FLAGS_WRITENONDEFINES|FLAGS_WRITESLAVE);
 670             else
 671                 write_master(&w, spriteid, replaceddefine,
 672                     FLAGS_WRITEDEFINES|FLAGS_WRITENONDEFINES|FLAGS_WRITESPRITE);
 673         }
 674
 675         tmp32 = (u8*)writer_getpos(&w) - (u8*)newdata; //length
 676         *newlength = tmp32;
 677         PUT32(headlength, tmp32);
 678
 679         return newdata; //length
 680 }
 681
 682 uchar * combine(uchar*masterdata, int masterlength, char*_slavename, uchar*slavedata, int slavelength, int*newlength)
 683 {
 684     char master_flash = 0;
 685     char slave_flash = 0;
 686     slavename = _slavename;
 687
 688     slaveid = -1;
 689     slaveframe = -1;
 690
 691     if(slavename[0] == '#')
 692     {
 693         slaveid = atoi(&slavename[1]);
 694         slavename = 0;
 695     }
 696     if(config.isframe)
 697     {
 698         slaveframe = slaveid;
 699         slaveid = -1;
 700     }
 701
 702     logf("<debug> move x (%d)", config.movex);
 703     logf("<debug> move y (%d)", config.movey);
 704     logf("<debug> scale x (%f)", config.scalex);
 705     logf("<debug> scale y (%f)", config.scaley);
 706     logf("<debug> is frame (%d)", config.isframe);
 707
 708     memset(masterids, -1, sizeof(masterids));
 709
 710     if(masterlength < 3)
 711     {
 712         logf("<fatal> the master file is too small (%d bytes)", masterlength);
 713         return 0;
 714     }
 715     if(slavelength < 3)
 716     {
 717         logf("<fatal> the slave file is too small (%d bytes)", slavelength);
 718         return 0;
 719     }
 720     if(masterdata[2] == 'S' &&
 721        masterdata[1] == 'W' &&
 722        masterdata[0] == 'F')
 723     {
 724         logf("<notice> the master file is flash (swf) format\n");
 725         master_flash = 1;
 726     }
 727     else
 728         logf("<notice> the master file is not flash (swf) format!\n");
 729
 730     if(slavedata[2] == 'S' &&
 731        slavedata[1] == 'W' &&
 732        slavedata[0] == 'F')
 733     {
 734         logf("<notice> the slave file is flash (swf) format\n");
 735         slave_flash = 1;
 736     }
 737     else
 738         logf("<notice> the slave file is not flash (swf) format!\n");
 739
 740     if(master_flash && slave_flash) {
 741         read_swf(&master, masterdata, masterlength);
 742         if(config.cat)
 743             return catcombine(masterdata, masterlength, _slavename, slavedata, slavelength, newlength);
 744         else
 745             return normalcombine(masterdata, masterlength, _slavename, slavedata, slavelength, newlength);
 746     }
 747
 748     *newlength = 0;
 749     return 0;
 750 }