1 /* vi: set sts=2 sw=2 :*/
4 Library for creating and reading SWF files or parts of it.
5 There's a module directory which provides some extended functionality.
6 Most modules are included at the bottom of this file.
8 Part of the swftools package.
10 Copyright (c) 2000-2003 Rainer Böhme <rfxswf@reflex-studio.de>
11 Copyright (c) 2003 Matthias Kramm <kramm@quiss.org>
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
32 #endif // HAVE_JPEGLIB
38 #ifndef RFXSWF_DISABLESOUND
40 #include "lame/lame.h"
53 #define MALLOC_SIZE 128
54 #define INSERT_RFX_TAG
56 #define MEMSIZE(l) (((l/MALLOC_SIZE)+1)*MALLOC_SIZE)
59 // inline wrapper functions
61 TAG * swf_NextTag(TAG * t) { return t->next; }
62 TAG * swf_PrevTag(TAG * t) { return t->prev; }
63 U16 swf_GetTagID(TAG * t) { return t->id; }
64 U32 swf_GetTagLen(TAG * t) { return t->len; }
65 U8* swf_GetTagLenPtr(TAG * t) { return &(t->data[t->len]); }
66 U32 swf_GetTagPos(TAG * t) { return t->pos; }
68 // for future purpose: avoid high level lib functions to change tagpos/bitpos
70 #define swf_SaveTagPos(tag)
71 #define swf_RestoreTagPos(tag)
73 void swf_SetTagPos(TAG * t,U32 pos)
74 { swf_ResetReadBits(t);
75 if (pos<=t->len) t->pos = pos;
78 fprintf(stderr,"SetTagPos(%d) out of bounds: TagID = %i\n",pos, t->id);
83 char* swf_GetString(TAG*t)
85 char* str = ((char*)(&(t)->data[(t)->pos]));
91 { swf_ResetReadBits(t);
94 { fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);
98 return t->data[t->pos++];
101 U16 swf_GetU16(TAG * t)
103 swf_ResetReadBits(t);
105 if (t->pos>(t->len-2))
106 { fprintf(stderr,"GetU16() out of bounds: TagID = %i\n",t->id);
110 res = t->data[t->pos] | (t->data[t->pos+1]<<8);
115 U32 swf_GetU32(TAG * t)
117 swf_ResetReadBits(t);
119 if (t->pos>(t->len-4))
120 { fprintf(stderr,"GetU32() out of bounds: TagID = %i\n",t->id);
124 res = t->data[t->pos] | (t->data[t->pos+1]<<8) |
125 (t->data[t->pos+2]<<16) | (t->data[t->pos+3]<<24);
130 int swf_GetBlock(TAG * t,U8 * b,int l)
131 // returns number of bytes written (<=l)
132 // b = NULL -> skip data
133 { swf_ResetReadBits(t);
134 if ((t->len-t->pos)<l) l=t->len-t->pos;
135 if (b && l) memcpy(b,&t->data[t->pos],l);
140 int swf_SetBlock(TAG * t,U8 * b,int l)
141 // Appends Block to the end of Tagdata, returns size
142 { U32 newlen = t->len + l;
143 swf_ResetWriteBits(t);
144 if (newlen>t->memsize)
145 { U32 newmem = MEMSIZE(newlen);
146 U8 * newdata = (U8*)((t->data)?realloc(t->data,newmem):malloc(newmem));
150 fprintf(stderr,"Fatal Error: malloc()/realloc() failed (1). (%d bytes)\n", newmem);
158 if (b) memcpy(&t->data[t->len],b,l);
159 else memset(&t->data[t->len],0x00,l);
164 int swf_SetU8(TAG * t,U8 v)
165 { swf_ResetWriteBits(t);
166 if ((t->len+1)>t->memsize) return (swf_SetBlock(t,&v,1)==1)?0:-1;
167 t->data[t->len++] = v;
171 int swf_SetU16(TAG * t,U16 v)
176 swf_ResetWriteBits(t);
177 if ((t->len+2)>t->memsize) return (swf_SetBlock(t,a,2)==2)?0:-1;
178 t->data[t->len++] = a[0];
179 t->data[t->len++] = a[1];
183 int swf_SetU32(TAG * t,U32 v)
185 a[0] = v&0xff; // to ensure correct handling of non-intel byteorder
190 swf_ResetWriteBits(t);
191 if ((t->len+4)>t->memsize) return (swf_SetBlock(t,a,4)==4)?0:-1;
192 t->data[t->len++] = a[0];
193 t->data[t->len++] = a[1];
194 t->data[t->len++] = a[2];
195 t->data[t->len++] = a[3];
199 U32 swf_GetBits(TAG * t,int nbits)
201 if (!nbits) return 0;
202 if (!t->readBit) t->readBit = 0x80;
205 if (t->data[t->pos]&t->readBit) res|=1;
209 { if (nbits) t->readBit = 0x80;
212 { fprintf(stderr,"GetBits() out of bounds: TagID = %i\n",t->id);
222 S32 swf_GetSBits(TAG * t,int nbits)
223 { U32 res = swf_GetBits(t,nbits);
224 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
228 U32 reader_GetBits(struct reader_t*reader, int nbits)
229 { return reader_readbits(reader, nbits);
231 S32 reader_GetSBits(struct reader_t*reader, int nbits)
232 { U32 res = reader_readbits(reader, nbits);
233 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
237 int swf_SetBits(TAG * t,U32 v,int nbits)
238 { U32 bm = 1<<(nbits-1);
242 { if (FAILED(swf_SetU8(t,0))) return -1;
245 if (v&bm) t->data[t->len-1] |= t->writeBit;
253 // Advanced Data Access Functions
255 int swf_SetRGB(TAG * t,RGBA * col)
258 { swf_SetU8(t,col->r);
261 } else swf_SetBlock(t,NULL,3);
264 void swf_GetRGB(TAG * t, RGBA * col)
269 col->r = swf_GetU8(t);
270 col->g = swf_GetU8(t);
271 col->b = swf_GetU8(t);
275 int swf_SetRGBA(TAG * t,RGBA * col)
278 { swf_SetU8(t,col->r);
282 } else swf_SetBlock(t,NULL,4);
285 void swf_GetRGBA(TAG * t, RGBA * col)
290 col->r = swf_GetU8(t);
291 col->g = swf_GetU8(t);
292 col->b = swf_GetU8(t);
293 col->a = swf_GetU8(t);
296 void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
301 memset(gradient, 0, sizeof(GRADIENT));
306 gradient->num = swf_GetU8(tag);
307 for(t=0;t<gradient->num;t++)
312 gradient->ratios[t] = swf_GetU8(tag);
314 swf_GetRGB(tag, &gradient->rgba[t]);
316 swf_GetRGBA(tag, &gradient->rgba[t]);
320 void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
324 memset(gradient, 0, sizeof(GRADIENT));
327 swf_SetU8(tag, gradient->num);
328 for(t=0; t<8 && t<gradient->num; t++)
330 swf_SetU8(tag, gradient->ratios[t]);
332 swf_SetRGB(tag, &gradient->rgba[t]);
334 swf_SetRGBA(tag, &gradient->rgba[t]);
338 int swf_CountUBits(U32 v,int nbits)
341 if(v == 0x00000000) n = 0;
347 return (n>nbits)?n:nbits;
350 int swf_CountBits(U32 v,int nbits)
354 { if(v == 0xffffffff) n = 1;
362 { if(v == 0x00000000) n = 0;
369 return (n>nbits)?n:nbits;
372 int swf_GetRect(TAG * t,SRECT * r)
375 if(!t) {r->xmin=r->xmax=r->ymin=r->ymax=0;return 0;}
377 nbits = (int) swf_GetBits(t,5);
378 r->xmin = swf_GetSBits(t,nbits);
379 r->xmax = swf_GetSBits(t,nbits);
380 r->ymin = swf_GetSBits(t,nbits);
381 r->ymax = swf_GetSBits(t,nbits);
385 int reader_GetRect(struct reader_t*reader,SRECT * r)
389 nbits = (int) reader_GetBits(reader,5);
390 r->xmin = reader_GetSBits(reader,nbits);
391 r->xmax = reader_GetSBits(reader,nbits);
392 r->ymin = reader_GetSBits(reader,nbits);
393 r->ymax = reader_GetSBits(reader,nbits);
397 int swf_SetRect(TAG * t,SRECT * r)
400 nbits = swf_CountBits(r->xmin,0);
401 nbits = swf_CountBits(r->xmax,nbits);
402 nbits = swf_CountBits(r->ymin,nbits);
403 nbits = swf_CountBits(r->ymax,nbits);
405 fprintf(stderr, "rfxswf: Warning: num_bits overflow in swf_SetRect\n");
409 swf_SetBits(t,nbits,5);
410 swf_SetBits(t,r->xmin,nbits);
411 swf_SetBits(t,r->xmax,nbits);
412 swf_SetBits(t,r->ymin,nbits);
413 swf_SetBits(t,r->ymax,nbits);
418 void swf_ExpandRect(SRECT*src, SPOINT add)
420 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
425 if((add.x|add.y) == 0) src->xmax++; //make sure the bbox is not NULL anymore
428 if(add.x < src->xmin)
430 if(add.x > src->xmax)
432 if(add.y < src->ymin)
434 if(add.y > src->ymax)
437 void swf_ExpandRect2(SRECT*src, SRECT*add)
439 if((add->xmin | add->ymin | add->xmax | add->ymax)==0)
441 if((src->xmin | src->ymin | src->xmax | src->ymax)==0)
443 if(add->xmin < src->xmin)
444 src->xmin = add->xmin;
445 if(add->ymin < src->ymin)
446 src->ymin = add->ymin;
447 if(add->xmax > src->xmax)
448 src->xmax = add->xmax;
449 if(add->ymax > src->ymax)
450 src->ymax = add->ymax;
452 void swf_ExpandRect3(SRECT*src, SPOINT center, int radius)
454 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
455 src->xmin = center.x-radius;
456 src->ymin = center.y-radius;
457 src->xmax = center.x+radius;
458 src->ymax = center.y+radius;
459 if((center.x|center.y|radius) == 0) src->xmax++; //make sure the bbox is not NULL anymore
462 if(center.x - radius < src->xmin)
463 src->xmin = center.x - radius;
464 if(center.x + radius > src->xmax)
465 src->xmax = center.x - radius;
466 if(center.y - radius < src->ymin)
467 src->ymin = center.y - radius;
468 if(center.y + radius > src->ymax)
469 src->ymax = center.y - radius;
471 SPOINT swf_TurnPoint(SPOINT p, MATRIX* m)
474 r.x = (int)(m->sx*(1/65536.0)*p.x + m->r1*(1/65536.0)*p.y + 0.5) + m->tx;
475 r.y = (int)(m->r0*(1/65536.0)*p.x + m->sy*(1/65536.0)*p.y + 0.5) + m->ty;
478 SRECT swf_TurnRect(SRECT r, MATRIX* m)
481 SPOINT p1,p2,p3,p4,pp1,pp2,pp3,pp4;
482 p1.x = r.xmin;p1.y = r.ymin;
483 p2.x = r.xmax;p2.y = r.ymin;
484 p3.x = r.xmin;p3.y = r.ymax;
485 p4.x = r.xmax;p4.y = r.ymax;
486 pp1 = swf_TurnPoint(p1, m);
487 pp2 = swf_TurnPoint(p2, m);
488 pp3 = swf_TurnPoint(p3, m);
489 pp4 = swf_TurnPoint(p4, m);
490 g.xmin = g.xmax = pp1.x;
491 g.ymin = g.ymax = pp1.y;
492 swf_ExpandRect(&g, pp2);
493 swf_ExpandRect(&g, pp3);
494 swf_ExpandRect(&g, pp4);
499 int swf_GetMatrix(TAG * t,MATRIX * m)
506 { m->sx = m->sy = 0x10000;
512 swf_ResetReadBits(t);
514 if (swf_GetBits(t,1))
515 { nbits = swf_GetBits(t,5);
516 m->sx = swf_GetSBits(t,nbits);
517 m->sy = swf_GetSBits(t,nbits);
519 else m->sx = m->sy = 0x10000;
521 if (swf_GetBits(t,1))
522 { nbits = swf_GetBits(t,5);
523 m->r0 = swf_GetSBits(t,nbits);
524 m->r1 = swf_GetSBits(t,nbits);
526 else m->r0 = m->r1 = 0x0;
528 nbits = swf_GetBits(t,5);
529 m->tx = swf_GetSBits(t,nbits);
530 m->ty = swf_GetSBits(t,nbits);
535 int swf_SetMatrix(TAG * t,MATRIX * m)
541 ma.sx = ma.sy = 0x10000;
546 swf_ResetWriteBits(t);
548 if ((m->sx==0x10000)&&(m->sy==0x10000)) swf_SetBits(t,0,1);
550 { swf_SetBits(t,1,1);
551 nbits = swf_CountBits(m->sx,0);
552 nbits = swf_CountBits(m->sy,nbits);
554 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
557 swf_SetBits(t,nbits,5);
558 swf_SetBits(t,m->sx,nbits);
559 swf_SetBits(t,m->sy,nbits);
562 if ((!m->r0)&&(!m->r1)) swf_SetBits(t,0,1);
564 { swf_SetBits(t,1,1);
565 nbits = swf_CountBits(m->r0,0);
566 nbits = swf_CountBits(m->r1,nbits);
568 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
571 swf_SetBits(t,nbits,5);
572 swf_SetBits(t,m->r0,nbits);
573 swf_SetBits(t,m->r1,nbits);
576 nbits = swf_CountBits(m->tx,0);
577 nbits = swf_CountBits(m->ty,nbits);
579 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
582 swf_SetBits(t,nbits,5);
583 swf_SetBits(t,m->tx,nbits);
584 swf_SetBits(t,m->ty,nbits);
589 int swf_GetCXForm(TAG * t,CXFORM * cx,U8 alpha) //FIXME: alpha should be type bool
597 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
598 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
602 swf_ResetReadBits(t);
603 hasadd = swf_GetBits(t,1);
604 hasmul = swf_GetBits(t,1);
605 nbits = swf_GetBits(t,4);
608 { cx->r0 = (S16)swf_GetSBits(t,nbits);
609 cx->g0 = (S16)swf_GetSBits(t,nbits);
610 cx->b0 = (S16)swf_GetSBits(t,nbits);
612 cx->a0 = (S16)swf_GetSBits(t,nbits);
616 { cx->r1 = (S16)swf_GetSBits(t,nbits);
617 cx->g1 = (S16)swf_GetSBits(t,nbits);
618 cx->b1 = (S16)swf_GetSBits(t,nbits);
620 cx->a1 = (S16)swf_GetSBits(t,nbits);
626 int swf_SetCXForm(TAG * t,CXFORM * cx,U8 alpha)
634 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
635 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
645 hasmul = (cx->a0!=256)||(cx->r0!=256)||(cx->g0!=256)||(cx->b0!=256);
646 hasadd = cx->a1|cx->r1|cx->g1|cx->b1;
649 { if (alpha) nbits = swf_CountBits((S32)cx->a0,nbits);
650 nbits = swf_CountBits((S32)cx->r0,nbits);
651 nbits = swf_CountBits((S32)cx->g0,nbits);
652 nbits = swf_CountBits((S32)cx->b0,nbits);
656 { if (alpha) nbits = swf_CountBits((S32)cx->a1,nbits);
657 nbits = swf_CountBits((S32)cx->r1,nbits);
658 nbits = swf_CountBits((S32)cx->g1,nbits);
659 nbits = swf_CountBits((S32)cx->b1,nbits);
662 swf_ResetWriteBits(t);
663 swf_SetBits(t,hasadd?1:0,1);
664 swf_SetBits(t,hasmul?1:0,1);
665 swf_SetBits(t,nbits,4);
668 { swf_SetBits(t,cx->r0,nbits);
669 swf_SetBits(t,cx->g0,nbits);
670 swf_SetBits(t,cx->b0,nbits);
671 if (alpha) swf_SetBits(t,cx->a0,nbits);
675 { swf_SetBits(t,cx->r1,nbits);
676 swf_SetBits(t,cx->g1,nbits);
677 swf_SetBits(t,cx->b1,nbits);
678 if (alpha) swf_SetBits(t,cx->a1,nbits);
684 //int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
685 //int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
687 void swf_SetPassword(TAG * t, const char * password)
689 /* WARNING: crypt_md5 is not reentrant */
693 #if defined(HAVE_LRAND48) && defined(HAVE_SRAND48) && defined(HAVE_TIME_H) && defined(HAVE_TIME)
695 salt[0] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
696 salt[1] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
700 fprintf(stderr, "rfxswf: Warning- no usable random generator found\n");
701 fprintf(stderr, "Your password will be vulnerable to dictionary attacks\n");
704 md5string = crypt_md5(password, salt);
707 swf_SetString(t, md5string);
710 int swf_VerifyPassword(TAG * t, const char * password)
712 char*md5string1, *md5string2;
717 if(t->len >= 5 && t->pos==0 &&
722 printf("%d %d %d %d\n", t->len, t->pos, t->data[0], t->data[1]);
725 md5string1 = swf_GetString(t);
727 if(strncmp(md5string1, "$1$",3 )) {
728 fprintf(stderr, "rfxswf: no salt in pw string\n");
731 x = strchr(md5string1+3, '$');
733 fprintf(stderr, "rfxswf: invalid salt format in pw string\n");
736 n = x-(md5string1+3);
737 salt = (char*)malloc(n+1);
738 memcpy(salt, md5string1+3, n);
741 md5string2 = crypt_md5(password, salt);
743 if(strcmp(md5string1, md5string2) != 0)
748 // Tag List Manipulating Functions
750 TAG * swf_InsertTag(TAG * after,U16 id)
753 t = (TAG *)malloc(sizeof(TAG));
755 { memset(t,0x00,sizeof(TAG));
761 t->next = after->next;
763 if (t->next) t->next->prev = t;
769 TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)
772 t = (TAG *)malloc(sizeof(TAG));
774 { memset(t,0x00,sizeof(TAG));
780 t->prev = before->prev;
782 if (t->prev) t->prev->next = t;
785 if(swf && swf->firstTag == before) {
791 void swf_ClearTag(TAG * t)
793 if (t->data) free(t->data);
802 void swf_ResetTag(TAG*tag, U16 id)
804 tag->len = tag->pos = tag->readBit = tag->writeBit = 0;
808 int swf_DeleteTag(TAG * t)
811 if (t->prev) t->prev->next = t->next;
812 if (t->next) t->next->prev = t->prev;
814 if (t->data) free(t->data);
819 TAG * swf_ReadTag(struct reader_t*reader, TAG * prev)
825 if (reader->read(reader, &raw, 2) !=2 ) return NULL;
833 if (reader->read(reader, &len, 4) != 4) return NULL;
837 if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
838 // Sprite handling fix: Flatten sprite tree
840 t = (TAG *)malloc(sizeof(TAG));
845 fprintf(stderr,"Fatal Error: malloc()/realloc() failed (2). (%d bytes)\n", sizeof(TAG));
850 memset(t,0x00,sizeof(TAG));
856 { t->data = (U8*)malloc(t->len);
860 fprintf(stderr,"Fatal Error: malloc()/realloc() failed (3). (%d bytes)\n", t->len);
865 if (reader->read(reader, t->data, t->len) != t->len) return NULL;
877 int swf_DefineSprite_GetRealSize(TAG * t);
879 int swf_WriteTag2(struct writer_t*writer, TAG * t)
880 // returns tag length in bytes (incl. Header), -1 = Error
881 // writer = 0 -> no output
888 len = (t->id==ST_DEFINESPRITE)?swf_DefineSprite_GetRealSize(t):t->len;
890 short_tag = len<0x3f&&(t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2);
894 { raw[0] = SWAP16(len|((t->id&0x3ff)<<6));
895 if (writer->write(writer,raw,2)!=2)
898 fprintf(stderr,"WriteTag() failed: Short Header.\n");
905 raw[0] = SWAP16((t->id<<6)|0x3f);
906 if (writer->write(writer,raw,2)!=2)
909 fprintf(stderr,"WriteTag() failed: Long Header (1).\n");
915 if (writer->write(writer,&len,4)!=4)
918 fprintf(stderr,"WriteTag() failed: Long Header (2).\n");
925 { if (writer->write(writer,t->data,t->len)!=t->len)
928 fprintf(stderr,"WriteTag() failed: Data.\n");
934 else if (t->len) fprintf(stderr,"WriteTag(): Tag Data Error, id=%i\n",t->id);
938 return t->len+(short_tag?2:6);
941 int swf_WriteTag(int handle, TAG * t)
943 struct writer_t writer;
946 return swf_WriteTag2(0, t);
947 writer_init_filewriter(&writer, handle);
948 len = swf_WriteTag2(&writer, t);
949 writer.finish(&writer);
953 int swf_DefineSprite_GetRealSize(TAG * t)
954 // Sprite Handling: Helper function to pack DefineSprite-Tag
956 if(len>4) { // folded sprite
960 { t = swf_NextTag(t);
961 if (t && t->id!=ST_DEFINESPRITE) len += swf_WriteTag(-1, t);
963 } while (t&&(t->id!=ST_END));
967 void swf_UnFoldSprite(TAG * t)
972 U16 spriteid,spriteframes;
974 if(t->id!=ST_DEFINESPRITE)
976 if(t->len<=4) // not folded
981 spriteid = swf_GetU16(t); //id
982 spriteframes = swf_GetU16(t); //frames
994 if(id == ST_DEFINESPRITE && len<=4)
999 it = swf_InsertTag(next, id);
1004 { it->data = (U8*)malloc(it->len);
1005 it->memsize = it->len;
1006 swf_GetBlock(t, it->data, it->len);
1013 free(t->data); t->data = 0;
1014 t->memsize = t->len = t->pos = 0;
1016 swf_SetU16(t, spriteid);
1017 swf_SetU16(t, spriteframes);
1020 void swf_FoldSprite(TAG * t)
1023 U16 id,frames,tmpid;
1025 if(t->id!=ST_DEFINESPRITE)
1028 fprintf(stderr, "Error: Sprite has no ID!");
1032 /* sprite is already folded */
1039 t->len = t->pos = t->memsize = 0;
1044 t = swf_NextTag(sprtag);
1049 if(t->id==ST_SHOWFRAME) frames++;
1050 if(t->id == ST_DEFINESPRITE && t->len<=4)
1055 } while(t && level);
1057 fprintf(stderr, "rfxswf error: sprite doesn't end(1)\n");
1059 swf_SetU16(sprtag, id);
1060 swf_SetU16(sprtag, frames);
1062 t = swf_NextTag(sprtag);
1067 if(t->len<0x3f&&t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2) {
1068 swf_SetU16(sprtag,t->len|(t->id<<6));
1070 swf_SetU16(sprtag,0x3f|(t->id<<6));
1071 swf_SetU32(sprtag,t->len);
1074 swf_SetBlock(sprtag,t->data, t->len);
1076 if(t->id == ST_DEFINESPRITE && t->len<=4)
1085 fprintf(stderr, "rfxswf error: sprite doesn't end(2)\n");
1087 // sprtag->next = t;
1088 // t->prev = sprtag;
1091 int swf_IsFolded(TAG * t)
1093 return (t->id == ST_DEFINESPRITE && t->len>4);
1096 void swf_FoldAll(SWF*swf)
1098 TAG*tag = swf->firstTag;
1099 //swf_DumpSWF(stdout, swf);
1101 if(tag->id == ST_DEFINESPRITE) {
1102 swf_FoldSprite(tag);
1103 //swf_DumpSWF(stdout, swf);
1105 tag = swf_NextTag(tag);
1109 void swf_UnFoldAll(SWF*swf)
1111 TAG*tag = swf->firstTag;
1113 if(tag->id == ST_DEFINESPRITE)
1114 swf_UnFoldSprite(tag);
1119 void swf_OptimizeTagOrder(SWF*swf)
1126 /* at the moment, we don't actually do optimizing,
1127 only fixing of non-spec-conformant things like
1134 tag = swf->firstTag;
1137 if(tag->id == ST_DEFINESPRITE) {
1139 /* ??? all sprites are supposed to be unfolded */
1140 fprintf(stderr, "librfxswf error - internal error in OptimizeTagOrder/UnfoldAll\n");
1150 /* move non-sprite tags out of sprite */
1151 if(!swf_isAllowedSpriteTag(tag) || level>=2) {
1152 /* remove tag from current position */
1153 tag->prev->next = tag->next;
1155 tag->next->prev = tag->prev;
1157 /* insert before tag level0 */
1159 tag->prev = level0->prev;
1161 tag->prev->next = tag;
1165 if(tag->id == ST_END) {
1176 int swf_ReadSWF2(struct reader_t*reader, SWF * swf) // Reads SWF to memory (malloc'ed), returns length or <0 if fails
1178 if (!swf) return -1;
1179 memset(swf,0x00,sizeof(SWF));
1181 { char b[32]; // read Header
1185 struct reader_t zreader;
1187 if ((len = reader->read(reader ,b,8))<8) return -1;
1189 if (b[0]!='F' && b[0]!='C') return -1;
1190 if (b[1]!='W') return -1;
1191 if (b[2]!='S') return -1;
1192 swf->fileVersion = b[3];
1193 swf->compressed = (b[0]=='C')?1:0;
1194 swf->fileSize = GET32(&b[4]);
1196 if(swf->compressed) {
1197 reader_init_zlibinflate(&zreader, reader);
1201 reader_GetRect(reader, &swf->movieSize);
1202 reader->read(reader, &swf->frameRate, 2);
1203 swf->frameRate = SWAP16(swf->frameRate);
1204 reader->read(reader, &swf->frameCount, 2);
1205 swf->frameCount = SWAP16(swf->frameCount);
1207 /* read tags and connect to list */
1209 while (t) t = swf_ReadTag(reader,t);
1210 swf->firstTag = t1.next;
1211 t1.next->prev = NULL;
1217 int swf_ReadSWF(int handle, SWF * swf)
1219 struct reader_t reader;
1220 reader_init_filereader(&reader, handle);
1221 return swf_ReadSWF2(&reader, swf);
1224 int swf_WriteSWF2(struct writer_t*writer, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1228 struct writer_t zwriter;
1231 int writer_lastpos = 0;
1234 if (!swf) return -1;
1235 if (!writer) return -1; // the caller should provide a nullwriter, not 0, for querying SWF size
1237 if(writer) writer_lastpos = writer->pos;
1239 // Insert REFLEX Tag
1241 #ifdef INSERT_RFX_TAG
1243 if (swf->firstTag && swf_NextTag(swf->firstTag))
1244 if (swf_GetTagID(swf_NextTag(swf->firstTag))!=ST_REFLEX)
1245 swf_SetBlock(swf_InsertTagBefore(swf, swf->firstTag,ST_REFLEX),"rfx",3);
1247 #endif // INSERT_RFX_TAG
1249 // Count Frames + File Size
1256 len += swf_WriteTag(-1,t);
1257 if(t->id == ST_DEFINESPRITE) inSprite++;
1258 else if(t->id == ST_END && inSprite) inSprite--;
1259 else if(t->id == ST_SHOWFRAME && !inSprite) frameCount++;
1267 memset(&t1,0x00,sizeof(TAG));
1271 { // measure header file size
1274 memset(&t2,0x00,sizeof(TAG));
1277 swf_SetRect(&t2, &swf->movieSize);
1278 swf_SetU16(&t2, swf->frameRate);
1279 swf_SetU16(&t2, swf->frameCount);
1280 l = swf_GetTagLen(&t2)+8;
1282 if(swf->compressed == 8) {
1287 if(len) {// don't touch headers without tags
1288 swf->fileSize = fileSize;
1289 swf->frameCount = frameCount;
1292 if(swf->compressed != 8) {
1293 /* compressed flag set to 8 means "skip first 8
1294 header bytes". This is necessary if the caller wants to
1295 create compressed SWFs himself .
1296 It also means that we don't initialize our own zlib
1297 writer, but assume the caller provided one.
1299 if(swf->compressed) {
1301 writer->write(writer, id, 3);
1305 writer->write(writer, id, 3);
1308 writer->write(writer, &swf->fileVersion, 1);
1309 PUT32(b4, swf->fileSize);
1310 writer->write(writer, b4, 4);
1312 if(swf->compressed) {
1313 writer_init_zlibdeflate(&zwriter, writer);
1318 swf_SetRect(&t1,&swf->movieSize);
1319 swf_SetU16(&t1,swf->frameRate);
1320 swf_SetU16(&t1,swf->frameCount);
1322 ret = writer->write(writer,b,swf_GetTagLen(&t1));
1323 if (ret!=swf_GetTagLen(&t1))
1326 fprintf(stderr, "ret:%d\n",ret);
1328 fprintf(stderr,"WriteSWF() failed: Header.\n");
1335 { if (swf_WriteTag2(writer, t)<0) return -1;
1338 if(swf->compressed) {
1339 if(swf->compressed != 8) {
1340 zwriter.finish(&zwriter);
1341 return writer->pos - writer_lastpos;
1343 return (int)fileSize;
1345 return (int)fileSize;
1350 int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1352 struct writer_t writer;
1354 swf->compressed = 0;
1357 writer_init_nullwriter(&writer);
1358 len = swf_WriteSWF2(&writer, swf);
1360 writer_init_filewriter(&writer, handle);
1361 len = swf_WriteSWF2(&writer, swf);
1362 writer.finish(&writer);
1366 int swf_WriteSWC(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1368 struct writer_t writer;
1370 swf->compressed = 1;
1373 writer_init_nullwriter(&writer);
1374 len = swf_WriteSWF2(&writer, swf);
1376 writer_init_filewriter(&writer, handle);
1377 len = swf_WriteSWF2(&writer, swf);
1378 writer.finish(&writer);
1382 int swf_WriteHeader2(struct writer_t*writer,SWF * swf)
1385 memcpy(&myswf,swf,sizeof(SWF));
1387 return swf_WriteSWF2(writer, &myswf);
1390 int swf_WriteHeader(int handle,SWF * swf)
1393 memcpy(&myswf,swf,sizeof(SWF));
1395 return swf_WriteSWF(handle, &myswf);
1398 int swf_WriteCGI(SWF * swf)
1402 len = swf_WriteSWF(-1,swf);
1404 if (len<0) return -1;
1406 sprintf(s,"Content-type: application/x-shockwave-flash\n"
1407 "Accept-Ranges: bytes\n"
1408 "Content-Length: %lu\n"
1409 "Expires: Thu, 13 Apr 2000 23:59:59 GMT\n"
1412 write(fileno(stdout),s,strlen(s));
1413 return swf_WriteSWF(fileno(stdout),swf);
1416 void swf_FreeTags(SWF * swf) // Frees all malloc'ed memory for tags
1417 { TAG * t = swf->firstTag;
1420 { TAG * tnew = t->next;
1421 if (t->data) free(t->data);
1428 // include advanced functions
1430 #include "modules/swfdump.c"
1431 #include "modules/swfshape.c"
1432 #include "modules/swftext.c"
1433 #include "modules/swffont.c"
1434 #include "modules/swfobject.c"
1435 #include "modules/swfbutton.c"
1436 #include "modules/swftools.c"
1437 #include "modules/swfcgi.c"
1438 #include "modules/swfbits.c"
1439 #include "modules/swfaction.c"
1440 #include "modules/swfsound.c"
1441 #include "modules/swfdraw.c"