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 */
33 #ifndef RFXSWF_DISABLESOUND
35 #include "lame/lame.h"
53 #define MALLOC_SIZE 128
54 #define INSERT_RFX_TAG
56 #define MEMSIZE(l) (((l/MALLOC_SIZE)+1)*MALLOC_SIZE)
58 // inline wrapper functions
60 TAG * swf_NextTag(TAG * t) { return t->next; }
61 TAG * swf_PrevTag(TAG * t) { return t->prev; }
62 U16 swf_GetTagID(TAG * t) { return t->id; }
63 U32 swf_GetTagLen(TAG * t) { return t->len; }
64 U8* swf_GetTagLenPtr(TAG * t) { return &(t->data[t->len]); }
65 U32 swf_GetTagPos(TAG * t) { return t->pos; }
67 void swf_SetTagPos(TAG * t,U32 pos)
68 { swf_ResetReadBits(t);
69 if (pos<=t->len) t->pos = pos;
72 fprintf(stderr,"SetTagPos(%d) out of bounds: TagID = %i\n",pos, t->id);
77 char* swf_GetString(TAG*t)
80 while(t->pos < t->len && swf_GetU8(t));
81 /* make sure we always have a trailing zero byte */
82 if(t->pos == t->len) {
83 if(t->len == t->memsize) {
84 swf_ResetWriteBits(t);
90 return (char*)&(t->data[pos]);
94 { swf_ResetReadBits(t);
96 if ((int)t->pos>=(int)t->len)
97 { fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);
102 return t->data[t->pos++];
105 U16 swf_GetU16(TAG * t)
107 swf_ResetReadBits(t);
109 if ((int)t->pos>((int)t->len-2))
110 { fprintf(stderr,"GetU16() out of bounds: TagID = %i\n",t->id);
114 res = t->data[t->pos] | (t->data[t->pos+1]<<8);
119 U32 swf_GetU32(TAG * t)
121 swf_ResetReadBits(t);
123 if ((int)t->pos>((int)t->len-4))
124 { fprintf(stderr,"GetU32() out of bounds: TagID = %i\n",t->id);
128 res = t->data[t->pos] | (t->data[t->pos+1]<<8) |
129 (t->data[t->pos+2]<<16) | (t->data[t->pos+3]<<24);
134 int swf_GetBlock(TAG * t,U8 * b,int l)
135 // returns number of bytes written (<=l)
136 // b = NULL -> skip data
137 { swf_ResetReadBits(t);
138 if ((t->len-t->pos)<l) l=t->len-t->pos;
139 if (b && l) memcpy(b,&t->data[t->pos],l);
144 int swf_SetBlock(TAG * t,const U8 * b,int l)
145 // Appends Block to the end of Tagdata, returns size
146 { U32 newlen = t->len + l;
147 swf_ResetWriteBits(t);
148 if (newlen>t->memsize)
149 { U32 newmem = MEMSIZE(newlen);
150 U8 * newdata = (U8*)(rfx_realloc(t->data,newmem));
154 if (b) memcpy(&t->data[t->len],b,l);
155 else memset(&t->data[t->len],0x00,l);
160 int swf_SetU8(TAG * t,U8 v)
161 { swf_ResetWriteBits(t);
162 if ((t->len+1)>t->memsize) return (swf_SetBlock(t,&v,1)==1)?0:-1;
163 t->data[t->len++] = v;
167 int swf_SetU16(TAG * t,U16 v)
172 swf_ResetWriteBits(t);
173 if ((t->len+2)>t->memsize) return (swf_SetBlock(t,a,2)==2)?0:-1;
174 t->data[t->len++] = a[0];
175 t->data[t->len++] = a[1];
178 void swf_SetS16(TAG * t,int v)
180 if(v>32767 || v<-32768) {
182 fprintf(stderr, "Warning: S16 overflow: %d\n", v);
185 swf_SetU16(t, (S16)v);
188 int swf_SetU32(TAG * t,U32 v)
190 a[0] = v&0xff; // to ensure correct handling of non-intel byteorder
195 swf_ResetWriteBits(t);
196 if ((t->len+4)>t->memsize) return (swf_SetBlock(t,a,4)==4)?0:-1;
197 t->data[t->len++] = a[0];
198 t->data[t->len++] = a[1];
199 t->data[t->len++] = a[2];
200 t->data[t->len++] = a[3];
204 U32 swf_GetBits(TAG * t,int nbits)
206 if (!nbits) return 0;
207 if (!t->readBit) t->readBit = 0x80;
212 { fprintf(stderr,"GetBits() out of bounds: TagID = %i, pos=%d, len=%d\n",t->id, t->pos, t->len);
213 int i,m=t->len>10?10:t->len;
215 fprintf(stderr, "(%d)%02x ", i, t->data[i]);
217 fprintf(stderr, "\n");
221 if (t->data[t->pos]&t->readBit) res|=1;
225 { if (nbits) t->readBit = 0x80;
232 S32 swf_GetSBits(TAG * t,int nbits)
233 { U32 res = swf_GetBits(t,nbits);
234 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
238 U32 reader_GetBits(reader_t*reader, int nbits)
239 { return reader_readbits(reader, nbits);
241 S32 reader_GetSBits(reader_t*reader, int nbits)
242 { U32 res = reader_readbits(reader, nbits);
243 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
247 int swf_SetBits(TAG * t,U32 v,int nbits)
248 { U32 bm = 1<<(nbits-1);
252 { if (FAILED(swf_SetU8(t,0))) return -1;
255 if (v&bm) t->data[t->len-1] |= t->writeBit;
263 // Advanced Data Access Functions
265 double swf_GetFixed(TAG * t)
267 U16 low = swf_GetU16(t);
268 U16 high = swf_GetU16(t);
269 return high + low*(1/65536.0);
271 void swf_SetFixed(TAG * t, double f)
273 U16 fr = (U16)((f-(int)f)*65536);
275 swf_SetU16(t, (U16)f - (f<0 && fr!=0));
277 float swf_GetFixed8(TAG * t)
279 U8 low = swf_GetU8(t);
280 U8 high = swf_GetU8(t);
281 return (float)(high + low*(1/256.0));
283 void swf_SetFixed8(TAG * t, float f)
285 U8 fr = (U8)((f-(int)f)*256);
287 swf_SetU8(t, (U8)f - (f<0 && fr!=0));
290 U32 swf_GetU30(TAG*tag)
296 U8 b = swf_GetU8(tag);
300 if(!(b&128) || shift>=32)
303 /*int nr2= swf_SetU30(0, s);
305 printf("Unsigned value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
310 int swf_SetU30(TAG*tag, U32 u)
315 swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
322 void swf_SetABCU32(TAG*tag, U32 u)
325 swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
329 U32 swf_GetABCU32(TAG*tag)
331 return swf_GetU30(tag);
333 void swf_SetABCS32(TAG*tag, S32 v)
335 swf_SetABCU32(tag, v);
337 S32 swf_GetABCS32(TAG*tag)
339 return swf_GetABCU32(tag);
344 /*The AVM2 spec is just plain wrong, claiming that S32 values are sign
345 extended. They're not.
346 This wastes up to 4 bytes for every negative value. */
348 void swf_SetABCS32(TAG*tag, S32 s)
350 printf("write S32: %d\n", s);
352 U8 sign = s<0?0x40:0;
358 if(s==neg && vsign==sign) {
359 /* if the value we now write has the same sign as s
360 and all the remaining bits are equal to the sign of s
363 printf("put %02x\n", val);
366 swf_SetU8(tag, 0x80 | val);
367 printf("put %02x\n", 0x80|val);
371 int swf_GetS30(TAG*tag)
377 U8 b = swf_GetU8(tag);
379 nt i,m=t->len>10?10:t->len;
381 fprintf(stderr, "%02x ", t->data[i]);
383 fprintf(stderr, "\n");
386 if(!(b&128) || shift>=32) {
389 s|=0xffffffff<<shift;
394 /* It's not uncommon for other applications (Flex for all negative numbers, and
395 Flash for -1) to generate a lot more bytes than would be necessary.
396 int nr2= swf_SetS30(0, s);
398 printf("Signed value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
404 int swf_SetU30String(TAG*tag, const char*str, int l)
407 len+=swf_SetU30(tag, l);
409 swf_SetBlock(tag, (void*)str, l);
413 float swf_GetF16(TAG * t)
415 U16 f1 = swf_GetU16(t);
416 if(!(f1&0x3ff)) return 0.0;
420 /* gcc 4.1.2 seems to require a union here. *(float*)u doesn't work */
426 U16 e = (f1>>10)&0x1f;
428 /* find highest bit in mantissa */
438 f2.u = (f1&0x8000)<<16; //sign
439 f2.u |= e<<23; //exponent
440 f2.u |= m<<13; //mantissa
444 void swf_SetF16(TAG * t, float f)
452 U16 result = (v.u>>16)&0x8000; //sign
453 int exp = ((v.u>>23)&0xff)-0x7f+0x10;
454 U16 m = (v.u>>13)&0x3ff;
455 //fprintf(stderr, "%f: %04x sign, %d exp, %04x mantissa\n", f, result, exp, m);
457 // underflow (clamp to 0.0)
461 // partial underflow- strip some bits
467 fprintf(stderr, "Exponent overflow in FLOAT16 encoding\n");
474 swf_SetU16(t, result);
477 float F16toFloat(U16 x)
484 return swf_GetF16(&t);
487 float floatToF16(float f)
499 double swf_GetD64(TAG*tag)
501 /* FIXME: this is not big-endian compatible */
502 double value = *(double*)&tag->data[tag->pos];
507 int swf_SetD64(TAG*tag, double v)
509 /* FIXME: this is not big-endian compatible */
510 swf_SetU32(tag, ((U32*)&v)[0]);
511 swf_SetU32(tag, ((U32*)&v)[1]);
514 int swf_GetU24(TAG*tag)
516 int b1 = swf_GetU8(tag);
517 int b2 = swf_GetU8(tag);
518 int b3 = swf_GetU8(tag);
519 return b3<<16|b2<<8|b1;
521 int swf_GetS24(TAG*tag)
523 int b1 = swf_GetU8(tag);
524 int b2 = swf_GetU8(tag);
525 int b3 = swf_GetU8(tag);
527 return -1-((b3<<16|b2<<8|b1)^0xffffff);
529 return b3<<16|b2<<8|b1;
532 int swf_SetU24(TAG*tag, U32 v)
536 fprintf(stderr, "Error: Overflow in swf_SetU24()\n");
538 swf_SetU8(tag, v>>8);
539 swf_SetU8(tag, v>>16);
543 int swf_SetS24(TAG*tag, U32 v)
547 return swf_SetU24(tag, v);
548 if((v&0xff000000)!=0xff000000) {
549 fprintf(stderr, "Error: Overflow in swf_SetS24()\n");
552 swf_SetU8(tag, v>>8);
553 swf_SetU8(tag, v>>16);
559 int swf_SetRGB(TAG * t,RGBA * col)
562 { swf_SetU8(t,col->r);
565 } else swf_SetBlock(t,NULL,3);
568 void swf_GetRGB(TAG * t, RGBA * col)
573 col->r = swf_GetU8(t);
574 col->g = swf_GetU8(t);
575 col->b = swf_GetU8(t);
579 int swf_SetRGBA(TAG * t,RGBA * col)
582 { swf_SetU8(t,col->r);
586 } else swf_SetBlock(t,NULL,4);
589 void swf_GetRGBA(TAG * t, RGBA * col)
594 col->r = swf_GetU8(t);
595 col->g = swf_GetU8(t);
596 col->b = swf_GetU8(t);
597 col->a = swf_GetU8(t);
600 void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
604 memset(gradient, 0, sizeof(GRADIENT));
607 U8 num = swf_GetU8(tag) & 15;
610 gradient->rgba = (RGBA*)rfx_calloc(sizeof(RGBA)*gradient->num);
611 gradient->ratios = (U8*)rfx_calloc(sizeof(gradient->ratios[0])*gradient->num);
615 U8 ratio = swf_GetU8(tag);
618 swf_GetRGB(tag, &color);
620 swf_GetRGBA(tag, &color);
622 gradient->ratios[t] = ratio;
623 gradient->rgba[t] = color;
628 void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
632 memset(gradient, 0, sizeof(GRADIENT));
635 swf_SetU8(tag, gradient->num);
636 for(t=0; t<8 && t<gradient->num; t++)
638 swf_SetU8(tag, gradient->ratios[t]);
640 swf_SetRGB(tag, &gradient->rgba[t]);
642 swf_SetRGBA(tag, &gradient->rgba[t]);
646 void swf_FreeGradient(GRADIENT* gradient)
649 rfx_free(gradient->ratios);
651 rfx_free(gradient->rgba);
652 memset(gradient, 0, sizeof(GRADIENT));
655 int swf_CountUBits(U32 v,int nbits)
658 if(v == 0x00000000) n = 0;
664 return (n>nbits)?n:nbits;
667 int swf_CountBits(U32 v,int nbits)
671 { if(v == 0xffffffff) n = 1;
679 { if(v == 0x00000000) n = 0;
686 return (n>nbits)?n:nbits;
689 int swf_GetRect(TAG * t,SRECT * r)
692 if(!t) {r->xmin=r->xmax=r->ymin=r->ymax=0;return 0;}
694 nbits = (int) swf_GetBits(t,5);
695 r->xmin = swf_GetSBits(t,nbits);
696 r->xmax = swf_GetSBits(t,nbits);
697 r->ymin = swf_GetSBits(t,nbits);
698 r->ymax = swf_GetSBits(t,nbits);
702 int reader_GetRect(reader_t*reader,SRECT * r)
706 nbits = (int) reader_GetBits(reader,5);
707 r->xmin = reader_GetSBits(reader,nbits);
708 r->xmax = reader_GetSBits(reader,nbits);
709 r->ymin = reader_GetSBits(reader,nbits);
710 r->ymax = reader_GetSBits(reader,nbits);
714 int swf_SetRect(TAG * t,SRECT * r)
717 nbits = swf_CountBits(r->xmin,0);
718 nbits = swf_CountBits(r->xmax,nbits);
719 nbits = swf_CountBits(r->ymin,nbits);
720 nbits = swf_CountBits(r->ymax,nbits);
723 fprintf(stderr, "rfxswf: Warning: num_bits overflow in swf_SetRect\n");
728 swf_SetBits(t,nbits,5);
729 swf_SetBits(t,r->xmin,nbits);
730 swf_SetBits(t,r->xmax,nbits);
731 swf_SetBits(t,r->ymin,nbits);
732 swf_SetBits(t,r->ymax,nbits);
737 SRECT swf_ClipRect(SRECT border, SRECT r)
739 if(r.xmax > border.xmax) r.xmax = border.xmax;
740 if(r.ymax > border.ymax) r.ymax = border.ymax;
741 if(r.xmax < border.xmin) r.xmax = border.xmin;
742 if(r.ymax < border.ymin) r.ymax = border.ymin;
744 if(r.xmin > border.xmax) r.xmin = border.xmax;
745 if(r.ymin > border.ymax) r.ymin = border.ymax;
746 if(r.xmin < border.xmin) r.xmin = border.xmin;
747 if(r.ymin < border.ymin) r.ymin = border.ymin;
751 void swf_ExpandRect(SRECT*src, SPOINT add)
753 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
758 if((add.x|add.y) == 0) src->xmax++; //make sure the bbox is not NULL anymore
761 if(add.x < src->xmin)
763 if(add.x > src->xmax)
765 if(add.y < src->ymin)
767 if(add.y > src->ymax)
770 void swf_ExpandRect2(SRECT*src, SRECT*add)
772 if((add->xmin | add->ymin | add->xmax | add->ymax)==0)
774 if((src->xmin | src->ymin | src->xmax | src->ymax)==0)
776 if(add->xmin < src->xmin)
777 src->xmin = add->xmin;
778 if(add->ymin < src->ymin)
779 src->ymin = add->ymin;
780 if(add->xmax > src->xmax)
781 src->xmax = add->xmax;
782 if(add->ymax > src->ymax)
783 src->ymax = add->ymax;
785 void swf_ExpandRect3(SRECT*src, SPOINT center, int radius)
787 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
788 src->xmin = center.x-radius;
789 src->ymin = center.y-radius;
790 src->xmax = center.x+radius;
791 src->ymax = center.y+radius;
792 if((center.x|center.y|radius) == 0) src->xmax++; //make sure the bbox is not NULL anymore
795 if(center.x - radius < src->xmin)
796 src->xmin = center.x - radius;
797 if(center.x + radius > src->xmax)
798 src->xmax = center.x + radius;
799 if(center.y - radius < src->ymin)
800 src->ymin = center.y - radius;
801 if(center.y + radius > src->ymax)
802 src->ymax = center.y + radius;
804 SPOINT swf_TurnPoint(SPOINT p, MATRIX* m)
807 r.x = (int)(m->sx*(1/65536.0)*p.x + m->r1*(1/65536.0)*p.y + 0.5) + m->tx;
808 r.y = (int)(m->r0*(1/65536.0)*p.x + m->sy*(1/65536.0)*p.y + 0.5) + m->ty;
811 SRECT swf_TurnRect(SRECT r, MATRIX* m)
814 SPOINT p1,p2,p3,p4,pp1,pp2,pp3,pp4;
817 p1.x = r.xmin;p1.y = r.ymin;
818 p2.x = r.xmax;p2.y = r.ymin;
819 p3.x = r.xmin;p3.y = r.ymax;
820 p4.x = r.xmax;p4.y = r.ymax;
821 pp1 = swf_TurnPoint(p1, m);
822 pp2 = swf_TurnPoint(p2, m);
823 pp3 = swf_TurnPoint(p3, m);
824 pp4 = swf_TurnPoint(p4, m);
825 g.xmin = g.xmax = pp1.x;
826 g.ymin = g.ymax = pp1.y;
827 swf_ExpandRect(&g, pp2);
828 swf_ExpandRect(&g, pp3);
829 swf_ExpandRect(&g, pp4);
834 int swf_GetMatrix(TAG * t,MATRIX * m)
841 { m->sx = m->sy = 0x10000;
847 swf_ResetReadBits(t);
849 if (swf_GetBits(t,1))
850 { nbits = swf_GetBits(t,5);
851 m->sx = swf_GetSBits(t,nbits);
852 m->sy = swf_GetSBits(t,nbits);
854 else m->sx = m->sy = 0x10000;
856 if (swf_GetBits(t,1))
857 { nbits = swf_GetBits(t,5);
858 m->r0 = swf_GetSBits(t,nbits);
859 m->r1 = swf_GetSBits(t,nbits);
861 else m->r0 = m->r1 = 0x0;
863 nbits = swf_GetBits(t,5);
864 m->tx = swf_GetSBits(t,nbits);
865 m->ty = swf_GetSBits(t,nbits);
870 int swf_SetMatrix(TAG * t,MATRIX * m)
876 ma.sx = ma.sy = 0x10000;
881 swf_ResetWriteBits(t);
883 if ((m->sx==0x10000)&&(m->sy==0x10000)) swf_SetBits(t,0,1);
885 { swf_SetBits(t,1,1);
886 nbits = swf_CountBits(m->sx,0);
887 nbits = swf_CountBits(m->sy,nbits);
889 /* TODO: happens on AMD64 systems for normal values? */
891 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
895 swf_SetBits(t,nbits,5);
896 swf_SetBits(t,m->sx,nbits);
897 swf_SetBits(t,m->sy,nbits);
900 if ((!m->r0)&&(!m->r1)) swf_SetBits(t,0,1);
902 { swf_SetBits(t,1,1);
903 nbits = swf_CountBits(m->r0,0);
904 nbits = swf_CountBits(m->r1,nbits);
907 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
911 swf_SetBits(t,nbits,5);
912 swf_SetBits(t,m->r0,nbits);
913 swf_SetBits(t,m->r1,nbits);
916 nbits = swf_CountBits(m->tx,0);
917 nbits = swf_CountBits(m->ty,nbits);
920 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
924 swf_SetBits(t,nbits,5);
925 swf_SetBits(t,m->tx,nbits);
926 swf_SetBits(t,m->ty,nbits);
931 int swf_GetCXForm(TAG * t,CXFORM * cx,U8 alpha)
939 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
940 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
944 swf_ResetReadBits(t);
945 hasadd = swf_GetBits(t,1);
946 hasmul = swf_GetBits(t,1);
947 nbits = swf_GetBits(t,4);
950 { cx->r0 = (S16)swf_GetSBits(t,nbits);
951 cx->g0 = (S16)swf_GetSBits(t,nbits);
952 cx->b0 = (S16)swf_GetSBits(t,nbits);
954 cx->a0 = (S16)swf_GetSBits(t,nbits);
958 { cx->r1 = (S16)swf_GetSBits(t,nbits);
959 cx->g1 = (S16)swf_GetSBits(t,nbits);
960 cx->b1 = (S16)swf_GetSBits(t,nbits);
962 cx->a1 = (S16)swf_GetSBits(t,nbits);
968 int swf_SetCXForm(TAG * t,CXFORM * cx,U8 alpha)
976 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
977 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
987 hasmul = (cx->a0!=256)||(cx->r0!=256)||(cx->g0!=256)||(cx->b0!=256);
988 hasadd = cx->a1|cx->r1|cx->g1|cx->b1;
991 { if (alpha) nbits = swf_CountBits((S32)cx->a0,nbits);
992 nbits = swf_CountBits((S32)cx->r0,nbits);
993 nbits = swf_CountBits((S32)cx->g0,nbits);
994 nbits = swf_CountBits((S32)cx->b0,nbits);
998 { if (alpha) nbits = swf_CountBits((S32)cx->a1,nbits);
999 nbits = swf_CountBits((S32)cx->r1,nbits);
1000 nbits = swf_CountBits((S32)cx->g1,nbits);
1001 nbits = swf_CountBits((S32)cx->b1,nbits);
1004 swf_ResetWriteBits(t);
1005 swf_SetBits(t,hasadd?1:0,1);
1006 swf_SetBits(t,hasmul?1:0,1);
1007 swf_SetBits(t,nbits,4);
1010 { swf_SetBits(t,cx->r0,nbits);
1011 swf_SetBits(t,cx->g0,nbits);
1012 swf_SetBits(t,cx->b0,nbits);
1013 if (alpha) swf_SetBits(t,cx->a0,nbits);
1017 { swf_SetBits(t,cx->r1,nbits);
1018 swf_SetBits(t,cx->g1,nbits);
1019 swf_SetBits(t,cx->b1,nbits);
1020 if (alpha) swf_SetBits(t,cx->a1,nbits);
1026 //int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
1027 //int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
1029 void swf_SetPassword(TAG * t, const char * password)
1031 /* WARNING: crypt_md5 is not reentrant */
1035 #if defined(HAVE_LRAND48) && defined(HAVE_SRAND48) && defined(HAVE_TIME_H) && defined(HAVE_TIME)
1037 salt[0] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
1038 salt[1] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
1042 fprintf(stderr, "rfxswf: Warning- no usable random generator found\n");
1043 fprintf(stderr, "Your password will be vulnerable to dictionary attacks\n");
1047 md5string = crypt_md5(password, salt);
1050 swf_SetString(t, md5string);
1053 void swf_SetString(TAG*t, const char* s)
1058 swf_SetBlock(t,(U8*)s,strlen(s)+1);
1062 int swf_VerifyPassword(TAG * t, const char * password)
1064 char*md5string1, *md5string2;
1069 if(t->len >= 5 && t->pos==0 &&
1074 printf("%d %d %d %d\n", t->len, t->pos, t->data[0], t->data[1]);
1077 md5string1 = swf_GetString(t);
1079 if(strncmp(md5string1, "$1$",3 )) {
1080 fprintf(stderr, "rfxswf: no salt in pw string\n");
1083 x = strchr(md5string1+3, '$');
1085 fprintf(stderr, "rfxswf: invalid salt format in pw string\n");
1088 n = x-(md5string1+3);
1089 salt = (char*)rfx_alloc(n+1);
1090 memcpy(salt, md5string1+3, n);
1093 md5string2 = crypt_md5(password, salt);
1095 if(strcmp(md5string1, md5string2) != 0)
1100 // Tag List Manipulating Functions
1102 TAG * swf_InsertTag(TAG * after,U16 id)
1105 t = (TAG *)rfx_calloc(sizeof(TAG));
1111 t->next = after->next;
1113 if (t->next) t->next->prev = t;
1118 TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)
1121 t = (TAG *)rfx_calloc(sizeof(TAG));
1127 t->prev = before->prev;
1129 if (t->prev) t->prev->next = t;
1131 if(swf && swf->firstTag == before) {
1137 void swf_ClearTag(TAG * t)
1139 if (t->data) rfx_free(t->data);
1148 void swf_ResetTag(TAG*tag, U16 id)
1150 tag->len = tag->pos = tag->readBit = tag->writeBit = 0;
1154 TAG* swf_CopyTag(TAG*tag, TAG*to_copy)
1156 tag = swf_InsertTag(tag, to_copy->id);
1157 swf_SetBlock(tag, to_copy->data, to_copy->len);
1161 TAG* swf_DeleteTag(SWF*swf, TAG * t)
1165 if (swf && swf->firstTag==t)
1166 swf->firstTag = t->next;
1167 if (t->prev) t->prev->next = t->next;
1168 if (t->next) t->next->prev = t->prev;
1170 if (t->data) rfx_free(t->data);
1175 TAG * swf_ReadTag(reader_t*reader, TAG * prev)
1181 if (reader->read(reader, &raw, 2) !=2 ) return NULL;
1182 raw = LE_16_TO_NATIVE(raw);
1189 len = reader_readU32(reader);
1192 if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
1193 // Sprite handling fix: Flatten sprite tree
1195 t = (TAG *)rfx_calloc(sizeof(TAG));
1201 { t->data = (U8*)rfx_alloc(t->len);
1202 t->memsize = t->len;
1203 if (reader->read(reader, t->data, t->len) != t->len) {
1205 fprintf(stderr, "rfxswf: Warning: Short read (tagid %d). File truncated?\n", t->id);
1207 free(t->data);t->data=0;
1222 int swf_DefineSprite_GetRealSize(TAG * t);
1224 int swf_WriteTag2(writer_t*writer, TAG * t)
1225 // returns tag length in bytes (incl. Header), -1 = Error
1226 // writer = 0 -> no output
1233 len = (t->id==ST_DEFINESPRITE)?swf_DefineSprite_GetRealSize(t):t->len;
1235 short_tag = len<0x3f&&
1236 (t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
1237 t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3);
1242 int oldpos = writer->pos;
1246 { raw[0] = LE_16_TO_NATIVE(len|((t->id&0x3ff)<<6));
1247 if (writer->write(writer,raw,2)!=2)
1250 fprintf(stderr,"WriteTag() failed: Short Header.\n");
1257 raw[0] = LE_16_TO_NATIVE((t->id<<6)|0x3f);
1258 if (writer->write(writer,raw,2)!=2)
1261 fprintf(stderr,"WriteTag() failed: Long Header (1).\n");
1266 writer_writeU32(writer, len);
1270 { if (writer->write(writer,t->data,t->len)!=t->len)
1273 fprintf(stderr,"WriteTag() failed: Data.\n");
1279 else if (t->len) fprintf(stderr,"WriteTag(): Tag Data Error, id=%i\n",t->id);
1283 writer->flush(writer);
1284 printf("TAG %s costs %d bytes\n", swf_TagGetName(t), writer->pos-oldpos);
1288 return t->len+(short_tag?2:6);
1291 int swf_WriteTag(int handle, TAG * t)
1296 return swf_WriteTag2(0, t);
1297 writer_init_filewriter(&writer, handle);
1298 len = swf_WriteTag2(&writer, t);
1299 writer.finish(&writer);
1303 int swf_DefineSprite_GetRealSize(TAG * t)
1304 // Sprite Handling: Helper function to pack DefineSprite-Tag
1306 if(len>4) { // folded sprite
1310 { t = swf_NextTag(t);
1311 if (t && t->id!=ST_DEFINESPRITE) len += swf_WriteTag(-1, t);
1313 } while (t&&(t->id!=ST_END));
1317 void swf_UnFoldSprite(TAG * t)
1322 U16 spriteid,spriteframes;
1324 if(t->id!=ST_DEFINESPRITE)
1326 if(t->len<=4) // not folded
1331 spriteid = swf_GetU16(t); //id
1332 spriteframes = swf_GetU16(t); //frames
1339 tmp = swf_GetU16(t);
1344 if(id == ST_DEFINESPRITE && len<=4)
1348 len = swf_GetU32(t);
1349 it = swf_InsertTag(next, id);
1354 { it->data = (U8*)rfx_alloc(it->len);
1355 it->memsize = it->len;
1356 swf_GetBlock(t, it->data, it->len);
1363 rfx_free(t->data); t->data = 0;
1364 t->memsize = t->len = t->pos = 0;
1366 swf_SetU16(t, spriteid);
1367 swf_SetU16(t, spriteframes);
1370 void swf_FoldSprite(TAG * t)
1375 if(t->id!=ST_DEFINESPRITE)
1379 fprintf(stderr, "Error: Sprite has no ID!");
1384 /* sprite is already folded */
1391 t->len = t->pos = t->memsize = 0;
1396 t = swf_NextTag(sprtag);
1401 if(t->id==ST_SHOWFRAME) frames++;
1402 if(t->id == ST_DEFINESPRITE && t->len<=4)
1407 } while(t && level);
1409 fprintf(stderr, "rfxswf error: sprite doesn't end(1)\n");
1411 swf_SetU16(sprtag, id);
1412 swf_SetU16(sprtag, frames);
1414 t = swf_NextTag(sprtag);
1420 (t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
1421 t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3)
1423 swf_SetU16(sprtag,t->len|(t->id<<6));
1425 swf_SetU16(sprtag,0x3f|(t->id<<6));
1426 swf_SetU32(sprtag,t->len);
1429 swf_SetBlock(sprtag,t->data, t->len);
1431 if(t->id == ST_DEFINESPRITE && t->len<=4)
1436 swf_DeleteTag(0, tmp);
1440 fprintf(stderr, "rfxswf error: sprite doesn't end(2)\n");
1442 // sprtag->next = t;
1443 // t->prev = sprtag;
1446 int swf_IsFolded(TAG * t)
1448 return (t->id == ST_DEFINESPRITE && t->len>4);
1451 void swf_FoldAll(SWF*swf)
1453 TAG*tag = swf->firstTag;
1454 //swf_DumpSWF(stdout, swf);
1456 if(tag->id == ST_DEFINESPRITE) {
1457 swf_FoldSprite(tag);
1458 //swf_DumpSWF(stdout, swf);
1460 tag = swf_NextTag(tag);
1464 void swf_UnFoldAll(SWF*swf)
1466 TAG*tag = swf->firstTag;
1468 if(tag->id == ST_DEFINESPRITE)
1469 swf_UnFoldSprite(tag);
1474 void swf_OptimizeTagOrder(SWF*swf)
1481 /* at the moment, we don't actually do optimizing,
1482 only fixing of non-spec-conformant things like
1489 tag = swf->firstTag;
1492 if(tag->id == ST_DEFINESPRITE) {
1494 /* ??? all sprites are supposed to be unfolded */
1495 fprintf(stderr, "librfxswf error - internal error in OptimizeTagOrder/UnfoldAll\n");
1505 /* move non-sprite tags out of sprite */
1506 if(!swf_isAllowedSpriteTag(tag) || level>=2) {
1507 /* remove tag from current position */
1508 tag->prev->next = tag->next;
1510 tag->next->prev = tag->prev;
1512 /* insert before tag level0 */
1514 tag->prev = level0->prev;
1517 tag->prev->next = tag;
1519 swf->firstTag = tag;
1523 if(tag->id == ST_END) {
1534 int swf_ReadSWF2(reader_t*reader, SWF * swf) // Reads SWF to memory (malloc'ed), returns length or <0 if fails
1536 if (!swf) return -1;
1537 memset(swf,0x00,sizeof(SWF));
1539 { char b[32]; // read Header
1545 if ((len = reader->read(reader ,b,8))<8) return -1;
1547 if (b[0]!='F' && b[0]!='C') return -1;
1548 if (b[1]!='W') return -1;
1549 if (b[2]!='S') return -1;
1550 swf->fileVersion = b[3];
1551 swf->compressed = (b[0]=='C')?1:0;
1552 swf->fileSize = GET32(&b[4]);
1554 if(swf->compressed) {
1555 reader_init_zlibinflate(&zreader, reader);
1558 swf->compressed = 0; // derive from version number from now on
1560 reader_GetRect(reader, &swf->movieSize);
1561 reader->read(reader, &swf->frameRate, 2);
1562 swf->frameRate = LE_16_TO_NATIVE(swf->frameRate);
1563 reader->read(reader, &swf->frameCount, 2);
1564 swf->frameCount = LE_16_TO_NATIVE(swf->frameCount);
1566 /* read tags and connect to list */
1570 t = swf_ReadTag(reader,t);
1571 if(t && t->id == ST_FILEATTRIBUTES) {
1572 swf->fileAttributes = swf_GetU32(t);
1573 swf_ResetReadBits(t);
1576 swf->firstTag = t1.next;
1578 t1.next->prev = NULL;
1584 SWF* swf_OpenSWF(char*filename)
1586 int fi = open(filename, O_RDONLY|O_BINARY);
1588 fprintf(stderr, "Failed to open %s\n", filename);
1591 SWF* swf = rfx_alloc(sizeof(SWF));
1592 swf_ReadSWF(fi, swf);
1597 int swf_ReadSWF(int handle, SWF * swf)
1600 reader_init_filereader(&reader, handle);
1601 return swf_ReadSWF2(&reader, swf);
1604 void swf_ReadABCfile(char*filename, SWF*swf)
1606 memset(swf, 0, sizeof(SWF));
1608 swf->fileAttributes=FILEATTRIBUTE_AS3; //as3
1609 TAG*tag = swf->firstTag = swf_InsertTag(0, ST_RAWABC);
1610 memfile_t*file = memfile_open(filename);
1611 swf_SetBlock(tag, file->data, file->len);
1612 memfile_close(file);
1615 int no_extra_tags = 0;
1617 int WriteExtraTags(SWF*swf, writer_t*writer)
1619 TAG*t = swf->firstTag;
1620 TAG* has_fileattributes=0;
1621 int has_scenedescription=0;
1622 int has_version_8_action=0;
1623 int has_version_9_action=0;
1626 if(t->id == ST_FILEATTRIBUTES)
1627 has_fileattributes = t;
1628 if(t->id == ST_SCENEDESCRIPTION)
1629 has_scenedescription = 1;
1630 if(t->id == ST_DOABC)
1631 has_version_9_action=1;
1632 /* FIXME: this doesn't yet find actionscript in buttons */
1633 if(t->id == ST_DOACTION || t->id == ST_DOINITACTION)
1634 has_version_8_action=1;
1635 if(t->id == ST_PLACEOBJECT2 && t->len && (t->data[0]&0x80))
1636 has_version_8_action=1;
1639 if(has_version_8_action && has_version_9_action) {
1640 fprintf(stderr, "Warning: File contains both flash 8 and flash 9 actionscript\n");
1643 if(swf->fileVersion >= 9) {
1644 if(!has_fileattributes) {
1645 U32 flags = swf->fileAttributes|FILEATTRIBUTE_AS3; // 16 = has symbolclass tag | 8 = actionscript3 | 1 = usenetwork
1646 if(has_version_8_action && !has_version_9_action)
1647 flags &= ~FILEATTRIBUTE_AS3;
1648 TAG*fileattrib = swf_InsertTag(0, ST_FILEATTRIBUTES);
1649 swf_SetU32(fileattrib, flags);
1651 if(swf_WriteTag2(writer, fileattrib)<0)
1654 len += swf_WriteTag(-1,fileattrib);
1656 swf_DeleteTag(0, fileattrib);
1658 if(swf->fileAttributes) {
1659 /* if we're writing a file out again where we might have possible
1660 modified the fileattributes in the header, adjust the tag data */
1661 TAG*tt = swf_CopyTag(0,has_fileattributes);
1662 U32 flags = swf_GetU32(tt) | swf->fileAttributes;
1663 swf_ResetTag(tt, tt->id);
1664 swf_SetU32(tt, flags);
1665 if(swf_WriteTag2(writer, has_fileattributes)<0) return -1;
1666 swf_DeleteTag(0, tt);
1668 if(swf_WriteTag2(writer, has_fileattributes)<0)
1672 if(0 && !has_scenedescription) {
1673 TAG*scene = swf_InsertTag(0, ST_SCENEDESCRIPTION);
1674 swf_SetU16(scene, 1);
1675 swf_SetString(scene, "Scene 1");
1676 swf_SetU8(scene, 0);
1678 if(swf_WriteTag2(writer, scene)<0)
1681 len += swf_WriteTag(-1,scene);
1683 swf_DeleteTag(0, scene);
1689 int swf_WriteSWF2(writer_t*writer, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1697 writer_t*original_writer = writer;
1698 int writer_lastpos = 0;
1700 if (!swf) return -1;
1701 if (!writer) return -1; // the caller should provide a nullwriter, not 0, for querying SWF size
1703 if(original_writer) writer_lastpos = original_writer->pos;
1705 // Count Frames + File Size
1711 if(swf->firstTag && !no_extra_tags) {
1712 len += WriteExtraTags(swf, 0);
1715 len += swf_WriteTag(-1,t);
1716 if(t->id == ST_DEFINESPRITE && !swf_IsFolded(t)) inSprite++;
1717 else if(t->id == ST_END && inSprite) inSprite--;
1718 else if(t->id == ST_END && !inSprite) {
1719 if(t->prev && t->prev->id!=ST_SHOWFRAME)
1722 else if(t->id == ST_SHOWFRAME && !inSprite) frameCount++;
1730 memset(&t1,0x00,sizeof(TAG));
1734 { // measure header file size
1737 memset(&t2,0x00,sizeof(TAG));
1740 swf_SetRect(&t2, &swf->movieSize);
1741 swf_SetU16(&t2, swf->frameRate);
1742 swf_SetU16(&t2, swf->frameCount);
1743 l = swf_GetTagLen(&t2)+8;
1745 if(swf->compressed == 8) {
1750 if(len) {// don't touch headers without tags
1751 swf->fileSize = fileSize;
1752 swf->frameCount = frameCount;
1755 if(swf->compressed != 8) {
1756 /* compressed flag set to 8 means "skip first 8
1757 header bytes". This is necessary if the caller wants to
1758 create compressed SWFs himself .
1759 It also means that we don't initialize our own zlib
1760 writer, but assume the caller provided one.
1762 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
1764 writer->write(writer, id, 3);
1767 writer->write(writer, id, 3);
1770 writer->write(writer, &swf->fileVersion, 1);
1771 PUT32(b4, swf->fileSize);
1772 writer->write(writer, b4, 4);
1774 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
1775 writer_init_zlibdeflate(&zwriter, writer);
1780 swf_SetRect(&t1,&swf->movieSize);
1781 swf_SetU16(&t1,swf->frameRate);
1782 swf_SetU16(&t1,swf->frameCount);
1784 ret = writer->write(writer,b,swf_GetTagLen(&t1));
1785 if (ret!=swf_GetTagLen(&t1))
1788 fprintf(stderr, "ret:%d\n",ret);
1790 fprintf(stderr,"WriteSWF() failed: Header.\n");
1795 if(swf->firstTag && !no_extra_tags) {
1796 WriteExtraTags(swf, writer);
1801 if(no_extra_tags || t->id != ST_FILEATTRIBUTES) {
1802 if(swf_WriteTag2(writer, t)<0)
1807 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6) || swf->compressed==8) {
1808 if(swf->compressed != 8) {
1809 zwriter.finish(&zwriter);
1810 return original_writer->pos - writer_lastpos;
1812 return (int)fileSize;
1814 return (int)fileSize;
1819 int swf_SaveSWF(SWF * swf, char*filename)
1821 int fi = open(filename, O_BINARY|O_RDWR|O_TRUNC|O_CREAT, 0777);
1826 if(swf_WriteSWF(fi, swf)<0) {
1827 fprintf(stderr, "Unable to write output file: %s\n", filename);
1834 int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1840 writer_init_nullwriter(&writer);
1841 len = swf_WriteSWF2(&writer, swf);
1844 writer_init_filewriter(&writer, handle);
1845 len = swf_WriteSWF2(&writer, swf);
1846 writer.finish(&writer);
1850 int swf_WriteHeader2(writer_t*writer,SWF * swf)
1853 memcpy(&myswf,swf,sizeof(SWF));
1855 return swf_WriteSWF2(writer, &myswf);
1858 int swf_WriteHeader(int handle,SWF * swf)
1861 memcpy(&myswf,swf,sizeof(SWF));
1863 return swf_WriteSWF(handle, &myswf);
1866 int swf_WriteCGI(SWF * swf)
1870 len = swf_WriteSWF(-1,swf);
1872 if (len<0) return -1;
1874 sprintf(s,"Content-type: application/x-shockwave-flash\n"
1875 "Accept-Ranges: bytes\n"
1876 "Content-Length: %d\n"
1877 "Expires: Thu, 13 Apr 2000 23:59:59 GMT\n"
1880 write(fileno(stdout),s,strlen(s));
1881 return swf_WriteSWF(fileno(stdout),swf);
1884 SWF* swf_CopySWF(SWF*swf)
1886 SWF*nswf = (SWF*)rfx_alloc(sizeof(SWF));
1888 memcpy(nswf, swf, sizeof(SWF));
1890 tag = swf->firstTag;
1893 ntag = swf_CopyTag(ntag, tag);
1895 nswf->firstTag = ntag;
1901 void swf_FreeTags(SWF * swf) // Frees all malloc'ed memory for tags
1902 { TAG * t = swf->firstTag;
1905 { TAG * tnew = t->next;
1906 if (t->data) rfx_free(t->data);
1913 // include advanced functions
1915 //#include "modules/swfdump.c"
1916 //#include "modules/swfshape.c"
1917 //#include "modules/swftext.c"
1918 //#include "modules/swffont.c"
1919 //#include "modules/swfobject.c"
1920 //#include "modules/swfbutton.c"
1921 //#include "modules/swftools.c"
1922 //#include "modules/swfcgi.c"
1923 //#include "modules/swfbits.c"
1924 //#include "modules/swfaction.c"
1925 //#include "modules/swfabc.c"
1926 //#include "modules/swfsound.c"
1927 //#include "modules/swfdraw.c"
1928 //#include "modules/swfrender.c"
1929 //#include "modules/swffilter.c"