-/* rfxswf.c\r
-\r
- Library for creating and reading SWF files or parts of it.\r
- There's a module directory which provides some extended functionality.\r
- Most modules are included at the bottom of this file.\r
-\r
- Part of the swftools package.\r
-\r
- Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>\r
- \r
- This file is distributed under the GPL, see file COPYING for details \r
-\r
-*/\r
-\r
-#include "rfxswf.h"\r
-\r
-#include <jpeglib.h>\r
-#define _JPEGLIB_INCLUDED_\r
-\r
-// Win32 support may be broken since it was only tested in an older version for Watcom C\r
-#ifdef __NT__\r
-# include <io.h>\r
-# include <malloc.h>\r
-# include <string.h>\r
-# ifdef DEBUG_RFXSWF\r
-# include <stdio.h>\r
-# endif\r
-#else\r
-#endif\r
-\r
-// internal constants\r
-\r
-#define MALLOC_SIZE 128\r
-#define INSERT_RFX_TAG\r
-\r
-#define MEMSIZE(l) (((l/MALLOC_SIZE)+1)*MALLOC_SIZE)\r
-\r
-// inline wrapper functions\r
-\r
-LPTAG NextTag(LPTAG t) { return t->next; }\r
-LPTAG PrevTag(LPTAG t) { return t->prev; }\r
-int GetFrameNo(LPTAG t) { return t->frame; }\r
-U16 GetTagID(LPTAG t) { return t->id; }\r
-U32 GetDataSize(LPTAG t) { return t->len; }\r
-U8* GetDataSizePtr(LPTAG t) { return &(t->data[t->len]); }\r
-U32 GetTagPos(LPTAG t) { return t->pos; }\r
-\r
-// Basic Data Access Functions\r
-\r
-#define ResetBitmask(tag) if (tag->bitmask) { tag->pos++; tag->bitmask = 0; }\r
-#define ResetBitcount(tag) if (tag->bitcount) { tag->bitcount = 0; }\r
-\r
-// for future purpose: avoid high level lib functions to change tagpos/bitcount\r
-\r
-#define SaveTagPos(tag)\r
-#define RestoreTagPos(tag)\r
-\r
-void SetTagPos(LPTAG t,U32 pos)\r
-{ ResetBitmask(t);\r
- if (pos<=t->len) t->pos = pos;\r
- #ifdef DEBUG_RFXSWF\r
- else fprintf(stderr,"SetTagPos() out of bounds: TagID = %i\n",t->id);\r
- #endif\r
-}\r
-\r
-U8 GetU8(LPTAG t)\r
-{ ResetBitmask(t);\r
- #ifdef DEBUG_RFXSWF\r
- if (t->pos>=t->len) \r
- { fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);\r
- return 0;\r
- }\r
- #endif\r
- return t->data[t->pos++];\r
-}\r
-\r
-U16 GetU16(LPTAG t)\r
-{ U16 res;\r
- ResetBitmask(t);\r
- #ifdef DEBUG_RFXSWF\r
- if (t->pos>(t->len-2)) \r
- { fprintf(stderr,"GetU16() out of bounds: TagID = %i\n",t->id);\r
- return 0;\r
- }\r
- #endif\r
- res = t->data[t->pos] | (t->data[t->pos+1]<<8);\r
- t->pos+=2;\r
- return res;\r
-}\r
-\r
-U32 GetU32(LPTAG t)\r
-{ U32 res;\r
- ResetBitmask(t);\r
- #ifdef DEBUG_RFXSWF\r
- if (t->pos>(t->len-4)) \r
- { fprintf(stderr,"GetU32() out of bounds: TagID = %i\n",t->id);\r
- return 0;\r
- }\r
- #endif\r
- res = t->data[t->pos] | (t->data[t->pos+1]<<8) | \r
- (t->data[t->pos+2]<<16) | (t->data[t->pos+3]<<24);\r
- t->pos+=4;\r
- return res;\r
-}\r
-\r
-int GetBlock(LPTAG t,U8 * b,int l)\r
-// returns number of bytes written (<=l)\r
-// b = NULL -> skip data\r
-{ ResetBitmask(t);\r
- if ((t->len-t->pos)<l) l=t->len-t->pos;\r
- if (b && l) memcpy(b,&t->data[t->pos],l);\r
- t->pos+=l;\r
- return l;\r
-}\r
-\r
-int SetBlock(LPTAG t,U8 * b,int l)\r
-// Appends Block to the end of Tagdata, returns size\r
-{ U32 newlen = t->len + l;\r
- ResetBitcount(t);\r
- if (newlen>t->memsize)\r
- { U32 newmem = MEMSIZE(newlen); \r
- U8 * newdata = (U8*)((t->data)?realloc(t->data,newmem):malloc(newmem));\r
- if (!newdata)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"Fatal Error: malloc()/realloc() failed.\n");\r
- #endif\r
- return 0;\r
- }\r
- t->memsize = newmem;\r
- t->data = newdata;\r
- }\r
- if (b) memcpy(&t->data[t->len],b,l);\r
- else memset(&t->data[t->len],0x00,l);\r
- t->len+=l;\r
- return l;\r
-}\r
-\r
-int SetU8(LPTAG t,U8 v)\r
-{ ResetBitcount(t);\r
- if ((t->len+1)>t->memsize) return (SetBlock(t,&v,1)==1)?0:-1;\r
- t->data[t->len++] = v;\r
- return 0;\r
-}\r
-\r
-int SetU16(LPTAG t,U16 v)\r
-{ U8 a[2];\r
- a[0] = v&0xff;\r
- a[1] = v>>8;\r
- \r
- ResetBitcount(t);\r
- if ((t->len+2)>t->memsize) return (SetBlock(t,a,2)==2)?0:-1;\r
- t->data[t->len++] = a[0];\r
- t->data[t->len++] = a[1];\r
- return 0;\r
-}\r
-\r
-int SetU32(LPTAG t,U32 v)\r
-{ U8 a[4];\r
- a[0] = v&0xff; // to ensure correct handling of non-intel byteorder\r
- a[1] = (v>>8)&0xff;\r
- a[2] = (v>>16)&0xff;\r
- a[3] = (v>>24)&0xff;\r
- \r
- ResetBitcount(t);\r
- if ((t->len+4)>t->memsize) return (SetBlock(t,a,4)==4)?0:-1;\r
- t->data[t->len++] = a[0];\r
- t->data[t->len++] = a[1];\r
- t->data[t->len++] = a[2];\r
- t->data[t->len++] = a[3];\r
- return 0;\r
-}\r
-\r
-U32 GetBits(LPTAG t,int nbits)\r
-{ U32 res = 0;\r
- if (!nbits) return 0;\r
- if (!t->bitmask) t->bitmask = 0x80;\r
- while (nbits)\r
- { res<<=1;\r
- if (t->data[t->pos]&t->bitmask) res|=1;\r
- t->bitmask>>=1;\r
- nbits--;\r
- if (!t->bitmask)\r
- { if (nbits) t->bitmask = 0x80;\r
- #ifdef DEBUG_RFXSWF\r
- if (t->pos>=t->len) \r
- { fprintf(stderr,"GetBits() out of bounds: TagID = %i\n",t->id);\r
- return res;\r
- }\r
- #endif\r
- t->pos++;\r
- }\r
- }\r
- return res;\r
-}\r
-\r
-S32 GetSBits(LPTAG t,int nbits)\r
-{ U32 res = GetBits(t,nbits);\r
- if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits); \r
- return (S32)res;\r
-}\r
-\r
-int SetBits(LPTAG t,U32 v,int nbits)\r
-{ U32 bm = 1<<(nbits-1);\r
-\r
- while (nbits)\r
- { if (!t->bitcount)\r
- { if (FAILED(SetU8(t,0))) return -1;\r
- t->bitcount = 0x80;\r
- }\r
- if (v&bm) t->data[t->len-1] |= t->bitcount;\r
- bm>>=1;\r
- t->bitcount>>=1;\r
- nbits--;\r
- }\r
- return 0;\r
-}\r
-\r
-// Advanced Data Access Functions\r
-\r
-int SetRGB(LPTAG t,LPRGBA col)\r
-{ if (!t) return -1;\r
- if (col)\r
- { SetU8(t,col->r);\r
- SetU8(t,col->g);\r
- SetU8(t,col->b);\r
- } else SetBlock(t,NULL,3);\r
- return 0;\r
-}\r
-\r
-int SetRGBA(LPTAG t,LPRGBA col)\r
-{ if (!t) return -1;\r
- if (col)\r
- { SetU8(t,col->r);\r
- SetU8(t,col->g);\r
- SetU8(t,col->b);\r
- SetU8(t,col->a);\r
- } else SetBlock(t,NULL,4);\r
- return 0;\r
-}\r
-\r
-int CountBits(U32 v,int nbits)\r
-{ int n = 33;\r
- U32 m = 0x80000000;\r
- if (!v) n = 0; else\r
- if (v&m)\r
- { while (v&m)\r
- { n--;\r
- m>>=1;\r
- if (!m) break;\r
- } \r
- }\r
- else\r
- { while (!(v&m))\r
- { n--;\r
- m>>=1;\r
- if (!m) break;\r
- } \r
- }\r
- return (n>nbits)?n:nbits;\r
-}\r
-\r
-int GetRect(LPTAG t,LPSRECT r)\r
-{ int nbits;\r
- SRECT dummy;\r
- if (!r) r = &dummy;\r
- nbits = (int) GetBits(t,5);\r
- r->xmin = GetSBits(t,nbits);\r
- r->xmax = GetSBits(t,nbits);\r
- r->ymin = GetSBits(t,nbits);\r
- r->ymax = GetSBits(t,nbits);\r
- return 0;\r
-}\r
-\r
-int SetRect(LPTAG t,LPSRECT r)\r
-{ int nbits;\r
- \r
- nbits = CountBits(r->xmin,0);\r
- nbits = CountBits(r->xmax,nbits);\r
- nbits = CountBits(r->ymin,nbits);\r
- nbits = CountBits(r->ymax,nbits);\r
-\r
- SetBits(t,nbits,5);\r
- SetBits(t,r->xmin,nbits);\r
- SetBits(t,r->xmax,nbits);\r
- SetBits(t,r->ymin,nbits);\r
- SetBits(t,r->ymax,nbits);\r
-\r
- return 0;\r
-}\r
-\r
-int GetMatrix(LPTAG t,LPMATRIX m)\r
-{ MATRIX dummy;\r
- int nbits;\r
- \r
- if (!m) m = &dummy;\r
- \r
- if (!t)\r
- { m->sx = m->sy = 0x10000;\r
- m->r0 = m->r1 = 0;\r
- m->tx = m->ty = 0;\r
- return -1;\r
- }\r
-\r
- ResetBitmask(t);\r
- \r
- if (GetBits(t,1))\r
- { nbits = GetBits(t,5);\r
- m->sx = GetSBits(t,nbits);\r
- m->sy = GetSBits(t,nbits);\r
- }\r
- else m->sx = m->sy = 0x10000;\r
- \r
- if (GetBits(t,1))\r
- { nbits = GetBits(t,5);\r
- m->r0 = GetSBits(t,nbits);\r
- m->r1 = GetSBits(t,nbits);\r
- }\r
- else m->r0 = m->r1 = 0x0;\r
-\r
- nbits = GetBits(t,5);\r
- m->tx = GetSBits(t,nbits);\r
- m->ty = GetSBits(t,nbits);\r
- \r
- return 0;\r
-}\r
-\r
-int SetMatrix(LPTAG t,LPMATRIX m)\r
-{ int nbits;\r
- MATRIX ma;\r
-\r
- if (!m)\r
- { m = &ma;\r
- ma.sx = ma.sy = 0x10000;\r
- ma.r0 = ma.r1 = 0;\r
- ma.tx = ma.ty = 0;\r
- }\r
-\r
- ResetBitcount(t);\r
-\r
- if ((m->sx==0x10000)&&(m->sy==0x10000)) SetBits(t,0,1);\r
- else\r
- { SetBits(t,1,1);\r
- nbits = CountBits(m->sx,0);\r
- nbits = CountBits(m->sy,nbits);\r
- SetBits(t,nbits,5);\r
- SetBits(t,m->sx,nbits);\r
- SetBits(t,m->sy,nbits);\r
- }\r
-\r
- if ((!m->r0)&&(!m->r1)) SetBits(t,0,1);\r
- else\r
- { SetBits(t,1,1);\r
- nbits = CountBits(m->r0,0);\r
- nbits = CountBits(m->r1,nbits);\r
- SetBits(t,nbits,5);\r
- SetBits(t,m->r0,nbits);\r
- SetBits(t,m->r1,nbits);\r
- }\r
-\r
- nbits = CountBits(m->tx,0);\r
- nbits = CountBits(m->ty,nbits);\r
- SetBits(t,nbits,5);\r
- SetBits(t,m->tx,nbits);\r
- SetBits(t,m->ty,nbits);\r
-\r
- return 0;\r
-}\r
-\r
-int GetCXForm(LPTAG t,LPCXFORM cx,U8 alpha) //FIXME: alpha should be type bool\r
-{ CXFORM cxf;\r
- int hasadd;\r
- int hasmul;\r
- int nbits;\r
- \r
- if (!cx) cx = &cxf;\r
- \r
- cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;\r
- cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;\r
-\r
- if (!t) return 0;\r
- \r
- ResetBitmask(t);\r
- hasadd = GetBits(t,1);\r
- hasmul = GetBits(t,1);\r
- nbits = GetBits(t,4);\r
-\r
- if (hasmul)\r
- { cx->r0 = (S16)GetSBits(t,nbits);\r
- cx->g0 = (S16)GetSBits(t,nbits);\r
- cx->b0 = (S16)GetSBits(t,nbits);\r
- if (alpha)\r
- cx->a0 = (S16)GetSBits(t,nbits);\r
- }\r
-\r
- if (hasadd)\r
- { cx->r1 = (S16)GetSBits(t,nbits);\r
- cx->g1 = (S16)GetSBits(t,nbits);\r
- cx->b1 = (S16)GetSBits(t,nbits);\r
- if (alpha)\r
- cx->a1 = (S16)GetSBits(t,nbits);\r
- }\r
- \r
- return 0;\r
-}\r
-\r
-int SetCXForm(LPTAG t,LPCXFORM cx,U8 alpha)\r
-{ CXFORM cxf;\r
- int hasadd;\r
- int hasmul;\r
- int nbits;\r
- \r
- if (!cx)\r
- { cx = &cxf;\r
- cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;\r
- cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;\r
- }\r
-\r
- if (!alpha)\r
- { cx->a0 = 256;\r
- cx->a1 = 0;\r
- }\r
-\r
- nbits = 0;\r
-\r
- hasmul = (cx->a0!=256)||(cx->r0!=256)||(cx->g0!=256)||(cx->b0!=256);\r
- hasadd = cx->a1|cx->r1|cx->g1|cx->b1;\r
-\r
- if (hasmul)\r
- { if (alpha) nbits = CountBits((S32)cx->a0,nbits);\r
- nbits = CountBits((S32)cx->r0,nbits);\r
- nbits = CountBits((S32)cx->g0,nbits);\r
- nbits = CountBits((S32)cx->b0,nbits);\r
- }\r
-\r
- if (hasadd)\r
- { if (alpha) nbits = CountBits((S32)cx->a1,nbits);\r
- nbits = CountBits((S32)cx->r1,nbits);\r
- nbits = CountBits((S32)cx->g1,nbits);\r
- nbits = CountBits((S32)cx->b1,nbits);\r
- }\r
- \r
- ResetBitcount(t);\r
- SetBits(t,hasadd?1:0,1);\r
- SetBits(t,hasmul?1:0,1);\r
- SetBits(t,nbits,4);\r
-\r
- if (hasmul)\r
- { SetBits(t,cx->r0,nbits);\r
- SetBits(t,cx->g0,nbits);\r
- SetBits(t,cx->b0,nbits);\r
- if (alpha) SetBits(t,cx->a0,nbits);\r
- }\r
-\r
- if (hasadd)\r
- { SetBits(t,cx->r1,nbits);\r
- SetBits(t,cx->g1,nbits);\r
- SetBits(t,cx->b1,nbits);\r
- if (alpha) SetBits(t,cx->a1,nbits);\r
- }\r
- \r
- return 0;\r
-}\r
-\r
-int GetPoint(LPTAG t,LPSPOINT p) { return 0; }\r
-int SetPoint(LPTAG t,LPSPOINT p) { return 0; }\r
-\r
-// Tag List Manipulating Functions\r
-\r
-int RFXSWF_UpdateFrame(LPTAG t,S8 delta)\r
-// returns number of frames\r
-{ int res = -1;\r
- while (t)\r
- { t->frame+=delta;\r
- res = t->frame;\r
- t = t->next;\r
- }\r
- return res;\r
-}\r
-\r
-#define UpdateFrame(a,b) RFXSWF_UpdateFrame(a,b)\r
-\r
-LPTAG InsertTag(LPTAG after,U16 id) // updates frames, if nescessary\r
-{ LPTAG t;\r
-\r
- t = (LPTAG)malloc(sizeof(TAG));\r
- if (t)\r
- { memset(t,0x00,sizeof(TAG));\r
- t->id = id;\r
- t->bitcount = 0x80;\r
- \r
- if (after)\r
- { t->frame = after->frame;\r
- t->prev = after;\r
- t->next = after->next;\r
- after->next = t;\r
- if (t->next) t->next->prev = t;\r
- \r
- if (id==ST_SHOWFRAME) UpdateFrame(t->next,+1);\r
- }\r
- }\r
- return t;\r
-}\r
-\r
-int DeleteTag(LPTAG t)\r
-{ if (!t) return -1;\r
-\r
- if (t->id==ST_SHOWFRAME) UpdateFrame(t->next,-1);\r
- \r
- if (t->prev) t->prev->next = t->next;\r
- if (t->next) t->next->prev = t->prev;\r
-\r
- if (t->data) free(t->data);\r
- free(t);\r
- return 0;\r
-}\r
-\r
-LPTAG RFXSWF_ReadTag(int handle,LPTAG prev)\r
-{ LPTAG t;\r
- U16 raw;\r
- U32 len;\r
- int id;\r
-\r
- if (read(handle,&raw,2)!=2) return NULL;\r
-\r
- len = raw&0x3f;\r
- id = raw>>6;\r
-\r
- if (len==0x3f)\r
- { if (read(handle,&len,4)!=4) return NULL;\r
- }\r
-\r
- if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);\r
- // Sprite handling fix: Flaten sprite tree\r
-\r
- t = (LPTAG)malloc(sizeof(TAG));\r
- \r
- if (!t)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"Fatal Error: malloc()/realloc() failed.\n");\r
- #endif\r
- return NULL;\r
- }\r
-\r
- memset(t,0x00,sizeof(TAG));\r
- \r
- t->len = len;\r
- t->id = id;\r
-\r
- if (t->len)\r
- { t->data = (U8*)malloc(t->len);\r
- if (!t->data)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"Fatal Error: malloc()/realloc() failed.\n");\r
- #endif\r
- return NULL;\r
- }\r
- t->memsize = t->len;\r
- if (read(handle,t->data,t->len)!=t->len) return NULL;\r
- }\r
-\r
- if (prev)\r
- { t->frame = prev->frame+((prev->id==ST_SHOWFRAME)?1:0);\r
- t->prev = prev;\r
- prev->next = t;\r
- }\r
-\r
- return t;\r
-}\r
-\r
-int DefineSprite_GetRealSize(LPTAG t);\r
-\r
-int RFXSWF_WriteTag(int handle,LPTAG t)\r
-// returns tag length in bytes (incl. Header), -1 = Error\r
-// handle = -1 -> no output\r
-{ U16 raw[3];\r
- U32 len;\r
- int short_tag;\r
-\r
- if (!t) return -1;\r
-\r
- len = (t->id==ST_DEFINESPRITE)?DefineSprite_GetRealSize(t):t->len;\r
-\r
- short_tag = len<0x3f;\r
-\r
- if (handle>=0)\r
- { if (short_tag)\r
- { raw[0] = len|((t->id&0x3ff)<<6);\r
- if (write(handle,raw,2)!=2)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"WriteTag() failed: Short Header.\n");\r
- #endif\r
- return -1;\r
- }\r
- }\r
- else\r
- { raw[0] = (t->id<<6)|0x3f;\r
- raw[1] = (U16)(len&0xffff);\r
- raw[2] = (U16)(len>>16);\r
- if (write(handle,raw,6)!=6)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"WriteTag() failed: Long Header.\n");\r
- #endif\r
- return -1;\r
- }\r
- }\r
- \r
- if (t->data)\r
- { if (write(handle,t->data,t->len)!=t->len)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- fprintf(stderr,"WriteTag() failed: Data.\n");\r
- #endif\r
- return -1;\r
- }\r
- }\r
- #ifdef DEBUG_RFXSWF\r
- else if (t->len) fprintf(stderr,"WriteTag(): Tag Data Error, id=%i\n",t->id);\r
- #endif\r
- }\r
-\r
- return t->len+(short_tag?2:6);\r
-}\r
-\r
-int DefineSprite_GetRealSize(LPTAG t)\r
-// Sprite Handling: Helper function to pack DefineSprite-Tag\r
-{ U32 len = t->len;\r
- do\r
- { t = NextTag(t);\r
- if (t->id!=ST_DEFINESPRITE) len += RFXSWF_WriteTag(-1,t);\r
- else t = NULL;\r
- } while (t&&(t->id!=ST_END));\r
- return len;\r
-}\r
-\r
-#define ReadTag(a,b) RFXSWF_ReadTag(a,b)\r
-#define WriteTag(a,b) RFXSWF_WriteTag(a,b)\r
-\r
-// Movie Functions\r
-\r
-int ReadSWF(int handle,LPSWF swf) // Reads SWF to memory (malloc'ed), returns length or <0 if fails\r
-{ \r
- if (!swf) return -1;\r
- memset(swf,0x00,sizeof(SWF));\r
-\r
- { char b[32]; // Header lesen\r
- TAG t1;\r
- LPTAG t;\r
- \r
- memset(&t1,0x00,sizeof(TAG));\r
- \r
- if ((t1.len=read(handle,b,32))<21) return -1;\r
- t1.data = (U8*)b;\r
-\r
- if (GetU8(&t1)!=(U8)'F') return -1;\r
- if (GetU8(&t1)!=(U8)'W') return -1;\r
- if (GetU8(&t1)!=(U8)'S') return -1;\r
-\r
- swf->FileVersion = GetU8(&t1);\r
- swf->FileSize = GetU32(&t1);\r
- GetRect(&t1,&swf->MovieSize);\r
- swf->FrameRate = GetU16(&t1);\r
- swf->FrameCount = GetU16(&t1);\r
-\r
- GetU8(&t1);\r
- lseek(handle,GetTagPos(&t1)-1,SEEK_SET);\r
- \r
- // Tags lesen und verketten\r
- t = &t1;\r
- while (t) t = ReadTag(handle,t);\r
- swf->FirstTag = t1.next;\r
- t1.next->prev = NULL;\r
- }\r
- \r
- return 0;\r
-}\r
-int WriteSWF(int handle,LPSWF swf) // Writes SWF to file, returns length or <0 if fails\r
-{ U32 len;\r
- LPTAG t;\r
- \r
- if (!swf) return -1;\r
-\r
- // Insert REFLEX Tag\r
-\r
-#ifdef INSERT_RFX_TAG\r
-\r
- if (NextTag(swf->FirstTag))\r
- if (GetTagID(NextTag(swf->FirstTag))!=ST_REFLEX)\r
- SetBlock(InsertTag(swf->FirstTag,ST_REFLEX),"rfx",3);\r
-\r
-#endif // INSERT_RFX_TAG\r
-\r
- // Count Frames + File Size\r
-\r
- len = 0;\r
- t = swf->FirstTag;\r
- swf->FrameCount = 0;\r
-\r
- while(t)\r
- { len += WriteTag(-1,t);\r
- if (t->id==ST_SHOWFRAME) swf->FrameCount++;\r
- t = NextTag(t);\r
- }\r
- \r
- { TAG t1;\r
- char b[64];\r
- U32 l;\r
-\r
- memset(&t1,0x00,sizeof(TAG));\r
- t1.data = (U8*)b;\r
- t1.memsize = 64;\r
- \r
- SetU8(&t1,'F'); \r
- SetU8(&t1,'W'); \r
- SetU8(&t1,'S');\r
- SetU8(&t1,swf->FileVersion);\r
- \r
- SetU32(&t1,0); // Keep space for filesize\r
- SetRect(&t1,&swf->MovieSize);\r
- SetU16(&t1,swf->FrameRate);\r
- SetU16(&t1,swf->FrameCount);\r
-\r
- l = GetDataSize(&t1);\r
- swf->FileSize = l+len;\r
- t1.len = 4; // bad & ugly trick !\r
- SetU32(&t1,swf->FileSize);\r
-\r
- if (handle>=0)\r
- { \r
- int ret = write(handle,b,l);\r
- if (ret!=l)\r
- {\r
- #ifdef DEBUG_RFXSWF\r
- printf("ret:%d (fd:%d)\n",ret, handle);\r
- perror("write:");\r
- fprintf(stderr,"WriteSWF() failed: Header.\n");\r
- #endif\r
- return -1;\r
- }\r
-\r
- t = swf->FirstTag;\r
- while (t)\r
- { if (WriteTag(handle,t)<0) return -1;\r
- t = NextTag(t);\r
- }\r
- }\r
- }\r
- return (int)swf->FileSize;\r
-}\r
-\r
-int WriteCGI(LPSWF swf)\r
-{ int len;\r
- char s[1024];\r
- \r
- len = WriteSWF(-1,swf);\r
-\r
- if (len<0) return -1;\r
-\r
- sprintf(s,"Content-type: application/x-shockwave-flash\n"\r
- "Accept-Ranges: bytes\n"\r
- "Content-Length: %lu\n"\r
- "Expires: Thu, 13 Apr 2000 23:59:59 GMT\n"\r
- "\n",len);\r
- \r
- write(fileno(stdout),s,strlen(s));\r
- return WriteSWF(fileno(stdout),swf);\r
-}\r
-\r
-void FreeTags(LPSWF swf) // Frees all malloc'ed memory for tags\r
-{ LPTAG t = swf->FirstTag;\r
-\r
- while (t)\r
- { LPTAG tnew = t->next;\r
- if (t->data) free(t->data);\r
- free(t);\r
- t = tnew;\r
- }\r
-}\r
-\r
-// include advanced functions\r
-\r
-#ifdef __NT__\r
-\r
-#include "modules\swfdump.c"\r
-#include "modules\swfshape.c"\r
-#include "modules\swftext.c"\r
-#include "modules\swfobject.c"\r
-#include "modules\swfbutton.c"\r
-#include "modules\swfbits.c"\r
-#include "modules\swftools.c"\r
-#include "modules\swfcgi.c"\r
-\r
-#else\r
-\r
-#include "modules/swfdump.c"\r
-#include "modules/swfshape.c"\r
-#include "modules/swftext.c"\r
-#include "modules/swfobject.c"\r
-#include "modules/swfbutton.c"\r
-#include "modules/swfbits.c"\r
-#include "modules/swftools.c"\r
-#include "modules/swfcgi.c"\r
-\r
-#endif\r
-\r
-\r
+/* vi: set sts=2 sw=2 :*/
+/* rfxswf.c
+
+ Library for creating and reading SWF files or parts of it.
+ There's a module directory which provides some extended functionality.
+ Most modules are included at the bottom of this file.
+
+ Part of the swftools package.
+
+ Copyright (c) 2000-2003 Rainer Böhme <rfxswf@reflex-studio.de>
+ Copyright (c) 2003 Matthias Kramm <kramm@quiss.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+#include "rfxswf.h"
+
+#ifdef HAVE_JPEGLIB
+#define HAVE_BOOLEAN
+#include <jpeglib.h>
+#endif // HAVE_JPEGLIB
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif // HAVE_ZLIB
+
+#ifndef RFXSWF_DISABLESOUND
+#ifdef HAVE_LAME
+#include "lame/lame.h"
+#endif
+#endif
+
+#include "./bitio.h"
+#include "./MD5.h"
+
+// internal constants
+
+#define MALLOC_SIZE 128
+#define INSERT_RFX_TAG
+
+#define MEMSIZE(l) (((l/MALLOC_SIZE)+1)*MALLOC_SIZE)
+
+
+// inline wrapper functions
+
+TAG * swf_NextTag(TAG * t) { return t->next; }
+TAG * swf_PrevTag(TAG * t) { return t->prev; }
+U16 swf_GetTagID(TAG * t) { return t->id; }
+U32 swf_GetTagLen(TAG * t) { return t->len; }
+U8* swf_GetTagLenPtr(TAG * t) { return &(t->data[t->len]); }
+U32 swf_GetTagPos(TAG * t) { return t->pos; }
+
+// Basic Data Access Functions
+
+#define swf_ResetReadBits(tag) if (tag->readBit) { tag->pos++; tag->readBit = 0; }
+#define swf_ResetWriteBits(tag) if (tag->writeBit) { tag->writeBit = 0; }
+
+// for future purpose: avoid high level lib functions to change tagpos/bitpos
+
+#define swf_SaveTagPos(tag)
+#define swf_RestoreTagPos(tag)
+
+void swf_SetTagPos(TAG * t,U32 pos)
+{ swf_ResetReadBits(t);
+ if (pos<=t->len) t->pos = pos;
+ #ifdef DEBUG_RFXSWF
+ else fprintf(stderr,"SetTagPos() out of bounds: TagID = %i\n",t->id);
+ #endif
+}
+
+char* swf_GetString(TAG*t)
+{
+ char* str = ((char*)(&(t)->data[(t)->pos]));
+ while(swf_GetU8(t));
+ return str;
+}
+
+U8 swf_GetU8(TAG * t)
+{ swf_ResetReadBits(t);
+ #ifdef DEBUG_RFXSWF
+ if (t->pos>=t->len)
+ { fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);
+ return 0;
+ }
+ #endif
+ return t->data[t->pos++];
+}
+
+U16 swf_GetU16(TAG * t)
+{ U16 res;
+ swf_ResetReadBits(t);
+ #ifdef DEBUG_RFXSWF
+ if (t->pos>(t->len-2))
+ { fprintf(stderr,"GetU16() out of bounds: TagID = %i\n",t->id);
+ return 0;
+ }
+ #endif
+ res = t->data[t->pos] | (t->data[t->pos+1]<<8);
+ t->pos+=2;
+ return res;
+}
+
+U32 swf_GetU32(TAG * t)
+{ U32 res;
+ swf_ResetReadBits(t);
+ #ifdef DEBUG_RFXSWF
+ if (t->pos>(t->len-4))
+ { fprintf(stderr,"GetU32() out of bounds: TagID = %i\n",t->id);
+ return 0;
+ }
+ #endif
+ res = t->data[t->pos] | (t->data[t->pos+1]<<8) |
+ (t->data[t->pos+2]<<16) | (t->data[t->pos+3]<<24);
+ t->pos+=4;
+ return res;
+}
+
+int swf_GetBlock(TAG * t,U8 * b,int l)
+// returns number of bytes written (<=l)
+// b = NULL -> skip data
+{ swf_ResetReadBits(t);
+ if ((t->len-t->pos)<l) l=t->len-t->pos;
+ if (b && l) memcpy(b,&t->data[t->pos],l);
+ t->pos+=l;
+ return l;
+}
+
+int swf_SetBlock(TAG * t,U8 * b,int l)
+// Appends Block to the end of Tagdata, returns size
+{ U32 newlen = t->len + l;
+ swf_ResetWriteBits(t);
+ if (newlen>t->memsize)
+ { U32 newmem = MEMSIZE(newlen);
+ U8 * newdata = (U8*)((t->data)?realloc(t->data,newmem):malloc(newmem));
+ if (!newdata)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"Fatal Error: malloc()/realloc() failed (1). (%d bytes)\n", newmem);
+ *(int*)0=0;
+ #endif
+ return 0;
+ }
+ t->memsize = newmem;
+ t->data = newdata;
+ }
+ if (b) memcpy(&t->data[t->len],b,l);
+ else memset(&t->data[t->len],0x00,l);
+ t->len+=l;
+ return l;
+}
+
+int swf_SetU8(TAG * t,U8 v)
+{ swf_ResetWriteBits(t);
+ if ((t->len+1)>t->memsize) return (swf_SetBlock(t,&v,1)==1)?0:-1;
+ t->data[t->len++] = v;
+ return 0;
+}
+
+int swf_SetU16(TAG * t,U16 v)
+{ U8 a[2];
+ a[0] = v&0xff;
+ a[1] = v>>8;
+
+ swf_ResetWriteBits(t);
+ if ((t->len+2)>t->memsize) return (swf_SetBlock(t,a,2)==2)?0:-1;
+ t->data[t->len++] = a[0];
+ t->data[t->len++] = a[1];
+ return 0;
+}
+
+int swf_SetU32(TAG * t,U32 v)
+{ U8 a[4];
+ a[0] = v&0xff; // to ensure correct handling of non-intel byteorder
+ a[1] = (v>>8)&0xff;
+ a[2] = (v>>16)&0xff;
+ a[3] = (v>>24)&0xff;
+
+ swf_ResetWriteBits(t);
+ if ((t->len+4)>t->memsize) return (swf_SetBlock(t,a,4)==4)?0:-1;
+ t->data[t->len++] = a[0];
+ t->data[t->len++] = a[1];
+ t->data[t->len++] = a[2];
+ t->data[t->len++] = a[3];
+ return 0;
+}
+
+U32 swf_GetBits(TAG * t,int nbits)
+{ U32 res = 0;
+ if (!nbits) return 0;
+ if (!t->readBit) t->readBit = 0x80;
+ while (nbits)
+ { res<<=1;
+ if (t->data[t->pos]&t->readBit) res|=1;
+ t->readBit>>=1;
+ nbits--;
+ if (!t->readBit)
+ { if (nbits) t->readBit = 0x80;
+ #ifdef DEBUG_RFXSWF
+ if (t->pos>=t->len)
+ { fprintf(stderr,"GetBits() out of bounds: TagID = %i\n",t->id);
+ return res;
+ }
+ #endif
+ t->pos++;
+ }
+ }
+ return res;
+}
+
+S32 swf_GetSBits(TAG * t,int nbits)
+{ U32 res = swf_GetBits(t,nbits);
+ if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
+ return (S32)res;
+}
+
+U32 reader_GetBits(struct reader_t*reader, int nbits)
+{ return reader_readbits(reader, nbits);
+}
+S32 reader_GetSBits(struct reader_t*reader, int nbits)
+{ U32 res = reader_readbits(reader, nbits);
+ if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
+ return (S32)res;
+}
+
+int swf_SetBits(TAG * t,U32 v,int nbits)
+{ U32 bm = 1<<(nbits-1);
+
+ while (nbits)
+ { if (!t->writeBit)
+ { if (FAILED(swf_SetU8(t,0))) return -1;
+ t->writeBit = 0x80;
+ }
+ if (v&bm) t->data[t->len-1] |= t->writeBit;
+ bm>>=1;
+ t->writeBit>>=1;
+ nbits--;
+ }
+ return 0;
+}
+
+// Advanced Data Access Functions
+
+int swf_SetRGB(TAG * t,RGBA * col)
+{ if (!t) return -1;
+ if (col)
+ { swf_SetU8(t,col->r);
+ swf_SetU8(t,col->g);
+ swf_SetU8(t,col->b);
+ } else swf_SetBlock(t,NULL,3);
+ return 0;
+}
+void swf_GetRGB(TAG * t, RGBA * col)
+{
+ RGBA dummy;
+ if(!col)
+ col = &dummy;
+ col->r = swf_GetU8(t);
+ col->g = swf_GetU8(t);
+ col->b = swf_GetU8(t);
+ col->a = 255;
+}
+
+int swf_SetRGBA(TAG * t,RGBA * col)
+{ if (!t) return -1;
+ if (col)
+ { swf_SetU8(t,col->r);
+ swf_SetU8(t,col->g);
+ swf_SetU8(t,col->b);
+ swf_SetU8(t,col->a);
+ } else swf_SetBlock(t,NULL,4);
+ return 0;
+}
+void swf_GetRGBA(TAG * t, RGBA * col)
+{
+ RGBA dummy;
+ if(!col);
+ col = &dummy;
+ col->r = swf_GetU8(t);
+ col->g = swf_GetU8(t);
+ col->b = swf_GetU8(t);
+ col->a = swf_GetU8(t);
+}
+
+void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
+{
+ GRADIENT dummy;
+ int t;
+ if(!tag) {
+ memset(gradient, 0, sizeof(GRADIENT));
+ return;
+ }
+ if(!gradient)
+ gradient = &dummy;
+ gradient->num = swf_GetU8(tag);
+ for(t=0;t<gradient->num;t++)
+ {
+ int s=t;
+ if(s>=8) //FIXME
+ s=7;
+ gradient->ratios[t] = swf_GetU8(tag);
+ if(!alpha)
+ swf_GetRGB(tag, &gradient->rgba[t]);
+ else
+ swf_GetRGBA(tag, &gradient->rgba[t]);
+ }
+}
+
+void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
+{
+ int t;
+ if(!tag) {
+ memset(gradient, 0, sizeof(GRADIENT));
+ return;
+ }
+ swf_SetU8(tag, gradient->num);
+ for(t=0; t<8 && t<gradient->num; t++)
+ {
+ swf_SetU8(tag, gradient->ratios[t]);
+ if(!alpha)
+ swf_SetRGB(tag, &gradient->rgba[t]);
+ else
+ swf_SetRGBA(tag, &gradient->rgba[t]);
+ }
+}
+
+int swf_CountUBits(U32 v,int nbits)
+{ int n = 32;
+ U32 m = 0x80000000;
+ if(v == 0x00000000) n = 0;
+ else
+ while (!(v&m))
+ { n--;
+ m>>=1;
+ }
+ return (n>nbits)?n:nbits;
+}
+
+int swf_CountBits(U32 v,int nbits)
+{ int n = 33;
+ U32 m = 0x80000000;
+ if (v&m)
+ { if(v == 0xffffffff) n = 1;
+ else
+ while (v&m)
+ { n--;
+ m>>=1;
+ }
+ }
+ else
+ { if(v == 0x00000000) n = 0;
+ else
+ while (!(v&m))
+ { n--;
+ m>>=1;
+ }
+ }
+ return (n>nbits)?n:nbits;
+}
+
+int swf_GetRect(TAG * t,SRECT * r)
+{ int nbits;
+ SRECT dummy;
+ if(!t) {r->xmin=r->xmax=r->ymin=r->ymax=0;return 0;}
+ if (!r) r = &dummy;
+ nbits = (int) swf_GetBits(t,5);
+ r->xmin = swf_GetSBits(t,nbits);
+ r->xmax = swf_GetSBits(t,nbits);
+ r->ymin = swf_GetSBits(t,nbits);
+ r->ymax = swf_GetSBits(t,nbits);
+ return 0;
+}
+
+int reader_GetRect(struct reader_t*reader,SRECT * r)
+{ int nbits;
+ SRECT dummy;
+ if (!r) r = &dummy;
+ nbits = (int) reader_GetBits(reader,5);
+ r->xmin = reader_GetSBits(reader,nbits);
+ r->xmax = reader_GetSBits(reader,nbits);
+ r->ymin = reader_GetSBits(reader,nbits);
+ r->ymax = reader_GetSBits(reader,nbits);
+ return 0;
+}
+
+int swf_SetRect(TAG * t,SRECT * r)
+{ int nbits;
+
+ nbits = swf_CountBits(r->xmin,0);
+ nbits = swf_CountBits(r->xmax,nbits);
+ nbits = swf_CountBits(r->ymin,nbits);
+ nbits = swf_CountBits(r->ymax,nbits);
+ if(nbits>=32) {
+ fprintf(stderr, "rfxswf: Warning: num_bits overflow in swf_SetRect\n");
+ nbits=31;
+ }
+
+ swf_SetBits(t,nbits,5);
+ swf_SetBits(t,r->xmin,nbits);
+ swf_SetBits(t,r->xmax,nbits);
+ swf_SetBits(t,r->ymin,nbits);
+ swf_SetBits(t,r->ymax,nbits);
+
+ return 0;
+}
+
+void swf_ExpandRect(SRECT*src, SPOINT add)
+{
+ if(add.x < src->xmin)
+ src->xmin = add.x;
+ if(add.x > src->xmax)
+ src->xmax = add.x;
+ if(add.y < src->ymin)
+ src->ymin = add.y;
+ if(add.y > src->ymax)
+ src->ymax = add.y;
+}
+void swf_ExpandRect2(SRECT*src, SRECT*add)
+{
+ if((add->xmin | add->ymin | add->xmax | add->ymax)==0)
+ return;
+ if(add->xmin < src->xmin)
+ src->xmin = add->xmin;
+ if(add->ymin < src->ymin)
+ src->ymin = add->ymin;
+ if(add->xmax > src->xmax)
+ src->xmax = add->xmax;
+ if(add->ymax > src->ymax)
+ src->ymax = add->ymax;
+}
+SPOINT swf_TurnPoint(SPOINT p, MATRIX* m)
+{
+ SPOINT r;
+ r.x = (int)(m->sx*(1/65536.0)*p.x + m->r1*(1/65536.0)*p.y + 0.5) + m->tx;
+ r.y = (int)(m->r0*(1/65536.0)*p.x + m->sy*(1/65536.0)*p.y + 0.5) + m->ty;
+ return r;
+}
+SRECT swf_TurnRect(SRECT r, MATRIX* m)
+{
+ SRECT g;
+ SPOINT p1,p2,p3,p4,pp1,pp2,pp3,pp4;
+ p1.x = r.xmin;p1.y = r.ymin;
+ p2.x = r.xmax;p2.y = r.ymin;
+ p3.x = r.xmin;p3.y = r.ymax;
+ p4.x = r.xmax;p4.y = r.ymax;
+ pp1 = swf_TurnPoint(p1, m);
+ pp2 = swf_TurnPoint(p2, m);
+ pp3 = swf_TurnPoint(p3, m);
+ pp4 = swf_TurnPoint(p4, m);
+ g.xmin = g.xmax = pp1.x;
+ g.ymin = g.ymax = pp1.y;
+ swf_ExpandRect(&g, pp2);
+ swf_ExpandRect(&g, pp3);
+ swf_ExpandRect(&g, pp4);
+ return g;
+}
+
+
+int swf_GetMatrix(TAG * t,MATRIX * m)
+{ MATRIX dummy;
+ int nbits;
+
+ if (!m) m = &dummy;
+
+ if (!t)
+ { m->sx = m->sy = 0x10000;
+ m->r0 = m->r1 = 0;
+ m->tx = m->ty = 0;
+ return -1;
+ }
+
+ swf_ResetReadBits(t);
+
+ if (swf_GetBits(t,1))
+ { nbits = swf_GetBits(t,5);
+ m->sx = swf_GetSBits(t,nbits);
+ m->sy = swf_GetSBits(t,nbits);
+ }
+ else m->sx = m->sy = 0x10000;
+
+ if (swf_GetBits(t,1))
+ { nbits = swf_GetBits(t,5);
+ m->r0 = swf_GetSBits(t,nbits);
+ m->r1 = swf_GetSBits(t,nbits);
+ }
+ else m->r0 = m->r1 = 0x0;
+
+ nbits = swf_GetBits(t,5);
+ m->tx = swf_GetSBits(t,nbits);
+ m->ty = swf_GetSBits(t,nbits);
+
+ return 0;
+}
+
+int swf_SetMatrix(TAG * t,MATRIX * m)
+{ int nbits;
+ MATRIX ma;
+
+ if (!m)
+ { m = &ma;
+ ma.sx = ma.sy = 0x10000;
+ ma.r0 = ma.r1 = 0;
+ ma.tx = ma.ty = 0;
+ }
+
+ swf_ResetWriteBits(t);
+
+ if ((m->sx==0x10000)&&(m->sy==0x10000)) swf_SetBits(t,0,1);
+ else
+ { swf_SetBits(t,1,1);
+ nbits = swf_CountBits(m->sx,0);
+ nbits = swf_CountBits(m->sy,nbits);
+ if(nbits>=32) {
+ fprintf(stderr,"rfxswf: Error: matrix values too large\n");
+ nbits = 31;
+ }
+ swf_SetBits(t,nbits,5);
+ swf_SetBits(t,m->sx,nbits);
+ swf_SetBits(t,m->sy,nbits);
+ }
+
+ if ((!m->r0)&&(!m->r1)) swf_SetBits(t,0,1);
+ else
+ { swf_SetBits(t,1,1);
+ nbits = swf_CountBits(m->r0,0);
+ nbits = swf_CountBits(m->r1,nbits);
+ if(nbits>=32) {
+ fprintf(stderr,"rfxswf: Error: matrix values too large\n");
+ nbits = 31;
+ }
+ swf_SetBits(t,nbits,5);
+ swf_SetBits(t,m->r0,nbits);
+ swf_SetBits(t,m->r1,nbits);
+ }
+
+ nbits = swf_CountBits(m->tx,0);
+ nbits = swf_CountBits(m->ty,nbits);
+ if(nbits>=32) {
+ fprintf(stderr,"rfxswf: Error: matrix values too large\n");
+ nbits = 31;
+ }
+ swf_SetBits(t,nbits,5);
+ swf_SetBits(t,m->tx,nbits);
+ swf_SetBits(t,m->ty,nbits);
+
+ return 0;
+}
+
+int swf_GetCXForm(TAG * t,CXFORM * cx,U8 alpha) //FIXME: alpha should be type bool
+{ CXFORM cxf;
+ int hasadd;
+ int hasmul;
+ int nbits;
+
+ if (!cx) cx = &cxf;
+
+ cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
+ cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
+
+ if (!t) return 0;
+
+ swf_ResetReadBits(t);
+ hasadd = swf_GetBits(t,1);
+ hasmul = swf_GetBits(t,1);
+ nbits = swf_GetBits(t,4);
+
+ if (hasmul)
+ { cx->r0 = (S16)swf_GetSBits(t,nbits);
+ cx->g0 = (S16)swf_GetSBits(t,nbits);
+ cx->b0 = (S16)swf_GetSBits(t,nbits);
+ if (alpha)
+ cx->a0 = (S16)swf_GetSBits(t,nbits);
+ }
+
+ if (hasadd)
+ { cx->r1 = (S16)swf_GetSBits(t,nbits);
+ cx->g1 = (S16)swf_GetSBits(t,nbits);
+ cx->b1 = (S16)swf_GetSBits(t,nbits);
+ if (alpha)
+ cx->a1 = (S16)swf_GetSBits(t,nbits);
+ }
+
+ return 0;
+}
+
+int swf_SetCXForm(TAG * t,CXFORM * cx,U8 alpha)
+{ CXFORM cxf;
+ int hasadd;
+ int hasmul;
+ int nbits;
+
+ if (!cx)
+ { cx = &cxf;
+ cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
+ cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
+ }
+
+ if (!alpha)
+ { cx->a0 = 256;
+ cx->a1 = 0;
+ }
+
+ nbits = 0;
+
+ hasmul = (cx->a0!=256)||(cx->r0!=256)||(cx->g0!=256)||(cx->b0!=256);
+ hasadd = cx->a1|cx->r1|cx->g1|cx->b1;
+
+ if (hasmul)
+ { if (alpha) nbits = swf_CountBits((S32)cx->a0,nbits);
+ nbits = swf_CountBits((S32)cx->r0,nbits);
+ nbits = swf_CountBits((S32)cx->g0,nbits);
+ nbits = swf_CountBits((S32)cx->b0,nbits);
+ }
+
+ if (hasadd)
+ { if (alpha) nbits = swf_CountBits((S32)cx->a1,nbits);
+ nbits = swf_CountBits((S32)cx->r1,nbits);
+ nbits = swf_CountBits((S32)cx->g1,nbits);
+ nbits = swf_CountBits((S32)cx->b1,nbits);
+ }
+
+ swf_ResetWriteBits(t);
+ swf_SetBits(t,hasadd?1:0,1);
+ swf_SetBits(t,hasmul?1:0,1);
+ swf_SetBits(t,nbits,4);
+
+ if (hasmul)
+ { swf_SetBits(t,cx->r0,nbits);
+ swf_SetBits(t,cx->g0,nbits);
+ swf_SetBits(t,cx->b0,nbits);
+ if (alpha) swf_SetBits(t,cx->a0,nbits);
+ }
+
+ if (hasadd)
+ { swf_SetBits(t,cx->r1,nbits);
+ swf_SetBits(t,cx->g1,nbits);
+ swf_SetBits(t,cx->b1,nbits);
+ if (alpha) swf_SetBits(t,cx->a1,nbits);
+ }
+
+ return 0;
+}
+
+//int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
+//int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
+
+void swf_SetPassword(TAG * t, const char * password)
+{
+ /* WARNING: crypt_md5 is not reentrant */
+ char* md5string = crypt_md5(password, "salt"); /* FIXME- get random salt */
+ swf_SetString(t, md5string);
+}
+
+int swf_VerifyPassword(TAG * t, const char * password)
+{
+ char*md5string1, *md5string2;
+ char*x;
+ char*md5, *salt;
+ int n;
+
+ md5string1 = swf_GetString(t);
+
+ if(!strncmp(md5string1, "$1$",3 )) {
+ return 0;
+ }
+ x = strchr(md5string1+3, '$');
+ if(!x)
+ return 0;
+ n = x-(md5string1+3);
+ salt = (char*)malloc(n+1);
+ memcpy(salt, md5string1+3, n);
+ salt[n] = 0;
+
+ md5string2 = crypt_md5(password, salt);
+ free(salt);
+ if(strcmp(md5string1, md5string2) != 0)
+ return 0;
+ return 1;
+}
+
+// Tag List Manipulating Functions
+
+TAG * swf_InsertTag(TAG * after,U16 id)
+{ TAG * t;
+
+ t = (TAG *)malloc(sizeof(TAG));
+ if (t)
+ { memset(t,0x00,sizeof(TAG));
+ t->id = id;
+
+ if (after)
+ {
+ t->prev = after;
+ t->next = after->next;
+ after->next = t;
+ if (t->next) t->next->prev = t;
+ }
+ }
+ return t;
+}
+
+TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)
+{ TAG * t;
+
+ t = (TAG *)malloc(sizeof(TAG));
+ if (t)
+ { memset(t,0x00,sizeof(TAG));
+ t->id = id;
+
+ if (before)
+ {
+ t->next = before;
+ t->prev = before->prev;
+ before->prev = t;
+ if (t->prev) t->prev->next = t;
+ }
+ }
+ if(swf && swf->firstTag == before) {
+ swf->firstTag = t;
+ }
+ return t;
+}
+
+void swf_ClearTag(TAG * t)
+{
+ if (t->data) free(t->data);
+ t->data = 0;
+ t->pos = 0;
+ t->len = 0;
+ t->readBit = 0;
+ t->writeBit = 0;
+ t->memsize = 0;
+}
+
+void swf_ResetTag(TAG*tag, U16 id)
+{
+ tag->len = tag->pos = tag->readBit = tag->writeBit = 0;
+ tag->id = id;
+}
+
+int swf_DeleteTag(TAG * t)
+{ if (!t) return -1;
+
+ if (t->prev) t->prev->next = t->next;
+ if (t->next) t->next->prev = t->prev;
+
+ if (t->data) free(t->data);
+ free(t);
+ return 0;
+}
+
+TAG * swf_ReadTag(struct reader_t*reader, TAG * prev)
+{ TAG * t;
+ U16 raw;
+ U32 len;
+ int id;
+
+ if (reader->read(reader, &raw, 2) !=2 ) return NULL;
+ raw = SWAP16(raw);
+
+ len = raw&0x3f;
+ id = raw>>6;
+
+ if (len==0x3f)
+ {
+ if (reader->read(reader, &len, 4) != 4) return NULL;
+ len = SWAP32(len);
+ }
+
+ if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
+ // Sprite handling fix: Flatten sprite tree
+
+ t = (TAG *)malloc(sizeof(TAG));
+
+ if (!t)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"Fatal Error: malloc()/realloc() failed (2). (%d bytes)\n", sizeof(TAG));
+ #endif
+ return NULL;
+ }
+
+ memset(t,0x00,sizeof(TAG));
+
+ t->len = len;
+ t->id = id;
+
+ if (t->len)
+ { t->data = (U8*)malloc(t->len);
+ if (!t->data)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"Fatal Error: malloc()/realloc() failed (3). (%d bytes)\n", t->len);
+ #endif
+ return NULL;
+ }
+ t->memsize = t->len;
+ if (reader->read(reader, t->data, t->len) != t->len) return NULL;
+ }
+
+ if (prev)
+ {
+ t->prev = prev;
+ prev->next = t;
+ }
+
+ return t;
+}
+
+int swf_DefineSprite_GetRealSize(TAG * t);
+
+int swf_WriteTag2(struct writer_t*writer, TAG * t)
+// returns tag length in bytes (incl. Header), -1 = Error
+// writer = 0 -> no output
+{ U16 raw[3];
+ U32 len;
+ int short_tag;
+
+ if (!t) return -1;
+
+ len = (t->id==ST_DEFINESPRITE)?swf_DefineSprite_GetRealSize(t):t->len;
+
+ short_tag = len<0x3f;
+
+ if (writer)
+ { if (short_tag)
+ { raw[0] = SWAP16(len|((t->id&0x3ff)<<6));
+ if (writer->write(writer,raw,2)!=2)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"WriteTag() failed: Short Header.\n");
+ #endif
+ return -1;
+ }
+ }
+ else
+ {
+ raw[0] = SWAP16((t->id<<6)|0x3f);
+ if (writer->write(writer,raw,2)!=2)
+ {
+#ifdef DEBUG_RFXSWF
+ fprintf(stderr,"WriteTag() failed: Long Header (1).\n");
+#endif
+ return -1;
+ }
+
+ len = SWAP32(len);
+ if (writer->write(writer,&len,4)!=4)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"WriteTag() failed: Long Header (2).\n");
+ #endif
+ return -1;
+ }
+ }
+
+ if (t->data)
+ { if (writer->write(writer,t->data,t->len)!=t->len)
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr,"WriteTag() failed: Data.\n");
+ #endif
+ return -1;
+ }
+ }
+ #ifdef DEBUG_RFXSWF
+ else if (t->len) fprintf(stderr,"WriteTag(): Tag Data Error, id=%i\n",t->id);
+ #endif
+ }
+
+ return t->len+(short_tag?2:6);
+}
+
+int swf_WriteTag(int handle, TAG * t)
+{
+ struct writer_t writer;
+ if(handle<0)
+ return swf_WriteTag2(0, t);
+ writer_init_filewriter(&writer, handle);
+ return swf_WriteTag2(&writer, t);
+}
+
+int swf_DefineSprite_GetRealSize(TAG * t)
+// Sprite Handling: Helper function to pack DefineSprite-Tag
+{ U32 len = t->len;
+ if(len>4) { // folded sprite
+ return t->len;
+ }
+ do
+ { t = swf_NextTag(t);
+ if (t && t->id!=ST_DEFINESPRITE) len += swf_WriteTag(-1, t);
+ else t = NULL;
+ } while (t&&(t->id!=ST_END));
+ return len;
+}
+
+void swf_UnFoldSprite(TAG * t)
+{
+ U16 id,tmp;
+ U32 len;
+ TAG*next = t;
+ U16 spriteid,spriteframes;
+ int level;
+ if(t->id!=ST_DEFINESPRITE)
+ return;
+ if(t->len<=4) // not folded
+ return;
+
+ swf_SetTagPos(t,0);
+
+ spriteid = swf_GetU16(t); //id
+ spriteframes = swf_GetU16(t); //frames
+
+ level = 1;
+
+ while(1)
+ {
+ TAG*it = 0;
+ tmp = swf_GetU16(t);
+ len = tmp&0x3f;
+ id = tmp>>6;
+ if(id == ST_END)
+ level--;
+ if(id == ST_DEFINESPRITE && len<=4)
+ level++;
+
+ if (len==0x3f)
+ len = swf_GetU32(t);
+ it = swf_InsertTag(next, id);
+ next = it;
+ it->len = len;
+ it->id = id;
+ if (it->len)
+ { it->data = (U8*)malloc(it->len);
+ it->memsize = it->len;
+ swf_GetBlock(t, it->data, it->len);
+ }
+
+ if(!level)
+ break;
+ }
+
+ free(t->data); t->data = 0;
+ t->memsize = t->len = t->pos = 0;
+
+ swf_SetU16(t, spriteid);
+ swf_SetU16(t, spriteframes);
+}
+
+void swf_FoldSprite(TAG * t)
+{
+ TAG*sprtag=t,*tmp;
+ U16 id,frames,tmpid;
+ int level;
+ if(t->id!=ST_DEFINESPRITE)
+ return;
+ if(!t->len) {
+ fprintf(stderr, "Error: Sprite has no ID!");
+ return;
+ }
+ if(t->len>4) {
+ /* sprite is already folded */
+ return;
+ }
+
+ t->pos = 0;
+ id = swf_GetU16(t);
+ free(t->data);
+ t->len = t->pos = t->memsize = 0;
+ t->data = 0;
+
+ frames = 0;
+
+ t = swf_NextTag(sprtag);
+ level = 1;
+
+ do
+ {
+ if(t->id==ST_SHOWFRAME) frames++;
+ if(t->id == ST_DEFINESPRITE && t->len<=4)
+ level++;
+ if(t->id == ST_END)
+ level--;
+ t = swf_NextTag(t);
+ } while(t && level);
+ if(level)
+ fprintf(stderr, "rfxswf error: sprite doesn't end(1)\n");
+
+ swf_SetU16(sprtag, id);
+ swf_SetU16(sprtag, frames);
+
+ t = swf_NextTag(sprtag);
+ level = 1;
+
+ do
+ {
+ if(t->len<0x3f) {
+ swf_SetU16(sprtag,t->len|(t->id<<6));
+ } else {
+ swf_SetU16(sprtag,0x3f|(t->id<<6));
+ swf_SetU32(sprtag,t->len);
+ }
+ if(t->len)
+ swf_SetBlock(sprtag,t->data, t->len);
+ tmp = t;
+ if(t->id == ST_DEFINESPRITE && t->len<=4)
+ level++;
+ if(t->id == ST_END)
+ level--;
+ t = swf_NextTag(t);
+ swf_DeleteTag(tmp);
+ }
+ while (t && level);
+ if(level)
+ fprintf(stderr, "rfxswf error: sprite doesn't end(2)\n");
+
+// sprtag->next = t;
+// t->prev = sprtag;
+}
+
+int swf_IsFolded(TAG * t)
+{
+ return (t->id == ST_DEFINESPRITE && t->len>4);
+}
+
+void swf_FoldAll(SWF*swf)
+{
+ TAG*tag = swf->firstTag;
+ //swf_DumpSWF(stdout, swf);
+ while(tag) {
+ if(tag->id == ST_DEFINESPRITE) {
+ swf_FoldSprite(tag);
+ //swf_DumpSWF(stdout, swf);
+ }
+ tag = swf_NextTag(tag);
+ }
+}
+
+void swf_UnFoldAll(SWF*swf)
+{
+ TAG*tag = swf->firstTag;
+ while(tag) {
+ if(tag->id == ST_DEFINESPRITE)
+ swf_UnFoldSprite(tag);
+ tag = tag->next;
+ }
+}
+
+void swf_OptimizeTagOrder(SWF*swf)
+{
+ TAG*tag,*next;
+ TAG*level0;
+ int level;
+ int changes;
+ swf_UnFoldAll(swf);
+ /* at the moment, we don't actually do optimizing,
+ only fixing of non-spec-conformant things like
+ sprite tags */
+
+ do {
+ changes = 0;
+ level = 0;
+ level0 = 0;
+ tag = swf->firstTag;
+ while(tag) {
+ next = tag->next;
+ if(tag->id == ST_DEFINESPRITE) {
+ if(tag->len>4) {
+ /* ??? all sprites are supposed to be unfolded */
+ fprintf(stderr, "librfxswf error - internal error in OptimizeTagOrder/UnfoldAll\n");
+ }
+ level++;
+ if(level==1) {
+ level0 = tag;
+ tag = next;
+ continue;
+ }
+ }
+ if(level>=1) {
+ /* move non-sprite tags out of sprite */
+ if(!swf_isAllowedSpriteTag(tag) || level>=2) {
+ /* remove tag from current position */
+ tag->prev->next = tag->next;
+ if(tag->next)
+ tag->next->prev = tag->prev;
+
+ /* insert before tag level0 */
+ tag->next = level0;
+ tag->prev = level0->prev;
+ level0->prev = tag;
+ tag->prev->next = tag;
+ changes = 1;
+ }
+ }
+ if(tag->id == ST_END) {
+ level--;
+ }
+
+ tag = next;
+ }
+ } while(changes);
+}
+
+// Movie Functions
+
+int swf_ReadSWF2(struct reader_t*reader, SWF * swf) // Reads SWF to memory (malloc'ed), returns length or <0 if fails
+{
+ if (!swf) return -1;
+ memset(swf,0x00,sizeof(SWF));
+
+ { char b[32]; // read Header
+ int len;
+ TAG * t;
+ TAG t1;
+ struct reader_t zreader;
+
+ if ((len = reader->read(reader ,b,8))<8) return -1;
+
+ if (b[0]!='F' && b[0]!='C') return -1;
+ if (b[1]!='W') return -1;
+ if (b[2]!='S') return -1;
+ swf->fileVersion = b[3];
+ swf->compressed = (b[0]=='C')?1:0;
+ swf->fileSize = GET32(&b[4]);
+
+ if(swf->compressed) {
+ reader_init_zlibinflate(&zreader, reader);
+ reader = &zreader;
+ }
+
+ reader_GetRect(reader, &swf->movieSize);
+ reader->read(reader, &swf->frameRate, 2);
+ swf->frameRate = SWAP16(swf->frameRate);
+ reader->read(reader, &swf->frameCount, 2);
+ swf->frameCount = SWAP16(swf->frameCount);
+
+ /* read tags and connect to list */
+ t = &t1;
+ while (t) t = swf_ReadTag(reader,t);
+ swf->firstTag = t1.next;
+ t1.next->prev = NULL;
+ }
+
+ return reader->pos;
+}
+
+int swf_ReadSWF(int handle, SWF * swf)
+{
+ struct reader_t reader;
+ reader_init_filereader(&reader, handle);
+ return swf_ReadSWF2(&reader, swf);
+}
+
+int swf_WriteSWF2(struct writer_t*writer, SWF * swf) // Writes SWF to file, returns length or <0 if fails
+{ U32 len;
+ TAG * t;
+ int frameCount=0;
+ struct writer_t zwriter;
+ int fileSize = 0;
+
+ if (!swf) return -1;
+
+ // Insert REFLEX Tag
+
+#ifdef INSERT_RFX_TAG
+
+ if (swf->firstTag && swf_NextTag(swf->firstTag))
+ if (swf_GetTagID(swf_NextTag(swf->firstTag))!=ST_REFLEX)
+ swf_SetBlock(swf_InsertTag(swf->firstTag,ST_REFLEX),"rfx",3);
+
+#endif // INSERT_RFX_TAG
+
+ // Count Frames + File Size
+
+ len = 0;
+ t = swf->firstTag;
+ frameCount = 0;
+
+ while(t)
+ { len += swf_WriteTag(-1, t);
+ if (t->id==ST_SHOWFRAME) frameCount++;
+ t = swf_NextTag(t);
+ }
+
+ { TAG t1;
+ char b[64],b4[4];
+ U32 l;
+
+ memset(&t1,0x00,sizeof(TAG));
+ t1.data = (U8*)b;
+ t1.memsize = 64;
+
+ { // measure header file size
+ TAG t2;
+ char b2[64];
+ memset(&t2,0x00,sizeof(TAG));
+ t2.data = (U8*)b2;
+ t2.memsize = 64;
+ swf_SetRect(&t2, &swf->movieSize);
+ swf_SetU16(&t2, swf->frameRate);
+ swf_SetU16(&t2, swf->frameCount);
+ l = swf_GetTagLen(&t2)+8;
+ }
+ if(swf->compressed == 8) {
+ l -= 8;
+ }
+
+ fileSize = l+len;
+ if(len) {// don't touch headers without tags
+ swf->fileSize = fileSize;
+ swf->frameCount = frameCount;
+ }
+
+ if(swf->compressed != 8) {
+ /* compressed flag set to 8 means "skip first 8
+ header bytes". This is necessary if the caller wants to
+ create compressed SWFs himself */
+ if(swf->compressed) {
+ char*id = "CWS";
+ writer->write(writer, id, 3);
+ }
+ else {
+ char*id = "FWS";
+ writer->write(writer, id, 3);
+ }
+
+ writer->write(writer, &swf->fileVersion, 1);
+ PUT32(b4, swf->fileSize);
+ writer->write(writer, b4, 4);
+
+ if(swf->compressed) {
+ writer_init_zlibdeflate(&zwriter, writer);
+ writer = &zwriter;
+ }
+ }
+
+ swf_SetRect(&t1,&swf->movieSize);
+ swf_SetU16(&t1,swf->frameRate);
+ swf_SetU16(&t1,swf->frameCount);
+
+ if (writer)
+ {
+ int ret = writer->write(writer,b,swf_GetTagLen(&t1));
+ if (ret!=swf_GetTagLen(&t1))
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr, "ret:%d\n",ret);
+ perror("write:");
+ fprintf(stderr,"WriteSWF() failed: Header.\n");
+ #endif
+ return -1;
+ }
+
+ t = swf->firstTag;
+ while (t)
+ { if (swf_WriteTag2(writer, t)<0) return -1;
+ t = swf_NextTag(t);
+ }
+ if(swf->compressed != 8)
+ writer->finish(writer); // flush zlib buffers - only if _we_ initialized that writer.
+ }
+ }
+ return (int)fileSize;
+}
+
+int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
+{
+ struct writer_t writer;
+ swf->compressed = 0;
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
+ return swf_WriteSWF2(&writer, swf);
+ }
+ writer_init_filewriter(&writer, handle);
+ return swf_WriteSWF2(&writer, swf);
+}
+
+int swf_WriteSWC(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
+{
+ struct writer_t writer;
+ swf->compressed = 1;
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
+ return swf_WriteSWF2(&writer, swf);
+ }
+ writer_init_filewriter(&writer, handle);
+ return swf_WriteSWF2(&writer, swf);
+}
+
+int swf_WriteHeader2(struct writer_t*writer,SWF * swf)
+{
+ SWF myswf;
+ memcpy(&myswf,swf,sizeof(SWF));
+ myswf.firstTag = 0;
+ return swf_WriteSWF2(writer, &myswf);
+}
+
+int swf_WriteHeader(int handle,SWF * swf)
+{
+ SWF myswf;
+ memcpy(&myswf,swf,sizeof(SWF));
+ myswf.firstTag = 0;
+ return swf_WriteSWF(handle, &myswf);
+}
+
+int swf_WriteCGI(SWF * swf)
+{ int len;
+ char s[1024];
+
+ len = swf_WriteSWF(-1,swf);
+
+ if (len<0) return -1;
+
+ sprintf(s,"Content-type: application/x-shockwave-flash\n"
+ "Accept-Ranges: bytes\n"
+ "Content-Length: %lu\n"
+ "Expires: Thu, 13 Apr 2000 23:59:59 GMT\n"
+ "\n",len);
+
+ write(fileno(stdout),s,strlen(s));
+ return swf_WriteSWF(fileno(stdout),swf);
+}
+
+void swf_FreeTags(SWF * swf) // Frees all malloc'ed memory for tags
+{ TAG * t = swf->firstTag;
+
+ while (t)
+ { TAG * tnew = t->next;
+ if (t->data) free(t->data);
+ free(t);
+ t = tnew;
+ }
+}
+
+// include advanced functions
+
+#include "modules/swfdump.c"
+#include "modules/swfshape.c"
+#include "modules/swftext.c"
+#include "modules/swffont.c"
+#include "modules/swfobject.c"
+#include "modules/swfbutton.c"
+#include "modules/swftools.c"
+#include "modules/swfcgi.c"
+#include "modules/swfbits.c"
+#include "modules/swfaction.c"
+#include "modules/swfsound.c"
+#include "modules/swfdraw.c"
git.asbjorn.biz / swftools.git / blobdiff