/* vi: set sts=2 sw=2 :*/
-
/* rfxswf.c
Library for creating and reading SWF files or parts of it.
Part of the swftools package.
- Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
-
- This file is distributed under the GPL, see file COPYING for details
+ 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_LIBJPEG
-#ifdef HAVE_JPEGLIB_H
+#ifdef HAVE_JPEGLIB
#define HAVE_BOOLEAN
#include <jpeglib.h>
-#define _JPEGLIB_INCLUDED_
-#endif // HAVE_JPEGLIB_H
-#endif // HAVE_LIBJPEG
+#endif // HAVE_JPEGLIB
-#ifdef HAVE_LIBZ
-#ifdef HAVE_ZLIB_H
+#ifdef HAVE_ZLIB
#include <zlib.h>
-#define _ZLIB_INCLUDED_
-#endif // HAVE_ZLIB_H
-#endif // HAVE_LIBZ
+#endif // HAVE_ZLIB
-#define LAME
+#ifndef RFXSWF_DISABLESOUND
+#ifdef HAVE_LAME
#include "lame/lame.h"
+#endif
+#endif
#include "./bitio.h"
+#include "./MD5.h"
// internal constants
TAG * swf_NextTag(TAG * t) { return t->next; }
TAG * swf_PrevTag(TAG * t) { return t->prev; }
-int swf_GetFrameNo(TAG * t) { return t->frame; }
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]); }
#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
void swf_GetRGB(TAG * t, RGBA * col)
{
RGBA dummy;
- if(!col);
+ if(!col)
col = &dummy;
col->r = swf_GetU8(t);
col->g = swf_GetU8(t);
{
GRADIENT dummy;
int t;
+ if(!tag) {
+ memset(gradient, 0, sizeof(GRADIENT));
+ return;
+ }
if(!gradient)
gradient = &dummy;
gradient->num = swf_GetU8(tag);
}
}
+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) n = 0; else
if (v&m)
- { while (v&m)
+ { if(v == 0xffffffff) n = 1;
+ else
+ while (v&m)
{ n--;
m>>=1;
- if (!m) break;
}
}
else
- { while (!(v&m))
+ { if(v == 0x00000000) n = 0;
+ else
+ while (!(v&m))
{ n--;
m>>=1;
- if (!m) break;
}
}
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);
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;
return 0;
}
-int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
-int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
+//int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
+//int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
-// Tag List Manipulating Functions
+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_UpdateFrame(TAG * t,S8 delta)
-// returns number of frames
-{ int res = -1;
- while (t)
- { t->frame+=delta;
- res = t->frame;
- t = t->next;
- }
- return res;
+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 * swf_InsertTag(TAG * after,U16 id) // updates frames, if nescessary
+// Tag List Manipulating Functions
+
+TAG * swf_InsertTag(TAG * after,U16 id)
{ TAG * t;
t = (TAG *)malloc(sizeof(TAG));
t->id = id;
if (after)
- { t->frame = after->frame;
+ {
t->prev = after;
t->next = after->next;
after->next = t;
if (t->next) t->next->prev = t;
-
- if (id==ST_SHOWFRAME) swf_UpdateFrame(t->next,+1);
}
}
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->id==ST_SHOWFRAME) swf_UpdateFrame(t->next,-1);
-
if (t->prev) t->prev->next = t->next;
if (t->next) t->next->prev = t->prev;
}
if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
- // Sprite handling fix: Flaten sprite tree
+ // Sprite handling fix: Flatten sprite tree
t = (TAG *)malloc(sizeof(TAG));
}
if (prev)
- { t->frame = prev->frame+((prev->id==ST_SHOWFRAME)?1:0);
+ {
t->prev = prev;
prev->next = t;
}
}
do
{ t = swf_NextTag(t);
- if (t->id!=ST_DEFINESPRITE) len += swf_WriteTag(-1, 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) {
t->pos = 0;
id = swf_GetU16(t);
- //frames = 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&&t!=ST_END);
+ } while(t && level);
+ if(level)
+ fprintf(stderr, "rfxswf error: sprite doesn't end(1)\n");
- t = swf_NextTag(sprtag);
swf_SetU16(sprtag, id);
swf_SetU16(sprtag, frames);
+ t = swf_NextTag(sprtag);
+ level = 1;
+
do
{
- tmpid= t->id;
if(t->len<0x3f) {
swf_SetU16(sprtag,t->len|(t->id<<6));
} else {
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&&(tmpid!=ST_END));
+ 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)
+ 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
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) {
- 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 != 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);
+ }
- if(swf->compressed) {
- writer_init_zlibdeflate(&zwriter, writer);
- writer = &zwriter;
+ 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);
if (ret!=swf_GetTagLen(&t1))
{
#ifdef DEBUG_RFXSWF
- printf("ret:%d\n",ret);
+ fprintf(stderr, "ret:%d\n",ret);
perror("write:");
fprintf(stderr,"WriteSWF() failed: Header.\n");
#endif
{ if (swf_WriteTag2(writer, t)<0) return -1;
t = swf_NextTag(t);
}
- writer->finish(writer); //e.g. flush zlib buffers
+ if(swf->compressed != 8)
+ writer->finish(writer); // flush zlib buffers - only if _we_ initialized that writer.
}
}
return (int)fileSize;
{
struct writer_t writer;
swf->compressed = 0;
- if(handle<0)
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
return swf_WriteSWF2(&writer, swf);
+ }
writer_init_filewriter(&writer, handle);
return swf_WriteSWF2(&writer, swf);
}
{
struct writer_t writer;
swf->compressed = 1;
- if(handle<0)
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
return swf_WriteSWF2(&writer, swf);
+ }
writer_init_filewriter(&writer, handle);
return swf_WriteSWF2(&writer, swf);
}
#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/swfbits.c"
#include "modules/swfaction.c"
#include "modules/swfsound.c"
-
+#include "modules/swfdraw.c"
git.asbjorn.biz / swftools.git / blobdiff