/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- swf_NextTag
- swf_PrevTag
- swf_GetTagID
- swf_GetTagLen
- swf_GetTagLenPtr
- swf_GetTagPos
- swf_SetTagPos
- swf_GetString
- swf_GetU8
- swf_GetU16
- swf_GetU32
- swf_GetBlock
- swf_SetBlock
- swf_SetU8
- swf_SetU16
- swf_SetS16
- swf_SetU32
- swf_GetBits
- swf_GetSBits
- reader_GetBits
- reader_GetSBits
- swf_SetBits
- swf_GetFixed
- swf_SetFixed
- swf_GetFixed8
- swf_SetFixed8
- swf_GetU30
- swf_SetU30
- swf_SetABCU32
- swf_GetABCU32
- swf_SetABCS32
- swf_GetABCS32
- swf_SetABCS32
- swf_GetS30
- swf_SetU30String
- swf_GetF16
- swf_SetF16
- F16toFloat
- floatToF16
- swf_GetD64
- swf_SetD64
- swf_GetU24
- swf_GetS24
- swf_SetU24
- swf_SetS24
- swf_SetRGB
- swf_GetRGB
- swf_SetRGBA
- swf_GetRGBA
- swf_GetGradient
- swf_SetGradient
- swf_FreeGradient
- swf_CountUBits
- swf_CountBits
- swf_GetRect
- reader_GetRect
- swf_SetRect
- swf_ClipRect
- swf_ExpandRect
- swf_ExpandRect2
- swf_ExpandRect3
- swf_TurnPoint
- swf_TurnRect
- swf_GetMatrix
- swf_SetMatrix
- swf_GetCXForm
- swf_SetCXForm
- swf_SetPassword
- swf_SetString
- swf_VerifyPassword
- swf_InsertTag
- swf_InsertTagBefore
- swf_ClearTag
- swf_ResetTag
- swf_CopyTag
- swf_DeleteTag
- swf_ReadTag
- swf_WriteTag2
- swf_WriteTag
- swf_DefineSprite_GetRealSize
- swf_UnFoldSprite
- swf_FoldSprite
- swf_IsFolded
- swf_FoldAll
- swf_UnFoldAll
- swf_OptimizeTagOrder
- swf_ReadSWF2
- swf_OpenSWF
- swf_ReadSWF
- swf_ReadABCfile
- WriteExtraTags
- swf_WriteSWF2
- swf_SaveSWF
- swf_WriteSWF
- swf_WriteHeader2
- swf_WriteHeader
- swf_WriteCGI
- swf_CopySWF
- swf_FreeTags
/* 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 "mem.h"
#include "rfxswf.h"
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif // HAVE_ZLIB
#ifndef RFXSWF_DISABLESOUND
#ifdef HAVE_LAME
#include "lame/lame.h"
#endif
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_IO_H
#include <io.h>
#endif
#include "./bitio.h"
#include "./MD5.h"
#include "./os.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; }
void swf_SetTagPos(TAG * t,U32 pos)
{ swf_ResetReadBits(t);
if (pos<=t->len) t->pos = pos;
else {
#ifdef DEBUG_RFXSWF
fprintf(stderr,"SetTagPos(%d) out of bounds: TagID = %i\n",pos, t->id);
#endif
}
}
char* swf_GetString(TAG*t)
{
int pos = t->pos;
while(t->pos < t->len && swf_GetU8(t));
/* make sure we always have a trailing zero byte */
if(t->pos == t->len) {
if(t->len == t->memsize) {
swf_ResetWriteBits(t);
swf_SetU8(t, 0);
t->len = t->pos;
}
t->data[t->len] = 0;
}
return (char*)&(t->data[pos]);
}
U8 swf_GetU8(TAG * t)
{ swf_ResetReadBits(t);
#ifdef DEBUG_RFXSWF
if ((int)t->pos>=(int)t->len)
{ fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);
*(int*)0=0;
return 0;
}
#endif
return t->data[t->pos++];
}
U16 swf_GetU16(TAG * t)
{ U16 res;
swf_ResetReadBits(t);
#ifdef DEBUG_RFXSWF
if ((int)t->pos>((int)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 ((int)t->pos>((int)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,const 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*)(rfx_realloc(t->data,newmem));
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;
}
void swf_SetS16(TAG * t,int v)
{
if(v>32767 || v<-32768) {
#ifdef DEBUG_RFXSWF
fprintf(stderr, "Warning: S16 overflow: %d\n", v);
#endif
}
swf_SetU16(t, (S16)v);
}
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;
#ifdef DEBUG_RFXSWF
if (t->pos>=t->len)
{ fprintf(stderr,"GetBits() out of bounds: TagID = %i, pos=%d, len=%d\n",t->id, t->pos, t->len);
int i,m=t->len>10?10:t->len;
for(i=-1;i<m;i++) {
fprintf(stderr, "(%d)%02x ", i, t->data[i]);
}
fprintf(stderr, "\n");
return res;
}
#endif
if (t->data[t->pos]&t->readBit) res|=1;
t->readBit>>=1;
nbits--;
if (!t->readBit)
{ if (nbits) t->readBit = 0x80;
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(reader_t*reader, int nbits)
{ return reader_readbits(reader, nbits);
}
S32 reader_GetSBits(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
double swf_GetFixed(TAG * t)
{
U16 low = swf_GetU16(t);
U16 high = swf_GetU16(t);
return high + low*(1/65536.0);
}
void swf_SetFixed(TAG * t, double f)
{
U16 fr = (U16)((f-(int)f)*65536);
swf_SetU16(t, fr);
swf_SetU16(t, (U16)f - (f<0 && fr!=0));
}
float swf_GetFixed8(TAG * t)
{
U8 low = swf_GetU8(t);
U8 high = swf_GetU8(t);
return (float)(high + low*(1/256.0));
}
void swf_SetFixed8(TAG * t, float f)
{
U8 fr = (U8)((f-(int)f)*256);
swf_SetU8(t, fr);
swf_SetU8(t, (U8)f - (f<0 && fr!=0));
}
U32 swf_GetU30(TAG*tag)
{
U32 shift = 0;
U32 s = 0;
int nr=0;
while(1) {
U8 b = swf_GetU8(tag);
nr++;
s|=(b&127)<<shift;
shift+=7;
if(!(b&128) || shift>=32)
break;
}
/*int nr2= swf_SetU30(0, s);
if(nr!=nr2) {
printf("Unsigned value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
}*/
return s;
}
int swf_SetU30(TAG*tag, U32 u)
{
int nr = 0;
do {
if(tag)
swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
u>>=7;
nr++;
} while(u);
return nr;
}
void swf_SetABCU32(TAG*tag, U32 u)
{
do {
swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
u>>=7;
} while(u);
}
U32 swf_GetABCU32(TAG*tag)
{
return swf_GetU30(tag);
}
void swf_SetABCS32(TAG*tag, S32 v)
{
swf_SetABCU32(tag, v);
}
S32 swf_GetABCS32(TAG*tag)
{
return swf_GetABCU32(tag);
}
#if 0
/*The AVM2 spec is just plain wrong, claiming that S32 values are sign
extended. They're not.
This wastes up to 4 bytes for every negative value. */
void swf_SetABCS32(TAG*tag, S32 s)
{
printf("write S32: %d\n", s);
S32 neg = s<0?-1:0;
U8 sign = s<0?0x40:0;
while(1) {
U8 val = s&0x7f;
U8 vsign = s&0x40;
s>>=7;
neg>>=7;
if(s==neg && vsign==sign) {
/* if the value we now write has the same sign as s
and all the remaining bits are equal to the sign of s
too, stop writing */
swf_SetU8(tag, val);
printf("put %02x\n", val);
break;
} else {
swf_SetU8(tag, 0x80 | val);
printf("put %02x\n", 0x80|val);
}
};
}
int swf_GetS30(TAG*tag)
{
U32 shift = 0;
U32 s = 0;
int nr=0;
while(1) {
U8 b = swf_GetU8(tag);
nr++;
nt i,m=t->len>10?10:t->len;
for(i=0;i<m;i++) {
fprintf(stderr, "%02x ", t->data[i]);
}
fprintf(stderr, "\n");
s|=(b&127)<<shift;
shift+=7;
if(!(b&128) || shift>=32) {
if(b&64) {
if(shift<32)
s|=0xffffffff<<shift;
}
break;
}
}
/* It's not uncommon for other applications (Flex for all negative numbers, and
Flash for -1) to generate a lot more bytes than would be necessary.
int nr2= swf_SetS30(0, s);
if(nr!=nr2) {
printf("Signed value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
}*/
return s;
}
#endif
int swf_SetU30String(TAG*tag, const char*str, int l)
{
int len=0;
len+=swf_SetU30(tag, l);
len+=l;
swf_SetBlock(tag, (void*)str, l);
return len;
}
float swf_GetF16(TAG * t)
{
U16 f1 = swf_GetU16(t);
if(!(f1&0x3ff)) return 0.0;
// IEEE 16 is 1-5-10
// IEEE 32 is 1-8-23
/* gcc 4.1.2 seems to require a union here. *(float*)u doesn't work */
union {
U32 u;
float f;
} f2;
U16 e = (f1>>10)&0x1f;
U16 m = f1&0x3ff;
/* find highest bit in mantissa */
int h=0;
while(!(m&0x400)) {
m<<=1;
h++;
}
m&=0x3ff;
e -= h;
e += 0x6f;
f2.u = (f1&0x8000)<<16; //sign
f2.u |= e<<23; //exponent
f2.u |= m<<13; //mantissa
return *(float*)&f2;
}
void swf_SetF16(TAG * t, float f)
{
union {
U32 u;
float f;
} v;
v.f = f;
U16 result = (v.u>>16)&0x8000; //sign
int exp = ((v.u>>23)&0xff)-0x7f+0x10;
U16 m = (v.u>>13)&0x3ff;
//fprintf(stderr, "%f: %04x sign, %d exp, %04x mantissa\n", f, result, exp, m);
if(exp<-10) {
// underflow (clamp to 0.0)
exp = 0;
m = 0;
} else if(exp<0) {
// partial underflow- strip some bits
m = (m|0x400)>>-exp;
exp = 0;
} else if(exp>=32) {
exp = 31;
m = 0x3ff;
fprintf(stderr, "Exponent overflow in FLOAT16 encoding\n");
} else {
exp++;
m = (m>>1)|0x200;
}
result |= exp<<10;
result |= m;
swf_SetU16(t, result);
}
float F16toFloat(U16 x)
{
TAG t;
t.data = (void*)&x;
t.readBit = 0;
t.pos = 0;
t.len = 2;
return swf_GetF16(&t);
}
float floatToF16(float f)
{
U16 u = 0;
TAG t;
t.data = (void*)&u;
t.len = 0;
t.memsize = 2;
t.writeBit = 0;
swf_SetF16(&t, f);
return u;
}
double swf_GetD64(TAG*tag)
{
/* FIXME: this is not big-endian compatible */
double value = *(double*)&tag->data[tag->pos];
swf_GetU32(tag);
swf_GetU32(tag);
return value;
}
int swf_SetD64(TAG*tag, double v)
{
/* FIXME: this is not big-endian compatible */
swf_SetU32(tag, ((U32*)&v)[0]);
swf_SetU32(tag, ((U32*)&v)[1]);
return 8;
}
int swf_GetU24(TAG*tag)
{
int b1 = swf_GetU8(tag);
int b2 = swf_GetU8(tag);
int b3 = swf_GetU8(tag);
return b3<<16|b2<<8|b1;
}
int swf_GetS24(TAG*tag)
{
int b1 = swf_GetU8(tag);
int b2 = swf_GetU8(tag);
int b3 = swf_GetU8(tag);
if(b3&0x80) {
return -1-((b3<<16|b2<<8|b1)^0xffffff);
} else {
return b3<<16|b2<<8|b1;
}
}
int swf_SetU24(TAG*tag, U32 v)
{
if(tag) {
if(v&0xff000000)
fprintf(stderr, "Error: Overflow in swf_SetU24()\n");
swf_SetU8(tag, v);
swf_SetU8(tag, v>>8);
swf_SetU8(tag, v>>16);
}
return 3;
}
int swf_SetS24(TAG*tag, U32 v)
{
if(tag) {
if(!(v&0xff000000))
return swf_SetU24(tag, v);
if((v&0xff000000)!=0xff000000) {
fprintf(stderr, "Error: Overflow in swf_SetS24()\n");
}
swf_SetU8(tag, v);
swf_SetU8(tag, v>>8);
swf_SetU8(tag, v>>16);
}
return 3;
}
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)
{
int t;
if(!tag) {
memset(gradient, 0, sizeof(GRADIENT));
return;
}
U8 num = swf_GetU8(tag) & 15;
if(gradient) {
gradient->num = num;
gradient->rgba = (RGBA*)rfx_calloc(sizeof(RGBA)*gradient->num);
gradient->ratios = (U8*)rfx_calloc(sizeof(gradient->ratios[0])*gradient->num);
}
for(t=0;t<num;t++)
{
U8 ratio = swf_GetU8(tag);
RGBA color;
if(!alpha)
swf_GetRGB(tag, &color);
else
swf_GetRGBA(tag, &color);
if(gradient) {
gradient->ratios[t] = ratio;
gradient->rgba[t] = color;
}
}
}
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]);
}
}
void swf_FreeGradient(GRADIENT* gradient)
{
if(gradient->ratios)
rfx_free(gradient->ratios);
if(gradient->rgba)
rfx_free(gradient->rgba);
memset(gradient, 0, sizeof(GRADIENT));
}
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(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) {
#ifdef DEBUG_RFXSWF
fprintf(stderr, "rfxswf: Warning: num_bits overflow in swf_SetRect\n");
#endif
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;
}
SRECT swf_ClipRect(SRECT border, SRECT r)
{
if(r.xmax > border.xmax) r.xmax = border.xmax;
if(r.ymax > border.ymax) r.ymax = border.ymax;
if(r.xmax < border.xmin) r.xmax = border.xmin;
if(r.ymax < border.ymin) r.ymax = border.ymin;
if(r.xmin > border.xmax) r.xmin = border.xmax;
if(r.ymin > border.ymax) r.ymin = border.ymax;
if(r.xmin < border.xmin) r.xmin = border.xmin;
if(r.ymin < border.ymin) r.ymin = border.ymin;
return r;
}
void swf_ExpandRect(SRECT*src, SPOINT add)
{
if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
src->xmin = add.x;
src->ymin = add.y;
src->xmax = add.x;
src->ymax = add.y;
if((add.x|add.y) == 0) src->xmax++; //make sure the bbox is not NULL anymore
return;
}
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((src->xmin | src->ymin | src->xmax | src->ymax)==0)
*src = *add;
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;
}
void swf_ExpandRect3(SRECT*src, SPOINT center, int radius)
{
if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
src->xmin = center.x-radius;
src->ymin = center.y-radius;
src->xmax = center.x+radius;
src->ymax = center.y+radius;
if((center.x|center.y|radius) == 0) src->xmax++; //make sure the bbox is not NULL anymore
return;
}
if(center.x - radius < src->xmin)
src->xmin = center.x - radius;
if(center.x + radius > src->xmax)
src->xmax = center.x + radius;
if(center.y - radius < src->ymin)
src->ymin = center.y - radius;
if(center.y + radius > src->ymax)
src->ymax = center.y + radius;
}
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;
if(!m)
return r;
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) {
/* TODO: happens on AMD64 systems for normal values? */
#ifdef DEBUG_RFXSWF
fprintf(stderr,"rfxswf: Error: matrix values too large\n");
#endif
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) {
#ifdef DEBUG_RFXSWF
fprintf(stderr,"rfxswf: Error: matrix values too large\n");
#endif
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) {
#ifdef DEBUG_RFXSWF
fprintf(stderr,"rfxswf: Error: matrix values too large\n");
#endif
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)
{ 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 salt[3];
char* md5string;
#if defined(HAVE_LRAND48) && defined(HAVE_SRAND48) && defined(HAVE_TIME_H) && defined(HAVE_TIME)
srand48(time(0));
salt[0] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
salt[1] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
#else
salt[0] = 'l';
salt[1] = '8';
fprintf(stderr, "rfxswf: Warning- no usable random generator found\n");
fprintf(stderr, "Your password will be vulnerable to dictionary attacks\n");
#endif
salt[2] = 0;
md5string = crypt_md5(password, salt);
swf_SetU16(t,0);
swf_SetString(t, md5string);
}
void swf_SetString(TAG*t, const char* s)
{
if(!s) {
swf_SetU8(t, 0);
} else {
swf_SetBlock(t,(U8*)s,strlen(s)+1);
}
}
int swf_VerifyPassword(TAG * t, const char * password)
{
char*md5string1, *md5string2;
char*x;
char*salt;
int n;
if(t->len >= 5 && t->pos==0 &&
t->data[0] == 0 &&
t->data[1] == 0) {
swf_GetU16(t);
} else {
printf("%d %d %d %d\n", t->len, t->pos, t->data[0], t->data[1]);
}
md5string1 = swf_GetString(t);
if(strncmp(md5string1, "$1$",3 )) {
fprintf(stderr, "rfxswf: no salt in pw string\n");
return 0;
}
x = strchr(md5string1+3, '$');
if(!x) {
fprintf(stderr, "rfxswf: invalid salt format in pw string\n");
return 0;
}
n = x-(md5string1+3);
salt = (char*)rfx_alloc(n+1);
memcpy(salt, md5string1+3, n);
salt[n] = 0;
md5string2 = crypt_md5(password, salt);
rfx_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 *)rfx_calloc(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 *)rfx_calloc(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) rfx_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;
}
TAG* swf_CopyTag(TAG*tag, TAG*to_copy)
{
tag = swf_InsertTag(tag, to_copy->id);
swf_SetBlock(tag, to_copy->data, to_copy->len);
return tag;
}
TAG* swf_DeleteTag(SWF*swf, TAG * t)
{
TAG*next = t->next;
if (swf && swf->firstTag==t)
swf->firstTag = t->next;
if (t->prev) t->prev->next = t->next;
if (t->next) t->next->prev = t->prev;
if (t->data) rfx_free(t->data);
rfx_free(t);
return next;
}
TAG * swf_ReadTag(reader_t*reader, TAG * prev)
{ TAG * t;
U16 raw;
U32 len;
int id;
if (reader->read(reader, &raw, 2) !=2 ) return NULL;
raw = LE_16_TO_NATIVE(raw);
len = raw&0x3f;
id = raw>>6;
if (len==0x3f)
{
len = reader_readU32(reader);
}
if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
// Sprite handling fix: Flatten sprite tree
t = (TAG *)rfx_calloc(sizeof(TAG));
t->len = len;
t->id = id;
if (t->len)
{ t->data = (U8*)rfx_alloc(t->len);
t->memsize = t->len;
if (reader->read(reader, t->data, t->len) != t->len) {
#ifdef DEBUG_RFXSWF
fprintf(stderr, "rfxswf: Warning: Short read (tagid %d). File truncated?\n", t->id);
#endif
free(t->data);t->data=0;
free(t);
return NULL;
}
}
if (prev)
{
t->prev = prev;
prev->next = t;
}
return t;
}
int swf_DefineSprite_GetRealSize(TAG * t);
int swf_WriteTag2(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&&
(t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3);
if (writer)
{
#ifdef MEASURE
int oldpos = writer->pos;
#endif
if (short_tag)
{ raw[0] = LE_16_TO_NATIVE(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] = LE_16_TO_NATIVE((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;
}
writer_writeU32(writer, len);
}
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
#ifdef MEASURE
writer->flush(writer);
printf("TAG %s costs %d bytes\n", swf_TagGetName(t), writer->pos-oldpos);
#endif
}
return t->len+(short_tag?2:6);
}
int swf_WriteTag(int handle, TAG * t)
{
writer_t writer;
int len = 0;
if(handle<0)
return swf_WriteTag2(0, t);
writer_init_filewriter(&writer, handle);
len = swf_WriteTag2(&writer, t);
writer.finish(&writer);
return len;
}
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*)rfx_alloc(it->len);
it->memsize = it->len;
swf_GetBlock(t, it->data, it->len);
}
if(!level)
break;
}
rfx_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;
int level;
if(t->id!=ST_DEFINESPRITE)
return;
if(!t->len) {
#ifdef DEBUG_RFXSWF
fprintf(stderr, "Error: Sprite has no ID!");
#endif
return;
}
if(t->len>4) {
/* sprite is already folded */
return;
}
t->pos = 0;
id = swf_GetU16(t);
rfx_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&&
(t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3)
) {
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(0, 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;
if(tag->prev)
tag->prev->next = tag;
else
swf->firstTag = tag;
changes = 1;
}
}
if(tag->id == ST_END) {
level--;
}
tag = next;
}
} while(changes);
}
// Movie Functions
int swf_ReadSWF2(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;
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;
}
swf->compressed = 0; // derive from version number from now on
reader_GetRect(reader, &swf->movieSize);
reader->read(reader, &swf->frameRate, 2);
swf->frameRate = LE_16_TO_NATIVE(swf->frameRate);
reader->read(reader, &swf->frameCount, 2);
swf->frameCount = LE_16_TO_NATIVE(swf->frameCount);
/* read tags and connect to list */
t1.next = 0;
t = &t1;
while (t) {
t = swf_ReadTag(reader,t);
if(t && t->id == ST_FILEATTRIBUTES) {
swf->fileAttributes = swf_GetU32(t);
swf_ResetReadBits(t);
}
}
swf->firstTag = t1.next;
if(t1.next)
t1.next->prev = NULL;
}
return reader->pos;
}
SWF* swf_OpenSWF(char*filename)
{
int fi = open(filename, O_RDONLY|O_BINARY);
if(fi<0) {
fprintf(stderr, "Failed to open %s\n", filename);
return 0;
}
SWF* swf = rfx_alloc(sizeof(SWF));
swf_ReadSWF(fi, swf);
close(fi);
return swf;
}
int swf_ReadSWF(int handle, SWF * swf)
{
reader_t reader;
reader_init_filereader(&reader, handle);
return swf_ReadSWF2(&reader, swf);
}
void swf_ReadABCfile(char*filename, SWF*swf)
{
memset(swf, 0, sizeof(SWF));
swf->fileVersion=9;
swf->fileAttributes=FILEATTRIBUTE_AS3; //as3
TAG*tag = swf->firstTag = swf_InsertTag(0, ST_RAWABC);
memfile_t*file = memfile_open(filename);
swf_SetBlock(tag, file->data, file->len);
memfile_close(file);
}
int no_extra_tags = 0;
int WriteExtraTags(SWF*swf, writer_t*writer)
{
TAG*t = swf->firstTag;
TAG* has_fileattributes=0;
int has_scenedescription=0;
int has_version_8_action=0;
int has_version_9_action=0;
int len = 0;
while(t) {
if(t->id == ST_FILEATTRIBUTES)
has_fileattributes = t;
if(t->id == ST_SCENEDESCRIPTION)
has_scenedescription = 1;
if(t->id == ST_DOABC)
has_version_9_action=1;
/* FIXME: this doesn't yet find actionscript in buttons */
if(t->id == ST_DOACTION || t->id == ST_DOINITACTION)
has_version_8_action=1;
if(t->id == ST_PLACEOBJECT2 && t->len && (t->data[0]&0x80))
has_version_8_action=1;
t = t->next;
}
if(has_version_8_action && has_version_9_action) {
fprintf(stderr, "Warning: File contains both flash 8 and flash 9 actionscript\n");
}
if(swf->fileVersion >= 9) {
if(!has_fileattributes) {
U32 flags = swf->fileAttributes|FILEATTRIBUTE_AS3; // 16 = has symbolclass tag | 8 = actionscript3 | 1 = usenetwork
if(has_version_8_action && !has_version_9_action)
flags &= ~FILEATTRIBUTE_AS3;
TAG*fileattrib = swf_InsertTag(0, ST_FILEATTRIBUTES);
swf_SetU32(fileattrib, flags);
if(writer) {
if(swf_WriteTag2(writer, fileattrib)<0)
return -1;
} else {
len += swf_WriteTag(-1,fileattrib);
}
swf_DeleteTag(0, fileattrib);
} else {
if(swf->fileAttributes) {
/* if we're writing a file out again where we might have possible
modified the fileattributes in the header, adjust the tag data */
TAG*tt = swf_CopyTag(0,has_fileattributes);
U32 flags = swf_GetU32(tt) | swf->fileAttributes;
swf_ResetTag(tt, tt->id);
swf_SetU32(tt, flags);
if(swf_WriteTag2(writer, has_fileattributes)<0) return -1;
swf_DeleteTag(0, tt);
} else {
if(swf_WriteTag2(writer, has_fileattributes)<0)
return -1;
}
}
if(0 && !has_scenedescription) {
TAG*scene = swf_InsertTag(0, ST_SCENEDESCRIPTION);
swf_SetU16(scene, 1);
swf_SetString(scene, "Scene 1");
swf_SetU8(scene, 0);
if(writer) {
if(swf_WriteTag2(writer, scene)<0)
return -1;
} else {
len += swf_WriteTag(-1,scene);
}
swf_DeleteTag(0, scene);
}
}
return len;
}
int swf_WriteSWF2(writer_t*writer, SWF * swf) // Writes SWF to file, returns length or <0 if fails
{ U32 len;
TAG * t;
int frameCount=0;
writer_t zwriter;
int fileSize = 0;
int inSprite = 0;
int ret;
writer_t*original_writer = writer;
int writer_lastpos = 0;
if (!swf) return -1;
if (!writer) return -1; // the caller should provide a nullwriter, not 0, for querying SWF size
if(original_writer) writer_lastpos = original_writer->pos;
// Count Frames + File Size
len = 0;
t = swf->firstTag;
frameCount = 0;
if(swf->firstTag && !no_extra_tags) {
len += WriteExtraTags(swf, 0);
}
while(t) {
len += swf_WriteTag(-1,t);
if(t->id == ST_DEFINESPRITE && !swf_IsFolded(t)) inSprite++;
else if(t->id == ST_END && inSprite) inSprite--;
else if(t->id == ST_END && !inSprite) {
if(t->prev && t->prev->id!=ST_SHOWFRAME)
frameCount++;
}
else if(t->id == ST_SHOWFRAME && !inSprite) 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 .
It also means that we don't initialize our own zlib
writer, but assume the caller provided one.
*/
if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
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==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
writer_init_zlibdeflate(&zwriter, writer);
writer = &zwriter;
}
}
swf_SetRect(&t1,&swf->movieSize);
swf_SetU16(&t1,swf->frameRate);
swf_SetU16(&t1,swf->frameCount);
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;
}
if(swf->firstTag && !no_extra_tags) {
WriteExtraTags(swf, writer);
}
t = swf->firstTag;
while (t) {
if(no_extra_tags || t->id != ST_FILEATTRIBUTES) {
if(swf_WriteTag2(writer, t)<0)
return -1;
}
t = t->next;
}
if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6) || swf->compressed==8) {
if(swf->compressed != 8) {
zwriter.finish(&zwriter);
return original_writer->pos - writer_lastpos;
}
return (int)fileSize;
} else {
return (int)fileSize;
}
}
}
int swf_SaveSWF(SWF * swf, char*filename)
{
int fi = open(filename, O_BINARY|O_RDWR|O_TRUNC|O_CREAT, 0777);
if(fi<0) {
perror(filename);
return 0;
}
if(swf_WriteSWF(fi, swf)<0) {
fprintf(stderr, "Unable to write output file: %s\n", filename);
return 0;
}
close(fi);
return 1;
}
int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
{
writer_t writer;
int len = 0;
if(handle<0) {
writer_init_nullwriter(&writer);
len = swf_WriteSWF2(&writer, swf);
return len;
}
writer_init_filewriter(&writer, handle);
len = swf_WriteSWF2(&writer, swf);
writer.finish(&writer);
return len;
}
int swf_WriteHeader2(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: %d\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);
}
SWF* swf_CopySWF(SWF*swf)
{
SWF*nswf = (SWF*)rfx_alloc(sizeof(SWF));
TAG*tag, *ntag;
memcpy(nswf, swf, sizeof(SWF));
nswf->firstTag = 0;
tag = swf->firstTag;
ntag = 0;
while(tag) {
ntag = swf_CopyTag(ntag, tag);
if(!nswf->firstTag)
nswf->firstTag = ntag;
tag = tag->next;
}
return nswf;
}
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) rfx_free(t->data);
rfx_free(t);
t = tnew;
}
swf->firstTag = 0;
}
// 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/swfabc.c"
//#include "modules/swfsound.c"
//#include "modules/swfdraw.c"
//#include "modules/swfrender.c"
//#include "modules/swffilter.c"