int
SWFInput_readBits(SWFInput input, int number)
{
int ret = input->buffer;
if ( number == input->bufbits )
{
input->bufbits = 0;
input->buffer = 0;
return ret;
}
if ( number > input->bufbits )
{
number -= input->bufbits;
while( number > 8 )
{
ret <<= 8;
ret += SWFInput_getChar(input);
number -= 8;
}
input->buffer = SWFInput_getChar(input);
if ( number > 0 )
{
ret <<= number;
input->bufbits = 8-number;
ret += input->buffer >> (8-number);
input->buffer &= (1<<input->bufbits)-1;
}
static void
write_mp3(SWFSoundStreamBlock streamblock, SWFByteOutputMethod method, void *data)
{
SWFInput input = streamblock->stream->source.mp3.input;
int l = streamblock->length;
for ( ; l>0; --l )
method((unsigned char)SWFInput_getChar(input), data);
}
static void
writeSWFDBLBitmapToMethod(SWFBlock block,
SWFByteOutputMethod method, void *data)
{
SWFDBLBitmap dbl = (SWFDBLBitmap)block;
int i;
methodWriteUInt16(CHARACTERID(dbl), method, data);
/* just dump the rest of the file */
for ( i=block->length-2; i>0; --i )
method((unsigned char)SWFInput_getChar(dbl->input), data);
}
static void
write_flv(SWFSoundStreamBlock streamblock, SWFByteOutputMethod method, void *data)
{
SWFInput input;
FLVStream *flv = streamblock->stream->source.flv.stream;
FLVTag *tag = &streamblock->stream->source.flv.tag;
int tagOffset = streamblock->stream->source.flv.tagOffset;
int l = streamblock->length;
int ret;
if(tagOffset < 0)
{
ret = FLVStream_nextTagType(flv, tag, NULL, FLV_AUDIOTAG);
if(ret < 0)
return;
}
input = FLVTag_getPayloadInput(tag);
if(input == NULL)
return;
if(tagOffset > 0)
SWFInput_seek(input, tagOffset, SEEK_SET);
while( l>0 )
{
int ichar = SWFInput_getChar(input);
if(ichar != EOF)
{
method(ichar, data);
l--;
continue;
}
ret = FLVStream_nextTagType(flv, tag, tag, FLV_AUDIOTAG);
if(ret < 0)
return;
input = FLVTag_getPayloadInput(tag);
if(input == NULL)
return;
}
streamblock->stream->source.flv.tag = *tag;
streamblock->stream->source.flv.tagOffset = SWFInput_tell(input);
}
SWFDBLBitmap
newSWFDBLBitmap_fromInput(SWFInput input)
{
SWFDBLBitmap dbl;
int version;
int width, height;
dbl = (SWFDBLBitmap)malloc(sizeof(struct SWFDBLBitmap_s));
SWFCharacterInit((SWFCharacter)dbl);
CHARACTERID(dbl) = ++SWF_gNumCharacters;
BLOCK(dbl)->writeBlock = writeSWFDBLBitmapToMethod;
BLOCK(dbl)->complete = completeSWFDBLBitmap;
BLOCK(dbl)->dtor = (destroySWFBlockMethod) destroySWFCharacter;
dbl->input = input;
if ( SWFInput_getChar(input) != 'D' ||
SWFInput_getChar(input) != 'B' )
{
SWF_error("File is not a DBL file!");
}
version = SWFInput_getChar(input);
if ( version != 'L' && version != 'l' )
SWF_error("File is not a DBL file!");
switch ( SWFInput_getChar(input) )
{
case 1:
BLOCK(dbl)->type = SWF_DEFINELOSSLESS;
break;
case 2:
BLOCK(dbl)->type = SWF_DEFINELOSSLESS2;
break;
default:
SWF_error("Unexpected DBL type byte!");
}
if ( version == 'l' )
{
BLOCK(dbl)->length = SWFInput_getUInt32_BE(input);
BLOCK(dbl)->length += 2; /* character id */
}
else
{
/* first version used a 2-byte file length.. brilliant, eh? */
BLOCK(dbl)->length = SWFInput_getUInt16_BE(input);
BLOCK(dbl)->length += 2; /* character id */
}
SWFInput_getChar(input); /* format */
width = SWFInput_getUInt16(input);
height = SWFInput_getUInt16(input);
/* roll back to beginning of dbl data */
SWFInput_seek(input, -5, SEEK_CUR);
CHARACTER(dbl)->bounds = newSWFRect(0, width, 0, height);
return dbl;
}
