[XviD-devel] Is it a bug in colorspace?
Christoph Nägeli
chn at kbw.ch
Sun Dec 28 12:40:28 CET 2003
Hi,
I'm not quite sure what's wrong with your code but here's the code that
works fine for me:
- decoder is the the decoder instance returned from xvid_decore(...,
XVID_DEC_CREATE, ...)
- pixmap is the bitmap where the frame should be rendered.
- imagebuffer is the mpeg4 stream you wish to decode
- bufferlength the number of bytes in imagebuffer
- stride is the number of bytes from the beginning of a row to the
beginning of the next row
void DecompressXviDFrame(void *decoder, void *pixmap, void
*imagebuffer, int bufferlength, short stride)
{
int xresult;
xvid_dec_frame_t dec;
memset(&dec, 0, sizeof(xvid_dec_frame_t));
dec.version = XVID_VERSION;
dec.bitstream = imagebuffer;
dec.length = bufferlength;
dec.general = 0; // or XVID_LOWDELAY
dec.output.csp = XVID_CSP_ARGB;
dec.output.plane[0] = pixmap;
dec.output.plane[1] = NULL;
dec.output.plane[2] = NULL;
dec.output.stride[0] = stride;
dec.output.stride[1] = 0;
dec.output.stride[2] = 0;
xresult = xvid_decore(decoder, XVID_DEC_DECODE, &dec, NULL);
} // DecompressXviDFrame
If you like you can have a look at the source code of mplayer,
the file 'vd_xvid4.c' is the interface for the xvid library decoder.
Hope this helps
Christoph
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