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Code Issues Releases Activity

Support decoding raw 2bpp in mov, fixes issue 1528.

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Originally committed as revision 21027 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Carl Eugen Hoyos 2010-01-05 01:11:45 +00:00
parent 0a1e15109a
commit 4235c98e57
1 changed files with 11 additions and 1 deletions
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12
libavcodec/rawdec.c
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@ -47,6 +47,7 @@ static const PixelFormatTag pixelFormatBpsAVI[] = {
static const PixelFormatTag pixelFormatBpsMOV[] = {
{ PIX_FMT_MONOWHITE, 1 },
{ PIX_FMT_PAL8, 2 },
{ PIX_FMT_PAL8, 4 },
{ PIX_FMT_PAL8, 8 },
// FIXME swscale does not support 16 bit in .mov, sample 16bit.mov
@ -115,15 +116,24 @@ static int raw_decode(AVCodecContext *avctx,
frame->top_field_first = avctx->coded_frame->top_field_first;
//4bpp raw in avi and mov (yes this is ugly ...)
if(avctx->bits_per_coded_sample == 4 && avctx->pix_fmt==PIX_FMT_PAL8 &&
if((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
avctx->pix_fmt==PIX_FMT_PAL8 &&
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))){
int i;
uint8_t *dst = context->buffer + 256*4;
buf_size = context->length - 256*4;
if (avctx->bits_per_coded_sample == 4){
for(i=0; 2*i+1 < buf_size; i++){
dst[2*i+0]= buf[i]>>4;
dst[2*i+1]= buf[i]&15;
}
} else
for(i=0; 4*i+3 < buf_size; i++){
dst[4*i+0]= buf[i]>>6;
dst[4*i+1]= buf[i]>>4&3;
dst[4*i+2]= buf[i]>>2&3;
dst[4*i+3]= buf[i] &3;
}
buf= dst;
}