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AASC can contain raw data in addition to MS-RLE

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Originally committed as revision 16011 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2008-12-06 08:57:31 +00:00
parent d23b28c78b
commit 56da1fd7d1
1 changed files with 19 additions and 1 deletions
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20
libavcodec/aasc.c
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@ -62,6 +62,7 @@ static int aasc_decode_frame(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
AascContext *s = avctx->priv_data;
int compr, i, stride;
s->frame.reference = 1;
s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
@ -70,7 +71,24 @@ static int aasc_decode_frame(AVCodecContext *avctx,
return -1;
}
ff_msrle_decode(avctx, &s->frame, 8, buf, buf_size);
compr = AV_RL32(buf);
buf += 4;
buf_size -= 4;
switch(compr){
case 0:
stride = (avctx->width * 3 + 3) & ~3;
for(i = avctx->height - 1; i >= 0; i--){
memcpy(s->frame.data[0] + i*s->frame.linesize[0], buf, avctx->width*3);
buf += stride;
}
break;
case 1:
ff_msrle_decode(avctx, &s->frame, 8, buf - 4, buf_size + 4);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);
return -1;
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;