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Use chroma_sample_location in reading/writing yuv4mpeg

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Originally committed as revision 18796 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2009-05-11 04:35:15 +00:00
parent 580a7465fb
commit 56bb72dc3b
1 changed files with 12 additions and 5 deletions
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17
libavformat/yuv4mpeg.c
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@ -62,7 +62,9 @@ static int yuv4_generate_header(AVFormatContext *s, char* buf)
colorspace = " C411 XYSCSS=411";
break;
case PIX_FMT_YUV420P:
colorspace = (st->codec->codec_id == CODEC_ID_DVVIDEO)?" C420paldv XYSCSS=420PALDV":" C420mpeg2 XYSCSS=420MPEG2";
colorspace = (st->codec->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)?" C420paldv XYSCSS=420PALDV":
(st->codec->chroma_sample_location == AVCHROMA_LOC_LEFT) ?" C420mpeg2 XYSCSS=420MPEG2":
" C420jpeg XYSCSS=420JPEG";
break;
case PIX_FMT_YUV422P:
colorspace = " C422 XYSCSS=422";
@ -193,6 +195,7 @@ static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap)
ByteIOContext *pb = s->pb;
int width=-1, height=-1, raten=0, rated=0, aspectn=0, aspectd=0;
enum PixelFormat pix_fmt=PIX_FMT_NONE,alt_pix_fmt=PIX_FMT_NONE;
enum AVChromaLocation chroma_sample_location = AVCHROMA_LOC_UNSPECIFIED;
AVStream *st;
struct frame_attributes *s1 = s->priv_data;
@ -222,13 +225,16 @@ static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap)
tokstart=tokend;
break;
case 'C': // Color space
if (strncmp("420jpeg",tokstart,7)==0)
if (strncmp("420jpeg",tokstart,7)==0) {
pix_fmt = PIX_FMT_YUV420P;
else if (strncmp("420mpeg2",tokstart,8)==0)
chroma_sample_location = AVCHROMA_LOC_CENTER;
} else if (strncmp("420mpeg2",tokstart,8)==0) {
pix_fmt = PIX_FMT_YUV420P;
else if (strncmp("420paldv", tokstart, 8)==0)
chroma_sample_location = AVCHROMA_LOC_LEFT;
} else if (strncmp("420paldv", tokstart, 8)==0) {
pix_fmt = PIX_FMT_YUV420P;
else if (strncmp("411", tokstart, 3)==0)
chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
} else if (strncmp("411", tokstart, 3)==0)
pix_fmt = PIX_FMT_YUV411P;
else if (strncmp("422", tokstart, 3)==0)
pix_fmt = PIX_FMT_YUV422P;
@ -332,6 +338,7 @@ static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_RAWVIDEO;
st->sample_aspect_ratio= (AVRational){aspectn, aspectd};
st->codec->chroma_sample_location = chroma_sample_location;
return 0;
}