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avformat/mxfenc: Set horizontal chroma subsample value from pixel format if available 

Reviewed-by: tim nicholson <nichot20@yahoo.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-16 20:02:01 +02:00
parent 58afb3128b
commit e32d832a82
1 changed files with 5 additions and 2 deletions
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7
libavformat/mxfenc.c
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@ -79,6 +79,7 @@ typedef struct MXFStreamContext {
int interlaced; ///< whether picture is interlaced
int field_dominance; ///< tff=1, bff=2
int component_depth;
int h_chroma_sub_sample;
int temporal_reordering;
AVRational aspect_ratio; ///< display aspect ratio
int closed_gop; ///< gop is closed, used in mpeg-2 frame parsing
@ -1027,7 +1028,7 @@ static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID ke
// horizontal subsampling
mxf_write_local_tag(pb, 4, 0x3302);
avio_wb32(pb, 2);
avio_wb32(pb, sc->h_chroma_sub_sample);
// frame layout
mxf_write_local_tag(pb, 1, 0x320C);
@ -2035,9 +2036,11 @@ static int mxf_write_header(AVFormatContext *s)
AVRational rate, tbc = st->time_base;
// Default component depth to 8
sc->component_depth = 8;
sc->h_chroma_sub_sample = 2;
if (pix_desc) {
sc->component_depth = pix_desc->comp[0].depth_minus1 + 1;
sc->component_depth = pix_desc->comp[0].depth_minus1 + 1;
sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
}
mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;