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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-17 22:30:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-07-23 03:07:30 +0200 |
| commit | b7397857e20d5ad25e6c59a7d052bd61fe224e10 (patch) | |
| tree | a2ce9e434b4757bac0bb81c2e29b53e43ceda40d /libavcodec/utils.c | |
| parent | 4443213d2ea42fdf66a90c8d3b25293622d2c90a (diff) | |
| download | ffmpeg-b7397857e20d5ad25e6c59a7d052bd61fe224e10.tar.gz | |
avcodec: add avcodec_enum_to_chroma_pos()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/utils.c')
| -rw-r--r-- | libavcodec/utils.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/utils.c b/libavcodec/utils.c index ff26c5810c..0b33170079 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -338,6 +338,18 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height) *width = FFALIGN(*width, align); } +int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos) +{ + if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB) + return AVERROR(EINVAL); + pos--; + + *xpos = (pos&1) * 128; + *ypos = ((pos>>1)^(pos<4)) * 128; + + return 0; +} + int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align) |