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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-11-21 16:45:54 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-11-21 17:05:50 +0100 |
| commit | 649d8bd8a56d8bffe9dd3143cd48082ae187961a (patch) | |
| tree | c97d92cba511d3d479677fc0603f34abe08a3b89 /libavutil/pixdesc.c | |
| parent | ad9333d5ef82f74dc470744f19f1350fabc93aa4 (diff) | |
| download | ffmpeg-649d8bd8a56d8bffe9dd3143cd48082ae187961a.tar.gz | |
pixdesc: add av_get_padded_bits_per_pixel()
This will be needed to allow removing the PixFmtInfo table
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/pixdesc.c')
| -rw-r--r-- | libavutil/pixdesc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c index e5e3fa8551..c7ef57ccd8 100644 --- a/libavutil/pixdesc.c +++ b/libavutil/pixdesc.c @@ -1712,6 +1712,26 @@ int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc) return bits >> log2_pixels; } +int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc) +{ + int c, bits = 0; + int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h; + int steps[4] = {0}; + + for (c = 0; c < pixdesc->nb_components; c++) { + AVComponentDescriptor *comp = &pixdesc->comp[c]; + int s = c == 1 || c == 2 ? 0 : log2_pixels; + steps[comp->plane] = (comp->step_minus1 + 1) << s; + } + for (c = 0; c < 4; c++) + bits += steps[c]; + + if(!(pixdesc->flags & PIX_FMT_BITSTREAM)) + bits *= 8; + + return bits >> log2_pixels; +} + char *av_get_pix_fmt_string (char *buf, int buf_size, enum AVPixelFormat pix_fmt) { /* print header */ |