diff options
| -rw-r--r-- | libavutil/pixdesc.c | 20 | ||||
| -rw-r--r-- | libavutil/pixdesc.h | 6 |
2 files changed, 26 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 */ diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h index 59fd1fff25..ca0722e1f4 100644 --- a/libavutil/pixdesc.h +++ b/libavutil/pixdesc.h @@ -189,6 +189,12 @@ char *av_get_pix_fmt_string (char *buf, int buf_size, enum AVPixelFormat pix_fmt int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc); /** + * Return the number of bits per pixel for the pixel format + * described by pixdesc, including any padding or unused bits. + */ +int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc); + +/** * @return a pixel format descriptor for provided pixel format or NULL if * this pixel format is unknown. */ |