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| author | Anton Khirnov <anton@khirnov.net> | 2013-03-16 19:37:52 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2013-03-19 11:12:17 +0100 |
| commit | 2c328a907978b61949fd20f7c991803174337855 (patch) | |
| tree | c9b35c50f10bcdcd85ec28cc25ee8b8904c3b8dc | |
| parent | e5c32d6da7836c7c9bb8393cb4de7e0997a4363b (diff) | |
| download | ffmpeg-2c328a907978b61949fd20f7c991803174337855.tar.gz | |
pixdesc: add a function for counting planes in a pixel format.
| -rw-r--r-- | doc/APIchanges | 3 | ||||
| -rw-r--r-- | libavutil/pixdesc.c | 15 | ||||
| -rw-r--r-- | libavutil/pixdesc.h | 6 | ||||
| -rw-r--r-- | libavutil/version.h | 2 |
4 files changed, 25 insertions, 1 deletions
diff --git a/doc/APIchanges b/doc/APIchanges index 2c08af44af..91bbeecfa0 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -13,6 +13,9 @@ libavutil: 2012-10-22 API changes, most recent first: +2013-xx-xx - lavu 52.9.0 - pixdesc.h + Add av_pix_fmt_count_planes() function for counting planes in a pixel format. + 2013-xx-xx - lavfi 3.6.0 Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count. diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c index df906ac15a..e1fa87eee9 100644 --- a/libavutil/pixdesc.c +++ b/libavutil/pixdesc.c @@ -1473,3 +1473,18 @@ int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, return 0; } + +int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + int i, planes[4] = { 0 }, ret = 0; + + if (!desc) + return AVERROR(EINVAL); + + for (i = 0; i < desc->nb_components; i++) + planes[desc->comp[i].plane] = 1; + for (i = 0; i < FF_ARRAY_ELEMS(planes); i++) + ret += planes[i]; + return ret; +} diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h index 47e6bb838d..ef93bfed82 100644 --- a/libavutil/pixdesc.h +++ b/libavutil/pixdesc.h @@ -219,5 +219,11 @@ enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc); int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift); +/** + * @return number of planes in pix_fmt, a negative AVERROR if pix_fmt is not a + * valid pixel format. + */ +int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt); + #endif /* AVUTIL_PIXDESC_H */ diff --git a/libavutil/version.h b/libavutil/version.h index d519b50c78..6cbe7ef66d 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -37,7 +37,7 @@ */ #define LIBAVUTIL_VERSION_MAJOR 52 -#define LIBAVUTIL_VERSION_MINOR 8 +#define LIBAVUTIL_VERSION_MINOR 9 #define LIBAVUTIL_VERSION_MICRO 0 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ |