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| author | rcombs <rcombs@rcombs.me> | 2021-12-23 03:49:27 -0600 |
|---|---|---|
| committer | rcombs <rcombs@rcombs.me> | 2022-01-04 19:39:22 -0600 |
| commit | f8e284be69d6eae480c6d7291763b840959b7bf1 (patch) | |
| tree | a63c777b33ba068e96c63e73c55dc2c9cf290e95 | |
| parent | bb4f19f2a27ec2170dee852f7f307fcbc51faba9 (diff) | |
| download | ffmpeg-f8e284be69d6eae480c6d7291763b840959b7bf1.tar.gz | |
swscale: introduce isSwappedChroma
| -rw-r--r-- | libswscale/swscale_internal.h | 19 | ||||
| -rw-r--r-- | libswscale/tests/pixdesc_query.c | 1 | ||||
| -rw-r--r-- | tests/ref/fate/sws-pixdesc-query | 5 |
3 files changed, 25 insertions, 0 deletions
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h index b4acaceebd..3a78d95ba6 100644 --- a/libswscale/swscale_internal.h +++ b/libswscale/swscale_internal.h @@ -911,6 +911,25 @@ static av_always_inline int isDataInHighBits(enum AVPixelFormat pix_fmt) return 1; } +/* + * Identity formats where the chroma planes are swapped (CrCb order). + */ +static av_always_inline int isSwappedChroma(enum AVPixelFormat pix_fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + av_assert0(desc); + if (!isYUV(pix_fmt)) + return 0; + if ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) && desc->nb_components < 4) + return 0; + if (desc->nb_components < 3) + return 0; + if (!isPlanarYUV(pix_fmt) || isSemiPlanarYUV(pix_fmt)) + return desc->comp[1].offset > desc->comp[2].offset; + else + return desc->comp[1].plane > desc->comp[2].plane; +} + extern const uint64_t ff_dither4[2]; extern const uint64_t ff_dither8[2]; diff --git a/libswscale/tests/pixdesc_query.c b/libswscale/tests/pixdesc_query.c index dce2e50577..eb793877a0 100644 --- a/libswscale/tests/pixdesc_query.c +++ b/libswscale/tests/pixdesc_query.c @@ -46,6 +46,7 @@ static const struct { {"PlanarRGB", isPlanarRGB}, {"usePal", usePal}, {"DataInHighBits", isDataInHighBits}, + {"SwappedChroma", isSwappedChroma}, }; static int cmp_str(const void *a, const void *b) diff --git a/tests/ref/fate/sws-pixdesc-query b/tests/ref/fate/sws-pixdesc-query index a17284784f..76104bc5a6 100644 --- a/tests/ref/fate/sws-pixdesc-query +++ b/tests/ref/fate/sws-pixdesc-query @@ -964,3 +964,8 @@ DataInHighBits: y210be y210le +SwappedChroma: + nv21 + nv42 + yvyu422 + |