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author | rcombs <rcombs@rcombs.me> | 2021-12-23 12:49:27 +0300 |
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committer | rcombs <rcombs@rcombs.me> | 2022-01-05 04:39:22 +0300 |
commit | f8e284be69d6eae480c6d7291763b840959b7bf1 (patch) | |
tree | a63c777b33ba068e96c63e73c55dc2c9cf290e95 /libswscale/swscale_internal.h | |
parent | bb4f19f2a27ec2170dee852f7f307fcbc51faba9 (diff) |
swscale: introduce isSwappedChroma
Diffstat (limited to 'libswscale/swscale_internal.h')
-rw-r--r-- | libswscale/swscale_internal.h | 19 |
1 files changed, 19 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]; |