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FFmpeg/tests/ref

History

Leo Izen 2548c32cc1 avcodec/png: use libavutil/csp.h for cHRM chunks ... The cHRM chunk is descriptive. That is, it describes the primaries that should be used to interpret the pixel data in the PNG file. This is notably different from Mastering Display Metadata, which describes which subset of the presented gamut is relevant. MDM describes a gamut and says colors outside the gamut are not required to be preserved, but it does not actually describe the gamut that the pixel data from the frame resides in. Thus, to decode a cHRM chunk present in a PNG file to Mastering Display Metadata is incorrect. This commit changes this behavior so the cHRM chunk, if present, is decoded to color metadata. For example, if the cHRM chunk describes BT.709 primaries, the resulting AVFrame will be tagged with AVCOL_PRI_BT709, as a description of its pixel data. To do this, it utilizes libavutil/csp.h, which exposes a funcction av_csp_primaries_id_from_desc, to detect which enum value accurately describes the white point and primaries represented by the cHRM chunk. This commit also changes pngenc.c to utilize the libavuitl/csp.h API, since it previously duplicated code contained in that API. Instead, taking advantage of the API that exists makes more sense. pngenc.c does properly utilize the color tags rather than incorrectly using MDM, so that required no change. Signed-off-by: Leo Izen <leo.izen@gmail.com>		2 years ago
..
acodec	tests/ref: Remove unused reference files	3 years ago
fate	avcodec/png: use libavutil/csp.h for cHRM chunks	2 years ago
lavf	avformat/oggenc: don't flush twice when the last packet is side data only	2 years ago
lavf-fate	avformat/matroskaenc: Don't waste bytes to Write Tag length fields	3 years ago
pixfmt	…
seek	avcodec/svq1enc: do not use ambiguous interframe mean symbols	2 years ago
vsynth	avcodec/svq1enc: output ident string in extradata field	2 years ago