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feat(ffmpeg): Read CICP metadata, and add test (AcademySoftwareFoundation#4882)
The actual CICP reading code is trivial. Also recognize mkv (Matroska) extension for the test. Add test using Matroska + VP9, to maximize the chance of an ffmpeg build supporting them. They are royalty free, built into ffmpeg and relatively old. Signed-off-by: Brecht Van Lommel <brecht@blender.org> Signed-off-by: Vlad (Kuzmin) Erium <libalias@gmail.com> Signed-off-by: Vlad <shaamaan@gmail.com>
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‎src/cmake/testing.cmake‎

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@@ -250,6 +250,9 @@ macro (oiio_add_all_tests)
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ENABLEVAR ENABLE_FITS
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IMAGEDIR fits-images
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URL http://www.cv.nrao.edu/fits/data/tests/)
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oiio_add_tests (ffmpeg
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ENABLEVAR ENABLE_FFMPEG
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FOUNDVAR FFmpeg_FOUND)
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oiio_add_tests (gif
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FOUNDVAR GIF_FOUND ENABLEVAR ENABLE_GIF
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IMAGEDIR oiio-images/gif URL "Recent checkout of OpenImageIO-images")

‎src/doc/builtinplugins.rst‎

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@@ -1433,6 +1433,9 @@ Some special attributes are used for movie files:
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* - ``ffmpeg:TimeCode``
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- string
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- Start time timecode
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* - ``CICP``
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- int[4]
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- Coding-independent code points to describe the color profile.
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‎src/ffmpeg.imageio/ffmpeginput.cpp‎

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@@ -180,9 +180,9 @@ ffmpeg_input_imageio_create()
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// QuickTime / MOV
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// raw MPEG-4 video
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// MPEG-1 Systems / MPEG program stream
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OIIO_EXPORT const char* ffmpeg_input_extensions[] = {
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"avi", "mov", "qt", "mp4", "m4a", "3gp", "3g2", "mj2", "m4v", "mpg", nullptr
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};
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OIIO_EXPORT const char* ffmpeg_input_extensions[]
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= { "avi", "mov", "qt", "mp4", "m4a", "3gp",
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"3g2", "mj2", "m4v", "mpg", "mkv", nullptr };
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OIIO_PLUGIN_EXPORTS_END
@@ -531,6 +531,12 @@ FFmpegInput::open(const std::string& name, ImageSpec& spec)
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m_spec.attribute("oiio:BitsPerSample",
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m_codec_context->bits_per_raw_sample);
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m_spec.attribute("ffmpeg:codec_name", m_codec_context->codec->long_name);
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/* The ffmpeg enums are documented to match CICP values, except the color range. */
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const int cicp[4]
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= { m_codec_context->color_primaries, m_codec_context->color_trc,
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m_codec_context->colorspace,
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m_codec_context->color_range == AVCOL_RANGE_MPEG ? 0 : 1 };
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m_spec.attribute("CICP", TypeDesc(TypeDesc::INT, 4), cicp);
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m_nsubimages = m_frames;
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spec = m_spec;
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m_filename = name;

‎testsuite/ffmpeg/ref/out-ffmpeg-6.1.txt‎

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Reading ref/vp9_display_p3.mkv
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ref/vp9_display_p3.mkv : 192 x 108, 3 channel, uint8 FFmpeg movie
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7 subimages: 192x108 [u8,u8,u8]
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subimage 0: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: E65FAFBDA14543571188F8A84F75E1567E13148C
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 1: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 8D54A542C4E6A47A4F8829993001786BA62288DF
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 2: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 8D54A542C4E6A47A4F8829993001786BA62288DF
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 3: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 8D54A542C4E6A47A4F8829993001786BA62288DF
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 4: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: D9B0B8782048AEE24C4DF767E2B0969EBAB9D36B
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 5: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: C6B5666BB0A937A59762B8FE846BF50FED40889E
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 6: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 63516D95A1BB56E9E9483F9BCFC4305851A8BC54
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7

‎testsuite/ffmpeg/ref/out-ffmpeg8.0.txt‎

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Reading ref/vp9_display_p3.mkv
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ref/vp9_display_p3.mkv : 192 x 108, 3 channel, uint8 FFmpeg movie
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7 subimages: 192x108 [u8,u8,u8]
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subimage 0: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: C882152FF48CB068931C2710175659A9D0493C08
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 1: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 1E2EB62F7BDD2DAC5C6FBDE582EE19978DC7C290
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 2: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 1E2EB62F7BDD2DAC5C6FBDE582EE19978DC7C290
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 3: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 1E2EB62F7BDD2DAC5C6FBDE582EE19978DC7C290
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 4: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 35565DB895AB1CA413192B7F25A1890718CFC0F5
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 5: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 338C9A82B74CE3B291DAD6564AE7C060AE6D9267
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7
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subimage 6: 192 x 108, 3 channel, uint8 FFmpeg movie
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SHA-1: 90BC91EAA745A9C897EEDEC0D34BAAF1D40B1C7C
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channel list: R, G, B
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CICP: 12, 1, 1, 1
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DATE: "2025/09/13 21:58:33"
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ENCODER: "Lavf61.7.100"
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FramesPerSecond: 24/1 (24)
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SCENE: "Scene"
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ffmpeg:codec_name: "Google VP9"
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oiio:BitsPerSample: 0
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oiio:Movie: 1
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oiio:subimages: 7

‎testsuite/ffmpeg/ref/vp9_display_p3.mkv‎

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‎testsuite/ffmpeg/run.py‎

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#!/usr/bin/env python
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# Copyright Contributors to the OpenImageIO project.
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# SPDX-License-Identifier: Apache-2.0
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# https://github.com/AcademySoftwareFoundation/OpenImageIO
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imagedir = "ref/"
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files = [ "vp9_display_p3.mkv" ]
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for f in files:
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command = command + info_command (os.path.join(imagedir, f))

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