Messages in this thread Patch in this message | | | From | Stanimir Varbanov <> | Subject | [PATCH 2/3] docs: media: Document CLL and Mastering display | Date | Mon, 9 Nov 2020 19:31:52 +0200 |
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Document Content light level and Mastering display colour volume.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> --- .../media/v4l/ext-ctrls-codec.rst | 61 +++++++++++++++++++ 1 file changed, 61 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index ce728c757eaf..39d0aab5ca3d 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -4382,3 +4382,64 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - - Selecting this value specifies that HEVC slices are expected to be prefixed by Annex B start codes. According to :ref:`hevc` valid start codes can be 3-bytes 0x000001 or 4-bytes 0x00000001. + +``V4L2_CID_MPEG_VIDEO_HEVC_CLL_INFO (struct)`` + The Content Light Level defines upper bounds for the nominal target + brightness light level of the pictures. + +.. c:type:: v4l2_ctrl_hevc_cll_info + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_hevc_cll_info + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u16 + - ``max_content_light_level`` + - An upper bound on the maximum light level among all individual + samples for the pictures of coded video sequence, cd/m2. + * - __u16 + - ``max_pic_average_light_level`` + - An upper bound on the maximum average light level among the + samples for any idividual picture of coded video sequence, cd/m2. + +``V4L2_CID_MPEG_VIDEO_HEVC_MASTERING_DISPLAY (struct)`` + The mastering display defines the colour volume (the colour primaries, + white point and luminance range) of a display considered to be the + mastering display for current video content. + +.. c:type:: v4l2_ctrl_hevc_mastering_display + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_hevc_mastering_display + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u16 + - ``display_primaries_x[3]`` + - Specifies the normalized x chromaticity coordinate of the colour + primary component of the mastering display. + * - __u16 + - ``display_primaries_y[3]`` + - Specifies the normalized y chromaticity coordinate of the colour + primary component of the mastering display. + * - __u16 + - ``white_point_x`` + - Specifies the normalized x chromaticity coordinate of the white + point of the mastering display. + * - __u16 + - ``white_point_y`` + - Specifies the normalized y chromaticity coordinate of the white + point of the mastering display. + * - __u32 + - ``max_luminance`` + - Specifies the nominal maximum display luminance of the mastering + display. + * - __u32 + - ``min_luminance`` + - specifies the nominal minimum display luminance of the mastering + display. -- 2.17.1
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