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Diffstat (limited to 'Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 81 |
1 files changed, 79 insertions, 2 deletions
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 454ecd9a0f83..00944e97d638 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -1182,6 +1182,18 @@ enum v4l2_mpeg_video_h264_entropy_mode - V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter should be chosen to meet both requirements. +``V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP (integer)`` + Minimum quantization parameter for the H264 B frame to limit B frame + quality to a range. Valid range: from 0 to 51. If + V4L2_CID_MPEG_VIDEO_H264_MIN_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP (integer)`` + Maximum quantization parameter for the H264 B frame to limit B frame + quality to a range. Valid range: from 0 to 51. If + V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter + should be chosen to meet both requirements. + ``V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP (integer)`` Quantization parameter for an I frame for MPEG4. Valid range: from 1 to 31. @@ -1501,6 +1513,26 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - Bit 16:32 - Layer number +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 0 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 1 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 2 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 3 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 4 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 5 for H264 encoder. + +``V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR (integer)`` + Indicates bit rate (bps) for hierarchical coding layer 6 for H264 encoder. .. _v4l2-mpeg-mpeg2: @@ -2628,11 +2660,11 @@ HEVC/H.265 Control IDs ``V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP (integer)`` Minimum quantization parameter for HEVC. - Valid range: from 0 to 51. + Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. ``V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP (integer)`` Maximum quantization parameter for HEVC. - Valid range: from 0 to 51. + Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. ``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP (integer)`` Quantization parameter for an I frame for HEVC. @@ -2649,6 +2681,42 @@ HEVC/H.265 Control IDs Valid range: [V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP, V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP]. +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP (integer)`` + Minimum quantization parameter for the HEVC I frame to limit I frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP (integer)`` + Maximum quantization parameter for the HEVC I frame to limit I frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP (integer)`` + Minimum quantization parameter for the HEVC P frame to limit P frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP (integer)`` + Maximum quantization parameter for the HEVC P frame to limit P frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP (integer)`` + Minimum quantization parameter for the HEVC B frame to limit B frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter + should be chosen to meet both requirements. + +``V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP (integer)`` + Maximum quantization parameter for the HEVC B frame to limit B frame + quality to a range. Valid range: from 0 to 51 for 8 bit and from 0 to 63 for 10 bit. + If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter + should be chosen to meet both requirements. + ``V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP (boolean)`` HIERARCHICAL_QP allows the host to specify the quantization parameter values for each temporal layer through HIERARCHICAL_QP_LAYER. This is @@ -3569,3 +3637,12 @@ 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_BASELAYER_PRIORITY_ID (integer)`` + Specifies a priority identifier for the NAL unit, which will be applied to + the base layer. By default this value is set to 0 for the base layer, + and the next layer will have the priority ID assigned as 1, 2, 3 and so on. + The video encoder can't decide the priority id to be applied to a layer, + so this has to come from client. + This is applicable to H264 and valid Range is from 0 to 63. + Source Rec. ITU-T H.264 (06/2019); G.7.4.1.1, G.8.8.1. |