HEVC scaling lists are used for the scaling process for transform coefficients. V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED has to set when they are encoded in the bitstream. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx> --- Note: V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED is not change by this patch. There is a thread about the naming/usage of this flag here: https://lore.kernel.org/linux-arm-kernel/20210610154442.806107-8-benjamin.gaignard@xxxxxxxxxxxxx/ but that doesn't concern the scaling matrix control by itself. version 2: - Fix structure name in ext-ctrls-codec.rst .../media/v4l/ext-ctrls-codec.rst | 45 +++++++++++++++++++ .../media/v4l/vidioc-queryctrl.rst | 6 +++ drivers/media/v4l2-core/v4l2-ctrls-core.c | 6 +++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 4 ++ include/media/hevc-ctrls.h | 11 +++++ 5 files changed, 72 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 8c6e2a11ed95..d4f40bb85263 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -3068,6 +3068,51 @@ enum v4l2_mpeg_video_hevc_size_of_length_field - \normalsize +``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (struct)`` + Specifies the HEVC scaling matrix parameters used for the scaling process + for transform coefficients. + These matrix and parameters are defined according to :ref:`hevc`. + They are described in section 7.4.5 "Scaling list data semantics" of + the specification. + +.. c:type:: v4l2_ctrl_hevc_scaling_matrix + +.. raw:: latex + + \scriptsize + +.. tabularcolumns:: |p{5.4cm}|p{6.8cm}|p{5.1cm}| + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_hevc_scaling_matrix + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``scaling_list_4x4[6][16]`` + - + * - __u8 + - ``scaling_list_8x8[6][64]`` + - + * - __u8 + - ``scaling_list_16x16[6][64]`` + - + * - __u8 + - ``scaling_list_32x32[2][64]`` + - + * - __u8 + - ``scaling_list_dc_coef_16x16[6]`` + - + * - __u8 + - ``scaling_list_dc_coef_32x32[2]`` + - + +.. raw:: latex + + \normalsize + .. c:type:: v4l2_hevc_dpb_entry .. raw:: latex diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index f9ecf6276129..2f491c17dd5d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -495,6 +495,12 @@ See also the examples in :ref:`control`. - n/a - A struct :c:type:`v4l2_ctrl_hevc_slice_params`, containing HEVC slice parameters for stateless video decoders. + * - ``V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX`` + - n/a + - n/a + - n/a + - A struct :c:type:`v4l2_ctrl_hevc_scaling_matrix`, containing HEVC + scaling matrix for stateless video decoders. * - ``V4L2_CTRL_TYPE_VP8_FRAME`` - n/a - n/a diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c index c4b5082849b6..70adfc1b9c81 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -687,6 +687,9 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx, break; + case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX: + break; + case V4L2_CTRL_TYPE_AREA: area = p; if (!area->width || !area->height) @@ -1240,6 +1243,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS: elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params); break; + case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX: + elem_size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix); + break; case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS: elem_size = sizeof(struct v4l2_ctrl_hevc_decode_params); break; diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index b6344bbf1e00..cb29c2a7fabe 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -996,6 +996,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set"; case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set"; case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters"; + case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX: return "HEVC Scaling Matrix"; case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS: return "HEVC Decode Parameters"; case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode"; case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code"; @@ -1488,6 +1489,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: *type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS; break; + case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX: + *type = V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX; + break; case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS: *type = V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS; break; diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h index 53c0038c792b..0e5c4a2eecff 100644 --- a/include/media/hevc-ctrls.h +++ b/include/media/hevc-ctrls.h @@ -19,6 +19,7 @@ #define V4L2_CID_MPEG_VIDEO_HEVC_SPS (V4L2_CID_CODEC_BASE + 1008) #define V4L2_CID_MPEG_VIDEO_HEVC_PPS (V4L2_CID_CODEC_BASE + 1009) #define V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS (V4L2_CID_CODEC_BASE + 1010) +#define V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (V4L2_CID_CODEC_BASE + 1011) #define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS (V4L2_CID_CODEC_BASE + 1012) #define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (V4L2_CID_CODEC_BASE + 1015) #define V4L2_CID_MPEG_VIDEO_HEVC_START_CODE (V4L2_CID_CODEC_BASE + 1016) @@ -27,6 +28,7 @@ #define V4L2_CTRL_TYPE_HEVC_SPS 0x0120 #define V4L2_CTRL_TYPE_HEVC_PPS 0x0121 #define V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS 0x0122 +#define V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX 0x0123 #define V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS 0x0124 enum v4l2_mpeg_video_hevc_decode_mode { @@ -224,6 +226,15 @@ struct v4l2_ctrl_hevc_decode_params { __u64 flags; }; +struct v4l2_ctrl_hevc_scaling_matrix { + __u8 scaling_list_4x4[6][16]; + __u8 scaling_list_8x8[6][64]; + __u8 scaling_list_16x16[6][64]; + __u8 scaling_list_32x32[2][64]; + __u8 scaling_list_dc_coef_16x16[6]; + __u8 scaling_list_dc_coef_32x32[2]; +}; + /* MPEG-class control IDs specific to the Hantro driver as defined by V4L2 */ #define V4L2_CID_CODEC_HANTRO_BASE (V4L2_CTRL_CLASS_CODEC | 0x1200) /* -- 2.25.1
