diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0495-media-uapi-hevc-Add-scaling-matrix-control.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0495-media-uapi-hevc-Add-scaling-matrix-control.patch | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0495-media-uapi-hevc-Add-scaling-matrix-control.patch b/target/linux/bcm27xx/patches-5.4/950-0495-media-uapi-hevc-Add-scaling-matrix-control.patch new file mode 100644 index 0000000000..c2cf27a40e --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0495-media-uapi-hevc-Add-scaling-matrix-control.patch @@ -0,0 +1,150 @@ +From 70b5a28786215c996503210abd3e44c200771640 Mon Sep 17 00:00:00 2001 +From: Jernej Skrabec <jernej.skrabec@siol.net> +Date: Fri, 13 Dec 2019 17:04:25 +0100 +Subject: [PATCH] media: uapi: hevc: Add scaling matrix control + +Taken from https://patchwork.linuxtv.org/patch/60728/ +Changes (mainly documentation) have been requested. + +HEVC has a scaling matrix concept. Add support for it. + +Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> +--- + .../media/uapi/v4l/ext-ctrls-codec.rst | 41 +++++++++++++++++++ + .../media/uapi/v4l/pixfmt-compressed.rst | 1 + + drivers/media/v4l2-core/v4l2-ctrls.c | 10 +++++ + include/media/hevc-ctrls.h | 11 +++++ + 4 files changed, 63 insertions(+) + +--- a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst ++++ b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst +@@ -4174,6 +4174,47 @@ enum v4l2_mpeg_video_hevc_size_of_length + - ``padding[6]`` + - Applications and drivers must set this to zero. + ++``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (struct)`` ++ Specifies the scaling matrix (as extracted from the bitstream) for ++ the associated HEVC slice data. The bitstream parameters are ++ defined according to :ref:`hevc`, section 7.4.5 "Scaling list ++ data semantics". For further documentation, refer to the above ++ specification, unless there is an explicit comment stating ++ otherwise. ++ ++ .. note:: ++ ++ This compound control is not yet part of the public kernel API and ++ it is expected to change. ++ ++.. c:type:: v4l2_ctrl_hevc_scaling_matrix ++ ++.. 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]`` ++ - ++ + ``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (enum)`` + Specifies the decoding mode to use. Currently exposes slice-based and + frame-based decoding but new modes might be added later on. +--- a/Documentation/media/uapi/v4l/pixfmt-compressed.rst ++++ b/Documentation/media/uapi/v4l/pixfmt-compressed.rst +@@ -203,6 +203,7 @@ Compressed Formats + * ``V4L2_CID_MPEG_VIDEO_HEVC_SPS`` + * ``V4L2_CID_MPEG_VIDEO_HEVC_PPS`` + * ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS`` ++ * ``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX`` + See the :ref:`associated Codec Control IDs <v4l2-mpeg-hevc>`. + Buffers associated with this pixel format must contain the appropriate + number of macroblocks to decode a full corresponding frame. +--- a/drivers/media/v4l2-core/v4l2-ctrls.c ++++ b/drivers/media/v4l2-core/v4l2-ctrls.c +@@ -974,6 +974,7 @@ 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_MODE: return "HEVC Decode Mode"; + case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code"; + +@@ -1406,6 +1407,9 @@ void v4l2_ctrl_fill(u32 id, const char * + 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_UNIT_CELL_SIZE: + *type = V4L2_CTRL_TYPE_AREA; + *flags |= V4L2_CTRL_FLAG_READ_ONLY; +@@ -1852,6 +1856,9 @@ static int std_validate_compound(const s + zero_padding(*p_hevc_slice_params); + break; + ++ case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX: ++ break; ++ + case V4L2_CTRL_TYPE_AREA: + area = p; + if (!area->width || !area->height) +@@ -2540,6 +2547,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s + 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_AREA: + elem_size = sizeof(struct v4l2_area); + break; +--- 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_MPEG_BASE + 1008) + #define V4L2_CID_MPEG_VIDEO_HEVC_PPS (V4L2_CID_MPEG_BASE + 1009) + #define V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS (V4L2_CID_MPEG_BASE + 1010) ++#define V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (V4L2_CID_MPEG_BASE + 1011) + #define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (V4L2_CID_MPEG_BASE + 1015) + #define V4L2_CID_MPEG_VIDEO_HEVC_START_CODE (V4L2_CID_MPEG_BASE + 1016) + +@@ -26,6 +27,7 @@ + #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 + + enum v4l2_mpeg_video_hevc_decode_mode { + V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_SLICE_BASED, +@@ -209,4 +211,13 @@ struct v4l2_ctrl_hevc_slice_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]; ++}; ++ + #endif |