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media: hevc: Add scaling matrix control

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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@collabora.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Benjamin Gaignard 2021-07-15 17:12:22 +02:00 committed by Mauro Carvalho Chehab
parent d2e8654036
commit 7ba59fb6c3
5 changed files with 84 additions and 0 deletions
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57
Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
View File

@ -3088,6 +3088,63 @@ 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]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
* - __u8
- ``scaling_list_8x8[6][64]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
* - __u8
- ``scaling_list_16x16[6][64]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
* - __u8
- ``scaling_list_32x32[2][64]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
* - __u8
- ``scaling_list_dc_coef_16x16[6]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
* - __u8
- ``scaling_list_dc_coef_32x32[2]``
- Scaling list is used for the scaling process for transform
coefficients. The values on each scaling list are expected
in raster scan order.
.. raw:: latex
\normalsize
.. c:type:: v4l2_hevc_dpb_entry
.. raw:: latex

6
Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
View File

@ -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

6
drivers/media/v4l2-core/v4l2-ctrls-core.c
View File

@ -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;

4
drivers/media/v4l2-core/v4l2-ctrls-defs.c
View File

@ -997,6 +997,7 @@ 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";
@ -1490,6 +1491,9 @@ 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;

11
include/media/hevc-ctrls.h
View File

@ -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 {
@ -225,6 +227,15 @@ 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)
/*