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The ROI QP Map and rectangular configuration are supported. Signed-off-by: Ming Qian Signed-off-by: TaoJiang --- .../media/v4l/ext-ctrls-codec.rst | 136 ++++++++++++++++++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 46 ++++++ include/uapi/linux/v4l2-controls.h | 16 +++ 3 files changed, 198 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 4a379bd9e3fb..be0ce3e2f081 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -1667,6 +1667,142 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - Codecs need to always use the specified range, rather then a HW custom range. Applicable to encoders +``V4L2_CID_MPEG_VIDEO_ROI_MODE`` + (enum) + +enum v4l2_mpeg_video_roi_mode - + Indicates Video Encoding region-of-interest (ROI) Mode, enable different + encoding strategies based on selected areas within a frame. Choosing a + specific mode activates corresponding control or combinations of controls + to configure the ROI, e.g. for rectangle delta QP mode, you need to provide + V4L2_CID_MPEG_VIDEO_ROI_RECT and V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP. + Applicable to encoders. + + Possible values are: + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - ``V4L2_MPEG_VIDEO_ROI_MODE_NONE`` + - No ROI in the MPEG stream. Default mode. + * - ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP`` + - Rectangle ROI mode and specifies ROI delta QP. + When enabled, define one or more rectangular ROI areas + where QP delta is applied. The control + V4L2_CID_MPEG_VIDEO_ROI_RECT is used to set ROI areas + and V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP is used to + set QP delta value. + * - ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY`` + - Rectangle ROI mode and specifies ROI priority. + When enabled, define one or more rectangular ROI areas + where priority is applied. The control + V4L2_CID_MPEG_VIDEO_ROI_RECT is used to set ROI areas + and V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY is used to + set priority. + * - ``V4L2_MPEG_VIDEO_ROI_MODE_MAP_DELTA_QP`` + - Map ROI mode and specifies ROI delta QP. + When enabled, the whole frame is configured into a grid map + according to the ROI block region size in raster scan order, + and each region can have a QP delta applied. + The control V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP + is used to configure the ROI Map with QP delta values. + * - ``V4L2_MPEG_VIDEO_ROI_MODE_MAP_ABSOLUTE_QP`` + - Map ROI mode and specifies ROI absolute QP value. + When enabled, configure a grid ROI map where each region + has an absolute QP value assigned. The control + V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP is used to + configure the ROI Map with absolute QP values. + +``V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE (struct)`` + This read-only control returns the ROI block size in pixels. The struct + :c:type:`v4l2_area` provides the width and height in separate + fields. The resolution of the frame will be rounded up to be + aligned to this value when it's partitioned in blocks for QP + maps and the number of QP values in those maps will be the + number of blocks of these indicated pixel size that comprise + a full frame. This control depends on the encoding format, + and the detailed encoder hardware. + Applicable to encoders. + +``V4L2_CID_MPEG_VIDEO_ROI_RECT (struct)`` + A struct :c:type:`v4l2_rect` provides the rectangular region + described by the position of its top-left corner, the width + and the height. The unit is in pixels. And it should be aligned + to the ROI block size, which can be queried from + ``V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE``. If it is not aligned to + the ROI block size, then X,Y gets rounded down, and width/height up. + If the rectangle is outside the frame, then it will be ignored. + The maximum number of rectangular regions depends on the hardware. + This control is a dynamically sized array. + This control is applicable when ``V4L2_CID_MPEG_VIDEO_ROI_MODE`` + value is ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP`` or + ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY``. For overlapping + regions, the value that is first in the ROI array will have priority. + Applicable to encoders. + +``V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP (integer)`` + Specifies the ROI delta QP of a rectangular region. The delta QP + is the value that will be added on top of the frame level QP. + It can be positive (more distortion) or negative (less distortion) + values. This control is applicable when + ``V4L2_CID_MPEG_VIDEO_ROI_MODE`` value is + ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP``, and must be used + in combination with ``V4L2_CID_MPEG_VIDEO_ROI_RECT``. + This control is a dynamically sized array, and the array size + should match ``V4L2_CID_MPEG_VIDEO_ROI_RECT``. If the array sizes + do not match, then use the smallest size for both controls and + ignore the remaining elements in the larger array. + Applicable to encoders. + +``V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY (integer)`` + Specifies the ROI priority of a rectangular region. it can + be positive (more important) or negative (less important) + values and is compared with non-ROI region (taken as value 0). + This control is applicable when ``V4L2_CID_MPEG_VIDEO_ROI_MODE`` + value is ``V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY``, and must + be used in combination with ``V4L2_CID_MPEG_VIDEO_ROI_RECT``. + This control is a dynamically sized array, and the array size + should match ``V4L2_CID_MPEG_VIDEO_ROI_RECT``. If the array sizes + do not match, then use the smallest size for both controls and + ignore the remaining elements in the larger array. + Applicable to encoders. + +``V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP (integer)`` + Configure a frame-wide grid map that divides the entire + frame into blocks of the ROI block size, where each + region will have a QP delta applied. The ROI map is + arranged in raster scan order, and it's configured + as an integer array. The block size can be got from + ``V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE``. This control is a + dynamically sized array, the array size can be calculated + from video resolution and the ROI block size, and the + width and height should be rounded up to be aligned to + the block size. This control is applicable when + ``V4L2_CID_MPEG_VIDEO_ROI_MODE`` value is + ``V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP``. + If the array size is mismatch with the frame resolution, + the encoder should ignore the control completely. + Applicable to encoders. + +``V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP (integer)`` + Configure a frame-wide grid map that divides the entire + frame into blocks of the ROI block size, where each + region will have an absolute QP applied. The ROI map is + arranged in raster scan order, and it's configured + as an integer array. The block size can be got from + ``V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE``. This control is a + dynamically sized array, the array size can be calculated + from video resolution and the ROI block size, and the + width and height should be rounded up to be aligned to + the block size. This control is applicable when + ``V4L2_CID_MPEG_VIDEO_ROI_MODE`` value is + ``V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP``. + If the array size is mismatch with the frame resolution, + the encoder should ignore the control completely. + Applicable to encoders. + .. raw:: latex \normalsize diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index 1ea52011247a..4d89309bf8d0 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -612,6 +612,15 @@ const char * const *v4l2_ctrl_get_menu(u32 id) NULL, }; + static const char * const mpeg_video_roi_mode[] = { + "None", + "Rectangle Delta QP", + "Rectangle Priority", + "Map Delta QP", + "Map Absolute QP", + NULL, + }; + switch (id) { case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return mpeg_audio_sampling_freq; @@ -750,6 +759,8 @@ const char * const *v4l2_ctrl_get_menu(u32 id) return camera_orientation; case V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD_TYPE: return intra_refresh_period_type; + case V4L2_CID_MPEG_VIDEO_ROI_MODE: + return mpeg_video_roi_mode; default: return NULL; } @@ -971,6 +982,13 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Frame LTR Index"; case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: return "Use LTR Frames"; case V4L2_CID_MPEG_VIDEO_AVERAGE_QP: return "Average QP Value"; + case V4L2_CID_MPEG_VIDEO_ROI_MODE: return "Video ROI Mode"; + case V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE: return "Video ROI Block Size"; + case V4L2_CID_MPEG_VIDEO_ROI_RECT: return "Video ROI Rectangle Region"; + case V4L2_CID_MPEG_VIDEO_ROI_RECT_DELTA_QP: return "Video ROI Rectangle Delta QP"; + case V4L2_CID_MPEG_VIDEO_ROI_RECT_PRIORITY: return "Video ROI Rectangle Priority"; + case V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP: return "Video ROI Delta QP Map"; + case V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP: return "Video ROI Absolute QP Map"; case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value"; case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value"; @@ -1512,6 +1530,34 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, *type = V4L2_CTRL_TYPE_INTEGER; *flags |= V4L2_CTRL_FLAG_READ_ONLY; break; + case V4L2_CID_MPEG_VIDEO_ROI_MODE: + *type = V4L2_CTRL_TYPE_MENU; + *flags |= V4L2_CTRL_FLAG_UPDATE; + break; + case V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE: + *type = V4L2_CTRL_TYPE_AREA; + *flags |= V4L2_CTRL_FLAG_READ_ONLY; + break; + case V4L2_CID_MPEG_VIDEO_ROI_RECT: + *type = V4L2_CTRL_TYPE_RECT; + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY | V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; + break; + case V4L2_CID_MPEG_VIDEO_ROI_RECT_DELTA_QP: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY | V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; + break; + case V4L2_CID_MPEG_VIDEO_ROI_RECT_PRIORITY: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY | V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; + break; + case V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY | V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; + break; + case V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP: + *type = V4L2_CTRL_TYPE_INTEGER; + *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY | V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; + break; case V4L2_CID_PIXEL_RATE: *type = V4L2_CTRL_TYPE_INTEGER64; *flags |= V4L2_CTRL_FLAG_READ_ONLY; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index 974fd254e573..bf67d53af737 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -900,6 +900,22 @@ enum v4l2_mpeg_video_av1_level { #define V4L2_CID_MPEG_VIDEO_AVERAGE_QP (V4L2_CID_CODEC_BASE + 657) +enum v4l2_mpeg_video_roi_mode { + V4L2_MPEG_VIDEO_ROI_MODE_NONE, + V4L2_MPEG_VIDEO_ROI_MODE_RECT_DELTA_QP, + V4L2_MPEG_VIDEO_ROI_MODE_RECT_PRIORITY, + V4L2_MPEG_VIDEO_ROI_MODE_MAP_DELTA_QP, + V4L2_MPEG_VIDEO_ROI_MODE_MAP_ABSOLUTE_QP +}; + +#define V4L2_CID_MPEG_VIDEO_ROI_MODE (V4L2_CID_CODEC_BASE + 658) +#define V4L2_CID_MPEG_VIDEO_ROI_BLOCK_SIZE (V4L2_CID_CODEC_BASE + 659) +#define V4L2_CID_MPEG_VIDEO_ROI_RECT (V4L2_CID_CODEC_BASE + 660) +#define V4L2_CID_MPEG_VIDEO_ROI_RECT_DELTA_QP (V4L2_CID_CODEC_BASE + 661) +#define V4L2_CID_MPEG_VIDEO_ROI_RECT_PRIORITY (V4L2_CID_CODEC_BASE + 662) +#define V4L2_CID_MPEG_VIDEO_ROI_MAP_DELTA_QP (V4L2_CID_CODEC_BASE + 663) +#define V4L2_CID_MPEG_VIDEO_ROI_MAP_ABSOLUTE_QP (V4L2_CID_CODEC_BASE + 664) + /* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */ #define V4L2_CID_CODEC_CX2341X_BASE (V4L2_CTRL_CLASS_CODEC | 0x1000) #define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_CODEC_CX2341X_BASE+0)