include/media/h264-ctrls.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * These are the H.264 state controls for use with stateless H.264
  * codec drivers.
  *
  * It turns out that these structs are not stable yet and will undergo
  * more changes. So keep them private until they are stable and ready to
  * become part of the official public API.
  */

 #ifndef _H264_CTRLS_H_
 #define _H264_CTRLS_H_

 #include <linux/videodev2.h>

 /*
  * Maximum DPB size, as specified by section 'A.3.1 Level limits
  * common to the Baseline, Main, and Extended profiles'.
  */
 #define V4L2_H264_NUM_DPB_ENTRIES 16

 #define V4L2_H264_REF_LIST_LEN (2 * V4L2_H264_NUM_DPB_ENTRIES)

 /* Our pixel format isn't stable at the moment */
 #define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */

 /*
  * This is put insanely high to avoid conflicting with controls that
  * would be added during the phase where those controls are not
  * stable. It should be fixed eventually.
  */
 #define V4L2_CID_MPEG_VIDEO_H264_SPS		(V4L2_CID_MPEG_BASE+1000)
 #define V4L2_CID_MPEG_VIDEO_H264_PPS		(V4L2_CID_MPEG_BASE+1001)
 #define V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX	(V4L2_CID_MPEG_BASE+1002)
 #define V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS	(V4L2_CID_MPEG_BASE+1003)
 #define V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS	(V4L2_CID_MPEG_BASE+1004)
 #define V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE	(V4L2_CID_MPEG_BASE+1005)
 #define V4L2_CID_MPEG_VIDEO_H264_START_CODE	(V4L2_CID_MPEG_BASE+1006)
 #define V4L2_CID_MPEG_VIDEO_H264_PRED_WEIGHTS	(V4L2_CID_MPEG_BASE+1007)

 enum v4l2_mpeg_video_h264_decode_mode {
 	V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED,
 	V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED,
 };

 enum v4l2_mpeg_video_h264_start_code {
 	V4L2_MPEG_VIDEO_H264_START_CODE_NONE,
 	V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B,
 };

 #define V4L2_H264_SPS_CONSTRAINT_SET0_FLAG			0x01
 #define V4L2_H264_SPS_CONSTRAINT_SET1_FLAG			0x02
 #define V4L2_H264_SPS_CONSTRAINT_SET2_FLAG			0x04
 #define V4L2_H264_SPS_CONSTRAINT_SET3_FLAG			0x08
 #define V4L2_H264_SPS_CONSTRAINT_SET4_FLAG			0x10
 #define V4L2_H264_SPS_CONSTRAINT_SET5_FLAG			0x20

 #define V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE		0x01
 #define V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS	0x02
 #define V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO		0x04
 #define V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED	0x08
 #define V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY			0x10
 #define V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD		0x20
 #define V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE			0x40

 struct v4l2_ctrl_h264_sps {
 	__u8 profile_idc;
 	__u8 constraint_set_flags;
 	__u8 level_idc;
 	__u8 seq_parameter_set_id;
 	__u8 chroma_format_idc;
 	__u8 bit_depth_luma_minus8;
 	__u8 bit_depth_chroma_minus8;
 	__u8 log2_max_frame_num_minus4;
 	__u8 pic_order_cnt_type;
 	__u8 log2_max_pic_order_cnt_lsb_minus4;
 	__u8 max_num_ref_frames;
 	__u8 num_ref_frames_in_pic_order_cnt_cycle;
 	__s32 offset_for_ref_frame[255];
 	__s32 offset_for_non_ref_pic;
 	__s32 offset_for_top_to_bottom_field;
 	__u16 pic_width_in_mbs_minus1;
 	__u16 pic_height_in_map_units_minus1;
 	__u32 flags;
 };

 #define V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE				0x0001
 #define V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT	0x0002
 #define V4L2_H264_PPS_FLAG_WEIGHTED_PRED				0x0004
 #define V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT		0x0008
 #define V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED			0x0010
 #define V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT			0x0020
 #define V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE				0x0040
 #define V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT			0x0080

 struct v4l2_ctrl_h264_pps {
 	__u8 pic_parameter_set_id;
 	__u8 seq_parameter_set_id;
 	__u8 num_slice_groups_minus1;
 	__u8 num_ref_idx_l0_default_active_minus1;
 	__u8 num_ref_idx_l1_default_active_minus1;
 	__u8 weighted_bipred_idc;
 	__s8 pic_init_qp_minus26;
 	__s8 pic_init_qs_minus26;
 	__s8 chroma_qp_index_offset;
 	__s8 second_chroma_qp_index_offset;
 	__u16 flags;
 };

 struct v4l2_ctrl_h264_scaling_matrix {
 	__u8 scaling_list_4x4[6][16];
 	__u8 scaling_list_8x8[6][64];
 };

 struct v4l2_h264_weight_factors {
 	__s16 luma_weight[32];
 	__s16 luma_offset[32];
 	__s16 chroma_weight[32][2];
 	__s16 chroma_offset[32][2];
 };

 #define V4L2_H264_CTRL_PRED_WEIGHTS_REQUIRED(pps, slice) \
 	((((pps)->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) && \
 	 ((slice)->slice_type == V4L2_H264_SLICE_TYPE_P || \
 	  (slice)->slice_type == V4L2_H264_SLICE_TYPE_SP)) || \
 	 ((pps)->weighted_bipred_idc == 1 && \
 	  (slice)->slice_type == V4L2_H264_SLICE_TYPE_B))

 struct v4l2_ctrl_h264_pred_weights {
 	__u16 luma_log2_weight_denom;
 	__u16 chroma_log2_weight_denom;
 	struct v4l2_h264_weight_factors weight_factors[2];
 };

 #define V4L2_H264_SLICE_TYPE_P				0
 #define V4L2_H264_SLICE_TYPE_B				1
 #define V4L2_H264_SLICE_TYPE_I				2
 #define V4L2_H264_SLICE_TYPE_SP				3
 #define V4L2_H264_SLICE_TYPE_SI				4

 #define V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED	0x01
 #define V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH		0x02

 #define V4L2_H264_TOP_FIELD_REF				0x1
 #define V4L2_H264_BOTTOM_FIELD_REF			0x2
 #define V4L2_H264_FRAME_REF				0x3

 struct v4l2_h264_reference {
 	__u8 fields;

 	/* Index into v4l2_ctrl_h264_decode_params.dpb[] */
 	__u8 index;
 };

 struct v4l2_ctrl_h264_slice_params {
 	/* Offset in bits to slice_data() from the beginning of this slice. */
 	__u32 header_bit_size;

 	__u32 first_mb_in_slice;

 	__u8 slice_type;
 	__u8 colour_plane_id;
 	__u8 redundant_pic_cnt;
 	__u8 cabac_init_idc;
 	__s8 slice_qp_delta;
 	__s8 slice_qs_delta;
 	__u8 disable_deblocking_filter_idc;
 	__s8 slice_alpha_c0_offset_div2;
 	__s8 slice_beta_offset_div2;
 	__u8 num_ref_idx_l0_active_minus1;
 	__u8 num_ref_idx_l1_active_minus1;

 	__u8 reserved;

 	struct v4l2_h264_reference ref_pic_list0[V4L2_H264_REF_LIST_LEN];
 	struct v4l2_h264_reference ref_pic_list1[V4L2_H264_REF_LIST_LEN];

 	__u32 flags;
 };

 #define V4L2_H264_DPB_ENTRY_FLAG_VALID		0x01
 #define V4L2_H264_DPB_ENTRY_FLAG_ACTIVE		0x02
 #define V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM	0x04
 #define V4L2_H264_DPB_ENTRY_FLAG_FIELD		0x08

 struct v4l2_h264_dpb_entry {
 	__u64 reference_ts;
 	__u32 pic_num;
 	__u16 frame_num;
 	__u8 fields;
 	__u8 reserved[5];
 	/* Note that field is indicated by v4l2_buffer.field */
 	__s32 top_field_order_cnt;
 	__s32 bottom_field_order_cnt;
 	__u32 flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
 };

 #define V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC		0x01
 #define V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC		0x02
 #define V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD	0x04

 struct v4l2_ctrl_h264_decode_params {
 	struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES];
 	__u16 nal_ref_idc;
 	__u16 frame_num;
 	__s32 top_field_order_cnt;
 	__s32 bottom_field_order_cnt;
 	__u16 idr_pic_id;
 	__u16 pic_order_cnt_lsb;
 	__s32 delta_pic_order_cnt_bottom;
 	__s32 delta_pic_order_cnt0;
 	__s32 delta_pic_order_cnt1;
 	/* Size in bits of dec_ref_pic_marking() syntax element. */
 	__u32 dec_ref_pic_marking_bit_size;
 	/* Size in bits of pic order count syntax. */
 	__u32 pic_order_cnt_bit_size;
 	__u32 slice_group_change_cycle;

 	__u32 reserved;
 	__u32 flags; /* V4L2_H264_DECODE_PARAM_FLAG_* */
 };

 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* These are the H.264 state controls for use with stateless H.264
	* codec drivers.
	*
	* It turns out that these structs are not stable yet and will undergo
	* more changes. So keep them private until they are stable and ready to
	* become part of the official public API.
	*/

	#ifndef _H264_CTRLS_H_
	#define _H264_CTRLS_H_

	#include <linux/videodev2.h>

	/*
	* Maximum DPB size, as specified by section 'A.3.1 Level limits
	* common to the Baseline, Main, and Extended profiles'.
	*/
	#define V4L2_H264_NUM_DPB_ENTRIES 16

	#define V4L2_H264_REF_LIST_LEN (2 * V4L2_H264_NUM_DPB_ENTRIES)

	/* Our pixel format isn't stable at the moment */
	#define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */

	/*
	* This is put insanely high to avoid conflicting with controls that
	* would be added during the phase where those controls are not
	* stable. It should be fixed eventually.
	*/
	#define V4L2_CID_MPEG_VIDEO_H264_SPS (V4L2_CID_MPEG_BASE+1000)
	#define V4L2_CID_MPEG_VIDEO_H264_PPS (V4L2_CID_MPEG_BASE+1001)
	#define V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (V4L2_CID_MPEG_BASE+1002)
	#define V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (V4L2_CID_MPEG_BASE+1003)
	#define V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS (V4L2_CID_MPEG_BASE+1004)
	#define V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE (V4L2_CID_MPEG_BASE+1005)
	#define V4L2_CID_MPEG_VIDEO_H264_START_CODE (V4L2_CID_MPEG_BASE+1006)
	#define V4L2_CID_MPEG_VIDEO_H264_PRED_WEIGHTS (V4L2_CID_MPEG_BASE+1007)

	enum v4l2_mpeg_video_h264_decode_mode {
	V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED,
	V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED,
	};

	enum v4l2_mpeg_video_h264_start_code {
	V4L2_MPEG_VIDEO_H264_START_CODE_NONE,
	V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B,
	};

	#define V4L2_H264_SPS_CONSTRAINT_SET0_FLAG 0x01
	#define V4L2_H264_SPS_CONSTRAINT_SET1_FLAG 0x02
	#define V4L2_H264_SPS_CONSTRAINT_SET2_FLAG 0x04
	#define V4L2_H264_SPS_CONSTRAINT_SET3_FLAG 0x08
	#define V4L2_H264_SPS_CONSTRAINT_SET4_FLAG 0x10
	#define V4L2_H264_SPS_CONSTRAINT_SET5_FLAG 0x20

	#define V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE 0x01
	#define V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS 0x02
	#define V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO 0x04
	#define V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED 0x08
	#define V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY 0x10
	#define V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD 0x20
	#define V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE 0x40

	struct v4l2_ctrl_h264_sps {
	__u8 profile_idc;
	__u8 constraint_set_flags;
	__u8 level_idc;
	__u8 seq_parameter_set_id;
	__u8 chroma_format_idc;
	__u8 bit_depth_luma_minus8;
	__u8 bit_depth_chroma_minus8;
	__u8 log2_max_frame_num_minus4;
	__u8 pic_order_cnt_type;
	__u8 log2_max_pic_order_cnt_lsb_minus4;
	__u8 max_num_ref_frames;
	__u8 num_ref_frames_in_pic_order_cnt_cycle;
	__s32 offset_for_ref_frame[255];
	__s32 offset_for_non_ref_pic;
	__s32 offset_for_top_to_bottom_field;
	__u16 pic_width_in_mbs_minus1;
	__u16 pic_height_in_map_units_minus1;
	__u32 flags;
	};

	#define V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE 0x0001
	#define V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT 0x0002
	#define V4L2_H264_PPS_FLAG_WEIGHTED_PRED 0x0004
	#define V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT 0x0008
	#define V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED 0x0010
	#define V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT 0x0020
	#define V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE 0x0040
	#define V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT 0x0080

	struct v4l2_ctrl_h264_pps {
	__u8 pic_parameter_set_id;
	__u8 seq_parameter_set_id;
	__u8 num_slice_groups_minus1;
	__u8 num_ref_idx_l0_default_active_minus1;
	__u8 num_ref_idx_l1_default_active_minus1;
	__u8 weighted_bipred_idc;
	__s8 pic_init_qp_minus26;
	__s8 pic_init_qs_minus26;
	__s8 chroma_qp_index_offset;
	__s8 second_chroma_qp_index_offset;
	__u16 flags;
	};

	struct v4l2_ctrl_h264_scaling_matrix {
	__u8 scaling_list_4x4[6][16];
	__u8 scaling_list_8x8[6][64];
	};

	struct v4l2_h264_weight_factors {
	__s16 luma_weight[32];
	__s16 luma_offset[32];
	__s16 chroma_weight[32][2];
	__s16 chroma_offset[32][2];
	};

	#define V4L2_H264_CTRL_PRED_WEIGHTS_REQUIRED(pps, slice) \
	((((pps)->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) && \
	((slice)->slice_type == V4L2_H264_SLICE_TYPE_P \|\| \
	(slice)->slice_type == V4L2_H264_SLICE_TYPE_SP)) \|\| \
	((pps)->weighted_bipred_idc == 1 && \
	(slice)->slice_type == V4L2_H264_SLICE_TYPE_B))

	struct v4l2_ctrl_h264_pred_weights {
	__u16 luma_log2_weight_denom;
	__u16 chroma_log2_weight_denom;
	struct v4l2_h264_weight_factors weight_factors[2];
	};

	#define V4L2_H264_SLICE_TYPE_P 0
	#define V4L2_H264_SLICE_TYPE_B 1
	#define V4L2_H264_SLICE_TYPE_I 2
	#define V4L2_H264_SLICE_TYPE_SP 3
	#define V4L2_H264_SLICE_TYPE_SI 4

	#define V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED 0x01
	#define V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH 0x02

	#define V4L2_H264_TOP_FIELD_REF 0x1
	#define V4L2_H264_BOTTOM_FIELD_REF 0x2
	#define V4L2_H264_FRAME_REF 0x3

	struct v4l2_h264_reference {
	__u8 fields;

	/* Index into v4l2_ctrl_h264_decode_params.dpb[] */
	__u8 index;
	};

	struct v4l2_ctrl_h264_slice_params {
	/* Offset in bits to slice_data() from the beginning of this slice. */
	__u32 header_bit_size;

	__u32 first_mb_in_slice;

	__u8 slice_type;
	__u8 colour_plane_id;
	__u8 redundant_pic_cnt;
	__u8 cabac_init_idc;
	__s8 slice_qp_delta;
	__s8 slice_qs_delta;
	__u8 disable_deblocking_filter_idc;
	__s8 slice_alpha_c0_offset_div2;
	__s8 slice_beta_offset_div2;
	__u8 num_ref_idx_l0_active_minus1;
	__u8 num_ref_idx_l1_active_minus1;

	__u8 reserved;

	struct v4l2_h264_reference ref_pic_list0[V4L2_H264_REF_LIST_LEN];
	struct v4l2_h264_reference ref_pic_list1[V4L2_H264_REF_LIST_LEN];

	__u32 flags;
	};

	#define V4L2_H264_DPB_ENTRY_FLAG_VALID 0x01
	#define V4L2_H264_DPB_ENTRY_FLAG_ACTIVE 0x02
	#define V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM 0x04
	#define V4L2_H264_DPB_ENTRY_FLAG_FIELD 0x08

	struct v4l2_h264_dpb_entry {
	__u64 reference_ts;
	__u32 pic_num;
	__u16 frame_num;
	__u8 fields;
	__u8 reserved[5];
	/* Note that field is indicated by v4l2_buffer.field */
	__s32 top_field_order_cnt;
	__s32 bottom_field_order_cnt;
	__u32 flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
	};

	#define V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC 0x01
	#define V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC 0x02
	#define V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD 0x04

	struct v4l2_ctrl_h264_decode_params {
	struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES];
	__u16 nal_ref_idc;
	__u16 frame_num;
	__s32 top_field_order_cnt;
	__s32 bottom_field_order_cnt;
	__u16 idr_pic_id;
	__u16 pic_order_cnt_lsb;
	__s32 delta_pic_order_cnt_bottom;
	__s32 delta_pic_order_cnt0;
	__s32 delta_pic_order_cnt1;
	/* Size in bits of dec_ref_pic_marking() syntax element. */
	__u32 dec_ref_pic_marking_bit_size;
	/* Size in bits of pic order count syntax. */
	__u32 pic_order_cnt_bit_size;
	__u32 slice_group_change_cycle;

	__u32 reserved;
	__u32 flags; /* V4L2_H264_DECODE_PARAM_FLAG_* */
	};

	#endif