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/* 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_ctrl_type type values */
#define V4L2_CTRL_TYPE_H264_SPS 0x0110
#define V4L2_CTRL_TYPE_H264_PPS 0x0111
#define V4L2_CTRL_TYPE_H264_SCALING_MATRIX 0x0112
#define V4L2_CTRL_TYPE_H264_SLICE_PARAMS 0x0113
#define V4L2_CTRL_TYPE_H264_DECODE_PARAMS 0x0114
#define V4L2_CTRL_TYPE_H264_PRED_WEIGHTS 0x0115
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
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