/* SPDX-License-Identifier: GPL-2.0 */
/*
 * These are the H.264 state controls for use with stateless H.264
 * codec drivers.
 *
 * These headers are legacy H264 headers and specific to Chromium only.
 * Chromium needs to support pre v4.19 headers but will be removed in the
 * future when Chromium will support only v4.19 and onward.
 */

#ifndef _H264_CTRLS_LEGACY_H_
#define _H264_CTRLS_LEGACY_H_

#include <linux/videodev2.h>

#define V4L2_CID_MPEG_VIDEO_H264_SPS            (V4L2_CID_MPEG_BASE+383)
#define V4L2_CID_MPEG_VIDEO_H264_PPS            (V4L2_CID_MPEG_BASE+384)
#define V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (V4L2_CID_MPEG_BASE+385)
#define V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAM    (V4L2_CID_MPEG_BASE+386)
#define V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAM   (V4L2_CID_MPEG_BASE+387)

#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;
	__s32 offset_for_non_ref_pic;
	__s32 offset_for_top_to_bottom_field;
	__u8 num_ref_frames_in_pic_order_cnt_cycle;
	__s32 offset_for_ref_frame[255];
	__u8 max_num_ref_frames;
	__u16 pic_width_in_mbs_minus1;
	__u16 pic_height_in_map_units_minus1;
	__u8 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_PIC_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;
	__u8 flags;
};

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

struct v4l2_h264_weight_factors {
	__s8 luma_weight[32];
	__s8 luma_offset[32];
	__s8 chroma_weight[32][2];
	__s8 chroma_offset[32][2];
};

struct v4l2_h264_pred_weight_table {
	__u8 luma_log2_weight_denom;
	__u8 chroma_log2_weight_denom;
	struct v4l2_h264_weight_factors weight_factors[2];
};

#define V4L2_SLICE_FLAG_FIELD_PIC		0x01
#define V4L2_SLICE_FLAG_BOTTOM_FIELD		0x02
#define V4L2_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED	0x04
#define V4L2_SLICE_FLAG_SP_FOR_SWITCH		0x08
struct v4l2_ctrl_h264_slice_param {
	/* Size in bytes, including header */
	__u32 size;
	/* Offset in bits to slice_data() from the beginning of this slice. */
	__u32 header_bit_size;

	__u16 first_mb_in_slice;
	__u8 slice_type;
	__u8 pic_parameter_set_id;
	__u8 colour_plane_id;
	__u16 frame_num;
	__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;
	__u8 redundant_pic_cnt;

	struct v4l2_h264_pred_weight_table pred_weight_table;
	/* 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;

	__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;
	__u32 slice_group_change_cycle;

	__u8 num_ref_idx_l0_active_minus1;
	__u8 num_ref_idx_l1_active_minus1;
	/*  Entries on each list are indices
	 *  into v4l2_ctrl_h264_decode_param.dpb[]. */
	__u8 ref_pic_list0[32];
	__u8 ref_pic_list1[32];

	__u8 flags;
};

/* If not set, this entry is unused for reference. */
#define V4L2_H264_DPB_ENTRY_FLAG_ACTIVE	0x01
#define V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM	0x02
struct v4l2_h264_dpb_entry {
	__u32 buf_index; /* v4l2_buffer index */
	__u16 frame_num;
	__u16 pic_num;
	/* Note that field is indicated by v4l2_buffer.field */
	__s32 top_field_order_cnt;
	__s32 bottom_field_order_cnt;
	__u8 flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
};

struct v4l2_ctrl_h264_decode_param {
	__u32 num_slices;
	__u8 idr_pic_flag;
	__u8 nal_ref_idc;
	__s32 top_field_order_cnt;
	__s32 bottom_field_order_cnt;
	__u8 ref_pic_list_p0[32];
	__u8 ref_pic_list_b0[32];
	__u8 ref_pic_list_b1[32];
	struct v4l2_h264_dpb_entry dpb[16];
};

#endif /* __LINUX_MEDIA_H264_CTRLS_LEGACY_H_ */