1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * These are the H.264 state controls for use with stateless H.264 4 * codec drivers. 5 * 6 * It turns out that these structs are not stable yet and will undergo 7 * more changes. So keep them private until they are stable and ready to 8 * become part of the official public API. 9 */ 10 11 #ifndef _H264_CTRLS_H_ 12 #define _H264_CTRLS_H_ 13 14 #include <linux/videodev2.h> 15 16 /* 17 * Maximum DPB size, as specified by section 'A.3.1 Level limits 18 * common to the Baseline, Main, and Extended profiles'. 19 */ 20 #define V4L2_H264_NUM_DPB_ENTRIES 16 21 22 #define V4L2_H264_REF_LIST_LEN (2 * V4L2_H264_NUM_DPB_ENTRIES) 23 24 /* Our pixel format isn't stable at the moment */ 25 #define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */ 26 27 /* 28 * This is put insanely high to avoid conflicting with controls that 29 * would be added during the phase where those controls are not 30 * stable. It should be fixed eventually. 31 */ 32 #define V4L2_CID_MPEG_VIDEO_H264_SPS (V4L2_CID_MPEG_BASE+1000) 33 #define V4L2_CID_MPEG_VIDEO_H264_PPS (V4L2_CID_MPEG_BASE+1001) 34 #define V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (V4L2_CID_MPEG_BASE+1002) 35 #define V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (V4L2_CID_MPEG_BASE+1003) 36 #define V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS (V4L2_CID_MPEG_BASE+1004) 37 #define V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE (V4L2_CID_MPEG_BASE+1005) 38 #define V4L2_CID_MPEG_VIDEO_H264_START_CODE (V4L2_CID_MPEG_BASE+1006) 39 #define V4L2_CID_MPEG_VIDEO_H264_PRED_WEIGHTS (V4L2_CID_MPEG_BASE+1007) 40 41 /* enum v4l2_ctrl_type type values */ 42 #define V4L2_CTRL_TYPE_H264_SPS 0x0110 43 #define V4L2_CTRL_TYPE_H264_PPS 0x0111 44 #define V4L2_CTRL_TYPE_H264_SCALING_MATRIX 0x0112 45 #define V4L2_CTRL_TYPE_H264_SLICE_PARAMS 0x0113 46 #define V4L2_CTRL_TYPE_H264_DECODE_PARAMS 0x0114 47 #define V4L2_CTRL_TYPE_H264_PRED_WEIGHTS 0x0115 48 49 enum v4l2_mpeg_video_h264_decode_mode { 50 V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED, 51 V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED, 52 }; 53 54 enum v4l2_mpeg_video_h264_start_code { 55 V4L2_MPEG_VIDEO_H264_START_CODE_NONE, 56 V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B, 57 }; 58 59 #define V4L2_H264_SPS_CONSTRAINT_SET0_FLAG 0x01 60 #define V4L2_H264_SPS_CONSTRAINT_SET1_FLAG 0x02 61 #define V4L2_H264_SPS_CONSTRAINT_SET2_FLAG 0x04 62 #define V4L2_H264_SPS_CONSTRAINT_SET3_FLAG 0x08 63 #define V4L2_H264_SPS_CONSTRAINT_SET4_FLAG 0x10 64 #define V4L2_H264_SPS_CONSTRAINT_SET5_FLAG 0x20 65 66 #define V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE 0x01 67 #define V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS 0x02 68 #define V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO 0x04 69 #define V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED 0x08 70 #define V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY 0x10 71 #define V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD 0x20 72 #define V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE 0x40 73 74 struct v4l2_ctrl_h264_sps { 75 __u8 profile_idc; 76 __u8 constraint_set_flags; 77 __u8 level_idc; 78 __u8 seq_parameter_set_id; 79 __u8 chroma_format_idc; 80 __u8 bit_depth_luma_minus8; 81 __u8 bit_depth_chroma_minus8; 82 __u8 log2_max_frame_num_minus4; 83 __u8 pic_order_cnt_type; 84 __u8 log2_max_pic_order_cnt_lsb_minus4; 85 __u8 max_num_ref_frames; 86 __u8 num_ref_frames_in_pic_order_cnt_cycle; 87 __s32 offset_for_ref_frame[255]; 88 __s32 offset_for_non_ref_pic; 89 __s32 offset_for_top_to_bottom_field; 90 __u16 pic_width_in_mbs_minus1; 91 __u16 pic_height_in_map_units_minus1; 92 __u32 flags; 93 }; 94 95 #define V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE 0x0001 96 #define V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT 0x0002 97 #define V4L2_H264_PPS_FLAG_WEIGHTED_PRED 0x0004 98 #define V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT 0x0008 99 #define V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED 0x0010 100 #define V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT 0x0020 101 #define V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE 0x0040 102 #define V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT 0x0080 103 104 struct v4l2_ctrl_h264_pps { 105 __u8 pic_parameter_set_id; 106 __u8 seq_parameter_set_id; 107 __u8 num_slice_groups_minus1; 108 __u8 num_ref_idx_l0_default_active_minus1; 109 __u8 num_ref_idx_l1_default_active_minus1; 110 __u8 weighted_bipred_idc; 111 __s8 pic_init_qp_minus26; 112 __s8 pic_init_qs_minus26; 113 __s8 chroma_qp_index_offset; 114 __s8 second_chroma_qp_index_offset; 115 __u16 flags; 116 }; 117 118 struct v4l2_ctrl_h264_scaling_matrix { 119 __u8 scaling_list_4x4[6][16]; 120 __u8 scaling_list_8x8[6][64]; 121 }; 122 123 struct v4l2_h264_weight_factors { 124 __s16 luma_weight[32]; 125 __s16 luma_offset[32]; 126 __s16 chroma_weight[32][2]; 127 __s16 chroma_offset[32][2]; 128 }; 129 130 #define V4L2_H264_CTRL_PRED_WEIGHTS_REQUIRED(pps, slice) \ 131 ((((pps)->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) && \ 132 ((slice)->slice_type == V4L2_H264_SLICE_TYPE_P || \ 133 (slice)->slice_type == V4L2_H264_SLICE_TYPE_SP)) || \ 134 ((pps)->weighted_bipred_idc == 1 && \ 135 (slice)->slice_type == V4L2_H264_SLICE_TYPE_B)) 136 137 struct v4l2_ctrl_h264_pred_weights { 138 __u16 luma_log2_weight_denom; 139 __u16 chroma_log2_weight_denom; 140 struct v4l2_h264_weight_factors weight_factors[2]; 141 }; 142 143 #define V4L2_H264_SLICE_TYPE_P 0 144 #define V4L2_H264_SLICE_TYPE_B 1 145 #define V4L2_H264_SLICE_TYPE_I 2 146 #define V4L2_H264_SLICE_TYPE_SP 3 147 #define V4L2_H264_SLICE_TYPE_SI 4 148 149 #define V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED 0x01 150 #define V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH 0x02 151 152 #define V4L2_H264_TOP_FIELD_REF 0x1 153 #define V4L2_H264_BOTTOM_FIELD_REF 0x2 154 #define V4L2_H264_FRAME_REF 0x3 155 156 struct v4l2_h264_reference { 157 __u8 fields; 158 159 /* Index into v4l2_ctrl_h264_decode_params.dpb[] */ 160 __u8 index; 161 }; 162 163 struct v4l2_ctrl_h264_slice_params { 164 /* Offset in bits to slice_data() from the beginning of this slice. */ 165 __u32 header_bit_size; 166 167 __u32 first_mb_in_slice; 168 169 __u8 slice_type; 170 __u8 colour_plane_id; 171 __u8 redundant_pic_cnt; 172 __u8 cabac_init_idc; 173 __s8 slice_qp_delta; 174 __s8 slice_qs_delta; 175 __u8 disable_deblocking_filter_idc; 176 __s8 slice_alpha_c0_offset_div2; 177 __s8 slice_beta_offset_div2; 178 __u8 num_ref_idx_l0_active_minus1; 179 __u8 num_ref_idx_l1_active_minus1; 180 181 __u8 reserved; 182 183 struct v4l2_h264_reference ref_pic_list0[V4L2_H264_REF_LIST_LEN]; 184 struct v4l2_h264_reference ref_pic_list1[V4L2_H264_REF_LIST_LEN]; 185 186 __u32 flags; 187 }; 188 189 #define V4L2_H264_DPB_ENTRY_FLAG_VALID 0x01 190 #define V4L2_H264_DPB_ENTRY_FLAG_ACTIVE 0x02 191 #define V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM 0x04 192 #define V4L2_H264_DPB_ENTRY_FLAG_FIELD 0x08 193 194 struct v4l2_h264_dpb_entry { 195 __u64 reference_ts; 196 __u32 pic_num; 197 __u16 frame_num; 198 __u8 fields; 199 __u8 reserved[5]; 200 /* Note that field is indicated by v4l2_buffer.field */ 201 __s32 top_field_order_cnt; 202 __s32 bottom_field_order_cnt; 203 __u32 flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */ 204 }; 205 206 #define V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC 0x01 207 #define V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC 0x02 208 #define V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD 0x04 209 210 struct v4l2_ctrl_h264_decode_params { 211 struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES]; 212 __u16 nal_ref_idc; 213 __u16 frame_num; 214 __s32 top_field_order_cnt; 215 __s32 bottom_field_order_cnt; 216 __u16 idr_pic_id; 217 __u16 pic_order_cnt_lsb; 218 __s32 delta_pic_order_cnt_bottom; 219 __s32 delta_pic_order_cnt0; 220 __s32 delta_pic_order_cnt1; 221 /* Size in bits of dec_ref_pic_marking() syntax element. */ 222 __u32 dec_ref_pic_marking_bit_size; 223 /* Size in bits of pic order count syntax. */ 224 __u32 pic_order_cnt_bit_size; 225 __u32 slice_group_change_cycle; 226 227 __u32 reserved; 228 __u32 flags; /* V4L2_H264_DECODE_PARAM_FLAG_* */ 229 }; 230 231 #endif 232
