| /* |
| * HEVC parameter set parsing |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVCODEC_HEVC_PS_H |
| #define AVCODEC_HEVC_PS_H |
| |
| #include <stdint.h> |
| |
| #include "libavutil/buffer.h" |
| #include "libavutil/pixfmt.h" |
| #include "libavutil/rational.h" |
| |
| #include "avcodec.h" |
| #include "get_bits.h" |
| #include "hevc.h" |
| |
| typedef struct ShortTermRPS { |
| unsigned int num_negative_pics; |
| int num_delta_pocs; |
| int rps_idx_num_delta_pocs; |
| int32_t delta_poc[32]; |
| uint8_t used[32]; |
| } ShortTermRPS; |
| |
| typedef struct HEVCWindow { |
| unsigned int left_offset; |
| unsigned int right_offset; |
| unsigned int top_offset; |
| unsigned int bottom_offset; |
| } HEVCWindow; |
| |
| typedef struct VUI { |
| AVRational sar; |
| |
| int overscan_info_present_flag; |
| int overscan_appropriate_flag; |
| |
| int video_signal_type_present_flag; |
| int video_format; |
| int video_full_range_flag; |
| int colour_description_present_flag; |
| uint8_t colour_primaries; |
| uint8_t transfer_characteristic; |
| uint8_t matrix_coeffs; |
| |
| int chroma_loc_info_present_flag; |
| int chroma_sample_loc_type_top_field; |
| int chroma_sample_loc_type_bottom_field; |
| int neutra_chroma_indication_flag; |
| |
| int field_seq_flag; |
| int frame_field_info_present_flag; |
| |
| int default_display_window_flag; |
| HEVCWindow def_disp_win; |
| |
| int vui_timing_info_present_flag; |
| uint32_t vui_num_units_in_tick; |
| uint32_t vui_time_scale; |
| int vui_poc_proportional_to_timing_flag; |
| int vui_num_ticks_poc_diff_one_minus1; |
| int vui_hrd_parameters_present_flag; |
| |
| int bitstream_restriction_flag; |
| int tiles_fixed_structure_flag; |
| int motion_vectors_over_pic_boundaries_flag; |
| int restricted_ref_pic_lists_flag; |
| int min_spatial_segmentation_idc; |
| int max_bytes_per_pic_denom; |
| int max_bits_per_min_cu_denom; |
| int log2_max_mv_length_horizontal; |
| int log2_max_mv_length_vertical; |
| } VUI; |
| |
| typedef struct PTLCommon { |
| uint8_t profile_space; |
| uint8_t tier_flag; |
| uint8_t profile_idc; |
| uint8_t profile_compatibility_flag[32]; |
| uint8_t progressive_source_flag; |
| uint8_t interlaced_source_flag; |
| uint8_t non_packed_constraint_flag; |
| uint8_t frame_only_constraint_flag; |
| uint8_t max_12bit_constraint_flag; |
| uint8_t max_10bit_constraint_flag; |
| uint8_t max_8bit_constraint_flag; |
| uint8_t max_422chroma_constraint_flag; |
| uint8_t max_420chroma_constraint_flag; |
| uint8_t max_monochrome_constraint_flag; |
| uint8_t intra_constraint_flag; |
| uint8_t one_picture_only_constraint_flag; |
| uint8_t lower_bit_rate_constraint_flag; |
| uint8_t max_14bit_constraint_flag; |
| uint8_t inbld_flag; |
| uint8_t level_idc; |
| } PTLCommon; |
| |
| typedef struct PTL { |
| PTLCommon general_ptl; |
| PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS]; |
| |
| uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS]; |
| uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS]; |
| } PTL; |
| |
| typedef struct HEVCVPS { |
| uint8_t vps_temporal_id_nesting_flag; |
| int vps_max_layers; |
| int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1 |
| |
| PTL ptl; |
| int vps_sub_layer_ordering_info_present_flag; |
| unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS]; |
| unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS]; |
| unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS]; |
| int vps_max_layer_id; |
| int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1 |
| uint8_t vps_timing_info_present_flag; |
| uint32_t vps_num_units_in_tick; |
| uint32_t vps_time_scale; |
| uint8_t vps_poc_proportional_to_timing_flag; |
| int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1 |
| int vps_num_hrd_parameters; |
| |
| uint8_t data[4096]; |
| int data_size; |
| } HEVCVPS; |
| |
| typedef struct ScalingList { |
| /* This is a little wasteful, since sizeID 0 only needs 8 coeffs, |
| * and size ID 3 only has 2 arrays, not 6. */ |
| uint8_t sl[4][6][64]; |
| uint8_t sl_dc[2][6]; |
| } ScalingList; |
| |
| typedef struct HEVCSPS { |
| unsigned vps_id; |
| int chroma_format_idc; |
| uint8_t separate_colour_plane_flag; |
| |
| HEVCWindow output_window; |
| |
| HEVCWindow pic_conf_win; |
| |
| int bit_depth; |
| int bit_depth_chroma; |
| int pixel_shift; |
| enum AVPixelFormat pix_fmt; |
| |
| unsigned int log2_max_poc_lsb; |
| int pcm_enabled_flag; |
| |
| int max_sub_layers; |
| struct { |
| int max_dec_pic_buffering; |
| int num_reorder_pics; |
| int max_latency_increase; |
| } temporal_layer[HEVC_MAX_SUB_LAYERS]; |
| uint8_t temporal_id_nesting_flag; |
| |
| VUI vui; |
| PTL ptl; |
| |
| uint8_t scaling_list_enable_flag; |
| ScalingList scaling_list; |
| |
| unsigned int nb_st_rps; |
| ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_REF_PIC_SETS]; |
| |
| uint8_t amp_enabled_flag; |
| uint8_t sao_enabled; |
| |
| uint8_t long_term_ref_pics_present_flag; |
| uint16_t lt_ref_pic_poc_lsb_sps[HEVC_MAX_LONG_TERM_REF_PICS]; |
| uint8_t used_by_curr_pic_lt_sps_flag[HEVC_MAX_LONG_TERM_REF_PICS]; |
| uint8_t num_long_term_ref_pics_sps; |
| |
| struct { |
| uint8_t bit_depth; |
| uint8_t bit_depth_chroma; |
| unsigned int log2_min_pcm_cb_size; |
| unsigned int log2_max_pcm_cb_size; |
| uint8_t loop_filter_disable_flag; |
| } pcm; |
| uint8_t sps_temporal_mvp_enabled_flag; |
| uint8_t sps_strong_intra_smoothing_enable_flag; |
| |
| unsigned int log2_min_cb_size; |
| unsigned int log2_diff_max_min_coding_block_size; |
| unsigned int log2_min_tb_size; |
| unsigned int log2_max_trafo_size; |
| unsigned int log2_ctb_size; |
| unsigned int log2_min_pu_size; |
| |
| int max_transform_hierarchy_depth_inter; |
| int max_transform_hierarchy_depth_intra; |
| |
| int sps_range_extension_flag; |
| int transform_skip_rotation_enabled_flag; |
| int transform_skip_context_enabled_flag; |
| int implicit_rdpcm_enabled_flag; |
| int explicit_rdpcm_enabled_flag; |
| int extended_precision_processing_flag; |
| int intra_smoothing_disabled_flag; |
| int high_precision_offsets_enabled_flag; |
| int persistent_rice_adaptation_enabled_flag; |
| int cabac_bypass_alignment_enabled_flag; |
| |
| ///< coded frame dimension in various units |
| int width; |
| int height; |
| int ctb_width; |
| int ctb_height; |
| int ctb_size; |
| int min_cb_width; |
| int min_cb_height; |
| int min_tb_width; |
| int min_tb_height; |
| int min_pu_width; |
| int min_pu_height; |
| int tb_mask; |
| |
| int hshift[3]; |
| int vshift[3]; |
| |
| int qp_bd_offset; |
| |
| uint8_t data[4096]; |
| int data_size; |
| } HEVCSPS; |
| |
| typedef struct HEVCPPS { |
| unsigned int sps_id; ///< seq_parameter_set_id |
| |
| uint8_t sign_data_hiding_flag; |
| |
| uint8_t cabac_init_present_flag; |
| |
| int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1 |
| int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1 |
| int pic_init_qp_minus26; |
| |
| uint8_t constrained_intra_pred_flag; |
| uint8_t transform_skip_enabled_flag; |
| |
| uint8_t cu_qp_delta_enabled_flag; |
| int diff_cu_qp_delta_depth; |
| |
| int cb_qp_offset; |
| int cr_qp_offset; |
| uint8_t pic_slice_level_chroma_qp_offsets_present_flag; |
| uint8_t weighted_pred_flag; |
| uint8_t weighted_bipred_flag; |
| uint8_t output_flag_present_flag; |
| uint8_t transquant_bypass_enable_flag; |
| |
| uint8_t dependent_slice_segments_enabled_flag; |
| uint8_t tiles_enabled_flag; |
| uint8_t entropy_coding_sync_enabled_flag; |
| |
| uint16_t num_tile_columns; ///< num_tile_columns_minus1 + 1 |
| uint16_t num_tile_rows; ///< num_tile_rows_minus1 + 1 |
| uint8_t uniform_spacing_flag; |
| uint8_t loop_filter_across_tiles_enabled_flag; |
| |
| uint8_t seq_loop_filter_across_slices_enabled_flag; |
| |
| uint8_t deblocking_filter_control_present_flag; |
| uint8_t deblocking_filter_override_enabled_flag; |
| uint8_t disable_dbf; |
| int beta_offset; ///< beta_offset_div2 * 2 |
| int tc_offset; ///< tc_offset_div2 * 2 |
| |
| uint8_t scaling_list_data_present_flag; |
| ScalingList scaling_list; |
| |
| uint8_t lists_modification_present_flag; |
| int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2 |
| int num_extra_slice_header_bits; |
| uint8_t slice_header_extension_present_flag; |
| uint8_t log2_max_transform_skip_block_size; |
| uint8_t pps_range_extensions_flag; |
| uint8_t cross_component_prediction_enabled_flag; |
| uint8_t chroma_qp_offset_list_enabled_flag; |
| uint8_t diff_cu_chroma_qp_offset_depth; |
| uint8_t chroma_qp_offset_list_len_minus1; |
| int8_t cb_qp_offset_list[6]; |
| int8_t cr_qp_offset_list[6]; |
| uint8_t log2_sao_offset_scale_luma; |
| uint8_t log2_sao_offset_scale_chroma; |
| |
| // Inferred parameters |
| unsigned int *column_width; ///< ColumnWidth |
| unsigned int *row_height; ///< RowHeight |
| unsigned int *col_bd; ///< ColBd |
| unsigned int *row_bd; ///< RowBd |
| int *col_idxX; |
| |
| int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS |
| int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS |
| int *tile_id; ///< TileId |
| int *tile_pos_rs; ///< TilePosRS |
| int *min_tb_addr_zs; ///< MinTbAddrZS |
| int *min_tb_addr_zs_tab;///< MinTbAddrZS |
| |
| uint8_t data[4096]; |
| int data_size; |
| } HEVCPPS; |
| |
| typedef struct HEVCParamSets { |
| AVBufferRef *vps_list[HEVC_MAX_VPS_COUNT]; |
| AVBufferRef *sps_list[HEVC_MAX_SPS_COUNT]; |
| AVBufferRef *pps_list[HEVC_MAX_PPS_COUNT]; |
| |
| /* currently active parameter sets */ |
| const HEVCVPS *vps; |
| const HEVCSPS *sps; |
| const HEVCPPS *pps; |
| } HEVCParamSets; |
| |
| /** |
| * Parse the SPS from the bitstream into the provided HEVCSPS struct. |
| * |
| * @param sps_id the SPS id will be written here |
| * @param apply_defdispwin if set 1, the default display window from the VUI |
| * will be applied to the video dimensions |
| * @param vps_list if non-NULL, this function will validate that the SPS refers |
| * to an existing VPS |
| */ |
| int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id, |
| int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx); |
| |
| int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx, |
| HEVCParamSets *ps); |
| int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx, |
| HEVCParamSets *ps, int apply_defdispwin); |
| int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx, |
| HEVCParamSets *ps); |
| |
| void ff_hevc_ps_uninit(HEVCParamSets *ps); |
| |
| int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx, |
| ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header); |
| |
| int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id, |
| uint8_t *buf, int buf_size); |
| |
| /** |
| * Compute POC of the current frame and return it. |
| */ |
| int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type); |
| |
| #endif /* AVCODEC_HEVC_PS_H */ |
