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458 lines
13 KiB
458 lines
13 KiB
/* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_CBS_H264_H |
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#define AVCODEC_CBS_H264_H |
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#include <stddef.h> |
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#include <stdint.h> |
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#include "cbs.h" |
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#include "cbs_h2645.h" |
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#include "h264.h" |
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enum { |
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// This limit is arbitrary - it is sufficient for one message of each |
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// type plus some repeats, and will therefore easily cover all sane |
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// streams. However, it is possible to make technically-valid streams |
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// for which it will fail (for example, by including a large number of |
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// user-data-unregistered messages). |
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H264_MAX_SEI_PAYLOADS = 64, |
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}; |
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typedef struct H264RawNALUnitHeader { |
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uint8_t forbidden_zero_bit; |
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uint8_t nal_ref_idc; |
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uint8_t nal_unit_type; |
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uint8_t svc_extension_flag; |
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uint8_t avc_3d_extension_flag; |
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} H264RawNALUnitHeader; |
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typedef struct H264RawScalingList { |
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int8_t delta_scale[64]; |
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} H264RawScalingList; |
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typedef struct H264RawHRD { |
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uint8_t cpb_cnt_minus1; |
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uint8_t bit_rate_scale; |
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uint8_t cpb_size_scale; |
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uint32_t bit_rate_value_minus1[H264_MAX_CPB_CNT]; |
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uint32_t cpb_size_value_minus1[H264_MAX_CPB_CNT]; |
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uint8_t cbr_flag[H264_MAX_CPB_CNT]; |
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uint8_t initial_cpb_removal_delay_length_minus1; |
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uint8_t cpb_removal_delay_length_minus1; |
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uint8_t dpb_output_delay_length_minus1; |
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uint8_t time_offset_length; |
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} H264RawHRD; |
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typedef struct H264RawVUI { |
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uint8_t aspect_ratio_info_present_flag; |
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uint8_t aspect_ratio_idc; |
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uint16_t sar_width; |
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uint16_t sar_height; |
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uint8_t overscan_info_present_flag; |
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uint8_t overscan_appropriate_flag; |
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uint8_t video_signal_type_present_flag; |
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uint8_t video_format; |
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uint8_t video_full_range_flag; |
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uint8_t colour_description_present_flag; |
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uint8_t colour_primaries; |
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uint8_t transfer_characteristics; |
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uint8_t matrix_coefficients; |
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uint8_t chroma_loc_info_present_flag; |
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uint8_t chroma_sample_loc_type_top_field; |
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uint8_t chroma_sample_loc_type_bottom_field; |
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uint8_t timing_info_present_flag; |
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uint32_t num_units_in_tick; |
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uint32_t time_scale; |
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uint8_t fixed_frame_rate_flag; |
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uint8_t nal_hrd_parameters_present_flag; |
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H264RawHRD nal_hrd_parameters; |
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uint8_t vcl_hrd_parameters_present_flag; |
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H264RawHRD vcl_hrd_parameters; |
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uint8_t low_delay_hrd_flag; |
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uint8_t pic_struct_present_flag; |
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uint8_t bitstream_restriction_flag; |
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uint8_t motion_vectors_over_pic_boundaries_flag; |
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uint8_t max_bytes_per_pic_denom; |
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uint8_t max_bits_per_mb_denom; |
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uint8_t log2_max_mv_length_horizontal; |
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uint8_t log2_max_mv_length_vertical; |
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uint8_t max_num_reorder_frames; |
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uint8_t max_dec_frame_buffering; |
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} H264RawVUI; |
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typedef struct H264RawSPS { |
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H264RawNALUnitHeader nal_unit_header; |
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uint8_t profile_idc; |
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uint8_t constraint_set0_flag; |
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uint8_t constraint_set1_flag; |
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uint8_t constraint_set2_flag; |
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uint8_t constraint_set3_flag; |
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uint8_t constraint_set4_flag; |
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uint8_t constraint_set5_flag; |
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uint8_t reserved_zero_2bits; |
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uint8_t level_idc; |
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uint8_t seq_parameter_set_id; |
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uint8_t chroma_format_idc; |
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uint8_t separate_colour_plane_flag; |
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uint8_t bit_depth_luma_minus8; |
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uint8_t bit_depth_chroma_minus8; |
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uint8_t qpprime_y_zero_transform_bypass_flag; |
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uint8_t seq_scaling_matrix_present_flag; |
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uint8_t seq_scaling_list_present_flag[12]; |
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H264RawScalingList scaling_list_4x4[6]; |
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H264RawScalingList scaling_list_8x8[6]; |
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uint8_t log2_max_frame_num_minus4; |
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uint8_t pic_order_cnt_type; |
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uint8_t log2_max_pic_order_cnt_lsb_minus4; |
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uint8_t delta_pic_order_always_zero_flag; |
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int32_t offset_for_non_ref_pic; |
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int32_t offset_for_top_to_bottom_field; |
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uint8_t num_ref_frames_in_pic_order_cnt_cycle; |
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int32_t offset_for_ref_frame[256]; |
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uint8_t max_num_ref_frames; |
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uint8_t gaps_in_frame_num_allowed_flag; |
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uint16_t pic_width_in_mbs_minus1; |
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uint16_t pic_height_in_map_units_minus1; |
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uint8_t frame_mbs_only_flag; |
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uint8_t mb_adaptive_frame_field_flag; |
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uint8_t direct_8x8_inference_flag; |
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uint8_t frame_cropping_flag; |
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uint16_t frame_crop_left_offset; |
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uint16_t frame_crop_right_offset; |
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uint16_t frame_crop_top_offset; |
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uint16_t frame_crop_bottom_offset; |
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uint8_t vui_parameters_present_flag; |
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H264RawVUI vui; |
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} H264RawSPS; |
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typedef struct H264RawSPSExtension { |
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H264RawNALUnitHeader nal_unit_header; |
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uint8_t seq_parameter_set_id; |
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uint8_t aux_format_idc; |
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uint8_t bit_depth_aux_minus8; |
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uint8_t alpha_incr_flag; |
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uint16_t alpha_opaque_value; |
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uint16_t alpha_transparent_value; |
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uint8_t additional_extension_flag; |
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} H264RawSPSExtension; |
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typedef struct H264RawPPS { |
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H264RawNALUnitHeader nal_unit_header; |
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uint8_t pic_parameter_set_id; |
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uint8_t seq_parameter_set_id; |
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uint8_t entropy_coding_mode_flag; |
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uint8_t bottom_field_pic_order_in_frame_present_flag; |
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uint8_t num_slice_groups_minus1; |
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uint8_t slice_group_map_type; |
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uint16_t run_length_minus1[H264_MAX_SLICE_GROUPS]; |
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uint16_t top_left[H264_MAX_SLICE_GROUPS]; |
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uint16_t bottom_right[H264_MAX_SLICE_GROUPS]; |
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uint8_t slice_group_change_direction_flag; |
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uint16_t slice_group_change_rate_minus1; |
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uint16_t pic_size_in_map_units_minus1; |
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uint8_t *slice_group_id; |
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AVBufferRef *slice_group_id_ref; |
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uint8_t num_ref_idx_l0_default_active_minus1; |
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uint8_t num_ref_idx_l1_default_active_minus1; |
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uint8_t weighted_pred_flag; |
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uint8_t weighted_bipred_idc; |
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int8_t pic_init_qp_minus26; |
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int8_t pic_init_qs_minus26; |
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int8_t chroma_qp_index_offset; |
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uint8_t deblocking_filter_control_present_flag; |
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uint8_t constrained_intra_pred_flag; |
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uint8_t more_rbsp_data; |
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uint8_t redundant_pic_cnt_present_flag; |
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uint8_t transform_8x8_mode_flag; |
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uint8_t pic_scaling_matrix_present_flag; |
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uint8_t pic_scaling_list_present_flag[12]; |
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H264RawScalingList scaling_list_4x4[6]; |
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H264RawScalingList scaling_list_8x8[6]; |
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int8_t second_chroma_qp_index_offset; |
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} H264RawPPS; |
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typedef struct H264RawAUD { |
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H264RawNALUnitHeader nal_unit_header; |
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uint8_t primary_pic_type; |
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} H264RawAUD; |
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typedef struct H264RawSEIBufferingPeriod { |
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uint8_t seq_parameter_set_id; |
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struct { |
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uint32_t initial_cpb_removal_delay[H264_MAX_CPB_CNT]; |
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uint32_t initial_cpb_removal_delay_offset[H264_MAX_CPB_CNT]; |
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} nal, vcl; |
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} H264RawSEIBufferingPeriod; |
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typedef struct H264RawSEIPicTimestamp { |
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uint8_t ct_type; |
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uint8_t nuit_field_based_flag; |
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uint8_t counting_type; |
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uint8_t full_timestamp_flag; |
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uint8_t discontinuity_flag; |
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uint8_t cnt_dropped_flag; |
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uint8_t n_frames; |
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uint8_t seconds_flag; |
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uint8_t seconds_value; |
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uint8_t minutes_flag; |
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uint8_t minutes_value; |
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uint8_t hours_flag; |
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uint8_t hours_value; |
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uint32_t time_offset; |
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} H264RawSEIPicTimestamp; |
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typedef struct H264RawSEIPicTiming { |
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uint32_t cpb_removal_delay; |
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uint32_t dpb_output_delay; |
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uint8_t pic_struct; |
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uint8_t clock_timestamp_flag[3]; |
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H264RawSEIPicTimestamp timestamp[3]; |
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} H264RawSEIPicTiming; |
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typedef struct H264RawSEIUserDataRegistered { |
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uint8_t itu_t_t35_country_code; |
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uint8_t itu_t_t35_country_code_extension_byte; |
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uint8_t *data; |
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size_t data_length; |
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AVBufferRef *data_ref; |
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} H264RawSEIUserDataRegistered; |
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typedef struct H264RawSEIUserDataUnregistered { |
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uint8_t uuid_iso_iec_11578[16]; |
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uint8_t *data; |
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size_t data_length; |
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AVBufferRef *data_ref; |
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} H264RawSEIUserDataUnregistered; |
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typedef struct H264RawSEIRecoveryPoint { |
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uint16_t recovery_frame_cnt; |
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uint8_t exact_match_flag; |
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uint8_t broken_link_flag; |
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uint8_t changing_slice_group_idc; |
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} H264RawSEIRecoveryPoint; |
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typedef struct H264RawSEIDisplayOrientation { |
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uint8_t display_orientation_cancel_flag; |
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uint8_t hor_flip; |
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uint8_t ver_flip; |
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uint16_t anticlockwise_rotation; |
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uint16_t display_orientation_repetition_period; |
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uint8_t display_orientation_extension_flag; |
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} H264RawSEIDisplayOrientation; |
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typedef struct H264RawSEIPayload { |
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uint32_t payload_type; |
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uint32_t payload_size; |
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union { |
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H264RawSEIBufferingPeriod buffering_period; |
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H264RawSEIPicTiming pic_timing; |
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// H264RawSEIFiller filler -> no fields. |
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H264RawSEIUserDataRegistered user_data_registered; |
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H264RawSEIUserDataUnregistered user_data_unregistered; |
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H264RawSEIRecoveryPoint recovery_point; |
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H264RawSEIDisplayOrientation display_orientation; |
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struct { |
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uint8_t *data; |
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size_t data_length; |
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AVBufferRef *data_ref; |
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} other; |
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} payload; |
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} H264RawSEIPayload; |
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typedef struct H264RawSEI { |
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H264RawNALUnitHeader nal_unit_header; |
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H264RawSEIPayload payload[H264_MAX_SEI_PAYLOADS]; |
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uint8_t payload_count; |
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} H264RawSEI; |
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typedef struct H264RawSliceHeader { |
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H264RawNALUnitHeader nal_unit_header; |
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uint32_t first_mb_in_slice; |
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uint8_t slice_type; |
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uint8_t pic_parameter_set_id; |
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uint8_t colour_plane_id; |
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uint16_t frame_num; |
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uint8_t field_pic_flag; |
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uint8_t bottom_field_flag; |
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uint16_t idr_pic_id; |
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uint16_t pic_order_cnt_lsb; |
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int32_t delta_pic_order_cnt_bottom; |
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int32_t delta_pic_order_cnt[2]; |
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uint8_t redundant_pic_cnt; |
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uint8_t direct_spatial_mv_pred_flag; |
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uint8_t num_ref_idx_active_override_flag; |
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uint8_t num_ref_idx_l0_active_minus1; |
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uint8_t num_ref_idx_l1_active_minus1; |
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uint8_t ref_pic_list_modification_flag_l0; |
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uint8_t ref_pic_list_modification_flag_l1; |
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struct { |
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uint8_t modification_of_pic_nums_idc; |
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int32_t abs_diff_pic_num_minus1; |
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uint8_t long_term_pic_num; |
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} rplm_l0[H264_MAX_RPLM_COUNT], rplm_l1[H264_MAX_RPLM_COUNT]; |
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uint8_t luma_log2_weight_denom; |
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uint8_t chroma_log2_weight_denom; |
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uint8_t luma_weight_l0_flag[H264_MAX_REFS]; |
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int8_t luma_weight_l0[H264_MAX_REFS]; |
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int8_t luma_offset_l0[H264_MAX_REFS]; |
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uint8_t chroma_weight_l0_flag[H264_MAX_REFS]; |
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int8_t chroma_weight_l0[H264_MAX_REFS][2]; |
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int8_t chroma_offset_l0[H264_MAX_REFS][2]; |
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uint8_t luma_weight_l1_flag[H264_MAX_REFS]; |
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int8_t luma_weight_l1[H264_MAX_REFS]; |
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int8_t luma_offset_l1[H264_MAX_REFS]; |
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uint8_t chroma_weight_l1_flag[H264_MAX_REFS]; |
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int8_t chroma_weight_l1[H264_MAX_REFS][2]; |
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int8_t chroma_offset_l1[H264_MAX_REFS][2]; |
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uint8_t no_output_of_prior_pics_flag; |
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uint8_t long_term_reference_flag; |
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uint8_t adaptive_ref_pic_marking_mode_flag; |
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struct { |
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uint8_t memory_management_control_operation; |
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int32_t difference_of_pic_nums_minus1; |
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uint8_t long_term_pic_num; |
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uint8_t long_term_frame_idx; |
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uint8_t max_long_term_frame_idx_plus1; |
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} mmco[H264_MAX_MMCO_COUNT]; |
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uint8_t cabac_init_idc; |
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int8_t slice_qp_delta; |
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uint8_t sp_for_switch_flag; |
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int8_t slice_qs_delta; |
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uint8_t disable_deblocking_filter_idc; |
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int8_t slice_alpha_c0_offset_div2; |
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int8_t slice_beta_offset_div2; |
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uint16_t slice_group_change_cycle; |
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} H264RawSliceHeader; |
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typedef struct H264RawSlice { |
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H264RawSliceHeader header; |
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uint8_t *data; |
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size_t data_size; |
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int data_bit_start; |
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AVBufferRef *data_ref; |
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} H264RawSlice; |
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typedef struct H264RawFiller { |
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H264RawNALUnitHeader nal_unit_header; |
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uint32_t filler_size; |
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} H264RawFiller; |
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typedef struct CodedBitstreamH264Context { |
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// Reader/writer context in common with the H.265 implementation. |
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CodedBitstreamH2645Context common; |
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// All currently available parameter sets. These are updated when |
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// any parameter set NAL unit is read/written with this context. |
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H264RawSPS *sps[H264_MAX_SPS_COUNT]; |
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H264RawPPS *pps[H264_MAX_PPS_COUNT]; |
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// The currently active parameter sets. These are updated when any |
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// NAL unit refers to the relevant parameter set. These pointers |
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// must also be present in the arrays above. |
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const H264RawSPS *active_sps; |
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const H264RawPPS *active_pps; |
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// The NAL unit type of the most recent normal slice. This is required |
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// to be able to read/write auxiliary slices, because IdrPicFlag is |
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// otherwise unknown. |
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uint8_t last_slice_nal_unit_type; |
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} CodedBitstreamH264Context; |
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/** |
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* Add an SEI message to an access unit. |
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*/ |
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int ff_cbs_h264_add_sei_message(CodedBitstreamContext *ctx, |
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CodedBitstreamFragment *access_unit, |
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const H264RawSEIPayload *payload); |
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/** |
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* Delete an SEI message from an access unit. |
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* |
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* Deletes from nal_unit, which must be an SEI NAL unit. If this is the |
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* last message in nal_unit, also deletes it from access_unit. |
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*/ |
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int ff_cbs_h264_delete_sei_message(CodedBitstreamContext *ctx, |
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CodedBitstreamFragment *access_unit, |
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CodedBitstreamUnit *nal_unit, |
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int position); |
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#endif /* AVCODEC_CBS_H264_H */
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