/* * 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_CBS_H264_H #define AVCODEC_CBS_H264_H #include <stddef.h> #include <stdint.h> #include "cbs.h" #include "cbs_h2645.h" #include "h264.h" enum { // This limit is arbitrary - it is sufficient for one message of each // type plus some repeats, and will therefore easily cover all sane // streams. However, it is possible to make technically-valid streams // for which it will fail (for example, by including a large number of // user-data-unregistered messages). H264_MAX_SEI_PAYLOADS = 64, }; typedef struct H264RawNALUnitHeader { uint8_t forbidden_zero_bit; uint8_t nal_ref_idc; uint8_t nal_unit_type; uint8_t svc_extension_flag; uint8_t avc_3d_extension_flag; } H264RawNALUnitHeader; typedef struct H264RawScalingList { int8_t delta_scale[64]; } H264RawScalingList; typedef struct H264RawHRD { uint8_t cpb_cnt_minus1; uint8_t bit_rate_scale; uint8_t cpb_size_scale; uint32_t bit_rate_value_minus1[H264_MAX_CPB_CNT]; uint32_t cpb_size_value_minus1[H264_MAX_CPB_CNT]; uint8_t cbr_flag[H264_MAX_CPB_CNT]; uint8_t initial_cpb_removal_delay_length_minus1; uint8_t cpb_removal_delay_length_minus1; uint8_t dpb_output_delay_length_minus1; uint8_t time_offset_length; } H264RawHRD; typedef struct H264RawVUI { uint8_t aspect_ratio_info_present_flag; uint8_t aspect_ratio_idc; uint16_t sar_width; uint16_t sar_height; uint8_t overscan_info_present_flag; uint8_t overscan_appropriate_flag; uint8_t video_signal_type_present_flag; uint8_t video_format; uint8_t video_full_range_flag; uint8_t colour_description_present_flag; uint8_t colour_primaries; uint8_t transfer_characteristics; uint8_t matrix_coefficients; uint8_t chroma_loc_info_present_flag; uint8_t chroma_sample_loc_type_top_field; uint8_t chroma_sample_loc_type_bottom_field; uint8_t timing_info_present_flag; uint32_t num_units_in_tick; uint32_t time_scale; uint8_t fixed_frame_rate_flag; uint8_t nal_hrd_parameters_present_flag; H264RawHRD nal_hrd_parameters; uint8_t vcl_hrd_parameters_present_flag; H264RawHRD vcl_hrd_parameters; uint8_t low_delay_hrd_flag; uint8_t pic_struct_present_flag; uint8_t bitstream_restriction_flag; uint8_t motion_vectors_over_pic_boundaries_flag; uint8_t max_bytes_per_pic_denom; uint8_t max_bits_per_mb_denom; uint8_t log2_max_mv_length_horizontal; uint8_t log2_max_mv_length_vertical; uint8_t max_num_reorder_frames; uint8_t max_dec_frame_buffering; } H264RawVUI; typedef struct H264RawSPS { H264RawNALUnitHeader nal_unit_header; uint8_t profile_idc; uint8_t constraint_set0_flag; uint8_t constraint_set1_flag; uint8_t constraint_set2_flag; uint8_t constraint_set3_flag; uint8_t constraint_set4_flag; uint8_t constraint_set5_flag; uint8_t reserved_zero_2bits; uint8_t level_idc; uint8_t seq_parameter_set_id; uint8_t chroma_format_idc; uint8_t separate_colour_plane_flag; uint8_t bit_depth_luma_minus8; uint8_t bit_depth_chroma_minus8; uint8_t qpprime_y_zero_transform_bypass_flag; uint8_t seq_scaling_matrix_present_flag; uint8_t seq_scaling_list_present_flag[12]; H264RawScalingList scaling_list_4x4[6]; H264RawScalingList scaling_list_8x8[6]; uint8_t log2_max_frame_num_minus4; uint8_t pic_order_cnt_type; uint8_t log2_max_pic_order_cnt_lsb_minus4; uint8_t delta_pic_order_always_zero_flag; int32_t offset_for_non_ref_pic; int32_t offset_for_top_to_bottom_field; uint8_t num_ref_frames_in_pic_order_cnt_cycle; int32_t offset_for_ref_frame[256]; uint8_t max_num_ref_frames; uint8_t gaps_in_frame_num_allowed_flag; uint16_t pic_width_in_mbs_minus1; uint16_t pic_height_in_map_units_minus1; uint8_t frame_mbs_only_flag; uint8_t mb_adaptive_frame_field_flag; uint8_t direct_8x8_inference_flag; uint8_t frame_cropping_flag; uint16_t frame_crop_left_offset; uint16_t frame_crop_right_offset; uint16_t frame_crop_top_offset; uint16_t frame_crop_bottom_offset; uint8_t vui_parameters_present_flag; H264RawVUI vui; } H264RawSPS; typedef struct H264RawSPSExtension { H264RawNALUnitHeader nal_unit_header; uint8_t seq_parameter_set_id; uint8_t aux_format_idc; uint8_t bit_depth_aux_minus8; uint8_t alpha_incr_flag; uint16_t alpha_opaque_value; uint16_t alpha_transparent_value; uint8_t additional_extension_flag; } H264RawSPSExtension; typedef struct H264RawPPS { H264RawNALUnitHeader nal_unit_header; uint8_t pic_parameter_set_id; uint8_t seq_parameter_set_id; uint8_t entropy_coding_mode_flag; uint8_t bottom_field_pic_order_in_frame_present_flag; uint8_t num_slice_groups_minus1; uint8_t slice_group_map_type; uint16_t run_length_minus1[H264_MAX_SLICE_GROUPS]; uint16_t top_left[H264_MAX_SLICE_GROUPS]; uint16_t bottom_right[H264_MAX_SLICE_GROUPS]; uint8_t slice_group_change_direction_flag; uint16_t slice_group_change_rate_minus1; uint16_t pic_size_in_map_units_minus1; uint8_t *slice_group_id; AVBufferRef *slice_group_id_ref; uint8_t num_ref_idx_l0_default_active_minus1; uint8_t num_ref_idx_l1_default_active_minus1; uint8_t weighted_pred_flag; uint8_t weighted_bipred_idc; int8_t pic_init_qp_minus26; int8_t pic_init_qs_minus26; int8_t chroma_qp_index_offset; uint8_t deblocking_filter_control_present_flag; uint8_t constrained_intra_pred_flag; uint8_t more_rbsp_data; uint8_t redundant_pic_cnt_present_flag; uint8_t transform_8x8_mode_flag; uint8_t pic_scaling_matrix_present_flag; uint8_t pic_scaling_list_present_flag[12]; H264RawScalingList scaling_list_4x4[6]; H264RawScalingList scaling_list_8x8[6]; int8_t second_chroma_qp_index_offset; } H264RawPPS; typedef struct H264RawAUD { H264RawNALUnitHeader nal_unit_header; uint8_t primary_pic_type; } H264RawAUD; typedef struct H264RawSEIBufferingPeriod { uint8_t seq_parameter_set_id; struct { uint32_t initial_cpb_removal_delay[H264_MAX_CPB_CNT]; uint32_t initial_cpb_removal_delay_offset[H264_MAX_CPB_CNT]; } nal, vcl; } H264RawSEIBufferingPeriod; typedef struct H264RawSEIPicTimestamp { uint8_t ct_type; uint8_t nuit_field_based_flag; uint8_t counting_type; uint8_t full_timestamp_flag; uint8_t discontinuity_flag; uint8_t cnt_dropped_flag; uint8_t n_frames; uint8_t seconds_flag; uint8_t seconds_value; uint8_t minutes_flag; uint8_t minutes_value; uint8_t hours_flag; uint8_t hours_value; uint32_t time_offset; } H264RawSEIPicTimestamp; typedef struct H264RawSEIPicTiming { uint32_t cpb_removal_delay; uint32_t dpb_output_delay; uint8_t pic_struct; uint8_t clock_timestamp_flag[3]; H264RawSEIPicTimestamp timestamp[3]; } H264RawSEIPicTiming; typedef struct H264RawSEIPanScanRect { uint32_t pan_scan_rect_id; uint8_t pan_scan_rect_cancel_flag; uint8_t pan_scan_cnt_minus1; int32_t pan_scan_rect_left_offset[3]; int32_t pan_scan_rect_right_offset[3]; int32_t pan_scan_rect_top_offset[3]; int32_t pan_scan_rect_bottom_offset[3]; uint16_t pan_scan_rect_repetition_period; } H264RawSEIPanScanRect; typedef struct H264RawSEIUserDataRegistered { uint8_t itu_t_t35_country_code; uint8_t itu_t_t35_country_code_extension_byte; uint8_t *data; size_t data_length; AVBufferRef *data_ref; } H264RawSEIUserDataRegistered; typedef struct H264RawSEIUserDataUnregistered { uint8_t uuid_iso_iec_11578[16]; uint8_t *data; size_t data_length; AVBufferRef *data_ref; } H264RawSEIUserDataUnregistered; typedef struct H264RawSEIRecoveryPoint { uint16_t recovery_frame_cnt; uint8_t exact_match_flag; uint8_t broken_link_flag; uint8_t changing_slice_group_idc; } H264RawSEIRecoveryPoint; typedef struct H264RawSEIDisplayOrientation { uint8_t display_orientation_cancel_flag; uint8_t hor_flip; uint8_t ver_flip; uint16_t anticlockwise_rotation; uint16_t display_orientation_repetition_period; uint8_t display_orientation_extension_flag; } H264RawSEIDisplayOrientation; typedef struct H264RawSEIMasteringDisplayColourVolume { uint16_t display_primaries_x[3]; uint16_t display_primaries_y[3]; uint16_t white_point_x; uint16_t white_point_y; uint32_t max_display_mastering_luminance; uint32_t min_display_mastering_luminance; } H264RawSEIMasteringDisplayColourVolume; typedef struct H264RawSEIPayload { uint32_t payload_type; uint32_t payload_size; union { H264RawSEIBufferingPeriod buffering_period; H264RawSEIPicTiming pic_timing; H264RawSEIPanScanRect pan_scan_rect; // H264RawSEIFiller filler -> no fields. H264RawSEIUserDataRegistered user_data_registered; H264RawSEIUserDataUnregistered user_data_unregistered; H264RawSEIRecoveryPoint recovery_point; H264RawSEIDisplayOrientation display_orientation; H264RawSEIMasteringDisplayColourVolume mastering_display_colour_volume; struct { uint8_t *data; size_t data_length; AVBufferRef *data_ref; } other; } payload; } H264RawSEIPayload; typedef struct H264RawSEI { H264RawNALUnitHeader nal_unit_header; H264RawSEIPayload payload[H264_MAX_SEI_PAYLOADS]; uint8_t payload_count; } H264RawSEI; typedef struct H264RawSliceHeader { H264RawNALUnitHeader nal_unit_header; uint32_t first_mb_in_slice; uint8_t slice_type; uint8_t pic_parameter_set_id; uint8_t colour_plane_id; uint16_t frame_num; uint8_t field_pic_flag; uint8_t bottom_field_flag; uint16_t idr_pic_id; uint16_t pic_order_cnt_lsb; int32_t delta_pic_order_cnt_bottom; int32_t delta_pic_order_cnt[2]; uint8_t redundant_pic_cnt; uint8_t direct_spatial_mv_pred_flag; uint8_t num_ref_idx_active_override_flag; uint8_t num_ref_idx_l0_active_minus1; uint8_t num_ref_idx_l1_active_minus1; uint8_t ref_pic_list_modification_flag_l0; uint8_t ref_pic_list_modification_flag_l1; struct { uint8_t modification_of_pic_nums_idc; int32_t abs_diff_pic_num_minus1; uint8_t long_term_pic_num; } rplm_l0[H264_MAX_RPLM_COUNT], rplm_l1[H264_MAX_RPLM_COUNT]; uint8_t luma_log2_weight_denom; uint8_t chroma_log2_weight_denom; uint8_t luma_weight_l0_flag[H264_MAX_REFS]; int8_t luma_weight_l0[H264_MAX_REFS]; int8_t luma_offset_l0[H264_MAX_REFS]; uint8_t chroma_weight_l0_flag[H264_MAX_REFS]; int8_t chroma_weight_l0[H264_MAX_REFS][2]; int8_t chroma_offset_l0[H264_MAX_REFS][2]; uint8_t luma_weight_l1_flag[H264_MAX_REFS]; int8_t luma_weight_l1[H264_MAX_REFS]; int8_t luma_offset_l1[H264_MAX_REFS]; uint8_t chroma_weight_l1_flag[H264_MAX_REFS]; int8_t chroma_weight_l1[H264_MAX_REFS][2]; int8_t chroma_offset_l1[H264_MAX_REFS][2]; uint8_t no_output_of_prior_pics_flag; uint8_t long_term_reference_flag; uint8_t adaptive_ref_pic_marking_mode_flag; struct { uint8_t memory_management_control_operation; int32_t difference_of_pic_nums_minus1; uint8_t long_term_pic_num; uint8_t long_term_frame_idx; uint8_t max_long_term_frame_idx_plus1; } mmco[H264_MAX_MMCO_COUNT]; uint8_t cabac_init_idc; int8_t slice_qp_delta; uint8_t sp_for_switch_flag; int8_t slice_qs_delta; uint8_t disable_deblocking_filter_idc; int8_t slice_alpha_c0_offset_div2; int8_t slice_beta_offset_div2; uint16_t slice_group_change_cycle; } H264RawSliceHeader; typedef struct H264RawSlice { H264RawSliceHeader header; uint8_t *data; size_t data_size; int data_bit_start; AVBufferRef *data_ref; } H264RawSlice; typedef struct H264RawFiller { H264RawNALUnitHeader nal_unit_header; uint32_t filler_size; } H264RawFiller; typedef struct CodedBitstreamH264Context { // Reader/writer context in common with the H.265 implementation. CodedBitstreamH2645Context common; // All currently available parameter sets. These are updated when // any parameter set NAL unit is read/written with this context. AVBufferRef *sps_ref[H264_MAX_SPS_COUNT]; AVBufferRef *pps_ref[H264_MAX_PPS_COUNT]; H264RawSPS *sps[H264_MAX_SPS_COUNT]; H264RawPPS *pps[H264_MAX_PPS_COUNT]; // The currently active parameter sets. These are updated when any // NAL unit refers to the relevant parameter set. These pointers // must also be present in the arrays above. const H264RawSPS *active_sps; const H264RawPPS *active_pps; // The NAL unit type of the most recent normal slice. This is required // to be able to read/write auxiliary slices, because IdrPicFlag is // otherwise unknown. uint8_t last_slice_nal_unit_type; } CodedBitstreamH264Context; /** * Add an SEI message to an access unit. */ int ff_cbs_h264_add_sei_message(CodedBitstreamContext *ctx, CodedBitstreamFragment *access_unit, const H264RawSEIPayload *payload); /** * Delete an SEI message from an access unit. * * Deletes from nal_unit, which must be an SEI NAL unit. If this is the * last message in nal_unit, also deletes it from access_unit. */ int ff_cbs_h264_delete_sei_message(CodedBitstreamContext *ctx, CodedBitstreamFragment *access_unit, CodedBitstreamUnit *nal_unit, int position); #endif /* AVCODEC_CBS_H264_H */