| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Tretter | 720 | 100.00% | 1 | 100.00% |
| Total | 720 | 1 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2019 Pengutronix, Michael Tretter <kernel@pengutronix.de> * * Convert NAL units between raw byte sequence payloads (RBSP) and C structs. */ #ifndef __NAL_H264_H__ #define __NAL_H264_H__ #include <linux/kernel.h> #include <linux/types.h> /** * struct nal_h264_hdr_parameters - HDR parameters * * C struct representation of the sequence parameter set NAL unit as defined by * Rec. ITU-T H.264 (04/2017) E.1.2 HRD parameters syntax. */ struct nal_h264_hrd_parameters { unsigned int cpb_cnt_minus1; unsigned int bit_rate_scale; unsigned int cpb_size_scale; struct { int bit_rate_value_minus1[16]; int cpb_size_value_minus1[16]; unsigned int cbr_flag[16]; }; unsigned int initial_cpb_removal_delay_length_minus1; unsigned int cpb_removal_delay_length_minus1; unsigned int dpb_output_delay_length_minus1; unsigned int time_offset_length; }; /** * struct nal_h264_vui_parameters - VUI parameters * * C struct representation of the VUI parameters as defined by Rec. ITU-T * H.264 (04/2017) E.1.1 VUI parameters syntax. */ struct nal_h264_vui_parameters { unsigned int aspect_ratio_info_present_flag; struct { unsigned int aspect_ratio_idc; unsigned int sar_width; unsigned int sar_height; }; unsigned int overscan_info_present_flag; unsigned int overscan_appropriate_flag; unsigned int video_signal_type_present_flag; struct { unsigned int video_format; unsigned int video_full_range_flag; unsigned int colour_description_present_flag; struct { unsigned int colour_primaries; unsigned int transfer_characteristics; unsigned int matrix_coefficients; }; }; unsigned int chroma_loc_info_present_flag; struct { unsigned int chroma_sample_loc_type_top_field; unsigned int chroma_sample_loc_type_bottom_field; }; unsigned int timing_info_present_flag; struct { unsigned int num_units_in_tick; unsigned int time_scale; unsigned int fixed_frame_rate_flag; }; unsigned int nal_hrd_parameters_present_flag; struct nal_h264_hrd_parameters nal_hrd_parameters; unsigned int vcl_hrd_parameters_present_flag; struct nal_h264_hrd_parameters vcl_hrd_parameters; unsigned int low_delay_hrd_flag; unsigned int pic_struct_present_flag; unsigned int bitstream_restriction_flag; struct { unsigned int motion_vectors_over_pic_boundaries_flag; unsigned int max_bytes_per_pic_denom; unsigned int max_bits_per_mb_denom; unsigned int log2_max_mv_length_horizontal; unsigned int log21_max_mv_length_vertical; unsigned int max_num_reorder_frames; unsigned int max_dec_frame_buffering; }; }; /** * struct nal_h264_sps - Sequence parameter set * * C struct representation of the sequence parameter set NAL unit as defined by * Rec. ITU-T H.264 (04/2017) 7.3.2.1.1 Sequence parameter set data syntax. */ struct nal_h264_sps { unsigned int profile_idc; unsigned int constraint_set0_flag; unsigned int constraint_set1_flag; unsigned int constraint_set2_flag; unsigned int constraint_set3_flag; unsigned int constraint_set4_flag; unsigned int constraint_set5_flag; unsigned int reserved_zero_2bits; unsigned int level_idc; unsigned int seq_parameter_set_id; struct { unsigned int chroma_format_idc; unsigned int separate_colour_plane_flag; unsigned int bit_depth_luma_minus8; unsigned int bit_depth_chroma_minus8; unsigned int qpprime_y_zero_transform_bypass_flag; unsigned int seq_scaling_matrix_present_flag; }; unsigned int log2_max_frame_num_minus4; unsigned int pic_order_cnt_type; union { unsigned int log2_max_pic_order_cnt_lsb_minus4; struct { unsigned int delta_pic_order_always_zero_flag; int offset_for_non_ref_pic; int offset_for_top_to_bottom_field; unsigned int num_ref_frames_in_pic_order_cnt_cycle; int offset_for_ref_frame[255]; }; }; unsigned int max_num_ref_frames; unsigned int gaps_in_frame_num_value_allowed_flag; unsigned int pic_width_in_mbs_minus1; unsigned int pic_height_in_map_units_minus1; unsigned int frame_mbs_only_flag; unsigned int mb_adaptive_frame_field_flag; unsigned int direct_8x8_inference_flag; unsigned int frame_cropping_flag; struct { unsigned int crop_left; unsigned int crop_right; unsigned int crop_top; unsigned int crop_bottom; }; unsigned int vui_parameters_present_flag; struct nal_h264_vui_parameters vui; }; /** * struct nal_h264_pps - Picture parameter set * * C struct representation of the picture parameter set NAL unit as defined by * Rec. ITU-T H.264 (04/2017) 7.3.2.2 Picture parameter set RBSP syntax. */ struct nal_h264_pps { unsigned int pic_parameter_set_id; unsigned int seq_parameter_set_id; unsigned int entropy_coding_mode_flag; unsigned int bottom_field_pic_order_in_frame_present_flag; unsigned int num_slice_groups_minus1; unsigned int slice_group_map_type; union { unsigned int run_length_minus1[8]; struct { unsigned int top_left[8]; unsigned int bottom_right[8]; }; struct { unsigned int slice_group_change_direction_flag; unsigned int slice_group_change_rate_minus1; }; struct { unsigned int pic_size_in_map_units_minus1; unsigned int slice_group_id[8]; }; }; unsigned int num_ref_idx_l0_default_active_minus1; unsigned int num_ref_idx_l1_default_active_minus1; unsigned int weighted_pred_flag; unsigned int weighted_bipred_idc; int pic_init_qp_minus26; int pic_init_qs_minus26; int chroma_qp_index_offset; unsigned int deblocking_filter_control_present_flag; unsigned int constrained_intra_pred_flag; unsigned int redundant_pic_cnt_present_flag; struct { unsigned int transform_8x8_mode_flag; unsigned int pic_scaling_matrix_present_flag; int second_chroma_qp_index_offset; }; }; int nal_h264_profile_from_v4l2(enum v4l2_mpeg_video_h264_profile profile); int nal_h264_level_from_v4l2(enum v4l2_mpeg_video_h264_level level); ssize_t nal_h264_write_sps(const struct device *dev, void *dest, size_t n, struct nal_h264_sps *sps); ssize_t nal_h264_read_sps(const struct device *dev, struct nal_h264_sps *sps, void *src, size_t n); void nal_h264_print_sps(const struct device *dev, struct nal_h264_sps *sps); ssize_t nal_h264_write_pps(const struct device *dev, void *dest, size_t n, struct nal_h264_pps *pps); ssize_t nal_h264_read_pps(const struct device *dev, struct nal_h264_pps *pps, void *src, size_t n); void nal_h264_print_pps(const struct device *dev, struct nal_h264_pps *pps); ssize_t nal_h264_write_filler(const struct device *dev, void *dest, size_t n); ssize_t nal_h264_read_filler(const struct device *dev, void *src, size_t n); #endif /* __NAL_H264_H__ */
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