mirror of https://github.com/FFmpeg/FFmpeg.git
* commit 'f638b67e5790735f34620bf82025c9b9d6fc7216': h264: move the parameter set definitions to a new header file Conflicts: libavcodec/h264_parse.h libavcodec/h264_ps.c libavcodec/h264dec.h Merged-by: James Almer <jamrial@gmail.com>pull/228/head
James Almer
9 years ago
commit
8c7932884d
15 changed files with 181 additions and 136 deletions
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/*
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/**
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* @file |
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* H.264 parameter set handling |
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*/ |
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#ifndef AVCODEC_H264_PS_H |
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#define AVCODEC_H264_PS_H |
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#include <stdint.h> |
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#include "libavutil/buffer.h" |
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#include "libavutil/pixfmt.h" |
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#include "libavutil/rational.h" |
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#include "avcodec.h" |
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#include "get_bits.h" |
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#include "h264.h" |
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#define MAX_SPS_COUNT 32 |
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#define MAX_PPS_COUNT 256 |
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/**
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* Sequence parameter set |
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*/ |
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typedef struct SPS { |
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unsigned int sps_id; |
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int profile_idc; |
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int level_idc; |
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int chroma_format_idc; |
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int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
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int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
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int poc_type; ///< pic_order_cnt_type
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int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
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int delta_pic_order_always_zero_flag; |
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int offset_for_non_ref_pic; |
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int offset_for_top_to_bottom_field; |
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int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
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int ref_frame_count; ///< num_ref_frames
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int gaps_in_frame_num_allowed_flag; |
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int mb_width; ///< pic_width_in_mbs_minus1 + 1
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int mb_height; ///< pic_height_in_map_units_minus1 + 1
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int frame_mbs_only_flag; |
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int mb_aff; ///< mb_adaptive_frame_field_flag
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int direct_8x8_inference_flag; |
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int crop; ///< frame_cropping_flag
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/* those 4 are already in luma samples */ |
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unsigned int crop_left; ///< frame_cropping_rect_left_offset
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unsigned int crop_right; ///< frame_cropping_rect_right_offset
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unsigned int crop_top; ///< frame_cropping_rect_top_offset
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unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
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int vui_parameters_present_flag; |
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AVRational sar; |
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int video_signal_type_present_flag; |
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int full_range; |
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int colour_description_present_flag; |
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enum AVColorPrimaries color_primaries; |
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enum AVColorTransferCharacteristic color_trc; |
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enum AVColorSpace colorspace; |
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int 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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int fixed_frame_rate_flag; |
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short offset_for_ref_frame[256]; // FIXME dyn aloc?
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int bitstream_restriction_flag; |
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int num_reorder_frames; |
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int scaling_matrix_present; |
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uint8_t scaling_matrix4[6][16]; |
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uint8_t scaling_matrix8[6][64]; |
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int nal_hrd_parameters_present_flag; |
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int vcl_hrd_parameters_present_flag; |
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int pic_struct_present_flag; |
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int time_offset_length; |
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int cpb_cnt; ///< See H.264 E.1.2
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int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
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int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
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int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
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int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
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int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
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int residual_color_transform_flag; ///< residual_colour_transform_flag
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int constraint_set_flags; ///< constraint_set[0-3]_flag
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uint8_t data[4096]; |
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size_t data_size; |
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} SPS; |
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/**
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* Picture parameter set |
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*/ |
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typedef struct PPS { |
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unsigned int sps_id; |
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int cabac; ///< entropy_coding_mode_flag
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int pic_order_present; ///< pic_order_present_flag
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int slice_group_count; ///< num_slice_groups_minus1 + 1
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int mb_slice_group_map_type; |
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unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
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int weighted_pred; ///< weighted_pred_flag
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int weighted_bipred_idc; |
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int init_qp; ///< pic_init_qp_minus26 + 26
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int init_qs; ///< pic_init_qs_minus26 + 26
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int chroma_qp_index_offset[2]; |
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int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
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int constrained_intra_pred; ///< constrained_intra_pred_flag
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int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
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int transform_8x8_mode; ///< transform_8x8_mode_flag
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uint8_t scaling_matrix4[6][16]; |
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uint8_t scaling_matrix8[6][64]; |
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uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
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int chroma_qp_diff; |
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uint8_t data[4096]; |
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size_t data_size; |
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uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; |
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uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64]; |
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uint32_t(*dequant4_coeff[6])[16]; |
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uint32_t(*dequant8_coeff[6])[64]; |
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} PPS; |
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typedef struct H264ParamSets { |
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AVBufferRef *sps_list[MAX_SPS_COUNT]; |
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AVBufferRef *pps_list[MAX_PPS_COUNT]; |
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AVBufferRef *pps_ref; |
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AVBufferRef *sps_ref; |
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/* currently active parameters sets */ |
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const PPS *pps; |
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const SPS *sps; |
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} H264ParamSets; |
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/**
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* Decode SPS |
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*/ |
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int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, |
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H264ParamSets *ps, int ignore_truncation); |
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/**
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* Decode PPS |
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*/ |
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int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avctx, |
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H264ParamSets *ps, int bit_length); |
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#endif /* AVCODEC_H264_PS_H */ |
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