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082cf97106
No meassureable speed difference on pentium dual & cathedral sample. Originally committed as revision 21159 to svn://svn.ffmpeg.org/ffmpeg/trunk
806 lines
26 KiB
C
806 lines
26 KiB
C
/*
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* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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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 libavcodec/h264.h
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* H.264 / AVC / MPEG4 part10 codec.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_H264_H
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#define AVCODEC_H264_H
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#include "dsputil.h"
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#include "cabac.h"
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#include "mpegvideo.h"
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#include "h264pred.h"
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#define interlaced_dct interlaced_dct_is_a_bad_name
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#define mb_intra mb_intra_is_not_initialized_see_mb_type
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#define LUMA_DC_BLOCK_INDEX 25
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#define CHROMA_DC_BLOCK_INDEX 26
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#define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
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#define COEFF_TOKEN_VLC_BITS 8
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#define TOTAL_ZEROS_VLC_BITS 9
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#define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
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#define RUN_VLC_BITS 3
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#define RUN7_VLC_BITS 6
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#define MAX_SPS_COUNT 32
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#define MAX_PPS_COUNT 256
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#define MAX_MMCO_COUNT 66
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#define MAX_DELAYED_PIC_COUNT 16
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/* Compiling in interlaced support reduces the speed
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* of progressive decoding by about 2%. */
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#define ALLOW_INTERLACE
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#define ALLOW_NOCHROMA
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/**
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* The maximum number of slices supported by the decoder.
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* must be a power of 2
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*/
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#define MAX_SLICES 16
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#ifdef ALLOW_INTERLACE
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#define MB_MBAFF h->mb_mbaff
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#define MB_FIELD h->mb_field_decoding_flag
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#define FRAME_MBAFF h->mb_aff_frame
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#define FIELD_PICTURE (s->picture_structure != PICT_FRAME)
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#else
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#define MB_MBAFF 0
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#define MB_FIELD 0
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#define FRAME_MBAFF 0
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#define FIELD_PICTURE 0
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#undef IS_INTERLACED
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#define IS_INTERLACED(mb_type) 0
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#endif
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#define FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF || FIELD_PICTURE)
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#ifdef ALLOW_NOCHROMA
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#define CHROMA h->sps.chroma_format_idc
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#else
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#define CHROMA 1
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#endif
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#define EXTENDED_SAR 255
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#define MB_TYPE_REF0 MB_TYPE_ACPRED //dirty but it fits in 16 bit
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#define MB_TYPE_8x8DCT 0x01000000
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#define IS_REF0(a) ((a) & MB_TYPE_REF0)
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#define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
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/* NAL unit types */
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enum {
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NAL_SLICE=1,
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NAL_DPA,
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NAL_DPB,
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NAL_DPC,
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NAL_IDR_SLICE,
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NAL_SEI,
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NAL_SPS,
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NAL_PPS,
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NAL_AUD,
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NAL_END_SEQUENCE,
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NAL_END_STREAM,
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NAL_FILLER_DATA,
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NAL_SPS_EXT,
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NAL_AUXILIARY_SLICE=19
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};
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/**
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* SEI message types
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*/
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typedef enum {
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SEI_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
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SEI_TYPE_PIC_TIMING = 1, ///< picture timing
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SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
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SEI_TYPE_RECOVERY_POINT = 6 ///< recovery point (frame # to decoder sync)
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} SEI_Type;
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/**
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* pic_struct in picture timing SEI message
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*/
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typedef enum {
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SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
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SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
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SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
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SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
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SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
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SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
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SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
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SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
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SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
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} SEI_PicStructType;
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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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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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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[2][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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}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[2][64];
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uint8_t chroma_qp_table[2][64]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
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int chroma_qp_diff;
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}PPS;
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/**
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* Memory management control operation opcode.
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*/
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typedef enum MMCOOpcode{
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MMCO_END=0,
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MMCO_SHORT2UNUSED,
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MMCO_LONG2UNUSED,
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MMCO_SHORT2LONG,
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MMCO_SET_MAX_LONG,
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MMCO_RESET,
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MMCO_LONG,
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} MMCOOpcode;
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/**
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* Memory management control operation.
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*/
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typedef struct MMCO{
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MMCOOpcode opcode;
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int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
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int long_arg; ///< index, pic_num, or num long refs depending on opcode
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} MMCO;
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/**
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* H264Context
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*/
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typedef struct H264Context{
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MpegEncContext s;
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int nal_ref_idc;
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int nal_unit_type;
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uint8_t *rbsp_buffer[2];
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unsigned int rbsp_buffer_size[2];
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/**
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* Used to parse AVC variant of h264
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*/
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int is_avc; ///< this flag is != 0 if codec is avc1
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int got_avcC; ///< flag used to parse avcC data only once
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int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
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int chroma_qp[2]; //QPc
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int prev_mb_skipped;
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int next_mb_skipped;
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//prediction stuff
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int chroma_pred_mode;
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int intra16x16_pred_mode;
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int top_mb_xy;
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int left_mb_xy[2];
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int8_t intra4x4_pred_mode_cache[5*8];
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int8_t (*intra4x4_pred_mode)[8];
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H264PredContext hpc;
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unsigned int topleft_samples_available;
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unsigned int top_samples_available;
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unsigned int topright_samples_available;
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unsigned int left_samples_available;
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uint8_t (*top_borders[2])[16+2*8];
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uint8_t left_border[2*(17+2*9)];
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/**
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* non zero coeff count cache.
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* is 64 if not available.
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*/
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DECLARE_ALIGNED_8(uint8_t, non_zero_count_cache[6*8]);
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uint8_t (*non_zero_count)[16];
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/**
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* Motion vector cache.
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*/
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DECLARE_ALIGNED_8(int16_t, mv_cache[2][5*8][2]);
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DECLARE_ALIGNED_8(int8_t, ref_cache[2][5*8]);
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#define LIST_NOT_USED -1 //FIXME rename?
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#define PART_NOT_AVAILABLE -2
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/**
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* is 1 if the specific list MV&references are set to 0,0,-2.
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*/
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int mv_cache_clean[2];
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/**
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* number of neighbors (top and/or left) that used 8x8 dct
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*/
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int neighbor_transform_size;
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/**
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* block_offset[ 0..23] for frame macroblocks
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* block_offset[24..47] for field macroblocks
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*/
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int block_offset[2*(16+8)];
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uint32_t *mb2b_xy; //FIXME are these 4 a good idea?
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uint32_t *mb2b8_xy;
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int b_stride; //FIXME use s->b4_stride
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int b8_stride;
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int mb_linesize; ///< may be equal to s->linesize or s->linesize*2, for mbaff
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int mb_uvlinesize;
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int emu_edge_width;
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int emu_edge_height;
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int halfpel_flag;
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int thirdpel_flag;
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int unknown_svq3_flag;
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int next_slice_index;
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SPS *sps_buffers[MAX_SPS_COUNT];
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SPS sps; ///< current sps
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PPS *pps_buffers[MAX_PPS_COUNT];
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/**
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* current pps
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*/
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PPS pps; //FIXME move to Picture perhaps? (->no) do we need that?
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uint32_t dequant4_buffer[6][52][16];
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uint32_t dequant8_buffer[2][52][64];
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uint32_t (*dequant4_coeff[6])[16];
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uint32_t (*dequant8_coeff[2])[64];
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int dequant_coeff_pps; ///< reinit tables when pps changes
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int slice_num;
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uint16_t *slice_table_base;
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uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
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int slice_type;
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int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
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int slice_type_fixed;
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//interlacing specific flags
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int mb_aff_frame;
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int mb_field_decoding_flag;
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int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
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DECLARE_ALIGNED_8(uint16_t, sub_mb_type[4]);
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//POC stuff
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int poc_lsb;
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int poc_msb;
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int delta_poc_bottom;
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int delta_poc[2];
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int frame_num;
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int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
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int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
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int frame_num_offset; ///< for POC type 2
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int prev_frame_num_offset; ///< for POC type 2
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int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
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/**
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* frame_num for frames or 2*frame_num+1 for field pics.
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*/
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int curr_pic_num;
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/**
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* max_frame_num or 2*max_frame_num for field pics.
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*/
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int max_pic_num;
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//Weighted pred stuff
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int use_weight;
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int use_weight_chroma;
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int luma_log2_weight_denom;
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int chroma_log2_weight_denom;
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int luma_weight[2][48];
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int luma_offset[2][48];
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int chroma_weight[2][48][2];
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int chroma_offset[2][48][2];
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int implicit_weight[48][48];
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//deblock
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int deblocking_filter; ///< disable_deblocking_filter_idc with 1<->0
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int slice_alpha_c0_offset;
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int slice_beta_offset;
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int redundant_pic_count;
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int direct_spatial_mv_pred;
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int dist_scale_factor[16];
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int dist_scale_factor_field[2][32];
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int map_col_to_list0[2][16+32];
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int map_col_to_list0_field[2][2][16+32];
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/**
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* num_ref_idx_l0/1_active_minus1 + 1
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*/
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unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
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unsigned int list_count;
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Picture *short_ref[32];
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Picture *long_ref[32];
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Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
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Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
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Reordered version of default_ref_list
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according to picture reordering in slice header */
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int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
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Picture *delayed_pic[MAX_DELAYED_PIC_COUNT+2]; //FIXME size?
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int outputed_poc;
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/**
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* memory management control operations buffer.
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*/
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MMCO mmco[MAX_MMCO_COUNT];
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int mmco_index;
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int long_ref_count; ///< number of actual long term references
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int short_ref_count; ///< number of actual short term references
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//data partitioning
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GetBitContext intra_gb;
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GetBitContext inter_gb;
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GetBitContext *intra_gb_ptr;
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GetBitContext *inter_gb_ptr;
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DECLARE_ALIGNED_16(DCTELEM, mb[16*24]);
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DCTELEM mb_padding[256]; ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too large or ensure that there is some unused stuff after mb
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/**
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* Cabac
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*/
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CABACContext cabac;
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uint8_t cabac_state[460];
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int cabac_init_idc;
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/* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
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uint16_t *cbp_table;
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int cbp;
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int top_cbp;
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int left_cbp;
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/* chroma_pred_mode for i4x4 or i16x16, else 0 */
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uint8_t *chroma_pred_mode_table;
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int last_qscale_diff;
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int16_t (*mvd_table[2])[2];
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DECLARE_ALIGNED_8(int16_t, mvd_cache[2][5*8][2]);
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uint8_t *direct_table;
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uint8_t direct_cache[5*8];
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uint8_t zigzag_scan[16];
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uint8_t zigzag_scan8x8[64];
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uint8_t zigzag_scan8x8_cavlc[64];
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|
uint8_t field_scan[16];
|
|
uint8_t field_scan8x8[64];
|
|
uint8_t field_scan8x8_cavlc[64];
|
|
const uint8_t *zigzag_scan_q0;
|
|
const uint8_t *zigzag_scan8x8_q0;
|
|
const uint8_t *zigzag_scan8x8_cavlc_q0;
|
|
const uint8_t *field_scan_q0;
|
|
const uint8_t *field_scan8x8_q0;
|
|
const uint8_t *field_scan8x8_cavlc_q0;
|
|
|
|
int x264_build;
|
|
|
|
/**
|
|
* @defgroup multithreading Members for slice based multithreading
|
|
* @{
|
|
*/
|
|
struct H264Context *thread_context[MAX_THREADS];
|
|
|
|
/**
|
|
* current slice number, used to initalize slice_num of each thread/context
|
|
*/
|
|
int current_slice;
|
|
|
|
/**
|
|
* Max number of threads / contexts.
|
|
* This is equal to AVCodecContext.thread_count unless
|
|
* multithreaded decoding is impossible, in which case it is
|
|
* reduced to 1.
|
|
*/
|
|
int max_contexts;
|
|
|
|
/**
|
|
* 1 if the single thread fallback warning has already been
|
|
* displayed, 0 otherwise.
|
|
*/
|
|
int single_decode_warning;
|
|
|
|
int last_slice_type;
|
|
/** @} */
|
|
|
|
int mb_xy;
|
|
|
|
uint32_t svq3_watermark_key;
|
|
|
|
/**
|
|
* pic_struct in picture timing SEI message
|
|
*/
|
|
SEI_PicStructType sei_pic_struct;
|
|
|
|
/**
|
|
* Complement sei_pic_struct
|
|
* SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
|
|
* However, soft telecined frames may have these values.
|
|
* This is used in an attempt to flag soft telecine progressive.
|
|
*/
|
|
int prev_interlaced_frame;
|
|
|
|
/**
|
|
* Bit set of clock types for fields/frames in picture timing SEI message.
|
|
* For each found ct_type, appropriate bit is set (e.g., bit 1 for
|
|
* interlaced).
|
|
*/
|
|
int sei_ct_type;
|
|
|
|
/**
|
|
* dpb_output_delay in picture timing SEI message, see H.264 C.2.2
|
|
*/
|
|
int sei_dpb_output_delay;
|
|
|
|
/**
|
|
* cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
|
|
*/
|
|
int sei_cpb_removal_delay;
|
|
|
|
/**
|
|
* recovery_frame_cnt from SEI message
|
|
*
|
|
* Set to -1 if no recovery point SEI message found or to number of frames
|
|
* before playback synchronizes. Frames having recovery point are key
|
|
* frames.
|
|
*/
|
|
int sei_recovery_frame_cnt;
|
|
|
|
int is_complex;
|
|
|
|
int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
|
|
int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
|
|
|
|
// Timestamp stuff
|
|
int sei_buffering_period_present; ///< Buffering period SEI flag
|
|
int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
|
|
}H264Context;
|
|
|
|
/**
|
|
* Decode SEI
|
|
*/
|
|
int ff_h264_decode_sei(H264Context *h);
|
|
|
|
/**
|
|
* Decode SPS
|
|
*/
|
|
int ff_h264_decode_seq_parameter_set(H264Context *h);
|
|
|
|
/**
|
|
* Decode PPS
|
|
*/
|
|
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
|
|
|
|
/**
|
|
* Decodes a network abstraction layer unit.
|
|
* @param consumed is the number of bytes used as input
|
|
* @param length is the length of the array
|
|
* @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
|
|
* @returns decoded bytes, might be src+1 if no escapes
|
|
*/
|
|
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length);
|
|
|
|
/**
|
|
* identifies the exact end of the bitstream
|
|
* @return the length of the trailing, or 0 if damaged
|
|
*/
|
|
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src);
|
|
|
|
/**
|
|
* frees any data that may have been allocated in the H264 context like SPS, PPS etc.
|
|
*/
|
|
av_cold void ff_h264_free_context(H264Context *h);
|
|
|
|
/**
|
|
* reconstructs bitstream slice_type.
|
|
*/
|
|
int ff_h264_get_slice_type(H264Context *h);
|
|
|
|
/**
|
|
* allocates tables.
|
|
* needs width/height
|
|
*/
|
|
int ff_h264_alloc_tables(H264Context *h);
|
|
|
|
/**
|
|
* checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
|
|
*/
|
|
int ff_h264_check_intra_pred_mode(H264Context *h, int mode);
|
|
|
|
void ff_h264_write_back_intra_pred_mode(H264Context *h);
|
|
void ff_h264_hl_decode_mb(H264Context *h);
|
|
int ff_h264_frame_start(H264Context *h);
|
|
av_cold int ff_h264_decode_init(AVCodecContext *avctx);
|
|
av_cold int ff_h264_decode_end(AVCodecContext *avctx);
|
|
|
|
void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
|
|
void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
|
|
|
|
/*
|
|
o-o o-o
|
|
/ / /
|
|
o-o o-o
|
|
,---'
|
|
o-o o-o
|
|
/ / /
|
|
o-o o-o
|
|
*/
|
|
//This table must be here because scan8[constant] must be known at compiletime
|
|
static const uint8_t scan8[16 + 2*4]={
|
|
4+1*8, 5+1*8, 4+2*8, 5+2*8,
|
|
6+1*8, 7+1*8, 6+2*8, 7+2*8,
|
|
4+3*8, 5+3*8, 4+4*8, 5+4*8,
|
|
6+3*8, 7+3*8, 6+4*8, 7+4*8,
|
|
1+1*8, 2+1*8,
|
|
1+2*8, 2+2*8,
|
|
1+4*8, 2+4*8,
|
|
1+5*8, 2+5*8,
|
|
};
|
|
|
|
static av_always_inline uint32_t pack16to32(int a, int b){
|
|
#if HAVE_BIGENDIAN
|
|
return (b&0xFFFF) + (a<<16);
|
|
#else
|
|
return (a&0xFFFF) + (b<<16);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
|
|
*/
|
|
static inline int check_intra4x4_pred_mode(H264Context *h){
|
|
MpegEncContext * const s = &h->s;
|
|
static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
|
|
static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
|
|
int i;
|
|
|
|
if(!(h->top_samples_available&0x8000)){
|
|
for(i=0; i<4; i++){
|
|
int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
|
|
if(status<0){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
|
|
return -1;
|
|
} else if(status){
|
|
h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
|
|
}
|
|
}
|
|
}
|
|
|
|
if((h->left_samples_available&0x8888)!=0x8888){
|
|
static const int mask[4]={0x8000,0x2000,0x80,0x20};
|
|
for(i=0; i<4; i++){
|
|
if(!(h->left_samples_available&mask[i])){
|
|
int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
|
|
if(status<0){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
|
|
return -1;
|
|
} else if(status){
|
|
h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
} //FIXME cleanup like ff_h264_check_intra_pred_mode
|
|
|
|
/**
|
|
* gets the chroma qp.
|
|
*/
|
|
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
|
|
return h->pps.chroma_qp_table[t][qscale];
|
|
}
|
|
|
|
static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
|
|
const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
|
|
MpegEncContext *s = &h->s;
|
|
|
|
/* there is no consistent mapping of mvs to neighboring locations that will
|
|
* make mbaff happy, so we can't move all this logic to fill_caches */
|
|
if(FRAME_MBAFF){
|
|
const uint32_t *mb_types = s->current_picture_ptr->mb_type;
|
|
const int16_t *mv;
|
|
*(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
|
|
*C = h->mv_cache[list][scan8[0]-2];
|
|
|
|
if(!MB_FIELD
|
|
&& (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
|
|
int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
|
|
if(IS_INTERLACED(mb_types[topright_xy])){
|
|
#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
|
|
const int x4 = X4, y4 = Y4;\
|
|
const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
|
|
if(!USES_LIST(mb_type,list))\
|
|
return LIST_NOT_USED;\
|
|
mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
|
|
h->mv_cache[list][scan8[0]-2][0] = mv[0];\
|
|
h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
|
|
return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
|
|
|
|
SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
|
|
}
|
|
}
|
|
if(topright_ref == PART_NOT_AVAILABLE
|
|
&& ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
|
|
&& h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
|
|
if(!MB_FIELD
|
|
&& IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
|
|
SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
|
|
}
|
|
if(MB_FIELD
|
|
&& !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
|
|
&& i >= scan8[0]+8){
|
|
// left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
|
|
SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
|
|
}
|
|
}
|
|
#undef SET_DIAG_MV
|
|
}
|
|
|
|
if(topright_ref != PART_NOT_AVAILABLE){
|
|
*C= h->mv_cache[list][ i - 8 + part_width ];
|
|
return topright_ref;
|
|
}else{
|
|
tprintf(s->avctx, "topright MV not available\n");
|
|
|
|
*C= h->mv_cache[list][ i - 8 - 1 ];
|
|
return h->ref_cache[list][ i - 8 - 1 ];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gets the predicted MV.
|
|
* @param n the block index
|
|
* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
|
|
* @param mx the x component of the predicted motion vector
|
|
* @param my the y component of the predicted motion vector
|
|
*/
|
|
static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
|
|
const int index8= scan8[n];
|
|
const int top_ref= h->ref_cache[list][ index8 - 8 ];
|
|
const int left_ref= h->ref_cache[list][ index8 - 1 ];
|
|
const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
|
|
const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
|
|
const int16_t * C;
|
|
int diagonal_ref, match_count;
|
|
|
|
assert(part_width==1 || part_width==2 || part_width==4);
|
|
|
|
/* mv_cache
|
|
B . . A T T T T
|
|
U . . L . . , .
|
|
U . . L . . . .
|
|
U . . L . . , .
|
|
. . . L . . . .
|
|
*/
|
|
|
|
diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
|
|
match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
|
|
tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
|
|
if(match_count > 1){ //most common
|
|
*mx= mid_pred(A[0], B[0], C[0]);
|
|
*my= mid_pred(A[1], B[1], C[1]);
|
|
}else if(match_count==1){
|
|
if(left_ref==ref){
|
|
*mx= A[0];
|
|
*my= A[1];
|
|
}else if(top_ref==ref){
|
|
*mx= B[0];
|
|
*my= B[1];
|
|
}else{
|
|
*mx= C[0];
|
|
*my= C[1];
|
|
}
|
|
}else{
|
|
if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
|
|
*mx= A[0];
|
|
*my= A[1];
|
|
}else{
|
|
*mx= mid_pred(A[0], B[0], C[0]);
|
|
*my= mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
}
|
|
|
|
tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
|
|
}
|
|
|
|
|
|
#endif /* AVCODEC_H264_H */
|