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/*
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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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#include "rectangle.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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#ifndef CABAC
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#define CABAC h->pps.cabac
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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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/**
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 * Value of Picture.reference when Picture is not a reference picture, but
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 * is held for delayed output.
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 */
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#define DELAYED_PIC_REF 4
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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.
237
 */
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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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/**
249
 * Memory management control operation.
250
 */
251
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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/**
258
 * H264Context
259
 */
260
typedef struct H264Context{
261
    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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    /**
268
      * Used to parse AVC variant of h264
269
      */
270
    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 qp_thresh;      ///< QP threshold to skip loopfilter
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    int prev_mb_skipped;
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    int next_mb_skipped;
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281
    //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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    int top_type;
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    int left_type[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.
303
     * is 64 if not available.
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     */
305
    DECLARE_ALIGNED_8(uint8_t, non_zero_count_cache)[6*8];
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    /*
308
    .UU.YYYY
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    .UU.YYYY
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    .vv.YYYY
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    .VV.YYYY
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    */
313
    uint8_t (*non_zero_count)[32];
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    /**
316
     * Motion vector cache.
317
     */
318
    DECLARE_ALIGNED_16(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.
325
     */
326
    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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    /**
361
     * current pps
362
     */
363
    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;
373
    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;
380
    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
386
    int poc_lsb;
387
    int poc_msb;
388
    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
392
    int prev_poc_lsb;             ///< poc_lsb of the last reference pic for POC type 0
393
    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
396

    
397
    /**
398
     * frame_num for frames or 2*frame_num+1 for field pics.
399
     */
400
    int curr_pic_num;
401

    
402
    /**
403
     * max_frame_num or 2*max_frame_num for field pics.
404
     */
405
    int max_pic_num;
406

    
407
    //Weighted pred stuff
408
    int use_weight;
409
    int use_weight_chroma;
410
    int luma_log2_weight_denom;
411
    int chroma_log2_weight_denom;
412
    int luma_weight[2][48];
413
    int luma_offset[2][48];
414
    int chroma_weight[2][48][2];
415
    int chroma_offset[2][48][2];
416
    int implicit_weight[48][48];
417

    
418
    //deblock
419
    int deblocking_filter;         ///< disable_deblocking_filter_idc with 1<->0
420
    int slice_alpha_c0_offset;
421
    int slice_beta_offset;
422

    
423
    int redundant_pic_count;
424

    
425
    int direct_spatial_mv_pred;
426
    int dist_scale_factor[16];
427
    int dist_scale_factor_field[2][32];
428
    int map_col_to_list0[2][16+32];
429
    int map_col_to_list0_field[2][2][16+32];
430

    
431
    /**
432
     * num_ref_idx_l0/1_active_minus1 + 1
433
     */
434
    unsigned int ref_count[2];   ///< counts frames or fields, depending on current mb mode
435
    unsigned int list_count;
436
    uint8_t *list_counts;            ///< Array of list_count per MB specifying the slice type
437
    Picture *short_ref[32];
438
    Picture *long_ref[32];
439
    Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
440
    Picture ref_list[2][48];         /**< 0..15: frame refs, 16..47: mbaff field refs.
441
                                          Reordered version of default_ref_list
442
                                          according to picture reordering in slice header */
443
    int ref2frm[MAX_SLICES][2][64];  ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
444
    Picture *delayed_pic[MAX_DELAYED_PIC_COUNT+2]; //FIXME size?
445
    int outputed_poc;
446

    
447
    /**
448
     * memory management control operations buffer.
449
     */
450
    MMCO mmco[MAX_MMCO_COUNT];
451
    int mmco_index;
452

    
453
    int long_ref_count;  ///< number of actual long term references
454
    int short_ref_count; ///< number of actual short term references
455

    
456
    //data partitioning
457
    GetBitContext intra_gb;
458
    GetBitContext inter_gb;
459
    GetBitContext *intra_gb_ptr;
460
    GetBitContext *inter_gb_ptr;
461

    
462
    DECLARE_ALIGNED_16(DCTELEM, mb)[16*24];
463
    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
464

    
465
    /**
466
     * Cabac
467
     */
468
    CABACContext cabac;
469
    uint8_t      cabac_state[460];
470
    int          cabac_init_idc;
471

    
472
    /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
473
    uint16_t     *cbp_table;
474
    int cbp;
475
    int top_cbp;
476
    int left_cbp;
477
    /* chroma_pred_mode for i4x4 or i16x16, else 0 */
478
    uint8_t     *chroma_pred_mode_table;
479
    int         last_qscale_diff;
480
    int16_t     (*mvd_table[2])[2];
481
    DECLARE_ALIGNED_16(int16_t, mvd_cache)[2][5*8][2];
482
    uint8_t     *direct_table;
483
    uint8_t     direct_cache[5*8];
484

    
485
    uint8_t zigzag_scan[16];
486
    uint8_t zigzag_scan8x8[64];
487
    uint8_t zigzag_scan8x8_cavlc[64];
488
    uint8_t field_scan[16];
489
    uint8_t field_scan8x8[64];
490
    uint8_t field_scan8x8_cavlc[64];
491
    const uint8_t *zigzag_scan_q0;
492
    const uint8_t *zigzag_scan8x8_q0;
493
    const uint8_t *zigzag_scan8x8_cavlc_q0;
494
    const uint8_t *field_scan_q0;
495
    const uint8_t *field_scan8x8_q0;
496
    const uint8_t *field_scan8x8_cavlc_q0;
497

    
498
    int x264_build;
499

    
500
    /**
501
     * @defgroup multithreading Members for slice based multithreading
502
     * @{
503
     */
504
    struct H264Context *thread_context[MAX_THREADS];
505

    
506
    /**
507
     * current slice number, used to initalize slice_num of each thread/context
508
     */
509
    int current_slice;
510

    
511
    /**
512
     * Max number of threads / contexts.
513
     * This is equal to AVCodecContext.thread_count unless
514
     * multithreaded decoding is impossible, in which case it is
515
     * reduced to 1.
516
     */
517
    int max_contexts;
518

    
519
    /**
520
     *  1 if the single thread fallback warning has already been
521
     *  displayed, 0 otherwise.
522
     */
523
    int single_decode_warning;
524

    
525
    int last_slice_type;
526
    /** @} */
527

    
528
    int mb_xy;
529

    
530
    uint32_t svq3_watermark_key;
531

    
532
    /**
533
     * pic_struct in picture timing SEI message
534
     */
535
    SEI_PicStructType sei_pic_struct;
536

    
537
    /**
538
     * Complement sei_pic_struct
539
     * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
540
     * However, soft telecined frames may have these values.
541
     * This is used in an attempt to flag soft telecine progressive.
542
     */
543
    int prev_interlaced_frame;
544

    
545
    /**
546
     * Bit set of clock types for fields/frames in picture timing SEI message.
547
     * For each found ct_type, appropriate bit is set (e.g., bit 1 for
548
     * interlaced).
549
     */
550
    int sei_ct_type;
551

    
552
    /**
553
     * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
554
     */
555
    int sei_dpb_output_delay;
556

    
557
    /**
558
     * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
559
     */
560
    int sei_cpb_removal_delay;
561

    
562
    /**
563
     * recovery_frame_cnt from SEI message
564
     *
565
     * Set to -1 if no recovery point SEI message found or to number of frames
566
     * before playback synchronizes. Frames having recovery point are key
567
     * frames.
568
     */
569
    int sei_recovery_frame_cnt;
570

    
571
    int is_complex;
572

    
573
    int luma_weight_flag[2];   ///< 7.4.3.2 luma_weight_lX_flag
574
    int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
575

    
576
    // Timestamp stuff
577
    int sei_buffering_period_present;  ///< Buffering period SEI flag
578
    int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
579
}H264Context;
580

    
581

    
582
extern const uint8_t ff_h264_chroma_qp[52];
583

    
584

    
585
/**
586
 * Decode SEI
587
 */
588
int ff_h264_decode_sei(H264Context *h);
589

    
590
/**
591
 * Decode SPS
592
 */
593
int ff_h264_decode_seq_parameter_set(H264Context *h);
594

    
595
/**
596
 * Decode PPS
597
 */
598
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
599

    
600
/**
601
 * Decodes a network abstraction layer unit.
602
 * @param consumed is the number of bytes used as input
603
 * @param length is the length of the array
604
 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
605
 * @returns decoded bytes, might be src+1 if no escapes
606
 */
607
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length);
608

    
609
/**
610
 * identifies the exact end of the bitstream
611
 * @return the length of the trailing, or 0 if damaged
612
 */
613
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src);
614

    
615
/**
616
 * frees any data that may have been allocated in the H264 context like SPS, PPS etc.
617
 */
618
av_cold void ff_h264_free_context(H264Context *h);
619

    
620
/**
621
 * reconstructs bitstream slice_type.
622
 */
623
int ff_h264_get_slice_type(const H264Context *h);
624

    
625
/**
626
 * allocates tables.
627
 * needs width/height
628
 */
629
int ff_h264_alloc_tables(H264Context *h);
630

    
631
/**
632
 * fills the default_ref_list.
633
 */
634
int ff_h264_fill_default_ref_list(H264Context *h);
635

    
636
int ff_h264_decode_ref_pic_list_reordering(H264Context *h);
637
void ff_h264_fill_mbaff_ref_list(H264Context *h);
638
void ff_h264_remove_all_refs(H264Context *h);
639

    
640
/**
641
 * Executes the reference picture marking (memory management control operations).
642
 */
643
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
644

    
645
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb);
646

    
647

    
648
/**
649
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
650
 */
651
int ff_h264_check_intra4x4_pred_mode(H264Context *h);
652

    
653
/**
654
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
655
 */
656
int ff_h264_check_intra_pred_mode(H264Context *h, int mode);
657

    
658
void ff_h264_write_back_intra_pred_mode(H264Context *h);
659
void ff_h264_hl_decode_mb(H264Context *h);
660
int ff_h264_frame_start(H264Context *h);
661
av_cold int ff_h264_decode_init(AVCodecContext *avctx);
662
av_cold int ff_h264_decode_end(AVCodecContext *avctx);
663
av_cold void ff_h264_decode_init_vlc(void);
664

    
665
/**
666
 * decodes a macroblock
667
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
668
 */
669
int ff_h264_decode_mb_cavlc(H264Context *h);
670

    
671
/**
672
 * decodes a CABAC coded macroblock
673
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
674
 */
675
int ff_h264_decode_mb_cabac(H264Context *h);
676

    
677
void ff_h264_init_cabac_states(H264Context *h);
678

    
679
void ff_h264_direct_dist_scale_factor(H264Context * const h);
680
void ff_h264_direct_ref_list_init(H264Context * const h);
681
void ff_h264_pred_direct_motion(H264Context * const h, int *mb_type);
682

    
683
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);
684
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);
685

    
686
/**
687
 * Reset SEI values at the beginning of the frame.
688
 *
689
 * @param h H.264 context.
690
 */
691
void ff_h264_reset_sei(H264Context *h);
692

    
693

    
694
/*
695
o-o o-o
696
 / / /
697
o-o o-o
698
 ,---'
699
o-o o-o
700
 / / /
701
o-o o-o
702
*/
703
//This table must be here because scan8[constant] must be known at compiletime
704
static const uint8_t scan8[16 + 2*4]={
705
 4+1*8, 5+1*8, 4+2*8, 5+2*8,
706
 6+1*8, 7+1*8, 6+2*8, 7+2*8,
707
 4+3*8, 5+3*8, 4+4*8, 5+4*8,
708
 6+3*8, 7+3*8, 6+4*8, 7+4*8,
709
 1+1*8, 2+1*8,
710
 1+2*8, 2+2*8,
711
 1+4*8, 2+4*8,
712
 1+5*8, 2+5*8,
713
};
714

    
715
static av_always_inline uint32_t pack16to32(int a, int b){
716
#if HAVE_BIGENDIAN
717
   return (b&0xFFFF) + (a<<16);
718
#else
719
   return (a&0xFFFF) + (b<<16);
720
#endif
721
}
722

    
723
/**
724
 * gets the chroma qp.
725
 */
726
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
727
    return h->pps.chroma_qp_table[t][qscale];
728
}
729

    
730
static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my);
731

    
732
static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deblock){
733
    MpegEncContext * const s = &h->s;
734
    const int mb_xy= h->mb_xy;
735
    int topleft_xy, top_xy, topright_xy, left_xy[2];
736
    int topleft_type, top_type, topright_type, left_type[2];
737
    const uint8_t * left_block;
738
    int topleft_partition= -1;
739
    int i;
740
    static const uint8_t left_block_options[4][16]={
741
        {0,1,2,3,7,10,8,11,7+0*8, 7+1*8, 7+2*8, 7+3*8, 2+0*8, 2+3*8, 2+1*8, 2+2*8},
742
        {2,2,3,3,8,11,8,11,7+2*8, 7+2*8, 7+3*8, 7+3*8, 2+1*8, 2+2*8, 2+1*8, 2+2*8},
743
        {0,0,1,1,7,10,7,10,7+0*8, 7+0*8, 7+1*8, 7+1*8, 2+0*8, 2+3*8, 2+0*8, 2+3*8},
744
        {0,2,0,2,7,10,7,10,7+0*8, 7+2*8, 7+0*8, 7+2*8, 2+0*8, 2+3*8, 2+0*8, 2+3*8}
745
    };
746

    
747
    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
748

    
749
    //FIXME deblocking could skip the intra and nnz parts.
750
//     if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
751
//         return;
752

    
753
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
754
     * stuff, I can't imagine that these complex rules are worth it. */
755

    
756
    topleft_xy = top_xy - 1;
757
    topright_xy= top_xy + 1;
758
    left_xy[1] = left_xy[0] = mb_xy-1;
759
    left_block = left_block_options[0];
760
    if(FRAME_MBAFF){
761
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
762
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
763
        if(s->mb_y&1){
764
            if (left_mb_field_flag != curr_mb_field_flag) {
765
                if(for_deblock){
766
                    left_xy[0] = mb_xy - s->mb_stride - 1;
767
                    left_xy[1] = mb_xy                - 1;
768
                }else{
769
                left_xy[1] = left_xy[0] = mb_xy - s->mb_stride - 1;
770
                if (curr_mb_field_flag) {
771
                    left_xy[1] += s->mb_stride;
772
                    left_block = left_block_options[3];
773
                } else {
774
                    topleft_xy += s->mb_stride;
775
                    // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
776
                    topleft_partition = 0;
777
                    left_block = left_block_options[1];
778
                }
779
                }
780
            }
781
        }else{
782
            if(curr_mb_field_flag){
783
                topleft_xy  += s->mb_stride & (((s->current_picture.mb_type[top_xy - 1]>>7)&1)-1);
784
                topright_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy + 1]>>7)&1)-1);
785
                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
786
            }
787
            if (left_mb_field_flag != curr_mb_field_flag) {
788
                if(for_deblock){
789
                    left_xy[0] = mb_xy                - 1;
790
                    left_xy[1] = mb_xy + s->mb_stride - 1;
791
                }else{
792
                left_xy[1] = left_xy[0] = mb_xy - 1;
793
                if (curr_mb_field_flag) {
794
                    left_xy[1] += s->mb_stride;
795
                    left_block = left_block_options[3];
796
                } else {
797
                    left_block = left_block_options[2];
798
                }
799
                }
800
            }
801
        }
802
    }
803

    
804
    h->top_mb_xy = top_xy;
805
    h->left_mb_xy[0] = left_xy[0];
806
    h->left_mb_xy[1] = left_xy[1];
807
    if(for_deblock){
808

    
809
        //for sufficiently low qp, filtering wouldn't do anything
810
        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
811
        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
812
        int qp = s->current_picture.qscale_table[mb_xy];
813
        if(qp <= qp_thresh
814
           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
815
           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
816
            if(!FRAME_MBAFF)
817
                return 1;
818
            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[0]+s->mb_stride] + 1)>>1) <= qp_thresh)
819
               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
820
                return 1;
821
        }
822

    
823
        if(h->deblocking_filter == 2){
824
            h->top_type    = top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
825
            h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
826
            h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
827
        }else{
828
            h->top_type    = top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
829
            h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
830
            h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
831
        }
832
        if(IS_INTRA(mb_type))
833
            return 0;
834

    
835
        AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
836
        AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
837
        *((uint32_t*)&h->non_zero_count_cache[0+8*5])= *((uint32_t*)&h->non_zero_count[mb_xy][16]);
838
        *((uint32_t*)&h->non_zero_count_cache[4+8*3])= *((uint32_t*)&h->non_zero_count[mb_xy][20]);
839
        AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
840

    
841
        h->cbp= h->cbp_table[mb_xy];
842

    
843
        {
844
            int list;
845
            for(list=0; list<h->list_count; list++){
846
                int8_t *ref;
847
                int y, b_stride;
848
                int16_t (*mv_dst)[2];
849
                int16_t (*mv_src)[2];
850

    
851
                if(!USES_LIST(mb_type, list)){
852
                    fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
853
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
854
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] =
855
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
856
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = ((LIST_NOT_USED)&0xFF)*0x01010101;
857
                    continue;
858
                }
859

    
860
                ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
861
                {
862
                    int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
863
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
864
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
865
                    ref += h->b8_stride;
866
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
867
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
868
                }
869

    
870
                b_stride = h->b_stride;
871
                mv_dst   = &h->mv_cache[list][scan8[0]];
872
                mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
873
                for(y=0; y<4; y++){
874
                    AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
875
                }
876

    
877
            }
878
        }
879
    }else{
880
        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
881
        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
882
        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
883
        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
884
        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
885

    
886
        if(IS_INTRA(mb_type)){
887
            int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
888
            h->topleft_samples_available=
889
            h->top_samples_available=
890
            h->left_samples_available= 0xFFFF;
891
            h->topright_samples_available= 0xEEEA;
892

    
893
            if(!(top_type & type_mask)){
894
                h->topleft_samples_available= 0xB3FF;
895
                h->top_samples_available= 0x33FF;
896
                h->topright_samples_available= 0x26EA;
897
            }
898
            if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
899
                if(IS_INTERLACED(mb_type)){
900
                    if(!(left_type[0] & type_mask)){
901
                        h->topleft_samples_available&= 0xDFFF;
902
                        h->left_samples_available&= 0x5FFF;
903
                    }
904
                    if(!(left_type[1] & type_mask)){
905
                        h->topleft_samples_available&= 0xFF5F;
906
                        h->left_samples_available&= 0xFF5F;
907
                    }
908
                }else{
909
                    int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
910
                                    ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
911
                    assert(left_xy[0] == left_xy[1]);
912
                    if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
913
                        h->topleft_samples_available&= 0xDF5F;
914
                        h->left_samples_available&= 0x5F5F;
915
                    }
916
                }
917
            }else{
918
                if(!(left_type[0] & type_mask)){
919
                    h->topleft_samples_available&= 0xDF5F;
920
                    h->left_samples_available&= 0x5F5F;
921
                }
922
            }
923

    
924
            if(!(topleft_type & type_mask))
925
                h->topleft_samples_available&= 0x7FFF;
926

    
927
            if(!(topright_type & type_mask))
928
                h->topright_samples_available&= 0xFBFF;
929

    
930
            if(IS_INTRA4x4(mb_type)){
931
                if(IS_INTRA4x4(top_type)){
932
                    h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
933
                    h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
934
                    h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
935
                    h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
936
                }else{
937
                    int pred;
938
                    if(!(top_type & type_mask))
939
                        pred= -1;
940
                    else{
941
                        pred= 2;
942
                    }
943
                    h->intra4x4_pred_mode_cache[4+8*0]=
944
                    h->intra4x4_pred_mode_cache[5+8*0]=
945
                    h->intra4x4_pred_mode_cache[6+8*0]=
946
                    h->intra4x4_pred_mode_cache[7+8*0]= pred;
947
                }
948
                for(i=0; i<2; i++){
949
                    if(IS_INTRA4x4(left_type[i])){
950
                        h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
951
                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
952
                    }else{
953
                        int pred;
954
                        if(!(left_type[i] & type_mask))
955
                            pred= -1;
956
                        else{
957
                            pred= 2;
958
                        }
959
                        h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
960
                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
961
                    }
962
                }
963
            }
964
        }
965
    }
966

    
967

    
968
/*
969
0 . T T. T T T T
970
1 L . .L . . . .
971
2 L . .L . . . .
972
3 . T TL . . . .
973
4 L . .L . . . .
974
5 L . .. . . . .
975
*/
976
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
977
    if(top_type){
978
        *(uint32_t*)&h->non_zero_count_cache[4+8*0]= *(uint32_t*)&h->non_zero_count[top_xy][4+3*8];
979
        if(!for_deblock){
980
            h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][1+1*8];
981
            h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][2+1*8];
982

    
983
            h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][1+2*8];
984
            h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][2+2*8];
985
        }
986
    }else if(!for_deblock){
987
            h->non_zero_count_cache[1+8*0]=
988
            h->non_zero_count_cache[2+8*0]=
989

    
990
            h->non_zero_count_cache[1+8*3]=
991
            h->non_zero_count_cache[2+8*3]=
992
            *(uint32_t*)&h->non_zero_count_cache[4+8*0]= CABAC && !IS_INTRA(mb_type) ? 0 : 0x40404040;
993
    }
994

    
995
    for (i=0; i<2; i++) {
996
        if(left_type[i]){
997
            h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+0+2*i]];
998
            h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+1+2*i]];
999
            if(!for_deblock){
1000
                h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+4+2*i]];
1001
                h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+5+2*i]];
1002
            }
1003
        }else if(!for_deblock){
1004
                h->non_zero_count_cache[3+8*1 + 2*8*i]=
1005
                h->non_zero_count_cache[3+8*2 + 2*8*i]=
1006
                h->non_zero_count_cache[0+8*1 +   8*i]=
1007
                h->non_zero_count_cache[0+8*4 +   8*i]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
1008
        }
1009
    }
1010

    
1011
    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
1012
    if(for_deblock && !CABAC && h->pps.transform_8x8_mode){
1013
        if(IS_8x8DCT(top_type)){
1014
            h->non_zero_count_cache[4+8*0]=
1015
            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
1016
            h->non_zero_count_cache[6+8*0]=
1017
            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
1018
        }
1019
        if(IS_8x8DCT(left_type[0])){
1020
            h->non_zero_count_cache[3+8*1]=
1021
            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
1022
        }
1023
        if(IS_8x8DCT(left_type[1])){
1024
            h->non_zero_count_cache[3+8*3]=
1025
            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
1026
        }
1027

    
1028
        if(IS_8x8DCT(mb_type)){
1029
            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
1030
            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
1031

    
1032
            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
1033
            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
1034

    
1035
            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
1036
            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
1037

    
1038
            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
1039
            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
1040
        }
1041
    }
1042

    
1043
    if( CABAC && !for_deblock) {
1044
        // top_cbp
1045
        if(top_type) {
1046
            h->top_cbp = h->cbp_table[top_xy];
1047
        } else if(IS_INTRA(mb_type)) {
1048
            h->top_cbp = 0x1C0;
1049
        } else {
1050
            h->top_cbp = 0;
1051
        }
1052
        // left_cbp
1053
        if (left_type[0]) {
1054
            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
1055
        } else if(IS_INTRA(mb_type)) {
1056
            h->left_cbp = 0x1C0;
1057
        } else {
1058
            h->left_cbp = 0;
1059
        }
1060
        if (left_type[0]) {
1061
            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
1062
        }
1063
        if (left_type[1]) {
1064
            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
1065
        }
1066
    }
1067

    
1068
#if 1
1069
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
1070
        int list;
1071
        for(list=0; list<h->list_count; list++){
1072
            if(!for_deblock && !USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){
1073
                /*if(!h->mv_cache_clean[list]){
1074
                    memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
1075
                    memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
1076
                    h->mv_cache_clean[list]= 1;
1077
                }*/
1078
                continue;
1079
            }
1080
            h->mv_cache_clean[list]= 0;
1081

    
1082
            if(USES_LIST(top_type, list)){
1083
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
1084
                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
1085
                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
1086
                if(for_deblock){
1087
                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
1088
                    h->ref_cache[list][scan8[0] + 0 - 1*8]=
1089
                    h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
1090
                    h->ref_cache[list][scan8[0] + 2 - 1*8]=
1091
                    h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
1092
                }else{
1093
                    h->ref_cache[list][scan8[0] + 0 - 1*8]=
1094
                    h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
1095
                    h->ref_cache[list][scan8[0] + 2 - 1*8]=
1096
                    h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
1097
                }
1098
            }else{
1099
                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
1100
                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= (((for_deblock||top_type) ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
1101
            }
1102

    
1103
            for(i=0; i<2; i++){
1104
                int cache_idx = scan8[0] - 1 + i*2*8;
1105
                if(USES_LIST(left_type[i], list)){
1106
                    const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
1107
                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
1108
                    *(uint32_t*)h->mv_cache[list][cache_idx  ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
1109
                    *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
1110
                    if(for_deblock){
1111
                        int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[i]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
1112
                        h->ref_cache[list][cache_idx  ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)]];
1113
                        h->ref_cache[list][cache_idx+8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)]];
1114
                    }else{
1115
                        h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
1116
                        h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
1117
                    }
1118
                }else{
1119
                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
1120
                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
1121
                    h->ref_cache[list][cache_idx  ]=
1122
                    h->ref_cache[list][cache_idx+8]= (for_deblock||left_type[i]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
1123
                }
1124
            }
1125

    
1126
            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
1127
                continue;
1128

    
1129
            if(USES_LIST(topleft_type, list)){
1130
                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
1131
                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
1132
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
1133
                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
1134
            }else{
1135
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
1136
                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
1137
            }
1138

    
1139
            if(USES_LIST(topright_type, list)){
1140
                const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
1141
                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
1142
                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
1143
                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
1144
            }else{
1145
                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
1146
                h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
1147
            }
1148

    
1149
            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
1150
                continue;
1151

    
1152
            h->ref_cache[list][scan8[5 ]+1] =
1153
            h->ref_cache[list][scan8[7 ]+1] =
1154
            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
1155
            h->ref_cache[list][scan8[4 ]] =
1156
            h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
1157
            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
1158
            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
1159
            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
1160
            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
1161
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
1162

    
1163
            if( CABAC ) {
1164
                /* XXX beurk, Load mvd */
1165
                if(USES_LIST(top_type, list)){
1166
                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
1167
                    AV_COPY128(h->mvd_cache[list][scan8[0] + 0 - 1*8], h->mvd_table[list][b_xy + 0]);
1168
                }else{
1169
                    AV_ZERO128(h->mvd_cache[list][scan8[0] + 0 - 1*8]);
1170
                }
1171
                if(USES_LIST(left_type[0], list)){
1172
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
1173
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
1174
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
1175
                }else{
1176
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
1177
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
1178
                }
1179
                if(USES_LIST(left_type[1], list)){
1180
                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
1181
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
1182
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
1183
                }else{
1184
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
1185
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
1186
                }
1187
                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
1188
                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
1189
                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
1190
                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
1191
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
1192

    
1193
                if(h->slice_type_nos == FF_B_TYPE){
1194
                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
1195

    
1196
                    if(IS_DIRECT(top_type)){
1197
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
1198
                    }else if(IS_8X8(top_type)){
1199
                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
1200
                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
1201
                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
1202
                    }else{
1203
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
1204
                    }
1205

    
1206
                    if(IS_DIRECT(left_type[0]))
1207
                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
1208
                    else if(IS_8X8(left_type[0]))
1209
                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
1210
                    else
1211
                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;
1212

    
1213
                    if(IS_DIRECT(left_type[1]))
1214
                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
1215
                    else if(IS_8X8(left_type[1]))
1216
                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
1217
                    else
1218
                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
1219
                }
1220
            }
1221

    
1222
            if(FRAME_MBAFF){
1223
#define MAP_MVS\
1224
                    MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
1225
                    MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
1226
                    MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
1227
                    MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
1228
                    MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
1229
                    MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
1230
                    MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
1231
                    MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
1232
                    MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
1233
                    MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
1234
                if(MB_FIELD){
1235
#define MAP_F2F(idx, mb_type)\
1236
                    if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
1237
                        h->ref_cache[list][idx] <<= 1;\
1238
                        h->mv_cache[list][idx][1] /= 2;\
1239
                        h->mvd_cache[list][idx][1] /= 2;\
1240
                    }
1241
                    MAP_MVS
1242
#undef MAP_F2F
1243
                }else{
1244
#define MAP_F2F(idx, mb_type)\
1245
                    if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
1246
                        h->ref_cache[list][idx] >>= 1;\
1247
                        h->mv_cache[list][idx][1] <<= 1;\
1248
                        h->mvd_cache[list][idx][1] <<= 1;\
1249
                    }
1250
                    MAP_MVS
1251
#undef MAP_F2F
1252
                }
1253
            }
1254
        }
1255
    }
1256
#endif
1257

    
1258
    if(!for_deblock)
1259
        h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
1260
    return 0;
1261
}
1262

    
1263
static void fill_decode_caches(H264Context *h, int mb_type){
1264
    fill_caches(h, mb_type, 0);
1265
}
1266

    
1267
/**
1268
 *
1269
 * @returns non zero if the loop filter can be skiped
1270
 */
1271
static int fill_filter_caches(H264Context *h, int mb_type){
1272
    return fill_caches(h, mb_type, 1);
1273
}
1274

    
1275
/**
1276
 * gets the predicted intra4x4 prediction mode.
1277
 */
1278
static inline int pred_intra_mode(H264Context *h, int n){
1279
    const int index8= scan8[n];
1280
    const int left= h->intra4x4_pred_mode_cache[index8 - 1];
1281
    const int top = h->intra4x4_pred_mode_cache[index8 - 8];
1282
    const int min= FFMIN(left, top);
1283

    
1284
    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
1285

    
1286
    if(min<0) return DC_PRED;
1287
    else      return min;
1288
}
1289

    
1290
static inline void write_back_non_zero_count(H264Context *h){
1291
    const int mb_xy= h->mb_xy;
1292

    
1293
    AV_COPY64(&h->non_zero_count[mb_xy][ 0], &h->non_zero_count_cache[0+8*1]);
1294
    AV_COPY64(&h->non_zero_count[mb_xy][ 8], &h->non_zero_count_cache[0+8*2]);
1295
    *((uint32_t*)&h->non_zero_count[mb_xy][16]) = *((uint32_t*)&h->non_zero_count_cache[0+8*5]);
1296
    *((uint32_t*)&h->non_zero_count[mb_xy][20]) = *((uint32_t*)&h->non_zero_count_cache[4+8*3]);
1297
    AV_COPY64(&h->non_zero_count[mb_xy][24], &h->non_zero_count_cache[0+8*4]);
1298
}
1299

    
1300
static inline void write_back_motion(H264Context *h, int mb_type){
1301
    MpegEncContext * const s = &h->s;
1302
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1303
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1304
    int list;
1305

    
1306
    if(!USES_LIST(mb_type, 0))
1307
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1308

    
1309
    for(list=0; list<h->list_count; list++){
1310
        int y, b_stride;
1311
        int16_t (*mv_dst)[2];
1312
        int16_t (*mv_src)[2];
1313

    
1314
        if(!USES_LIST(mb_type, list))
1315
            continue;
1316

    
1317
        b_stride = h->b_stride;
1318
        mv_dst   = &s->current_picture.motion_val[list][b_xy];
1319
        mv_src   = &h->mv_cache[list][scan8[0]];
1320
        for(y=0; y<4; y++){
1321
            AV_COPY128(mv_dst + y*b_stride, mv_src + 8*y);
1322
        }
1323
        if( CABAC ) {
1324
            int16_t (*mvd_dst)[2] = &h->mvd_table[list][b_xy];
1325
            int16_t (*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
1326
            if(IS_SKIP(mb_type))
1327
                fill_rectangle(mvd_dst, 4, 4, h->b_stride, 0, 4);
1328
            else
1329
            for(y=0; y<4; y++){
1330
                AV_COPY128(mvd_dst + y*b_stride, mvd_src + 8*y);
1331
            }
1332
        }
1333

    
1334
        {
1335
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1336
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1337
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1338
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1339
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1340
        }
1341
    }
1342

    
1343
    if(h->slice_type_nos == FF_B_TYPE && CABAC){
1344
        if(IS_8X8(mb_type)){
1345
            uint8_t *direct_table = &h->direct_table[b8_xy];
1346
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1347
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1348
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1349
        }
1350
    }
1351
}
1352

    
1353
static inline int get_dct8x8_allowed(H264Context *h){
1354
    if(h->sps.direct_8x8_inference_flag)
1355
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8                )*0x0001000100010001ULL));
1356
    else
1357
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
1358
}
1359

    
1360
static void predict_field_decoding_flag(H264Context *h){
1361
    MpegEncContext * const s = &h->s;
1362
    const int mb_xy= h->mb_xy;
1363
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
1364
                ? s->current_picture.mb_type[mb_xy-1]
1365
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
1366
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
1367
                : 0;
1368
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
1369
}
1370

    
1371
/**
1372
 * decodes a P_SKIP or B_SKIP macroblock
1373
 */
1374
static void decode_mb_skip(H264Context *h){
1375
    MpegEncContext * const s = &h->s;
1376
    const int mb_xy= h->mb_xy;
1377
    int mb_type=0;
1378

    
1379
    memset(h->non_zero_count[mb_xy], 0, 32);
1380
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
1381

    
1382
    if(MB_FIELD)
1383
        mb_type|= MB_TYPE_INTERLACED;
1384

    
1385
    if( h->slice_type_nos == FF_B_TYPE )
1386
    {
1387
        // just for fill_caches. pred_direct_motion will set the real mb_type
1388
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
1389

    
1390
        fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
1391
        ff_h264_pred_direct_motion(h, &mb_type);
1392
        mb_type|= MB_TYPE_SKIP;
1393
    }
1394
    else
1395
    {
1396
        int mx, my;
1397
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
1398

    
1399
        fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
1400
        pred_pskip_motion(h, &mx, &my);
1401
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
1402
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
1403
    }
1404

    
1405
    write_back_motion(h, mb_type);
1406
    s->current_picture.mb_type[mb_xy]= mb_type;
1407
    s->current_picture.qscale_table[mb_xy]= s->qscale;
1408
    h->slice_table[ mb_xy ]= h->slice_num;
1409
    h->prev_mb_skipped= 1;
1410
}
1411

    
1412
#include "h264_mvpred.h" //For pred_pskip_motion()
1413

    
1414
#endif /* AVCODEC_H264_H */