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/*
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 * Generic DCT based hybrid video encoder
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 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
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 * Copyright (c) 2002-2004 Michael Niedermayer
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 *
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 * This library 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 of the License, or (at your option) any later version.
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 *
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 * This library 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 this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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/**
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 * @file mpegvideo.h
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 * mpegvideo header.
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 */
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#ifndef AVCODEC_MPEGVIDEO_H
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#define AVCODEC_MPEGVIDEO_H
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#include "dsputil.h"
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#define FRAME_SKIPED 100 ///< return value for header parsers if frame is not coded
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enum OutputFormat {
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    FMT_MPEG1,
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    FMT_H261,
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    FMT_H263,
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    FMT_MJPEG, 
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    FMT_H264,
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};
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#define EDGE_WIDTH 16
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#define MPEG_BUF_SIZE (16 * 1024)
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#define QMAT_SHIFT_MMX 16
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#define QMAT_SHIFT 22
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#define MAX_FCODE 7
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#define MAX_MV 2048
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#define MAX_THREADS 8
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#define MAX_PICTURE_COUNT 32
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#define ME_MAP_SIZE 64
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#define ME_MAP_SHIFT 3
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#define ME_MAP_MV_BITS 11
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/* run length table */
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#define MAX_RUN    64
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#define MAX_LEVEL  64
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#define I_TYPE FF_I_TYPE  ///< Intra
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#define P_TYPE FF_P_TYPE  ///< Predicted
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#define B_TYPE FF_B_TYPE  ///< Bi-dir predicted
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#define S_TYPE FF_S_TYPE  ///< S(GMC)-VOP MPEG4
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#define SI_TYPE FF_SI_TYPE  ///< Switching Intra
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#define SP_TYPE FF_SP_TYPE  ///< Switching Predicted
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typedef struct Predictor{
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    double coeff;
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    double count;
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    double decay;
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} Predictor;
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typedef struct RateControlEntry{
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    int pict_type;
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    float qscale;
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    int mv_bits;
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    int i_tex_bits;
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    int p_tex_bits;
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    int misc_bits;
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    uint64_t expected_bits;
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    int new_pict_type;
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    float new_qscale;
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    int mc_mb_var_sum;
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    int mb_var_sum;
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    int i_count;
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    int f_code;
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    int b_code;
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}RateControlEntry;
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/**
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 * rate control context.
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 */
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typedef struct RateControlContext{
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    FILE *stats_file;
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    int num_entries;              ///< number of RateControlEntries 
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    RateControlEntry *entry;
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    double buffer_index;          ///< amount of bits in the video/audio buffer 
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    Predictor pred[5];
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    double short_term_qsum;       ///< sum of recent qscales 
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    double short_term_qcount;     ///< count of recent qscales 
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    double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization  
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    double pass1_wanted_bits;     ///< bits which should have been outputed by the pass1 code (including complexity init) 
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    double last_qscale;
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    double last_qscale_for[5];    ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff 
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    int last_mc_mb_var_sum;
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    int last_mb_var_sum;
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    uint64_t i_cplx_sum[5];
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    uint64_t p_cplx_sum[5];
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    uint64_t mv_bits_sum[5];
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    uint64_t qscale_sum[5];
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    int frame_count[5];
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    int last_non_b_pict_type;
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}RateControlContext;
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/**
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 * Scantable.
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 */
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typedef struct ScanTable{
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    const uint8_t *scantable;
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    uint8_t permutated[64];
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    uint8_t raster_end[64];
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#ifdef ARCH_POWERPC
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                /** Used by dct_quantise_alitvec to find last-non-zero */
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    uint8_t __align8 inverse[64];
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#endif
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} ScanTable;
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/**
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 * Picture.
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 */
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typedef struct Picture{
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    FF_COMMON_FRAME
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    /**
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     * halfpel luma planes.
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     */
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    uint8_t *interpolated[3];
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    int16_t (*motion_val_base[2])[2];
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    uint32_t *mb_type_base;
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#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
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#define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
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#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
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#define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
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#define IS_INTRA(a)      ((a)&7)
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#define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
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#define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
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#define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
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#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
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#define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
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#define IS_GMC(a)        ((a)&MB_TYPE_GMC)
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#define IS_16X16(a)      ((a)&MB_TYPE_16x16)
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#define IS_16X8(a)       ((a)&MB_TYPE_16x8)
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#define IS_8X16(a)       ((a)&MB_TYPE_8x16)
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#define IS_8X8(a)        ((a)&MB_TYPE_8x8)
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#define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
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#define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
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#define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
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#define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
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#define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
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#define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
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#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
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#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
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#define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
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    int field_poc[2];           ///< h264 top/bottom POC
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    int poc;                    ///< h264 frame POC
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    int frame_num;              ///< h264 frame_num
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    int pic_id;                 ///< h264 pic_num or long_term_pic_idx
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    int long_ref;               ///< 1->long term reference 0->short term reference
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    int mb_var_sum;             ///< sum of MB variance for current frame 
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    int mc_mb_var_sum;          ///< motion compensated MB variance for current frame 
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    uint16_t *mb_var;           ///< Table for MB variances 
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    uint16_t *mc_mb_var;        ///< Table for motion compensated MB variances 
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    uint8_t *mb_mean;           ///< Table for MB luminance 
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    int32_t *mb_cmp_score;        ///< Table for MB cmp scores, for mb decission FIXME remove
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    int b_frame_score;          /* */
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} Picture;
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typedef struct ParseContext{
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    uint8_t *buffer;
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    int index;
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    int last_index;
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    int buffer_size;
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    uint32_t state;             ///< contains the last few bytes in MSB order
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    int frame_start_found;
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    int overread;               ///< the number of bytes which where irreversibly read from the next frame
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    int overread_index;         ///< the index into ParseContext.buffer of the overreaded bytes
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} ParseContext;
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struct MpegEncContext;
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/**
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 * Motion estimation context.
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 */
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typedef struct MotionEstContext{
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    AVCodecContext *avctx;
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    int skip;                          ///< set if ME is skiped for the current MB 
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    int co_located_mv[4][2];           ///< mv from last p frame for direct mode ME 
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    int direct_basis_mv[4][2];
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    uint8_t *scratchpad;               ///< data area for the me algo, so that the ME doesnt need to malloc/free 
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    uint8_t *best_mb;
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    uint8_t *temp_mb[2];
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    uint8_t *temp;
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    int best_bits;
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    uint32_t *map;                     ///< map to avoid duplicate evaluations 
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    uint32_t *score_map;               ///< map to store the scores 
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    int map_generation;  
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    int pre_penalty_factor;
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    int penalty_factor;
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    int sub_penalty_factor;
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    int mb_penalty_factor;
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    int flags;
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    int sub_flags;
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    int mb_flags;
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    int pre_pass;                      ///< = 1 for the pre pass 
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    int dia_size;
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    int xmin;
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    int xmax;
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    int ymin;
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    int ymax;
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    int pred_x;
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    int pred_y;
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    uint8_t *src[4][4];
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    uint8_t *ref[4][4];
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    int stride;
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    int uvstride;
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    /* temp variables for picture complexity calculation */
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    int mc_mb_var_sum_temp;
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    int mb_var_sum_temp;
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    int scene_change_score;
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/*    cmp, chroma_cmp;*/
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    op_pixels_func (*hpel_put)[4];
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    op_pixels_func (*hpel_avg)[4];
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    qpel_mc_func (*qpel_put)[16];
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    qpel_mc_func (*qpel_avg)[16];
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    uint8_t (*mv_penalty)[MAX_MV*2+1];  ///< amount of bits needed to encode a MV 
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    uint8_t *current_mv_penalty;
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    int (*sub_motion_search)(struct MpegEncContext * s,
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                                  int *mx_ptr, int *my_ptr, int dmin,
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                                  int src_index, int ref_index,
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                                  int size, int h);
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}MotionEstContext;
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/**
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 * MpegEncContext.
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 */
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typedef struct MpegEncContext {
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    struct AVCodecContext *avctx;
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    /* the following parameters must be initialized before encoding */
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    int width, height;///< picture size. must be a multiple of 16 
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    int gop_size;
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    int intra_only;   ///< if true, only intra pictures are generated 
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    int bit_rate;     ///< wanted bit rate 
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    enum OutputFormat out_format; ///< output format 
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    int h263_pred;    ///< use mpeg4/h263 ac/dc predictions 
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/* the following codec id fields are deprecated in favor of codec_id */
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    int h263_plus;    ///< h263 plus headers 
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    int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
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    int h263_flv;     ///< use flv h263 header 
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    enum CodecID codec_id;     /* see CODEC_ID_xxx */
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    int fixed_qscale; ///< fixed qscale if non zero 
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    int encoding;     ///< true if we are encoding (vs decoding) 
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    int flags;        ///< AVCodecContext.flags (HQ, MV4, ...) 
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    int flags2;       ///< AVCodecContext.flags2
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    int max_b_frames; ///< max number of b-frames for encoding 
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    int luma_elim_threshold;
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    int chroma_elim_threshold;
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    int strict_std_compliance; ///< strictly follow the std (MPEG4, ...) 
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    int workaround_bugs;       ///< workaround bugs in encoders which cannot be detected automatically 
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    /* the following fields are managed internally by the encoder */
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    /** bit output */
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    PutBitContext pb;
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    /* sequence parameters */
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    int context_initialized;
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    int input_picture_number;  ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
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    int coded_picture_number;  ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
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    int picture_number;       //FIXME remove, unclear definition
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    int picture_in_gop_number; ///< 0-> first pic in gop, ... 
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    int b_frames_since_non_b;  ///< used for encoding, relative to not yet reordered input 
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    int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
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    int mb_width, mb_height;   ///< number of MBs horizontally & vertically 
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    int mb_stride;             ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
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    int b8_stride;             ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressng
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    int b4_stride;             ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressng
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    int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
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    int mb_num;                ///< number of MBs of a picture 
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    int linesize;              ///< line size, in bytes, may be different from width 
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    int uvlinesize;            ///< line size, for chroma in bytes, may be different from width 
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    Picture *picture;          ///< main picture buffer 
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    Picture **input_picture;   ///< next pictures on display order for encoding
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    Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
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    int start_mb_y;            ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
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    int end_mb_y;              ///< end   mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
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    struct MpegEncContext *thread_context[MAX_THREADS];
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    /** 
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     * copy of the previous picture structure.
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     * note, linesize & data, might not match the previous picture (for field pictures)
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     */
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    Picture last_picture;       
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    /** 
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     * copy of the next picture structure.
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     * note, linesize & data, might not match the next picture (for field pictures)
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     */
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    Picture next_picture;
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    /** 
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     * copy of the source picture structure for encoding.
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     * note, linesize & data, might not match the source picture (for field pictures)
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     */
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    Picture new_picture;
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    /** 
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     * copy of the current picture structure.
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     * note, linesize & data, might not match the current picture (for field pictures)
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     */
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    Picture current_picture;    ///< buffer to store the decompressed current picture 
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    Picture *last_picture_ptr;     ///< pointer to the previous picture.
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    Picture *next_picture_ptr;     ///< pointer to the next picture (for bidir pred) 
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    Picture *current_picture_ptr;  ///< pointer to the current picture
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    uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
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    int last_dc[3];                ///< last DC values for MPEG1 
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    int16_t *dc_val_base;
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    int16_t *dc_val[3];            ///< used for mpeg4 DC prediction, all 3 arrays must be continuous 
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    int16_t dc_cache[4*5];
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    int y_dc_scale, c_dc_scale;
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    uint8_t *y_dc_scale_table;     ///< qscale -> y_dc_scale table 
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    uint8_t *c_dc_scale_table;     ///< qscale -> c_dc_scale table 
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    const uint8_t *chroma_qscale_table;  ///< qscale -> chroma_qscale (h263)
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    uint8_t *coded_block_base;
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    uint8_t *coded_block;          ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
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    int16_t (*ac_val_base)[16];
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    int16_t (*ac_val[3])[16];      ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous 
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    int ac_pred;
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    uint8_t *prev_pict_types;     ///< previous picture types in bitstream order, used for mb skip 
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#define PREV_PICT_TYPES_BUFFER_SIZE 256
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    int mb_skiped;                ///< MUST BE SET only during DECODING 
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    uint8_t *mbskip_table;        /**< used to avoid copy if macroblock skipped (for black regions for example) 
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                                   and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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    uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding 
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    uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding 
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    uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding 
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    uint8_t *allocated_edge_emu_buffer;
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    uint8_t *edge_emu_buffer;     ///< points into the middle of allocated_edge_emu_buffer
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    uint8_t *rd_scratchpad;       ///< scartchpad for rate distortion mb decission
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    uint8_t *obmc_scratchpad;
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    uint8_t *b_scratchpad;        ///< scratchpad used for writing into write only buffers
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    int qscale;                 ///< QP 
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    int chroma_qscale;          ///< chroma QP 
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    int lambda;                 ///< lagrange multipler used in rate distortion
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    int lambda2;                ///< (lambda*lambda) >> FF_LAMBDA_SHIFT 
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    int *lambda_table;
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    int adaptive_quant;         ///< use adaptive quantization 
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    int dquant;                 ///< qscale difference to prev qscale  
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    int pict_type;              ///< I_TYPE, P_TYPE, B_TYPE, ... 
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    int last_pict_type; //FIXME removes
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    int last_non_b_pict_type;   ///< used for mpeg4 gmc b-frames & ratecontrol 
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    int dropable;
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    int frame_rate_index;
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    /* motion compensation */
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    int unrestricted_mv;        ///< mv can point outside of the coded picture 
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    int h263_long_vectors;      ///< use horrible h263v1 long vector mode 
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    int decode;                 ///< if 0 then decoding will be skiped (for encoding b frames for example)
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    DSPContext dsp;             ///< pointers for accelerated dsp fucntions 
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    int f_code;                 ///< forward MV resolution 
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    int b_code;                 ///< backward MV resolution for B Frames (mpeg4) 
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    int16_t (*p_mv_table_base)[2];
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    int16_t (*b_forw_mv_table_base)[2];
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    int16_t (*b_back_mv_table_base)[2];
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    int16_t (*b_bidir_forw_mv_table_base)[2]; 
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    int16_t (*b_bidir_back_mv_table_base)[2]; 
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    int16_t (*b_direct_mv_table_base)[2];
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    int16_t (*p_field_mv_table_base[2][2])[2];
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    int16_t (*b_field_mv_table_base[2][2][2])[2];
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    int16_t (*p_mv_table)[2];            ///< MV table (1MV per MB) p-frame encoding 
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    int16_t (*b_forw_mv_table)[2];       ///< MV table (1MV per MB) forward mode b-frame encoding 
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    int16_t (*b_back_mv_table)[2];       ///< MV table (1MV per MB) backward mode b-frame encoding 
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    int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 
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    int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 
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    int16_t (*b_direct_mv_table)[2];     ///< MV table (1MV per MB) direct mode b-frame encoding 
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    int16_t (*p_field_mv_table[2][2])[2];   ///< MV table (2MV per MB) interlaced p-frame encoding
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    int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
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    uint8_t (*p_field_select_table[2]);
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    uint8_t (*b_field_select_table[2][2]);
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    int me_method;                       ///< ME algorithm 
400
    int mv_dir;
401
#define MV_DIR_BACKWARD  1
402
#define MV_DIR_FORWARD   2
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#define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
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    int mv_type;
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#define MV_TYPE_16X16       0   ///< 1 vector for the whole mb 
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#define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV) 
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#define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block  
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#define MV_TYPE_FIELD       3   ///< 2 vectors, one per field  
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#define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors 
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    /**motion vectors for a macroblock 
411
       first coordinate : 0 = forward 1 = backward
412
       second "         : depend on type
413
       third  "         : 0 = x, 1 = y
414
    */
415
    int mv[2][4][2];
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    int field_select[2][2];
417
    int last_mv[2][2][2];             ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4 
418
    uint8_t *fcode_tab;               ///< smallest fcode needed for each MV 
419
    
420
    MotionEstContext me;
421

    
422
    int no_rounding;  /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...) 
423
                        for b-frames rounding mode is allways 0 */
424

    
425
    int hurry_up;     /**< when set to 1 during decoding, b frames will be skiped
426
                         when set to 2 idct/dequant will be skipped too */
427
                        
428
    /* macroblock layer */
429
    int mb_x, mb_y;
430
    int mb_skip_run;
431
    int mb_intra;
432
    uint16_t *mb_type;           ///< Table for candidate MB types for encoding
433
#define CANDIDATE_MB_TYPE_INTRA    0x01
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#define CANDIDATE_MB_TYPE_INTER    0x02
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#define CANDIDATE_MB_TYPE_INTER4V  0x04
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#define CANDIDATE_MB_TYPE_SKIPED   0x08
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//#define MB_TYPE_GMC      0x10
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#define CANDIDATE_MB_TYPE_DIRECT   0x10
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#define CANDIDATE_MB_TYPE_FORWARD  0x20
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#define CANDIDATE_MB_TYPE_BACKWARD 0x40
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#define CANDIDATE_MB_TYPE_BIDIR    0x80
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#define CANDIDATE_MB_TYPE_INTER_I    0x100
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#define CANDIDATE_MB_TYPE_FORWARD_I  0x200
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#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
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#define CANDIDATE_MB_TYPE_BIDIR_I    0x800
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449
    int block_index[6]; ///< index to current MB in block based arrays with edges
450
    int block_wrap[6];
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    uint8_t *dest[3];
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453
    int *mb_index2xy;        ///< mb_index -> mb_x + mb_y*mb_stride
454

    
455
    /** matrix transmitted in the bitstream */
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    uint16_t intra_matrix[64];
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    uint16_t chroma_intra_matrix[64];
458
    uint16_t inter_matrix[64];
459
    uint16_t chroma_inter_matrix[64];
460
#define QUANT_BIAS_SHIFT 8
461
    int intra_quant_bias;    ///< bias for the quantizer 
462
    int inter_quant_bias;    ///< bias for the quantizer 
463
    int min_qcoeff;          ///< minimum encodable coefficient 
464
    int max_qcoeff;          ///< maximum encodable coefficient 
465
    int ac_esc_length;       ///< num of bits needed to encode the longest esc 
466
    uint8_t *intra_ac_vlc_length;
467
    uint8_t *intra_ac_vlc_last_length;
468
    uint8_t *inter_ac_vlc_length;
469
    uint8_t *inter_ac_vlc_last_length;
470
    uint8_t *luma_dc_vlc_length;
471
    uint8_t *chroma_dc_vlc_length;
472
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
473

    
474
    int coded_score[6];
475

    
476
    /** precomputed matrix (combine qscale and DCT renorm) */
477
    int (*q_intra_matrix)[64];
478
    int (*q_inter_matrix)[64];
479
    /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
480
    uint16_t (*q_intra_matrix16)[2][64];
481
    uint16_t (*q_inter_matrix16)[2][64];
482
    int block_last_index[12];  ///< last non zero coefficient in block
483
    /* scantables */
484
    ScanTable __align8 intra_scantable;
485
    ScanTable intra_h_scantable;
486
    ScanTable intra_v_scantable;
487
    ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
488
    
489
    /* noise reduction */
490
    int (*dct_error_sum)[64];
491
    int dct_count[2];
492
    uint16_t (*dct_offset)[64];
493

    
494
    void *opaque;              ///< private data for the user
495

    
496
    /* bit rate control */
497
    int64_t wanted_bits;
498
    int64_t total_bits;
499
    int frame_bits;                ///< bits used for the current frame 
500
    RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
501

    
502
    /* statistics, used for 2-pass encoding */
503
    int mv_bits;
504
    int header_bits;
505
    int i_tex_bits;
506
    int p_tex_bits;
507
    int i_count;
508
    int f_count;
509
    int b_count;
510
    int skip_count;
511
    int misc_bits; ///< cbp, mb_type
512
    int last_bits; ///< temp var used for calculating the above vars
513
    
514
    /* error concealment / resync */
515
    int error_count;
516
    uint8_t *error_status_table;       ///< table of the error status of each MB  
517
#define VP_START            1          ///< current MB is the first after a resync marker 
518
#define AC_ERROR            2
519
#define DC_ERROR            4
520
#define MV_ERROR            8
521
#define AC_END              16
522
#define DC_END              32
523
#define MV_END              64
524
//FIXME some prefix?
525
    
526
    int resync_mb_x;                 ///< x position of last resync marker 
527
    int resync_mb_y;                 ///< y position of last resync marker 
528
    GetBitContext last_resync_gb;    ///< used to search for the next resync marker 
529
    int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
530
    int next_p_frame_damaged;        ///< set if the next p frame is damaged, to avoid showing trashed b frames 
531
    int error_resilience;
532
    
533
    ParseContext parse_context;
534

    
535
    /* H.263 specific */
536
    int gob_index;
537
    int obmc;                       ///< overlapped block motion compensation
538
        
539
    /* H.263+ specific */
540
    int umvplus;                    ///< == H263+ && unrestricted_mv 
541
    int h263_aic;                   ///< Advanded INTRA Coding (AIC) 
542
    int h263_aic_dir;               ///< AIC direction: 0 = left, 1 = top
543
    int h263_slice_structured;
544
    int alt_inter_vlc;              ///< alternative inter vlc
545
    int modified_quant;
546
    int loop_filter;    
547
    int custom_pcf;
548
    
549
    /* mpeg4 specific */
550
    int time_increment_resolution;
551
    int time_increment_bits;        ///< number of bits to represent the fractional part of time 
552
    int last_time_base;
553
    int time_base;                  ///< time in seconds of last I,P,S Frame 
554
    int64_t time;                   ///< time of current frame  
555
    int64_t last_non_b_time;
556
    uint16_t pp_time;               ///< time distance between the last 2 p,s,i frames 
557
    uint16_t pb_time;               ///< time distance between the last b and p,s,i frame 
558
    uint16_t pp_field_time;
559
    uint16_t pb_field_time;         ///< like above, just for interlaced 
560
    int shape;
561
    int vol_sprite_usage;
562
    int sprite_width;
563
    int sprite_height;
564
    int sprite_left;
565
    int sprite_top;
566
    int sprite_brightness_change;
567
    int num_sprite_warping_points;
568
    int real_sprite_warping_points;
569
    int sprite_offset[2][2];         ///< sprite offset[isChroma][isMVY] 
570
    int sprite_delta[2][2];          ///< sprite_delta [isY][isMVY]  
571
    int sprite_shift[2];             ///< sprite shift [isChroma] 
572
    int mcsel;
573
    int quant_precision;
574
    int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC  
575
    int scalability;
576
    int hierachy_type;
577
    int enhancement_type;
578
    int new_pred;
579
    int reduced_res_vop;
580
    int aspect_ratio_info; //FIXME remove
581
    int sprite_warping_accuracy;
582
    int low_latency_sprite;
583
    int data_partitioning;           ///< data partitioning flag from header 
584
    int partitioned_frame;           ///< is current frame partitioned 
585
    int rvlc;                        ///< reversible vlc 
586
    int resync_marker;               ///< could this stream contain resync markers
587
    int low_delay;                   ///< no reordering needed / has no b-frames 
588
    int vo_type;
589
    int vol_control_parameters;      ///< does the stream contain the low_delay flag, used to workaround buggy encoders 
590
    int intra_dc_threshold;          ///< QP above whch the ac VLC should be used for intra dc 
591
    PutBitContext tex_pb;            ///< used for data partitioned VOPs 
592
    PutBitContext pb2;               ///< used for data partitioned VOPs 
593
    int mpeg_quant;
594
    int t_frame;                       ///< time distance of first I -> B, used for interlaced b frames 
595
    int padding_bug_score;             ///< used to detect the VERY common padding bug in MPEG4 
596

    
597
    /* divx specific, used to workaround (many) bugs in divx5 */
598
    int divx_version;
599
    int divx_build;
600
    int divx_packed;
601
#define BITSTREAM_BUFFER_SIZE 1024*256
602
    uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
603
    int bitstream_buffer_size;
604
    
605
    int xvid_build;
606
    
607
    /* lavc specific stuff, used to workaround bugs in libavcodec */
608
    int ffmpeg_version;
609
    int lavc_build;
610
    
611
    /* RV10 specific */
612
    int rv10_version; ///< RV10 version: 0 or 3 
613
    int rv10_first_dc_coded[3];
614
    
615
    /* MJPEG specific */
616
    struct MJpegContext *mjpeg_ctx;
617
    int mjpeg_vsample[3];       ///< vertical sampling factors, default = {2, 1, 1} 
618
    int mjpeg_hsample[3];       ///< horizontal sampling factors, default = {2, 1, 1} 
619
    int mjpeg_write_tables;     ///< do we want to have quantisation- and huffmantables in the jpeg file ? 
620
    int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers 
621

    
622
    /* MSMPEG4 specific */
623
    int mv_table_index;
624
    int rl_table_index;
625
    int rl_chroma_table_index;
626
    int dc_table_index;
627
    int use_skip_mb_code;
628
    int slice_height;      ///< in macroblocks 
629
    int first_slice_line;  ///< used in mpeg4 too to handle resync markers 
630
    int flipflop_rounding;
631
    int msmpeg4_version;   ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
632
    int per_mb_rl_table;
633
    int esc3_level_length;
634
    int esc3_run_length;
635
    /** [mb_intra][isChroma][level][run][last] */
636
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
637
    int inter_intra_pred;
638
    int mspel;
639

    
640
    /* decompression specific */
641
    GetBitContext gb;
642

    
643
    /* Mpeg1 specific */
644
    int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific 
645
    int last_mv_dir;         ///< last mv_dir, used for b frame encoding 
646
    int broken_link;         ///< no_output_of_prior_pics_flag
647
    uint8_t *vbv_delay_ptr;  ///< pointer to vbv_delay in the bitstream 
648
    
649
    /* MPEG2 specific - I wish I had not to support this mess. */
650
    int progressive_sequence;
651
    int mpeg_f_code[2][2];
652
    int picture_structure;
653
/* picture type */
654
#define PICT_TOP_FIELD     1
655
#define PICT_BOTTOM_FIELD  2
656
#define PICT_FRAME         3
657

    
658
    int intra_dc_precision;
659
    int frame_pred_frame_dct;
660
    int top_field_first;
661
    int concealment_motion_vectors;
662
    int q_scale_type;
663
    int intra_vlc_format;
664
    int alternate_scan;
665
    int repeat_first_field;
666
    int chroma_420_type;
667
    int chroma_format;
668
#define CHROMA_420 1
669
#define CHROMA_422 2
670
#define CHROMA_444 3
671
    int chroma_x_shift;//depend on pix_format, that depend on chroma_format
672
    int chroma_y_shift;
673

    
674
    int progressive_frame;
675
    int full_pel[2];
676
    int interlaced_dct;
677
    int first_slice;
678
    int first_field;         ///< is 1 for the first field of a field picture 0 otherwise
679

    
680
    /* RTP specific */
681
    int rtp_mode;
682
    
683
    uint8_t *ptr_lastgob;
684
    int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
685
    short * pblocks[12];
686
    
687
    DCTELEM (*block)[64]; ///< points to one of the following blocks 
688
    DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
689
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
690
#define SLICE_OK         0
691
#define SLICE_ERROR     -1
692
#define SLICE_END       -2 ///<end marker found
693
#define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
694
    
695
    void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, 
696
                           DCTELEM *block/*align 16*/, int n, int qscale);
697
    void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, 
698
                           DCTELEM *block/*align 16*/, int n, int qscale);
699
    void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, 
700
                           DCTELEM *block/*align 16*/, int n, int qscale);
701
    void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, 
702
                           DCTELEM *block/*align 16*/, int n, int qscale);
703
    void (*dct_unquantize_h263_intra)(struct MpegEncContext *s, 
704
                           DCTELEM *block/*align 16*/, int n, int qscale);
705
    void (*dct_unquantize_h263_inter)(struct MpegEncContext *s, 
706
                           DCTELEM *block/*align 16*/, int n, int qscale);
707
    void (*dct_unquantize_h261_intra)(struct MpegEncContext *s, 
708
                           DCTELEM *block/*align 16*/, int n, int qscale);
709
    void (*dct_unquantize_h261_inter)(struct MpegEncContext *s, 
710
                           DCTELEM *block/*align 16*/, int n, int qscale);
711
    void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
712
                           DCTELEM *block/*align 16*/, int n, int qscale);
713
    void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
714
                           DCTELEM *block/*align 16*/, int n, int qscale);
715
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
716
    int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
717
    void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
718
} MpegEncContext;
719

    
720

    
721
int DCT_common_init(MpegEncContext *s);
722
void MPV_decode_defaults(MpegEncContext *s);
723
int MPV_common_init(MpegEncContext *s);
724
void MPV_common_end(MpegEncContext *s);
725
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
726
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
727
void MPV_frame_end(MpegEncContext *s);
728
int MPV_encode_init(AVCodecContext *avctx);
729
int MPV_encode_end(AVCodecContext *avctx);
730
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
731
#ifdef HAVE_MMX
732
void MPV_common_init_mmx(MpegEncContext *s);
733
#endif
734
#ifdef ARCH_ALPHA
735
void MPV_common_init_axp(MpegEncContext *s);
736
#endif
737
#ifdef HAVE_MLIB
738
void MPV_common_init_mlib(MpegEncContext *s);
739
#endif
740
#ifdef HAVE_MMI
741
void MPV_common_init_mmi(MpegEncContext *s);
742
#endif
743
#ifdef ARCH_ARMV4L
744
void MPV_common_init_armv4l(MpegEncContext *s);
745
#endif
746
#ifdef ARCH_POWERPC
747
void MPV_common_init_ppc(MpegEncContext *s);
748
#endif
749
extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
750
void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
751
void ff_clean_intra_table_entries(MpegEncContext *s);
752
void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
753
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
754
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h, 
755
                                    int src_x, int src_y, int w, int h);
756
#define END_NOT_FOUND -100
757
int ff_combine_frame(ParseContext *pc, int next, uint8_t **buf, int *buf_size);
758
void ff_parse_close(AVCodecParserContext *s);
759
void ff_mpeg_flush(AVCodecContext *avctx);
760
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
761
void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
762
int ff_find_unused_picture(MpegEncContext *s, int shared);
763
void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
764
void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
765

    
766
void ff_er_frame_start(MpegEncContext *s);
767
void ff_er_frame_end(MpegEncContext *s);
768
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
769

    
770

    
771
extern enum PixelFormat ff_yuv420p_list[2];
772

    
773
void ff_init_block_index(MpegEncContext *s);
774

    
775
static inline void ff_update_block_index(MpegEncContext *s){
776
    const int block_size= 8>>s->avctx->lowres;
777

    
778
    s->block_index[0]+=2;
779
    s->block_index[1]+=2;
780
    s->block_index[2]+=2;
781
    s->block_index[3]+=2;
782
    s->block_index[4]++;
783
    s->block_index[5]++;
784
    s->dest[0]+= 2*block_size;
785
    s->dest[1]+= block_size;
786
    s->dest[2]+= block_size;
787
}
788

    
789
static inline int get_bits_diff(MpegEncContext *s){
790
    const int bits= put_bits_count(&s->pb);
791
    const int last= s->last_bits;
792

    
793
    s->last_bits = bits;
794

    
795
    return bits - last;
796
}
797

    
798
/* motion_est.c */
799
void ff_estimate_p_frame_motion(MpegEncContext * s,
800
                             int mb_x, int mb_y);
801
void ff_estimate_b_frame_motion(MpegEncContext * s,
802
                             int mb_x, int mb_y);
803
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
804
void ff_fix_long_p_mvs(MpegEncContext * s);
805
void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
806
                     int16_t (*mv_table)[2], int f_code, int type, int truncate);
807
void ff_init_me(MpegEncContext *s);
808
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
809
inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
810
                             int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], 
811
                             int ref_mv_scale, int size, int h);                             
812
int inline ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
813
                               int ref_index, int size, int h, int add_rate);
814

    
815
/* mpeg12.c */
816
extern const int16_t ff_mpeg1_default_intra_matrix[64];
817
extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
818
extern uint8_t ff_mpeg1_dc_scale_table[128];
819

    
820
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
821
void mpeg1_encode_mb(MpegEncContext *s,
822
                     DCTELEM block[6][64],
823
                     int motion_x, int motion_y);
824
void ff_mpeg1_encode_init(MpegEncContext *s);
825
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
826
void ff_mpeg1_clean_buffers(MpegEncContext *s);
827
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
828

    
829

    
830
/** RLTable. */
831
typedef struct RLTable {
832
    int n;                         ///< number of entries of table_vlc minus 1 
833
    int last;                      ///< number of values for last = 0 
834
    const uint16_t (*table_vlc)[2];
835
    const int8_t *table_run;
836
    const int8_t *table_level;
837
    uint8_t *index_run[2];         ///< encoding only 
838
    int8_t *max_level[2];          ///< encoding & decoding 
839
    int8_t *max_run[2];            ///< encoding & decoding 
840
    VLC vlc;                       ///< decoding only deprected FIXME remove
841
    RL_VLC_ELEM *rl_vlc[32];       ///< decoding only 
842
} RLTable;
843

    
844
void init_rl(RLTable *rl, int use_static);
845
void init_vlc_rl(RLTable *rl, int use_static);
846

    
847
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
848
{
849
    int index;
850
    index = rl->index_run[last][run];
851
    if (index >= rl->n)
852
        return rl->n;
853
    if (level > rl->max_level[last][run])
854
        return rl->n;
855
    return index + level - 1;
856
}
857

    
858
extern uint8_t ff_mpeg4_y_dc_scale_table[32];
859
extern uint8_t ff_mpeg4_c_dc_scale_table[32];
860
extern uint8_t ff_aic_dc_scale_table[32];
861
extern const int16_t ff_mpeg4_default_intra_matrix[64];
862
extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
863
extern const uint8_t ff_h263_chroma_qscale_table[32];
864
extern const uint8_t ff_h263_loop_filter_strength[32];
865

    
866
/* h261.c */
867
void ff_h261_loop_filter(MpegEncContext *s);
868
void ff_h261_reorder_mb_index(MpegEncContext* s);
869
void ff_h261_encode_mb(MpegEncContext *s,
870
                    DCTELEM block[6][64],
871
                    int motion_x, int motion_y);
872
void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
873
void ff_h261_encode_init(MpegEncContext *s);
874

    
875

    
876
/* h263.c, h263dec.c */
877
int ff_h263_decode_init(AVCodecContext *avctx);
878
int ff_h263_decode_frame(AVCodecContext *avctx, 
879
                             void *data, int *data_size,
880
                             uint8_t *buf, int buf_size);
881
int ff_h263_decode_end(AVCodecContext *avctx);
882
void h263_encode_mb(MpegEncContext *s, 
883
                    DCTELEM block[6][64],
884
                    int motion_x, int motion_y);
885
void mpeg4_encode_mb(MpegEncContext *s, 
886
                    DCTELEM block[6][64],
887
                    int motion_x, int motion_y);
888
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
889
void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
890
void h263_encode_gob_header(MpegEncContext * s, int mb_line);
891
int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
892
                        int *px, int *py);
893
void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, 
894
                   int dir);
895
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
896
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
897
void h263_encode_init(MpegEncContext *s);
898
void h263_decode_init_vlc(MpegEncContext *s);
899
int h263_decode_picture_header(MpegEncContext *s);
900
int ff_h263_decode_gob_header(MpegEncContext *s);
901
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
902
void ff_h263_update_motion_val(MpegEncContext * s);
903
void ff_h263_loop_filter(MpegEncContext * s);
904
void ff_set_qscale(MpegEncContext * s, int qscale);
905
int ff_h263_decode_mba(MpegEncContext *s);
906
void ff_h263_encode_mba(MpegEncContext *s);
907

    
908
int intel_h263_decode_picture_header(MpegEncContext *s);
909
int flv_h263_decode_picture_header(MpegEncContext *s);
910
int ff_h263_decode_mb(MpegEncContext *s,
911
                      DCTELEM block[6][64]);
912
int ff_mpeg4_decode_mb(MpegEncContext *s,
913
                      DCTELEM block[6][64]);
914
int h263_get_picture_format(int width, int height);
915
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
916
void ff_mpeg4_clean_buffers(MpegEncContext *s);
917
void ff_mpeg4_stuffing(PutBitContext * pbc);
918
void ff_mpeg4_init_partitions(MpegEncContext *s);
919
void ff_mpeg4_merge_partitions(MpegEncContext *s);
920
void ff_clean_mpeg4_qscales(MpegEncContext *s);
921
void ff_clean_h263_qscales(MpegEncContext *s);
922
int ff_mpeg4_decode_partitions(MpegEncContext *s);
923
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
924
int ff_h263_resync(MpegEncContext *s);
925
int ff_h263_get_gob_height(MpegEncContext *s);
926
int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
927
int ff_h263_round_chroma(int x);
928
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
929
int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
930

    
931

    
932
/* rv10.c */
933
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
934
int rv_decode_dc(MpegEncContext *s, int n);
935
void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
936

    
937

    
938
/* msmpeg4.c */
939
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
940
void msmpeg4_encode_ext_header(MpegEncContext * s);
941
void msmpeg4_encode_mb(MpegEncContext * s, 
942
                       DCTELEM block[6][64],
943
                       int motion_x, int motion_y);
944
int msmpeg4_decode_picture_header(MpegEncContext * s);
945
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
946
int ff_msmpeg4_decode_init(MpegEncContext *s);
947
void ff_msmpeg4_encode_init(MpegEncContext *s);
948
int ff_wmv2_decode_picture_header(MpegEncContext * s);
949
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
950
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
951
void ff_mspel_motion(MpegEncContext *s,
952
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
953
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
954
                               int motion_x, int motion_y, int h);
955
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
956
void ff_wmv2_encode_mb(MpegEncContext * s, 
957
                       DCTELEM block[6][64],
958
                       int motion_x, int motion_y);
959

    
960
/* mjpeg.c */
961
int mjpeg_init(MpegEncContext *s);
962
void mjpeg_close(MpegEncContext *s);
963
void mjpeg_encode_mb(MpegEncContext *s, 
964
                     DCTELEM block[6][64]);
965
void mjpeg_picture_header(MpegEncContext *s);
966
void mjpeg_picture_trailer(MpegEncContext *s);
967
void ff_mjpeg_stuffing(PutBitContext * pbc);
968

    
969

    
970
/* rate control */
971
int ff_rate_control_init(MpegEncContext *s);
972
float ff_rate_estimate_qscale(MpegEncContext *s);
973
void ff_write_pass1_stats(MpegEncContext *s);
974
void ff_rate_control_uninit(MpegEncContext *s);
975
double ff_eval(char *s, double *const_value, const char **const_name,
976
               double (**func1)(void *, double), const char **func1_name,
977
               double (**func2)(void *, double, double), char **func2_name,
978
               void *opaque);
979
int ff_vbv_update(MpegEncContext *s, int frame_size);
980

    
981

    
982
#endif /* AVCODEC_MPEGVIDEO_H */