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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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 *
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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_H263,
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    FMT_MJPEG, 
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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_PICTURE_COUNT 15
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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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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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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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    int 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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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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typedef struct Picture{
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    FF_COMMON_FRAME
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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 */
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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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    int state;
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    int frame_start_found;
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} ParseContext;
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struct MpegEncContext;
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typedef struct MotionEstContext{
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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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    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 pre_pass;                      /* = 1 for the pre pass */
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    int dia_size;
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    uint16_t (*mv_penalty)[MAX_MV*2+1];  /* amount of bits needed to encode a MV */
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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 xmin, int ymin, int xmax, int ymax,
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                                  int pred_x, int pred_y, Picture *ref_picture, 
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                                  int n, int size, uint16_t * const mv_penalty);
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    int (*motion_search[7])(struct MpegEncContext * s, int block,
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                             int *mx_ptr, int *my_ptr,
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                             int P[10][2], int pred_x, int pred_y,
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                             int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2], 
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                             int ref_mv_scale, uint16_t * const mv_penalty);
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    int (*pre_motion_search)(struct MpegEncContext * s, int block,
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                             int *mx_ptr, int *my_ptr,
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                             int P[10][2], int pred_x, int pred_y,
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                             int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2], 
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                             int ref_mv_scale, uint16_t * const mv_penalty);
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    int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture, 
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                                  uint16_t * const mv_penalty);
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}MotionEstContext;
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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 frame_rate; /* number of frames per second */
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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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    int bit_rate_tolerance; /* amount of +- bits (>0)*/
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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_rv10; /* use RV10 variation for H263 */
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    int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
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    int h263_intel; /* use I263 intel h263 header */
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    int codec_id;     /* see CODEC_ID_xxx */
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    int fixed_qscale; /* fixed qscale if non zero */
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    float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0) */
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    float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
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    int qmin;         /* min qscale */
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    int qmax;         /* max qscale */
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    int max_qdiff;    /* max qscale difference between frames */
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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 max_b_frames; /* max number of b-frames for encoding */
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    int b_frame_strategy;
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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;
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    int picture_number;
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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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    int mb_width, mb_height;   /* number of MBs horizontally & vertically */
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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[MAX_PICTURE_COUNT]; /* main picture buffer */
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    Picture *input_picture[MAX_PICTURE_COUNT]; /* next pictures on display order for encoding*/
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    Picture *reordered_input_picture[MAX_PICTURE_COUNT]; /* pointer to the next pictures in codedorder for encoding*/
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    Picture last_picture;       /* previous picture */
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    Picture next_picture;       /* previous picture (for bidir pred) */
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    Picture new_picture;        /* source picture for encoding */
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    Picture current_picture;    /* buffer to store the decompressed current picture */
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    int last_dc[3];              /* last DC values for MPEG1 */
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    int16_t *dc_val[3];            /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
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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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    uint8_t *coded_block;          /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
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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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    int qscale;                 /* QP */
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    float frame_qscale;         /* qscale from the frame level rc FIXME remove*/
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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;
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    int last_non_b_pict_type;   /* used for mpeg4 gmc b-frames & ratecontrol */
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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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    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 (*motion_val)[2];            /* used for MV prediction (4MV per MB) */
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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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    int me_method;                     /* ME algorithm */
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    int scene_change_score;
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    int mv_dir;
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#define MV_DIR_BACKWARD  1
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#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 
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       first coordinate : 0 = forward 1 = backward
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       second "         : depend on type
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       third  "         : 0 = x, 1 = y
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    */
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    int mv[2][4][2];
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    int field_select[2][2];
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    int last_mv[2][2][2];             /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
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    uint8_t *fcode_tab; /* smallest fcode needed for each MV */
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    MotionEstContext me;
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    int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...) 
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                        for b-frames rounding mode is allways 0 */
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    int hurry_up;     /* when set to 1 during decoding, b frames will be skiped
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                         when set to 2 idct/dequant will be skipped too */
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    /* macroblock layer */
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    int mb_x, mb_y;
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    int mb_incr;
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    int mb_intra;
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    uint8_t *mb_type;       /* Table for MB type */
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#define MB_TYPE_INTRA    0x01
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#define MB_TYPE_INTER    0x02
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#define MB_TYPE_INTER4V  0x04
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#define MB_TYPE_SKIPED   0x08
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#define MB_TYPE_GMC      0x10
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#define MB_TYPE_DIRECT   0x10
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#define MB_TYPE_FORWARD  0x20
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#define MB_TYPE_BACKWARD 0x40
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#define MB_TYPE_BIDIR    0x80
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    int block_index[6]; /* index to current MB in block based arrays with edges*/
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    int block_wrap[6];
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    /* matrix transmitted in the bitstream */
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    uint16_t intra_matrix[64];
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    uint16_t chroma_intra_matrix[64];
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    uint16_t inter_matrix[64];
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    uint16_t chroma_inter_matrix[64];
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#define QUANT_BIAS_SHIFT 4
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    int intra_quant_bias;    /* bias for the quantizer */
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    int inter_quant_bias;    /* bias for the quantizer */
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    int min_qcoeff;          /* minimum encodable coefficient */
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    int max_qcoeff;          /* maximum encodable coefficient */
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    int ac_esc_length;       /* num of bits needed to encode the longest esc */
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    uint8_t *intra_ac_vlc_length;
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    uint8_t *intra_ac_vlc_last_length;
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    uint8_t *inter_ac_vlc_length;
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    uint8_t *inter_ac_vlc_last_length;
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    uint8_t *luma_dc_vlc_length;
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    uint8_t *chroma_dc_vlc_length;
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#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
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    /* precomputed matrix (combine qscale and DCT renorm) */
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    int __align8 q_intra_matrix[32][64];
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    int __align8 q_inter_matrix[32][64];
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    /* identical to the above but for MMX & these are not permutated */
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    uint16_t __align8 q_intra_matrix16[32][64];
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    uint16_t __align8 q_inter_matrix16[32][64];
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    uint16_t __align8 q_intra_matrix16_bias[32][64];
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    uint16_t __align8 q_inter_matrix16_bias[32][64];
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    int block_last_index[6];  /* last non zero coefficient in block */
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    /* scantables */
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    ScanTable __align8 intra_scantable;
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    ScanTable intra_h_scantable;
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    ScanTable intra_v_scantable;
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    ScanTable inter_scantable; // if inter == intra then intra should be used to reduce tha cache usage
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    void *opaque; /* private data for the user */
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    /* bit rate control */
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    int I_frame_bits; //FIXME used in mpeg12 ...
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    int64_t wanted_bits;
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    int64_t total_bits;
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    int frame_bits;        /* bits used for the current frame */
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    RateControlContext rc_context; // contains stuff only accessed in ratecontrol.c
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    /* statistics, used for 2-pass encoding */
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    int mv_bits;
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    int header_bits;
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    int i_tex_bits;
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    int p_tex_bits;
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    int i_count;
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    int f_count;
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    int b_count;
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    int skip_count;
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    int misc_bits; // cbp, mb_type
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    int last_bits; //temp var used for calculating the above vars
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    /* error concealment / resync */
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    uint8_t *error_status_table;       /* table of the error status of each MB */ 
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#define VP_START            1        /* current MB is the first after a resync marker */
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#define AC_ERROR            2
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#define DC_ERROR            4
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#define MV_ERROR            8
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#define AC_END              16
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#define DC_END              32
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#define MV_END              64
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//FIXME some prefix?
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387
    int resync_mb_x;                 /* x position of last resync marker */
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    int resync_mb_y;                 /* y position of last resync marker */
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    GetBitContext last_resync_gb;    /* used to search for the next resync marker */
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    int mb_num_left;                 /* number of MBs left in this video packet (for partitioned Slices only)*/
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    int next_p_frame_damaged;        /* set if the next p frame is damaged, to avoid showing trashed b frames */
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    int error_resilience;
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    ParseContext parse_context;
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    /* H.263 specific */
397
    int gob_number;
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    int gob_index;
399
        
400
    /* H.263+ specific */
401
    int umvplus;                    /* == H263+ && unrestricted_mv */
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    int h263_aic; /* Advanded INTRA Coding (AIC) */
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    int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
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    /* mpeg4 specific */
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    int time_increment_resolution;
407
    int time_increment_bits;        /* number of bits to represent the fractional part of time */
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    int last_time_base;
409
    int time_base;                  /* time in seconds of last I,P,S Frame */
410
    int64_t time;                   /* time of current frame */ 
411
    int64_t last_non_b_time;
412
    uint16_t pp_time;               /* time distance between the last 2 p,s,i frames */
413
    uint16_t pb_time;               /* time distance between the last b and p,s,i frame */
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    uint16_t pp_field_time;
415
    uint16_t pb_field_time;         /* like above, just for interlaced */
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    int shape;
417
    int vol_sprite_usage;
418
    int sprite_width;
419
    int sprite_height;
420
    int sprite_left;
421
    int sprite_top;
422
    int sprite_brightness_change;
423
    int num_sprite_warping_points;
424
    int real_sprite_warping_points;
425
    int sprite_offset[2][2];         /* sprite offset[isChroma][isMVY] */
426
    int sprite_delta[2][2];          /* sprite_delta [isY][isMVY] */ 
427
    int sprite_shift[2];             /* sprite shift [isChroma] */
428
    int mcsel;
429
    int quant_precision;
430
    int quarter_sample;              /* 1->qpel, 0->half pel ME/MC */ 
431
    int scalability;
432
    int hierachy_type;
433
    int enhancement_type;
434
    int new_pred;
435
    int reduced_res_vop;
436
    int aspect_ratio_info;
437
    int aspected_width;
438
    int aspected_height;
439
    int sprite_warping_accuracy;
440
    int low_latency_sprite;
441
    int data_partitioning;           /* data partitioning flag from header */
442
    int partitioned_frame;           /* is current frame partitioned */
443
    int rvlc;                        /* reversible vlc */
444
    int resync_marker;               /* could this stream contain resync markers*/
445
    int low_delay;                   /* no reordering needed / has no b-frames */
446
    int vo_type;
447
    int vol_control_parameters;      /* does the stream contain the low_delay flag, used to workaround buggy encoders */
448
    PutBitContext tex_pb;            /* used for data partitioned VOPs */
449
    PutBitContext pb2;               /* used for data partitioned VOPs */
450
#define PB_BUFFER_SIZE 1024*256
451
    uint8_t *tex_pb_buffer;          
452
    uint8_t *pb2_buffer;
453
    int mpeg_quant;
454
#define CO_LOCATED_TYPE_4MV     1
455
#define CO_LOCATED_TYPE_FIELDMV 2
456
    int8_t *co_located_type_table;     /* 4mv & field_mv info for next b frame */
457
    int16_t (*field_mv_table)[2][2];   /* used for interlaced b frame decoding */
458
    int8_t (*field_select_table)[2];   /* wtf, no really another table for interlaced b frames */
459
    int t_frame;                     /* time distance of first I -> B, used for interlaced b frames */
460
    int padding_bug_score;           /* used to detect the VERY common padding bug in MPEG4 */
461

    
462
    /* divx specific, used to workaround (many) bugs in divx5 */
463
    int divx_version;
464
    int divx_build;
465
#define BITSTREAM_BUFFER_SIZE 1024*256
466
    uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
467
    int bitstream_buffer_size;
468
    
469
    int xvid_build;
470
    
471
    /* lavc specific stuff, used to workaround bugs in libavcodec */
472
    int ffmpeg_version;
473
    int lavc_build;
474
    
475
    /* RV10 specific */
476
    int rv10_version; /* RV10 version: 0 or 3 */
477
    int rv10_first_dc_coded[3];
478
    
479
    /* MJPEG specific */
480
    struct MJpegContext *mjpeg_ctx;
481
    int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
482
    int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
483
    int mjpeg_write_tables; /* do we want to have quantisation- and
484
                               huffmantables in the jpeg file ? */
485
    int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
486

    
487
    /* MSMPEG4 specific */
488
    int mv_table_index;
489
    int rl_table_index;
490
    int rl_chroma_table_index;
491
    int dc_table_index;
492
    int use_skip_mb_code;
493
    int slice_height;      /* in macroblocks */
494
    int first_slice_line;  /* used in mpeg4 too to handle resync markers */
495
    int flipflop_rounding;
496
    int msmpeg4_version;   /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
497
    int per_mb_rl_table;
498
    int esc3_level_length;
499
    int esc3_run_length;
500
    /* [mb_intra][isChroma][level][run][last] */
501
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
502
    int inter_intra_pred;
503
    int mspel;
504

    
505
    /* decompression specific */
506
    GetBitContext gb;
507

    
508
    /* Mpeg1 specific */
509
    int fake_picture_number; /* picture number at the bitstream frame rate */
510
    int gop_picture_number;  /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
511
    int last_mv_dir;         /* last mv_dir, used for b frame encoding */
512
    
513
    /* MPEG2 specific - I wish I had not to support this mess. */
514
    int progressive_sequence;
515
    int mpeg_f_code[2][2];
516
    int picture_structure;
517
/* picture type */
518
#define PICT_TOP_FIELD     1
519
#define PICT_BOTTOM_FIELD  2
520
#define PICT_FRAME         3
521

    
522
    int intra_dc_precision;
523
    int frame_pred_frame_dct;
524
    int top_field_first;
525
    int concealment_motion_vectors;
526
    int q_scale_type;
527
    int intra_vlc_format;
528
    int alternate_scan;
529
    int repeat_first_field;
530
    int chroma_420_type;
531
    int progressive_frame;
532
    int mpeg2;
533
    int full_pel[2];
534
    int interlaced_dct;
535
    int first_slice;
536
    int first_field;
537
    
538
    /* RTP specific */
539
    /* These are explained on avcodec.h */
540
    int rtp_mode;
541
    int rtp_payload_size;
542
    void (*rtp_callback)(void *data, int size, int packet_number);
543
    uint8_t *ptr_lastgob;
544
    uint8_t *ptr_last_mb_line;
545
    uint32_t mb_line_avgsize;
546
    
547
    DCTELEM (*block)[64]; /* points to one of the following blocks */
548
    DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
549
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
550
#define SLICE_OK         0
551
#define SLICE_ERROR     -1
552
#define SLICE_END       -2 //end marker found
553
#define SLICE_NOEND     -3 //no end marker or error found but mb count exceeded
554
    
555
    void (*dct_unquantize_mpeg1)(struct MpegEncContext *s, 
556
                           DCTELEM *block/*align 16*/, int n, int qscale);
557
    void (*dct_unquantize_mpeg2)(struct MpegEncContext *s, 
558
                           DCTELEM *block/*align 16*/, int n, int qscale);
559
    void (*dct_unquantize_h263)(struct MpegEncContext *s, 
560
                           DCTELEM *block/*align 16*/, int n, int qscale);
561
    void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
562
                           DCTELEM *block/*align 16*/, int n, int qscale);
563
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
564
    int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
565
} MpegEncContext;
566

    
567

    
568
int DCT_common_init(MpegEncContext *s);
569
int MPV_common_init(MpegEncContext *s);
570
void MPV_common_end(MpegEncContext *s);
571
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
572
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
573
void MPV_frame_end(MpegEncContext *s);
574
int MPV_encode_init(AVCodecContext *avctx);
575
int MPV_encode_end(AVCodecContext *avctx);
576
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
577
#ifdef HAVE_MMX
578
void MPV_common_init_mmx(MpegEncContext *s);
579
#endif
580
#ifdef ARCH_ALPHA
581
void MPV_common_init_axp(MpegEncContext *s);
582
#endif
583
#ifdef HAVE_MLIB
584
void MPV_common_init_mlib(MpegEncContext *s);
585
#endif
586
#ifdef HAVE_MMI
587
void MPV_common_init_mmi(MpegEncContext *s);
588
#endif
589
#ifdef ARCH_ARMV4L
590
void MPV_common_init_armv4l(MpegEncContext *s);
591
#endif
592
#ifdef ARCH_POWERPC
593
void MPV_common_init_ppc(MpegEncContext *s);
594
#endif
595
extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
596
void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
597
void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
598
void ff_clean_intra_table_entries(MpegEncContext *s);
599
void ff_init_scantable(MpegEncContext *s, ScanTable *st, const uint8_t *src_scantable);
600
void ff_error_resilience(MpegEncContext *s);
601
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
602
void ff_emulated_edge_mc(MpegEncContext *s, uint8_t *src, int linesize, int block_w, int block_h, 
603
                                    int src_x, int src_y, int w, int h);
604
char ff_get_pict_type_char(int pict_type);
605
int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
606

    
607
extern enum PixelFormat ff_yuv420p_list[2];
608

    
609
static inline void ff_init_block_index(MpegEncContext *s){
610
    s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
611
    s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1)     + s->mb_x*2;
612
    s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
613
    s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2)     + s->mb_x*2;
614
    s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
615
    s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
616
}
617

    
618
static inline void ff_update_block_index(MpegEncContext *s){
619
    s->block_index[0]+=2;
620
    s->block_index[1]+=2;
621
    s->block_index[2]+=2;
622
    s->block_index[3]+=2;
623
    s->block_index[4]++;
624
    s->block_index[5]++;
625
}
626

    
627

    
628
/* motion_est.c */
629
void ff_estimate_p_frame_motion(MpegEncContext * s,
630
                             int mb_x, int mb_y);
631
void ff_estimate_b_frame_motion(MpegEncContext * s,
632
                             int mb_x, int mb_y);
633
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
634
void ff_fix_long_p_mvs(MpegEncContext * s);
635
void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
636
void ff_init_me(MpegEncContext *s);
637
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
638

    
639

    
640
/* mpeg12.c */
641
extern const int16_t ff_mpeg1_default_intra_matrix[64];
642
extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
643
extern uint8_t ff_mpeg1_dc_scale_table[128];
644

    
645
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
646
void mpeg1_encode_mb(MpegEncContext *s,
647
                     DCTELEM block[6][64],
648
                     int motion_x, int motion_y);
649
void ff_mpeg1_encode_init(MpegEncContext *s);
650

    
651

    
652
/* h263enc.c */
653
typedef struct RLTable {
654
    int n; /* number of entries of table_vlc minus 1 */
655
    int last; /* number of values for last = 0 */
656
    const uint16_t (*table_vlc)[2];
657
    const int8_t *table_run;
658
    const int8_t *table_level;
659
    uint8_t *index_run[2]; /* encoding only */
660
    int8_t *max_level[2]; /* encoding & decoding */
661
    int8_t *max_run[2];   /* encoding & decoding */
662
    VLC vlc;            /* decoding only deprected FIXME remove*/
663
    RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
664
} RLTable;
665

    
666
void init_rl(RLTable *rl);
667
void init_vlc_rl(RLTable *rl);
668

    
669
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
670
{
671
    int index;
672
    index = rl->index_run[last][run];
673
    if (index >= rl->n)
674
        return rl->n;
675
    if (level > rl->max_level[last][run])
676
        return rl->n;
677
    return index + level - 1;
678
}
679

    
680
extern uint8_t ff_mpeg4_y_dc_scale_table[32];
681
extern uint8_t ff_mpeg4_c_dc_scale_table[32];
682
extern const int16_t ff_mpeg4_default_intra_matrix[64];
683
extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
684
int ff_h263_decode_init(AVCodecContext *avctx);
685
int ff_h263_decode_frame(AVCodecContext *avctx, 
686
                             void *data, int *data_size,
687
                             uint8_t *buf, int buf_size);
688
int ff_h263_decode_end(AVCodecContext *avctx);
689
void h263_encode_mb(MpegEncContext *s, 
690
                    DCTELEM block[6][64],
691
                    int motion_x, int motion_y);
692
void mpeg4_encode_mb(MpegEncContext *s, 
693
                    DCTELEM block[6][64],
694
                    int motion_x, int motion_y);
695
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
696
int h263_encode_gob_header(MpegEncContext * s, int mb_line);
697
int16_t *h263_pred_motion(MpegEncContext * s, int block, 
698
                        int *px, int *py);
699
void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, 
700
                   int dir);
701
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
702
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
703
void h263_encode_init(MpegEncContext *s);
704
void h263_decode_init_vlc(MpegEncContext *s);
705
int h263_decode_picture_header(MpegEncContext *s);
706
int ff_h263_decode_gob_header(MpegEncContext *s);
707
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
708

    
709

    
710
int intel_h263_decode_picture_header(MpegEncContext *s);
711
int ff_h263_decode_mb(MpegEncContext *s,
712
                      DCTELEM block[6][64]);
713
int h263_get_picture_format(int width, int height);
714
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
715
void ff_mpeg4_clean_buffers(MpegEncContext *s);
716
void ff_mpeg4_stuffing(PutBitContext * pbc);
717
void ff_mpeg4_init_partitions(MpegEncContext *s);
718
void ff_mpeg4_merge_partitions(MpegEncContext *s);
719
void ff_clean_mpeg4_qscales(MpegEncContext *s);
720
void ff_clean_h263_qscales(MpegEncContext *s);
721
int ff_mpeg4_decode_partitions(MpegEncContext *s);
722
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
723
int ff_h263_resync(MpegEncContext *s);
724
int ff_h263_get_gob_height(MpegEncContext *s);
725
void ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
726
inline int ff_h263_round_chroma(int x);
727

    
728

    
729
/* rv10.c */
730
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
731
int rv_decode_dc(MpegEncContext *s, int n);
732

    
733

    
734
/* msmpeg4.c */
735
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
736
void msmpeg4_encode_ext_header(MpegEncContext * s);
737
void msmpeg4_encode_mb(MpegEncContext * s, 
738
                       DCTELEM block[6][64],
739
                       int motion_x, int motion_y);
740
int msmpeg4_decode_picture_header(MpegEncContext * s);
741
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
742
int ff_msmpeg4_decode_init(MpegEncContext *s);
743
void ff_msmpeg4_encode_init(MpegEncContext *s);
744
int ff_wmv2_decode_picture_header(MpegEncContext * s);
745
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
746
void ff_mspel_motion(MpegEncContext *s,
747
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
748
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
749
                               int motion_x, int motion_y, int h);
750
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
751
void ff_wmv2_encode_mb(MpegEncContext * s, 
752
                       DCTELEM block[6][64],
753
                       int motion_x, int motion_y);
754

    
755
/* mjpegenc.c */
756
int mjpeg_init(MpegEncContext *s);
757
void mjpeg_close(MpegEncContext *s);
758
void mjpeg_encode_mb(MpegEncContext *s, 
759
                     DCTELEM block[6][64]);
760
void mjpeg_picture_header(MpegEncContext *s);
761
void mjpeg_picture_trailer(MpegEncContext *s);
762

    
763

    
764
/* rate control */
765
int ff_rate_control_init(MpegEncContext *s);
766
float ff_rate_estimate_qscale(MpegEncContext *s);
767
void ff_write_pass1_stats(MpegEncContext *s);
768
void ff_rate_control_uninit(MpegEncContext *s);
769
double ff_eval(char *s, double *const_value, const char **const_name,
770
               double (**func1)(void *, double), const char **func1_name,
771
               double (**func2)(void *, double, double), char **func2_name,
772
               void *opaque);
773

    
774

    
775
#endif /* AVCODEC_MPEGVIDEO_H */