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ffmpeg / libavcodec / mpegvideo.h @ a33c7159

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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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#ifndef AVCODEC_MPEGVIDEO_H
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#define AVCODEC_MPEGVIDEO_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 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 i_cplx_sum[5];
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    UINT64 p_cplx_sum[5];
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    UINT64 mv_bits_sum[5];
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    UINT64 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 *scantable;
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    UINT8 permutated[64];
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    UINT8 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 __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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    int b_frame_score;          /* */
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} Picture;
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typedef struct ParseContext{
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    UINT8 *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 pre_pass;                      /* = 1 for the pre pass */
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    int dia_size;
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    UINT16 (*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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}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 *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 *y_dc_scale_table;     /* qscale -> y_dc_scale table */
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    UINT8 *c_dc_scale_table;     /* qscale -> c_dc_scale table */
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    UINT8 *coded_block;          /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
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    INT16 (*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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    int mb_skiped;              /* MUST BE SET only during DECODING */
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    UINT8 *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 *mbintra_table;       /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
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    UINT8 *cbp_table;           /* used to store cbp, ac_pred for partitioned decoding */
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    UINT8 *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;
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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 (*motion_val)[2];            /* used for MV prediction (4MV per MB) */
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    INT16 (*p_mv_table)[2];            /* MV table (1MV per MB) p-frame encoding */
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    INT16 (*b_forw_mv_table)[2];       /* MV table (1MV per MB) forward mode b-frame encoding */
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    INT16 (*b_back_mv_table)[2];       /* MV table (1MV per MB) backward mode b-frame encoding */
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    INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
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    INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
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    INT16 (*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 *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 *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 intra_matrix[64];
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    UINT16 chroma_intra_matrix[64];
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    UINT16 inter_matrix[64];
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    UINT16 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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#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 __align8 q_intra_matrix16[32][64];
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    UINT16 __align8 q_inter_matrix16[32][64];
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    UINT16 __align8 q_intra_matrix16_bias[32][64];
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    UINT16 __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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    UINT8 idct_permutation[64];
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    int idct_permutation_type;
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#define FF_NO_IDCT_PERM 1
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#define FF_LIBMPEG2_IDCT_PERM 2
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#define FF_SIMPLE_IDCT_PERM 3
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#define FF_TRANSPOSE_IDCT_PERM 4
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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 wanted_bits;
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    INT64 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 *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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    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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386
    ParseContext parse_context;
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    /* H.263 specific */
389
    int gob_number;
390
    int gob_index;
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392
    /* H.263+ specific */
393
    int umvplus;
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    int umvplus_dec;
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    int h263_aic; /* Advanded INTRA Coding (AIC) */
396
    int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
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398
    /* mpeg4 specific */
399
    int time_increment_resolution;
400
    int time_increment_bits;        /* number of bits to represent the fractional part of time */
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    int last_time_base;
402
    int time_base;                  /* time in seconds of last I,P,S Frame */
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    INT64 time;                   /* time of current frame */ 
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    INT64 last_non_b_time;
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    UINT16 pp_time;               /* time distance between the last 2 p,s,i frames */
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    UINT16 pb_time;               /* time distance between the last b and p,s,i frame */
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    UINT16 pp_field_time;
408
    UINT16 pb_field_time;         /* like above, just for interlaced */
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    int shape;
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    int vol_sprite_usage;
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    int sprite_width;
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    int sprite_height;
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    int sprite_left;
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    int sprite_top;
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    int sprite_brightness_change;
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    int num_sprite_warping_points;
417
    int real_sprite_warping_points;
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    int sprite_offset[2][2];         /* sprite offset[isChroma][isMVY] */
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    int sprite_delta[2][2];          /* sprite_delta [isY][isMVY] */ 
420
    int sprite_shift[2];             /* sprite shift [isChroma] */
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    int mcsel;
422
    int quant_precision;
423
    int quarter_sample;              /* 1->qpel, 0->half pel ME/MC */ 
424
    int scalability;
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    int hierachy_type;
426
    int enhancement_type;
427
    int new_pred;
428
    int reduced_res_vop;
429
    int aspect_ratio_info;
430
    int aspected_width;
431
    int aspected_height;
432
    int sprite_warping_accuracy;
433
    int low_latency_sprite;
434
    int data_partitioning;           /* data partitioning flag from header */
435
    int partitioned_frame;           /* is current frame partitioned */
436
    int rvlc;                        /* reversible vlc */
437
    int resync_marker;               /* could this stream contain resync markers*/
438
    int low_delay;                   /* no reordering needed / has no b-frames */
439
    int vo_type;
440
    int vol_control_parameters;      /* does the stream contain the low_delay flag, used to workaround buggy encoders */
441
    PutBitContext tex_pb;            /* used for data partitioned VOPs */
442
    PutBitContext pb2;               /* used for data partitioned VOPs */
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#define PB_BUFFER_SIZE 1024*256
444
    uint8_t *tex_pb_buffer;          
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    uint8_t *pb2_buffer;
446
    int mpeg_quant;
447
#define CO_LOCATED_TYPE_4MV     1
448
#define CO_LOCATED_TYPE_FIELDMV 2
449
    INT8 *co_located_type_table;     /* 4mv & field_mv info for next b frame */
450
    INT16 (*field_mv_table)[2][2];   /* used for interlaced b frame decoding */
451
    INT8 (*field_select_table)[2];   /* wtf, no really another table for interlaced b frames */
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    int t_frame;                     /* time distance of first I -> B, used for interlaced b frames */
453
    int padding_bug_score;           /* used to detect the VERY common padding bug in MPEG4 */
454

    
455
    /* divx specific, used to workaround (many) bugs in divx5 */
456
    int divx_version;
457
    int divx_build;
458
#define BITSTREAM_BUFFER_SIZE 1024*256
459
    UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
460
    int bitstream_buffer_size;
461
    
462
    int xvid_build;
463
    
464
    /* lavc specific stuff, used to workaround bugs in libavcodec */
465
    int ffmpeg_version;
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    int lavc_build;
467
    
468
    /* RV10 specific */
469
    int rv10_version; /* RV10 version: 0 or 3 */
470
    int rv10_first_dc_coded[3];
471
    
472
    /* MJPEG specific */
473
    struct MJpegContext *mjpeg_ctx;
474
    int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
475
    int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
476
    int mjpeg_write_tables; /* do we want to have quantisation- and
477
                               huffmantables in the jpeg file ? */
478
    int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
479

    
480
    /* MSMPEG4 specific */
481
    int mv_table_index;
482
    int rl_table_index;
483
    int rl_chroma_table_index;
484
    int dc_table_index;
485
    int use_skip_mb_code;
486
    int slice_height;      /* in macroblocks */
487
    int first_slice_line;  /* used in mpeg4 too to handle resync markers */
488
    int flipflop_rounding;
489
    int msmpeg4_version;   /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
490
    int per_mb_rl_table;
491
    int esc3_level_length;
492
    int esc3_run_length;
493
    /* [mb_intra][isChroma][level][run][last] */
494
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
495
    int inter_intra_pred;
496
    int mspel;
497

    
498
    /* decompression specific */
499
    GetBitContext gb;
500

    
501
    /* Mpeg1 specific */
502
    int fake_picture_number; /* picture number at the bitstream frame rate */
503
    int gop_picture_number;  /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
504
    
505
    /* MPEG2 specific - I wish I had not to support this mess. */
506
    int progressive_sequence;
507
    int mpeg_f_code[2][2];
508
    int picture_structure;
509
/* picture type */
510
#define PICT_TOP_FIELD     1
511
#define PICT_BOTTOM_FIELD  2
512
#define PICT_FRAME         3
513

    
514
    int intra_dc_precision;
515
    int frame_pred_frame_dct;
516
    int top_field_first;
517
    int concealment_motion_vectors;
518
    int q_scale_type;
519
    int intra_vlc_format;
520
    int alternate_scan;
521
    int repeat_first_field;
522
    int chroma_420_type;
523
    int progressive_frame;
524
    int mpeg2;
525
    int full_pel[2];
526
    int interlaced_dct;
527
    int first_slice;
528
    
529
    /* RTP specific */
530
    /* These are explained on avcodec.h */
531
    int rtp_mode;
532
    int rtp_payload_size;
533
    void (*rtp_callback)(void *data, int size, int packet_number);
534
    UINT8 *ptr_lastgob;
535
    UINT8 *ptr_last_mb_line;
536
    UINT32 mb_line_avgsize;
537
    
538
    DCTELEM (*block)[64]; /* points to one of the following blocks */
539
    DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
540
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
541
#define SLICE_OK         0
542
#define SLICE_ERROR     -1
543
#define SLICE_END       -2 //end marker found
544
#define SLICE_NOEND     -3 //no end marker or error found but mb count exceeded
545
    
546
    void (*dct_unquantize_mpeg1)(struct MpegEncContext *s, 
547
                           DCTELEM *block, int n, int qscale);
548
    void (*dct_unquantize_mpeg2)(struct MpegEncContext *s, 
549
                           DCTELEM *block, int n, int qscale);
550
    void (*dct_unquantize_h263)(struct MpegEncContext *s, 
551
                           DCTELEM *block, int n, int qscale);
552
    void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
553
                           DCTELEM *block, int n, int qscale);
554
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
555
    void (*fdct)(DCTELEM *block/* align 16*/);
556
    void (*idct_put)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
557
    void (*idct_add)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
558
    //FIXME move above funcs into dspContext perhaps
559
} MpegEncContext;
560

    
561

    
562
int DCT_common_init(MpegEncContext *s);
563
int MPV_common_init(MpegEncContext *s);
564
void MPV_common_end(MpegEncContext *s);
565
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
566
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
567
void MPV_frame_end(MpegEncContext *s);
568
int MPV_encode_init(AVCodecContext *avctx);
569
int MPV_encode_end(AVCodecContext *avctx);
570
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
571
#ifdef HAVE_MMX
572
void MPV_common_init_mmx(MpegEncContext *s);
573
#endif
574
#ifdef ARCH_ALPHA
575
void MPV_common_init_axp(MpegEncContext *s);
576
#endif
577
#ifdef HAVE_MLIB
578
void MPV_common_init_mlib(MpegEncContext *s);
579
#endif
580
#ifdef HAVE_MMI
581
void MPV_common_init_mmi(MpegEncContext *s);
582
#endif
583
#ifdef ARCH_ARMV4L
584
void MPV_common_init_armv4l(MpegEncContext *s);
585
#endif
586
#ifdef ARCH_POWERPC
587
void MPV_common_init_ppc(MpegEncContext *s);
588
#endif
589
extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
590
void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
591
void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
592
void ff_clean_intra_table_entries(MpegEncContext *s);
593
void ff_init_scantable(MpegEncContext *s, ScanTable *st, const UINT8 *src_scantable);
594
void ff_error_resilience(MpegEncContext *s);
595
void ff_draw_horiz_band(MpegEncContext *s);
596
void ff_emulated_edge_mc(MpegEncContext *s, UINT8 *src, int linesize, int block_w, int block_h, 
597
                                    int src_x, int src_y, int w, int h);
598
char ff_get_pict_type_char(int pict_type);
599

    
600
extern enum PixelFormat ff_yuv420p_list[2];
601

    
602
extern int ff_bit_exact;
603

    
604
static inline void ff_init_block_index(MpegEncContext *s){
605
    s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
606
    s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1)     + s->mb_x*2;
607
    s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
608
    s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2)     + s->mb_x*2;
609
    s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
610
    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;
611
}
612

    
613
static inline void ff_update_block_index(MpegEncContext *s){
614
    s->block_index[0]+=2;
615
    s->block_index[1]+=2;
616
    s->block_index[2]+=2;
617
    s->block_index[3]+=2;
618
    s->block_index[4]++;
619
    s->block_index[5]++;
620
}
621

    
622

    
623
/* motion_est.c */
624
void ff_estimate_p_frame_motion(MpegEncContext * s,
625
                             int mb_x, int mb_y);
626
void ff_estimate_b_frame_motion(MpegEncContext * s,
627
                             int mb_x, int mb_y);
628
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
629
void ff_fix_long_p_mvs(MpegEncContext * s);
630
void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
631
void ff_init_me(MpegEncContext *s);
632
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
633

    
634

    
635
/* mpeg12.c */
636
extern const INT16 ff_mpeg1_default_intra_matrix[64];
637
extern const INT16 ff_mpeg1_default_non_intra_matrix[64];
638
extern UINT8 ff_mpeg1_dc_scale_table[128];
639

    
640
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
641
void mpeg1_encode_mb(MpegEncContext *s,
642
                     DCTELEM block[6][64],
643
                     int motion_x, int motion_y);
644
void ff_mpeg1_encode_init(MpegEncContext *s);
645

    
646

    
647
/* h263enc.c */
648
typedef struct RLTable {
649
    int n; /* number of entries of table_vlc minus 1 */
650
    int last; /* number of values for last = 0 */
651
    const UINT16 (*table_vlc)[2];
652
    const INT8 *table_run;
653
    const INT8 *table_level;
654
    UINT8 *index_run[2]; /* encoding only */
655
    INT8 *max_level[2]; /* encoding & decoding */
656
    INT8 *max_run[2];   /* encoding & decoding */
657
    VLC vlc;            /* decoding only deprected FIXME remove*/
658
    RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
659
} RLTable;
660

    
661
void init_rl(RLTable *rl);
662
void init_vlc_rl(RLTable *rl);
663

    
664
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
665
{
666
    int index;
667
    index = rl->index_run[last][run];
668
    if (index >= rl->n)
669
        return rl->n;
670
    if (level > rl->max_level[last][run])
671
        return rl->n;
672
    return index + level - 1;
673
}
674

    
675
extern UINT8 ff_mpeg4_y_dc_scale_table[32];
676
extern UINT8 ff_mpeg4_c_dc_scale_table[32];
677
extern const INT16 ff_mpeg4_default_intra_matrix[64];
678
extern const INT16 ff_mpeg4_default_non_intra_matrix[64];
679
int ff_h263_decode_init(AVCodecContext *avctx);
680
int ff_h263_decode_frame(AVCodecContext *avctx, 
681
                             void *data, int *data_size,
682
                             UINT8 *buf, int buf_size);
683
int ff_h263_decode_end(AVCodecContext *avctx);
684
void h263_encode_mb(MpegEncContext *s, 
685
                    DCTELEM block[6][64],
686
                    int motion_x, int motion_y);
687
void mpeg4_encode_mb(MpegEncContext *s, 
688
                    DCTELEM block[6][64],
689
                    int motion_x, int motion_y);
690
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
691
int h263_encode_gob_header(MpegEncContext * s, int mb_line);
692
INT16 *h263_pred_motion(MpegEncContext * s, int block, 
693
                        int *px, int *py);
694
void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n, 
695
                   int dir);
696
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
697
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
698
void h263_encode_init(MpegEncContext *s);
699
void h263_decode_init_vlc(MpegEncContext *s);
700
int h263_decode_picture_header(MpegEncContext *s);
701
int ff_h263_decode_gob_header(MpegEncContext *s);
702
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
703

    
704

    
705
int intel_h263_decode_picture_header(MpegEncContext *s);
706
int ff_h263_decode_mb(MpegEncContext *s,
707
                      DCTELEM block[6][64]);
708
int h263_get_picture_format(int width, int height);
709
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
710
void ff_mpeg4_clean_buffers(MpegEncContext *s);
711
void ff_mpeg4_stuffing(PutBitContext * pbc);
712
void ff_mpeg4_init_partitions(MpegEncContext *s);
713
void ff_mpeg4_merge_partitions(MpegEncContext *s);
714
void ff_clean_mpeg4_qscales(MpegEncContext *s);
715
void ff_clean_h263_qscales(MpegEncContext *s);
716
int ff_mpeg4_decode_partitions(MpegEncContext *s);
717
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
718
int ff_h263_resync(MpegEncContext *s);
719
int ff_h263_get_gob_height(MpegEncContext *s);
720
void ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
721

    
722

    
723
/* rv10.c */
724
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
725
int rv_decode_dc(MpegEncContext *s, int n);
726

    
727

    
728
/* msmpeg4.c */
729
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
730
void msmpeg4_encode_ext_header(MpegEncContext * s);
731
void msmpeg4_encode_mb(MpegEncContext * s, 
732
                       DCTELEM block[6][64],
733
                       int motion_x, int motion_y);
734
int msmpeg4_decode_picture_header(MpegEncContext * s);
735
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
736
int ff_msmpeg4_decode_init(MpegEncContext *s);
737
void ff_msmpeg4_encode_init(MpegEncContext *s);
738
int ff_wmv2_decode_picture_header(MpegEncContext * s);
739
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
740
void ff_mspel_motion(MpegEncContext *s,
741
                               UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
742
                               UINT8 **ref_picture, op_pixels_func (*pix_op)[4],
743
                               int motion_x, int motion_y, int h);
744
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
745
void ff_wmv2_encode_mb(MpegEncContext * s, 
746
                       DCTELEM block[6][64],
747
                       int motion_x, int motion_y);
748

    
749
/* mjpegenc.c */
750
int mjpeg_init(MpegEncContext *s);
751
void mjpeg_close(MpegEncContext *s);
752
void mjpeg_encode_mb(MpegEncContext *s, 
753
                     DCTELEM block[6][64]);
754
void mjpeg_picture_header(MpegEncContext *s);
755
void mjpeg_picture_trailer(MpegEncContext *s);
756

    
757

    
758
/* rate control */
759
int ff_rate_control_init(MpegEncContext *s);
760
float ff_rate_estimate_qscale(MpegEncContext *s);
761
void ff_write_pass1_stats(MpegEncContext *s);
762
void ff_rate_control_uninit(MpegEncContext *s);
763
double ff_eval(char *s, double *const_value, char **const_name,
764
               double (**func1)(void *, double), char **func1_name, 
765
               double (**func2)(void *, double, double), char **func2_name,
766
               void *opaque);
767

    
768

    
769
#endif /* AVCODEC_MPEGVIDEO_H */