LCOV - code coverage report
Current view: top level - libavcodec - mpegvideo.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 17 17 100.0 %
Date: 2017-12-18 06:23:41 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Generic DCT based hybrid video encoder
       3             :  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
       4             :  * Copyright (c) 2002-2004 Michael Niedermayer
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       8             :  * FFmpeg is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public
      10             :  * License as published by the Free Software Foundation; either
      11             :  * version 2.1 of the License, or (at your option) any later version.
      12             :  *
      13             :  * FFmpeg is distributed in the hope that it will be useful,
      14             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public
      19             :  * License along with FFmpeg; if not, write to the Free Software
      20             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      21             :  */
      22             : 
      23             : /**
      24             :  * @file
      25             :  * mpegvideo header.
      26             :  */
      27             : 
      28             : #ifndef AVCODEC_MPEGVIDEO_H
      29             : #define AVCODEC_MPEGVIDEO_H
      30             : 
      31             : #include <float.h>
      32             : 
      33             : #include "avcodec.h"
      34             : #include "blockdsp.h"
      35             : #include "error_resilience.h"
      36             : #include "fdctdsp.h"
      37             : #include "get_bits.h"
      38             : #include "h264chroma.h"
      39             : #include "h263dsp.h"
      40             : #include "hpeldsp.h"
      41             : #include "idctdsp.h"
      42             : #include "internal.h"
      43             : #include "me_cmp.h"
      44             : #include "motion_est.h"
      45             : #include "mpegpicture.h"
      46             : #include "mpegvideodsp.h"
      47             : #include "mpegvideoencdsp.h"
      48             : #include "pixblockdsp.h"
      49             : #include "put_bits.h"
      50             : #include "ratecontrol.h"
      51             : #include "parser.h"
      52             : #include "mpegutils.h"
      53             : #include "mpeg12data.h"
      54             : #include "qpeldsp.h"
      55             : #include "thread.h"
      56             : #include "videodsp.h"
      57             : 
      58             : #include "libavutil/opt.h"
      59             : #include "libavutil/timecode.h"
      60             : 
      61             : #define MAX_THREADS 32
      62             : 
      63             : #define MAX_B_FRAMES 16
      64             : 
      65             : /* Start codes. */
      66             : #define SEQ_END_CODE            0x000001b7
      67             : #define SEQ_START_CODE          0x000001b3
      68             : #define GOP_START_CODE          0x000001b8
      69             : #define PICTURE_START_CODE      0x00000100
      70             : #define SLICE_MIN_START_CODE    0x00000101
      71             : #define SLICE_MAX_START_CODE    0x000001af
      72             : #define EXT_START_CODE          0x000001b5
      73             : #define USER_START_CODE         0x000001b2
      74             : 
      75             : /**
      76             :  * MpegEncContext.
      77             :  */
      78             : typedef struct MpegEncContext {
      79             :     AVClass *class;
      80             : 
      81             :     int y_dc_scale, c_dc_scale;
      82             :     int ac_pred;
      83             :     int block_last_index[12];  ///< last non zero coefficient in block
      84             :     int h263_aic;              ///< Advanced INTRA Coding (AIC)
      85             : 
      86             :     /* scantables */
      87             :     ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce the cache usage
      88             :     ScanTable intra_scantable;
      89             :     ScanTable intra_h_scantable;
      90             :     ScanTable intra_v_scantable;
      91             : 
      92             :     /* WARNING: changes above this line require updates to hardcoded
      93             :      *          offsets used in ASM. */
      94             : 
      95             :     struct AVCodecContext *avctx;
      96             :     /* the following parameters must be initialized before encoding */
      97             :     int width, height;///< picture size. must be a multiple of 16
      98             :     int gop_size;
      99             :     int intra_only;   ///< if true, only intra pictures are generated
     100             :     int64_t bit_rate; ///< wanted bit rate
     101             :     enum OutputFormat out_format; ///< output format
     102             :     int h263_pred;    ///< use MPEG-4/H.263 ac/dc predictions
     103             :     int pb_frame;     ///< PB-frame mode (0 = none, 1 = base, 2 = improved)
     104             : 
     105             : /* the following codec id fields are deprecated in favor of codec_id */
     106             :     int h263_plus;    ///< H.263+ headers
     107             :     int h263_flv;     ///< use flv H.263 header
     108             : 
     109             :     enum AVCodecID codec_id;     /* see AV_CODEC_ID_xxx */
     110             :     int fixed_qscale; ///< fixed qscale if non zero
     111             :     int encoding;     ///< true if we are encoding (vs decoding)
     112             :     int max_b_frames; ///< max number of B-frames for encoding
     113             :     int luma_elim_threshold;
     114             :     int chroma_elim_threshold;
     115             :     int strict_std_compliance; ///< strictly follow the std (MPEG-4, ...)
     116             :     int workaround_bugs;       ///< workaround bugs in encoders which cannot be detected automatically
     117             :     int codec_tag;             ///< internal codec_tag upper case converted from avctx codec_tag
     118             :     /* the following fields are managed internally by the encoder */
     119             : 
     120             :     /* sequence parameters */
     121             :     int context_initialized;
     122             :     int input_picture_number;  ///< used to set pic->display_picture_number, should not be used for/by anything else
     123             :     int coded_picture_number;  ///< used to set pic->coded_picture_number, should not be used for/by anything else
     124             :     int picture_number;       //FIXME remove, unclear definition
     125             :     int picture_in_gop_number; ///< 0-> first pic in gop, ...
     126             :     int mb_width, mb_height;   ///< number of MBs horizontally & vertically
     127             :     int mb_stride;             ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
     128             :     int b8_stride;             ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
     129             :     int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
     130             :     int mb_num;                ///< number of MBs of a picture
     131             :     ptrdiff_t linesize;        ///< line size, in bytes, may be different from width
     132             :     ptrdiff_t uvlinesize;      ///< line size, for chroma in bytes, may be different from width
     133             :     Picture *picture;          ///< main picture buffer
     134             :     Picture **input_picture;   ///< next pictures on display order for encoding
     135             :     Picture **reordered_input_picture; ///< pointer to the next pictures in coded order for encoding
     136             : 
     137             :     int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
     138             :     /**
     139             :      * pts difference between the first and second input frame, used for
     140             :      * calculating dts of the first frame when there's a delay */
     141             :     int64_t dts_delta;
     142             :     /**
     143             :      * reordered pts to be used as dts for the next output frame when there's
     144             :      * a delay */
     145             :     int64_t reordered_pts;
     146             : 
     147             :     /** bit output */
     148             :     PutBitContext pb;
     149             : 
     150             :     int start_mb_y;            ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
     151             :     int end_mb_y;              ///< end   mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
     152             :     struct MpegEncContext *thread_context[MAX_THREADS];
     153             :     int slice_context_count;   ///< number of used thread_contexts
     154             : 
     155             :     /**
     156             :      * copy of the previous picture structure.
     157             :      * note, linesize & data, might not match the previous picture (for field pictures)
     158             :      */
     159             :     Picture last_picture;
     160             : 
     161             :     /**
     162             :      * copy of the next picture structure.
     163             :      * note, linesize & data, might not match the next picture (for field pictures)
     164             :      */
     165             :     Picture next_picture;
     166             : 
     167             :     /**
     168             :      * copy of the source picture structure for encoding.
     169             :      * note, linesize & data, might not match the source picture (for field pictures)
     170             :      */
     171             :     Picture new_picture;
     172             : 
     173             :     /**
     174             :      * copy of the current picture structure.
     175             :      * note, linesize & data, might not match the current picture (for field pictures)
     176             :      */
     177             :     Picture current_picture;    ///< buffer to store the decompressed current picture
     178             : 
     179             :     Picture *last_picture_ptr;     ///< pointer to the previous picture.
     180             :     Picture *next_picture_ptr;     ///< pointer to the next picture (for bidir pred)
     181             :     Picture *current_picture_ptr;  ///< pointer to the current picture
     182             :     int last_dc[3];                ///< last DC values for MPEG-1
     183             :     int16_t *dc_val_base;
     184             :     int16_t *dc_val[3];            ///< used for MPEG-4 DC prediction, all 3 arrays must be continuous
     185             :     const uint8_t *y_dc_scale_table;     ///< qscale -> y_dc_scale table
     186             :     const uint8_t *c_dc_scale_table;     ///< qscale -> c_dc_scale table
     187             :     const uint8_t *chroma_qscale_table;  ///< qscale -> chroma_qscale (H.263)
     188             :     uint8_t *coded_block_base;
     189             :     uint8_t *coded_block;          ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
     190             :     int16_t (*ac_val_base)[16];
     191             :     int16_t (*ac_val[3])[16];      ///< used for MPEG-4 AC prediction, all 3 arrays must be continuous
     192             :     int mb_skipped;                ///< MUST BE SET only during DECODING
     193             :     uint8_t *mbskip_table;        /**< used to avoid copy if macroblock skipped (for black regions for example)
     194             :                                    and used for B-frame encoding & decoding (contains skip table of next P-frame) */
     195             :     uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
     196             :     uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding
     197             :     uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding
     198             : 
     199             :     ScratchpadContext sc;
     200             : 
     201             :     int qscale;                 ///< QP
     202             :     int chroma_qscale;          ///< chroma QP
     203             :     unsigned int lambda;        ///< Lagrange multiplier used in rate distortion
     204             :     unsigned int lambda2;       ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
     205             :     int *lambda_table;
     206             :     int adaptive_quant;         ///< use adaptive quantization
     207             :     int dquant;                 ///< qscale difference to prev qscale
     208             :     int closed_gop;             ///< MPEG1/2 GOP is closed
     209             :     int pict_type;              ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
     210             :     int vbv_delay;
     211             :     int last_pict_type; //FIXME removes
     212             :     int last_non_b_pict_type;   ///< used for MPEG-4 gmc B-frames & ratecontrol
     213             :     int droppable;
     214             :     int frame_rate_index;
     215             :     AVRational mpeg2_frame_rate_ext;
     216             :     int last_lambda_for[5];     ///< last lambda for a specific pict type
     217             :     int skipdct;                ///< skip dct and code zero residual
     218             : 
     219             :     /* motion compensation */
     220             :     int unrestricted_mv;        ///< mv can point outside of the coded picture
     221             :     int h263_long_vectors;      ///< use horrible H.263v1 long vector mode
     222             : 
     223             :     BlockDSPContext bdsp;
     224             :     FDCTDSPContext fdsp;
     225             :     H264ChromaContext h264chroma;
     226             :     HpelDSPContext hdsp;
     227             :     IDCTDSPContext idsp;
     228             :     MECmpContext mecc;
     229             :     MpegVideoDSPContext mdsp;
     230             :     MpegvideoEncDSPContext mpvencdsp;
     231             :     PixblockDSPContext pdsp;
     232             :     QpelDSPContext qdsp;
     233             :     VideoDSPContext vdsp;
     234             :     H263DSPContext h263dsp;
     235             :     int f_code;                 ///< forward MV resolution
     236             :     int b_code;                 ///< backward MV resolution for B-frames (MPEG-4)
     237             :     int16_t (*p_mv_table_base)[2];
     238             :     int16_t (*b_forw_mv_table_base)[2];
     239             :     int16_t (*b_back_mv_table_base)[2];
     240             :     int16_t (*b_bidir_forw_mv_table_base)[2];
     241             :     int16_t (*b_bidir_back_mv_table_base)[2];
     242             :     int16_t (*b_direct_mv_table_base)[2];
     243             :     int16_t (*p_field_mv_table_base[2][2])[2];
     244             :     int16_t (*b_field_mv_table_base[2][2][2])[2];
     245             :     int16_t (*p_mv_table)[2];            ///< MV table (1MV per MB) P-frame encoding
     246             :     int16_t (*b_forw_mv_table)[2];       ///< MV table (1MV per MB) forward mode B-frame encoding
     247             :     int16_t (*b_back_mv_table)[2];       ///< MV table (1MV per MB) backward mode B-frame encoding
     248             :     int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
     249             :     int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
     250             :     int16_t (*b_direct_mv_table)[2];     ///< MV table (1MV per MB) direct mode B-frame encoding
     251             :     int16_t (*p_field_mv_table[2][2])[2];   ///< MV table (2MV per MB) interlaced P-frame encoding
     252             :     int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame encoding
     253             :     uint8_t (*p_field_select_table[2]);
     254             :     uint8_t (*b_field_select_table[2][2]);
     255             :     int motion_est;                      ///< ME algorithm
     256             :     int me_penalty_compensation;
     257             :     int me_pre;                          ///< prepass for motion estimation
     258             :     int mv_dir;
     259             : #define MV_DIR_FORWARD   1
     260             : #define MV_DIR_BACKWARD  2
     261             : #define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4)
     262             :     int mv_type;
     263             : #define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
     264             : #define MV_TYPE_8X8         1   ///< 4 vectors (H.263, MPEG-4 4MV)
     265             : #define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
     266             : #define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
     267             : #define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
     268             :     /**motion vectors for a macroblock
     269             :        first coordinate : 0 = forward 1 = backward
     270             :        second "         : depend on type
     271             :        third  "         : 0 = x, 1 = y
     272             :     */
     273             :     int mv[2][4][2];
     274             :     int field_select[2][2];
     275             :     int last_mv[2][2][2];             ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
     276             :     uint8_t *fcode_tab;               ///< smallest fcode needed for each MV
     277             :     int16_t direct_scale_mv[2][64];   ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
     278             : 
     279             :     MotionEstContext me;
     280             : 
     281             :     int no_rounding;  /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
     282             :                         for B-frames rounding mode is always 0 */
     283             : 
     284             :     /* macroblock layer */
     285             :     int mb_x, mb_y;
     286             :     int mb_skip_run;
     287             :     int mb_intra;
     288             :     uint16_t *mb_type;  ///< Table for candidate MB types for encoding (defines in mpegutils.h)
     289             : 
     290             :     int block_index[6]; ///< index to current MB in block based arrays with edges
     291             :     int block_wrap[6];
     292             :     uint8_t *dest[3];
     293             : 
     294             :     int *mb_index2xy;        ///< mb_index -> mb_x + mb_y*mb_stride
     295             : 
     296             :     /** matrix transmitted in the bitstream */
     297             :     uint16_t intra_matrix[64];
     298             :     uint16_t chroma_intra_matrix[64];
     299             :     uint16_t inter_matrix[64];
     300             :     uint16_t chroma_inter_matrix[64];
     301             :     int force_duplicated_matrix; ///< Force duplication of mjpeg matrices, useful for rtp streaming
     302             : 
     303             :     int intra_quant_bias;    ///< bias for the quantizer
     304             :     int inter_quant_bias;    ///< bias for the quantizer
     305             :     int min_qcoeff;          ///< minimum encodable coefficient
     306             :     int max_qcoeff;          ///< maximum encodable coefficient
     307             :     int ac_esc_length;       ///< num of bits needed to encode the longest esc
     308             :     uint8_t *intra_ac_vlc_length;
     309             :     uint8_t *intra_ac_vlc_last_length;
     310             :     uint8_t *intra_chroma_ac_vlc_length;
     311             :     uint8_t *intra_chroma_ac_vlc_last_length;
     312             :     uint8_t *inter_ac_vlc_length;
     313             :     uint8_t *inter_ac_vlc_last_length;
     314             :     uint8_t *luma_dc_vlc_length;
     315             : #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
     316             : 
     317             :     int coded_score[12];
     318             : 
     319             :     /** precomputed matrix (combine qscale and DCT renorm) */
     320             :     int (*q_intra_matrix)[64];
     321             :     int (*q_chroma_intra_matrix)[64];
     322             :     int (*q_inter_matrix)[64];
     323             :     /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
     324             :     uint16_t (*q_intra_matrix16)[2][64];
     325             :     uint16_t (*q_chroma_intra_matrix16)[2][64];
     326             :     uint16_t (*q_inter_matrix16)[2][64];
     327             : 
     328             :     /* noise reduction */
     329             :     int (*dct_error_sum)[64];
     330             :     int dct_count[2];
     331             :     uint16_t (*dct_offset)[64];
     332             : 
     333             :     /* bit rate control */
     334             :     int64_t total_bits;
     335             :     int frame_bits;                ///< bits used for the current frame
     336             :     int stuffing_bits;             ///< bits used for stuffing
     337             :     int next_lambda;               ///< next lambda used for retrying to encode a frame
     338             :     RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
     339             : 
     340             :     /* statistics, used for 2-pass encoding */
     341             :     int mv_bits;
     342             :     int header_bits;
     343             :     int i_tex_bits;
     344             :     int p_tex_bits;
     345             :     int i_count;
     346             :     int f_count;
     347             :     int b_count;
     348             :     int skip_count;
     349             :     int misc_bits; ///< cbp, mb_type
     350             :     int last_bits; ///< temp var used for calculating the above vars
     351             : 
     352             :     /* error concealment / resync */
     353             :     int resync_mb_x;                 ///< x position of last resync marker
     354             :     int resync_mb_y;                 ///< y position of last resync marker
     355             :     GetBitContext last_resync_gb;    ///< used to search for the next resync marker
     356             :     int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
     357             :     int next_p_frame_damaged;        ///< set if the next p frame is damaged, to avoid showing trashed B-frames
     358             : 
     359             :     ParseContext parse_context;
     360             : 
     361             :     /* H.263 specific */
     362             :     int gob_index;
     363             :     int obmc;                       ///< overlapped block motion compensation
     364             :     int mb_info;                    ///< interval for outputting info about mb offsets as side data
     365             :     int prev_mb_info, last_mb_info;
     366             :     uint8_t *mb_info_ptr;
     367             :     int mb_info_size;
     368             :     int ehc_mode;
     369             :     int rc_strategy;
     370             : 
     371             :     /* H.263+ specific */
     372             :     int umvplus;                    ///< == H.263+ && unrestricted_mv
     373             :     int h263_aic_dir;               ///< AIC direction: 0 = left, 1 = top
     374             :     int h263_slice_structured;
     375             :     int alt_inter_vlc;              ///< alternative inter vlc
     376             :     int modified_quant;
     377             :     int loop_filter;
     378             :     int custom_pcf;
     379             : 
     380             :     /* MPEG-4 specific */
     381             :     ///< number of bits to represent the fractional part of time (encoder only)
     382             :     int time_increment_bits;
     383             :     int last_time_base;
     384             :     int time_base;                  ///< time in seconds of last I,P,S Frame
     385             :     int64_t time;                   ///< time of current frame
     386             :     int64_t last_non_b_time;
     387             :     uint16_t pp_time;               ///< time distance between the last 2 p,s,i frames
     388             :     uint16_t pb_time;               ///< time distance between the last b and p,s,i frame
     389             :     uint16_t pp_field_time;
     390             :     uint16_t pb_field_time;         ///< like above, just for interlaced
     391             :     int real_sprite_warping_points;
     392             :     int sprite_offset[2][2];         ///< sprite offset[isChroma][isMVY]
     393             :     int sprite_delta[2][2];          ///< sprite_delta [isY][isMVY]
     394             :     int mcsel;
     395             :     int quant_precision;
     396             :     int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC
     397             :     int aspect_ratio_info; //FIXME remove
     398             :     int sprite_warping_accuracy;
     399             :     int data_partitioning;           ///< data partitioning flag from header
     400             :     int partitioned_frame;           ///< is current frame partitioned
     401             :     int low_delay;                   ///< no reordering needed / has no B-frames
     402             :     int vo_type;
     403             :     PutBitContext tex_pb;            ///< used for data partitioned VOPs
     404             :     PutBitContext pb2;               ///< used for data partitioned VOPs
     405             :     int mpeg_quant;
     406             :     int padding_bug_score;             ///< used to detect the VERY common padding bug in MPEG-4
     407             : 
     408             :     /* divx specific, used to workaround (many) bugs in divx5 */
     409             :     int divx_packed;
     410             :     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
     411             :     int bitstream_buffer_size;
     412             :     unsigned int allocated_bitstream_buffer_size;
     413             : 
     414             :     /* RV10 specific */
     415             :     int rv10_version; ///< RV10 version: 0 or 3
     416             :     int rv10_first_dc_coded[3];
     417             : 
     418             :     /* MJPEG specific */
     419             :     struct MJpegContext *mjpeg_ctx;
     420             :     int esc_pos;
     421             :     int pred;
     422             :     int huffman;
     423             : 
     424             :     /* MSMPEG4 specific */
     425             :     int mv_table_index;
     426             :     int rl_table_index;
     427             :     int rl_chroma_table_index;
     428             :     int dc_table_index;
     429             :     int use_skip_mb_code;
     430             :     int slice_height;      ///< in macroblocks
     431             :     int first_slice_line;  ///< used in MPEG-4 too to handle resync markers
     432             :     int flipflop_rounding;
     433             :     int msmpeg4_version;   ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
     434             :     int per_mb_rl_table;
     435             :     int esc3_level_length;
     436             :     int esc3_run_length;
     437             :     /** [mb_intra][isChroma][level][run][last] */
     438             :     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
     439             :     int inter_intra_pred;
     440             :     int mspel;
     441             : 
     442             :     /* decompression specific */
     443             :     GetBitContext gb;
     444             : 
     445             :     /* MPEG-1 specific */
     446             :     int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & MPEG-1 specific
     447             :     int last_mv_dir;         ///< last mv_dir, used for B-frame encoding
     448             :     uint8_t *vbv_delay_ptr;  ///< pointer to vbv_delay in the bitstream
     449             : 
     450             :     /* MPEG-2-specific - I wished not to have to support this mess. */
     451             :     int progressive_sequence;
     452             :     int mpeg_f_code[2][2];
     453             : 
     454             :     // picture structure defines are loaded from mpegutils.h
     455             :     int picture_structure;
     456             : 
     457             :     int64_t timecode_frame_start; ///< GOP timecode frame start number, in non drop frame format
     458             :     int intra_dc_precision;
     459             :     int frame_pred_frame_dct;
     460             :     int top_field_first;
     461             :     int concealment_motion_vectors;
     462             :     int q_scale_type;
     463             :     int brd_scale;
     464             :     int intra_vlc_format;
     465             :     int alternate_scan;
     466             :     int seq_disp_ext;
     467             :     int repeat_first_field;
     468             :     int chroma_420_type;
     469             :     int chroma_format;
     470             : #define CHROMA_420 1
     471             : #define CHROMA_422 2
     472             : #define CHROMA_444 3
     473             :     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
     474             :     int chroma_y_shift;
     475             : 
     476             :     int progressive_frame;
     477             :     int full_pel[2];
     478             :     int interlaced_dct;
     479             :     int first_field;         ///< is 1 for the first field of a field picture 0 otherwise
     480             :     int drop_frame_timecode; ///< timecode is in drop frame format.
     481             :     int scan_offset;         ///< reserve space for SVCD scan offset user data.
     482             : 
     483             :     /* RTP specific */
     484             :     int rtp_mode;
     485             :     int rtp_payload_size;
     486             : 
     487             :     char *tc_opt_str;        ///< timecode option string
     488             :     AVTimecode tc;           ///< timecode context
     489             : 
     490             :     uint8_t *ptr_lastgob;
     491             :     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
     492             :     int pack_pblocks;        //xvmc needs to keep blocks without gaps.
     493             :     int16_t (*pblocks[12])[64];
     494             : 
     495             :     int16_t (*block)[64]; ///< points to one of the following blocks
     496             :     int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
     497             :     int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
     498             : #define SLICE_OK         0
     499             : #define SLICE_ERROR     -1
     500             : #define SLICE_END       -2 ///<end marker found
     501             : #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
     502             : 
     503             :     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
     504             :                            int16_t *block/*align 16*/, int n, int qscale);
     505             :     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
     506             :                            int16_t *block/*align 16*/, int n, int qscale);
     507             :     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
     508             :                            int16_t *block/*align 16*/, int n, int qscale);
     509             :     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
     510             :                            int16_t *block/*align 16*/, int n, int qscale);
     511             :     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
     512             :                            int16_t *block/*align 16*/, int n, int qscale);
     513             :     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
     514             :                            int16_t *block/*align 16*/, int n, int qscale);
     515             :     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
     516             :                            int16_t *block/*align 16*/, int n, int qscale);
     517             :     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
     518             :                            int16_t *block/*align 16*/, int n, int qscale);
     519             :     int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
     520             :     int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
     521             :     void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
     522             : 
     523             :     int mpv_flags;      ///< flags set by private options
     524             :     int quantizer_noise_shaping;
     525             : 
     526             :     /**
     527             :      * ratecontrol qmin qmax limiting method
     528             :      * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
     529             :      */
     530             :     float rc_qsquish;
     531             :     float rc_qmod_amp;
     532             :     int   rc_qmod_freq;
     533             :     float rc_initial_cplx;
     534             :     float rc_buffer_aggressivity;
     535             :     float border_masking;
     536             :     int lmin, lmax;
     537             :     int vbv_ignore_qmax;
     538             : 
     539             :     char *rc_eq;
     540             : 
     541             :     /* temp buffers for rate control */
     542             :     float *cplx_tab, *bits_tab;
     543             : 
     544             :     /* flag to indicate a reinitialization is required, e.g. after
     545             :      * a frame size change */
     546             :     int context_reinit;
     547             : 
     548             :     ERContext er;
     549             : 
     550             :     int error_rate;
     551             : 
     552             :     /* temporary frames used by b_frame_strategy = 2 */
     553             :     AVFrame *tmp_frames[MAX_B_FRAMES + 2];
     554             :     int b_frame_strategy;
     555             :     int b_sensitivity;
     556             : 
     557             :     /* frame skip options for encoding */
     558             :     int frame_skip_threshold;
     559             :     int frame_skip_factor;
     560             :     int frame_skip_exp;
     561             :     int frame_skip_cmp;
     562             : 
     563             :     int scenechange_threshold;
     564             :     int noise_reduction;
     565             : } MpegEncContext;
     566             : 
     567             : /* mpegvideo_enc common options */
     568             : #define FF_MPV_FLAG_SKIP_RD      0x0001
     569             : #define FF_MPV_FLAG_STRICT_GOP   0x0002
     570             : #define FF_MPV_FLAG_QP_RD        0x0004
     571             : #define FF_MPV_FLAG_CBP_RD       0x0008
     572             : #define FF_MPV_FLAG_NAQ          0x0010
     573             : #define FF_MPV_FLAG_MV0          0x0020
     574             : 
     575             : enum rc_strategy {
     576             :     MPV_RC_STRATEGY_FFMPEG,
     577             :     MPV_RC_STRATEGY_XVID,
     578             :     NB_MPV_RC_STRATEGY
     579             : };
     580             : 
     581             : #define FF_MPV_OPT_CMP_FUNC \
     582             : { "sad",    "Sum of absolute differences, fast", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     583             : { "sse",    "Sum of squared errors", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     584             : { "satd",   "Sum of absolute Hadamard transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SATD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     585             : { "dct",    "Sum of absolute DCT transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     586             : { "psnr",   "Sum of squared quantization errors, low quality", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_PSNR }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     587             : { "bit",    "Number of bits needed for the block", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_BIT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     588             : { "rd",     "Rate distortion optimal, slow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_RD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     589             : { "zero",   "Zero", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_ZERO }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     590             : { "vsad",   "Sum of absolute vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     591             : { "vsse",   "Sum of squared vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     592             : { "nsse",   "Noise preserving sum of squared differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     593             : { "dct264", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT264 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     594             : { "dctmax", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     595             : { "chroma", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     596             : { "msad",   "Sum of absolute differences, median predicted", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_MEDIAN_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }
     597             : 
     598             : #ifndef FF_MPV_OFFSET
     599             : #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
     600             : #endif
     601             : #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
     602             : #define FF_MPV_COMMON_OPTS \
     603             : FF_MPV_OPT_CMP_FUNC, \
     604             : { "mpv_flags",      "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     605             : { "skip_rd",        "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD },    0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     606             : { "strict_gop",     "Strictly enforce gop size",             0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     607             : { "qp_rd",          "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD },  0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     608             : { "cbp_rd",         "use rate distortion optimization for CBP",          0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     609             : { "naq",            "normalize adaptive quantization",                   0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ },    0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     610             : { "mv0",            "always try a mb with mv=<0,0>",                     0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 },    0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
     611             : { "luma_elim_threshold",   "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
     612             :                                                                       FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
     613             : { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
     614             :                                                                       FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
     615             : { "quantizer_noise_shaping", NULL,                                  FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 },       0, INT_MAX, FF_MPV_OPT_FLAGS },\
     616             : { "error_rate", "Simulate errors in the bitstream to test error concealment.",                                                                                                  \
     617             :                                                                     FF_MPV_OFFSET(error_rate),              AV_OPT_TYPE_INT, { .i64 = 0 },       0, INT_MAX, FF_MPV_OPT_FLAGS },\
     618             : {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)",                                                                          \
     619             :                                                                     FF_MPV_OFFSET(rc_qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS},                        \
     620             : {"rc_qmod_amp", "experimental quantizer modulation",                FF_MPV_OFFSET(rc_qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS},           \
     621             : {"rc_qmod_freq", "experimental quantizer modulation",               FF_MPV_OFFSET(rc_qmod_freq), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS},             \
     622             : {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions "                                                                           \
     623             :           "defined in the section 'Expression Evaluation', the following functions are available: "                                                                             \
     624             :           "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv "                                                                           \
     625             :           "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.",                                                                         \
     626             :                                                                     FF_MPV_OFFSET(rc_eq), AV_OPT_TYPE_STRING,                           .flags = FF_MPV_OPT_FLAGS },            \
     627             : {"rc_init_cplx", "initial complexity for 1-pass encoding",          FF_MPV_OFFSET(rc_initial_cplx), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS},       \
     628             : {"rc_buf_aggressivity", "currently useless",                        FF_MPV_OFFSET(rc_buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
     629             : {"border_mask", "increase the quantizer for macroblocks close to borders", FF_MPV_OFFSET(border_masking), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS},    \
     630             : {"lmin", "minimum Lagrange factor (VBR)",                           FF_MPV_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 =  2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS },            \
     631             : {"lmax", "maximum Lagrange factor (VBR)",                           FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS },            \
     632             : {"ibias", "intra quant bias",                                       FF_MPV_OFFSET(intra_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },   \
     633             : {"pbias", "inter quant bias",                                       FF_MPV_OFFSET(inter_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },   \
     634             : {"rc_strategy", "ratecontrol method",                               FF_MPV_OFFSET(rc_strategy), AV_OPT_TYPE_INT, {.i64 = MPV_RC_STRATEGY_FFMPEG }, 0, NB_MPV_RC_STRATEGY-1, FF_MPV_OPT_FLAGS, "rc_strategy" },   \
     635             :     { "ffmpeg", "default native rate control", 0, AV_OPT_TYPE_CONST, { .i64 = MPV_RC_STRATEGY_FFMPEG }, 0, 0, FF_MPV_OPT_FLAGS, "rc_strategy" }, \
     636             :     { "xvid",   "libxvid (2 pass only)",       0, AV_OPT_TYPE_CONST, { .i64 = MPV_RC_STRATEGY_XVID },   0, 0, FF_MPV_OPT_FLAGS, "rc_strategy" }, \
     637             : {"motion_est", "motion estimation algorithm",                       FF_MPV_OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, "motion_est" },   \
     638             : { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
     639             : { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
     640             : { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
     641             : { "force_duplicated_matrix", "Always write luma and chroma matrix for mjpeg, useful for rtp streaming.", FF_MPV_OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS },   \
     642             : {"b_strategy", "Strategy to choose between I/P/B-frames",           FF_MPV_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
     643             : {"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1",       FF_MPV_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
     644             : {"brd_scale", "Downscale frames for dynamic B-frame decision",      FF_MPV_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS }, \
     645             : {"skip_threshold", "Frame skip threshold",                          FF_MPV_OFFSET(frame_skip_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     646             : {"skip_factor", "Frame skip factor",                                FF_MPV_OFFSET(frame_skip_factor), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     647             : {"skip_exp", "Frame skip exponent",                                 FF_MPV_OFFSET(frame_skip_exp), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     648             : {"skip_cmp", "Frame skip compare function",                         FF_MPV_OFFSET(frame_skip_cmp), AV_OPT_TYPE_INT, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
     649             : {"sc_threshold", "Scene change threshold",                          FF_MPV_OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     650             : {"noise_reduction", "Noise reduction",                              FF_MPV_OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     651             : {"mpeg_quant", "Use MPEG quantizers instead of H.263",              FF_MPV_OFFSET(mpeg_quant), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS }, \
     652             : {"ps", "RTP payload size in bytes",                             FF_MPV_OFFSET(rtp_payload_size), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     653             : {"mepc", "Motion estimation bitrate penalty compensation (1.0 = 256)", FF_MPV_OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     654             : {"mepre", "pre motion estimation", FF_MPV_OFFSET(me_pre), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
     655             : 
     656             : extern const AVOption ff_mpv_generic_options[];
     657             : 
     658             : /**
     659             :  * Set the given MpegEncContext to common defaults (same for encoding
     660             :  * and decoding).  The changed fields will not depend upon the prior
     661             :  * state of the MpegEncContext.
     662             :  */
     663             : void ff_mpv_common_defaults(MpegEncContext *s);
     664             : 
     665             : void ff_dct_encode_init_x86(MpegEncContext *s);
     666             : 
     667             : int ff_mpv_common_init(MpegEncContext *s);
     668             : void ff_mpv_common_init_arm(MpegEncContext *s);
     669             : void ff_mpv_common_init_axp(MpegEncContext *s);
     670             : void ff_mpv_common_init_neon(MpegEncContext *s);
     671             : void ff_mpv_common_init_ppc(MpegEncContext *s);
     672             : void ff_mpv_common_init_x86(MpegEncContext *s);
     673             : void ff_mpv_common_init_mips(MpegEncContext *s);
     674             : 
     675             : int ff_mpv_common_frame_size_change(MpegEncContext *s);
     676             : void ff_mpv_common_end(MpegEncContext *s);
     677             : 
     678             : void ff_mpv_decode_defaults(MpegEncContext *s);
     679             : void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
     680             : void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64]);
     681             : void ff_mpv_report_decode_progress(MpegEncContext *s);
     682             : 
     683             : int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
     684             : void ff_mpv_frame_end(MpegEncContext *s);
     685             : 
     686             : int ff_mpv_encode_init(AVCodecContext *avctx);
     687             : void ff_mpv_encode_init_x86(MpegEncContext *s);
     688             : 
     689             : int ff_mpv_encode_end(AVCodecContext *avctx);
     690             : int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
     691             :                           const AVFrame *frame, int *got_packet);
     692             : int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase);
     693             : 
     694             : void ff_clean_intra_table_entries(MpegEncContext *s);
     695             : void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
     696             : void ff_mpeg_flush(AVCodecContext *avctx);
     697             : 
     698             : void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
     699             : 
     700             : int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
     701             : 
     702             : void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
     703             : 
     704             : int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
     705             : int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
     706             : void ff_set_qscale(MpegEncContext * s, int qscale);
     707             : 
     708             : void ff_mpv_idct_init(MpegEncContext *s);
     709             : int ff_dct_encode_init(MpegEncContext *s);
     710             : void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
     711             :                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
     712             : int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
     713             : void ff_block_permute(int16_t *block, uint8_t *permutation,
     714             :                       const uint8_t *scantable, int last);
     715             : void ff_init_block_index(MpegEncContext *s);
     716             : 
     717             : void ff_mpv_motion(MpegEncContext *s,
     718             :                    uint8_t *dest_y, uint8_t *dest_cb,
     719             :                    uint8_t *dest_cr, int dir,
     720             :                    uint8_t **ref_picture,
     721             :                    op_pixels_func (*pix_op)[4],
     722             :                    qpel_mc_func (*qpix_op)[16]);
     723             : 
     724     6531518 : static inline void ff_update_block_index(MpegEncContext *s){
     725     6531518 :     const int block_size= 8 >> s->avctx->lowres;
     726             : 
     727     6531518 :     s->block_index[0]+=2;
     728     6531518 :     s->block_index[1]+=2;
     729     6531518 :     s->block_index[2]+=2;
     730     6531518 :     s->block_index[3]+=2;
     731     6531518 :     s->block_index[4]++;
     732     6531518 :     s->block_index[5]++;
     733     6531518 :     s->dest[0]+= 2*block_size;
     734     6531518 :     s->dest[1]+= block_size;
     735     6531518 :     s->dest[2]+= block_size;
     736     6531518 : }
     737             : 
     738     4985575 : static inline int get_bits_diff(MpegEncContext *s){
     739     4985575 :     const int bits= put_bits_count(&s->pb);
     740     4985575 :     const int last= s->last_bits;
     741             : 
     742     4985575 :     s->last_bits = bits;
     743             : 
     744     4985575 :     return bits - last;
     745             : }
     746             : 
     747             : #endif /* AVCODEC_MPEGVIDEO_H */

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