libavcodec/mpegvideo.h

   1 /*
   2  * Generic DCT based hybrid video encoder
   3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #ifndef AVCODEC_MPEGVIDEO_H
  21 #define AVCODEC_MPEGVIDEO_H
  22
  23 #define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
  24
  25 enum OutputFormat {
  26     FMT_MPEG1,
  27     FMT_H263,
  28     FMT_MJPEG,
  29 };
  30
  31 #define MPEG_BUF_SIZE (16 * 1024)
  32
  33 #define QMAT_SHIFT_MMX 16
  34 #define QMAT_SHIFT 22
  35
  36 #define MAX_FCODE 7
  37 #define MAX_MV 2048
  38 #define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
  39
  40 #define ME_MAP_SIZE 64
  41 #define ME_MAP_SHIFT 3
  42 #define ME_MAP_MV_BITS 11
  43
  44 /* run length table */
  45 #define MAX_RUN    64
  46 #define MAX_LEVEL  64
  47
  48 typedef struct Predictor{
  49     double coeff;
  50     double count;
  51     double decay;
  52 } Predictor;
  53
  54 typedef struct RateControlEntry{
  55     int pict_type;
  56     float qscale;
  57     int mv_bits;
  58     int i_tex_bits;
  59     int p_tex_bits;
  60     int misc_bits;
  61     UINT64 expected_bits;
  62     int new_pict_type;
  63     float new_qscale;
  64     int mc_mb_var_sum;
  65     int mb_var_sum;
  66     int i_count;
  67     int f_code;
  68     int b_code;
  69 }RateControlEntry;
  70
  71 typedef struct RateControlContext{
  72     FILE *stats_file;
  73     int num_entries;          /* number of RateControlEntries */
  74     RateControlEntry *entry;
  75     int buffer_index;         /* amount of bits in the video/audio buffer */
  76     Predictor pred[5];
  77     double short_term_qsum;   /* sum of recent qscales */
  78     double short_term_qcount; /* count of recent qscales */
  79     double pass1_rc_eq_output_sum;/* sum of the output of the rc equation, this is used for normalization  */
  80     double pass1_wanted_bits; /* bits which should have been outputed by the pass1 code (including complexity init) */
  81     double last_qscale;
  82     double last_qscale_for[5]; /* last qscale for a specific pict type, used for max_diff & ipb factor stuff */
  83     int last_mc_mb_var_sum;
  84     int last_mb_var_sum;
  85     UINT64 i_cplx_sum[5];
  86     UINT64 p_cplx_sum[5];
  87     UINT64 mv_bits_sum[5];
  88     UINT64 qscale_sum[5];
  89     int frame_count[5];
  90     int last_non_b_pict_type;
  91 }RateControlContext;
  92
  93 typedef struct ReorderBuffer{
  94     UINT8 *picture[3];
  95     int pict_type;
  96     int qscale;
  97     int force_type;
  98     int picture_number;
  99     int picture_in_gop_number;
 100 } ReorderBuffer;
 101
 102 typedef struct ScanTable{
 103     const UINT8 *scantable;
 104     UINT8 permutated[64];
 105     UINT8 raster_end[64];
 106 #ifdef ARCH_POWERPC
 107                 /* Used by dct_quantise_alitvec to find last-non-zero */
 108     UINT8 __align8 inverse[64];
 109 #endif
 110 } ScanTable;
 111
 112 typedef struct ParseContext{
 113     UINT8 *buffer;
 114     int index;
 115     int last_index;
 116     int buffer_size;
 117     int state;
 118     int frame_start_found;
 119 } ParseContext;
 120
 121 typedef struct MpegEncContext {
 122     struct AVCodecContext *avctx;
 123     /* the following parameters must be initialized before encoding */
 124     int width, height; /* picture size. must be a multiple of 16 */
 125     int gop_size;
 126     int frame_rate; /* number of frames per second */
 127     int intra_only; /* if true, only intra pictures are generated */
 128     int bit_rate;        /* wanted bit rate */
 129     int bit_rate_tolerance; /* amount of +- bits (>0)*/
 130     enum OutputFormat out_format; /* output format */
 131     int h263_pred;    /* use mpeg4/h263 ac/dc predictions */
 132
 133 /* the following codec id fields are deprecated in favor of codec_id */
 134     int h263_plus; /* h263 plus headers */
 135     int h263_rv10; /* use RV10 variation for H263 */
 136     int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
 137     int h263_intel; /* use I263 intel h263 header */
 138
 139     int codec_id;     /* see CODEC_ID_xxx */
 140     int fixed_qscale; /* fixed qscale if non zero */
 141     float qcompress;  /* amount of qscale change between easy & hard scenes (0.0-1.0) */
 142     float qblur;      /* amount of qscale smoothing over time (0.0-1.0) */
 143     int qmin;         /* min qscale */
 144     int qmax;         /* max qscale */
 145     int max_qdiff;    /* max qscale difference between frames */
 146     int encoding;     /* true if we are encoding (vs decoding) */
 147     int flags;        /* AVCodecContext.flags (HQ, MV4, ...) */
 148     int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
 149     int max_b_frames; /* max number of b-frames for encoding */
 150     int b_frame_strategy;
 151     int luma_elim_threshold;
 152     int chroma_elim_threshold;
 153     int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
 154     int workaround_bugs;       /* workaround bugs in encoders which cannot be detected automatically */
 155     /* the following fields are managed internally by the encoder */
 156
 157     /* bit output */
 158     PutBitContext pb;
 159
 160     /* sequence parameters */
 161     int context_initialized;
 162     int input_picture_number;
 163     int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
 164     int picture_number;
 165     int fake_picture_number; /* picture number at the bitstream frame rate */
 166     int gop_picture_number;  /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
 167     int picture_in_gop_number; /* 0-> first pic in gop, ... */
 168     int b_frames_since_non_b;  /* used for encoding, relative to not yet reordered input */
 169     int mb_width, mb_height;   /* number of MBs horizontally & vertically */
 170     int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
 171     int mb_num;                /* number of MBs of a picture */
 172     int linesize;              /* line size, in bytes, may be different from width */
 173     int uvlinesize;            /* line size, for chroma in bytes, may be different from width */
 174     UINT8 *new_picture[3];     /* picture to be compressed */
 175     UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
 176     int picture_buffer_index;
 177     ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
 178     UINT8 *last_picture[3];      /* previous picture */
 179     UINT8 *last_picture_base[3]; /* real start of the picture */
 180     UINT8 *next_picture[3];      /* previous picture (for bidir pred) */
 181     UINT8 *next_picture_base[3]; /* real start of the picture */
 182     UINT8 *aux_picture[3];       /* aux picture (for B frames only) */
 183     UINT8 *aux_picture_base[3];  /* real start of the picture */
 184     UINT8 *current_picture[3];   /* buffer to store the decompressed current picture */
 185     void *last_dr_opaque;
 186     void *next_dr_opaque;
 187     int ip_buffer_count;         /* number of buffers, currently only >2 if dr1 is used */
 188     int num_available_buffers;   /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
 189     int last_dc[3];              /* last DC values for MPEG1 */
 190     INT16 *dc_val[3];            /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
 191     int y_dc_scale, c_dc_scale;
 192     UINT8 *y_dc_scale_table;     /* qscale -> y_dc_scale table */
 193     UINT8 *c_dc_scale_table;     /* qscale -> c_dc_scale table */
 194     UINT8 *coded_block;          /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
 195     INT16 (*ac_val[3])[16];      /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
 196     int ac_pred;
 197     int mb_skiped;              /* MUST BE SET only during DECODING */
 198     UINT8 *mbskip_table;        /* used to avoid copy if macroblock skipped (for black regions for example)
 199                                    and used for b-frame encoding & decoding (contains skip table of next P Frame) */
 200     UINT8 *mbintra_table;       /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
 201     UINT8 *cbp_table;           /* used to store cbp, ac_pred for partitioned decoding */
 202     UINT8 *pred_dir_table;      /* used to store pred_dir for partitioned decoding */
 203     INT8 *qscale_table;         /* used to store qscale */
 204     INT8 *aux_qscale_table;
 205     INT8 *next_qscale_table;
 206     INT8 *last_qscale_table;     //FIXME move these into some picture struct (MpegEncContext.aux.qscale_table[])
 207     UINT8 *edge_emu_buffer;
 208
 209     int input_qscale;           /* qscale prior to reordering of frames */
 210     int input_pict_type;        /* pict_type prior to reordering of frames */
 211     int force_type;             /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
 212     int qscale;                 /* QP */
 213     float frame_qscale;         /* qscale from the frame level rc */
 214     int adaptive_quant;         /* use adaptive quantization */
 215     int dquant;                 /* qscale difference to prev qscale */
 216     int pict_type;              /* I_TYPE, P_TYPE, B_TYPE, ... */
 217     int last_pict_type;
 218     int last_non_b_pict_type;   /* used for mpeg4 gmc b-frames & ratecontrol */
 219     int frame_rate_index;
 220     /* motion compensation */
 221     int unrestricted_mv;
 222     int h263_long_vectors; /* use horrible h263v1 long vector mode */
 223
 224     DSPContext dsp;             /* pointers for accelerated dsp fucntions */
 225     int f_code; /* forward MV resolution */
 226     int b_code; /* backward MV resolution for B Frames (mpeg4) */
 227     INT16 (*motion_val)[2];            /* used for MV prediction (4MV per MB) */
 228     INT16 (*p_mv_table)[2];            /* MV table (1MV per MB) p-frame encoding */
 229     INT16 (*b_forw_mv_table)[2];       /* MV table (1MV per MB) forward mode b-frame encoding */
 230     INT16 (*b_back_mv_table)[2];       /* MV table (1MV per MB) backward mode b-frame encoding */
 231     INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
 232     INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
 233     INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
 234     INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
 235     INT16 (*b_direct_mv_table)[2];     /* MV table (1MV per MB) direct mode b-frame encoding */
 236     int me_method;                     /* ME algorithm */
 237     uint8_t *me_scratchpad;            /* data area for the me algo, so that the ME doesnt need to malloc/free */
 238     uint32_t *me_map;                  /* map to avoid duplicate evaluations */
 239     uint16_t *me_score_map;            /* map to store the SADs */
 240     int me_map_generation;
 241     int skip_me;                       /* set if ME is skiped for the current MB */
 242     int scene_change_score;
 243     int mv_dir;
 244 #define MV_DIR_BACKWARD  1
 245 #define MV_DIR_FORWARD   2
 246 #define MV_DIRECT        4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
 247     int mv_type;
 248 #define MV_TYPE_16X16       0   /* 1 vector for the whole mb */
 249 #define MV_TYPE_8X8         1   /* 4 vectors (h263, mpeg4 4MV) */
 250 #define MV_TYPE_16X8        2   /* 2 vectors, one per 16x8 block */
 251 #define MV_TYPE_FIELD       3   /* 2 vectors, one per field */
 252 #define MV_TYPE_DMV         4   /* 2 vectors, special mpeg2 Dual Prime Vectors */
 253     /* motion vectors for a macroblock
 254        first coordinate : 0 = forward 1 = backward
 255        second "         : depend on type
 256        third  "         : 0 = x, 1 = y
 257     */
 258     int mv[2][4][2];
 259     int field_select[2][2];
 260     int last_mv[2][2][2];             /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
 261     UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
 262     UINT8 *fcode_tab; /* smallest fcode needed for each MV */
 263
 264     int has_b_frames;
 265     int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
 266                         for b-frames rounding mode is allways 0 */
 267
 268     int hurry_up;     /* when set to 1 during decoding, b frames will be skiped
 269                          when set to 2 idct/dequant will be skipped too */
 270
 271     /* macroblock layer */
 272     int mb_x, mb_y;
 273     int mb_incr;
 274     int mb_intra;
 275     UINT16 *mb_var;       /* Table for MB variances */
 276     UINT16 *mc_mb_var;    /* Table for motion compensated MB variances */
 277     UINT8 *mb_mean;       /* Table for MB luminance */
 278     UINT8 *mb_type;       /* Table for MB type */
 279 #define MB_TYPE_INTRA    0x01
 280 #define MB_TYPE_INTER    0x02
 281 #define MB_TYPE_INTER4V  0x04
 282 #define MB_TYPE_SKIPED   0x08
 283 #define MB_TYPE_GMC      0x10
 284
 285 #define MB_TYPE_DIRECT   0x10
 286 #define MB_TYPE_FORWARD  0x20
 287 #define MB_TYPE_BACKWARD 0x40
 288 #define MB_TYPE_BIDIR    0x80
 289
 290     int block_index[6]; /* index to current MB in block based arrays with edges*/
 291     int block_wrap[6];
 292
 293     /* matrix transmitted in the bitstream */
 294     UINT16 intra_matrix[64];
 295     UINT16 chroma_intra_matrix[64];
 296     UINT16 inter_matrix[64];
 297     UINT16 chroma_inter_matrix[64];
 298 #define QUANT_BIAS_SHIFT 4
 299     int intra_quant_bias;    /* bias for the quantizer */
 300     int inter_quant_bias;    /* bias for the quantizer */
 301     int min_qcoeff;          /* minimum encodable coefficient */
 302     int max_qcoeff;          /* maximum encodable coefficient */
 303     /* precomputed matrix (combine qscale and DCT renorm) */
 304     int __align8 q_intra_matrix[32][64];
 305     int __align8 q_inter_matrix[32][64];
 306     /* identical to the above but for MMX & these are not permutated */
 307     UINT16 __align8 q_intra_matrix16[32][64];
 308     UINT16 __align8 q_inter_matrix16[32][64];
 309     UINT16 __align8 q_intra_matrix16_bias[32][64];
 310     UINT16 __align8 q_inter_matrix16_bias[32][64];
 311     int block_last_index[6];  /* last non zero coefficient in block */
 312     /* scantables */
 313     ScanTable __align8 intra_scantable;
 314     ScanTable intra_h_scantable;
 315     ScanTable intra_v_scantable;
 316     ScanTable inter_scantable; // if inter == intra then intra should be used to reduce tha cache usage
 317     UINT8 idct_permutation[64];
 318     int idct_permutation_type;
 319 #define FF_NO_IDCT_PERM 1
 320 #define FF_LIBMPEG2_IDCT_PERM 2
 321 #define FF_SIMPLE_IDCT_PERM 3
 322 #define FF_TRANSPOSE_IDCT_PERM 4
 323
 324     void *opaque; /* private data for the user */
 325
 326     /* bit rate control */
 327     int I_frame_bits; //FIXME used in mpeg12 ...
 328     int mb_var_sum;          /* sum of MB variance for current frame */
 329     int mc_mb_var_sum;       /* motion compensated MB variance for current frame */
 330     INT64 wanted_bits;
 331     INT64 total_bits;
 332     int frame_bits;        /* bits used for the current frame */
 333     RateControlContext rc_context; // contains stuff only accessed in ratecontrol.c
 334
 335     /* statistics, used for 2-pass encoding */
 336     int mv_bits;
 337     int header_bits;
 338     int i_tex_bits;
 339     int p_tex_bits;
 340     int i_count;
 341     int f_count;
 342     int b_count;
 343     int skip_count;
 344     int misc_bits; // cbp, mb_type
 345     int last_bits; //temp var used for calculating the above vars
 346
 347     /* error concealment / resync */
 348     UINT8 *error_status_table;       /* table of the error status of each MB */
 349 #define VP_START            1        /* current MB is the first after a resync marker */
 350 #define AC_ERROR            2
 351 #define DC_ERROR            4
 352 #define MV_ERROR            8
 353 #define AC_END              16
 354 #define DC_END              32
 355 #define MV_END              64
 356 //FIXME some prefix?
 357
 358     int resync_mb_x;                 /* x position of last resync marker */
 359     int resync_mb_y;                 /* y position of last resync marker */
 360     GetBitContext last_resync_gb;    /* used to serach for the next resync marker */
 361     int mb_num_left;                 /* number of MBs left in this video packet (for partitioned Slices only)*/
 362     int next_p_frame_damaged;        /* set if the next p frame is damaged, to avoid showing trashed b frames */
 363     int error_resilience;
 364
 365     ParseContext parse_context;
 366
 367     /* H.263 specific */
 368     int gob_number;
 369     int gob_index;
 370
 371     /* H.263+ specific */
 372     int umvplus;
 373     int umvplus_dec;
 374     int h263_aic; /* Advanded INTRA Coding (AIC) */
 375     int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
 376
 377     /* mpeg4 specific */
 378     int time_increment_resolution;
 379     int time_increment_bits;        /* number of bits to represent the fractional part of time */
 380     int last_time_base;
 381     int time_base;                  /* time in seconds of last I,P,S Frame */
 382     INT64 time;                   /* time of current frame */
 383     INT64 last_non_b_time;
 384     UINT16 pp_time;               /* time distance between the last 2 p,s,i frames */
 385     UINT16 pb_time;               /* time distance between the last b and p,s,i frame */
 386     UINT16 pp_field_time;
 387     UINT16 pb_field_time;         /* like above, just for interlaced */
 388     int shape;
 389     int vol_sprite_usage;
 390     int sprite_width;
 391     int sprite_height;
 392     int sprite_left;
 393     int sprite_top;
 394     int sprite_brightness_change;
 395     int num_sprite_warping_points;
 396     int real_sprite_warping_points;
 397     int sprite_offset[2][2];         /* sprite offset[isChroma][isMVY] */
 398     int sprite_delta[2][2];          /* sprite_delta [isY][isMVY] */
 399     int sprite_shift[2];             /* sprite shift [isChroma] */
 400     int mcsel;
 401     int quant_precision;
 402     int quarter_sample;              /* 1->qpel, 0->half pel ME/MC */
 403     int scalability;
 404     int hierachy_type;
 405     int enhancement_type;
 406     int new_pred;
 407     int reduced_res_vop;
 408     int aspect_ratio_info;
 409     int aspected_width;
 410     int aspected_height;
 411     int sprite_warping_accuracy;
 412     int low_latency_sprite;
 413     int data_partitioning;           /* data partitioning flag from header */
 414     int partitioned_frame;           /* is current frame partitioned */
 415     int rvlc;                        /* reversible vlc */
 416     int resync_marker;               /* could this stream contain resync markers*/
 417     int low_delay;                   /* no reordering needed / has no b-frames */
 418     int vo_type;
 419     int vol_control_parameters;      /* does the stream contain the low_delay flag, used to workaround buggy encoders */
 420     PutBitContext tex_pb;            /* used for data partitioned VOPs */
 421     PutBitContext pb2;               /* used for data partitioned VOPs */
 422 #define PB_BUFFER_SIZE 1024*256
 423     uint8_t *tex_pb_buffer;
 424     uint8_t *pb2_buffer;
 425     int mpeg_quant;
 426 #define CO_LOCATED_TYPE_4MV     1
 427 #define CO_LOCATED_TYPE_FIELDMV 2
 428     INT8 *co_located_type_table;     /* 4mv & field_mv info for next b frame */
 429     INT16 (*field_mv_table)[2][2];   /* used for interlaced b frame decoding */
 430     INT8 (*field_select_table)[2];   /* wtf, no really another table for interlaced b frames */
 431     int t_frame;                     /* time distance of first I -> B, used for interlaced b frames */
 432     int padding_bug_score;           /* used to detect the VERY common padding bug in MPEG4 */
 433
 434     /* divx specific, used to workaround (many) bugs in divx5 */
 435     int divx_version;
 436     int divx_build;
 437 #define BITSTREAM_BUFFER_SIZE 1024*256
 438     UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
 439     int bitstream_buffer_size;
 440
 441     int xvid_build;
 442
 443     /* lavc specific stuff, used to workaround bugs in libavcodec */
 444     int ffmpeg_version;
 445     int lavc_build;
 446
 447     /* RV10 specific */
 448     int rv10_version; /* RV10 version: 0 or 3 */
 449     int rv10_first_dc_coded[3];
 450
 451     /* MJPEG specific */
 452     struct MJpegContext *mjpeg_ctx;
 453     int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
 454     int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
 455     int mjpeg_write_tables; /* do we want to have quantisation- and
 456                                huffmantables in the jpeg file ? */
 457     int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
 458
 459     /* MSMPEG4 specific */
 460     int mv_table_index;
 461     int rl_table_index;
 462     int rl_chroma_table_index;
 463     int dc_table_index;
 464     int use_skip_mb_code;
 465     int slice_height;      /* in macroblocks */
 466     int first_slice_line;  /* used in mpeg4 too to handle resync markers */
 467     int flipflop_rounding;
 468     int msmpeg4_version;   /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
 469     int per_mb_rl_table;
 470     int esc3_level_length;
 471     int esc3_run_length;
 472     /* [mb_intra][isChroma][level][run][last] */
 473     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
 474     int inter_intra_pred;
 475
 476     /* decompression specific */
 477     GetBitContext gb;
 478
 479     /* MPEG2 specific - I wish I had not to support this mess. */
 480     int progressive_sequence;
 481     int mpeg_f_code[2][2];
 482     int picture_structure;
 483 /* picture type */
 484 #define PICT_TOP_FIELD     1
 485 #define PICT_BOTTOM_FIELD  2
 486 #define PICT_FRAME         3
 487
 488     int intra_dc_precision;
 489     int frame_pred_frame_dct;
 490     int top_field_first;
 491     int concealment_motion_vectors;
 492     int q_scale_type;
 493     int intra_vlc_format;
 494     int alternate_scan;
 495     int repeat_first_field;
 496     int chroma_420_type;
 497     int progressive_frame;
 498     int mpeg2;
 499     int full_pel[2];
 500     int interlaced_dct;
 501     int last_qscale;
 502     int first_slice;
 503
 504     /* RTP specific */
 505     /* These are explained on avcodec.h */
 506     int rtp_mode;
 507     int rtp_payload_size;
 508     void (*rtp_callback)(void *data, int size, int packet_number);
 509     UINT8 *ptr_lastgob;
 510     UINT8 *ptr_last_mb_line;
 511     UINT32 mb_line_avgsize;
 512
 513     DCTELEM (*block)[64]; /* points to one of the following blocks */
 514     DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
 515     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
 516 #define SLICE_OK         0
 517 #define SLICE_ERROR     -1
 518 #define SLICE_END       -2 //end marker found
 519 #define SLICE_NOEND     -3 //no end marker or error found but mb count exceeded
 520
 521     void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
 522                            DCTELEM *block, int n, int qscale);
 523     void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
 524                            DCTELEM *block, int n, int qscale);
 525     void (*dct_unquantize_h263)(struct MpegEncContext *s,
 526                            DCTELEM *block, int n, int qscale);
 527     void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
 528                            DCTELEM *block, int n, int qscale);
 529     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
 530     void (*fdct)(DCTELEM *block/* align 16*/);
 531     void (*idct_put)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
 532     void (*idct_add)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
 533 } MpegEncContext;
 534
 535
 536 int DCT_common_init(MpegEncContext *s);
 537 int MPV_common_init(MpegEncContext *s);
 538 void MPV_common_end(MpegEncContext *s);
 539 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
 540 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
 541 void MPV_frame_end(MpegEncContext *s);
 542 #ifdef HAVE_MMX
 543 void MPV_common_init_mmx(MpegEncContext *s);
 544 #endif
 545 #ifdef ARCH_ALPHA
 546 void MPV_common_init_axp(MpegEncContext *s);
 547 #endif
 548 #ifdef HAVE_MLIB
 549 void MPV_common_init_mlib(MpegEncContext *s);
 550 #endif
 551 #ifdef HAVE_MMI
 552 void MPV_common_init_mmi(MpegEncContext *s);
 553 #endif
 554 #ifdef ARCH_ARMV4L
 555 void MPV_common_init_armv4l(MpegEncContext *s);
 556 #endif
 557 #ifdef ARCH_POWERPC
 558 void MPV_common_init_ppc(MpegEncContext *s);
 559 #endif
 560 extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
 561 void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
 562 void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
 563 void ff_clean_intra_table_entries(MpegEncContext *s);
 564 void ff_init_scantable(MpegEncContext *s, ScanTable *st, const UINT8 *src_scantable);
 565 void ff_error_resilience(MpegEncContext *s);
 566 void ff_draw_horiz_band(MpegEncContext *s);
 567
 568 extern int ff_bit_exact;
 569
 570 static inline void ff_init_block_index(MpegEncContext *s){
 571     s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
 572     s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1)     + s->mb_x*2;
 573     s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
 574     s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2)     + s->mb_x*2;
 575     s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
 576     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;
 577 }
 578
 579 static inline void ff_update_block_index(MpegEncContext *s){
 580     s->block_index[0]+=2;
 581     s->block_index[1]+=2;
 582     s->block_index[2]+=2;
 583     s->block_index[3]+=2;
 584     s->block_index[4]++;
 585     s->block_index[5]++;
 586 }
 587
 588
 589 /* motion_est.c */
 590 void ff_estimate_p_frame_motion(MpegEncContext * s,
 591                              int mb_x, int mb_y);
 592 void ff_estimate_b_frame_motion(MpegEncContext * s,
 593                              int mb_x, int mb_y);
 594 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
 595 void ff_fix_long_p_mvs(MpegEncContext * s);
 596 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
 597
 598
 599 /* mpeg12.c */
 600 extern const INT16 ff_mpeg1_default_intra_matrix[64];
 601 extern const INT16 ff_mpeg1_default_non_intra_matrix[64];
 602 extern UINT8 ff_mpeg1_dc_scale_table[128];
 603
 604 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
 605 void mpeg1_encode_mb(MpegEncContext *s,
 606                      DCTELEM block[6][64],
 607                      int motion_x, int motion_y);
 608 void ff_mpeg1_encode_init(MpegEncContext *s);
 609
 610
 611 /* h263enc.c */
 612 typedef struct RLTable {
 613     int n; /* number of entries of table_vlc minus 1 */
 614     int last; /* number of values for last = 0 */
 615     const UINT16 (*table_vlc)[2];
 616     const INT8 *table_run;
 617     const INT8 *table_level;
 618     UINT8 *index_run[2]; /* encoding only */
 619     INT8 *max_level[2]; /* encoding & decoding */
 620     INT8 *max_run[2];   /* encoding & decoding */
 621     VLC vlc;            /* decoding only deprected FIXME remove*/
 622     RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
 623 } RLTable;
 624
 625 void init_rl(RLTable *rl);
 626 void init_vlc_rl(RLTable *rl);
 627
 628 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
 629 {
 630     int index;
 631     index = rl->index_run[last][run];
 632     if (index >= rl->n)
 633         return rl->n;
 634     if (level > rl->max_level[last][run])
 635         return rl->n;
 636     return index + level - 1;
 637 }
 638
 639 extern UINT8 ff_mpeg4_y_dc_scale_table[32];
 640 extern UINT8 ff_mpeg4_c_dc_scale_table[32];
 641 extern const INT16 ff_mpeg4_default_intra_matrix[64];
 642 extern const INT16 ff_mpeg4_default_non_intra_matrix[64];
 643 void h263_encode_mb(MpegEncContext *s,
 644                     DCTELEM block[6][64],
 645                     int motion_x, int motion_y);
 646 void mpeg4_encode_mb(MpegEncContext *s,
 647                     DCTELEM block[6][64],
 648                     int motion_x, int motion_y);
 649 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
 650 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
 651 INT16 *h263_pred_motion(MpegEncContext * s, int block,
 652                         int *px, int *py);
 653 void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
 654                    int dir);
 655 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
 656 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
 657 void h263_encode_init(MpegEncContext *s);
 658 void h263_decode_init_vlc(MpegEncContext *s);
 659 int h263_decode_picture_header(MpegEncContext *s);
 660 int ff_h263_decode_gob_header(MpegEncContext *s);
 661 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
 662
 663
 664 int intel_h263_decode_picture_header(MpegEncContext *s);
 665 int ff_h263_decode_mb(MpegEncContext *s,
 666                       DCTELEM block[6][64]);
 667 int h263_get_picture_format(int width, int height);
 668 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
 669 void ff_mpeg4_clean_buffers(MpegEncContext *s);
 670 void ff_mpeg4_stuffing(PutBitContext * pbc);
 671 void ff_mpeg4_init_partitions(MpegEncContext *s);
 672 void ff_mpeg4_merge_partitions(MpegEncContext *s);
 673 void ff_clean_mpeg4_qscales(MpegEncContext *s);
 674 void ff_clean_h263_qscales(MpegEncContext *s);
 675 int ff_mpeg4_decode_partitions(MpegEncContext *s);
 676 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
 677 int ff_h263_resync(MpegEncContext *s);
 678 int ff_h263_get_gob_height(MpegEncContext *s);
 679
 680
 681 /* rv10.c */
 682 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
 683 int rv_decode_dc(MpegEncContext *s, int n);
 684
 685
 686 /* msmpeg4.c */
 687 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
 688 void msmpeg4_encode_ext_header(MpegEncContext * s);
 689 void msmpeg4_encode_mb(MpegEncContext * s,
 690                        DCTELEM block[6][64],
 691                        int motion_x, int motion_y);
 692 int msmpeg4_decode_picture_header(MpegEncContext * s);
 693 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
 694 int ff_msmpeg4_decode_init(MpegEncContext *s);
 695 void ff_msmpeg4_encode_init(MpegEncContext *s);
 696
 697
 698 /* mjpegenc.c */
 699 int mjpeg_init(MpegEncContext *s);
 700 void mjpeg_close(MpegEncContext *s);
 701 void mjpeg_encode_mb(MpegEncContext *s,
 702                      DCTELEM block[6][64]);
 703 void mjpeg_picture_header(MpegEncContext *s);
 704 void mjpeg_picture_trailer(MpegEncContext *s);
 705
 706
 707 /* rate control */
 708 int ff_rate_control_init(MpegEncContext *s);
 709 float ff_rate_estimate_qscale(MpegEncContext *s);
 710 void ff_write_pass1_stats(MpegEncContext *s);
 711 void ff_rate_control_uninit(MpegEncContext *s);
 712 double ff_eval(char *s, double *const_value, char **const_name,
 713                double (**func1)(void *, double), char **func1_name,
 714                double (**func2)(void *, double, double), char **func2_name,
 715                void *opaque);
 716
 717
 718 #endif /* AVCODEC_MPEGVIDEO_H */