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 libavcodec/mpegvideo.h 25 * mpegvideo header. 26 */ 27 28#ifndef AVCODEC_MPEGVIDEO_H 29#define AVCODEC_MPEGVIDEO_H 30 31#include "dsputil.h" 32#include "bitstream.h" 33#include "ratecontrol.h" 34#include "parser.h" 35#include "mpeg12data.h" 36#include "rl.h" 37 38#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded 39 40enum OutputFormat { 41 FMT_MPEG1, 42 FMT_H261, 43 FMT_H263, 44 FMT_MJPEG, 45 FMT_H264, 46}; 47 48#define MPEG_BUF_SIZE (16 * 1024) 49 50#define QMAT_SHIFT_MMX 16 51#define QMAT_SHIFT 22 52 53#define MAX_FCODE 7 54#define MAX_MV 2048 55 56#define MAX_THREADS 8 57 58#define MAX_PICTURE_COUNT 32 59 60#define ME_MAP_SIZE 64 61#define ME_MAP_SHIFT 3 62#define ME_MAP_MV_BITS 11 63 64#define MAX_MB_BYTES (30*16*16*3/8 + 120) 65 66#define INPLACE_OFFSET 16 67 68/* Start codes. */ 69#define SEQ_END_CODE 0x000001b7 70#define SEQ_START_CODE 0x000001b3 71#define GOP_START_CODE 0x000001b8 72#define PICTURE_START_CODE 0x00000100 73#define SLICE_MIN_START_CODE 0x00000101 74#define SLICE_MAX_START_CODE 0x000001af 75#define EXT_START_CODE 0x000001b5 76#define USER_START_CODE 0x000001b2 77 78/** 79 * Picture. 80 */ 81typedef struct Picture{ 82 FF_COMMON_FRAME 83 84 /** 85 * halfpel luma planes. 86 */ 87 uint8_t *interpolated[3]; 88 int16_t (*motion_val_base[2])[2]; 89 uint32_t *mb_type_base; 90#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type 91#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4) 92#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16) 93#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM) 94#define IS_INTRA(a) ((a)&7) 95#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8)) 96#define IS_SKIP(a) ((a)&MB_TYPE_SKIP) 97#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM) 98#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED) 99#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2) 100#define IS_GMC(a) ((a)&MB_TYPE_GMC) 101#define IS_16X16(a) ((a)&MB_TYPE_16x16) 102#define IS_16X8(a) ((a)&MB_TYPE_16x8) 103#define IS_8X16(a) ((a)&MB_TYPE_8x16) 104#define IS_8X8(a) ((a)&MB_TYPE_8x8) 105#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused 106#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused 107#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused 108#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused 109#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED) 110#define IS_QUANT(a) ((a)&MB_TYPE_QUANT) 111#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list)))) 112#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs 113#define HAS_CBP(a) ((a)&MB_TYPE_CBP) 114 115 int field_poc[2]; ///< h264 top/bottom POC 116 int poc; ///< h264 frame POC 117 int frame_num; ///< h264 frame_num (raw frame_num from slice header) 118 int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num, 119 pic_num & max_pic_num; long -> long_pic_num) */ 120 int long_ref; ///< 1->long term reference 0->short term reference 121 int ref_poc[2][2][16]; ///< h264 POCs of the frames used as reference (FIXME need per slice) 122 int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice) 123 int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF 124 125 int mb_var_sum; ///< sum of MB variance for current frame 126 int mc_mb_var_sum; ///< motion compensated MB variance for current frame 127 uint16_t *mb_var; ///< Table for MB variances 128 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances 129 uint8_t *mb_mean; ///< Table for MB luminance 130 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove 131 int b_frame_score; /* */ 132} Picture; 133 134struct MpegEncContext; 135 136/** 137 * Motion estimation context. 138 */ 139typedef struct MotionEstContext{ 140 AVCodecContext *avctx; 141 int skip; ///< set if ME is skipped for the current MB 142 int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME 143 int direct_basis_mv[4][2]; 144 uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free 145 uint8_t *best_mb; 146 uint8_t *temp_mb[2]; 147 uint8_t *temp; 148 int best_bits; 149 uint32_t *map; ///< map to avoid duplicate evaluations 150 uint32_t *score_map; ///< map to store the scores 151 int map_generation; 152 int pre_penalty_factor; 153 int penalty_factor; /*!< an estimate of the bits required to 154 code a given mv value, e.g. (1,0) takes 155 more bits than (0,0). We have to 156 estimate whether any reduction in 157 residual is worth the extra bits. */ 158 int sub_penalty_factor; 159 int mb_penalty_factor; 160 int flags; 161 int sub_flags; 162 int mb_flags; 163 int pre_pass; ///< = 1 for the pre pass 164 int dia_size; 165 int xmin; 166 int xmax; 167 int ymin; 168 int ymax; 169 int pred_x; 170 int pred_y; 171 uint8_t *src[4][4]; 172 uint8_t *ref[4][4]; 173 int stride; 174 int uvstride; 175 /* temp variables for picture complexity calculation */ 176 int mc_mb_var_sum_temp; 177 int mb_var_sum_temp; 178 int scene_change_score; 179/* cmp, chroma_cmp;*/ 180 op_pixels_func (*hpel_put)[4]; 181 op_pixels_func (*hpel_avg)[4]; 182 qpel_mc_func (*qpel_put)[16]; 183 qpel_mc_func (*qpel_avg)[16]; 184 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV 185 uint8_t *current_mv_penalty; 186 int (*sub_motion_search)(struct MpegEncContext * s, 187 int *mx_ptr, int *my_ptr, int dmin, 188 int src_index, int ref_index, 189 int size, int h); 190}MotionEstContext; 191 192/** 193 * MpegEncContext. 194 */ 195typedef struct MpegEncContext { 196 struct AVCodecContext *avctx; 197 /* the following parameters must be initialized before encoding */ 198 int width, height;///< picture size. must be a multiple of 16 199 int gop_size; 200 int intra_only; ///< if true, only intra pictures are generated 201 int bit_rate; ///< wanted bit rate 202 enum OutputFormat out_format; ///< output format 203 int h263_pred; ///< use mpeg4/h263 ac/dc predictions 204 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved) 205 206/* the following codec id fields are deprecated in favor of codec_id */ 207 int h263_plus; ///< h263 plus headers 208 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead) 209 int h263_flv; ///< use flv h263 header 210 211 enum CodecID codec_id; /* see CODEC_ID_xxx */ 212 int fixed_qscale; ///< fixed qscale if non zero 213 int encoding; ///< true if we are encoding (vs decoding) 214 int flags; ///< AVCodecContext.flags (HQ, MV4, ...) 215 int flags2; ///< AVCodecContext.flags2 216 int max_b_frames; ///< max number of b-frames for encoding 217 int luma_elim_threshold; 218 int chroma_elim_threshold; 219 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...) 220 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically 221 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag 222 int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag 223 /* the following fields are managed internally by the encoder */ 224 225 /** bit output */ 226 PutBitContext pb; 227 228 /* sequence parameters */ 229 int context_initialized; 230 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else 231 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else 232 int picture_number; //FIXME remove, unclear definition 233 int picture_in_gop_number; ///< 0-> first pic in gop, ... 234 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input 235 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video() 236 int mb_width, mb_height; ///< number of MBs horizontally & vertically 237 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 238 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing 239 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing 240 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication) 241 int mb_num; ///< number of MBs of a picture 242 int linesize; ///< line size, in bytes, may be different from width 243 int uvlinesize; ///< line size, for chroma in bytes, may be different from width 244 Picture *picture; ///< main picture buffer 245 Picture **input_picture; ///< next pictures on display order for encoding 246 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding 247 248 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) 249 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) 250 struct MpegEncContext *thread_context[MAX_THREADS]; 251 252 /** 253 * copy of the previous picture structure. 254 * note, linesize & data, might not match the previous picture (for field pictures) 255 */ 256 Picture last_picture; 257 258 /** 259 * copy of the next picture structure. 260 * note, linesize & data, might not match the next picture (for field pictures) 261 */ 262 Picture next_picture; 263 264 /** 265 * copy of the source picture structure for encoding. 266 * note, linesize & data, might not match the source picture (for field pictures) 267 */ 268 Picture new_picture; 269 270 /** 271 * copy of the current picture structure. 272 * note, linesize & data, might not match the current picture (for field pictures) 273 */ 274 Picture current_picture; ///< buffer to store the decompressed current picture 275 276 Picture *last_picture_ptr; ///< pointer to the previous picture. 277 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred) 278 Picture *current_picture_ptr; ///< pointer to the current picture 279 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization 280 int last_dc[3]; ///< last DC values for MPEG1 281 int16_t *dc_val_base; 282 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous 283 int16_t dc_cache[4*5]; 284 int y_dc_scale, c_dc_scale; 285 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table 286 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table 287 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263) 288 uint8_t *coded_block_base; 289 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1) 290 int16_t (*ac_val_base)[16]; 291 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous 292 int ac_pred; 293 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip 294#define PREV_PICT_TYPES_BUFFER_SIZE 256 295 int mb_skipped; ///< MUST BE SET only during DECODING 296 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example) 297 and used for b-frame encoding & decoding (contains skip table of next P Frame) */ 298 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding 299 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding 300 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding 301 uint8_t *allocated_edge_emu_buffer; 302 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer 303 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision 304 uint8_t *obmc_scratchpad; 305 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers 306 307 int qscale; ///< QP 308 int chroma_qscale; ///< chroma QP 309 unsigned int lambda; ///< lagrange multipler used in rate distortion 310 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT 311 int *lambda_table; 312 int adaptive_quant; ///< use adaptive quantization 313 int dquant; ///< qscale difference to prev qscale 314 int pict_type; ///< FF_I_TYPE, FF_P_TYPE, FF_B_TYPE, ... 315 int last_pict_type; //FIXME removes 316 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol 317 int dropable; 318 int frame_rate_index; 319 int last_lambda_for[5]; ///< last lambda for a specific pict type 320 int skipdct; ///< skip dct and code zero residual 321 322 /* motion compensation */ 323 int unrestricted_mv; ///< mv can point outside of the coded picture 324 int h263_long_vectors; ///< use horrible h263v1 long vector mode 325 int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example) 326 327 DSPContext dsp; ///< pointers for accelerated dsp functions 328 int f_code; ///< forward MV resolution 329 int b_code; ///< backward MV resolution for B Frames (mpeg4) 330 int16_t (*p_mv_table_base)[2]; 331 int16_t (*b_forw_mv_table_base)[2]; 332 int16_t (*b_back_mv_table_base)[2]; 333 int16_t (*b_bidir_forw_mv_table_base)[2]; 334 int16_t (*b_bidir_back_mv_table_base)[2]; 335 int16_t (*b_direct_mv_table_base)[2]; 336 int16_t (*p_field_mv_table_base[2][2])[2]; 337 int16_t (*b_field_mv_table_base[2][2][2])[2]; 338 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding 339 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding 340 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding 341 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 342 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 343 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding 344 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding 345 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding 346 uint8_t (*p_field_select_table[2]); 347 uint8_t (*b_field_select_table[2][2]); 348 int me_method; ///< ME algorithm 349 int mv_dir; 350#define MV_DIR_FORWARD 1 351#define MV_DIR_BACKWARD 2 352#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4) 353 int mv_type; 354#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb 355#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV) 356#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block 357#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field 358#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors 359 /**motion vectors for a macroblock 360 first coordinate : 0 = forward 1 = backward 361 second " : depend on type 362 third " : 0 = x, 1 = y 363 */ 364 int mv[2][4][2]; 365 int field_select[2][2]; 366 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4 367 uint8_t *fcode_tab; ///< smallest fcode needed for each MV 368 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv 369 370 MotionEstContext me; 371 372 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...) 373 for b-frames rounding mode is always 0 */ 374 375 int hurry_up; /**< when set to 1 during decoding, b frames will be skipped 376 when set to 2 idct/dequant will be skipped too */ 377 378 /* macroblock layer */ 379 int mb_x, mb_y; 380 int mb_skip_run; 381 int mb_intra; 382 uint16_t *mb_type; ///< Table for candidate MB types for encoding 383#define CANDIDATE_MB_TYPE_INTRA 0x01 384#define CANDIDATE_MB_TYPE_INTER 0x02 385#define CANDIDATE_MB_TYPE_INTER4V 0x04 386#define CANDIDATE_MB_TYPE_SKIPPED 0x08 387//#define MB_TYPE_GMC 0x10 388 389#define CANDIDATE_MB_TYPE_DIRECT 0x10 390#define CANDIDATE_MB_TYPE_FORWARD 0x20 391#define CANDIDATE_MB_TYPE_BACKWARD 0x40 392#define CANDIDATE_MB_TYPE_BIDIR 0x80 393 394#define CANDIDATE_MB_TYPE_INTER_I 0x100 395#define CANDIDATE_MB_TYPE_FORWARD_I 0x200 396#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400 397#define CANDIDATE_MB_TYPE_BIDIR_I 0x800 398 399#define CANDIDATE_MB_TYPE_DIRECT0 0x1000 400 401 int block_index[6]; ///< index to current MB in block based arrays with edges 402 int block_wrap[6]; 403 uint8_t *dest[3]; 404 405 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride 406 407 /** matrix transmitted in the bitstream */ 408 uint16_t intra_matrix[64]; 409 uint16_t chroma_intra_matrix[64]; 410 uint16_t inter_matrix[64]; 411 uint16_t chroma_inter_matrix[64]; 412#define QUANT_BIAS_SHIFT 8 413 int intra_quant_bias; ///< bias for the quantizer 414 int inter_quant_bias; ///< bias for the quantizer 415 int min_qcoeff; ///< minimum encodable coefficient 416 int max_qcoeff; ///< maximum encodable coefficient 417 int ac_esc_length; ///< num of bits needed to encode the longest esc 418 uint8_t *intra_ac_vlc_length; 419 uint8_t *intra_ac_vlc_last_length; 420 uint8_t *inter_ac_vlc_length; 421 uint8_t *inter_ac_vlc_last_length; 422 uint8_t *luma_dc_vlc_length; 423 uint8_t *chroma_dc_vlc_length; 424#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level)) 425 426 int coded_score[8]; 427 428 /** precomputed matrix (combine qscale and DCT renorm) */ 429 int (*q_intra_matrix)[64]; 430 int (*q_inter_matrix)[64]; 431 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/ 432 uint16_t (*q_intra_matrix16)[2][64]; 433 uint16_t (*q_inter_matrix16)[2][64]; 434 int block_last_index[12]; ///< last non zero coefficient in block 435 /* scantables */ 436 DECLARE_ALIGNED_8(ScanTable, intra_scantable); 437 ScanTable intra_h_scantable; 438 ScanTable intra_v_scantable; 439 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage 440 441 /* noise reduction */ 442 int (*dct_error_sum)[64]; 443 int dct_count[2]; 444 uint16_t (*dct_offset)[64]; 445 446 void *opaque; ///< private data for the user 447 448 /* bit rate control */ 449 int64_t wanted_bits; 450 int64_t total_bits; 451 int frame_bits; ///< bits used for the current frame 452 int next_lambda; ///< next lambda used for retrying to encode a frame 453 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c 454 455 /* statistics, used for 2-pass encoding */ 456 int mv_bits; 457 int header_bits; 458 int i_tex_bits; 459 int p_tex_bits; 460 int i_count; 461 int f_count; 462 int b_count; 463 int skip_count; 464 int misc_bits; ///< cbp, mb_type 465 int last_bits; ///< temp var used for calculating the above vars 466 467 /* error concealment / resync */ 468 int error_count; 469 uint8_t *error_status_table; ///< table of the error status of each MB 470#define VP_START 1 ///< current MB is the first after a resync marker 471#define AC_ERROR 2 472#define DC_ERROR 4 473#define MV_ERROR 8 474#define AC_END 16 475#define DC_END 32 476#define MV_END 64 477//FIXME some prefix? 478 479 int resync_mb_x; ///< x position of last resync marker 480 int resync_mb_y; ///< y position of last resync marker 481 GetBitContext last_resync_gb; ///< used to search for the next resync marker 482 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only) 483 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames 484 int error_recognition; 485 486 ParseContext parse_context; 487 488 /* H.263 specific */ 489 int gob_index; 490 int obmc; ///< overlapped block motion compensation 491 int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames 492 493 /* H.263+ specific */ 494 int umvplus; ///< == H263+ && unrestricted_mv 495 int h263_aic; ///< Advanded INTRA Coding (AIC) 496 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top 497 int h263_slice_structured; 498 int alt_inter_vlc; ///< alternative inter vlc 499 int modified_quant; 500 int loop_filter; 501 int custom_pcf; 502 503 /* mpeg4 specific */ 504 int time_increment_bits; ///< number of bits to represent the fractional part of time 505 int last_time_base; 506 int time_base; ///< time in seconds of last I,P,S Frame 507 int64_t time; ///< time of current frame 508 int64_t last_non_b_time; 509 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames 510 uint16_t pb_time; ///< time distance between the last b and p,s,i frame 511 uint16_t pp_field_time; 512 uint16_t pb_field_time; ///< like above, just for interlaced 513 int shape; 514 int vol_sprite_usage; 515 int sprite_width; 516 int sprite_height; 517 int sprite_left; 518 int sprite_top; 519 int sprite_brightness_change; 520 int num_sprite_warping_points; 521 int real_sprite_warping_points; 522 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY] 523 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY] 524 int sprite_shift[2]; ///< sprite shift [isChroma] 525 int mcsel; 526 int quant_precision; 527 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC 528 int scalability; 529 int hierachy_type; 530 int enhancement_type; 531 int new_pred; 532 int reduced_res_vop; 533 int aspect_ratio_info; //FIXME remove 534 int sprite_warping_accuracy; 535 int low_latency_sprite; 536 int data_partitioning; ///< data partitioning flag from header 537 int partitioned_frame; ///< is current frame partitioned 538 int rvlc; ///< reversible vlc 539 int resync_marker; ///< could this stream contain resync markers 540 int low_delay; ///< no reordering needed / has no b-frames 541 int vo_type; 542 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders 543 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc 544 int use_intra_dc_vlc; 545 PutBitContext tex_pb; ///< used for data partitioned VOPs 546 PutBitContext pb2; ///< used for data partitioned VOPs 547 int mpeg_quant; 548 int t_frame; ///< time distance of first I -> B, used for interlaced b frames 549 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4 550 int cplx_estimation_trash_i; 551 int cplx_estimation_trash_p; 552 int cplx_estimation_trash_b; 553 554 /* divx specific, used to workaround (many) bugs in divx5 */ 555 int divx_version; 556 int divx_build; 557 int divx_packed; 558 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them 559 int bitstream_buffer_size; 560 unsigned int allocated_bitstream_buffer_size; 561 562 int xvid_build; 563 564 /* lavc specific stuff, used to workaround bugs in libavcodec */ 565 int lavc_build; 566 567 /* RV10 specific */ 568 int rv10_version; ///< RV10 version: 0 or 3 569 int rv10_first_dc_coded[3]; 570 571 /* MJPEG specific */ 572 struct MJpegContext *mjpeg_ctx; 573 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1} 574 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1} 575 576 /* MSMPEG4 specific */ 577 int mv_table_index; 578 int rl_table_index; 579 int rl_chroma_table_index; 580 int dc_table_index; 581 int use_skip_mb_code; 582 int slice_height; ///< in macroblocks 583 int first_slice_line; ///< used in mpeg4 too to handle resync markers 584 int flipflop_rounding; 585 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8 586 int per_mb_rl_table; 587 int esc3_level_length; 588 int esc3_run_length; 589 /** [mb_intra][isChroma][level][run][last] */ 590 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]; 591 int inter_intra_pred; 592 int mspel; 593 594 /* decompression specific */ 595 GetBitContext gb; 596 597 /* Mpeg1 specific */ 598 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific 599 int last_mv_dir; ///< last mv_dir, used for b frame encoding 600 int broken_link; ///< no_output_of_prior_pics_flag 601 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream 602 603 /* MPEG-2-specific - I wished not to have to support this mess. */ 604 int progressive_sequence; 605 int mpeg_f_code[2][2]; 606 int picture_structure; 607/* picture type */ 608#define PICT_TOP_FIELD 1 609#define PICT_BOTTOM_FIELD 2 610#define PICT_FRAME 3 611 612 int intra_dc_precision; 613 int frame_pred_frame_dct; 614 int top_field_first; 615 int concealment_motion_vectors; 616 int q_scale_type; 617 int intra_vlc_format; 618 int alternate_scan; 619 int repeat_first_field; 620 int chroma_420_type; 621 int chroma_format; 622#define CHROMA_420 1 623#define CHROMA_422 2 624#define CHROMA_444 3 625 int chroma_x_shift;//depend on pix_format, that depend on chroma_format 626 int chroma_y_shift; 627 628 int progressive_frame; 629 int full_pel[2]; 630 int interlaced_dct; 631 int first_slice; 632 int first_field; ///< is 1 for the first field of a field picture 0 otherwise 633 634 /* RTP specific */ 635 int rtp_mode; 636 637 uint8_t *ptr_lastgob; 638 int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped 639 DCTELEM (*pblocks[12])[64]; 640 641 DCTELEM (*block)[64]; ///< points to one of the following blocks 642 DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block 643 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch() 644#define SLICE_OK 0 645#define SLICE_ERROR -1 646#define SLICE_END -2 ///<end marker found 647#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded 648 649 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, 650 DCTELEM *block/*align 16*/, int n, int qscale); 651 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, 652 DCTELEM *block/*align 16*/, int n, int qscale); 653 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, 654 DCTELEM *block/*align 16*/, int n, int qscale); 655 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, 656 DCTELEM *block/*align 16*/, int n, int qscale); 657 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s, 658 DCTELEM *block/*align 16*/, int n, int qscale); 659 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s, 660 DCTELEM *block/*align 16*/, int n, int qscale); 661 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s, 662 DCTELEM *block/*align 16*/, int n, int qscale); 663 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s, 664 DCTELEM *block/*align 16*/, int n, int qscale); 665 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both) 666 DCTELEM *block/*align 16*/, int n, int qscale); 667 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both) 668 DCTELEM *block/*align 16*/, int n, int qscale); 669 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow); 670 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow); 671 void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block); 672} MpegEncContext; 673 674 675void MPV_decode_defaults(MpegEncContext *s); 676int MPV_common_init(MpegEncContext *s); 677void MPV_common_end(MpegEncContext *s); 678void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]); 679int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx); 680void MPV_frame_end(MpegEncContext *s); 681int MPV_encode_init(AVCodecContext *avctx); 682int MPV_encode_end(AVCodecContext *avctx); 683int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data); 684void MPV_common_init_mmx(MpegEncContext *s); 685void MPV_common_init_axp(MpegEncContext *s); 686void MPV_common_init_mlib(MpegEncContext *s); 687void MPV_common_init_mmi(MpegEncContext *s); 688void MPV_common_init_arm(MpegEncContext *s); 689void MPV_common_init_altivec(MpegEncContext *s); 690void ff_clean_intra_table_entries(MpegEncContext *s); 691void ff_draw_horiz_band(MpegEncContext *s, int y, int h); 692void ff_mpeg_flush(AVCodecContext *avctx); 693void ff_print_debug_info(MpegEncContext *s, AVFrame *pict); 694void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix); 695int ff_find_unused_picture(MpegEncContext *s, int shared); 696void ff_denoise_dct(MpegEncContext *s, DCTELEM *block); 697void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src); 698const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state); 699 700void ff_er_frame_start(MpegEncContext *s); 701void ff_er_frame_end(MpegEncContext *s); 702void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status); 703 704int ff_dct_common_init(MpegEncContext *s); 705void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64], 706 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra); 707 708void ff_init_block_index(MpegEncContext *s); 709void ff_copy_picture(Picture *dst, Picture *src); 710 711extern const enum PixelFormat ff_pixfmt_list_420[]; 712extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[]; 713 714static inline void ff_update_block_index(MpegEncContext *s){ 715 const int block_size= 8>>s->avctx->lowres; 716 717 s->block_index[0]+=2; 718 s->block_index[1]+=2; 719 s->block_index[2]+=2; 720 s->block_index[3]+=2; 721 s->block_index[4]++; 722 s->block_index[5]++; 723 s->dest[0]+= 2*block_size; 724 s->dest[1]+= block_size; 725 s->dest[2]+= block_size; 726} 727 728static inline int get_bits_diff(MpegEncContext *s){ 729 const int bits= put_bits_count(&s->pb); 730 const int last= s->last_bits; 731 732 s->last_bits = bits; 733 734 return bits - last; 735} 736 737static inline int ff_h263_round_chroma(int x){ 738 static const uint8_t h263_chroma_roundtab[16] = { 739 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 740 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 741 }; 742 return h263_chroma_roundtab[x & 0xf] + (x >> 3); 743} 744 745/* motion_est.c */ 746void ff_estimate_p_frame_motion(MpegEncContext * s, 747 int mb_x, int mb_y); 748void ff_estimate_b_frame_motion(MpegEncContext * s, 749 int mb_x, int mb_y); 750int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type); 751void ff_fix_long_p_mvs(MpegEncContext * s); 752void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select, 753 int16_t (*mv_table)[2], int f_code, int type, int truncate); 754int ff_init_me(MpegEncContext *s); 755int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y); 756int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, 757 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], 758 int ref_mv_scale, int size, int h); 759int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, 760 int ref_index, int size, int h, int add_rate); 761 762/* mpeg12.c */ 763extern const uint8_t ff_mpeg1_dc_scale_table[128]; 764 765void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number); 766void mpeg1_encode_mb(MpegEncContext *s, 767 DCTELEM block[6][64], 768 int motion_x, int motion_y); 769void ff_mpeg1_encode_init(MpegEncContext *s); 770void ff_mpeg1_encode_slice_header(MpegEncContext *s); 771void ff_mpeg1_clean_buffers(MpegEncContext *s); 772int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size); 773 774extern const uint8_t ff_mpeg4_y_dc_scale_table[32]; 775extern const uint8_t ff_mpeg4_c_dc_scale_table[32]; 776extern const uint8_t ff_aic_dc_scale_table[32]; 777extern const int16_t ff_mpeg4_default_intra_matrix[64]; 778extern const int16_t ff_mpeg4_default_non_intra_matrix[64]; 779extern const uint8_t ff_h263_chroma_qscale_table[32]; 780extern const uint8_t ff_h263_loop_filter_strength[32]; 781 782/* h261.c */ 783void ff_h261_loop_filter(MpegEncContext *s); 784void ff_h261_reorder_mb_index(MpegEncContext* s); 785void ff_h261_encode_mb(MpegEncContext *s, 786 DCTELEM block[6][64], 787 int motion_x, int motion_y); 788void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number); 789void ff_h261_encode_init(MpegEncContext *s); 790int ff_h261_get_picture_format(int width, int height); 791 792 793/* h263.c, h263dec.c */ 794int ff_h263_decode_init(AVCodecContext *avctx); 795int ff_h263_decode_frame(AVCodecContext *avctx, 796 void *data, int *data_size, 797 const uint8_t *buf, int buf_size); 798int ff_h263_decode_end(AVCodecContext *avctx); 799void h263_encode_mb(MpegEncContext *s, 800 DCTELEM block[6][64], 801 int motion_x, int motion_y); 802void mpeg4_encode_mb(MpegEncContext *s, 803 DCTELEM block[6][64], 804 int motion_x, int motion_y); 805void h263_encode_picture_header(MpegEncContext *s, int picture_number); 806void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number); 807void h263_encode_gob_header(MpegEncContext * s, int mb_line); 808int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir, 809 int *px, int *py); 810void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, 811 int dir); 812void ff_set_mpeg4_time(MpegEncContext * s); 813void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number); 814void h263_encode_init(MpegEncContext *s); 815void h263_decode_init_vlc(MpegEncContext *s); 816int h263_decode_picture_header(MpegEncContext *s); 817int ff_h263_decode_gob_header(MpegEncContext *s); 818int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb); 819void ff_h263_update_motion_val(MpegEncContext * s); 820void ff_h263_loop_filter(MpegEncContext * s); 821void ff_set_qscale(MpegEncContext * s, int qscale); 822int ff_h263_decode_mba(MpegEncContext *s); 823void ff_h263_encode_mba(MpegEncContext *s); 824 825int intel_h263_decode_picture_header(MpegEncContext *s); 826int flv_h263_decode_picture_header(MpegEncContext *s); 827int ff_h263_decode_mb(MpegEncContext *s, 828 DCTELEM block[6][64]); 829int ff_mpeg4_decode_mb(MpegEncContext *s, 830 DCTELEM block[6][64]); 831int h263_get_picture_format(int width, int height); 832void ff_mpeg4_encode_video_packet_header(MpegEncContext *s); 833void ff_mpeg4_clean_buffers(MpegEncContext *s); 834void ff_mpeg4_stuffing(PutBitContext * pbc); 835void ff_mpeg4_init_partitions(MpegEncContext *s); 836void ff_mpeg4_merge_partitions(MpegEncContext *s); 837void ff_clean_mpeg4_qscales(MpegEncContext *s); 838void ff_clean_h263_qscales(MpegEncContext *s); 839int ff_mpeg4_decode_partitions(MpegEncContext *s); 840int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s); 841int ff_h263_resync(MpegEncContext *s); 842const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end); 843int ff_h263_get_gob_height(MpegEncContext *s); 844void ff_mpeg4_init_direct_mv(MpegEncContext *s); 845int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my); 846void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code); 847 848 849/* rv10.c */ 850void rv10_encode_picture_header(MpegEncContext *s, int picture_number); 851int rv_decode_dc(MpegEncContext *s, int n); 852void rv20_encode_picture_header(MpegEncContext *s, int picture_number); 853 854 855/* msmpeg4.c */ 856void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number); 857void msmpeg4_encode_ext_header(MpegEncContext * s); 858void msmpeg4_encode_mb(MpegEncContext * s, 859 DCTELEM block[6][64], 860 int motion_x, int motion_y); 861int msmpeg4_decode_picture_header(MpegEncContext * s); 862int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size); 863int ff_msmpeg4_decode_init(MpegEncContext *s); 864void ff_msmpeg4_encode_init(MpegEncContext *s); 865int ff_wmv2_decode_picture_header(MpegEncContext * s); 866int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s); 867void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr); 868void ff_mspel_motion(MpegEncContext *s, 869 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, 870 uint8_t **ref_picture, op_pixels_func (*pix_op)[4], 871 int motion_x, int motion_y, int h); 872int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number); 873void ff_wmv2_encode_mb(MpegEncContext * s, 874 DCTELEM block[6][64], 875 int motion_x, int motion_y); 876 877#endif /* AVCODEC_MPEGVIDEO_H */ 878 879