mpegvideo.h
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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 "avcodec.h"
32 #include "dsputil.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "h264chroma.h"
36 #include "hpeldsp.h"
37 #include "put_bits.h"
38 #include "ratecontrol.h"
39 #include "parser.h"
40 #include "mpeg12data.h"
41 #include "rl.h"
42 #include "thread.h"
43 #include "videodsp.h"
44 
45 #include "libavutil/opt.h"
46 #include "libavutil/timecode.h"
47 
48 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
49 
55 };
56 
57 #define MPEG_BUF_SIZE (16 * 1024)
58 
59 #define QMAT_SHIFT_MMX 16
60 #define QMAT_SHIFT 21
61 
62 #define MAX_FCODE 7
63 #define MAX_MV 4096
64 
65 #define MAX_THREADS 32
66 #define MAX_PICTURE_COUNT 36
67 
68 #define ME_MAP_SIZE 64
69 #define ME_MAP_SHIFT 3
70 #define ME_MAP_MV_BITS 11
71 
72 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
73 
74 #define INPLACE_OFFSET 16
75 
76 /* Start codes. */
77 #define SEQ_END_CODE 0x000001b7
78 #define SEQ_START_CODE 0x000001b3
79 #define GOP_START_CODE 0x000001b8
80 #define PICTURE_START_CODE 0x00000100
81 #define SLICE_MIN_START_CODE 0x00000101
82 #define SLICE_MAX_START_CODE 0x000001af
83 #define EXT_START_CODE 0x000001b5
84 #define USER_START_CODE 0x000001b2
85 
86 /**
87  * Value of Picture.reference when Picture is not a reference picture, but
88  * is held for delayed output.
89  */
90 #define DELAYED_PIC_REF 4
91 
92 struct MpegEncContext;
93 
94 /**
95  * Picture.
96  */
97 typedef struct Picture{
98  struct AVFrame f;
100 
102  int8_t *qscale_table;
103 
105  int16_t (*motion_val[2])[2];
106 
108  uint32_t *mb_type;
109 
112 
114  int8_t *ref_index[2];
115 
117  uint16_t *mb_var; ///< Table for MB variances
118 
120  uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
121 
122  int alloc_mb_width; ///< mb_width used to allocate tables
123  int alloc_mb_height; ///< mb_height used to allocate tables
124 
126  uint8_t *mb_mean; ///< Table for MB luminance
127 
129  /**
130  * hardware accelerator private data
131  */
133 
134 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
135 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
136 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
137 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
138 #define IS_INTRA(a) ((a)&7)
139 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
140 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
141 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
142 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
143 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
144 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
145 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
146 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
147 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
148 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
149 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
150 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
151 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
152 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
153 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
154 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
155 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
156 #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
157 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
158 
159  int field_poc[2]; ///< h264 top/bottom POC
160  int poc; ///< h264 frame POC
161  int frame_num; ///< h264 frame_num (raw frame_num from slice header)
162  int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
163  int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
164  pic_num & max_pic_num; long -> long_pic_num) */
165  int long_ref; ///< 1->long term reference 0->short term reference
166  int ref_poc[2][2][32]; ///< h264 POCs of the frames/fields used as reference (FIXME need per slice)
167  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
168  int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
169  int field_picture; ///< whether or not the picture was encoded in separate fields
170  int sync; ///< has been decoded after a keyframe
171 
172  int mb_var_sum; ///< sum of MB variance for current frame
173  int mc_mb_var_sum; ///< motion compensated MB variance for current frame
174 
175  int b_frame_score; /* */
176  int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
177 
179  int shared;
180 } Picture;
181 
182 /**
183  * Motion estimation context.
184  */
185 typedef struct MotionEstContext{
187  int skip; ///< set if ME is skipped for the current MB
188  int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
189  int direct_basis_mv[4][2];
190  uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
192  uint8_t *temp_mb[2];
195  uint32_t *map; ///< map to avoid duplicate evaluations
196  uint32_t *score_map; ///< map to store the scores
197  unsigned map_generation;
199  int penalty_factor; /**< an estimate of the bits required to
200  code a given mv value, e.g. (1,0) takes
201  more bits than (0,0). We have to
202  estimate whether any reduction in
203  residual is worth the extra bits. */
206  int flags;
208  int mb_flags;
209  int pre_pass; ///< = 1 for the pre pass
210  int dia_size;
211  int xmin;
212  int xmax;
213  int ymin;
214  int ymax;
215  int pred_x;
216  int pred_y;
217  uint8_t *src[4][4];
218  uint8_t *ref[4][4];
219  int stride;
220  int uvstride;
221  /* temp variables for picture complexity calculation */
225 /* cmp, chroma_cmp;*/
226  op_pixels_func (*hpel_put)[4];
227  op_pixels_func (*hpel_avg)[4];
228  qpel_mc_func (*qpel_put)[16];
229  qpel_mc_func (*qpel_avg)[16];
230  uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
232  int (*sub_motion_search)(struct MpegEncContext * s,
233  int *mx_ptr, int *my_ptr, int dmin,
234  int src_index, int ref_index,
235  int size, int h);
237 
238 /**
239  * MpegEncContext.
240  */
241 typedef struct MpegEncContext {
242  AVClass *class;
244  /* the following parameters must be initialized before encoding */
245  int width, height;///< picture size. must be a multiple of 16
246  int gop_size;
247  int intra_only; ///< if true, only intra pictures are generated
248  int bit_rate; ///< wanted bit rate
249  enum OutputFormat out_format; ///< output format
250  int h263_pred; ///< use mpeg4/h263 ac/dc predictions
251  int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
252 
253 /* the following codec id fields are deprecated in favor of codec_id */
254  int h263_plus; ///< h263 plus headers
255  int h263_flv; ///< use flv h263 header
256 
257  enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
258  int fixed_qscale; ///< fixed qscale if non zero
259  int encoding; ///< true if we are encoding (vs decoding)
260  int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
261  int flags2; ///< AVCodecContext.flags2
262  int max_b_frames; ///< max number of b-frames for encoding
265  int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
266  int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
267  int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
268  int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
269  /* the following fields are managed internally by the encoder */
270 
271  /* sequence parameters */
273  int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
274  int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
275  int picture_number; //FIXME remove, unclear definition
276  int picture_in_gop_number; ///< 0-> first pic in gop, ...
277  int mb_width, mb_height; ///< number of MBs horizontally & vertically
278  int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
279  int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
280  int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
281  int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
282  int mb_num; ///< number of MBs of a picture
283  int linesize; ///< line size, in bytes, may be different from width
284  int uvlinesize; ///< line size, for chroma in bytes, may be different from width
285  Picture *picture; ///< main picture buffer
286  Picture **input_picture; ///< next pictures on display order for encoding
287  Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
288 
289  int y_dc_scale, c_dc_scale;
290  int ac_pred;
291  int block_last_index[12]; ///< last non zero coefficient in block
292  int h263_aic; ///< Advanded INTRA Coding (AIC)
293 
294  /* scantables */
295  ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
299 
300  /* WARNING: changes above this line require updates to hardcoded
301  * offsets used in asm. */
302 
303  int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
304  /**
305  * pts difference between the first and second input frame, used for
306  * calculating dts of the first frame when there's a delay */
307  int64_t dts_delta;
308  /**
309  * reordered pts to be used as dts for the next output frame when there's
310  * a delay */
311  int64_t reordered_pts;
312 
313  /** bit output */
315 
316  int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
317  int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
319  int slice_context_count; ///< number of used thread_contexts
320 
321  /**
322  * copy of the previous picture structure.
323  * note, linesize & data, might not match the previous picture (for field pictures)
324  */
326 
327  /**
328  * copy of the next picture structure.
329  * note, linesize & data, might not match the next picture (for field pictures)
330  */
332 
333  /**
334  * copy of the source picture structure for encoding.
335  * note, linesize & data, might not match the source picture (for field pictures)
336  */
338 
339  /**
340  * copy of the current picture structure.
341  * note, linesize & data, might not match the current picture (for field pictures)
342  */
343  Picture current_picture; ///< buffer to store the decompressed current picture
344 
345  Picture *last_picture_ptr; ///< pointer to the previous picture.
346  Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
347  Picture *current_picture_ptr; ///< pointer to the current picture
348  int last_dc[3]; ///< last DC values for MPEG1
349  int16_t *dc_val_base;
350  int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
351  const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
352  const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
353  const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
355  uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
356  int16_t (*ac_val_base)[16];
357  int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
358  int mb_skipped; ///< MUST BE SET only during DECODING
359  uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
360  and used for b-frame encoding & decoding (contains skip table of next P Frame) */
361  uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
362  uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
363  uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
364  uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
365  uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
367  uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
368 
369  int qscale; ///< QP
370  int chroma_qscale; ///< chroma QP
371  unsigned int lambda; ///< lagrange multipler used in rate distortion
372  unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
374  int adaptive_quant; ///< use adaptive quantization
375  int dquant; ///< qscale difference to prev qscale
376  int closed_gop; ///< MPEG1/2 GOP is closed
377  int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
379  int last_pict_type; //FIXME removes
380  int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
384  int last_lambda_for[5]; ///< last lambda for a specific pict type
385  int skipdct; ///< skip dct and code zero residual
386 
387  /* motion compensation */
388  int unrestricted_mv; ///< mv can point outside of the coded picture
389  int h263_long_vectors; ///< use horrible h263v1 long vector mode
390 
391  DSPContext dsp; ///< pointers for accelerated dsp functions
395  int f_code; ///< forward MV resolution
396  int b_code; ///< backward MV resolution for B Frames (mpeg4)
397  int16_t (*p_mv_table_base)[2];
398  int16_t (*b_forw_mv_table_base)[2];
399  int16_t (*b_back_mv_table_base)[2];
402  int16_t (*b_direct_mv_table_base)[2];
403  int16_t (*p_field_mv_table_base[2][2])[2];
404  int16_t (*b_field_mv_table_base[2][2][2])[2];
405  int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
406  int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
407  int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
408  int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
409  int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
410  int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
411  int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
412  int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
415  int me_method; ///< ME algorithm
416  int mv_dir;
417 #define MV_DIR_FORWARD 1
418 #define MV_DIR_BACKWARD 2
419 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
420  int mv_type;
421 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
422 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
423 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
424 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
425 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
426  /**motion vectors for a macroblock
427  first coordinate : 0 = forward 1 = backward
428  second " : depend on type
429  third " : 0 = x, 1 = y
430  */
431  int mv[2][4][2];
432  int field_select[2][2];
433  int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
434  uint8_t *fcode_tab; ///< smallest fcode needed for each MV
435  int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
436 
438 
439  int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
440  for b-frames rounding mode is always 0 */
441 
442  /* macroblock layer */
443  int mb_x, mb_y;
445  int mb_intra;
446  uint16_t *mb_type; ///< Table for candidate MB types for encoding
447 #define CANDIDATE_MB_TYPE_INTRA 0x01
448 #define CANDIDATE_MB_TYPE_INTER 0x02
449 #define CANDIDATE_MB_TYPE_INTER4V 0x04
450 #define CANDIDATE_MB_TYPE_SKIPPED 0x08
451 //#define MB_TYPE_GMC 0x10
452 
453 #define CANDIDATE_MB_TYPE_DIRECT 0x10
454 #define CANDIDATE_MB_TYPE_FORWARD 0x20
455 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
456 #define CANDIDATE_MB_TYPE_BIDIR 0x80
457 
458 #define CANDIDATE_MB_TYPE_INTER_I 0x100
459 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
460 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
461 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
462 
463 #define CANDIDATE_MB_TYPE_DIRECT0 0x1000
464 
465  int block_index[6]; ///< index to current MB in block based arrays with edges
466  int block_wrap[6];
468 
469  int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
470 
471  /** matrix transmitted in the bitstream */
472  uint16_t intra_matrix[64];
473  uint16_t chroma_intra_matrix[64];
474  uint16_t inter_matrix[64];
475  uint16_t chroma_inter_matrix[64];
476 #define QUANT_BIAS_SHIFT 8
477  int intra_quant_bias; ///< bias for the quantizer
478  int inter_quant_bias; ///< bias for the quantizer
479  int min_qcoeff; ///< minimum encodable coefficient
480  int max_qcoeff; ///< maximum encodable coefficient
481  int ac_esc_length; ///< num of bits needed to encode the longest esc
487 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
488 
489  int coded_score[12];
490 
491  /** precomputed matrix (combine qscale and DCT renorm) */
492  int (*q_intra_matrix)[64];
494  int (*q_inter_matrix)[64];
495  /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
496  uint16_t (*q_intra_matrix16)[2][64];
497  uint16_t (*q_chroma_intra_matrix16)[2][64];
498  uint16_t (*q_inter_matrix16)[2][64];
499 
500  /* noise reduction */
501  int (*dct_error_sum)[64];
502  int dct_count[2];
503  uint16_t (*dct_offset)[64];
504 
505  void *opaque; ///< private data for the user
506 
507  /* bit rate control */
508  int64_t total_bits;
509  int frame_bits; ///< bits used for the current frame
510  int stuffing_bits; ///< bits used for stuffing
511  int next_lambda; ///< next lambda used for retrying to encode a frame
512  RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
513 
514  /* statistics, used for 2-pass encoding */
515  int mv_bits;
519  int i_count;
520  int f_count;
521  int b_count;
523  int misc_bits; ///< cbp, mb_type
524  int last_bits; ///< temp var used for calculating the above vars
525 
526  /* error concealment / resync */
527  int resync_mb_x; ///< x position of last resync marker
528  int resync_mb_y; ///< y position of last resync marker
529  GetBitContext last_resync_gb; ///< used to search for the next resync marker
530  int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
531  int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
533 
535 
536  /* H.263 specific */
538  int obmc; ///< overlapped block motion compensation
539  int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames
540  int mb_info; ///< interval for outputting info about mb offsets as side data
544 
545  /* H.263+ specific */
546  int umvplus; ///< == H263+ && unrestricted_mv
547  int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
549  int alt_inter_vlc; ///< alternative inter vlc
553 
554  /* mpeg4 specific */
555  int time_increment_bits; ///< number of bits to represent the fractional part of time
557  int time_base; ///< time in seconds of last I,P,S Frame
558  int64_t time; ///< time of current frame
560  uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
561  uint16_t pb_time; ///< time distance between the last b and p,s,i frame
562  uint16_t pp_field_time;
563  uint16_t pb_field_time; ///< like above, just for interlaced
564  int shape;
573  uint16_t sprite_traj[4][2]; ///< sprite trajectory points
574  int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
575  int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
576  int sprite_shift[2]; ///< sprite shift [isChroma]
577  int mcsel;
579  int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
583  int new_pred;
585  int aspect_ratio_info; //FIXME remove
588  int data_partitioning; ///< data partitioning flag from header
589  int partitioned_frame; ///< is current frame partitioned
590  int rvlc; ///< reversible vlc
591  int resync_marker; ///< could this stream contain resync markers
592  int low_delay; ///< no reordering needed / has no b-frames
593  int vo_type;
594  int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
595  int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
597  PutBitContext tex_pb; ///< used for data partitioned VOPs
598  PutBitContext pb2; ///< used for data partitioned VOPs
600  int t_frame; ///< time distance of first I -> B, used for interlaced b frames
601  int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
605 
606  /* divx specific, used to workaround (many) bugs in divx5 */
610  uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
613 
615 
616  /* lavc specific stuff, used to workaround bugs in libavcodec */
618 
619  /* RV10 specific */
620  int rv10_version; ///< RV10 version: 0 or 3
623 
624  /* MJPEG specific */
626  int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
627  int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
628  int esc_pos;
629 
630  /* MSMPEG4 specific */
636  int slice_height; ///< in macroblocks
637  int first_slice_line; ///< used in mpeg4 too to handle resync markers
639  int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
643  /** [mb_intra][isChroma][level][run][last] */
644  int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
646  int mspel;
647 
648  /* decompression specific */
650 
651  /* Mpeg1 specific */
652  int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
653  int last_mv_dir; ///< last mv_dir, used for b frame encoding
654  int broken_link; ///< no_output_of_prior_pics_flag
655  uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
656 
657  /* MPEG-2-specific - I wished not to have to support this mess. */
659  int mpeg_f_code[2][2];
661 /* picture type */
662 #define PICT_TOP_FIELD 1
663 #define PICT_BOTTOM_FIELD 2
664 #define PICT_FRAME 3
665 
676 #define CHROMA_420 1
677 #define CHROMA_422 2
678 #define CHROMA_444 3
679  int chroma_x_shift;//depend on pix_format, that depend on chroma_format
681 
683  int full_pel[2];
686  int first_field; ///< is 1 for the first field of a field picture 0 otherwise
687  int drop_frame_timecode; ///< timecode is in drop frame format.
688  int scan_offset; ///< reserve space for SVCD scan offset user data.
689 
690  /* RTP specific */
691  int rtp_mode;
692 
693  char *tc_opt_str; ///< timecode option string
694  AVTimecode tc; ///< timecode context
695 
697  int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
698  int16_t (*pblocks[12])[64];
699 
700  int16_t (*block)[64]; ///< points to one of the following blocks
701  int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
702  int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
703 #define SLICE_OK 0
704 #define SLICE_ERROR -1
705 #define SLICE_END -2 ///<end marker found
706 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
707 
709  int16_t *block/*align 16*/, int n, int qscale);
711  int16_t *block/*align 16*/, int n, int qscale);
713  int16_t *block/*align 16*/, int n, int qscale);
715  int16_t *block/*align 16*/, int n, int qscale);
717  int16_t *block/*align 16*/, int n, int qscale);
719  int16_t *block/*align 16*/, int n, int qscale);
721  int16_t *block/*align 16*/, int n, int qscale);
723  int16_t *block/*align 16*/, int n, int qscale);
724  void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
725  int16_t *block/*align 16*/, int n, int qscale);
726  void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
727  int16_t *block/*align 16*/, int n, int qscale);
728  int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
729  int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
730  void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
731 
732  int mpv_flags; ///< flags set by private options
734 
735  /* temp buffers for rate control */
736  float *cplx_tab, *bits_tab;
737 
738  /* flag to indicate a reinitialization is required, e.g. after
739  * a frame size change */
741 
744 
745 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
746  ((pic && pic >= old_ctx->picture && \
747  pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
748  &new_ctx->picture[pic - old_ctx->picture] : NULL)
749 
750 /* mpegvideo_enc common options */
751 #define FF_MPV_FLAG_SKIP_RD 0x0001
752 #define FF_MPV_FLAG_STRICT_GOP 0x0002
753 #define FF_MPV_FLAG_QP_RD 0x0004
754 #define FF_MPV_FLAG_CBP_RD 0x0008
755 
756 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
757 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
758 #define FF_MPV_COMMON_OPTS \
759 { "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" },\
760 { "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" },\
761 { "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" },\
762 { "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" },\
763 { "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" },\
764 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
765  FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
766 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
767  FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
768 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
769 
770 extern const AVOption ff_mpv_generic_options[];
771 
772 #define FF_MPV_GENERIC_CLASS(name) \
773 static const AVClass name ## _class = {\
774  .class_name = #name " encoder",\
775  .item_name = av_default_item_name,\
776  .option = ff_mpv_generic_options,\
777  .version = LIBAVUTIL_VERSION_INT,\
778 };
779 
780 /**
781  * Set the given MpegEncContext to common defaults (same for encoding
782  * and decoding). The changed fields will not depend upon the prior
783  * state of the MpegEncContext.
784  */
786 
792 void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
798  AVFrame *frame, int *got_packet);
807  Picture *last, int y, int h, int picture_structure,
808  int first_field, int draw_edges, int low_delay,
809  int v_edge_pos, int h_edge_pos);
810 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
812 
815  int *low_delay,
816  int mb_width, int mb_height, int mb_stride, int quarter_sample);
817 
818 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
819 
820 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
821 void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
823 void ff_denoise_dct(MpegEncContext *s, int16_t *block);
828 void ff_set_qscale(MpegEncContext * s, int qscale);
829 
831 
834 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
835  const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
836 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
837 
839 
841  uint8_t *dest_y, uint8_t *dest_cb,
842  uint8_t *dest_cr, int dir,
844  op_pixels_func (*pix_op)[4],
845  qpel_mc_func (*qpix_op)[16]);
846 
847 /**
848  * Allocate a Picture.
849  * The pixels are allocated/set by calling get_buffer() if shared = 0.
850  */
851 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
852 
853 extern const enum AVPixelFormat ff_pixfmt_list_420[];
854 
855 /**
856  * permute block according to permuatation.
857  * @param last last non zero element in scantable order
858  */
859 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
860 
861 static inline void ff_update_block_index(MpegEncContext *s){
862  const int block_size= 8 >> s->avctx->lowres;
863 
864  s->block_index[0]+=2;
865  s->block_index[1]+=2;
866  s->block_index[2]+=2;
867  s->block_index[3]+=2;
868  s->block_index[4]++;
869  s->block_index[5]++;
870  s->dest[0]+= 2*block_size;
871  s->dest[1]+= block_size;
872  s->dest[2]+= block_size;
873 }
874 
875 static inline int get_bits_diff(MpegEncContext *s){
876  const int bits= put_bits_count(&s->pb);
877  const int last= s->last_bits;
878 
879  s->last_bits = bits;
880 
881  return bits - last;
882 }
883 
884 static inline int ff_h263_round_chroma(int x){
885  static const uint8_t h263_chroma_roundtab[16] = {
886  // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
887  0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
888  };
889  return h263_chroma_roundtab[x & 0xf] + (x >> 3);
890 }
891 
892 /* motion_est.c */
894  int mb_x, int mb_y);
896  int mb_x, int mb_y);
897 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
899 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
900  int16_t (*mv_table)[2], int f_code, int type, int truncate);
901 int ff_init_me(MpegEncContext *s);
902 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
903 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
904  int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
905  int ref_mv_scale, int size, int h);
906 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
907  int ref_index, int size, int h, int add_rate);
908 
909 /* mpeg12.c */
910 extern const uint8_t ff_mpeg1_dc_scale_table[128];
911 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
912 
915  int16_t block[6][64],
916  int motion_x, int motion_y);
919 
920 extern const uint8_t ff_aic_dc_scale_table[32];
921 extern const uint8_t ff_h263_chroma_qscale_table[32];
922 extern const uint8_t ff_h263_loop_filter_strength[32];
923 
924 /* rv10.c */
925 void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
926 int ff_rv_decode_dc(MpegEncContext *s, int n);
927 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
928 
929 
930 /* msmpeg4.c */
931 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
934  int16_t block[6][64],
935  int motion_x, int motion_y);
937 int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
942 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
944  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
945  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
946  int motion_x, int motion_y, int h);
947 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
949  int16_t block[6][64],
950  int motion_x, int motion_y);
951 
954 
955 
956 #endif /* AVCODEC_MPEGVIDEO_H */
int last_time_base
Definition: mpegvideo.h:556
int bitstream_buffer_size
Definition: mpegvideo.h:611
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free
Definition: mpegvideo.h:190
int inter_intra_pred
Definition: mpegvideo.h:645
int ff_pre_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
Definition: motion_est.c:1073
int chroma_elim_threshold
Definition: mpegvideo.h:264
int rv10_first_dc_coded[3]
Definition: mpegvideo.h:621
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:509
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
Definition: mpegvideo.h:512
int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir)
find the lowest MB row referenced in the MVs
Definition: mpegvideo.c:2560
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:401
int8_t * ref_index[2]
Definition: mpegvideo.h:114
int aspect_ratio_info
Definition: mpegvideo.h:585
int picture_number
Definition: mpegvideo.h:275
const char * s
Definition: avisynth_c.h:668
ScanTable intra_v_scantable
Definition: mpegvideo.h:298
AVBufferRef * mb_var_buf
Definition: mpegvideo.h:116
rate control context.
Definition: ratecontrol.h:63
int esc3_level_length
Definition: mpegvideo.h:641
int time_increment_bits
number of bits to represent the fractional part of time
Definition: mpegvideo.h:555
This structure describes decoded (raw) audio or video data.
Definition: frame.h:76
struct MpegEncContext MpegEncContext
MpegEncContext.
void ff_mpeg1_encode_slice_header(MpegEncContext *s)
Definition: mpeg12enc.c:361
FIXME Range Coding of cr are ref
Definition: snow.txt:367
int skip
set if ME is skipped for the current MB
Definition: mpegvideo.h:187
int16_t(* p_mv_table)[2]
MV table (1MV per MB) p-frame encoding.
Definition: mpegvideo.h:405
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
Definition: mpegvideo.h:365
AVOption.
Definition: opt.h:251
uint8_t * fcode_tab
smallest fcode needed for each MV
Definition: mpegvideo.h:434
int start_mb_y
start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:316
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:351
uint8_t * mb_mean
Table for MB luminance.
Definition: mpegvideo.h:126
int vol_control_parameters
does the stream contain the low_delay flag, used to workaround buggy encoders
Definition: mpegvideo.h:594
static int RENAME() dct_quantize(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
int sprite_warping_accuracy
Definition: mpegvideo.h:586
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG1 & B-frame MPEG4
Definition: mpegvideo.h:433
int pre_pass
= 1 for the pre pass
Definition: mpegvideo.h:209
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:3005
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:718
uint8_t * coded_block_base
Definition: mpegvideo.h:354
int end_mb_y
end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) ...
Definition: mpegvideo.h:317
uint16_t * mb_var
Table for MB variances.
Definition: mpegvideo.h:117
uint16_t(* q_chroma_intra_matrix16)[2][64]
Definition: mpegvideo.h:497
uint16_t chroma_intra_matrix[64]
Definition: mpegvideo.h:473
int broken_link
no_output_of_prior_pics_flag
Definition: mpegvideo.h:654
void ff_MPV_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
uint8_t * current_mv_penalty
Definition: mpegvideo.h:231
int16_t(*[3] ac_val)[16]
used for for mpeg4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:357
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:281
int ff_MPV_encode_end(AVCodecContext *avctx)
void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2907
uint16_t chroma_inter_matrix[64]
Definition: mpegvideo.h:475
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:639
Scantable.
Definition: dsputil.h:114
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
Definition: mpegvideo.h:176
uint8_t * bitstream_buffer
Definition: mpegvideo.h:610
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:3300
int obmc
overlapped block motion compensation
Definition: mpegvideo.h:538
int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:286
int sub_penalty_factor
Definition: mpegvideo.h:204
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegvideo.h:169
void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Definition: msmpeg4enc.c:371
int scan_offset
reserve space for SVCD scan offset user data.
Definition: mpegvideo.h:688
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced p-frame encoding.
Definition: mpegvideo.h:411
void ff_convert_matrix(DSPContext *dsp, int(*qmat)[64], uint16_t(*qmat16)[2][64], const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
Definition: mpegvideo_enc.c:74
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:397
int min_qcoeff
minimum encodable coefficient
Definition: mpegvideo.h:479
int real_sprite_warping_points
Definition: mpegvideo.h:572
int ff_get_mb_score(MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
int coded_score[12]
Definition: mpegvideo.h:489
uint32_t * score_map
map to store the scores
Definition: mpegvideo.h:196
int num_sprite_warping_points
Definition: mpegvideo.h:571
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:2625
int pre_penalty_factor
Definition: mpegvideo.h:198
int scene_change_score
Definition: mpegvideo.h:224
int mpv_flags
flags set by private options
Definition: mpegvideo.h:732
int mmco_reset
h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET...
Definition: mpegvideo.h:162
Timecode helpers header.
uint8_t * intra_ac_vlc_length
Definition: mpegvideo.h:482
int padding_bug_score
used to detect the VERY common padding bug in MPEG4
Definition: mpegvideo.h:601
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:282
int t_frame
time distance of first I -> B, used for interlaced b frames
Definition: mpegvideo.h:600
uint16_t sprite_traj[4][2]
sprite trajectory points
Definition: mpegvideo.h:573
void ff_release_unused_pictures(MpegEncContext *s, int remove_current)
Definition: mpegvideo.c:1396
int ff_dct_common_init(MpegEncContext *s)
Definition: mpegvideo.c:160
int time_base
time in seconds of last I,P,S Frame
Definition: mpegvideo.h:557
int qscale
QP.
Definition: mpegvideo.h:369
int h263_aic
Advanded INTRA Coding (AIC)
Definition: mpegvideo.h:292
int reduced_res_vop
Definition: mpegvideo.h:584
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode b-frame encoding.
Definition: mpegvideo.h:407
int chroma_x_shift
Definition: mpegvideo.h:679
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:259
int field_select[2][2]
Definition: mpegvideo.h:432
void ff_MPV_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1717
int ff_epzs_motion_search(MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, int size, int h)
int block_wrap[6]
Definition: mpegvideo.h:466
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:399
int quant_precision
Definition: mpegvideo.h:578
int modified_quant
Definition: mpegvideo.h:550
int low_latency_sprite
Definition: mpegvideo.h:587
int skipdct
skip dct and code zero residual
Definition: mpegvideo.h:385
int b_frame_score
Definition: mpegvideo.h:175
#define MAX_THREADS
Definition: mpegvideo.h:65
int intra_dc_threshold
QP above whch the ac VLC should be used for intra dc.
Definition: mpegvideo.h:595
int ref_poc[2][2][32]
h264 POCs of the frames/fields used as reference (FIXME need per slice)
Definition: mpegvideo.h:166
int alloc_mb_width
mb_width used to allocate tables
Definition: mpegvideo.h:122
int sprite_shift[2]
sprite shift [isChroma]
Definition: mpegvideo.h:576
int picture_in_gop_number
0-> first pic in gop, ...
Definition: mpegvideo.h:276
int long_ref
1->long term reference 0->short term reference
Definition: mpegvideo.h:165
int esc3_run_length
Definition: mpegvideo.h:642
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:549
uint8_t * ptr_lastgob
Definition: mpegvideo.h:696
int mb_num_left
number of MBs left in this video packet (for partitioned Slices only)
Definition: mpegvideo.h:530
int64_t time
time of current frame
Definition: mpegvideo.h:558
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
permute block according to permuatation.
Definition: mpegvideo.c:3045
void ff_MPV_common_init_altivec(MpegEncContext *s)
int context_reinit
Definition: mpegvideo.h:740
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:69
AVRational mpeg2_frame_rate_ext
Definition: mpegvideo.h:383
int16_t * dc_val_base
Definition: mpegvideo.h:349
uint8_t bits
Definition: crc.c:216
uint8_t
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: mpegvideo.h:167
Picture ** input_picture
next pictures on display order for encoding
Definition: mpegvideo.h:286
AVOptions.
PutBitContext pb2
used for data partitioned VOPs
Definition: mpegvideo.h:598
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have add an so the codec calls ff_thread_report set AVCodecInternal allocate_progress The frames must then be freed with as it s useful too and the implementation is trivial when you re doing this Note that draw_edges() needs to be called before reporting progress.Before accessing a reference frame or its MVs
void ff_denoise_dct(MpegEncContext *s, int16_t *block)
uint16_t(* dct_offset)[64]
Definition: mpegvideo.h:503
void ff_dct_encode_init_x86(MpegEncContext *s)
Definition: mpegvideoenc.c:84
static AVPacket pkt
Definition: demuxing.c:56
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:363
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture)
Deallocate a picture.
Definition: mpegvideo.c:441
Motion estimation context.
Definition: mpegvideo.h:185
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2996
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:523
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
Definition: mpegvideo.h:439
int interlaced_dct
Definition: mpegvideo.h:684
int(* q_chroma_intra_matrix)[64]
Definition: mpegvideo.h:493
int resync_marker
could this stream contain resync markers
Definition: mpegvideo.h:591
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:343
GetBitContext last_resync_gb
used to search for the next resync marker
Definition: mpegvideo.h:529
int intra_dc_precision
Definition: mpegvideo.h:666
int repeat_first_field
Definition: mpegvideo.h:673
int cplx_estimation_trash_b
Definition: mpegvideo.h:604
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
Definition: mpegvideo.h:408
float * cplx_tab
Definition: mpegvideo.h:736
int showed_packed_warning
flag for having shown the warning about divxs invalid b frames
Definition: mpegvideo.h:539
void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv10enc.c:31
bitstream reader API header.
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:560
AVBufferRef * mb_type_buf
Definition: mpegvideo.h:107
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
Definition: mpegvideo.h:367
int flags2
AVCodecContext.flags2.
Definition: mpegvideo.h:261
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:277
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
int ff_MPV_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:993
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:267
int max_qcoeff
maximum encodable coefficient
Definition: mpegvideo.h:480
int16_t(*[2][2] p_field_mv_table_base)[2]
Definition: mpegvideo.h:403
int ff_wmv2_decode_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:113
#define MAX_LEVEL
Definition: rl.h:35
int flipflop_rounding
Definition: mpegvideo.h:638
int dquant
qscale difference to prev qscale
Definition: mpegvideo.h:375
void ff_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
Definition: motion_est.c:869
int gop_picture_number
index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
Definition: mpegvideo.h:652
uint8_t * mb_info_ptr
Definition: mpegvideo.h:542
static void ff_update_block_index(MpegEncContext *s)
Definition: mpegvideo.h:861
void(* qpel_mc_func)(uint8_t *dst, uint8_t *src, ptrdiff_t stride)
Definition: dsputil.h:84
int sprite_offset[2][2]
sprite offset[isChroma][isMVY]
Definition: mpegvideo.h:574
AVBufferRef * mb_mean_buf
Definition: mpegvideo.h:125
int(* q_inter_matrix)[64]
Definition: mpegvideo.h:494
int ff_MPV_encode_init(AVCodecContext *avctx)
frame
Definition: stft.m:14
static int get_bits_diff(MpegEncContext *s)
Definition: mpegvideo.h:875
int(* q_intra_matrix)[64]
precomputed matrix (combine qscale and DCT renorm)
Definition: mpegvideo.h:492
int intra_only
if true, only intra pictures are generated
Definition: mpegvideo.h:247
Discrete Time axis x
ThreadFrame tf
Definition: mpegvideo.h:99
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: mpeg12enc.c:372
int16_t * dc_val[3]
used for mpeg4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:350
int h263_plus
h263 plus headers
Definition: mpegvideo.h:254
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:319
int last_non_b_pict_type
used for mpeg4 gmc b-frames & ratecontrol
Definition: mpegvideo.h:380
AVCodecID
Identify the syntax and semantics of the bitstream.
int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: wmv2enc.c:69
uint8_t * mbskip_table
Definition: mpegvideo.h:111
int stream_codec_tag
internal stream_codec_tag upper case converted from avctx stream_codec_tag
Definition: mpegvideo.h:268
int last_dc[3]
last DC values for MPEG1
Definition: mpegvideo.h:348
int16_t direct_scale_mv[2][64]
precomputed to avoid divisions in ff_mpeg4_set_direct_mv
Definition: mpegvideo.h:435
uint8_t * inter_ac_vlc_last_length
Definition: mpegvideo.h:485
void ff_MPV_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:41
static int ff_h263_round_chroma(int x)
Definition: mpegvideo.h:884
Multithreading support functions.
int rl_chroma_table_index
Definition: mpegvideo.h:633
int64_t total_bits
Definition: mpegvideo.h:508
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:358
int chroma_y_shift
Definition: mpegvideo.h:680
int strict_std_compliance
strictly follow the std (MPEG4, ...)
Definition: mpegvideo.h:265
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:589
void ff_MPV_decode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for decoding.
Definition: mpegvideo.c:826
int cplx_estimation_trash_p
Definition: mpegvideo.h:603
void(* dct_unquantize_h261_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:722
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:388
ERContext er
Definition: mpegvideo.h:742
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:384
int reference
Definition: mpegvideo.h:178
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegvideo.h:364
int per_mb_rl_table
Definition: mpegvideo.h:640
int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
Definition: wmv2dec.c:133
int h263_slice_structured
Definition: mpegvideo.h:548
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
Definition: mpegvideo.c:505
void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: msmpeg4enc.c:214
void ff_MPV_common_init_bfin(MpegEncContext *s)
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:579
uint16_t * mb_type
Table for candidate MB types for encoding.
Definition: mpegvideo.h:446
int low_delay
no reordering needed / has no b-frames
Definition: mpegvideo.h:592
rl header.
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
Definition: mpegvideo.c:635
int vol_sprite_usage
Definition: mpegvideo.h:565
GetBitContext gb
Definition: mpegvideo.h:649
enum AVCodecID codec_id
Definition: mov_chan.c:433
uint8_t *[2][2] b_field_select_table
Definition: mpegvideo.h:414
void ff_fix_long_mvs(MpegEncContext *s, uint8_t *field_select_table, int field_select, int16_t(*mv_table)[2], int f_code, int type, int truncate)
Definition: motion_est.c:1720
struct Picture Picture
Picture.
external API header
int size
int ff_MPV_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1171
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:73
int resync_mb_x
x position of last resync marker
Definition: mpegvideo.h:527
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:274
int * lambda_table
Definition: mpegvideo.h:373
AVBufferRef * hwaccel_priv_buf
Definition: mpegvideo.h:128
uint8_t * intra_ac_vlc_last_length
Definition: mpegvideo.h:483
int sprite_delta[2][2]
sprite_delta [isY][isMVY]
Definition: mpegvideo.h:575
int intra_vlc_format
Definition: mpegvideo.h:671
const uint8_t ff_h263_chroma_qscale_table[32]
Definition: h263data.h:262
int err_recognition
Definition: mpegvideo.h:532
AVBufferRef * motion_val_buf[2]
Definition: mpegvideo.h:104
Half-pel DSP context.
Definition: hpeldsp.h:45
const uint8_t ff_h263_loop_filter_strength[32]
Definition: h263data.h:275
int progressive_frame
Definition: mpegvideo.h:682
void ff_mpeg_er_frame_start(MpegEncContext *s)
int top_field_first
Definition: mpegvideo.h:668
uint16_t(* q_inter_matrix16)[2][64]
Definition: mpegvideo.h:498
uint8_t * vbv_delay_ptr
pointer to vbv_delay in the bitstream
Definition: mpegvideo.h:655
int fixed_qscale
fixed qscale if non zero
Definition: mpegvideo.h:258
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed b frames
Definition: mpegvideo.h:531
int me_method
ME algorithm.
Definition: mpegvideo.h:415
int poc
h264 frame POC
Definition: mpegvideo.h:160
int umvplus
== H263+ && unrestricted_mv
Definition: mpegvideo.h:546
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:337
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:708
int intra_quant_bias
bias for the quantizer
Definition: mpegvideo.h:477
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for b-frame encodin...
Definition: mpegvideo.h:359
int ff_init_me(MpegEncContext *s)
Definition: motion_est.c:295
int16_t(*[2] motion_val)[2]
Definition: mpegvideo.h:105
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:347
void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h)
Definition: wmv2.c:90
Picture.
Definition: mpegvideo.h:97
int alternate_scan
Definition: mpegvideo.h:672
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:612
void * hwaccel_picture_private
hardware accelerator private data
Definition: mpegvideo.h:132
void ff_msmpeg4_encode_init(MpegEncContext *s)
Definition: msmpeg4enc.c:115
static int decode_mb(ASV1Context *a, int16_t block[6][64])
Definition: asvdec.c:163
int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function for encode/decode called after coding/decoding the header and before a frame is code...
Definition: mpegvideo.c:1493
int16_t(* ac_val_base)[16]
Definition: mpegvideo.h:356
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideo.c:72
int ff_find_unused_picture(MpegEncContext *s, int shared)
Definition: mpegvideo.c:1453
uint16_t(* q_intra_matrix16)[2][64]
identical to the above but for MMX & these are not permutated, second 64 entries are bias ...
Definition: mpegvideo.h:496
unsigned map_generation
Definition: mpegvideo.h:197
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:404
int frame_num
h264 frame_num (raw frame_num from slice header)
Definition: mpegvideo.h:161
int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size)
Definition: msmpeg4dec.c:551
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:398
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Definition: wmv2enc.c:149
void ff_fix_long_p_mvs(MpegEncContext *s)
Definition: motion_est.c:1670
MotionEstContext me
Definition: mpegvideo.h:437
int pb_frame
PB frame mode (0 = none, 1 = base, 2 = improved)
Definition: mpegvideo.h:251
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:361
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:714
void ff_MPV_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:800
int ac_esc_length
num of bits needed to encode the longest esc
Definition: mpegvideo.h:481
int sprite_brightness_change
Definition: mpegvideo.h:570
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:465
int penalty_factor
an estimate of the bits required to code a given mv value, e.g.
Definition: mpegvideo.h:199
int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:3066
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:469
struct MJpegContext * mjpeg_ctx
Definition: mpegvideo.h:625
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:686
static const int8_t mv[256][2]
int first_slice_line
used in mpeg4 too to handle resync markers
Definition: mpegvideo.h:637
int frame_pred_frame_dct
Definition: mpegvideo.h:667
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:76
uint16_t * mc_mb_var
Table for motion compensated MB variances.
Definition: mpegvideo.h:120
AVBufferRef * qscale_table_buf
Definition: mpegvideo.h:101
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:400
Half-pel DSP functions.
int mbaff
h264 1 -> MBAFF frame 0-> not MBAFF
Definition: mpegvideo.h:168
dest
Definition: start.py:60
uint16_t inter_matrix[64]
Definition: mpegvideo.h:474
uint8_t * luma_dc_vlc_length
Definition: mpegvideo.h:486
int64_t last_non_b_time
Definition: mpegvideo.h:559
int sync
has been decoded after a keyframe
Definition: mpegvideo.h:170
int alloc_mb_height
mb_height used to allocate tables
Definition: mpegvideo.h:123
int cplx_estimation_trash_i
Definition: mpegvideo.h:602
int concealment_motion_vectors
Definition: mpegvideo.h:669
void ff_estimate_b_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
Definition: motion_est.c:1512
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:318
AVS_Value src
Definition: avisynth_c.h:523
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:372
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: mpegvideo.c:658
int h263_flv
use flv h263 header
Definition: mpegvideo.h:255
char * tc_opt_str
timecode option string
Definition: mpegvideo.h:693
AVCodecContext * avctx
Definition: mpegvideo.h:186
typedef void(RENAME(mix_any_func_type))
void ff_MPV_common_init_x86(MpegEncContext *s)
void ff_MPV_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1244
main external API structure.
ScanTable intra_scantable
Definition: mpegvideo.h:296
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
Definition: mpegvideo.h:355
void ff_mpeg1_encode_init(MpegEncContext *s)
Definition: mpeg12enc.c:744
void ff_MPV_report_decode_progress(MpegEncContext *s)
Definition: mpegvideo.c:3314
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
MPEG1/2 tables.
int ff_dct_encode_init(MpegEncContext *s)
const uint8_t *const ff_mpeg2_dc_scale_table[4]
Definition: mpegvideo.c:120
int64_t dts_delta
pts difference between the first and second input frame, used for calculating dts of the first frame ...
Definition: mpegvideo.h:307
int64_t user_specified_pts
last non zero pts from AVFrame which was passed into avcodec_encode_video()
Definition: mpegvideo.h:303
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:712
int chroma_420_type
Definition: mpegvideo.h:674
int luma_elim_threshold
Definition: mpegvideo.h:263
Picture * picture
main picture buffer
Definition: mpegvideo.h:285
int data_partitioning
data partitioning flag from header
Definition: mpegvideo.h:588
uint8_t * inter_ac_vlc_length
Definition: mpegvideo.h:484
int progressive_sequence
Definition: mpegvideo.h:658
BYTE int const BYTE int int int height
Definition: avisynth_c.h:713
Describe the class of an AVClass context structure.
Definition: log.h:50
int stuffing_bits
bits used for stuffing
Definition: mpegvideo.h:510
ScanTable intra_h_scantable
Definition: mpegvideo.h:297
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.h:248
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced b-frame encoding.
Definition: mpegvideo.h:412
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:362
int closed_gop
MPEG1/2 GOP is closed.
Definition: mpegvideo.h:376
struct MotionEstContext MotionEstContext
Motion estimation context.
rational number numerator/denominator
Definition: rational.h:43
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:716
int context_initialized
Definition: mpegvideo.h:272
int input_picture_number
used to set pic->display_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:273
int slice_height
in macroblocks
Definition: mpegvideo.h:636
int use_skip_mb_code
Definition: mpegvideo.h:635
int mb_info
interval for outputting info about mb offsets as side data
Definition: mpegvideo.h:540
DSPContext dsp
pointers for accelerated dsp functions
Definition: mpegvideo.h:391
#define MAX_MV
Definition: mpegvideo.h:63
int f_code
forward MV resolution
Definition: mpegvideo.h:395
#define type
void(* denoise_dct)(struct MpegEncContext *s, int16_t *block)
Definition: mpegvideo.h:730
int max_b_frames
max number of b-frames for encoding
Definition: mpegvideo.h:262
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:377
int bit_rate
wanted bit rate
Definition: mpegvideo.h:248
int last_mv_dir
last mv_dir, used for b frame encoding
Definition: mpegvideo.h:653
int field_poc[2]
h264 top/bottom POC
Definition: mpegvideo.h:159
int h263_pred
use mpeg4/h263 ac/dc predictions
Definition: mpegvideo.h:250
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode b-frame encoding.
Definition: mpegvideo.h:409
uint8_t *[2] p_field_select_table
Definition: mpegvideo.h:413
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode b-frame encoding.
Definition: mpegvideo.h:410
int ff_get_best_fcode(MpegEncContext *s, int16_t(*mv_table)[2], int type)
Definition: motion_est.c:1617
uint16_t pb_field_time
like above, just for interlaced
Definition: mpegvideo.h:563
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:352
int mc_mb_var_sum_temp
Definition: mpegvideo.h:222
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode b-frame encoding.
Definition: mpegvideo.h:406
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:279
uint8_t * best_mb
Definition: mpegvideo.h:191
MpegEncContext.
Definition: mpegvideo.h:241
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:346
int8_t * qscale_table
Definition: mpegvideo.h:102
#define MAX_RUN
Definition: rl.h:34
struct AVCodecContext * avctx
Definition: mpegvideo.h:243
uint16_t pp_field_time
Definition: mpegvideo.h:562
PutBitContext pb
bit output
Definition: mpegvideo.h:314
int use_intra_dc_vlc
Definition: mpegvideo.h:596
A reference to a data buffer.
Definition: buffer.h:81
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV *2+1]
Table of number of bits a motion vector component needs.
Definition: ituh263enc.c:45
int ff_mpv_frame_size_alloc(MpegEncContext *s, int linesize)
Definition: mpegvideo.c:204
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:726
int rvlc
reversible vlc
Definition: mpegvideo.h:590
int quantizer_noise_shaping
Definition: mpegvideo.h:733
int(* dct_error_sum)[64]
Definition: mpegvideo.h:501
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:729
void ff_MPV_common_init_axp(MpegEncContext *s)
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:278
AVBufferRef * mbskip_table_buf
Definition: mpegvideo.h:110
void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur, Picture *last, int y, int h, int picture_structure, int first_field, int draw_edges, int low_delay, int v_edge_pos, int h_edge_pos)
Definition: mpegvideo.c:2921
uint8_t * dest[3]
Definition: mpegvideo.h:467
int shared
Definition: mpegvideo.h:179
int last_pict_type
Definition: mpegvideo.h:379
int b4_stride
4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
Definition: mpegvideo.h:280
int adaptive_quant
use adaptive quantization
Definition: mpegvideo.h:374
void ff_msmpeg4_encode_ext_header(MpegEncContext *s)
Definition: msmpeg4enc.c:274
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:325
uint8_t * obmc_scratchpad
Definition: mpegvideo.h:366
int ff_rv_decode_dc(MpegEncContext *s, int n)
Definition: rv10.c:190
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:345
int64_t reordered_pts
reordered pts to be used as dts for the next output frame when there&#39;s a delay
Definition: mpegvideo.h:311
function y
Definition: D.m:1
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (h263)
Definition: mpegvideo.h:353
uint32_t * map
map to avoid duplicate evaluations
Definition: mpegvideo.h:195
Core video DSP helper functions.
void ff_print_debug_info2(AVCodecContext *avctx, Picture *p, AVFrame *pict, uint8_t *mbskip_table, int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegvideo.c:1878
DSP utils.
H264ChromaContext h264chroma
Definition: mpegvideo.h:392
int last_bits
temp var used for calculating the above vars
Definition: mpegvideo.h:524
int frame_rate_index
Definition: mpegvideo.h:382
int picture_structure
Definition: mpegvideo.h:660
void(* dct_unquantize_h261_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:720
VideoDSPContext vdsp
Definition: mpegvideo.h:394
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:724
OutputFormat
Definition: mpegvideo.h:50
int drop_frame_timecode
timecode is in drop frame format.
Definition: mpegvideo.h:687
int resync_mb_y
y position of last resync marker
Definition: mpegvideo.h:528
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:700
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
ParseContext parse_context
Definition: mpegvideo.h:534
ratecontrol header.
int pic_id
h264 pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: mpegvideo.h:163
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv20enc.c:32
PutBitContext tex_pb
used for data partitioned VOPs
Definition: mpegvideo.h:597
int enhancement_type
Definition: mpegvideo.h:582
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:331
AVBufferRef * mc_mb_var_buf
Definition: mpegvideo.h:119
int linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:283
Picture ** reordered_input_picture
pointer to the next pictures in codedorder for encoding
Definition: mpegvideo.h:287
int rl_table_index
Definition: mpegvideo.h:632
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:2170
int chroma_qscale
chroma QP
Definition: mpegvideo.h:370
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:2164
struct AVFrame f
Definition: mpegvideo.h:98
enum AVPixelFormat ff_pixfmt_list_420[]
Definition: mpegvideo.c:127
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
Allocate a Picture.
Definition: mpegvideo.c:384
int mb_var_sum
sum of MB variance for current frame
Definition: mpegvideo.h:172
int flags
AVCodecContext.flags (HQ, MV4, ...)
Definition: mpegvideo.h:260
int mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegvideo.h:173
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:472
uint32_t * mb_type
Definition: mpegvideo.h:108
int rv10_version
RV10 version: 0 or 3.
Definition: mpegvideo.h:620
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:266
ScanTable inter_scantable
if inter == intra then intra should be used to reduce tha cache usage
Definition: mpegvideo.h:295
uint8_t * temp
Definition: mpegvideo.h:193
int ff_msmpeg4_decode_picture_header(MpegEncContext *s)
Definition: msmpeg4dec.c:396
int h263_long_vectors
use horrible h263v1 long vector mode
Definition: mpegvideo.h:389
int inter_quant_bias
bias for the quantizer
Definition: mpegvideo.h:478
static int ref_picture(H264Context *h, Picture *dst, Picture *src)
Definition: h264.c:225
static int first_field(int fd)
Definition: v4l2.c:262
int mv_table_index
Definition: mpegvideo.h:631
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:402
int b_code
backward MV resolution for B Frames (mpeg4)
Definition: mpegvideo.h:396
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
Definition: mpegvideo.h:547
float * bits_tab
Definition: mpegvideo.h:736
AVTimecode tc
timecode context
Definition: mpegvideo.h:694
int dct_count[2]
Definition: mpegvideo.h:502
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:710
int uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:284
AVPixelFormat
Pixel format.
Definition: pixfmt.h:66
This structure stores compressed data.
int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt, AVFrame *frame, int *got_packet)
void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Definition: mpeg12enc.c:697
int dc_table_index
Definition: mpegvideo.h:634
unsigned int lambda
lagrange multipler used in rate distortion
Definition: mpegvideo.h:371
void * opaque
private data for the user
Definition: mpegvideo.h:505
DSPContext.
Definition: dsputil.h:127
uint16_t pb_time
time distance between the last b and p,s,i frame
Definition: mpegvideo.h:561
AVBufferRef * ref_index_buf[2]
Definition: mpegvideo.h:113
HpelDSPContext hdsp
Definition: mpegvideo.h:393
int next_lambda
next lambda used for retrying to encode a frame
Definition: mpegvideo.h:511
bitstream writer API