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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 <float.h>
32 
33 #include "avcodec.h"
34 #include "blockdsp.h"
35 #include "error_resilience.h"
36 #include "fdctdsp.h"
37 #include "get_bits.h"
38 #include "h264chroma.h"
39 #include "h263dsp.h"
40 #include "hpeldsp.h"
41 #include "idctdsp.h"
42 #include "internal.h"
43 #include "me_cmp.h"
44 #include "motion_est.h"
45 #include "mpegpicture.h"
46 #include "mpegvideodsp.h"
47 #include "mpegvideoencdsp.h"
48 #include "mpegvideodata.h"
49 #include "pixblockdsp.h"
50 #include "put_bits.h"
51 #include "ratecontrol.h"
52 #include "parser.h"
53 #include "mpegutils.h"
54 #include "mpeg12data.h"
55 #include "qpeldsp.h"
56 #include "thread.h"
57 #include "videodsp.h"
58 
59 #include "libavutil/opt.h"
60 #include "libavutil/timecode.h"
61 
62 #define MAX_THREADS 32
63 
64 #define MAX_B_FRAMES 16
65 
66 /* Start codes. */
67 #define SEQ_END_CODE 0x000001b7
68 #define SEQ_START_CODE 0x000001b3
69 #define GOP_START_CODE 0x000001b8
70 #define PICTURE_START_CODE 0x00000100
71 #define SLICE_MIN_START_CODE 0x00000101
72 #define SLICE_MAX_START_CODE 0x000001af
73 #define EXT_START_CODE 0x000001b5
74 #define USER_START_CODE 0x000001b2
75 #define SLICE_START_CODE 0x000001b7
76 
77 
78 /**
79  * MpegEncContext.
80  */
81 typedef struct MpegEncContext {
82  AVClass *class;
83 
85  int ac_pred;
86  int block_last_index[12]; ///< last non zero coefficient in block
87  int h263_aic; ///< Advanced INTRA Coding (AIC)
88 
89  /* scantables */
90  ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce the cache usage
94 
95  /* WARNING: changes above this line require updates to hardcoded
96  * offsets used in ASM. */
97 
99  /* the following parameters must be initialized before encoding */
100  int width, height;///< picture size. must be a multiple of 16
101  int gop_size;
102  int intra_only; ///< if true, only intra pictures are generated
103  int64_t bit_rate; ///< wanted bit rate
104  enum OutputFormat out_format; ///< output format
105  int h263_pred; ///< use MPEG-4/H.263 ac/dc predictions
106  int pb_frame; ///< PB-frame mode (0 = none, 1 = base, 2 = improved)
107 
108 /* the following codec id fields are deprecated in favor of codec_id */
109  int h263_plus; ///< H.263+ headers
110  int h263_flv; ///< use flv H.263 header
111 
112  enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
113  int fixed_qscale; ///< fixed qscale if non zero
114  int encoding; ///< true if we are encoding (vs decoding)
115  int max_b_frames; ///< max number of B-frames for encoding
118  int strict_std_compliance; ///< strictly follow the std (MPEG-4, ...)
119  int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
120  int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
121  /* the following fields are managed internally by the encoder */
122 
123  /* sequence parameters */
125  int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
126  int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
127  int picture_number; //FIXME remove, unclear definition
128  int picture_in_gop_number; ///< 0-> first pic in gop, ...
129  int mb_width, mb_height; ///< number of MBs horizontally & vertically
130  int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
131  int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
132  int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
133  int mb_num; ///< number of MBs of a picture
134  ptrdiff_t linesize; ///< line size, in bytes, may be different from width
135  ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
136  Picture *picture; ///< main picture buffer
137  Picture **input_picture; ///< next pictures on display order for encoding
138  Picture **reordered_input_picture; ///< pointer to the next pictures in coded order for encoding
139 
140  int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
141  /**
142  * pts difference between the first and second input frame, used for
143  * calculating dts of the first frame when there's a delay */
144  int64_t dts_delta;
145  /**
146  * reordered pts to be used as dts for the next output frame when there's
147  * a delay */
148  int64_t reordered_pts;
149 
150  /** bit output */
152 
153  int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
154  int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
156  int slice_context_count; ///< number of used thread_contexts
157 
158  /**
159  * copy of the previous picture structure.
160  * note, linesize & data, might not match the previous picture (for field pictures)
161  */
163 
164  /**
165  * copy of the next picture structure.
166  * note, linesize & data, might not match the next picture (for field pictures)
167  */
169 
170  /**
171  * copy of the source picture structure for encoding.
172  * note, linesize & data, might not match the source picture (for field pictures)
173  */
175 
176  /**
177  * copy of the current picture structure.
178  * note, linesize & data, might not match the current picture (for field pictures)
179  */
180  Picture current_picture; ///< buffer to store the decompressed current picture
181 
182  Picture *last_picture_ptr; ///< pointer to the previous picture.
183  Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
184  Picture *current_picture_ptr; ///< pointer to the current picture
185  int last_dc[3]; ///< last DC values for MPEG-1
186  int16_t *dc_val_base;
187  int16_t *dc_val[3]; ///< used for MPEG-4 DC prediction, all 3 arrays must be continuous
188  const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
189  const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
190  const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (H.263)
192  uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
193  int16_t (*ac_val_base)[16];
194  int16_t (*ac_val[3])[16]; ///< used for MPEG-4 AC prediction, all 3 arrays must be continuous
195  int mb_skipped; ///< MUST BE SET only during DECODING
196  uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
197  and used for B-frame encoding & decoding (contains skip table of next P-frame) */
198  uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
199  uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
200  uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
201 
203 
204  int qscale; ///< QP
205  int chroma_qscale; ///< chroma QP
206  unsigned int lambda; ///< Lagrange multiplier used in rate distortion
207  unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
209  int adaptive_quant; ///< use adaptive quantization
210  int dquant; ///< qscale difference to prev qscale
211  int closed_gop; ///< MPEG1/2 GOP is closed
212  int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
214  int last_pict_type; //FIXME removes
215  int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
219  int last_lambda_for[5]; ///< last lambda for a specific pict type
220  int skipdct; ///< skip dct and code zero residual
221 
222  /* motion compensation */
223  int unrestricted_mv; ///< mv can point outside of the coded picture
224  int h263_long_vectors; ///< use horrible H.263v1 long vector mode
225 
238  int f_code; ///< forward MV resolution
239  int b_code; ///< backward MV resolution for B-frames (MPEG-4)
240  int16_t (*p_mv_table_base)[2];
241  int16_t (*b_forw_mv_table_base)[2];
242  int16_t (*b_back_mv_table_base)[2];
245  int16_t (*b_direct_mv_table_base)[2];
246  int16_t (*p_field_mv_table_base[2][2])[2];
247  int16_t (*b_field_mv_table_base[2][2][2])[2];
248  int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame encoding
249  int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame encoding
250  int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame encoding
251  int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
252  int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
253  int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame encoding
254  int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced P-frame encoding
255  int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame encoding
258  int motion_est; ///< ME algorithm
260  int me_pre; ///< prepass for motion estimation
261  int mv_dir;
262 #define MV_DIR_FORWARD 1
263 #define MV_DIR_BACKWARD 2
264 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4)
265  int mv_type;
266 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
267 #define MV_TYPE_8X8 1 ///< 4 vectors (H.263, MPEG-4 4MV)
268 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
269 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
270 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
271  /**motion vectors for a macroblock
272  first coordinate : 0 = forward 1 = backward
273  second " : depend on type
274  third " : 0 = x, 1 = y
275  */
276  int mv[2][4][2];
277  int field_select[2][2];
278  int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
279  uint8_t *fcode_tab; ///< smallest fcode needed for each MV
280  int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
281 
283 
284  int no_rounding; /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
285  for B-frames rounding mode is always 0 */
286 
287  /* macroblock layer */
288  int mb_x, mb_y;
290  int mb_intra;
291  uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
292 
293  int block_index[6]; ///< index to current MB in block based arrays with edges
294  int block_wrap[6];
296 
297  int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
298 
299  /** matrix transmitted in the bitstream */
300  uint16_t intra_matrix[64];
301  uint16_t chroma_intra_matrix[64];
302  uint16_t inter_matrix[64];
303  uint16_t chroma_inter_matrix[64];
304  int force_duplicated_matrix; ///< Force duplication of mjpeg matrices, useful for rtp streaming
305 
306  int intra_quant_bias; ///< bias for the quantizer
307  int inter_quant_bias; ///< bias for the quantizer
308  int min_qcoeff; ///< minimum encodable coefficient
309  int max_qcoeff; ///< maximum encodable coefficient
310  int ac_esc_length; ///< num of bits needed to encode the longest esc
318 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
319 
320  int coded_score[12];
321 
322  /** precomputed matrix (combine qscale and DCT renorm) */
326  /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
327  uint16_t (*q_intra_matrix16)[2][64];
328  uint16_t (*q_chroma_intra_matrix16)[2][64];
329  uint16_t (*q_inter_matrix16)[2][64];
330 
331  /* noise reduction */
333  int dct_count[2];
334  uint16_t (*dct_offset)[64];
335 
336  /* bit rate control */
337  int64_t total_bits;
338  int frame_bits; ///< bits used for the current frame
339  int stuffing_bits; ///< bits used for stuffing
340  int next_lambda; ///< next lambda used for retrying to encode a frame
341  RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
342 
343  /* statistics, used for 2-pass encoding */
344  int mv_bits;
348  int i_count;
349  int f_count;
350  int b_count;
352  int misc_bits; ///< cbp, mb_type
353  int last_bits; ///< temp var used for calculating the above vars
354 
355  /* error concealment / resync */
356  int resync_mb_x; ///< x position of last resync marker
357  int resync_mb_y; ///< y position of last resync marker
358  GetBitContext last_resync_gb; ///< used to search for the next resync marker
359  int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
360  int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed B-frames
361 
363 
364  /* H.263 specific */
366  int obmc; ///< overlapped block motion compensation
367  int mb_info; ///< interval for outputting info about mb offsets as side data
371  int ehc_mode;
372  int rc_strategy; ///< deprecated
373 
374  /* H.263+ specific */
375  int umvplus; ///< == H.263+ && unrestricted_mv
376  int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
378  int alt_inter_vlc; ///< alternative inter vlc
382 
383  /* MPEG-4 specific */
386  ///< number of bits to represent the fractional part of time (encoder only)
389  int time_base; ///< time in seconds of last I,P,S Frame
390  int64_t time; ///< time of current frame
392  uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
393  uint16_t pb_time; ///< time distance between the last b and p,s,i frame
394  uint16_t pp_field_time;
395  uint16_t pb_field_time; ///< like above, just for interlaced
397  int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
398  int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
399  int mcsel;
401  int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
402  int aspect_ratio_info; //FIXME remove
404  int data_partitioning; ///< data partitioning flag from header
405  int partitioned_frame; ///< is current frame partitioned
406  int low_delay; ///< no reordering needed / has no B-frames
407  int vo_type;
408  PutBitContext tex_pb; ///< used for data partitioned VOPs
409  PutBitContext pb2; ///< used for data partitioned VOPs
411  int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG-4
412 
413  /* divx specific, used to workaround (many) bugs in divx5 */
415  uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
418 
419  /* RV10 specific */
420  int rv10_version; ///< RV10 version: 0 or 3
422 
423  /* MJPEG specific */
425  int esc_pos;
426  int pred;
427  int huffman;
428 
429  /* MSMPEG4 specific */
435  int slice_height; ///< in macroblocks
436  int first_slice_line; ///< used in MPEG-4 too to handle resync markers
438  int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
442  /** [mb_intra][isChroma][level][run][last] */
443  int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
445  int mspel;
446 
447  /* decompression specific */
449 
450  /* MPEG-1 specific */
451  int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & MPEG-1 specific
452  int last_mv_dir; ///< last mv_dir, used for B-frame encoding
453  uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
454 
455  /* MPEG-2-specific - I wished not to have to support this mess. */
457  int mpeg_f_code[2][2];
458 
459  // picture structure defines are loaded from mpegutils.h
461 
462  int64_t timecode_frame_start; ///< GOP timecode frame start number, in non drop frame format
473 #define VIDEO_FORMAT_COMPONENT 0
474 #define VIDEO_FORMAT_PAL 1
475 #define VIDEO_FORMAT_NTSC 2
476 #define VIDEO_FORMAT_SECAM 3
477 #define VIDEO_FORMAT_MAC 4
478 #define VIDEO_FORMAT_UNSPECIFIED 5
482 #define CHROMA_420 1
483 #define CHROMA_422 2
484 #define CHROMA_444 3
485  int chroma_x_shift;//depend on pix_format, that depend on chroma_format
487 
489  int full_pel[2];
491  int first_field; ///< is 1 for the first field of a field picture 0 otherwise
492  int drop_frame_timecode; ///< timecode is in drop frame format.
493  int scan_offset; ///< reserve space for SVCD scan offset user data.
494 
495  /* RTP specific */
496  int rtp_mode;
498 
499  char *tc_opt_str; ///< timecode option string
500  AVTimecode tc; ///< timecode context
501 
503  int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
504  int pack_pblocks; //xvmc needs to keep blocks without gaps.
505  int16_t (*pblocks[12])[64];
506 
507  int16_t (*block)[64]; ///< points to one of the following blocks
508  int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
509  int (*decode_mb)(struct MpegEncContext *s, int16_t block[12][64]); // used by some codecs to avoid a switch()
510 
511  int32_t (*block32)[12][64];
512 
513 #define SLICE_OK 0
514 #define SLICE_ERROR -1
515 #define SLICE_END -2 ///<end marker found
516 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
517 
519  int16_t *block/*align 16*/, int n, int qscale);
521  int16_t *block/*align 16*/, int n, int qscale);
523  int16_t *block/*align 16*/, int n, int qscale);
525  int16_t *block/*align 16*/, int n, int qscale);
527  int16_t *block/*align 16*/, int n, int qscale);
529  int16_t *block/*align 16*/, int n, int qscale);
530  void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
531  int16_t *block/*align 16*/, int n, int qscale);
532  void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
533  int16_t *block/*align 16*/, int n, int qscale);
534  int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
535  int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
536  void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
537 
538  int mpv_flags; ///< flags set by private options
540 
541  /**
542  * ratecontrol qmin qmax limiting method
543  * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
544  */
545  float rc_qsquish;
546  float rc_qmod_amp;
551  int lmin, lmax;
553 
554  char *rc_eq;
555 
556  /* temp buffers for rate control */
557  float *cplx_tab, *bits_tab;
558 
559  /* flag to indicate a reinitialization is required, e.g. after
560  * a frame size change */
562 
564 
566 
567  /* temporary frames used by b_frame_strategy = 2 */
571 
572  /* frame skip options for encoding */
577 
581 
582 /* mpegvideo_enc common options */
583 #define FF_MPV_FLAG_SKIP_RD 0x0001
584 #define FF_MPV_FLAG_STRICT_GOP 0x0002
585 #define FF_MPV_FLAG_QP_RD 0x0004
586 #define FF_MPV_FLAG_CBP_RD 0x0008
587 #define FF_MPV_FLAG_NAQ 0x0010
588 #define FF_MPV_FLAG_MV0 0x0020
589 
590 #define FF_MPV_OPT_CMP_FUNC \
591 { "sad", "Sum of absolute differences, fast", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
592 { "sse", "Sum of squared errors", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
593 { "satd", "Sum of absolute Hadamard transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SATD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
594 { "dct", "Sum of absolute DCT transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
595 { "psnr", "Sum of squared quantization errors, low quality", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_PSNR }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
596 { "bit", "Number of bits needed for the block", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_BIT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
597 { "rd", "Rate distortion optimal, slow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_RD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
598 { "zero", "Zero", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_ZERO }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
599 { "vsad", "Sum of absolute vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
600 { "vsse", "Sum of squared vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
601 { "nsse", "Noise preserving sum of squared differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
602 { "dct264", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT264 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
603 { "dctmax", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
604 { "chroma", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
605 { "msad", "Sum of absolute differences, median predicted", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_MEDIAN_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }
606 
607 #ifndef FF_MPV_OFFSET
608 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
609 #endif
610 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
611 #define FF_MPV_COMMON_OPTS \
612 FF_MPV_OPT_CMP_FUNC, \
613 { "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" },\
614 { "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" },\
615 { "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" },\
616 { "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" },\
617 { "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" },\
618 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
619 { "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
620 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
621  FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
622 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
623  FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
624 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
625 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
626  FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
627 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
628  FF_MPV_OFFSET(rc_qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
629 {"rc_qmod_amp", "experimental quantizer modulation", FF_MPV_OFFSET(rc_qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
630 {"rc_qmod_freq", "experimental quantizer modulation", FF_MPV_OFFSET(rc_qmod_freq), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS}, \
631 {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
632  "defined in the section 'Expression Evaluation', the following functions are available: " \
633  "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
634  "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
635  FF_MPV_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
636 {"rc_init_cplx", "initial complexity for 1-pass encoding", FF_MPV_OFFSET(rc_initial_cplx), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
637 {"rc_buf_aggressivity", "currently useless", FF_MPV_OFFSET(rc_buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
638 {"border_mask", "increase the quantizer for macroblocks close to borders", FF_MPV_OFFSET(border_masking), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
639 {"lmin", "minimum Lagrange factor (VBR)", FF_MPV_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
640 {"lmax", "maximum Lagrange factor (VBR)", FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
641 {"ibias", "intra quant bias", FF_MPV_OFFSET(intra_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
642 {"pbias", "inter quant bias", FF_MPV_OFFSET(inter_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
643 {"rc_strategy", "ratecontrol method", FF_MPV_OFFSET(rc_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED, "rc_strategy" }, \
644  { "ffmpeg", "deprecated, does nothing", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED, "rc_strategy" }, \
645  { "xvid", "deprecated, does nothing", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FF_MPV_OPT_FLAGS | AV_OPT_FLAG_DEPRECATED, "rc_strategy" }, \
646 {"motion_est", "motion estimation algorithm", FF_MPV_OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, "motion_est" }, \
647 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
648 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
649 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
650 { "force_duplicated_matrix", "Always write luma and chroma matrix for mjpeg, useful for rtp streaming.", FF_MPV_OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS }, \
651 {"b_strategy", "Strategy to choose between I/P/B-frames", FF_MPV_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
652 {"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1", FF_MPV_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
653 {"brd_scale", "Downscale frames for dynamic B-frame decision", FF_MPV_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS }, \
654 {"skip_threshold", "Frame skip threshold", FF_MPV_OFFSET(frame_skip_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
655 {"skip_factor", "Frame skip factor", FF_MPV_OFFSET(frame_skip_factor), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
656 {"skip_exp", "Frame skip exponent", FF_MPV_OFFSET(frame_skip_exp), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
657 {"skip_cmp", "Frame skip compare function", FF_MPV_OFFSET(frame_skip_cmp), AV_OPT_TYPE_INT, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "cmp_func" }, \
658 {"sc_threshold", "Scene change threshold", FF_MPV_OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
659 {"noise_reduction", "Noise reduction", FF_MPV_OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
660 {"mpeg_quant", "Use MPEG quantizers instead of H.263", FF_MPV_OFFSET(mpeg_quant), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS }, \
661 {"ps", "RTP payload size in bytes", FF_MPV_OFFSET(rtp_payload_size), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
662 {"mepc", "Motion estimation bitrate penalty compensation (1.0 = 256)", FF_MPV_OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
663 {"mepre", "pre motion estimation", FF_MPV_OFFSET(me_pre), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
664 
665 extern const AVOption ff_mpv_generic_options[];
666 
667 /**
668  * Set the given MpegEncContext to common defaults (same for encoding
669  * and decoding). The changed fields will not depend upon the prior
670  * state of the MpegEncContext.
671  */
673 
675 
683 
686 
689 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64]);
691 
694 
697 
700  const AVFrame *frame, int *got_packet);
701 int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase);
702 
704 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
706 
708 
709 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
710 
711 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
712 
715 void ff_set_qscale(MpegEncContext * s, int qscale);
716 
719 void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
720  const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
721 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
722 void ff_block_permute(int16_t *block, uint8_t *permutation,
723  const uint8_t *scantable, int last);
725 
727  uint8_t *dest_y, uint8_t *dest_cb,
728  uint8_t *dest_cr, int dir,
729  uint8_t **ref_picture,
730  op_pixels_func (*pix_op)[4],
731  qpel_mc_func (*qpix_op)[16]);
732 
733 static inline void ff_update_block_index(MpegEncContext *s){
734  const int bytes_per_pixel = 1 + (s->avctx->bits_per_raw_sample > 8);
735  const int block_size= (8*bytes_per_pixel) >> s->avctx->lowres;
736 
737  s->block_index[0]+=2;
738  s->block_index[1]+=2;
739  s->block_index[2]+=2;
740  s->block_index[3]+=2;
741  s->block_index[4]++;
742  s->block_index[5]++;
743  s->dest[0]+= 2*block_size;
744  s->dest[1]+= (2 >> s->chroma_x_shift) * block_size;
745  s->dest[2]+= (2 >> s->chroma_x_shift) * block_size;
746 }
747 
748 static inline int get_bits_diff(MpegEncContext *s){
749  const int bits= put_bits_count(&s->pb);
750  const int last= s->last_bits;
751 
752  s->last_bits = bits;
753 
754  return bits - last;
755 }
756 
757 static inline int mpeg_get_qscale(MpegEncContext *s)
758 {
759  int qscale = get_bits(&s->gb, 5);
760  if (s->q_scale_type)
762  else
763  return qscale << 1;
764 }
765 
766 #endif /* AVCODEC_MPEGVIDEO_H */
int last_time_base
Definition: mpegvideo.h:388
int bitstream_buffer_size
Definition: mpegvideo.h:416
int inter_intra_pred
Definition: mpegvideo.h:444
int chroma_elim_threshold
Definition: mpegvideo.h:117
int rv10_first_dc_coded[3]
Definition: mpegvideo.h:421
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:338
IDCTDSPContext idsp
Definition: mpegvideo.h:230
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
Definition: mpegvideo.h:341
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:244
int64_t timecode_frame_start
GOP timecode frame start number, in non drop frame format.
Definition: mpegvideo.h:462
int aspect_ratio_info
Definition: mpegvideo.h:402
int picture_number
Definition: mpegvideo.h:127
Holds JPEG frame data and Huffman table data.
Definition: mjpegenc.h:59
ScanTable intra_v_scantable
Definition: mpegvideo.h:93
rate control context.
Definition: ratecontrol.h:63
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:532
int esc3_level_length
Definition: mpegvideo.h:440
int time_increment_bits
Definition: mpegvideo.h:387
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:248
AVOption.
Definition: opt.h:246
uint8_t * fcode_tab
smallest fcode needed for each MV
Definition: mpegvideo.h:279
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:153
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:188
int sprite_warping_accuracy
Definition: mpegvideo.h:403
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
Definition: mpegvideo.h:278
int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:885
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2233
AVFrame * tmp_frames[MAX_B_FRAMES+2]
Definition: mpegvideo.h:568
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:269
uint8_t * coded_block_base
Definition: mpegvideo.h:191
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:154
uint16_t(* q_chroma_intra_matrix16)[2][64]
Definition: mpegvideo.h:328
uint16_t chroma_intra_matrix[64]
Definition: mpegvideo.h:301
int16_t(*[3] ac_val)[16]
used for MPEG-4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:194
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:132
uint16_t chroma_inter_matrix[64]
Definition: mpegvideo.h:303
void ff_mpv_frame_end(MpegEncContext *s)
Definition: mpegvideo.c:1422
int frame_skip_cmp
Definition: mpegvideo.h:576
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2214
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:438
int b_frame_strategy
Definition: mpegvideo.h:569
Scantable.
Definition: idctdsp.h:31
uint8_t * bitstream_buffer
Definition: mpegvideo.h:415
enum AVCodecID codec_id
Definition: mpegvideo.h:112
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:2297
int obmc
overlapped block motion compensation
Definition: mpegvideo.h:366
int frame_skip_exp
Definition: mpegvideo.h:575
void ff_convert_matrix(MpegEncContext *s, 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:90
int scan_offset
reserve space for SVCD scan offset user data.
Definition: mpegvideo.h:493
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:254
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:240
int min_qcoeff
minimum encodable coefficient
Definition: mpegvideo.h:308
int studio_profile
Definition: mpegvideo.h:384
int real_sprite_warping_points
Definition: mpegvideo.h:396
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
int coded_score[12]
Definition: mpegvideo.h:320
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:1902
int mpv_flags
flags set by private options
Definition: mpegvideo.h:538
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2743
uint8_t * intra_ac_vlc_length
Definition: mpegvideo.h:311
int padding_bug_score
used to detect the VERY common padding bug in MPEG-4
Definition: mpegvideo.h:411
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:133
#define src
Definition: vp8dsp.c:254
QpelDSPContext qdsp
Definition: mpegvideo.h:235
int time_base
time in seconds of last I,P,S Frame
Definition: mpegvideo.h:389
int qscale
QP.
Definition: mpegvideo.h:204
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:87
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:250
int chroma_x_shift
Definition: mpegvideo.h:485
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:114
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:526
int field_select[2][2]
Definition: mpegvideo.h:277
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:530
int block_wrap[6]
Definition: mpegvideo.h:294
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:242
int quant_precision
Definition: mpegvideo.h:400
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:528
int modified_quant
Definition: mpegvideo.h:379
int skipdct
skip dct and code zero residual
Definition: mpegvideo.h:220
float rc_buffer_aggressivity
Definition: mpegvideo.h:549
#define MAX_THREADS
Definition: mpegvideo.h:62
const uint8_t ff_mpeg2_non_linear_qscale[32]
Definition: mpegvideodata.c:27
static int16_t block[64]
Definition: dct.c:115
int picture_in_gop_number
0-> first pic in gop, ...
Definition: mpegvideo.h:128
int esc3_run_length
Definition: mpegvideo.h:441
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:378
uint8_t * ptr_lastgob
Definition: mpegvideo.h:502
int mb_num_left
number of MBs left in this video packet (for partitioned Slices only)
Definition: mpegvideo.h:359
int64_t time
time of current frame
Definition: mpegvideo.h:390
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
Permute an 8x8 block according to permutation.
int context_reinit
Definition: mpegvideo.h:561
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:85
AVRational mpeg2_frame_rate_ext
Definition: mpegvideo.h:218
int16_t * dc_val_base
Definition: mpegvideo.h:186
OutputFormat
Definition: mpegutils.h:123
ScratchpadContext sc
Definition: mpegvideo.h:202
uint8_t
Picture ** input_picture
next pictures on display order for encoding
Definition: mpegvideo.h:137
AVOptions.
void(* denoise_dct)(struct MpegEncContext *s, int16_t *block)
Definition: mpegvideo.h:536
PutBitContext pb2
used for data partitioned VOPs
Definition: mpegvideo.h:409
enum OutputFormat out_format
output format
Definition: mpegvideo.h:104
#define f(width, name)
Definition: cbs_vp9.c:255
uint16_t(* dct_offset)[64]
Definition: mpegvideo.h:334
int noise_reduction
Definition: mpegvideo.h:579
void ff_dct_encode_init_x86(MpegEncContext *s)
Definition: mpegvideoenc.c:213
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 * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:200
Multithreading support functions.
Motion estimation context.
Definition: motion_est.h:47
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2226
int frame_skip_threshold
Definition: mpegvideo.h:573
int force_duplicated_matrix
Force duplication of mjpeg matrices, useful for rtp streaming.
Definition: mpegvideo.h:304
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:352
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
int full_pel[2]
Definition: mpegvideo.h:489
int interlaced_dct
Definition: mpegvideo.h:490
int(* q_chroma_intra_matrix)[64]
Definition: mpegvideo.h:324
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
GetBitContext last_resync_gb
used to search for the next resync marker
Definition: mpegvideo.h:358
int intra_dc_precision
Definition: mpegvideo.h:463
int repeat_first_field
Definition: mpegvideo.h:479
void ff_mpv_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:43
static AVFrame * frame
quarterpel DSP functions
void ff_mpv_common_init_ppc(MpegEncContext *s)
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:251
float * cplx_tab
Definition: mpegvideo.h:557
bitstream reader API header.
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:392
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2751
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:120
int max_qcoeff
maximum encodable coefficient
Definition: mpegvideo.h:309
int16_t(*[2][2] p_field_mv_table_base)[2]
Definition: mpegvideo.h:246
int scenechange_threshold
Definition: mpegvideo.h:578
#define MAX_LEVEL
Definition: rl.h:36
int flipflop_rounding
Definition: mpegvideo.h:437
int dquant
qscale difference to prev qscale
Definition: mpegvideo.h:210
int gop_picture_number
index of the first picture of a GOP based on fake_pic_num & MPEG-1 specific
Definition: mpegvideo.h:451
uint8_t * mb_info_ptr
Definition: mpegvideo.h:369
static void ff_update_block_index(MpegEncContext *s)
Definition: mpegvideo.h:733
int sprite_offset[2][2]
sprite offset[isChroma][isMVY]
Definition: mpegvideo.h:397
int(* q_inter_matrix)[64]
Definition: mpegvideo.h:325
static int get_bits_diff(MpegEncContext *s)
Definition: mpegvideo.h:748
int(* q_intra_matrix)[64]
precomputed matrix (combine qscale and DCT renorm)
Definition: mpegvideo.h:323
int intra_only
if true, only intra pictures are generated
Definition: mpegvideo.h:102
int16_t * dc_val[3]
used for MPEG-4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:187
int h263_plus
H.263+ headers.
Definition: mpegvideo.h:109
H263DSPContext h263dsp
Definition: mpegvideo.h:237
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:156
int last_non_b_pict_type
used for MPEG-4 gmc B-frames & ratecontrol
Definition: mpegvideo.h:215
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
int last_dc[3]
last DC values for MPEG-1
Definition: mpegvideo.h:185
int16_t direct_scale_mv[2][64]
precomputed to avoid divisions in ff_mpeg4_set_direct_mv
Definition: mpegvideo.h:280
uint8_t * inter_ac_vlc_last_length
Definition: mpegvideo.h:316
int rl_chroma_table_index
Definition: mpegvideo.h:432
int64_t total_bits
Definition: mpegvideo.h:337
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:195
int rc_strategy
deprecated
Definition: mpegvideo.h:372
int chroma_y_shift
Definition: mpegvideo.h:486
int strict_std_compliance
strictly follow the std (MPEG-4, ...)
Definition: mpegvideo.h:118
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:405
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1124
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:223
ERContext er
Definition: mpegvideo.h:563
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:219
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:524
PixblockDSPContext pdsp
Definition: mpegvideo.h:234
int per_mb_rl_table
Definition: mpegvideo.h:439
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:518
uint8_t * intra_chroma_ac_vlc_length
Definition: mpegvideo.h:313
int h263_slice_structured
Definition: mpegvideo.h:377
MpegvideoEncDSPContext mpvencdsp
Definition: mpegvideo.h:233
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:401
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:291
int me_pre
prepass for motion estimation
Definition: mpegvideo.h:260
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:406
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
Definition: mpegvideo.c:462
GetBitContext gb
Definition: mpegvideo.h:448
uint8_t *[2][2] b_field_select_table
Definition: mpegvideo.h:257
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
int resync_mb_x
x position of last resync marker
Definition: mpegvideo.h:356
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:126
int * lambda_table
Definition: mpegvideo.h:208
void ff_mpv_common_init_mips(MpegEncContext *s)
int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase)
int dct_precision
number of bits to represent the fractional part of time (encoder only)
Definition: mpegvideo.h:385
void ff_mpv_common_init_neon(MpegEncContext *s)
Definition: mpegvideo.c:126
uint8_t * intra_ac_vlc_last_length
Definition: mpegvideo.h:312
int sprite_delta[2][2]
sprite_delta [isY][isMVY]
Definition: mpegvideo.h:398
int intra_vlc_format
Definition: mpegvideo.h:469
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
Half-pel DSP context.
Definition: hpeldsp.h:45
float border_masking
Definition: mpegvideo.h:550
int progressive_frame
Definition: mpegvideo.h:488
int top_field_first
Definition: mpegvideo.h:465
int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
generic function called after decoding the header and before a frame is decoded.
Definition: mpegvideo.c:1198
uint16_t(* q_inter_matrix16)[2][64]
Definition: mpegvideo.h:329
uint8_t * vbv_delay_ptr
pointer to vbv_delay in the bitstream
Definition: mpegvideo.h:453
int fixed_qscale
fixed qscale if non zero
Definition: mpegvideo.h:113
int next_p_frame_damaged
set if the next p frame is damaged, to avoid showing trashed B-frames
Definition: mpegvideo.h:360
int umvplus
== H.263+ && unrestricted_mv
Definition: mpegvideo.h:375
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:174
int intra_quant_bias
bias for the quantizer
Definition: mpegvideo.h:306
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:196
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:470
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:417
int16_t(* ac_val_base)[16]
Definition: mpegvideo.h:193
int32_t
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:327
#define s(width, name)
Definition: cbs_vp9.c:257
int16_t(*[2][2][2] b_field_mv_table_base)[2]
Definition: mpegvideo.h:247
int(* ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]
[mb_intra][isChroma][level][run][last]
Definition: mpegvideo.h:443
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:241
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:505
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:86
MotionEstContext me
Definition: mpegvideo.h:282
int frame_skip_factor
Definition: mpegvideo.h:574
int n
Definition: avisynth_c.h:684
int pb_frame
PB-frame mode (0 = none, 1 = base, 2 = improved)
Definition: mpegvideo.h:106
int mpeg_f_code[2][2]
Definition: mpegvideo.h:457
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:198
#define MAX_B_FRAMES
Definition: mpegvideo.h:64
void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
Definition: mpegvideo.c:669
int ac_esc_length
num of bits needed to encode the longest esc
Definition: mpegvideo.h:310
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:293
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:2266
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:297
void ff_mpv_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:454
struct MJpegContext * mjpeg_ctx
Definition: mpegvideo.h:424
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:491
void ff_mpv_idct_init(MpegEncContext *s)
Definition: mpegvideo.c:330
int first_slice_line
used in MPEG-4 too to handle resync markers
Definition: mpegvideo.h:436
int frame_pred_frame_dct
Definition: mpegvideo.h:464
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:243
Half-pel DSP functions.
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
uint8_t * luma_dc_vlc_length
Definition: mpegvideo.h:317
int64_t last_non_b_time
Definition: mpegvideo.h:391
int concealment_motion_vectors
Definition: mpegvideo.h:466
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:155
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:207
Libavcodec external API header.
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: mpegvideo.c:490
int h263_flv
use flv H.263 header
Definition: mpegvideo.h:110
char * tc_opt_str
timecode option string
Definition: mpegvideo.h:499
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:134
void ff_mpv_decode_defaults(MpegEncContext *s)
Set the given MpegEncContext to defaults for decoding.
Definition: mpegvideo.c:664
BlockDSPContext bdsp
Definition: mpegvideo.h:226
Timecode helpers header.
uint8_t * intra_chroma_ac_vlc_last_length
Definition: mpegvideo.h:314
main external API structure.
Definition: avcodec.h:1520
ScanTable intra_scantable
Definition: mpegvideo.h:91
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
Definition: mpegvideo.h:192
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:100
MPEG-1/2 tables.
int ff_dct_encode_init(MpegEncContext *s)
int64_t dts_delta
pts difference between the first and second input frame, used for calculating dts of the first frame ...
Definition: mpegvideo.h:144
int64_t user_specified_pts
last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
Definition: mpegvideo.h:140
FDCTDSPContext fdsp
Definition: mpegvideo.h:227
int chroma_420_type
Definition: mpegvideo.h:480
float rc_qmod_amp
Definition: mpegvideo.h:546
int ff_mpv_encode_init(AVCodecContext *avctx)
int luma_elim_threshold
Definition: mpegvideo.h:116
Picture * picture
main picture buffer
Definition: mpegvideo.h:136
int data_partitioning
data partitioning flag from header
Definition: mpegvideo.h:404
uint8_t * inter_ac_vlc_length
Definition: mpegvideo.h:315
int progressive_sequence
Definition: mpegvideo.h:456
Describe the class of an AVClass context structure.
Definition: log.h:67
int stuffing_bits
bits used for stuffing
Definition: mpegvideo.h:339
ScanTable intra_h_scantable
Definition: mpegvideo.h:92
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced B-frame encoding.
Definition: mpegvideo.h:255
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:199
int closed_gop
MPEG1/2 GOP is closed.
Definition: mpegvideo.h:211
Rational number (pair of numerator and denominator).
Definition: rational.h:58
void ff_mpv_common_init_axp(MpegEncContext *s)
int context_initialized
Definition: mpegvideo.h:124
int input_picture_number
used to set pic->display_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:125
int slice_height
in macroblocks
Definition: mpegvideo.h:435
int use_skip_mb_code
Definition: mpegvideo.h:434
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:135
int mb_info
interval for outputting info about mb offsets as side data
Definition: mpegvideo.h:367
int f_code
forward MV resolution
Definition: mpegvideo.h:238
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:115
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
quarterpel DSP context
Definition: qpeldsp.h:72
int last_mv_dir
last mv_dir, used for B-frame encoding
Definition: mpegvideo.h:452
int motion_est
ME algorithm.
Definition: mpegvideo.h:258
int h263_pred
use MPEG-4/H.263 ac/dc predictions
Definition: mpegvideo.h:105
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:252
uint8_t *[2] p_field_select_table
Definition: mpegvideo.h:256
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode B-frame encoding.
Definition: mpegvideo.h:253
uint16_t pb_field_time
like above, just for interlaced
Definition: mpegvideo.h:395
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:189
int me_penalty_compensation
Definition: mpegvideo.h:259
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:276
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode B-frame encoding.
Definition: mpegvideo.h:249
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:131
int vbv_ignore_qmax
Definition: mpegvideo.h:552
MpegEncContext.
Definition: mpegvideo.h:81
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:183
char * rc_eq
Definition: mpegvideo.h:554
#define MAX_RUN
Definition: rl.h:35
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
uint16_t pp_field_time
Definition: mpegvideo.h:394
PutBitContext pb
bit output
Definition: mpegvideo.h:151
int
MpegVideoDSPContext mdsp
Definition: mpegvideo.h:232
int quantizer_noise_shaping
Definition: mpegvideo.h:539
int(* dct_error_sum)[64]
Definition: mpegvideo.h:332
MECmpContext mecc
Definition: mpegvideo.h:231
float rc_initial_cplx
Definition: mpegvideo.h:548
static const int32_t qmat16[MAT_SIZE]
Definition: hq_hqadata.c:342
common internal api header.
int32_t(* block32)[12][64]
Definition: mpegvideo.h:511
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:130
uint8_t * dest[3]
Definition: mpegvideo.h:295
int last_pict_type
Definition: mpegvideo.h:214
int adaptive_quant
use adaptive quantization
Definition: mpegvideo.h:209
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:162
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:182
float rc_qsquish
ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continuous function to limit qscal...
Definition: mpegvideo.h:545
int64_t reordered_pts
reordered pts to be used as dts for the next output frame when there's a delay
Definition: mpegvideo.h:148
int ff_mpv_encode_end(AVCodecContext *avctx)
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (H.263)
Definition: mpegvideo.h:190
int ff_mpv_common_frame_size_change(MpegEncContext *s)
Definition: mpegvideo.c:1045
Core video DSP helper functions.
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:520
H264ChromaContext h264chroma
Definition: mpegvideo.h:228
int16_t(* blocks)[12][64]
Definition: mpegvideo.h:508
int last_bits
temp var used for calculating the above vars
Definition: mpegvideo.h:353
int frame_rate_index
Definition: mpegvideo.h:217
int picture_structure
Definition: mpegvideo.h:460
void ff_mpv_encode_init_x86(MpegEncContext *s)
VideoDSPContext vdsp
Definition: mpegvideo.h:236
int drop_frame_timecode
timecode is in drop frame format.
Definition: mpegvideo.h:492
int resync_mb_y
y position of last resync marker
Definition: mpegvideo.h:357
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:507
ParseContext parse_context
Definition: mpegvideo.h:362
ratecontrol header.
int64_t bit_rate
wanted bit rate
Definition: mpegvideo.h:103
PutBitContext tex_pb
used for data partitioned VOPs
Definition: mpegvideo.h:408
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:168
Picture ** reordered_input_picture
pointer to the next pictures in coded order for encoding
Definition: mpegvideo.h:138
int rl_table_index
Definition: mpegvideo.h:431
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
Definition: mpegvideo.c:1437
int chroma_qscale
chroma QP
Definition: mpegvideo.h:205
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
Definition: mpegvideo.c:1430
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:522
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:535
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
void ff_mpv_report_decode_progress(MpegEncContext *s)
Definition: mpegvideo.c:2311
int rv10_version
RV10 version: 0 or 3.
Definition: mpegvideo.h:420
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:119
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:90
int(* decode_mb)(struct MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.h:509
int rtp_payload_size
Definition: mpegvideo.h:497
static int mpeg_get_qscale(MpegEncContext *s)
Definition: mpegvideo.h:757
int h263_long_vectors
use horrible H.263v1 long vector mode
Definition: mpegvideo.h:224
int inter_quant_bias
bias for the quantizer
Definition: mpegvideo.h:307
int(* dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:534
int mv_table_index
Definition: mpegvideo.h:430
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:245
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:239
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
Definition: mpegvideo.h:376
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
float * bits_tab
Definition: mpegvideo.h:557
AVTimecode tc
timecode context
Definition: mpegvideo.h:500
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding). ...
Definition: mpegvideo.c:641
int dct_count[2]
Definition: mpegvideo.h:333
This structure stores compressed data.
Definition: avcodec.h:1409
int dc_table_index
Definition: mpegvideo.h:433
unsigned int lambda
Lagrange multiplier used in rate distortion.
Definition: mpegvideo.h:206
uint16_t pb_time
time distance between the last b and p,s,i frame
Definition: mpegvideo.h:393
HpelDSPContext hdsp
Definition: mpegvideo.h:229
int next_lambda
next lambda used for retrying to encode a frame
Definition: mpegvideo.h:340
bitstream writer API