FFmpeg
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 "blockdsp.h"
33 #include "error_resilience.h"
34 #include "fdctdsp.h"
35 #include "get_bits.h"
36 #include "h264chroma.h"
37 #include "h263dsp.h"
38 #include "hpeldsp.h"
39 #include "idctdsp.h"
40 #include "me_cmp.h"
41 #include "motion_est.h"
42 #include "mpegpicture.h"
43 #include "mpegvideoencdsp.h"
44 #include "pixblockdsp.h"
45 #include "put_bits.h"
46 #include "ratecontrol.h"
47 #include "mpegutils.h"
48 #include "qpeldsp.h"
49 #include "videodsp.h"
50 
51 #define MAX_THREADS 32
52 
53 #define MAX_B_FRAMES 16
54 
55 /**
56  * Scantable.
57  */
58 typedef struct ScanTable {
59  const uint8_t *scantable;
60  uint8_t permutated[64];
61  uint8_t raster_end[64];
62 } ScanTable;
63 
64 /**
65  * MpegEncContext.
66  */
67 typedef struct MpegEncContext {
68  AVClass *class;
69 
71  int ac_pred;
72  int block_last_index[12]; ///< last non zero coefficient in block
73  int h263_aic; ///< Advanced INTRA Coding (AIC)
74 
75  /* scantables */
76  ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce the cache usage
77 
78  /* WARNING: changes above this line require updates to hardcoded
79  * offsets used in ASM. */
80 
84 
86  /* The following pointer is intended for codecs sharing code
87  * between decoder and encoder and in need of a common context to do so. */
88  void *private_ctx;
89  /* the following parameters must be initialized before encoding */
90  int width, height;///< picture size. must be a multiple of 16
91  int gop_size;
92  int intra_only; ///< if true, only intra pictures are generated
93  int64_t bit_rate; ///< wanted bit rate
94  enum OutputFormat out_format; ///< output format
95  int h263_pred; ///< use MPEG-4/H.263 ac/dc predictions
96  int pb_frame; ///< PB-frame mode (0 = none, 1 = base, 2 = improved)
97 
98 /* the following codec id fields are deprecated in favor of codec_id */
99  int h263_plus; ///< H.263+ headers
100  int h263_flv; ///< use flv H.263 header
101 
102  enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
103  int fixed_qscale; ///< fixed qscale if non zero
104  int encoding; ///< true if we are encoding (vs decoding)
105  int max_b_frames; ///< max number of B-frames for encoding
108  int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
109  int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
110  /* the following fields are managed internally by the encoder */
111 
112  /* sequence parameters */
114  int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
115  int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
116  int picture_number; //FIXME remove, unclear definition
117  int picture_in_gop_number; ///< 0-> first pic in gop, ...
118  int mb_width, mb_height; ///< number of MBs horizontally & vertically
119  int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
120  int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
121  int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
122  int mb_num; ///< number of MBs of a picture
123  ptrdiff_t linesize; ///< line size, in bytes, may be different from width
124  ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
125  Picture *picture; ///< main picture buffer
126  Picture **input_picture; ///< next pictures on display order for encoding
127  Picture **reordered_input_picture; ///< pointer to the next pictures in coded order for encoding
128 
129  int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_send_frame()
130  /**
131  * pts difference between the first and second input frame, used for
132  * calculating dts of the first frame when there's a delay */
133  int64_t dts_delta;
134  /**
135  * reordered pts to be used as dts for the next output frame when there's
136  * a delay */
137  int64_t reordered_pts;
138 
139  /** bit output */
141 
142  int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
143  int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
145  int slice_context_count; ///< number of used thread_contexts
146 
147  /**
148  * copy of the previous picture structure.
149  * note, linesize & data, might not match the previous picture (for field pictures)
150  */
152 
153  /**
154  * copy of the next picture structure.
155  * note, linesize & data, might not match the next picture (for field pictures)
156  */
158 
159  /**
160  * Reference to the source picture for encoding.
161  * note, linesize & data, might not match the source picture (for field pictures)
162  */
164 
165  /**
166  * copy of the current picture structure.
167  * note, linesize & data, might not match the current picture (for field pictures)
168  */
169  Picture current_picture; ///< buffer to store the decompressed current picture
170 
171  Picture *last_picture_ptr; ///< pointer to the previous picture.
172  Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
173  Picture *current_picture_ptr; ///< pointer to the current picture
175  int last_dc[3]; ///< last DC values for MPEG-1
176  int16_t *dc_val_base;
177  int16_t *dc_val[3]; ///< used for MPEG-4 DC prediction, all 3 arrays must be continuous
178  const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
179  const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
180  const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (H.263)
182  uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
183  int16_t (*ac_val_base)[16];
184  int16_t (*ac_val[3])[16]; ///< used for MPEG-4 AC prediction, all 3 arrays must be continuous
185  int mb_skipped; ///< MUST BE SET only during DECODING
186  uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
187  and used for B-frame encoding & decoding (contains skip table of next P-frame) */
188  uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
189  uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
190  uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
191 
193 
194  int qscale; ///< QP
195  int chroma_qscale; ///< chroma QP
196  unsigned int lambda; ///< Lagrange multiplier used in rate distortion
197  unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
199  int adaptive_quant; ///< use adaptive quantization
200  int dquant; ///< qscale difference to prev qscale
201  int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
203  int last_pict_type; //FIXME removes
204  int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
206  int last_lambda_for[5]; ///< last lambda for a specific pict type
207  int skipdct; ///< skip dct and code zero residual
208 
209  /* motion compensation */
210  int unrestricted_mv; ///< mv can point outside of the coded picture
211  int h263_long_vectors; ///< use horrible H.263v1 long vector mode
212 
224  int f_code; ///< forward MV resolution
225  int b_code; ///< backward MV resolution for B-frames (MPEG-4)
226  int16_t (*p_mv_table_base)[2];
227  int16_t (*b_forw_mv_table_base)[2];
228  int16_t (*b_back_mv_table_base)[2];
231  int16_t (*b_direct_mv_table_base)[2];
232  int16_t (*p_field_mv_table_base)[2];
233  int16_t (*b_field_mv_table_base)[2];
234  int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame encoding
235  int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame encoding
236  int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame encoding
237  int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
238  int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
239  int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame encoding
240  int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced P-frame encoding
241  int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame encoding
242  uint8_t (*p_field_select_table[2]); ///< Only the first element is allocated
243  uint8_t (*b_field_select_table[2][2]); ///< Only the first element is allocated
244 
245  /* The following fields are encoder-only */
246  uint16_t *mb_var; ///< Table for MB variances
247  uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
248  uint8_t *mb_mean; ///< Table for MB luminance
249  int64_t mb_var_sum; ///< sum of MB variance for current frame
250  int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
252 
253  int motion_est; ///< ME algorithm
255  int me_pre; ///< prepass for motion estimation
256  int mv_dir;
257 #define MV_DIR_FORWARD 1
258 #define MV_DIR_BACKWARD 2
259 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4)
260  int mv_type;
261 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
262 #define MV_TYPE_8X8 1 ///< 4 vectors (H.263, MPEG-4 4MV)
263 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
264 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
265 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
266  /**motion vectors for a macroblock
267  first coordinate : 0 = forward 1 = backward
268  second " : depend on type
269  third " : 0 = x, 1 = y
270  */
271  int mv[2][4][2];
272  int field_select[2][2];
273  int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
274  const uint8_t *fcode_tab; ///< smallest fcode needed for each MV
275  int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
276 
278 
279  int no_rounding; /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
280  for B-frames rounding mode is always 0 */
281 
282  /* macroblock layer */
283  int mb_x, mb_y;
285  int mb_intra;
286  uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
287 
288  int block_index[6]; ///< index to current MB in block based arrays with edges
289  int block_wrap[6];
290  uint8_t *dest[3];
291 
292  int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
293 
294  /** matrix transmitted in the bitstream */
295  uint16_t intra_matrix[64];
296  uint16_t chroma_intra_matrix[64];
297  uint16_t inter_matrix[64];
298  uint16_t chroma_inter_matrix[64];
299 
300  int intra_quant_bias; ///< bias for the quantizer
301  int inter_quant_bias; ///< bias for the quantizer
302  int min_qcoeff; ///< minimum encodable coefficient
303  int max_qcoeff; ///< maximum encodable coefficient
304  int ac_esc_length; ///< num of bits needed to encode the longest esc
312 
313  int coded_score[12];
314 
315  /** precomputed matrix (combine qscale and DCT renorm) */
319  /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
320  uint16_t (*q_intra_matrix16)[2][64];
321  uint16_t (*q_chroma_intra_matrix16)[2][64];
322  uint16_t (*q_inter_matrix16)[2][64];
323 
324  /* noise reduction */
326  int dct_count[2];
327  uint16_t (*dct_offset)[64];
328 
329  /* bit rate control */
330  int64_t total_bits;
331  int frame_bits; ///< bits used for the current frame
332  int stuffing_bits; ///< bits used for stuffing
333  int next_lambda; ///< next lambda used for retrying to encode a frame
334  RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
335 
336  /* statistics, used for 2-pass encoding */
337  int mv_bits;
341  int i_count;
343  int misc_bits; ///< cbp, mb_type
344  int last_bits; ///< temp var used for calculating the above vars
345 
346  /* error concealment / resync */
347  int resync_mb_x; ///< x position of last resync marker
348  int resync_mb_y; ///< y position of last resync marker
349  GetBitContext last_resync_gb; ///< used to search for the next resync marker
350  int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
351 
352  /* H.263 specific */
354  int obmc; ///< overlapped block motion compensation
355  int mb_info; ///< interval for outputting info about mb offsets as side data
357  uint8_t *mb_info_ptr;
359  int ehc_mode;
360 
361  /* H.263+ specific */
362  int umvplus; ///< == H.263+ && unrestricted_mv
363  int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
365  int alt_inter_vlc; ///< alternative inter vlc
369 
370  /* MPEG-4 specific */
373  ///< number of bits to represent the fractional part of time (encoder only)
376  int time_base; ///< time in seconds of last I,P,S Frame
377  int64_t time; ///< time of current frame
379  uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
380  uint16_t pb_time; ///< time distance between the last b and p,s,i frame
381  uint16_t pp_field_time;
382  uint16_t pb_field_time; ///< like above, just for interlaced
383  int mcsel;
385  int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
386  int data_partitioning; ///< data partitioning flag from header
387  int partitioned_frame; ///< is current frame partitioned
388  int low_delay; ///< no reordering needed / has no B-frames
389  PutBitContext tex_pb; ///< used for data partitioned VOPs
390  PutBitContext pb2; ///< used for data partitioned VOPs
392  int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG-4
393 
394  /* divx specific, used to workaround (many) bugs in divx5 */
396  uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
399 
400  /* RV10 specific */
401  int rv10_version; ///< RV10 version: 0 or 3
403 
404  /* MJPEG specific */
406  int esc_pos;
407 
408  /* MSMPEG4 specific */
414  int slice_height; ///< in macroblocks
415  int first_slice_line; ///< used in MPEG-4 too to handle resync markers
417  int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
422  int mspel;
423 
424  /* decompression specific */
426 
427  /* MPEG-1 specific */
428  int last_mv_dir; ///< last mv_dir, used for B-frame encoding
429  int vbv_delay_pos; ///< offset of vbv_delay in the bitstream
430 
431  /* MPEG-2-specific - I wished not to have to support this mess. */
433  int mpeg_f_code[2][2];
434 
435  // picture structure defines are loaded from mpegutils.h
437 
449 #define CHROMA_420 1
450 #define CHROMA_422 2
451 #define CHROMA_444 3
452  int chroma_x_shift;//depend on pix_format, that depend on chroma_format
454 
456  int full_pel[2];
458  int first_field; ///< is 1 for the first field of a field picture 0 otherwise
459 
460  /* RTP specific */
461  int rtp_mode;
463 
464  uint8_t *ptr_lastgob;
465  int16_t (*pblocks[12])[64];
466 
467  int16_t (*block)[64]; ///< points to one of the following blocks
468  int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
469  int (*decode_mb)(struct MpegEncContext *s, int16_t block[12][64]); // used by some codecs to avoid a switch()
470 
471 #define SLICE_OK 0
472 #define SLICE_ERROR -1
473 #define SLICE_END -2 ///<end marker found
474 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
475 
477  int16_t *block/*align 16*/, int n, int qscale);
479  int16_t *block/*align 16*/, int n, int qscale);
481  int16_t *block/*align 16*/, int n, int qscale);
483  int16_t *block/*align 16*/, int n, int qscale);
485  int16_t *block/*align 16*/, int n, int qscale);
487  int16_t *block/*align 16*/, int n, int qscale);
488  void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
489  int16_t *block/*align 16*/, int n, int qscale);
490  void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
491  int16_t *block/*align 16*/, int n, int qscale);
492  int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
493  int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
494  void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
495 
496  int mpv_flags; ///< flags set by private options
498 
499  /**
500  * ratecontrol qmin qmax limiting method
501  * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
502  */
503  float rc_qsquish;
504  float rc_qmod_amp;
509  int lmin, lmax;
511 
512  char *rc_eq;
513 
514  /* temp buffers for rate control */
515  float *cplx_tab, *bits_tab;
516 
517  /* flag to indicate a reinitialization is required, e.g. after
518  * a frame size change */
520 
522 
524 
525  /* temporary frames used by b_frame_strategy = 2 */
529 
530  /* frame skip options for encoding */
535 
538 
541 
542 
543 /**
544  * Set the given MpegEncContext to common defaults (same for encoding
545  * and decoding). The changed fields will not depend upon the prior
546  * state of the MpegEncContext.
547  */
549 
557 /**
558  * Initialize an MpegEncContext's thread contexts. Presumes that
559  * slice_context_count is already set and that all the fields
560  * that are freed/reset in free_duplicate_context() are NULL.
561  */
563 /**
564  * Initialize and allocates MpegEncContext fields dependent on the resolution.
565  */
567 /**
568  * Frees and resets MpegEncContext fields depending on the resolution
569  * as well as the slice thread contexts.
570  * Is used during resolution changes to avoid a full reinitialization of the
571  * codec.
572  */
574 
576 
578 
580 void ff_set_qscale(MpegEncContext * s, int qscale);
581 
583 void ff_init_scantable(const uint8_t *permutation, ScanTable *st,
584  const uint8_t *src_scantable);
586 
588  uint8_t *dest_y, uint8_t *dest_cb,
589  uint8_t *dest_cr, int dir,
590  uint8_t *const *ref_picture,
591  op_pixels_func (*pix_op)[4],
592  qpel_mc_func (*qpix_op)[16]);
593 
594 static inline void ff_update_block_index(MpegEncContext *s, int bits_per_raw_sample,
595  int lowres, int chroma_x_shift)
596 {
597  const int bytes_per_pixel = 1 + (bits_per_raw_sample > 8);
598  const int block_size = (8 * bytes_per_pixel) >> lowres;
599 
600  s->block_index[0]+=2;
601  s->block_index[1]+=2;
602  s->block_index[2]+=2;
603  s->block_index[3]+=2;
604  s->block_index[4]++;
605  s->block_index[5]++;
606  s->dest[0]+= 2*block_size;
607  s->dest[1] += (2 >> chroma_x_shift) * block_size;
608  s->dest[2] += (2 >> chroma_x_shift) * block_size;
609 }
610 
611 #endif /* AVCODEC_MPEGVIDEO_H */
MpegEncContext::i_count
int i_count
Definition: mpegvideo.h:341
MpegEncContext::h264chroma
H264ChromaContext h264chroma
Definition: mpegvideo.h:215
ratecontrol.h
MpegEncContext::picture
Picture * picture
main picture buffer
Definition: mpegvideo.h:125
MpegEncContext::mb_skipped
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:185
MpegEncContext::mb_type
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:286
MpegEncContext::new_picture
AVFrame * new_picture
Reference to the source picture for encoding.
Definition: mpegvideo.h:163
MpegEncContext::h263_flv
int h263_flv
use flv H.263 header
Definition: mpegvideo.h:100
MpegEncContext::q_intra_matrix16
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:320
MpegEncContext::rtp_payload_size
int rtp_payload_size
Definition: mpegvideo.h:462
MpegEncContext::b_field_select_table
uint8_t *[2][2] b_field_select_table
Only the first element is allocated.
Definition: mpegvideo.h:243
MpegEncContext::progressive_sequence
int progressive_sequence
Definition: mpegvideo.h:432
MpegEncContext::luma_elim_threshold
int luma_elim_threshold
Definition: mpegvideo.h:106
MpegEncContext::data_partitioning
int data_partitioning
data partitioning flag from header
Definition: mpegvideo.h:386
MpegEncContext::stuffing_bits
int stuffing_bits
bits used for stuffing
Definition: mpegvideo.h:332
MpegEncContext::dct_unquantize_mpeg1_intra
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:476
MpegEncContext::lambda
unsigned int lambda
Lagrange multiplier used in rate distortion.
Definition: mpegvideo.h:196
blockdsp.h
MpegEncContext::quantizer_noise_shaping
int quantizer_noise_shaping
Definition: mpegvideo.h:497
MpegEncContext::b_code
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:225
MpegEncContext::rc_initial_cplx
float rc_initial_cplx
Definition: mpegvideo.h:506
MpegEncContext::gb
GetBitContext gb
Definition: mpegvideo.h:425
MpegEncContext::inter_intra_pred
int inter_intra_pred
Definition: mpegvideo.h:421
MpegEncContext::top_field_first
int top_field_first
Definition: mpegvideo.h:440
MpegEncContext::input_picture_number
int input_picture_number
used to set pic->display_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:114
MpegEncContext::dct_unquantize_h263_inter
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:486
MpegEncContext::total_bits
int64_t total_bits
Definition: mpegvideo.h:330
MpegEncContext::pp_time
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:379
MpegEncContext::rc_context
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
Definition: mpegvideo.h:334
MpegEncContext::mb_mean
uint8_t * mb_mean
Table for MB luminance.
Definition: mpegvideo.h:248
MpegEncContext::intra_quant_bias
int intra_quant_bias
bias for the quantizer
Definition: mpegvideo.h:300
MpegEncContext::max_b_frames
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:105
MpegEncContext::block_index
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:288
MpegEncContext::frame_skip_exp
int frame_skip_exp
Definition: mpegvideo.h:533
MotionEstContext
Motion estimation context.
Definition: motion_est.h:47
MpegEncContext::coded_picture_number
int coded_picture_number
used to set pic->coded_picture_number, should not be used for/by anything else
Definition: mpegvideo.h:115
MpegEncContext::slice_height
int slice_height
in macroblocks
Definition: mpegvideo.h:414
MpegEncContext::current_picture
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:169
MpegEncContext::bits_tab
float * bits_tab
Definition: mpegvideo.h:515
MpegEncContext::partitioned_frame
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:387
MpegEncContext::y_dc_scale
int y_dc_scale
Definition: mpegvideo.h:70
MpegEncContext::dct_offset
uint16_t(* dct_offset)[64]
Definition: mpegvideo.h:327
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
MpegEncContext::mb_num
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:122
MpegEncContext::ac_val_base
int16_t(* ac_val_base)[16]
Definition: mpegvideo.h:183
MpegEncContext::dct_unquantize_mpeg2_intra
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:480
MpegEncContext::workaround_bugs
int workaround_bugs
workaround bugs in encoders which cannot be detected automatically
Definition: mpegvideo.h:108
MpegEncContext::reordered_pts
int64_t reordered_pts
reordered pts to be used as dts for the next output frame when there's a delay
Definition: mpegvideo.h:137
MpegEncContext::h263dsp
H263DSPContext h263dsp
Definition: mpegvideo.h:223
MpegEncContext::inter_quant_bias
int inter_quant_bias
bias for the quantizer
Definition: mpegvideo.h:301
MpegEncContext::mb_width
int mb_width
Definition: mpegvideo.h:118
h263dsp.h
MpegEncContext::fcode_tab
const uint8_t * fcode_tab
smallest fcode needed for each MV
Definition: mpegvideo.h:274
MpegEncContext::next_picture
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:157
MpegEncContext::last_dc
int last_dc[3]
last DC values for MPEG-1
Definition: mpegvideo.h:175
MpegEncContext::intra_chroma_ac_vlc_length
uint8_t * intra_chroma_ac_vlc_length
Definition: mpegvideo.h:307
MpegEncContext::chroma_qscale
int chroma_qscale
chroma QP
Definition: mpegvideo.h:195
MpegEncContext::repeat_first_field
int repeat_first_field
Definition: mpegvideo.h:446
MpegEncContext::mv_table_index
int mv_table_index
Definition: mpegvideo.h:409
MpegEncContext::vbv_delay
int vbv_delay
Definition: mpegvideo.h:202
MpegEncContext::input_picture
Picture ** input_picture
next pictures on display order for encoding
Definition: mpegvideo.h:126
MpegEncContext::ac_val
int16_t(*[3] ac_val)[16]
used for MPEG-4 AC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:184
MpegEncContext::gob_index
int gob_index
Definition: mpegvideo.h:353
MpegEncContext::fdsp
FDCTDSPContext fdsp
Definition: mpegvideo.h:214
ERContext
Definition: error_resilience.h:52
MpegEncContext::unrestricted_mv
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:210
MpegEncContext::dest
uint8_t * dest[3]
Definition: mpegvideo.h:290
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:85
MpegEncContext::last_non_b_time
int64_t last_non_b_time
Definition: mpegvideo.h:378
Picture
Picture.
Definition: mpegpicture.h:46
MpegEncContext::next_picture_ptr
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:172
MpegEncContext::pb
PutBitContext pb
bit output
Definition: mpegvideo.h:140
MpegEncContext::mcsel
int mcsel
Definition: mpegvideo.h:383
MpegEncContext::mb_num_left
int mb_num_left
number of MBs left in this video packet (for partitioned Slices only)
Definition: mpegvideo.h:350
BlockDSPContext
Definition: blockdsp.h:32
MpegEncContext::height
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:90
mpegutils.h
MpegEncContext::fast_dct_quantize
int(* fast_dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:493
MpegEncContext::dts_delta
int64_t dts_delta
pts difference between the first and second input frame, used for calculating dts of the first frame ...
Definition: mpegvideo.h:133
MpegEncContext::dct_unquantize_h263_intra
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:484
MpegEncContext::frame_skip_cmp
int frame_skip_cmp
Definition: mpegvideo.h:534
MpegEncContext::last_resync_gb
GetBitContext last_resync_gb
used to search for the next resync marker
Definition: mpegvideo.h:349
MPEGVIDEO_MAX_PLANES
#define MPEGVIDEO_MAX_PLANES
Definition: mpegpicture.h:32
MpegEncContext::mv
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:271
ScratchpadContext
Definition: mpegpicture.h:36
MpegEncContext::use_skip_mb_code
int use_skip_mb_code
Definition: mpegvideo.h:413
MpegEncContext::out_format
enum OutputFormat out_format
output format
Definition: mpegvideo.h:94
MpegEncContext::esc_pos
int esc_pos
Definition: mpegvideo.h:406
MpegEncContext::border_masking
float border_masking
Definition: mpegvideo.h:508
MpegEncContext::time_base
int time_base
time in seconds of last I,P,S Frame
Definition: mpegvideo.h:376
MpegEncContext::mpeg_f_code
int mpeg_f_code[2][2]
Definition: mpegvideo.h:433
MpegEncContext::intra_scantable
ScanTable intra_scantable
Definition: mpegvideo.h:81
FDCTDSPContext
Definition: fdctdsp.h:28
MpegEncContext::mb_height
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:118
MpegEncContext::permutated_intra_v_scantable
uint8_t permutated_intra_v_scantable[64]
Definition: mpegvideo.h:83
MpegEncContext::pict_type
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:201
MpegEncContext::h263_pred
int h263_pred
use MPEG-4/H.263 ac/dc predictions
Definition: mpegvideo.h:95
MpegEncContext::mbintra_table
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:188
MpegEncContext::mpv_flags
int mpv_flags
flags set by private options
Definition: mpegvideo.h:496
MpegEncContext::chroma_y_shift
int chroma_y_shift
Definition: mpegvideo.h:453
MpegEncContext::intra_penalty
int intra_penalty
Definition: mpegvideo.h:539
MpegEncContext::picture_structure
int picture_structure
Definition: mpegvideo.h:436
MpegEncContext::intra_only
int intra_only
if true, only intra pictures are generated
Definition: mpegvideo.h:92
MpegEncContext::vdsp
VideoDSPContext vdsp
Definition: mpegvideo.h:222
MpegEncContext::padding_bug_score
int padding_bug_score
used to detect the VERY common padding bug in MPEG-4
Definition: mpegvideo.h:392
ff_init_scantable
void ff_init_scantable(const uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: mpegvideo.c:321
GetBitContext
Definition: get_bits.h:108
MpegEncContext::linesize
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:123
MpegEncContext::mc_mb_var
uint16_t * mc_mb_var
Table for motion compensated MB variances.
Definition: mpegvideo.h:247
MpegEncContext::bdsp
BlockDSPContext bdsp
Definition: mpegvideo.h:213
MpegEncContext::umvplus
int umvplus
== H.263+ && unrestricted_mv
Definition: mpegvideo.h:362
MpegEncContext::ptr_lastgob
uint8_t * ptr_lastgob
Definition: mpegvideo.h:464
MpegEncContext::width
int width
Definition: mpegvideo.h:90
ff_mpv_common_init_x86
void ff_mpv_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:454
motion_est.h
MpegEncContext::b_bidir_forw_mv_table_base
int16_t(* b_bidir_forw_mv_table_base)[2]
Definition: mpegvideo.h:229
ff_mpv_idct_init
void ff_mpv_idct_init(MpegEncContext *s)
Definition: mpegvideo.c:342
MpegEncContext::gop_size
int gop_size
Definition: mpegvideo.h:91
MpegEncContext::frame_pred_frame_dct
int frame_pred_frame_dct
Definition: mpegvideo.h:439
MpegEncContext::mb_var_sum
int64_t mb_var_sum
sum of MB variance for current frame
Definition: mpegvideo.h:249
MpegEncContext::q_intra_matrix
int(* q_intra_matrix)[64]
precomputed matrix (combine qscale and DCT renorm)
Definition: mpegvideo.h:316
MpegEncContext::i_tex_bits
int i_tex_bits
Definition: mpegvideo.h:339
MpegEncContext::pblocks
int16_t(*[12] pblocks)[64]
Definition: mpegvideo.h:465
RateControlContext
rate control context.
Definition: ratecontrol.h:63
H263DSPContext
Definition: h263dsp.h:26
MpegEncContext::pb_frame
int pb_frame
PB-frame mode (0 = none, 1 = base, 2 = improved)
Definition: mpegvideo.h:96
ff_set_qscale
void ff_set_qscale(MpegEncContext *s, int qscale)
set qscale and update qscale dependent variables.
Definition: mpegvideo.c:878
MpegEncContext::coded_block
uint8_t * coded_block
used for coded block pattern prediction (msmpeg4v3, wmv1)
Definition: mpegvideo.h:182
MpegEncContext::pp_field_time
uint16_t pp_field_time
Definition: mpegvideo.h:381
s
#define s(width, name)
Definition: cbs_vp9.c:198
MpegEncContext::mpvencdsp
MpegvideoEncDSPContext mpvencdsp
Definition: mpegvideo.h:219
MpegEncContext::last_time_base
int last_time_base
Definition: mpegvideo.h:375
MpegEncContext::me_penalty_compensation
int me_penalty_compensation
Definition: mpegvideo.h:254
MpegEncContext::mv_dir
int mv_dir
Definition: mpegvideo.h:256
MpegEncContext::h_edge_pos
int h_edge_pos
Definition: mpegvideo.h:121
MpegEncContext::b_back_mv_table
int16_t(* b_back_mv_table)[2]
MV table (1MV per MB) backward mode B-frame encoding.
Definition: mpegvideo.h:236
MpegEncContext::mb_skip_run
int mb_skip_run
Definition: mpegvideo.h:284
ff_mpv_common_defaults
void ff_mpv_common_defaults(MpegEncContext *s)
Set the given MpegEncContext to common defaults (same for encoding and decoding).
Definition: mpegvideo.c:521
MpegEncContext::skipped_last_frame
int skipped_last_frame
Definition: mpegvideo.h:174
MpegEncContext::b_sensitivity
int b_sensitivity
Definition: mpegvideo.h:528
MpegEncContext::bit_rate
int64_t bit_rate
wanted bit rate
Definition: mpegvideo.h:93
OutputFormat
OutputFormat
Definition: mpegutils.h:116
MpegEncContext::p_field_mv_table_base
int16_t(* p_field_mv_table_base)[2]
Definition: mpegvideo.h:232
MpegEncContext::max_qcoeff
int max_qcoeff
maximum encodable coefficient
Definition: mpegvideo.h:303
MpegEncContext::loop_filter
int loop_filter
Definition: mpegvideo.h:367
ScanTable::scantable
const uint8_t * scantable
Definition: mpegvideo.h:59
MpegEncContext::user_specified_pts
int64_t user_specified_pts
last non-zero pts from AVFrame which was passed into avcodec_send_frame()
Definition: mpegvideo.h:129
get_bits.h
MpegEncContext::frame_bits
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:331
MpegEncContext::denoise_dct
void(* denoise_dct)(struct MpegEncContext *s, int16_t *block)
Definition: mpegvideo.h:494
MpegEncContext::inter_ac_vlc_length
uint8_t * inter_ac_vlc_length
Definition: mpegvideo.h:309
MpegEncContext::divx_packed
int divx_packed
Definition: mpegvideo.h:395
MpegEncContext::brd_scale
int brd_scale
Definition: mpegvideo.h:443
MpegEncContext::dct_quantize
int(* dct_quantize)(struct MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
Definition: mpegvideo.h:492
PutBitContext
Definition: put_bits.h:50
MpegEncContext::mb_stride
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
Definition: mpegvideo.h:119
MpegEncContext::bitstream_buffer_size
int bitstream_buffer_size
Definition: mpegvideo.h:397
MpegEncContext::low_delay
int low_delay
no reordering needed / has no B-frames
Definition: mpegvideo.h:388
MpegEncContext::b_direct_mv_table
int16_t(* b_direct_mv_table)[2]
MV table (1MV per MB) direct mode B-frame encoding.
Definition: mpegvideo.h:239
PixblockDSPContext
Definition: pixblockdsp.h:28
MpegEncContext::mc_mb_var_sum
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegvideo.h:250
MpegEncContext::inter_ac_vlc_last_length
uint8_t * inter_ac_vlc_last_length
Definition: mpegvideo.h:310
MECmpContext
Definition: me_cmp.h:55
MpegEncContext::prev_mb_info
int prev_mb_info
Definition: mpegvideo.h:356
MpegEncContext::pb2
PutBitContext pb2
used for data partitioned VOPs
Definition: mpegvideo.h:390
MpegEncContext::field_select
int field_select[2][2]
Definition: mpegvideo.h:272
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
MpegEncContext::chroma_420_type
int chroma_420_type
Definition: mpegvideo.h:447
ff_mpv_common_end
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:782
MpegEncContext::mb_y
int mb_y
Definition: mpegvideo.h:283
MpegEncContext::h263_long_vectors
int h263_long_vectors
use horrible H.263v1 long vector mode
Definition: mpegvideo.h:211
MpegEncContext::dct_error_sum
int(* dct_error_sum)[64]
Definition: mpegvideo.h:325
MpegEncContext::f_code
int f_code
forward MV resolution
Definition: mpegvideo.h:224
MpegEncContext::header_bits
int header_bits
Definition: mpegvideo.h:338
MpegEncContext::h263_aic
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:73
MpegEncContext::esc3_run_length
int esc3_run_length
Definition: mpegvideo.h:420
MpegEncContext::intra_chroma_ac_vlc_last_length
uint8_t * intra_chroma_ac_vlc_last_length
Definition: mpegvideo.h:308
MpegEncContext::p_mv_table
int16_t(* p_mv_table)[2]
MV table (1MV per MB) P-frame encoding.
Definition: mpegvideo.h:234
MpegEncContext::y_dc_scale_table
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:178
MpegEncContext::inter_matrix
uint16_t inter_matrix[64]
Definition: mpegvideo.h:297
MpegEncContext::mecc
MECmpContext mecc
Definition: mpegvideo.h:218
MpegEncContext::hdsp
HpelDSPContext hdsp
Definition: mpegvideo.h:216
MpegEncContext::decode_mb
int(* decode_mb)(struct MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.h:469
MpegEncContext::concealment_motion_vectors
int concealment_motion_vectors
Definition: mpegvideo.h:441
MpegEncContext::mb_info_ptr
uint8_t * mb_info_ptr
Definition: mpegvideo.h:357
MpegEncContext::mv_bits
int mv_bits
Definition: mpegvideo.h:337
MpegEncContext::rc_buffer_aggressivity
float rc_buffer_aggressivity
Definition: mpegvideo.h:507
MpegEncContext::b8_stride
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:120
lowres
static int lowres
Definition: ffplay.c:333
qpeldsp.h
MpegEncContext::dct_unquantize_mpeg1_inter
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:478
MpegEncContext::last_picture_ptr
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:171
MpegEncContext::pdsp
PixblockDSPContext pdsp
Definition: mpegvideo.h:220
MpegEncContext::me
MotionEstContext me
Definition: mpegvideo.h:277
MpegEncContext::slice_context_count
int slice_context_count
number of used thread_contexts
Definition: mpegvideo.h:145
MpegEncContext::scenechange_threshold
int scenechange_threshold
Definition: mpegvideo.h:536
op_pixels_func
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
MpegEncContext::b_field_mv_table_base
int16_t(* b_field_mv_table_base)[2]
Definition: mpegvideo.h:233
MpegEncContext::pb_time
uint16_t pb_time
time distance between the last b and p,s,i frame
Definition: mpegvideo.h:380
MpegEncContext::q_inter_matrix16
uint16_t(* q_inter_matrix16)[2][64]
Definition: mpegvideo.h:322
MpegEncContext::quant_precision
int quant_precision
Definition: mpegvideo.h:384
qpel_mc_func
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
MpegEncContext::private_ctx
void * private_ctx
Definition: mpegvideo.h:88
MpegEncContext::blocks
int16_t(* blocks)[12][64]
Definition: mpegvideo.h:468
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:49
MpegEncContext::idsp
IDCTDSPContext idsp
Definition: mpegvideo.h:217
MpegEncContext::c_dc_scale
int c_dc_scale
Definition: mpegvideo.h:70
MpegEncContext::b_bidir_forw_mv_table
int16_t(* b_bidir_forw_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:237
HpelDSPContext
Half-pel DSP context.
Definition: hpeldsp.h:45
MpegEncContext::pb_field_time
uint16_t pb_field_time
like above, just for interlaced
Definition: mpegvideo.h:382
MpegEncContext::coded_block_base
uint8_t * coded_block_base
Definition: mpegvideo.h:181
ff_mpv_init_duplicate_contexts
int ff_mpv_init_duplicate_contexts(MpegEncContext *s)
Initialize an MpegEncContext's thread contexts.
Definition: mpegvideo.c:410
MpegEncContext::me_pre
int me_pre
prepass for motion estimation
Definition: mpegvideo.h:255
MpegEncContext::q_chroma_intra_matrix16
uint16_t(* q_chroma_intra_matrix16)[2][64]
Definition: mpegvideo.h:321
MpegEncContext::mb_intra
int mb_intra
Definition: mpegvideo.h:285
MpegEncContext::min_qcoeff
int min_qcoeff
minimum encodable coefficient
Definition: mpegvideo.h:302
MpegEncContext::chroma_qscale_table
const uint8_t * chroma_qscale_table
qscale -> chroma_qscale (H.263)
Definition: mpegvideo.h:180
MpegEncContext::last_mb_info
int last_mb_info
Definition: mpegvideo.h:356
ff_mpv_common_init_axp
void ff_mpv_common_init_axp(MpegEncContext *s)
Definition: mpegvideo_alpha.c:106
MpegEncContext::qscale
int qscale
QP.
Definition: mpegvideo.h:194
MpegEncContext::first_slice_line
int first_slice_line
used in MPEG-4 too to handle resync markers
Definition: mpegvideo.h:415
MpegEncContext::frame_skip_factor
int frame_skip_factor
Definition: mpegvideo.h:532
MpegEncContext::intra_matrix
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:295
ff_update_block_index
static void ff_update_block_index(MpegEncContext *s, int bits_per_raw_sample, int lowres, int chroma_x_shift)
Definition: mpegvideo.h:594
MpegEncContext::lambda2
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:197
MpegEncContext::adaptive_quant
int adaptive_quant
use adaptive quantization
Definition: mpegvideo.h:199
MpegEncContext::v_edge_pos
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:121
MpegEncContext::dct_count
int dct_count[2]
Definition: mpegvideo.h:326
MpegEncContext::tmp_frames
AVFrame * tmp_frames[MAX_B_FRAMES+2]
Definition: mpegvideo.h:526
MpegEncContext::b_frame_strategy
int b_frame_strategy
Definition: mpegvideo.h:527
MpegEncContext::qdsp
QpelDSPContext qdsp
Definition: mpegvideo.h:221
MpegEncContext::b_forw_mv_table
int16_t(* b_forw_mv_table)[2]
MV table (1MV per MB) forward mode B-frame encoding.
Definition: mpegvideo.h:235
h264chroma.h
MpegEncContext::interlaced_dct
int interlaced_dct
Definition: mpegvideo.h:457
MpegEncContext::error_rate
int error_rate
Definition: mpegvideo.h:523
MpegEncContext::encoding
int encoding
true if we are encoding (vs decoding)
Definition: mpegvideo.h:104
MpegEncContext::mbskip_table
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:186
MAX_THREADS
#define MAX_THREADS
Definition: mpegvideo.h:51
MpegEncContext::dc_val
int16_t * dc_val[3]
used for MPEG-4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:177
MpegEncContext::quarter_sample
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:385
MpegEncContext::context_initialized
int context_initialized
Definition: mpegvideo.h:113
MpegEncContext::p_mv_table_base
int16_t(* p_mv_table_base)[2]
Definition: mpegvideo.h:226
MpegEncContext::dct_precision
int dct_precision
number of bits to represent the fractional part of time (encoder only)
Definition: mpegvideo.h:372
MpegEncContext::q_chroma_intra_matrix
int(* q_chroma_intra_matrix)[64]
Definition: mpegvideo.h:317
MpegEncContext::b_direct_mv_table_base
int16_t(* b_direct_mv_table_base)[2]
Definition: mpegvideo.h:231
mpegpicture.h
MpegEncContext::rl_chroma_table_index
int rl_chroma_table_index
Definition: mpegvideo.h:411
MpegEncContext::picture_in_gop_number
int picture_in_gop_number
0-> first pic in gop, ...
Definition: mpegvideo.h:117
ff_mpv_motion
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t *const *ref_picture, op_pixels_func(*pix_op)[4], qpel_mc_func(*qpix_op)[16])
Definition: mpegvideo_motion.c:815
ff_mpv_init_context_frame
int ff_mpv_init_context_frame(MpegEncContext *s)
Initialize and allocates MpegEncContext fields dependent on the resolution.
Definition: mpegvideo.c:539
MpegEncContext::context_reinit
int context_reinit
Definition: mpegvideo.h:519
MpegEncContext::p_field_select_table
uint8_t *[2] p_field_select_table
Only the first element is allocated.
Definition: mpegvideo.h:242
MpegEncContext::intra_ac_vlc_last_length
uint8_t * intra_ac_vlc_last_length
Definition: mpegvideo.h:306
ff_mpv_common_init
int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:681
ff_init_block_index
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:845
MpegEncContext::mb_var
uint16_t * mb_var
Table for MB variances.
Definition: mpegvideo.h:246
MpegEncContext::full_pel
int full_pel[2]
Definition: mpegvideo.h:456
MpegEncContext::block_last_index
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:72
MpegEncContext::chroma_elim_threshold
int chroma_elim_threshold
Definition: mpegvideo.h:107
MpegEncContext::dc_val_base
int16_t * dc_val_base
Definition: mpegvideo.h:176
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:173
MpegvideoEncDSPContext
Definition: mpegvideoencdsp.h:32
MpegEncContext::last_mv
int last_mv[2][2][2]
last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
Definition: mpegvideo.h:273
MpegEncContext::uvlinesize
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:124
MpegEncContext::progressive_frame
int progressive_frame
Definition: mpegvideo.h:455
MpegEncContext::allocated_bitstream_buffer_size
unsigned int allocated_bitstream_buffer_size
Definition: mpegvideo.h:398
MpegEncContext::chroma_inter_matrix
uint16_t chroma_inter_matrix[64]
Definition: mpegvideo.h:298
MpegEncContext::encoding_error
uint64_t encoding_error[MPEGVIDEO_MAX_PLANES]
Definition: mpegvideo.h:251
MpegEncContext::mjpeg_ctx
struct MJpegContext * mjpeg_ctx
Definition: mpegvideo.h:405
ff_update_duplicate_context
int ff_update_duplicate_context(MpegEncContext *dst, const MpegEncContext *src)
Definition: mpegvideo.c:490
MpegEncContext::esc3_level_length
int esc3_level_length
Definition: mpegvideo.h:419
MpegEncContext::obmc
int obmc
overlapped block motion compensation
Definition: mpegvideo.h:354
ff_mpv_common_init_neon
void ff_mpv_common_init_neon(MpegEncContext *s)
Definition: mpegvideo.c:127
MpegEncContext::tex_pb
PutBitContext tex_pb
used for data partitioned VOPs
Definition: mpegvideo.h:389
MpegEncContext::mb_x
int mb_x
Definition: mpegvideo.h:283
ff_mpv_common_init_ppc
void ff_mpv_common_init_ppc(MpegEncContext *s)
Definition: mpegvideo_altivec.c:119
MpegEncContext::thread_context
struct MpegEncContext * thread_context[MAX_THREADS]
Definition: mpegvideo.h:144
MpegEncContext::b_bidir_back_mv_table
int16_t(* b_bidir_back_mv_table)[2]
MV table (1MV per MB) bidir mode B-frame encoding.
Definition: mpegvideo.h:238
MpegEncContext::sc
ScratchpadContext sc
Definition: mpegvideo.h:192
fdctdsp.h
MpegEncContext::dc_table_index
int dc_table_index
Definition: mpegvideo.h:412
MpegEncContext::rc_qmod_amp
float rc_qmod_amp
Definition: mpegvideo.h:504
MpegEncContext::intra_vlc_format
int intra_vlc_format
Definition: mpegvideo.h:444
MpegEncContext::skipdct
int skipdct
skip dct and code zero residual
Definition: mpegvideo.h:207
MpegEncContext::permutated_intra_h_scantable
uint8_t permutated_intra_h_scantable[64]
Definition: mpegvideo.h:82
MpegEncContext::er
ERContext er
Definition: mpegvideo.h:521
MpegEncContext::last_lambda_for
int last_lambda_for[5]
last lambda for a specific pict type
Definition: mpegvideo.h:206
MpegEncContext::b_forw_mv_table_base
int16_t(* b_forw_mv_table_base)[2]
Definition: mpegvideo.h:227
MpegEncContext::picture_number
int picture_number
Definition: mpegvideo.h:116
MpegEncContext::dct_unquantize_inter
void(* dct_unquantize_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:490
idctdsp.h
MpegEncContext::motion_est
int motion_est
ME algorithm.
Definition: mpegvideo.h:253
MpegEncContext::h263_slice_structured
int h263_slice_structured
Definition: mpegvideo.h:364
avcodec.h
ff_clean_intra_table_entries
void ff_clean_intra_table_entries(MpegEncContext *s)
Clean dc, ac, coded_block for the current non-intra MB.
Definition: mpegvideo.c:815
MpegEncContext::fixed_qscale
int fixed_qscale
fixed qscale if non zero
Definition: mpegvideo.h:103
MpegEncContext::last_non_b_pict_type
int last_non_b_pict_type
used for MPEG-4 gmc B-frames & ratecontrol
Definition: mpegvideo.h:204
MpegEncContext::mspel
int mspel
Definition: mpegvideo.h:422
IDCTDSPContext
Definition: idctdsp.h:45
MpegEncContext::rv10_version
int rv10_version
RV10 version: 0 or 3.
Definition: mpegvideo.h:401
me_cmp.h
ff_mpv_common_init_mips
void ff_mpv_common_init_mips(MpegEncContext *s)
Definition: mpegvideo_init_mips.c:26
MpegEncContext::p_field_mv_table
int16_t(*[2][2] p_field_mv_table)[2]
MV table (2MV per MB) interlaced P-frame encoding.
Definition: mpegvideo.h:240
MpegEncContext::block
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:467
MpegEncContext::dquant
int dquant
qscale difference to prev qscale
Definition: mpegvideo.h:200
MpegEncContext::chroma_x_shift
int chroma_x_shift
Definition: mpegvideo.h:452
QpelDSPContext
quarterpel DSP context
Definition: qpeldsp.h:72
AVCodecContext
main external API structure.
Definition: avcodec.h:445
MpegEncContext::intra_dc_precision
int intra_dc_precision
Definition: mpegvideo.h:438
MpegEncContext::per_mb_rl_table
int per_mb_rl_table
Definition: mpegvideo.h:418
MpegEncContext::skip_count
int skip_count
Definition: mpegvideo.h:342
MpegEncContext::flipflop_rounding
int flipflop_rounding
Definition: mpegvideo.h:416
MpegEncContext::ac_esc_length
int ac_esc_length
num of bits needed to encode the longest esc
Definition: mpegvideo.h:304
MpegEncContext::ehc_mode
int ehc_mode
Definition: mpegvideo.h:359
MpegEncContext::last_bits
int last_bits
temp var used for calculating the above vars
Definition: mpegvideo.h:344
MpegEncContext::modified_quant
int modified_quant
Definition: mpegvideo.h:366
MpegEncContext::lmin
int lmin
Definition: mpegvideo.h:509
error_resilience.h
MpegEncContext::rv10_first_dc_coded
int rv10_first_dc_coded[3]
Definition: mpegvideo.h:402
MpegEncContext::rc_eq
char * rc_eq
Definition: mpegvideo.h:512
mpegvideoencdsp.h
MpegEncContext::vbv_ignore_qmax
int vbv_ignore_qmax
Definition: mpegvideo.h:510
MpegEncContext::lmax
int lmax
Definition: mpegvideo.h:509
MpegEncContext::time
int64_t time
time of current frame
Definition: mpegvideo.h:377
MJpegContext
Holds JPEG frame data and Huffman table data.
Definition: mjpegenc.h:59
MpegEncContext::last_picture
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:151
MpegEncContext::pred_dir_table
uint8_t * pred_dir_table
used to store pred_dir for partitioned decoding
Definition: mpegvideo.h:190
MpegEncContext::dct_unquantize_intra
void(* dct_unquantize_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:488
MpegEncContext::resync_mb_x
int resync_mb_x
x position of last resync marker
Definition: mpegvideo.h:347
VideoDSPContext
Definition: videodsp.h:40
MpegEncContext::no_rounding
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:279
MpegEncContext::h263_aic_dir
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
Definition: mpegvideo.h:363
MpegEncContext::dct_unquantize_mpeg2_inter
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:482
MpegEncContext::mpeg_quant
int mpeg_quant
Definition: mpegvideo.h:391
MpegEncContext::mb_info_size
int mb_info_size
Definition: mpegvideo.h:358
MpegEncContext::noise_reduction
int noise_reduction
Definition: mpegvideo.h:537
overflow
Undefined Behavior In the C some operations are like signed integer overflow
Definition: undefined.txt:3
MpegEncContext::inter_scantable
ScanTable inter_scantable
if inter == intra then intra should be used to reduce the cache usage
Definition: mpegvideo.h:76
MpegEncContext::luma_dc_vlc_length
uint8_t * luma_dc_vlc_length
Definition: mpegvideo.h:311
MpegEncContext::droppable
int droppable
Definition: mpegvideo.h:205
MpegEncContext::frame_skip_threshold
int frame_skip_threshold
Definition: mpegvideo.h:531
ScanTable
Scantable.
Definition: mpegvideo.h:58
MpegEncContext::cbp_table
uint8_t * cbp_table
used to store cbp, ac_pred for partitioned decoding
Definition: mpegvideo.h:189
ff_mpv_common_init_arm
void ff_mpv_common_init_arm(MpegEncContext *s)
Definition: mpegvideo_arm.c:44
MpegEncContext::vbv_delay_pos
int vbv_delay_pos
offset of vbv_delay in the bitstream
Definition: mpegvideo.h:429
MpegEncContext::first_field
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:458
MpegEncContext::q_scale_type
int q_scale_type
Definition: mpegvideo.h:442
H264ChromaContext
Definition: h264chroma.h:27
ScanTable::permutated
uint8_t permutated[64]
Definition: mpegvideo.h:60
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
MpegEncContext::last_mv_dir
int last_mv_dir
last mv_dir, used for B-frame encoding
Definition: mpegvideo.h:428
MpegEncContext::q_inter_matrix
int(* q_inter_matrix)[64]
Definition: mpegvideo.h:318
MAX_B_FRAMES
#define MAX_B_FRAMES
Definition: mpegvideo.h:53
videodsp.h
MpegEncContext::mb_info
int mb_info
interval for outputting info about mb offsets as side data
Definition: mpegvideo.h:355
MpegEncContext::next_lambda
int next_lambda
next lambda used for retrying to encode a frame
Definition: mpegvideo.h:333
MpegEncContext::reordered_input_picture
Picture ** reordered_input_picture
pointer to the next pictures in coded order for encoding
Definition: mpegvideo.h:127
MpegEncContext::coded_score
int coded_score[12]
Definition: mpegvideo.h:313
MpegEncContext::last_pict_type
int last_pict_type
Definition: mpegvideo.h:203
hpeldsp.h
MpegEncContext::msmpeg4_version
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:417
ff_mpv_free_context_frame
void ff_mpv_free_context_frame(MpegEncContext *s)
Frees and resets MpegEncContext fields depending on the resolution as well as the slice thread contex...
Definition: mpegvideo.c:758
MpegEncContext::misc_bits
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:343
MpegEncContext::resync_mb_y
int resync_mb_y
y position of last resync marker
Definition: mpegvideo.h:348
MpegEncContext::end_mb_y
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:143
MpegEncContext::mb_index2xy
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:292
MpegEncContext::rc_qsquish
float rc_qsquish
ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continuous function to limit qscal...
Definition: mpegvideo.h:503
MpegEncContext::h263_plus
int h263_plus
H.263+ headers.
Definition: mpegvideo.h:99
MpegEncContext::start_mb_y
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:142
MpegEncContext::block_wrap
int block_wrap[6]
Definition: mpegvideo.h:289
MpegEncContext::b_back_mv_table_base
int16_t(* b_back_mv_table_base)[2]
Definition: mpegvideo.h:228
MpegEncContext::alternate_scan
int alternate_scan
Definition: mpegvideo.h:445
MpegEncContext::cplx_tab
float * cplx_tab
Definition: mpegvideo.h:515
int
int
Definition: ffmpeg_filter.c:424
put_bits.h
MpegEncContext::custom_pcf
int custom_pcf
Definition: mpegvideo.h:368
MpegEncContext::direct_scale_mv
int16_t direct_scale_mv[2][64]
precomputed to avoid divisions in ff_mpeg4_set_direct_mv
Definition: mpegvideo.h:275
MpegEncContext::c_dc_scale_table
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:179
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:67
MpegEncContext::bitstream_buffer
uint8_t * bitstream_buffer
Definition: mpegvideo.h:396
MpegEncContext::codec_id
enum AVCodecID codec_id
Definition: mpegvideo.h:102
MpegEncContext::b_bidir_back_mv_table_base
int16_t(* b_bidir_back_mv_table_base)[2]
Definition: mpegvideo.h:230
MpegEncContext::alt_inter_vlc
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:365
MpegEncContext::intra_ac_vlc_length
uint8_t * intra_ac_vlc_length
Definition: mpegvideo.h:305
MpegEncContext::p_tex_bits
int p_tex_bits
Definition: mpegvideo.h:340
MpegEncContext::b_field_mv_table
int16_t(*[2][2][2] b_field_mv_table)[2]
MV table (4MV per MB) interlaced B-frame encoding.
Definition: mpegvideo.h:241
pixblockdsp.h
MpegEncContext::chroma_intra_matrix
uint16_t chroma_intra_matrix[64]
Definition: mpegvideo.h:296
MpegEncContext::lambda_table
int * lambda_table
Definition: mpegvideo.h:198
MpegEncContext::rtp_mode
int rtp_mode
Definition: mpegvideo.h:461
ScanTable::raster_end
uint8_t raster_end[64]
Definition: mpegvideo.h:61
MpegEncContext::rl_table_index
int rl_table_index
Definition: mpegvideo.h:410
MpegEncContext::chroma_format
int chroma_format
Definition: mpegvideo.h:448
MpegEncContext::time_increment_bits
int time_increment_bits
Definition: mpegvideo.h:374
MpegEncContext::studio_profile
int studio_profile
Definition: mpegvideo.h:371
MpegEncContext::rc_qmod_freq
int rc_qmod_freq
Definition: mpegvideo.h:505
MpegEncContext::ac_pred
int ac_pred
Definition: mpegvideo.h:71
MpegEncContext::codec_tag
int codec_tag
internal codec_tag upper case converted from avctx codec_tag
Definition: mpegvideo.h:109