mpegvideo: move ff_draw_horiz_band() to mpegutils.c
[libav.git] / libavcodec / mpegvideo.h
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 Libav.
7 *
8 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * mpegvideo header.
26 */
27
28 #ifndef AVCODEC_MPEGVIDEO_H
29 #define AVCODEC_MPEGVIDEO_H
30
31 #include "avcodec.h"
32 #include "dsputil.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "h263dsp.h"
36 #include "hpeldsp.h"
37 #include "put_bits.h"
38 #include "ratecontrol.h"
39 #include "parser.h"
40 #include "mpeg12data.h"
41 #include "rl.h"
42 #include "thread.h"
43 #include "videodsp.h"
44
45 #include "libavutil/opt.h"
46
47 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
48
49 enum OutputFormat {
50 FMT_MPEG1,
51 FMT_H261,
52 FMT_H263,
53 FMT_MJPEG,
54 };
55
56 #define MPEG_BUF_SIZE (16 * 1024)
57
58 #define QMAT_SHIFT_MMX 16
59 #define QMAT_SHIFT 22
60
61 #define MAX_FCODE 7
62 #define MAX_MV 2048
63
64 #define MAX_THREADS 16
65
66 #define MAX_PICTURE_COUNT 32
67
68 #define MAX_B_FRAMES 16
69
70 #define ME_MAP_SIZE 64
71 #define ME_MAP_SHIFT 3
72 #define ME_MAP_MV_BITS 11
73
74 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
75
76 #define INPLACE_OFFSET 16
77
78 /* Start codes. */
79 #define SEQ_END_CODE 0x000001b7
80 #define SEQ_START_CODE 0x000001b3
81 #define GOP_START_CODE 0x000001b8
82 #define PICTURE_START_CODE 0x00000100
83 #define SLICE_MIN_START_CODE 0x00000101
84 #define SLICE_MAX_START_CODE 0x000001af
85 #define EXT_START_CODE 0x000001b5
86 #define USER_START_CODE 0x000001b2
87
88 struct MpegEncContext;
89
90 /**
91 * Picture.
92 */
93 typedef struct Picture{
94 struct AVFrame f;
95 ThreadFrame tf;
96
97 AVBufferRef *qscale_table_buf;
98 int8_t *qscale_table;
99
100 AVBufferRef *motion_val_buf[2];
101 int16_t (*motion_val[2])[2];
102
103 AVBufferRef *mb_type_buf;
104 uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
105
106 AVBufferRef *mbskip_table_buf;
107 uint8_t *mbskip_table;
108
109 AVBufferRef *ref_index_buf[2];
110 int8_t *ref_index[2];
111
112 AVBufferRef *mb_var_buf;
113 uint16_t *mb_var; ///< Table for MB variances
114
115 AVBufferRef *mc_mb_var_buf;
116 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
117
118 AVBufferRef *mb_mean_buf;
119 uint8_t *mb_mean; ///< Table for MB luminance
120
121 AVBufferRef *hwaccel_priv_buf;
122 /**
123 * hardware accelerator private data
124 */
125 void *hwaccel_picture_private;
126
127 int field_poc[2]; ///< h264 top/bottom POC
128 int poc; ///< h264 frame POC
129 int frame_num; ///< h264 frame_num (raw frame_num from slice header)
130 int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
131 int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
132 pic_num & max_pic_num; long -> long_pic_num) */
133 int long_ref; ///< 1->long term reference 0->short term reference
134 int ref_poc[2][2][32]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
135 int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
136 int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
137 int field_picture; ///< whether or not the picture was encoded in separate fields
138
139 int mb_var_sum; ///< sum of MB variance for current frame
140 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
141
142 int b_frame_score; /* */
143 int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
144
145 int reference;
146 int shared;
147 int recovered; ///< Picture at IDR or recovery point + recovery count
148 } Picture;
149
150 /**
151 * Motion estimation context.
152 */
153 typedef struct MotionEstContext{
154 AVCodecContext *avctx;
155 int skip; ///< set if ME is skipped for the current MB
156 int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
157 int direct_basis_mv[4][2];
158 uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
159 uint8_t *best_mb;
160 uint8_t *temp_mb[2];
161 uint8_t *temp;
162 int best_bits;
163 uint32_t *map; ///< map to avoid duplicate evaluations
164 uint32_t *score_map; ///< map to store the scores
165 unsigned map_generation;
166 int pre_penalty_factor;
167 int penalty_factor; /**< an estimate of the bits required to
168 code a given mv value, e.g. (1,0) takes
169 more bits than (0,0). We have to
170 estimate whether any reduction in
171 residual is worth the extra bits. */
172 int sub_penalty_factor;
173 int mb_penalty_factor;
174 int flags;
175 int sub_flags;
176 int mb_flags;
177 int pre_pass; ///< = 1 for the pre pass
178 int dia_size;
179 int xmin;
180 int xmax;
181 int ymin;
182 int ymax;
183 int pred_x;
184 int pred_y;
185 uint8_t *src[4][4];
186 uint8_t *ref[4][4];
187 int stride;
188 int uvstride;
189 /* temp variables for picture complexity calculation */
190 int mc_mb_var_sum_temp;
191 int mb_var_sum_temp;
192 int scene_change_score;
193 /* cmp, chroma_cmp;*/
194 op_pixels_func (*hpel_put)[4];
195 op_pixels_func (*hpel_avg)[4];
196 qpel_mc_func (*qpel_put)[16];
197 qpel_mc_func (*qpel_avg)[16];
198 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
199 uint8_t *current_mv_penalty;
200 int (*sub_motion_search)(struct MpegEncContext * s,
201 int *mx_ptr, int *my_ptr, int dmin,
202 int src_index, int ref_index,
203 int size, int h);
204 }MotionEstContext;
205
206 /**
207 * MpegEncContext.
208 */
209 typedef struct MpegEncContext {
210 AVClass *class;
211 struct AVCodecContext *avctx;
212 /* the following parameters must be initialized before encoding */
213 int width, height;///< picture size. must be a multiple of 16
214 int gop_size;
215 int intra_only; ///< if true, only intra pictures are generated
216 int bit_rate; ///< wanted bit rate
217 enum OutputFormat out_format; ///< output format
218 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
219 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
220
221 /* the following codec id fields are deprecated in favor of codec_id */
222 int h263_plus; ///< h263 plus headers
223 int h263_flv; ///< use flv h263 header
224
225 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
226 int fixed_qscale; ///< fixed qscale if non zero
227 int encoding; ///< true if we are encoding (vs decoding)
228 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
229 int flags2; ///< AVCodecContext.flags2
230 int max_b_frames; ///< max number of b-frames for encoding
231 int luma_elim_threshold;
232 int chroma_elim_threshold;
233 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
234 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
235 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
236 int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
237 /* the following fields are managed internally by the encoder */
238
239 /* sequence parameters */
240 int context_initialized;
241 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
242 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
243 int picture_number; //FIXME remove, unclear definition
244 int picture_in_gop_number; ///< 0-> first pic in gop, ...
245 int mb_width, mb_height; ///< number of MBs horizontally & vertically
246 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
247 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
248 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
249 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
250 int mb_num; ///< number of MBs of a picture
251 ptrdiff_t linesize; ///< line size, in bytes, may be different from width
252 ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
253 Picture *picture; ///< main picture buffer
254 Picture **input_picture; ///< next pictures on display order for encoding
255 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
256
257 int y_dc_scale, c_dc_scale;
258 int ac_pred;
259 int block_last_index[12]; ///< last non zero coefficient in block
260 int h263_aic; ///< Advanded INTRA Coding (AIC)
261
262 /* scantables */
263 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
264 ScanTable intra_scantable;
265 ScanTable intra_h_scantable;
266 ScanTable intra_v_scantable;
267
268 /* WARNING: changes above this line require updates to hardcoded
269 * offsets used in asm. */
270
271 int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
272 /**
273 * pts difference between the first and second input frame, used for
274 * calculating dts of the first frame when there's a delay */
275 int64_t dts_delta;
276 /**
277 * reordered pts to be used as dts for the next output frame when there's
278 * a delay */
279 int64_t reordered_pts;
280
281 /** bit output */
282 PutBitContext pb;
283
284 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
285 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
286 struct MpegEncContext *thread_context[MAX_THREADS];
287 int slice_context_count; ///< number of used thread_contexts
288
289 /**
290 * copy of the previous picture structure.
291 * note, linesize & data, might not match the previous picture (for field pictures)
292 */
293 Picture last_picture;
294
295 /**
296 * copy of the next picture structure.
297 * note, linesize & data, might not match the next picture (for field pictures)
298 */
299 Picture next_picture;
300
301 /**
302 * copy of the source picture structure for encoding.
303 * note, linesize & data, might not match the source picture (for field pictures)
304 */
305 Picture new_picture;
306
307 /**
308 * copy of the current picture structure.
309 * note, linesize & data, might not match the current picture (for field pictures)
310 */
311 Picture current_picture; ///< buffer to store the decompressed current picture
312
313 Picture *last_picture_ptr; ///< pointer to the previous picture.
314 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
315 Picture *current_picture_ptr; ///< pointer to the current picture
316 int last_dc[3]; ///< last DC values for MPEG1
317 int16_t *dc_val_base;
318 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
319 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
320 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
321 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
322 uint8_t *coded_block_base;
323 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
324 int16_t (*ac_val_base)[16];
325 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
326 int mb_skipped; ///< MUST BE SET only during DECODING
327 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
328 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
329 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
330 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
331 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
332 uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
333 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
334 uint8_t *obmc_scratchpad;
335 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
336
337 int qscale; ///< QP
338 int chroma_qscale; ///< chroma QP
339 unsigned int lambda; ///< lagrange multipler used in rate distortion
340 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
341 int *lambda_table;
342 int adaptive_quant; ///< use adaptive quantization
343 int dquant; ///< qscale difference to prev qscale
344 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
345 int last_pict_type; //FIXME removes
346 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
347 int droppable;
348 int frame_rate_index;
349 int last_lambda_for[5]; ///< last lambda for a specific pict type
350 int skipdct; ///< skip dct and code zero residual
351
352 /* motion compensation */
353 int unrestricted_mv; ///< mv can point outside of the coded picture
354 int h263_long_vectors; ///< use horrible h263v1 long vector mode
355
356 DSPContext dsp; ///< pointers for accelerated dsp functions
357 HpelDSPContext hdsp;
358 VideoDSPContext vdsp;
359 H263DSPContext h263dsp;
360 int f_code; ///< forward MV resolution
361 int b_code; ///< backward MV resolution for B Frames (mpeg4)
362 int16_t (*p_mv_table_base)[2];
363 int16_t (*b_forw_mv_table_base)[2];
364 int16_t (*b_back_mv_table_base)[2];
365 int16_t (*b_bidir_forw_mv_table_base)[2];
366 int16_t (*b_bidir_back_mv_table_base)[2];
367 int16_t (*b_direct_mv_table_base)[2];
368 int16_t (*p_field_mv_table_base[2][2])[2];
369 int16_t (*b_field_mv_table_base[2][2][2])[2];
370 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
371 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
372 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
373 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
374 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
375 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
376 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
377 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
378 uint8_t (*p_field_select_table[2]);
379 uint8_t (*b_field_select_table[2][2]);
380 int me_method; ///< ME algorithm
381 int mv_dir;
382 #define MV_DIR_FORWARD 1
383 #define MV_DIR_BACKWARD 2
384 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
385 int mv_type;
386 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
387 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
388 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
389 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
390 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
391 /**motion vectors for a macroblock
392 first coordinate : 0 = forward 1 = backward
393 second " : depend on type
394 third " : 0 = x, 1 = y
395 */
396 int mv[2][4][2];
397 int field_select[2][2];
398 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
399 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
400 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
401
402 MotionEstContext me;
403
404 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
405 for b-frames rounding mode is always 0 */
406
407 /* macroblock layer */
408 int mb_x, mb_y;
409 int mb_skip_run;
410 int mb_intra;
411 uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
412
413 int block_index[6]; ///< index to current MB in block based arrays with edges
414 int block_wrap[6];
415 uint8_t *dest[3];
416
417 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
418
419 /** matrix transmitted in the bitstream */
420 uint16_t intra_matrix[64];
421 uint16_t chroma_intra_matrix[64];
422 uint16_t inter_matrix[64];
423 uint16_t chroma_inter_matrix[64];
424 #define QUANT_BIAS_SHIFT 8
425 int intra_quant_bias; ///< bias for the quantizer
426 int inter_quant_bias; ///< bias for the quantizer
427 int min_qcoeff; ///< minimum encodable coefficient
428 int max_qcoeff; ///< maximum encodable coefficient
429 int ac_esc_length; ///< num of bits needed to encode the longest esc
430 uint8_t *intra_ac_vlc_length;
431 uint8_t *intra_ac_vlc_last_length;
432 uint8_t *inter_ac_vlc_length;
433 uint8_t *inter_ac_vlc_last_length;
434 uint8_t *luma_dc_vlc_length;
435 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
436
437 int coded_score[8];
438
439 /** precomputed matrix (combine qscale and DCT renorm) */
440 int (*q_intra_matrix)[64];
441 int (*q_inter_matrix)[64];
442 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
443 uint16_t (*q_intra_matrix16)[2][64];
444 uint16_t (*q_inter_matrix16)[2][64];
445
446 /* noise reduction */
447 int (*dct_error_sum)[64];
448 int dct_count[2];
449 uint16_t (*dct_offset)[64];
450
451 void *opaque; ///< private data for the user
452
453 /* bit rate control */
454 int64_t total_bits;
455 int frame_bits; ///< bits used for the current frame
456 int next_lambda; ///< next lambda used for retrying to encode a frame
457 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
458
459 /* statistics, used for 2-pass encoding */
460 int mv_bits;
461 int header_bits;
462 int i_tex_bits;
463 int p_tex_bits;
464 int i_count;
465 int f_count;
466 int b_count;
467 int skip_count;
468 int misc_bits; ///< cbp, mb_type
469 int last_bits; ///< temp var used for calculating the above vars
470
471 /* error concealment / resync */
472 int resync_mb_x; ///< x position of last resync marker
473 int resync_mb_y; ///< y position of last resync marker
474 GetBitContext last_resync_gb; ///< used to search for the next resync marker
475 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
476 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
477 int err_recognition;
478
479 ParseContext parse_context;
480
481 /* H.263 specific */
482 int gob_index;
483 int obmc; ///< overlapped block motion compensation
484 int mb_info; ///< interval for outputting info about mb offsets as side data
485 int prev_mb_info, last_mb_info;
486 uint8_t *mb_info_ptr;
487 int mb_info_size;
488
489 /* H.263+ specific */
490 int umvplus; ///< == H263+ && unrestricted_mv
491 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
492 int h263_slice_structured;
493 int alt_inter_vlc; ///< alternative inter vlc
494 int modified_quant;
495 int loop_filter;
496 int custom_pcf;
497
498 /* mpeg4 specific */
499 ///< number of bits to represent the fractional part of time (encoder only)
500 int time_increment_bits;
501 int last_time_base;
502 int time_base; ///< time in seconds of last I,P,S Frame
503 int64_t time; ///< time of current frame
504 int64_t last_non_b_time;
505 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
506 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
507 uint16_t pp_field_time;
508 uint16_t pb_field_time; ///< like above, just for interlaced
509 int real_sprite_warping_points;
510 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
511 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
512 int mcsel;
513 int quant_precision;
514 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
515 int aspect_ratio_info; //FIXME remove
516 int sprite_warping_accuracy;
517 int data_partitioning; ///< data partitioning flag from header
518 int partitioned_frame; ///< is current frame partitioned
519 int low_delay; ///< no reordering needed / has no b-frames
520 int vo_type;
521 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
522 PutBitContext tex_pb; ///< used for data partitioned VOPs
523 PutBitContext pb2; ///< used for data partitioned VOPs
524 int mpeg_quant;
525 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
526
527 /* divx specific, used to workaround (many) bugs in divx5 */
528 int divx_packed;
529 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
530 int bitstream_buffer_size;
531 unsigned int allocated_bitstream_buffer_size;
532
533 /* RV10 specific */
534 int rv10_version; ///< RV10 version: 0 or 3
535 int rv10_first_dc_coded[3];
536 int orig_width, orig_height;
537
538 /* MJPEG specific */
539 struct MJpegContext *mjpeg_ctx;
540
541 /* MSMPEG4 specific */
542 int mv_table_index;
543 int rl_table_index;
544 int rl_chroma_table_index;
545 int dc_table_index;
546 int use_skip_mb_code;
547 int slice_height; ///< in macroblocks
548 int first_slice_line; ///< used in mpeg4 too to handle resync markers
549 int flipflop_rounding;
550 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
551 int per_mb_rl_table;
552 int esc3_level_length;
553 int esc3_run_length;
554 /** [mb_intra][isChroma][level][run][last] */
555 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
556 int inter_intra_pred;
557 int mspel;
558
559 /* decompression specific */
560 GetBitContext gb;
561
562 /* Mpeg1 specific */
563 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
564 int last_mv_dir; ///< last mv_dir, used for b frame encoding
565 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
566
567 /* MPEG-2-specific - I wished not to have to support this mess. */
568 int progressive_sequence;
569 int mpeg_f_code[2][2];
570
571 // picture structure defines are loaded from mpegutils.h
572 int picture_structure;
573
574 int intra_dc_precision;
575 int frame_pred_frame_dct;
576 int top_field_first;
577 int concealment_motion_vectors;
578 int q_scale_type;
579 int intra_vlc_format;
580 int alternate_scan;
581 int repeat_first_field;
582 int chroma_420_type;
583 int chroma_format;
584 #define CHROMA_420 1
585 #define CHROMA_422 2
586 #define CHROMA_444 3
587 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
588 int chroma_y_shift;
589
590 int progressive_frame;
591 int full_pel[2];
592 int interlaced_dct;
593 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
594 int drop_frame_timecode; ///< timecode is in drop frame format.
595 int scan_offset; ///< reserve space for SVCD scan offset user data.
596
597 /* RTP specific */
598 int rtp_mode;
599
600 uint8_t *ptr_lastgob;
601 int16_t (*pblocks[12])[64];
602
603 int16_t (*block)[64]; ///< points to one of the following blocks
604 int16_t (*blocks)[8][64]; // for HQ mode we need to keep the best block
605 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
606 #define SLICE_OK 0
607 #define SLICE_ERROR -1
608 #define SLICE_END -2 ///<end marker found
609 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
610
611 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
612 int16_t *block/*align 16*/, int n, int qscale);
613 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
614 int16_t *block/*align 16*/, int n, int qscale);
615 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
616 int16_t *block/*align 16*/, int n, int qscale);
617 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
618 int16_t *block/*align 16*/, int n, int qscale);
619 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
620 int16_t *block/*align 16*/, int n, int qscale);
621 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
622 int16_t *block/*align 16*/, int n, int qscale);
623 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
624 int16_t *block/*align 16*/, int n, int qscale);
625 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
626 int16_t *block/*align 16*/, int n, int qscale);
627 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
628 int16_t *block/*align 16*/, int n, int qscale);
629 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
630 int16_t *block/*align 16*/, int n, int qscale);
631 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
632 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
633 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
634
635 int mpv_flags; ///< flags set by private options
636 int quantizer_noise_shaping;
637
638 /* temp buffers for rate control */
639 float *cplx_tab, *bits_tab;
640
641 /* flag to indicate a reinitialization is required, e.g. after
642 * a frame size change */
643 int context_reinit;
644
645 ERContext er;
646
647 int error_rate;
648
649 /* temporary frames used by b_frame_strategy = 2 */
650 AVFrame *tmp_frames[MAX_B_FRAMES + 2];
651 } MpegEncContext;
652
653 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
654 ((pic && pic >= old_ctx->picture && \
655 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
656 &new_ctx->picture[pic - old_ctx->picture] : NULL)
657
658 /* mpegvideo_enc common options */
659 #define FF_MPV_FLAG_SKIP_RD 0x0001
660 #define FF_MPV_FLAG_STRICT_GOP 0x0002
661 #define FF_MPV_FLAG_QP_RD 0x0004
662 #define FF_MPV_FLAG_CBP_RD 0x0008
663
664 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
665 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
666 #define FF_MPV_COMMON_OPTS \
667 { "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" },\
668 { "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" },\
669 { "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" },\
670 { "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" },\
671 { "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" },\
672 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
673 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
674 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
675 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
676 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
677 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
678 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
679
680 extern const AVOption ff_mpv_generic_options[];
681
682 #define FF_MPV_GENERIC_CLASS(name) \
683 static const AVClass name ## _class = {\
684 .class_name = #name " encoder",\
685 .item_name = av_default_item_name,\
686 .option = ff_mpv_generic_options,\
687 .version = LIBAVUTIL_VERSION_INT,\
688 };
689
690 /**
691 * Set the given MpegEncContext to common defaults (same for encoding
692 * and decoding). The changed fields will not depend upon the prior
693 * state of the MpegEncContext.
694 */
695 void ff_MPV_common_defaults(MpegEncContext *s);
696
697 void ff_MPV_decode_defaults(MpegEncContext *s);
698 int ff_MPV_common_init(MpegEncContext *s);
699 int ff_MPV_common_frame_size_change(MpegEncContext *s);
700 void ff_MPV_common_end(MpegEncContext *s);
701 void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
702 int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
703 void ff_MPV_frame_end(MpegEncContext *s);
704 int ff_MPV_encode_init(AVCodecContext *avctx);
705 int ff_MPV_encode_end(AVCodecContext *avctx);
706 int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
707 const AVFrame *frame, int *got_packet);
708 void ff_MPV_encode_init_x86(MpegEncContext *s);
709 void ff_MPV_common_init_x86(MpegEncContext *s);
710 void ff_MPV_common_init_arm(MpegEncContext *s);
711 void ff_MPV_common_init_ppc(MpegEncContext *s);
712 void ff_clean_intra_table_entries(MpegEncContext *s);
713 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
714 void ff_mpeg_flush(AVCodecContext *avctx);
715 void ff_print_debug_info(MpegEncContext *s, Picture *p);
716 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
717 int ff_find_unused_picture(MpegEncContext *s, int shared);
718 void ff_denoise_dct(MpegEncContext *s, int16_t *block);
719 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
720 int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir);
721 void ff_MPV_report_decode_progress(MpegEncContext *s);
722 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
723 void ff_set_qscale(MpegEncContext * s, int qscale);
724
725 /* Error resilience */
726 void ff_mpeg_er_frame_start(MpegEncContext *s);
727 void ff_mpeg_set_erpic(ERPicture *dst, Picture *src);
728
729 int ff_dct_common_init(MpegEncContext *s);
730 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
731 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
732 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
733
734 void ff_init_block_index(MpegEncContext *s);
735
736 void ff_MPV_motion(MpegEncContext *s,
737 uint8_t *dest_y, uint8_t *dest_cb,
738 uint8_t *dest_cr, int dir,
739 uint8_t **ref_picture,
740 op_pixels_func (*pix_op)[4],
741 qpel_mc_func (*qpix_op)[16]);
742
743 /**
744 * Allocate a Picture.
745 * The pixels are allocated/set by calling get_buffer() if shared = 0.
746 */
747 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
748
749 extern const enum AVPixelFormat ff_pixfmt_list_420[];
750
751 /**
752 * permute block according to permuatation.
753 * @param last last non zero element in scantable order
754 */
755 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
756
757 static inline void ff_update_block_index(MpegEncContext *s){
758 const int block_size = 8;
759
760 s->block_index[0]+=2;
761 s->block_index[1]+=2;
762 s->block_index[2]+=2;
763 s->block_index[3]+=2;
764 s->block_index[4]++;
765 s->block_index[5]++;
766 s->dest[0]+= 2*block_size;
767 s->dest[1]+= block_size;
768 s->dest[2]+= block_size;
769 }
770
771 static inline int get_bits_diff(MpegEncContext *s){
772 const int bits= put_bits_count(&s->pb);
773 const int last= s->last_bits;
774
775 s->last_bits = bits;
776
777 return bits - last;
778 }
779
780 static inline int ff_h263_round_chroma(int x){
781 static const uint8_t h263_chroma_roundtab[16] = {
782 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
783 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
784 };
785 return h263_chroma_roundtab[x & 0xf] + (x >> 3);
786 }
787
788 /* motion_est.c */
789 void ff_estimate_p_frame_motion(MpegEncContext * s,
790 int mb_x, int mb_y);
791 void ff_estimate_b_frame_motion(MpegEncContext * s,
792 int mb_x, int mb_y);
793 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
794 void ff_fix_long_p_mvs(MpegEncContext * s);
795 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
796 int16_t (*mv_table)[2], int f_code, int type, int truncate);
797 int ff_init_me(MpegEncContext *s);
798 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
799 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
800 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
801 int ref_mv_scale, int size, int h);
802 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
803 int ref_index, int size, int h, int add_rate);
804
805 /* mpeg12.c */
806 extern const uint8_t ff_mpeg1_dc_scale_table[128];
807 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
808
809 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
810 void ff_mpeg1_encode_mb(MpegEncContext *s,
811 int16_t block[6][64],
812 int motion_x, int motion_y);
813 void ff_mpeg1_encode_init(MpegEncContext *s);
814 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
815
816 extern const uint8_t ff_aic_dc_scale_table[32];
817 extern const uint8_t ff_h263_chroma_qscale_table[32];
818
819 /* rv10.c */
820 void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
821 int ff_rv_decode_dc(MpegEncContext *s, int n);
822 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
823
824
825 /* msmpeg4.c */
826 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
827 void ff_msmpeg4_encode_ext_header(MpegEncContext * s);
828 void ff_msmpeg4_encode_mb(MpegEncContext * s,
829 int16_t block[6][64],
830 int motion_x, int motion_y);
831 int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
832 int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
833 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
834 void ff_msmpeg4_encode_init(MpegEncContext *s);
835 int ff_wmv2_decode_picture_header(MpegEncContext * s);
836 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
837 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
838 void ff_mspel_motion(MpegEncContext *s,
839 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
840 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
841 int motion_x, int motion_y, int h);
842 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
843 void ff_wmv2_encode_mb(MpegEncContext * s,
844 int16_t block[6][64],
845 int motion_x, int motion_y);
846
847 int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src);
848 void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture);
849 void ff_free_picture_tables(Picture *pic);
850
851 #endif /* AVCODEC_MPEGVIDEO_H */