lavc: Split out ff_hwaccel_pixfmt_list_420[] over individual codecs
[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 "put_bits.h"
36 #include "ratecontrol.h"
37 #include "parser.h"
38 #include "mpeg12data.h"
39 #include "rl.h"
40 #include "videodsp.h"
41
42 #include "libavutil/opt.h"
43
44 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
45
46 enum OutputFormat {
47 FMT_MPEG1,
48 FMT_H261,
49 FMT_H263,
50 FMT_MJPEG,
51 FMT_H264,
52 };
53
54 #define MPEG_BUF_SIZE (16 * 1024)
55
56 #define QMAT_SHIFT_MMX 16
57 #define QMAT_SHIFT 22
58
59 #define MAX_FCODE 7
60 #define MAX_MV 2048
61
62 #define MAX_THREADS 16
63
64 #define MAX_PICTURE_COUNT 32
65
66 #define ME_MAP_SIZE 64
67 #define ME_MAP_SHIFT 3
68 #define ME_MAP_MV_BITS 11
69
70 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
71
72 #define INPLACE_OFFSET 16
73
74 /* Start codes. */
75 #define SEQ_END_CODE 0x000001b7
76 #define SEQ_START_CODE 0x000001b3
77 #define GOP_START_CODE 0x000001b8
78 #define PICTURE_START_CODE 0x00000100
79 #define SLICE_MIN_START_CODE 0x00000101
80 #define SLICE_MAX_START_CODE 0x000001af
81 #define EXT_START_CODE 0x000001b5
82 #define USER_START_CODE 0x000001b2
83
84 /**
85 * Value of Picture.reference when Picture is not a reference picture, but
86 * is held for delayed output.
87 */
88 #define DELAYED_PIC_REF 4
89
90 struct MpegEncContext;
91
92 /**
93 * Picture.
94 */
95 typedef struct Picture{
96 struct AVFrame f;
97
98 int8_t *qscale_table_base;
99 int16_t (*motion_val_base[2])[2];
100 uint32_t *mb_type_base;
101 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
102 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
103 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
104 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
105 #define IS_INTRA(a) ((a)&7)
106 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
107 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
108 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
109 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
110 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
111 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
112 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
113 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
114 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
115 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
116 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
117 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
118 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
119 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
120 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
121 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
122 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
123 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs
124 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
125
126 int field_poc[2]; ///< h264 top/bottom POC
127 int poc; ///< h264 frame POC
128 int frame_num; ///< h264 frame_num (raw frame_num from slice header)
129 int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
130 int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
131 pic_num & max_pic_num; long -> long_pic_num) */
132 int long_ref; ///< 1->long term reference 0->short term reference
133 int ref_poc[2][2][32]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
134 int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
135 int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
136 int field_picture; ///< whether or not the picture was encoded in separate fields
137
138 int mb_var_sum; ///< sum of MB variance for current frame
139 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
140 uint16_t *mb_var; ///< Table for MB variances
141 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
142 uint8_t *mb_mean; ///< Table for MB luminance
143 int b_frame_score; /* */
144 void *owner2; ///< pointer to the context that allocated this picture
145 int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
146 } Picture;
147
148 /**
149 * Motion estimation context.
150 */
151 typedef struct MotionEstContext{
152 AVCodecContext *avctx;
153 int skip; ///< set if ME is skipped for the current MB
154 int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
155 int direct_basis_mv[4][2];
156 uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
157 uint8_t *best_mb;
158 uint8_t *temp_mb[2];
159 uint8_t *temp;
160 int best_bits;
161 uint32_t *map; ///< map to avoid duplicate evaluations
162 uint32_t *score_map; ///< map to store the scores
163 unsigned map_generation;
164 int pre_penalty_factor;
165 int penalty_factor; /**< an estimate of the bits required to
166 code a given mv value, e.g. (1,0) takes
167 more bits than (0,0). We have to
168 estimate whether any reduction in
169 residual is worth the extra bits. */
170 int sub_penalty_factor;
171 int mb_penalty_factor;
172 int flags;
173 int sub_flags;
174 int mb_flags;
175 int pre_pass; ///< = 1 for the pre pass
176 int dia_size;
177 int xmin;
178 int xmax;
179 int ymin;
180 int ymax;
181 int pred_x;
182 int pred_y;
183 uint8_t *src[4][4];
184 uint8_t *ref[4][4];
185 int stride;
186 int uvstride;
187 /* temp variables for picture complexity calculation */
188 int mc_mb_var_sum_temp;
189 int mb_var_sum_temp;
190 int scene_change_score;
191 /* cmp, chroma_cmp;*/
192 op_pixels_func (*hpel_put)[4];
193 op_pixels_func (*hpel_avg)[4];
194 qpel_mc_func (*qpel_put)[16];
195 qpel_mc_func (*qpel_avg)[16];
196 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
197 uint8_t *current_mv_penalty;
198 int (*sub_motion_search)(struct MpegEncContext * s,
199 int *mx_ptr, int *my_ptr, int dmin,
200 int src_index, int ref_index,
201 int size, int h);
202 }MotionEstContext;
203
204 /**
205 * MpegEncContext.
206 */
207 typedef struct MpegEncContext {
208 AVClass *class;
209 struct AVCodecContext *avctx;
210 /* the following parameters must be initialized before encoding */
211 int width, height;///< picture size. must be a multiple of 16
212 int gop_size;
213 int intra_only; ///< if true, only intra pictures are generated
214 int bit_rate; ///< wanted bit rate
215 enum OutputFormat out_format; ///< output format
216 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
217 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
218
219 /* the following codec id fields are deprecated in favor of codec_id */
220 int h263_plus; ///< h263 plus headers
221 int h263_flv; ///< use flv h263 header
222
223 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
224 int fixed_qscale; ///< fixed qscale if non zero
225 int encoding; ///< true if we are encoding (vs decoding)
226 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
227 int flags2; ///< AVCodecContext.flags2
228 int max_b_frames; ///< max number of b-frames for encoding
229 int luma_elim_threshold;
230 int chroma_elim_threshold;
231 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
232 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
233 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
234 int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
235 /* the following fields are managed internally by the encoder */
236
237 /* sequence parameters */
238 int context_initialized;
239 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
240 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
241 int picture_number; //FIXME remove, unclear definition
242 int picture_in_gop_number; ///< 0-> first pic in gop, ...
243 int mb_width, mb_height; ///< number of MBs horizontally & vertically
244 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
245 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
246 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
247 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
248 int mb_num; ///< number of MBs of a picture
249 int linesize; ///< line size, in bytes, may be different from width
250 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
251 Picture *picture; ///< main picture buffer
252 Picture **input_picture; ///< next pictures on display order for encoding
253 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
254
255 int y_dc_scale, c_dc_scale;
256 int ac_pred;
257 int block_last_index[12]; ///< last non zero coefficient in block
258 int h263_aic; ///< Advanded INTRA Coding (AIC)
259
260 /* scantables */
261 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
262 ScanTable intra_scantable;
263 ScanTable intra_h_scantable;
264 ScanTable intra_v_scantable;
265
266 /* WARNING: changes above this line require updates to hardcoded
267 * offsets used in asm. */
268
269 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
270 /**
271 * pts difference between the first and second input frame, used for
272 * calculating dts of the first frame when there's a delay */
273 int64_t dts_delta;
274 /**
275 * reordered pts to be used as dts for the next output frame when there's
276 * a delay */
277 int64_t reordered_pts;
278
279 /** bit output */
280 PutBitContext pb;
281
282 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
283 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
284 struct MpegEncContext *thread_context[MAX_THREADS];
285 int slice_context_count; ///< number of used thread_contexts
286
287 /**
288 * copy of the previous picture structure.
289 * note, linesize & data, might not match the previous picture (for field pictures)
290 */
291 Picture last_picture;
292
293 /**
294 * copy of the next picture structure.
295 * note, linesize & data, might not match the next picture (for field pictures)
296 */
297 Picture next_picture;
298
299 /**
300 * copy of the source picture structure for encoding.
301 * note, linesize & data, might not match the source picture (for field pictures)
302 */
303 Picture new_picture;
304
305 /**
306 * copy of the current picture structure.
307 * note, linesize & data, might not match the current picture (for field pictures)
308 */
309 Picture current_picture; ///< buffer to store the decompressed current picture
310
311 Picture *last_picture_ptr; ///< pointer to the previous picture.
312 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
313 Picture *current_picture_ptr; ///< pointer to the current picture
314 int picture_count; ///< number of allocated pictures (MAX_PICTURE_COUNT * avctx->thread_count)
315 int picture_range_start, picture_range_end; ///< the part of picture that this context can allocate in
316 uint8_t *visualization_buffer[3]; ///< temporary buffer vor MV visualization
317 int last_dc[3]; ///< last DC values for MPEG1
318 int16_t *dc_val_base;
319 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
320 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
321 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
322 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
323 uint8_t *coded_block_base;
324 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
325 int16_t (*ac_val_base)[16];
326 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
327 int mb_skipped; ///< MUST BE SET only during DECODING
328 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
329 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
330 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
331 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
332 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
333 uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
334 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
335 uint8_t *obmc_scratchpad;
336 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
337
338 int qscale; ///< QP
339 int chroma_qscale; ///< chroma QP
340 unsigned int lambda; ///< lagrange multipler used in rate distortion
341 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
342 int *lambda_table;
343 int adaptive_quant; ///< use adaptive quantization
344 int dquant; ///< qscale difference to prev qscale
345 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
346 int last_pict_type; //FIXME removes
347 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
348 int droppable;
349 int frame_rate_index;
350 int last_lambda_for[5]; ///< last lambda for a specific pict type
351 int skipdct; ///< skip dct and code zero residual
352
353 /* motion compensation */
354 int unrestricted_mv; ///< mv can point outside of the coded picture
355 int h263_long_vectors; ///< use horrible h263v1 long vector mode
356
357 DSPContext dsp; ///< pointers for accelerated dsp functions
358 VideoDSPContext vdsp;
359 int f_code; ///< forward MV resolution
360 int b_code; ///< backward MV resolution for B Frames (mpeg4)
361 int16_t (*p_mv_table_base)[2];
362 int16_t (*b_forw_mv_table_base)[2];
363 int16_t (*b_back_mv_table_base)[2];
364 int16_t (*b_bidir_forw_mv_table_base)[2];
365 int16_t (*b_bidir_back_mv_table_base)[2];
366 int16_t (*b_direct_mv_table_base)[2];
367 int16_t (*p_field_mv_table_base[2][2])[2];
368 int16_t (*b_field_mv_table_base[2][2][2])[2];
369 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
370 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
371 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
372 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
373 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
374 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
375 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
376 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
377 uint8_t (*p_field_select_table[2]);
378 uint8_t (*b_field_select_table[2][2]);
379 int me_method; ///< ME algorithm
380 int mv_dir;
381 #define MV_DIR_FORWARD 1
382 #define MV_DIR_BACKWARD 2
383 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
384 int mv_type;
385 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
386 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
387 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
388 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
389 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
390 /**motion vectors for a macroblock
391 first coordinate : 0 = forward 1 = backward
392 second " : depend on type
393 third " : 0 = x, 1 = y
394 */
395 int mv[2][4][2];
396 int field_select[2][2];
397 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
398 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
399 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
400
401 MotionEstContext me;
402
403 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
404 for b-frames rounding mode is always 0 */
405
406 /* macroblock layer */
407 int mb_x, mb_y;
408 int mb_skip_run;
409 int mb_intra;
410 uint16_t *mb_type; ///< Table for candidate MB types for encoding
411 #define CANDIDATE_MB_TYPE_INTRA 0x01
412 #define CANDIDATE_MB_TYPE_INTER 0x02
413 #define CANDIDATE_MB_TYPE_INTER4V 0x04
414 #define CANDIDATE_MB_TYPE_SKIPPED 0x08
415 //#define MB_TYPE_GMC 0x10
416
417 #define CANDIDATE_MB_TYPE_DIRECT 0x10
418 #define CANDIDATE_MB_TYPE_FORWARD 0x20
419 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
420 #define CANDIDATE_MB_TYPE_BIDIR 0x80
421
422 #define CANDIDATE_MB_TYPE_INTER_I 0x100
423 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
424 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
425 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
426
427 #define CANDIDATE_MB_TYPE_DIRECT0 0x1000
428
429 int block_index[6]; ///< index to current MB in block based arrays with edges
430 int block_wrap[6];
431 uint8_t *dest[3];
432
433 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
434
435 /** matrix transmitted in the bitstream */
436 uint16_t intra_matrix[64];
437 uint16_t chroma_intra_matrix[64];
438 uint16_t inter_matrix[64];
439 uint16_t chroma_inter_matrix[64];
440 #define QUANT_BIAS_SHIFT 8
441 int intra_quant_bias; ///< bias for the quantizer
442 int inter_quant_bias; ///< bias for the quantizer
443 int min_qcoeff; ///< minimum encodable coefficient
444 int max_qcoeff; ///< maximum encodable coefficient
445 int ac_esc_length; ///< num of bits needed to encode the longest esc
446 uint8_t *intra_ac_vlc_length;
447 uint8_t *intra_ac_vlc_last_length;
448 uint8_t *inter_ac_vlc_length;
449 uint8_t *inter_ac_vlc_last_length;
450 uint8_t *luma_dc_vlc_length;
451 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
452
453 int coded_score[8];
454
455 /** precomputed matrix (combine qscale and DCT renorm) */
456 int (*q_intra_matrix)[64];
457 int (*q_inter_matrix)[64];
458 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
459 uint16_t (*q_intra_matrix16)[2][64];
460 uint16_t (*q_inter_matrix16)[2][64];
461
462 /* noise reduction */
463 int (*dct_error_sum)[64];
464 int dct_count[2];
465 uint16_t (*dct_offset)[64];
466
467 void *opaque; ///< private data for the user
468
469 /* bit rate control */
470 int64_t total_bits;
471 int frame_bits; ///< bits used for the current frame
472 int next_lambda; ///< next lambda used for retrying to encode a frame
473 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
474
475 /* statistics, used for 2-pass encoding */
476 int mv_bits;
477 int header_bits;
478 int i_tex_bits;
479 int p_tex_bits;
480 int i_count;
481 int f_count;
482 int b_count;
483 int skip_count;
484 int misc_bits; ///< cbp, mb_type
485 int last_bits; ///< temp var used for calculating the above vars
486
487 /* error concealment / resync */
488 int resync_mb_x; ///< x position of last resync marker
489 int resync_mb_y; ///< y position of last resync marker
490 GetBitContext last_resync_gb; ///< used to search for the next resync marker
491 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
492 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
493 int err_recognition;
494
495 ParseContext parse_context;
496
497 /* H.263 specific */
498 int gob_index;
499 int obmc; ///< overlapped block motion compensation
500 int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames
501 int mb_info; ///< interval for outputting info about mb offsets as side data
502 int prev_mb_info, last_mb_info;
503 uint8_t *mb_info_ptr;
504 int mb_info_size;
505
506 /* H.263+ specific */
507 int umvplus; ///< == H263+ && unrestricted_mv
508 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
509 int h263_slice_structured;
510 int alt_inter_vlc; ///< alternative inter vlc
511 int modified_quant;
512 int loop_filter;
513 int custom_pcf;
514
515 /* mpeg4 specific */
516 int time_increment_bits; ///< number of bits to represent the fractional part of time
517 int last_time_base;
518 int time_base; ///< time in seconds of last I,P,S Frame
519 int64_t time; ///< time of current frame
520 int64_t last_non_b_time;
521 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
522 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
523 uint16_t pp_field_time;
524 uint16_t pb_field_time; ///< like above, just for interlaced
525 int shape;
526 int vol_sprite_usage;
527 int sprite_width;
528 int sprite_height;
529 int sprite_left;
530 int sprite_top;
531 int sprite_brightness_change;
532 int num_sprite_warping_points;
533 int real_sprite_warping_points;
534 uint16_t sprite_traj[4][2]; ///< sprite trajectory points
535 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
536 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
537 int sprite_shift[2]; ///< sprite shift [isChroma]
538 int mcsel;
539 int quant_precision;
540 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
541 int scalability;
542 int hierachy_type;
543 int enhancement_type;
544 int new_pred;
545 int reduced_res_vop;
546 int aspect_ratio_info; //FIXME remove
547 int sprite_warping_accuracy;
548 int low_latency_sprite;
549 int data_partitioning; ///< data partitioning flag from header
550 int partitioned_frame; ///< is current frame partitioned
551 int rvlc; ///< reversible vlc
552 int resync_marker; ///< could this stream contain resync markers
553 int low_delay; ///< no reordering needed / has no b-frames
554 int vo_type;
555 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
556 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
557 int use_intra_dc_vlc;
558 PutBitContext tex_pb; ///< used for data partitioned VOPs
559 PutBitContext pb2; ///< used for data partitioned VOPs
560 int mpeg_quant;
561 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
562 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
563 int cplx_estimation_trash_i;
564 int cplx_estimation_trash_p;
565 int cplx_estimation_trash_b;
566
567 /* divx specific, used to workaround (many) bugs in divx5 */
568 int divx_version;
569 int divx_build;
570 int divx_packed;
571 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
572 int bitstream_buffer_size;
573 unsigned int allocated_bitstream_buffer_size;
574
575 int xvid_build;
576
577 /* lavc specific stuff, used to workaround bugs in libavcodec */
578 int lavc_build;
579
580 /* RV10 specific */
581 int rv10_version; ///< RV10 version: 0 or 3
582 int rv10_first_dc_coded[3];
583 int orig_width, orig_height;
584
585 /* MJPEG specific */
586 struct MJpegContext *mjpeg_ctx;
587 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
588 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
589
590 /* MSMPEG4 specific */
591 int mv_table_index;
592 int rl_table_index;
593 int rl_chroma_table_index;
594 int dc_table_index;
595 int use_skip_mb_code;
596 int slice_height; ///< in macroblocks
597 int first_slice_line; ///< used in mpeg4 too to handle resync markers
598 int flipflop_rounding;
599 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
600 int per_mb_rl_table;
601 int esc3_level_length;
602 int esc3_run_length;
603 /** [mb_intra][isChroma][level][run][last] */
604 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
605 int inter_intra_pred;
606 int mspel;
607
608 /* decompression specific */
609 GetBitContext gb;
610
611 /* Mpeg1 specific */
612 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
613 int last_mv_dir; ///< last mv_dir, used for b frame encoding
614 int broken_link; ///< no_output_of_prior_pics_flag
615 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
616
617 /* MPEG-2-specific - I wished not to have to support this mess. */
618 int progressive_sequence;
619 int mpeg_f_code[2][2];
620 int picture_structure;
621 /* picture type */
622 #define PICT_TOP_FIELD 1
623 #define PICT_BOTTOM_FIELD 2
624 #define PICT_FRAME 3
625
626 int intra_dc_precision;
627 int frame_pred_frame_dct;
628 int top_field_first;
629 int concealment_motion_vectors;
630 int q_scale_type;
631 int intra_vlc_format;
632 int alternate_scan;
633 int repeat_first_field;
634 int chroma_420_type;
635 int chroma_format;
636 #define CHROMA_420 1
637 #define CHROMA_422 2
638 #define CHROMA_444 3
639 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
640 int chroma_y_shift;
641
642 int progressive_frame;
643 int full_pel[2];
644 int interlaced_dct;
645 int first_slice;
646 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
647 int drop_frame_timecode; ///< timecode is in drop frame format.
648 int scan_offset; ///< reserve space for SVCD scan offset user data.
649
650 /* RTP specific */
651 int rtp_mode;
652
653 uint8_t *ptr_lastgob;
654 int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
655 int16_t (*pblocks[12])[64];
656
657 int16_t (*block)[64]; ///< points to one of the following blocks
658 int16_t (*blocks)[8][64]; // for HQ mode we need to keep the best block
659 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
660 #define SLICE_OK 0
661 #define SLICE_ERROR -1
662 #define SLICE_END -2 ///<end marker found
663 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
664
665 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
666 int16_t *block/*align 16*/, int n, int qscale);
667 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
668 int16_t *block/*align 16*/, int n, int qscale);
669 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
670 int16_t *block/*align 16*/, int n, int qscale);
671 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
672 int16_t *block/*align 16*/, int n, int qscale);
673 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
674 int16_t *block/*align 16*/, int n, int qscale);
675 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
676 int16_t *block/*align 16*/, int n, int qscale);
677 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
678 int16_t *block/*align 16*/, int n, int qscale);
679 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
680 int16_t *block/*align 16*/, int n, int qscale);
681 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
682 int16_t *block/*align 16*/, int n, int qscale);
683 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
684 int16_t *block/*align 16*/, int n, int qscale);
685 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
686 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
687 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
688
689 int mpv_flags; ///< flags set by private options
690 int quantizer_noise_shaping;
691
692 /* temp buffers for rate control */
693 float *cplx_tab, *bits_tab;
694
695 /* flag to indicate a reinitialization is required, e.g. after
696 * a frame size change */
697 int context_reinit;
698
699 ERContext er;
700 } MpegEncContext;
701
702 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
703 ((pic && pic >= old_ctx->picture && \
704 pic < old_ctx->picture + old_ctx->picture_count) ? \
705 &new_ctx->picture[pic - old_ctx->picture] : NULL)
706
707 /* mpegvideo_enc common options */
708 #define FF_MPV_FLAG_SKIP_RD 0x0001
709 #define FF_MPV_FLAG_STRICT_GOP 0x0002
710 #define FF_MPV_FLAG_QP_RD 0x0004
711 #define FF_MPV_FLAG_CBP_RD 0x0008
712
713 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
714 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
715 #define FF_MPV_COMMON_OPTS \
716 { "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" },\
717 { "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" },\
718 { "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" },\
719 { "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" },\
720 { "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" },\
721 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
722 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
723 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
724 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
725 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
726
727 extern const AVOption ff_mpv_generic_options[];
728
729 #define FF_MPV_GENERIC_CLASS(name) \
730 static const AVClass name ## _class = {\
731 .class_name = #name " encoder",\
732 .item_name = av_default_item_name,\
733 .option = ff_mpv_generic_options,\
734 .version = LIBAVUTIL_VERSION_INT,\
735 };
736
737 /**
738 * Set the given MpegEncContext to common defaults (same for encoding
739 * and decoding). The changed fields will not depend upon the prior
740 * state of the MpegEncContext.
741 */
742 void ff_MPV_common_defaults(MpegEncContext *s);
743
744 void ff_MPV_decode_defaults(MpegEncContext *s);
745 int ff_MPV_common_init(MpegEncContext *s);
746 int ff_mpv_frame_size_alloc(MpegEncContext *s, int linesize);
747 int ff_MPV_common_frame_size_change(MpegEncContext *s);
748 void ff_MPV_common_end(MpegEncContext *s);
749 void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
750 int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
751 void ff_MPV_frame_end(MpegEncContext *s);
752 int ff_MPV_encode_init(AVCodecContext *avctx);
753 int ff_MPV_encode_end(AVCodecContext *avctx);
754 int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
755 const AVFrame *frame, int *got_packet);
756 void ff_MPV_encode_init_x86(MpegEncContext *s);
757 void ff_MPV_common_init_x86(MpegEncContext *s);
758 void ff_MPV_common_init_axp(MpegEncContext *s);
759 void ff_MPV_common_init_arm(MpegEncContext *s);
760 void ff_MPV_common_init_altivec(MpegEncContext *s);
761 void ff_MPV_common_init_bfin(MpegEncContext *s);
762 void ff_clean_intra_table_entries(MpegEncContext *s);
763 void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur,
764 Picture *last, int y, int h, int picture_structure,
765 int first_field, int draw_edges, int low_delay,
766 int v_edge_pos, int h_edge_pos);
767 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
768 void ff_mpeg_flush(AVCodecContext *avctx);
769 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
770 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
771 void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
772 int ff_find_unused_picture(MpegEncContext *s, int shared);
773 void ff_denoise_dct(MpegEncContext *s, int16_t *block);
774 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
775 int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir);
776 void ff_MPV_report_decode_progress(MpegEncContext *s);
777 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
778 const uint8_t *avpriv_mpv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
779 void ff_set_qscale(MpegEncContext * s, int qscale);
780
781 void ff_mpeg_er_frame_start(MpegEncContext *s);
782
783 int ff_dct_common_init(MpegEncContext *s);
784 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
785 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
786 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
787
788 void ff_init_block_index(MpegEncContext *s);
789 void ff_copy_picture(Picture *dst, Picture *src);
790
791 void ff_MPV_motion(MpegEncContext *s,
792 uint8_t *dest_y, uint8_t *dest_cb,
793 uint8_t *dest_cr, int dir,
794 uint8_t **ref_picture,
795 op_pixels_func (*pix_op)[4],
796 qpel_mc_func (*qpix_op)[16]);
797
798 /**
799 * Allocate a Picture.
800 * The pixels are allocated/set by calling get_buffer() if shared = 0.
801 */
802 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
803
804 extern const enum AVPixelFormat ff_pixfmt_list_420[];
805
806 /**
807 * permute block according to permuatation.
808 * @param last last non zero element in scantable order
809 */
810 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
811
812 static inline void ff_update_block_index(MpegEncContext *s){
813 const int block_size = 8;
814
815 s->block_index[0]+=2;
816 s->block_index[1]+=2;
817 s->block_index[2]+=2;
818 s->block_index[3]+=2;
819 s->block_index[4]++;
820 s->block_index[5]++;
821 s->dest[0]+= 2*block_size;
822 s->dest[1]+= block_size;
823 s->dest[2]+= block_size;
824 }
825
826 static inline int get_bits_diff(MpegEncContext *s){
827 const int bits= put_bits_count(&s->pb);
828 const int last= s->last_bits;
829
830 s->last_bits = bits;
831
832 return bits - last;
833 }
834
835 static inline int ff_h263_round_chroma(int x){
836 static const uint8_t h263_chroma_roundtab[16] = {
837 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
838 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
839 };
840 return h263_chroma_roundtab[x & 0xf] + (x >> 3);
841 }
842
843 /* motion_est.c */
844 void ff_estimate_p_frame_motion(MpegEncContext * s,
845 int mb_x, int mb_y);
846 void ff_estimate_b_frame_motion(MpegEncContext * s,
847 int mb_x, int mb_y);
848 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
849 void ff_fix_long_p_mvs(MpegEncContext * s);
850 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
851 int16_t (*mv_table)[2], int f_code, int type, int truncate);
852 int ff_init_me(MpegEncContext *s);
853 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
854 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
855 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
856 int ref_mv_scale, int size, int h);
857 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
858 int ref_index, int size, int h, int add_rate);
859
860 /* mpeg12.c */
861 extern const uint8_t ff_mpeg1_dc_scale_table[128];
862 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
863
864 void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
865 void ff_mpeg1_encode_mb(MpegEncContext *s,
866 int16_t block[6][64],
867 int motion_x, int motion_y);
868 void ff_mpeg1_encode_init(MpegEncContext *s);
869 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
870 void ff_mpeg1_clean_buffers(MpegEncContext *s);
871 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
872
873 extern const uint8_t ff_aic_dc_scale_table[32];
874 extern const uint8_t ff_h263_chroma_qscale_table[32];
875 extern const uint8_t ff_h263_loop_filter_strength[32];
876
877 /* h261.c */
878 void ff_h261_loop_filter(MpegEncContext *s);
879 void ff_h261_reorder_mb_index(MpegEncContext* s);
880 void ff_h261_encode_mb(MpegEncContext *s,
881 int16_t block[6][64],
882 int motion_x, int motion_y);
883 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
884 void ff_h261_encode_init(MpegEncContext *s);
885 int ff_h261_get_picture_format(int width, int height);
886
887
888 /* rv10.c */
889 void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
890 int ff_rv_decode_dc(MpegEncContext *s, int n);
891 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
892
893
894 /* msmpeg4.c */
895 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
896 void ff_msmpeg4_encode_ext_header(MpegEncContext * s);
897 void ff_msmpeg4_encode_mb(MpegEncContext * s,
898 int16_t block[6][64],
899 int motion_x, int motion_y);
900 int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
901 int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
902 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
903 void ff_msmpeg4_encode_init(MpegEncContext *s);
904 int ff_wmv2_decode_picture_header(MpegEncContext * s);
905 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
906 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
907 void ff_mspel_motion(MpegEncContext *s,
908 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
909 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
910 int motion_x, int motion_y, int h);
911 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
912 void ff_wmv2_encode_mb(MpegEncContext * s,
913 int16_t block[6][64],
914 int motion_x, int motion_y);
915
916 #endif /* AVCODEC_MPEGVIDEO_H */