Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 8f6260af

History | View | Annotate | Download (87.4 KB)

1
/*
2
 * copyright (c) 2001 Fabrice Bellard
3
 *
4
 * This file is part of FFmpeg.
5
 *
6
 * FFmpeg is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2.1 of the License, or (at your option) any later version.
10
 *
11
 * FFmpeg is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
17
 * License along with FFmpeg; if not, write to the Free Software
18
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
19
 */
20

    
21
#ifndef AVCODEC_H
22
#define AVCODEC_H
23

    
24
/**
25
 * @file avcodec.h
26
 * external api header.
27
 */
28

    
29

    
30
#ifdef __cplusplus
31
extern "C" {
32
#endif
33

    
34
#include "avutil.h"
35
#include <sys/types.h> /* size_t */
36

    
37
#define AV_STRINGIFY(s)         AV_TOSTRING(s)
38
#define AV_TOSTRING(s) #s
39

    
40
#define LIBAVCODEC_VERSION_INT  ((51<<16)+(34<<8)+0)
41
#define LIBAVCODEC_VERSION      51.34.0
42
#define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
43

    
44
#define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
45

    
46
#define AV_NOPTS_VALUE          INT64_C(0x8000000000000000)
47
#define AV_TIME_BASE            1000000
48
#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
49

    
50
enum CodecID {
51
    CODEC_ID_NONE,
52
    CODEC_ID_MPEG1VIDEO,
53
    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
54
    CODEC_ID_MPEG2VIDEO_XVMC,
55
    CODEC_ID_H261,
56
    CODEC_ID_H263,
57
    CODEC_ID_RV10,
58
    CODEC_ID_RV20,
59
    CODEC_ID_MJPEG,
60
    CODEC_ID_MJPEGB,
61
    CODEC_ID_LJPEG,
62
    CODEC_ID_SP5X,
63
    CODEC_ID_JPEGLS,
64
    CODEC_ID_MPEG4,
65
    CODEC_ID_RAWVIDEO,
66
    CODEC_ID_MSMPEG4V1,
67
    CODEC_ID_MSMPEG4V2,
68
    CODEC_ID_MSMPEG4V3,
69
    CODEC_ID_WMV1,
70
    CODEC_ID_WMV2,
71
    CODEC_ID_H263P,
72
    CODEC_ID_H263I,
73
    CODEC_ID_FLV1,
74
    CODEC_ID_SVQ1,
75
    CODEC_ID_SVQ3,
76
    CODEC_ID_DVVIDEO,
77
    CODEC_ID_HUFFYUV,
78
    CODEC_ID_CYUV,
79
    CODEC_ID_H264,
80
    CODEC_ID_INDEO3,
81
    CODEC_ID_VP3,
82
    CODEC_ID_THEORA,
83
    CODEC_ID_ASV1,
84
    CODEC_ID_ASV2,
85
    CODEC_ID_FFV1,
86
    CODEC_ID_4XM,
87
    CODEC_ID_VCR1,
88
    CODEC_ID_CLJR,
89
    CODEC_ID_MDEC,
90
    CODEC_ID_ROQ,
91
    CODEC_ID_INTERPLAY_VIDEO,
92
    CODEC_ID_XAN_WC3,
93
    CODEC_ID_XAN_WC4,
94
    CODEC_ID_RPZA,
95
    CODEC_ID_CINEPAK,
96
    CODEC_ID_WS_VQA,
97
    CODEC_ID_MSRLE,
98
    CODEC_ID_MSVIDEO1,
99
    CODEC_ID_IDCIN,
100
    CODEC_ID_8BPS,
101
    CODEC_ID_SMC,
102
    CODEC_ID_FLIC,
103
    CODEC_ID_TRUEMOTION1,
104
    CODEC_ID_VMDVIDEO,
105
    CODEC_ID_MSZH,
106
    CODEC_ID_ZLIB,
107
    CODEC_ID_QTRLE,
108
    CODEC_ID_SNOW,
109
    CODEC_ID_TSCC,
110
    CODEC_ID_ULTI,
111
    CODEC_ID_QDRAW,
112
    CODEC_ID_VIXL,
113
    CODEC_ID_QPEG,
114
    CODEC_ID_XVID,
115
    CODEC_ID_PNG,
116
    CODEC_ID_PPM,
117
    CODEC_ID_PBM,
118
    CODEC_ID_PGM,
119
    CODEC_ID_PGMYUV,
120
    CODEC_ID_PAM,
121
    CODEC_ID_FFVHUFF,
122
    CODEC_ID_RV30,
123
    CODEC_ID_RV40,
124
    CODEC_ID_VC1,
125
    CODEC_ID_WMV3,
126
    CODEC_ID_LOCO,
127
    CODEC_ID_WNV1,
128
    CODEC_ID_AASC,
129
    CODEC_ID_INDEO2,
130
    CODEC_ID_FRAPS,
131
    CODEC_ID_TRUEMOTION2,
132
    CODEC_ID_BMP,
133
    CODEC_ID_CSCD,
134
    CODEC_ID_MMVIDEO,
135
    CODEC_ID_ZMBV,
136
    CODEC_ID_AVS,
137
    CODEC_ID_SMACKVIDEO,
138
    CODEC_ID_NUV,
139
    CODEC_ID_KMVC,
140
    CODEC_ID_FLASHSV,
141
    CODEC_ID_CAVS,
142
    CODEC_ID_JPEG2000,
143
    CODEC_ID_VMNC,
144
    CODEC_ID_VP5,
145
    CODEC_ID_VP6,
146
    CODEC_ID_VP6F,
147
    CODEC_ID_TARGA,
148
    CODEC_ID_DSICINVIDEO,
149
    CODEC_ID_TIERTEXSEQVIDEO,
150
    CODEC_ID_TIFF,
151
    CODEC_ID_GIF,
152
    CODEC_ID_FFH264,
153

    
154
    /* various pcm "codecs" */
155
    CODEC_ID_PCM_S16LE= 0x10000,
156
    CODEC_ID_PCM_S16BE,
157
    CODEC_ID_PCM_U16LE,
158
    CODEC_ID_PCM_U16BE,
159
    CODEC_ID_PCM_S8,
160
    CODEC_ID_PCM_U8,
161
    CODEC_ID_PCM_MULAW,
162
    CODEC_ID_PCM_ALAW,
163
    CODEC_ID_PCM_S32LE,
164
    CODEC_ID_PCM_S32BE,
165
    CODEC_ID_PCM_U32LE,
166
    CODEC_ID_PCM_U32BE,
167
    CODEC_ID_PCM_S24LE,
168
    CODEC_ID_PCM_S24BE,
169
    CODEC_ID_PCM_U24LE,
170
    CODEC_ID_PCM_U24BE,
171
    CODEC_ID_PCM_S24DAUD,
172

    
173
    /* various adpcm codecs */
174
    CODEC_ID_ADPCM_IMA_QT= 0x11000,
175
    CODEC_ID_ADPCM_IMA_WAV,
176
    CODEC_ID_ADPCM_IMA_DK3,
177
    CODEC_ID_ADPCM_IMA_DK4,
178
    CODEC_ID_ADPCM_IMA_WS,
179
    CODEC_ID_ADPCM_IMA_SMJPEG,
180
    CODEC_ID_ADPCM_MS,
181
    CODEC_ID_ADPCM_4XM,
182
    CODEC_ID_ADPCM_XA,
183
    CODEC_ID_ADPCM_ADX,
184
    CODEC_ID_ADPCM_EA,
185
    CODEC_ID_ADPCM_G726,
186
    CODEC_ID_ADPCM_CT,
187
    CODEC_ID_ADPCM_SWF,
188
    CODEC_ID_ADPCM_YAMAHA,
189
    CODEC_ID_ADPCM_SBPRO_4,
190
    CODEC_ID_ADPCM_SBPRO_3,
191
    CODEC_ID_ADPCM_SBPRO_2,
192

    
193
    /* AMR */
194
    CODEC_ID_AMR_NB= 0x12000,
195
    CODEC_ID_AMR_WB,
196

    
197
    /* RealAudio codecs*/
198
    CODEC_ID_RA_144= 0x13000,
199
    CODEC_ID_RA_288,
200

    
201
    /* various DPCM codecs */
202
    CODEC_ID_ROQ_DPCM= 0x14000,
203
    CODEC_ID_INTERPLAY_DPCM,
204
    CODEC_ID_XAN_DPCM,
205
    CODEC_ID_SOL_DPCM,
206

    
207
    CODEC_ID_MP2= 0x15000,
208
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
209
    CODEC_ID_AAC,
210
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
211
    CODEC_ID_MPEG4AAC,
212
#endif
213
    CODEC_ID_AC3,
214
    CODEC_ID_DTS,
215
    CODEC_ID_VORBIS,
216
    CODEC_ID_DVAUDIO,
217
    CODEC_ID_WMAV1,
218
    CODEC_ID_WMAV2,
219
    CODEC_ID_MACE3,
220
    CODEC_ID_MACE6,
221
    CODEC_ID_VMDAUDIO,
222
    CODEC_ID_SONIC,
223
    CODEC_ID_SONIC_LS,
224
    CODEC_ID_FLAC,
225
    CODEC_ID_MP3ADU,
226
    CODEC_ID_MP3ON4,
227
    CODEC_ID_SHORTEN,
228
    CODEC_ID_ALAC,
229
    CODEC_ID_WESTWOOD_SND1,
230
    CODEC_ID_GSM, /* As in Berlin toast format */
231
    CODEC_ID_QDM2,
232
    CODEC_ID_COOK,
233
    CODEC_ID_TRUESPEECH,
234
    CODEC_ID_TTA,
235
    CODEC_ID_SMACKAUDIO,
236
    CODEC_ID_QCELP,
237
    CODEC_ID_WAVPACK,
238
    CODEC_ID_DSICINAUDIO,
239
    CODEC_ID_IMC,
240
    CODEC_ID_MUSEPACK7,
241
    CODEC_ID_MLP,
242
    CODEC_ID_GSM_MS, /* As found in WAV */
243

    
244
    /* subtitle codecs */
245
    CODEC_ID_DVD_SUBTITLE= 0x17000,
246
    CODEC_ID_DVB_SUBTITLE,
247

    
248
    CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
249
                         stream (only used by libavformat) */
250
};
251

    
252
/* CODEC_ID_MP3LAME is absolete */
253
#define CODEC_ID_MP3LAME CODEC_ID_MP3
254

    
255
enum CodecType {
256
    CODEC_TYPE_UNKNOWN = -1,
257
    CODEC_TYPE_VIDEO,
258
    CODEC_TYPE_AUDIO,
259
    CODEC_TYPE_DATA,
260
    CODEC_TYPE_SUBTITLE,
261
};
262

    
263
/* currently unused, may be used if 24/32 bits samples ever supported */
264
/* all in native endian */
265
enum SampleFormat {
266
    SAMPLE_FMT_NONE = -1,
267
    SAMPLE_FMT_U8,              ///< unsigned 8 bits
268
    SAMPLE_FMT_S16,             ///< signed 16 bits
269
    SAMPLE_FMT_S24,             ///< signed 24 bits
270
    SAMPLE_FMT_S32,             ///< signed 32 bits
271
    SAMPLE_FMT_FLT,             ///< float
272
};
273

    
274
/* in bytes */
275
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
276

    
277
/**
278
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
279
 * this is mainly needed because some optimized bitstream readers read
280
 * 32 or 64 bit at once and could read over the end<br>
281
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
282
 * MPEG bitstreams could cause overread and segfault
283
 */
284
#define FF_INPUT_BUFFER_PADDING_SIZE 8
285

    
286
/**
287
 * minimum encoding buffer size.
288
 * used to avoid some checks during header writing
289
 */
290
#define FF_MIN_BUFFER_SIZE 16384
291

    
292
/* motion estimation type, EPZS by default */
293
enum Motion_Est_ID {
294
    ME_ZERO = 1,
295
    ME_FULL,
296
    ME_LOG,
297
    ME_PHODS,
298
    ME_EPZS,
299
    ME_X1,
300
    ME_HEX,
301
    ME_UMH,
302
    ME_ITER,
303
};
304

    
305
enum AVDiscard{
306
//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
307
    AVDISCARD_NONE   =-16, ///< discard nothing
308
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
309
    AVDISCARD_NONREF =  8, ///< discard all non reference
310
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
311
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
312
    AVDISCARD_ALL    = 48, ///< discard all
313
};
314

    
315
typedef struct RcOverride{
316
    int start_frame;
317
    int end_frame;
318
    int qscale; // if this is 0 then quality_factor will be used instead
319
    float quality_factor;
320
} RcOverride;
321

    
322
#define FF_MAX_B_FRAMES 16
323

    
324
/* encoding support
325
   these flags can be passed in AVCodecContext.flags before initing
326
   Note: not everything is supported yet.
327
*/
328

    
329
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale
330
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
331
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC
332
#define CODEC_FLAG_GMC    0x0020  ///< use GMC
333
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0>
334
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning
335
/* parent program guarantees that the input for b-frame containing streams is not written to
336
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
337
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
338
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode
339
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode
340
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
341
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale
342
#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
343
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding
344
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead
345
                                            of only at frame boundaries */
346
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization
347
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
348
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
349
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan
350
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization
351
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe
352
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct)
353
/* Fx : Flag for h263+ extra options */
354
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
355
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
356
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector
357
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
358
#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
359
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
360
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
361
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
362
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
363
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
364
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
365
#define CODEC_FLAG_CLOSED_GOP     ((int)0x80000000)
366
#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
367
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
368
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< skip bitstream encoding
369
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< place global headers at every keyframe instead of in extradata
370
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow b-frames to be used as references
371
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for b-frames
372
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
373
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
374
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
375
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
376
#define CODEC_FLAG2_BRDO          0x00000400 ///< b-frame rate-distortion optimization
377
#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< use MPEG-2 intra VLC table
378
#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
379
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format
380
#define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skiping
381

    
382
/* Unsupported options :
383
 *              Syntax Arithmetic coding (SAC)
384
 *              Reference Picture Selection
385
 *              Independant Segment Decoding */
386
/* /Fx */
387
/* codec capabilities */
388

    
389
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
390
/**
391
 * Codec uses get_buffer() for allocating buffers.
392
 * direct rendering method 1
393
 */
394
#define CODEC_CAP_DR1             0x0002
395
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
396
   used */
397
#define CODEC_CAP_PARSE_ONLY      0x0004
398
#define CODEC_CAP_TRUNCATED       0x0008
399
/* codec can export data for HW decoding (XvMC) */
400
#define CODEC_CAP_HWACCEL         0x0010
401
/**
402
 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
403
 * if this is not set, the codec is guaranteed to never be feeded with NULL data
404
 */
405
#define CODEC_CAP_DELAY           0x0020
406
/**
407
 * Codec can be fed a final frame with a smaller size.
408
 * This can be used to prevent truncation of the last audio samples.
409
 */
410
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
411

    
412
//the following defines may change, don't expect compatibility if you use them
413
#define MB_TYPE_INTRA4x4   0x0001
414
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
415
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
416
#define MB_TYPE_16x16      0x0008
417
#define MB_TYPE_16x8       0x0010
418
#define MB_TYPE_8x16       0x0020
419
#define MB_TYPE_8x8        0x0040
420
#define MB_TYPE_INTERLACED 0x0080
421
#define MB_TYPE_DIRECT2     0x0100 //FIXME
422
#define MB_TYPE_ACPRED     0x0200
423
#define MB_TYPE_GMC        0x0400
424
#define MB_TYPE_SKIP       0x0800
425
#define MB_TYPE_P0L0       0x1000
426
#define MB_TYPE_P1L0       0x2000
427
#define MB_TYPE_P0L1       0x4000
428
#define MB_TYPE_P1L1       0x8000
429
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
430
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
431
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
432
#define MB_TYPE_QUANT      0x00010000
433
#define MB_TYPE_CBP        0x00020000
434
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
435

    
436
/**
437
 * Pan Scan area.
438
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
439
 */
440
typedef struct AVPanScan{
441
    /**
442
     * id.
443
     * - encoding: set by user.
444
     * - decoding: set by lavc
445
     */
446
    int id;
447

    
448
    /**
449
     * width and height in 1/16 pel
450
     * - encoding: set by user.
451
     * - decoding: set by lavc
452
     */
453
    int width;
454
    int height;
455

    
456
    /**
457
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
458
     * - encoding: set by user.
459
     * - decoding: set by lavc
460
     */
461
    int16_t position[3][2];
462
}AVPanScan;
463

    
464
#define FF_COMMON_FRAME \
465
    /**\
466
     * pointer to the picture planes.\
467
     * this might be different from the first allocated byte\
468
     * - encoding: \
469
     * - decoding: \
470
     */\
471
    uint8_t *data[4];\
472
    int linesize[4];\
473
    /**\
474
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
475
     * this isn't used by lavc unless the default get/release_buffer() is used\
476
     * - encoding: \
477
     * - decoding: \
478
     */\
479
    uint8_t *base[4];\
480
    /**\
481
     * 1 -> keyframe, 0-> not\
482
     * - encoding: set by lavc\
483
     * - decoding: set by lavc\
484
     */\
485
    int key_frame;\
486
\
487
    /**\
488
     * picture type of the frame, see ?_TYPE below.\
489
     * - encoding: set by lavc for coded_picture (and set by user for input)\
490
     * - decoding: set by lavc\
491
     */\
492
    int pict_type;\
493
\
494
    /**\
495
     * presentation timestamp in time_base units (time when frame should be shown to user)\
496
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
497
     * - encoding: MUST be set by user\
498
     * - decoding: set by lavc\
499
     */\
500
    int64_t pts;\
501
\
502
    /**\
503
     * picture number in bitstream order.\
504
     * - encoding: set by\
505
     * - decoding: set by lavc\
506
     */\
507
    int coded_picture_number;\
508
    /**\
509
     * picture number in display order.\
510
     * - encoding: set by\
511
     * - decoding: set by lavc\
512
     */\
513
    int display_picture_number;\
514
\
515
    /**\
516
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
517
     * - encoding: set by lavc for coded_picture (and set by user for input)\
518
     * - decoding: set by lavc\
519
     */\
520
    int quality; \
521
\
522
    /**\
523
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
524
     * set to INT_MAX if the buffer has not been used yet \
525
     * - encoding: unused\
526
     * - decoding: MUST be set by get_buffer()\
527
     */\
528
    int age;\
529
\
530
    /**\
531
     * is this picture used as reference\
532
     * - encoding: unused\
533
     * - decoding: set by lavc (before get_buffer() call))\
534
     */\
535
    int reference;\
536
\
537
    /**\
538
     * QP table\
539
     * - encoding: unused\
540
     * - decoding: set by lavc\
541
     */\
542
    int8_t *qscale_table;\
543
    /**\
544
     * QP store stride\
545
     * - encoding: unused\
546
     * - decoding: set by lavc\
547
     */\
548
    int qstride;\
549
\
550
    /**\
551
     * mbskip_table[mb]>=1 if MB didnt change\
552
     * stride= mb_width = (width+15)>>4\
553
     * - encoding: unused\
554
     * - decoding: set by lavc\
555
     */\
556
    uint8_t *mbskip_table;\
557
\
558
    /**\
559
     * Motion vector table.\
560
     * @code\
561
     * example:\
562
     * int mv_sample_log2= 4 - motion_subsample_log2;\
563
     * int mb_width= (width+15)>>4;\
564
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
565
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
566
     * @endcode\
567
     * - encoding: set by user\
568
     * - decoding: set by lavc\
569
     */\
570
    int16_t (*motion_val[2])[2];\
571
\
572
    /**\
573
     * Macroblock type table\
574
     * mb_type_base + mb_width + 2\
575
     * - encoding: set by user\
576
     * - decoding: set by lavc\
577
     */\
578
    uint32_t *mb_type;\
579
\
580
    /**\
581
     * log2 of the size of the block which a single vector in motion_val represents: \
582
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
583
     * - encoding: unused\
584
     * - decoding: set by lavc\
585
     */\
586
    uint8_t motion_subsample_log2;\
587
\
588
    /**\
589
     * for some private data of the user\
590
     * - encoding: unused\
591
     * - decoding: set by user\
592
     */\
593
    void *opaque;\
594
\
595
    /**\
596
     * error\
597
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
598
     * - decoding: unused\
599
     */\
600
    uint64_t error[4];\
601
\
602
    /**\
603
     * type of the buffer (to keep track of who has to dealloc data[*])\
604
     * - encoding: set by the one who allocs it\
605
     * - decoding: set by the one who allocs it\
606
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
607
     */\
608
    int type;\
609
    \
610
    /**\
611
     * when decoding, this signal how much the picture must be delayed.\
612
     * extra_delay = repeat_pict / (2*fps)\
613
     * - encoding: unused\
614
     * - decoding: set by lavc\
615
     */\
616
    int repeat_pict;\
617
    \
618
    /**\
619
     * \
620
     */\
621
    int qscale_type;\
622
    \
623
    /**\
624
     * The content of the picture is interlaced.\
625
     * - encoding: set by user\
626
     * - decoding: set by lavc (default 0)\
627
     */\
628
    int interlaced_frame;\
629
    \
630
    /**\
631
     * if the content is interlaced, is top field displayed first.\
632
     * - encoding: set by user\
633
     * - decoding: set by lavc\
634
     */\
635
    int top_field_first;\
636
    \
637
    /**\
638
     * Pan scan.\
639
     * - encoding: set by user\
640
     * - decoding: set by lavc\
641
     */\
642
    AVPanScan *pan_scan;\
643
    \
644
    /**\
645
     * tell user application that palette has changed from previous frame.\
646
     * - encoding: ??? (no palette-enabled encoder yet)\
647
     * - decoding: set by lavc (default 0)\
648
     */\
649
    int palette_has_changed;\
650
    \
651
    /**\
652
     * Codec suggestion on buffer type if != 0\
653
     * - encoding: unused\
654
     * - decoding: set by lavc (before get_buffer() call))\
655
     */\
656
    int buffer_hints;\
657
\
658
    /**\
659
     * DCT coeffitients\
660
     * - encoding: unused\
661
     * - decoding: set by lavc\
662
     */\
663
    short *dct_coeff;\
664
\
665
    /**\
666
     * Motion referece frame index\
667
     * - encoding: set by user\
668
     * - decoding: set by lavc\
669
     */\
670
    int8_t *ref_index[2];
671

    
672
#define FF_QSCALE_TYPE_MPEG1 0
673
#define FF_QSCALE_TYPE_MPEG2 1
674
#define FF_QSCALE_TYPE_H264  2
675

    
676
#define FF_BUFFER_TYPE_INTERNAL 1
677
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
678
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
679
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
680

    
681

    
682
#define FF_I_TYPE 1 // Intra
683
#define FF_P_TYPE 2 // Predicted
684
#define FF_B_TYPE 3 // Bi-dir predicted
685
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
686
#define FF_SI_TYPE 5
687
#define FF_SP_TYPE 6
688

    
689
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
690
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
691
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
692
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
693

    
694
/**
695
 * Audio Video Frame.
696
 */
697
typedef struct AVFrame {
698
    FF_COMMON_FRAME
699
} AVFrame;
700

    
701
#define DEFAULT_FRAME_RATE_BASE 1001000
702

    
703
/**
704
 * main external api structure.
705
 */
706
typedef struct AVCodecContext {
707
    /**
708
     * Info on struct for av_log
709
     * - set by avcodec_alloc_context
710
     */
711
    AVClass *av_class;
712
    /**
713
     * the average bitrate.
714
     * - encoding: set by user. unused for constant quantizer encoding
715
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
716
     */
717
    int bit_rate;
718

    
719
    /**
720
     * number of bits the bitstream is allowed to diverge from the reference.
721
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
722
     * - encoding: set by user. unused for constant quantizer encoding
723
     * - decoding: unused
724
     */
725
    int bit_rate_tolerance;
726

    
727
    /**
728
     * CODEC_FLAG_*.
729
     * - encoding: set by user.
730
     * - decoding: set by user.
731
     */
732
    int flags;
733

    
734
    /**
735
     * some codecs needs additionnal format info. It is stored here
736
     * - encoding: set by user.
737
     * - decoding: set by lavc. (FIXME is this ok?)
738
     */
739
    int sub_id;
740

    
741
    /**
742
     * motion estimation algorithm used for video coding.
743
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
744
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
745
     * - encoding: MUST be set by user.
746
     * - decoding: unused
747
     */
748
    int me_method;
749

    
750
    /**
751
     * some codecs need / can use extra-data like huffman tables.
752
     * mjpeg: huffman tables
753
     * rv10: additional flags
754
     * mpeg4: global headers (they can be in the bitstream or here)
755
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
756
     * then extradata_size to avoid prolems if its read with the bitstream reader
757
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
758
     * - encoding: set/allocated/freed by lavc.
759
     * - decoding: set/allocated/freed by user.
760
     */
761
    uint8_t *extradata;
762
    int extradata_size;
763

    
764
    /**
765
     * this is the fundamental unit of time (in seconds) in terms
766
     * of which frame timestamps are represented. for fixed-fps content,
767
     * timebase should be 1/framerate and timestamp increments should be
768
     * identically 1.
769
     * - encoding: MUST be set by user
770
     * - decoding: set by lavc.
771
     */
772
    AVRational time_base;
773

    
774
    /* video only */
775
    /**
776
     * picture width / height.
777
     * - encoding: MUST be set by user.
778
     * - decoding: set by lavc.
779
     * Note, for compatibility its possible to set this instead of
780
     * coded_width/height before decoding
781
     */
782
    int width, height;
783

    
784
#define FF_ASPECT_EXTENDED 15
785

    
786
    /**
787
     * the number of pictures in a group of pitures, or 0 for intra_only.
788
     * - encoding: set by user.
789
     * - decoding: unused
790
     */
791
    int gop_size;
792

    
793
    /**
794
     * pixel format, see PIX_FMT_xxx.
795
     * - encoding: set by user.
796
     * - decoding: set by lavc.
797
     */
798
    enum PixelFormat pix_fmt;
799

    
800
    /**
801
     * Frame rate emulation. If not zero lower layer (i.e. format handler)
802
     * has to read frames at native frame rate.
803
     * - encoding: set by user.
804
     * - decoding: unused.
805
     */
806
    int rate_emu;
807

    
808
    /**
809
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
810
     * decoder to draw an horizontal band. It improve cache usage. Not
811
     * all codecs can do that. You must check the codec capabilities
812
     * before
813
     * - encoding: unused
814
     * - decoding: set by user.
815
     * @param height the height of the slice
816
     * @param y the y position of the slice
817
     * @param type 1->top field, 2->bottom field, 3->frame
818
     * @param offset offset into the AVFrame.data from which the slice should be read
819
     */
820
    void (*draw_horiz_band)(struct AVCodecContext *s,
821
                            const AVFrame *src, int offset[4],
822
                            int y, int type, int height);
823

    
824
    /* audio only */
825
    int sample_rate; ///< samples per sec
826
    int channels;
827

    
828
    /**
829
     * audio sample format.
830
     * - encoding: set by user.
831
     * - decoding: set by lavc.
832
     */
833
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused
834

    
835
    /* the following data should not be initialized */
836
    /**
837
     * samples per packet. initialized when calling 'init'
838
     */
839
    int frame_size;
840
    int frame_number;   ///< audio or video frame number
841
    int real_pict_num;  ///< returns the real picture number of previous encoded frame
842

    
843
    /**
844
     * number of frames the decoded output will be delayed relative to
845
     * the encoded input.
846
     * - encoding: set by lavc.
847
     * - decoding: unused
848
     */
849
    int delay;
850

    
851
    /* - encoding parameters */
852
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
853
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
854

    
855
    /**
856
     * minimum quantizer.
857
     * - encoding: set by user.
858
     * - decoding: unused
859
     */
860
    int qmin;
861

    
862
    /**
863
     * maximum quantizer.
864
     * - encoding: set by user.
865
     * - decoding: unused
866
     */
867
    int qmax;
868

    
869
    /**
870
     * maximum quantizer difference between frames.
871
     * - encoding: set by user.
872
     * - decoding: unused
873
     */
874
    int max_qdiff;
875

    
876
    /**
877
     * maximum number of b frames between non b frames.
878
     * note: the output will be delayed by max_b_frames+1 relative to the input
879
     * - encoding: set by user.
880
     * - decoding: unused
881
     */
882
    int max_b_frames;
883

    
884
    /**
885
     * qscale factor between ip and b frames.
886
     * - encoding: set by user.
887
     * - decoding: unused
888
     */
889
    float b_quant_factor;
890

    
891
    /** obsolete FIXME remove */
892
    int rc_strategy;
893
#define FF_RC_STRATEGY_XVID 1
894

    
895
    int b_frame_strategy;
896

    
897
    /**
898
     * hurry up amount.
899
     * - encoding: unused
900
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
901
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
902
     */
903
    int hurry_up;
904

    
905
    struct AVCodec *codec;
906

    
907
    void *priv_data;
908

    
909
    /* unused, FIXME remove*/
910
    int rtp_mode;
911

    
912
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
913
                            /* do it's best to deliver a chunk with size    */
914
                            /* below rtp_payload_size, the chunk will start */
915
                            /* with a start code on some codecs like H.263  */
916
                            /* This doesn't take account of any particular  */
917
                            /* headers inside the transmited RTP payload    */
918

    
919

    
920
    /* The RTP callback: This function is called   */
921
    /* every time the encoder has a packet to send */
922
    /* Depends on the encoder if the data starts   */
923
    /* with a Start Code (it should) H.263 does.   */
924
    /* mb_nb contains the number of macroblocks    */
925
    /* encoded in the RTP payload                  */
926
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
927

    
928
    /* statistics, used for 2-pass encoding */
929
    int mv_bits;
930
    int header_bits;
931
    int i_tex_bits;
932
    int p_tex_bits;
933
    int i_count;
934
    int p_count;
935
    int skip_count;
936
    int misc_bits;
937

    
938
    /**
939
     * number of bits used for the previously encoded frame.
940
     * - encoding: set by lavc
941
     * - decoding: unused
942
     */
943
    int frame_bits;
944

    
945
    /**
946
     * private data of the user, can be used to carry app specific stuff.
947
     * - encoding: set by user
948
     * - decoding: set by user
949
     */
950
    void *opaque;
951

    
952
    char codec_name[32];
953
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
954
    enum CodecID codec_id; /* see CODEC_ID_xxx */
955

    
956
    /**
957
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
958
     * this is used to workaround some encoder bugs
959
     * - encoding: set by user, if not then the default based on codec_id will be used
960
     * - decoding: set by user, will be converted to upper case by lavc during init
961
     */
962
    unsigned int codec_tag;
963

    
964
    /**
965
     * workaround bugs in encoders which sometimes cannot be detected automatically.
966
     * - encoding: set by user
967
     * - decoding: set by user
968
     */
969
    int workaround_bugs;
970
#define FF_BUG_AUTODETECT       1  ///< autodetection
971
#define FF_BUG_OLD_MSMPEG4      2
972
#define FF_BUG_XVID_ILACE       4
973
#define FF_BUG_UMP4             8
974
#define FF_BUG_NO_PADDING       16
975
#define FF_BUG_AMV              32
976
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
977
#define FF_BUG_QPEL_CHROMA      64
978
#define FF_BUG_STD_QPEL         128
979
#define FF_BUG_QPEL_CHROMA2     256
980
#define FF_BUG_DIRECT_BLOCKSIZE 512
981
#define FF_BUG_EDGE             1024
982
#define FF_BUG_HPEL_CHROMA      2048
983
#define FF_BUG_DC_CLIP          4096
984
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
985
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
986

    
987
    /**
988
     * luma single coeff elimination threshold.
989
     * - encoding: set by user
990
     * - decoding: unused
991
     */
992
    int luma_elim_threshold;
993

    
994
    /**
995
     * chroma single coeff elimination threshold.
996
     * - encoding: set by user
997
     * - decoding: unused
998
     */
999
    int chroma_elim_threshold;
1000

    
1001
    /**
1002
     * strictly follow the std (MPEG4, ...).
1003
     * - encoding: set by user
1004
     * - decoding: unused
1005
     */
1006
    int strict_std_compliance;
1007
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
1008
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
1009
#define FF_COMPLIANCE_NORMAL        0
1010
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
1011
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1012

    
1013
    /**
1014
     * qscale offset between ip and b frames.
1015
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1016
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1017
     * - encoding: set by user.
1018
     * - decoding: unused
1019
     */
1020
    float b_quant_offset;
1021

    
1022
    /**
1023
     * error resilience higher values will detect more errors but may missdetect
1024
     * some more or less valid parts as errors.
1025
     * - encoding: unused
1026
     * - decoding: set by user
1027
     */
1028
    int error_resilience;
1029
#define FF_ER_CAREFUL         1
1030
#define FF_ER_COMPLIANT       2
1031
#define FF_ER_AGGRESSIVE      3
1032
#define FF_ER_VERY_AGGRESSIVE 4
1033

    
1034
    /**
1035
     * called at the beginning of each frame to get a buffer for it.
1036
     * if pic.reference is set then the frame will be read later by lavc
1037
     * avcodec_align_dimensions() should be used to find the required width and
1038
     * height, as they normally need to be rounded up to the next multiple of 16
1039
     * - encoding: unused
1040
     * - decoding: set by lavc, user can override
1041
     */
1042
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1043

    
1044
    /**
1045
     * called to release buffers which where allocated with get_buffer.
1046
     * a released buffer can be reused in get_buffer()
1047
     * pic.data[*] must be set to NULL
1048
     * - encoding: unused
1049
     * - decoding: set by lavc, user can override
1050
     */
1051
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1052

    
1053
    /**
1054
     * if 1 the stream has a 1 frame delay during decoding.
1055
     * - encoding: set by lavc
1056
     * - decoding: set by lavc
1057
     */
1058
    int has_b_frames;
1059

    
1060
    /**
1061
     * number of bytes per packet if constant and known or 0
1062
     * used by some WAV based audio codecs
1063
     */
1064
    int block_align;
1065

    
1066
    int parse_only; /* - decoding only: if true, only parsing is done
1067
                       (function avcodec_parse_frame()). The frame
1068
                       data is returned. Only MPEG codecs support this now. */
1069

    
1070
    /**
1071
     * 0-> h263 quant 1-> mpeg quant.
1072
     * - encoding: set by user.
1073
     * - decoding: unused
1074
     */
1075
    int mpeg_quant;
1076

    
1077
    /**
1078
     * pass1 encoding statistics output buffer.
1079
     * - encoding: set by lavc
1080
     * - decoding: unused
1081
     */
1082
    char *stats_out;
1083

    
1084
    /**
1085
     * pass2 encoding statistics input buffer.
1086
     * concatenated stuff from stats_out of pass1 should be placed here
1087
     * - encoding: allocated/set/freed by user
1088
     * - decoding: unused
1089
     */
1090
    char *stats_in;
1091

    
1092
    /**
1093
     * ratecontrol qmin qmax limiting method.
1094
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1095
     * - encoding: set by user.
1096
     * - decoding: unused
1097
     */
1098
    float rc_qsquish;
1099

    
1100
    float rc_qmod_amp;
1101
    int rc_qmod_freq;
1102

    
1103
    /**
1104
     * ratecontrol override, see RcOverride.
1105
     * - encoding: allocated/set/freed by user.
1106
     * - decoding: unused
1107
     */
1108
    RcOverride *rc_override;
1109
    int rc_override_count;
1110

    
1111
    /**
1112
     * rate control equation.
1113
     * - encoding: set by user
1114
     * - decoding: unused
1115
     */
1116
    char *rc_eq;
1117

    
1118
    /**
1119
     * maximum bitrate.
1120
     * - encoding: set by user.
1121
     * - decoding: unused
1122
     */
1123
    int rc_max_rate;
1124

    
1125
    /**
1126
     * minimum bitrate.
1127
     * - encoding: set by user.
1128
     * - decoding: unused
1129
     */
1130
    int rc_min_rate;
1131

    
1132
    /**
1133
     * decoder bitstream buffer size.
1134
     * - encoding: set by user.
1135
     * - decoding: unused
1136
     */
1137
    int rc_buffer_size;
1138
    float rc_buffer_aggressivity;
1139

    
1140
    /**
1141
     * qscale factor between p and i frames.
1142
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1143
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1144
     * - encoding: set by user.
1145
     * - decoding: unused
1146
     */
1147
    float i_quant_factor;
1148

    
1149
    /**
1150
     * qscale offset between p and i frames.
1151
     * - encoding: set by user.
1152
     * - decoding: unused
1153
     */
1154
    float i_quant_offset;
1155

    
1156
    /**
1157
     * initial complexity for pass1 ratecontrol.
1158
     * - encoding: set by user.
1159
     * - decoding: unused
1160
     */
1161
    float rc_initial_cplx;
1162

    
1163
    /**
1164
     * dct algorithm, see FF_DCT_* below.
1165
     * - encoding: set by user
1166
     * - decoding: unused
1167
     */
1168
    int dct_algo;
1169
#define FF_DCT_AUTO    0
1170
#define FF_DCT_FASTINT 1
1171
#define FF_DCT_INT     2
1172
#define FF_DCT_MMX     3
1173
#define FF_DCT_MLIB    4
1174
#define FF_DCT_ALTIVEC 5
1175
#define FF_DCT_FAAN    6
1176

    
1177
    /**
1178
     * luminance masking (0-> disabled).
1179
     * - encoding: set by user
1180
     * - decoding: unused
1181
     */
1182
    float lumi_masking;
1183

    
1184
    /**
1185
     * temporary complexity masking (0-> disabled).
1186
     * - encoding: set by user
1187
     * - decoding: unused
1188
     */
1189
    float temporal_cplx_masking;
1190

    
1191
    /**
1192
     * spatial complexity masking (0-> disabled).
1193
     * - encoding: set by user
1194
     * - decoding: unused
1195
     */
1196
    float spatial_cplx_masking;
1197

    
1198
    /**
1199
     * p block masking (0-> disabled).
1200
     * - encoding: set by user
1201
     * - decoding: unused
1202
     */
1203
    float p_masking;
1204

    
1205
    /**
1206
     * darkness masking (0-> disabled).
1207
     * - encoding: set by user
1208
     * - decoding: unused
1209
     */
1210
    float dark_masking;
1211

    
1212

    
1213
    /* for binary compatibility */
1214
    int unused;
1215

    
1216
    /**
1217
     * idct algorithm, see FF_IDCT_* below.
1218
     * - encoding: set by user
1219
     * - decoding: set by user
1220
     */
1221
    int idct_algo;
1222
#define FF_IDCT_AUTO         0
1223
#define FF_IDCT_INT          1
1224
#define FF_IDCT_SIMPLE       2
1225
#define FF_IDCT_SIMPLEMMX    3
1226
#define FF_IDCT_LIBMPEG2MMX  4
1227
#define FF_IDCT_PS2          5
1228
#define FF_IDCT_MLIB         6
1229
#define FF_IDCT_ARM          7
1230
#define FF_IDCT_ALTIVEC      8
1231
#define FF_IDCT_SH4          9
1232
#define FF_IDCT_SIMPLEARM    10
1233
#define FF_IDCT_H264         11
1234
#define FF_IDCT_VP3          12
1235
#define FF_IDCT_IPP          13
1236
#define FF_IDCT_XVIDMMX      14
1237
#define FF_IDCT_CAVS         15
1238
#define FF_IDCT_SIMPLEARMV5TE 16
1239
#define FF_IDCT_SIMPLEARMV6  17
1240

    
1241
    /**
1242
     * slice count.
1243
     * - encoding: set by lavc
1244
     * - decoding: set by user (or 0)
1245
     */
1246
    int slice_count;
1247
    /**
1248
     * slice offsets in the frame in bytes.
1249
     * - encoding: set/allocated by lavc
1250
     * - decoding: set/allocated by user (or NULL)
1251
     */
1252
    int *slice_offset;
1253

    
1254
    /**
1255
     * error concealment flags.
1256
     * - encoding: unused
1257
     * - decoding: set by user
1258
     */
1259
    int error_concealment;
1260
#define FF_EC_GUESS_MVS   1
1261
#define FF_EC_DEBLOCK     2
1262

    
1263
    /**
1264
     * dsp_mask could be add used to disable unwanted CPU features
1265
     * CPU features (i.e. MMX, SSE. ...)
1266
     *
1267
     * with FORCE flag you may instead enable given CPU features
1268
     * (Dangerous: usable in case of misdetection, improper usage however will
1269
     * result into program crash)
1270
     */
1271
    unsigned dsp_mask;
1272
#define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1273
    /* lower 16 bits - CPU features */
1274
#ifdef HAVE_MMX
1275
#define FF_MM_MMX      0x0001 /* standard MMX */
1276
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1277
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1278
#define FF_MM_SSE      0x0008 /* SSE functions */
1279
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1280
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1281
#endif /* HAVE_MMX */
1282
#ifdef HAVE_IWMMXT
1283
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1284
#endif /* HAVE_IWMMXT */
1285

    
1286
    /**
1287
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1288
     * - encoding: set by lavc
1289
     * - decoding: set by user
1290
     */
1291
     int bits_per_sample;
1292

    
1293
    /**
1294
     * prediction method (needed for huffyuv).
1295
     * - encoding: set by user
1296
     * - decoding: unused
1297
     */
1298
     int prediction_method;
1299
#define FF_PRED_LEFT   0
1300
#define FF_PRED_PLANE  1
1301
#define FF_PRED_MEDIAN 2
1302

    
1303
    /**
1304
     * sample aspect ratio (0 if unknown).
1305
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1306
     * - encoding: set by user.
1307
     * - decoding: set by lavc.
1308
     */
1309
    AVRational sample_aspect_ratio;
1310

    
1311
    /**
1312
     * the picture in the bitstream.
1313
     * - encoding: set by lavc
1314
     * - decoding: set by lavc
1315
     */
1316
    AVFrame *coded_frame;
1317

    
1318
    /**
1319
     * debug.
1320
     * - encoding: set by user.
1321
     * - decoding: set by user.
1322
     */
1323
    int debug;
1324
#define FF_DEBUG_PICT_INFO 1
1325
#define FF_DEBUG_RC        2
1326
#define FF_DEBUG_BITSTREAM 4
1327
#define FF_DEBUG_MB_TYPE   8
1328
#define FF_DEBUG_QP        16
1329
#define FF_DEBUG_MV        32
1330
#define FF_DEBUG_DCT_COEFF 0x00000040
1331
#define FF_DEBUG_SKIP      0x00000080
1332
#define FF_DEBUG_STARTCODE 0x00000100
1333
#define FF_DEBUG_PTS       0x00000200
1334
#define FF_DEBUG_ER        0x00000400
1335
#define FF_DEBUG_MMCO      0x00000800
1336
#define FF_DEBUG_BUGS      0x00001000
1337
#define FF_DEBUG_VIS_QP    0x00002000
1338
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1339

    
1340
    /**
1341
     * debug.
1342
     * - encoding: set by user.
1343
     * - decoding: set by user.
1344
     */
1345
    int debug_mv;
1346
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1347
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1348
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1349

    
1350
    /**
1351
     * error.
1352
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1353
     * - decoding: unused
1354
     */
1355
    uint64_t error[4];
1356

    
1357
    /**
1358
     * minimum MB quantizer.
1359
     * - encoding: unused
1360
     * - decoding: unused
1361
     */
1362
    int mb_qmin;
1363

    
1364
    /**
1365
     * maximum MB quantizer.
1366
     * - encoding: unused
1367
     * - decoding: unused
1368
     */
1369
    int mb_qmax;
1370

    
1371
    /**
1372
     * motion estimation compare function.
1373
     * - encoding: set by user.
1374
     * - decoding: unused
1375
     */
1376
    int me_cmp;
1377
    /**
1378
     * subpixel motion estimation compare function.
1379
     * - encoding: set by user.
1380
     * - decoding: unused
1381
     */
1382
    int me_sub_cmp;
1383
    /**
1384
     * macroblock compare function (not supported yet).
1385
     * - encoding: set by user.
1386
     * - decoding: unused
1387
     */
1388
    int mb_cmp;
1389
    /**
1390
     * interlaced dct compare function
1391
     * - encoding: set by user.
1392
     * - decoding: unused
1393
     */
1394
    int ildct_cmp;
1395
#define FF_CMP_SAD  0
1396
#define FF_CMP_SSE  1
1397
#define FF_CMP_SATD 2
1398
#define FF_CMP_DCT  3
1399
#define FF_CMP_PSNR 4
1400
#define FF_CMP_BIT  5
1401
#define FF_CMP_RD   6
1402
#define FF_CMP_ZERO 7
1403
#define FF_CMP_VSAD 8
1404
#define FF_CMP_VSSE 9
1405
#define FF_CMP_NSSE 10
1406
#define FF_CMP_W53  11
1407
#define FF_CMP_W97  12
1408
#define FF_CMP_DCTMAX 13
1409
#define FF_CMP_DCT264 14
1410
#define FF_CMP_CHROMA 256
1411

    
1412
    /**
1413
     * ME diamond size & shape.
1414
     * - encoding: set by user.
1415
     * - decoding: unused
1416
     */
1417
    int dia_size;
1418

    
1419
    /**
1420
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1421
     * - encoding: set by user.
1422
     * - decoding: unused
1423
     */
1424
    int last_predictor_count;
1425

    
1426
    /**
1427
     * pre pass for motion estimation.
1428
     * - encoding: set by user.
1429
     * - decoding: unused
1430
     */
1431
    int pre_me;
1432

    
1433
    /**
1434
     * motion estimation pre pass compare function.
1435
     * - encoding: set by user.
1436
     * - decoding: unused
1437
     */
1438
    int me_pre_cmp;
1439

    
1440
    /**
1441
     * ME pre pass diamond size & shape.
1442
     * - encoding: set by user.
1443
     * - decoding: unused
1444
     */
1445
    int pre_dia_size;
1446

    
1447
    /**
1448
     * subpel ME quality.
1449
     * - encoding: set by user.
1450
     * - decoding: unused
1451
     */
1452
    int me_subpel_quality;
1453

    
1454
    /**
1455
     * callback to negotiate the pixelFormat.
1456
     * @param fmt is the list of formats which are supported by the codec,
1457
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1458
     * the first is allways the native one
1459
     * @return the choosen format
1460
     * - encoding: unused
1461
     * - decoding: set by user, if not set then the native format will always be choosen
1462
     */
1463
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1464

    
1465
    /**
1466
     * DTG active format information (additionnal aspect ratio
1467
     * information only used in DVB MPEG2 transport streams). 0 if
1468
     * not set.
1469
     *
1470
     * - encoding: unused.
1471
     * - decoding: set by decoder
1472
     */
1473
    int dtg_active_format;
1474
#define FF_DTG_AFD_SAME         8
1475
#define FF_DTG_AFD_4_3          9
1476
#define FF_DTG_AFD_16_9         10
1477
#define FF_DTG_AFD_14_9         11
1478
#define FF_DTG_AFD_4_3_SP_14_9  13
1479
#define FF_DTG_AFD_16_9_SP_14_9 14
1480
#define FF_DTG_AFD_SP_4_3       15
1481

    
1482
    /**
1483
     * Maximum motion estimation search range in subpel units.
1484
     * if 0 then no limit
1485
     *
1486
     * - encoding: set by user.
1487
     * - decoding: unused.
1488
     */
1489
    int me_range;
1490

    
1491
    /**
1492
     * intra quantizer bias.
1493
     * - encoding: set by user.
1494
     * - decoding: unused
1495
     */
1496
    int intra_quant_bias;
1497
#define FF_DEFAULT_QUANT_BIAS 999999
1498

    
1499
    /**
1500
     * inter quantizer bias.
1501
     * - encoding: set by user.
1502
     * - decoding: unused
1503
     */
1504
    int inter_quant_bias;
1505

    
1506
    /**
1507
     * color table ID.
1508
     * - encoding: unused.
1509
     * - decoding: which clrtable should be used for 8bit RGB images
1510
     *             table have to be stored somewhere FIXME
1511
     */
1512
    int color_table_id;
1513

    
1514
    /**
1515
     * internal_buffer count.
1516
     * Don't touch, used by lavc default_get_buffer()
1517
     */
1518
    int internal_buffer_count;
1519

    
1520
    /**
1521
     * internal_buffers.
1522
     * Don't touch, used by lavc default_get_buffer()
1523
     */
1524
    void *internal_buffer;
1525

    
1526
#define FF_LAMBDA_SHIFT 7
1527
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1528
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1529
#define FF_LAMBDA_MAX (256*128-1)
1530

    
1531
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1532
    /**
1533
     * global quality for codecs which cannot change it per frame.
1534
     * this should be proportional to MPEG1/2/4 qscale.
1535
     * - encoding: set by user.
1536
     * - decoding: unused
1537
     */
1538
    int global_quality;
1539

    
1540
#define FF_CODER_TYPE_VLC   0
1541
#define FF_CODER_TYPE_AC    1
1542
    /**
1543
     * coder type
1544
     * - encoding: set by user.
1545
     * - decoding: unused
1546
     */
1547
    int coder_type;
1548

    
1549
    /**
1550
     * context model
1551
     * - encoding: set by user.
1552
     * - decoding: unused
1553
     */
1554
    int context_model;
1555
#if 0
1556
    /**
1557
     *
1558
     * - encoding: unused
1559
     * - decoding: set by user.
1560
     */
1561
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1562
#endif
1563

    
1564
    /**
1565
     * slice flags
1566
     * - encoding: unused
1567
     * - decoding: set by user.
1568
     */
1569
    int slice_flags;
1570
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1571
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1572
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1573

    
1574
    /**
1575
     * XVideo Motion Acceleration
1576
     * - encoding: forbidden
1577
     * - decoding: set by decoder
1578
     */
1579
    int xvmc_acceleration;
1580

    
1581
    /**
1582
     * macroblock decision mode
1583
     * - encoding: set by user.
1584
     * - decoding: unused
1585
     */
1586
    int mb_decision;
1587
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1588
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1589
#define FF_MB_DECISION_RD     2        ///< rate distoration
1590

    
1591
    /**
1592
     * custom intra quantization matrix
1593
     * - encoding: set by user, can be NULL
1594
     * - decoding: set by lavc
1595
     */
1596
    uint16_t *intra_matrix;
1597

    
1598
    /**
1599
     * custom inter quantization matrix
1600
     * - encoding: set by user, can be NULL
1601
     * - decoding: set by lavc
1602
     */
1603
    uint16_t *inter_matrix;
1604

    
1605
    /**
1606
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1607
     * this is used to workaround some encoder bugs
1608
     * - encoding: unused
1609
     * - decoding: set by user, will be converted to upper case by lavc during init
1610
     */
1611
    unsigned int stream_codec_tag;
1612

    
1613
    /**
1614
     * scene change detection threshold.
1615
     * 0 is default, larger means fewer detected scene changes
1616
     * - encoding: set by user.
1617
     * - decoding: unused
1618
     */
1619
    int scenechange_threshold;
1620

    
1621
    /**
1622
     * minimum lagrange multipler
1623
     * - encoding: set by user.
1624
     * - decoding: unused
1625
     */
1626
    int lmin;
1627

    
1628
    /**
1629
     * maximum lagrange multipler
1630
     * - encoding: set by user.
1631
     * - decoding: unused
1632
     */
1633
    int lmax;
1634

    
1635
    /**
1636
     * Palette control structure
1637
     * - encoding: ??? (no palette-enabled encoder yet)
1638
     * - decoding: set by user.
1639
     */
1640
    struct AVPaletteControl *palctrl;
1641

    
1642
    /**
1643
     * noise reduction strength
1644
     * - encoding: set by user.
1645
     * - decoding: unused
1646
     */
1647
    int noise_reduction;
1648

    
1649
    /**
1650
     * called at the beginning of a frame to get cr buffer for it.
1651
     * buffer type (size, hints) must be the same. lavc won't check it.
1652
     * lavc will pass previous buffer in pic, function should return
1653
     * same buffer or new buffer with old frame "painted" into it.
1654
     * if pic.data[0] == NULL must behave like get_buffer().
1655
     * - encoding: unused
1656
     * - decoding: set by lavc, user can override
1657
     */
1658
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1659

    
1660
    /**
1661
     * number of bits which should be loaded into the rc buffer before decoding starts
1662
     * - encoding: set by user.
1663
     * - decoding: unused
1664
     */
1665
    int rc_initial_buffer_occupancy;
1666

    
1667
    /**
1668
     *
1669
     * - encoding: set by user.
1670
     * - decoding: unused
1671
     */
1672
    int inter_threshold;
1673

    
1674
    /**
1675
     * CODEC_FLAG2_*.
1676
     * - encoding: set by user.
1677
     * - decoding: set by user.
1678
     */
1679
    int flags2;
1680

    
1681
    /**
1682
     * simulates errors in the bitstream to test error concealment.
1683
     * - encoding: set by user.
1684
     * - decoding: unused.
1685
     */
1686
    int error_rate;
1687

    
1688
    /**
1689
     * MP3 antialias algorithm, see FF_AA_* below.
1690
     * - encoding: unused
1691
     * - decoding: set by user
1692
     */
1693
    int antialias_algo;
1694
#define FF_AA_AUTO    0
1695
#define FF_AA_FASTINT 1 //not implemented yet
1696
#define FF_AA_INT     2
1697
#define FF_AA_FLOAT   3
1698
    /**
1699
     * Quantizer noise shaping.
1700
     * - encoding: set by user
1701
     * - decoding: unused
1702
     */
1703
    int quantizer_noise_shaping;
1704

    
1705
    /**
1706
     * Thread count.
1707
     * is used to decide how many independant tasks should be passed to execute()
1708
     * - encoding: set by user
1709
     * - decoding: set by user
1710
     */
1711
    int thread_count;
1712

    
1713
    /**
1714
     * the codec may call this to execute several independant things. it will return only after
1715
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1716
     * default implementation will execute the parts serially
1717
     * @param count the number of things to execute
1718
     * - encoding: set by lavc, user can override
1719
     * - decoding: set by lavc, user can override
1720
     */
1721
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1722

    
1723
    /**
1724
     * Thread opaque.
1725
     * can be used by execute() to store some per AVCodecContext stuff.
1726
     * - encoding: set by execute()
1727
     * - decoding: set by execute()
1728
     */
1729
    void *thread_opaque;
1730

    
1731
    /**
1732
     * Motion estimation threshold. under which no motion estimation is
1733
     * performed, but instead the user specified motion vectors are used
1734
     *
1735
     * - encoding: set by user
1736
     * - decoding: unused
1737
     */
1738
     int me_threshold;
1739

    
1740
    /**
1741
     * Macroblock threshold. under which the user specified macroblock types will be used
1742
     * - encoding: set by user
1743
     * - decoding: unused
1744
     */
1745
     int mb_threshold;
1746

    
1747
    /**
1748
     * precision of the intra dc coefficient - 8.
1749
     * - encoding: set by user
1750
     * - decoding: unused
1751
     */
1752
     int intra_dc_precision;
1753

    
1754
    /**
1755
     * noise vs. sse weight for the nsse comparsion function.
1756
     * - encoding: set by user
1757
     * - decoding: unused
1758
     */
1759
     int nsse_weight;
1760

    
1761
    /**
1762
     * number of macroblock rows at the top which are skipped.
1763
     * - encoding: unused
1764
     * - decoding: set by user
1765
     */
1766
     int skip_top;
1767

    
1768
    /**
1769
     * number of macroblock rows at the bottom which are skipped.
1770
     * - encoding: unused
1771
     * - decoding: set by user
1772
     */
1773
     int skip_bottom;
1774

    
1775
    /**
1776
     * profile
1777
     * - encoding: set by user
1778
     * - decoding: set by lavc
1779
     */
1780
     int profile;
1781
#define FF_PROFILE_UNKNOWN -99
1782

    
1783
    /**
1784
     * level
1785
     * - encoding: set by user
1786
     * - decoding: set by lavc
1787
     */
1788
     int level;
1789
#define FF_LEVEL_UNKNOWN -99
1790

    
1791
    /**
1792
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1793
     * - encoding: unused
1794
     * - decoding: set by user
1795
     */
1796
     int lowres;
1797

    
1798
    /**
1799
     * bitsream width / height. may be different from width/height if lowres
1800
     * or other things are used
1801
     * - encoding: unused
1802
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1803
     */
1804
    int coded_width, coded_height;
1805

    
1806
    /**
1807
     * frame skip threshold
1808
     * - encoding: set by user
1809
     * - decoding: unused
1810
     */
1811
    int frame_skip_threshold;
1812

    
1813
    /**
1814
     * frame skip factor
1815
     * - encoding: set by user
1816
     * - decoding: unused
1817
     */
1818
    int frame_skip_factor;
1819

    
1820
    /**
1821
     * frame skip exponent
1822
     * - encoding: set by user
1823
     * - decoding: unused
1824
     */
1825
    int frame_skip_exp;
1826

    
1827
    /**
1828
     * frame skip comparission function
1829
     * - encoding: set by user.
1830
     * - decoding: unused
1831
     */
1832
    int frame_skip_cmp;
1833

    
1834
    /**
1835
     * border processing masking. raises the quantizer for mbs on the borders
1836
     * of the picture.
1837
     * - encoding: set by user
1838
     * - decoding: unused
1839
     */
1840
    float border_masking;
1841

    
1842
    /**
1843
     * minimum MB lagrange multipler.
1844
     * - encoding: set by user.
1845
     * - decoding: unused
1846
     */
1847
    int mb_lmin;
1848

    
1849
    /**
1850
     * maximum MB lagrange multipler.
1851
     * - encoding: set by user.
1852
     * - decoding: unused
1853
     */
1854
    int mb_lmax;
1855

    
1856
    /**
1857
     *
1858
     * - encoding: set by user.
1859
     * - decoding: unused
1860
     */
1861
    int me_penalty_compensation;
1862

    
1863
    /**
1864
     *
1865
     * - encoding: unused
1866
     * - decoding: set by user.
1867
     */
1868
    enum AVDiscard skip_loop_filter;
1869

    
1870
    /**
1871
     *
1872
     * - encoding: unused
1873
     * - decoding: set by user.
1874
     */
1875
    enum AVDiscard skip_idct;
1876

    
1877
    /**
1878
     *
1879
     * - encoding: unused
1880
     * - decoding: set by user.
1881
     */
1882
    enum AVDiscard skip_frame;
1883

    
1884
    /**
1885
     *
1886
     * - encoding: set by user.
1887
     * - decoding: unused
1888
     */
1889
    int bidir_refine;
1890

    
1891
    /**
1892
     *
1893
     * - encoding: set by user.
1894
     * - decoding: unused
1895
     */
1896
    int brd_scale;
1897

    
1898
    /**
1899
     * constant rate factor - quality-based VBR - values ~correspond to qps
1900
     * - encoding: set by user.
1901
     * - decoding: unused
1902
     */
1903
    float crf;
1904

    
1905
    /**
1906
     * constant quantization parameter rate control method
1907
     * - encoding: set by user.
1908
     * - decoding: unused
1909
     */
1910
    int cqp;
1911

    
1912
    /**
1913
     * minimum gop size
1914
     * - encoding: set by user.
1915
     * - decoding: unused
1916
     */
1917
    int keyint_min;
1918

    
1919
    /**
1920
     * number of reference frames
1921
     * - encoding: set by user.
1922
     * - decoding: unused
1923
     */
1924
    int refs;
1925

    
1926
    /**
1927
     * chroma qp offset from luma
1928
     * - encoding: set by user.
1929
     * - decoding: unused
1930
     */
1931
    int chromaoffset;
1932

    
1933
    /**
1934
     * influences how often b-frames are used
1935
     * - encoding: set by user.
1936
     * - decoding: unused
1937
     */
1938
    int bframebias;
1939

    
1940
    /**
1941
     * trellis RD quantization
1942
     * - encoding: set by user.
1943
     * - decoding: unused
1944
     */
1945
    int trellis;
1946

    
1947
    /**
1948
     * reduce fluctuations in qp (before curve compression)
1949
     * - encoding: set by user.
1950
     * - decoding: unused
1951
     */
1952
    float complexityblur;
1953

    
1954
    /**
1955
     * in-loop deblocking filter alphac0 parameter
1956
     * alpha is in the range -6...6
1957
     * - encoding: set by user.
1958
     * - decoding: unused
1959
     */
1960
    int deblockalpha;
1961

    
1962
    /**
1963
     * in-loop deblocking filter beta parameter
1964
     * beta is in the range -6...6
1965
     * - encoding: set by user.
1966
     * - decoding: unused
1967
     */
1968
    int deblockbeta;
1969

    
1970
    /**
1971
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1972
     * - encoding: set by user.
1973
     * - decoding: unused
1974
     */
1975
    int partitions;
1976
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1977
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1978
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1979
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1980
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1981

    
1982
    /**
1983
     * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1984
     * - encoding: set by user.
1985
     * - decoding: unused
1986
     */
1987
    int directpred;
1988

    
1989
    /**
1990
     * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1991
     * - encoding: set by user.
1992
     * - decoding: unused
1993
     */
1994
    int cutoff;
1995

    
1996
    /**
1997
     * multiplied by qscale for each frame and added to scene_change_score
1998
     * - encoding: set by user.
1999
     * - decoding: unused
2000
     */
2001
    int scenechange_factor;
2002

    
2003
    /**
2004
     *
2005
     * note: value depends upon the compare functin used for fullpel ME
2006
     * - encoding: set by user.
2007
     * - decoding: unused
2008
     */
2009
    int mv0_threshold;
2010

    
2011
    /**
2012
     * adjusts sensitivity of b_frame_strategy 1
2013
     * - encoding: set by user.
2014
     * - decoding: unused
2015
     */
2016
    int b_sensitivity;
2017

    
2018
    /**
2019
     * - encoding: set by user.
2020
     * - decoding: unused
2021
     */
2022
    int compression_level;
2023
#define FF_COMPRESSION_DEFAULT -1
2024

    
2025
    /**
2026
     * sets whether to use LPC mode - used by FLAC encoder
2027
     * - encoding: set by user.
2028
     * - decoding: unused.
2029
     */
2030
    int use_lpc;
2031

    
2032
    /**
2033
     * LPC coefficient precision - used by FLAC encoder
2034
     * - encoding: set by user.
2035
     * - decoding: unused.
2036
     */
2037
    int lpc_coeff_precision;
2038

    
2039
    /**
2040
     * - encoding: set by user.
2041
     * - decoding: unused.
2042
     */
2043
    int min_prediction_order;
2044

    
2045
    /**
2046
     * - encoding: set by user.
2047
     * - decoding: unused.
2048
     */
2049
    int max_prediction_order;
2050

    
2051
    /**
2052
     * search method for selecting prediction order
2053
     * - encoding: set by user.
2054
     * - decoding: unused.
2055
     */
2056
    int prediction_order_method;
2057

    
2058
    /**
2059
     * - encoding: set by user.
2060
     * - decoding: unused.
2061
     */
2062
    int min_partition_order;
2063

    
2064
    /**
2065
     * - encoding: set by user.
2066
     * - decoding: unused.
2067
     */
2068
    int max_partition_order;
2069

    
2070
    /**
2071
     * GOP timecode frame start number, in non drop frame format
2072
     * - encoding: set by user.
2073
     * - decoding: unused.
2074
     */
2075
    int64_t timecode_frame_start;
2076
} AVCodecContext;
2077

    
2078
/**
2079
 * AVCodec.
2080
 */
2081
typedef struct AVCodec {
2082
    const char *name;
2083
    enum CodecType type;
2084
    enum CodecID id;
2085
    int priv_data_size;
2086
    int (*init)(AVCodecContext *);
2087
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2088
    int (*close)(AVCodecContext *);
2089
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2090
                  uint8_t *buf, int buf_size);
2091
    int capabilities;
2092
    struct AVCodec *next;
2093
    void (*flush)(AVCodecContext *);
2094
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2095
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2096
} AVCodec;
2097

    
2098
/**
2099
 * four components are given, that's all.
2100
 * the last component is alpha
2101
 */
2102
typedef struct AVPicture {
2103
    uint8_t *data[4];
2104
    int linesize[4];       ///< number of bytes per line
2105
} AVPicture;
2106

    
2107
/**
2108
 * AVPaletteControl
2109
 * This structure defines a method for communicating palette changes
2110
 * between and demuxer and a decoder.
2111
 * this is totally broken, palette changes should be sent as AVPackets
2112
 */
2113
#define AVPALETTE_SIZE 1024
2114
#define AVPALETTE_COUNT 256
2115
typedef struct AVPaletteControl {
2116

    
2117
    /* demuxer sets this to 1 to indicate the palette has changed;
2118
     * decoder resets to 0 */
2119
    int palette_changed;
2120

    
2121
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2122
     * the individual palette components should be on a 8-bit scale; if
2123
     * the palette data comes from a IBM VGA native format, the component
2124
     * data is probably 6 bits in size and needs to be scaled */
2125
    unsigned int palette[AVPALETTE_COUNT];
2126

    
2127
} AVPaletteControl attribute_deprecated;
2128

    
2129
typedef struct AVSubtitleRect {
2130
    uint16_t x;
2131
    uint16_t y;
2132
    uint16_t w;
2133
    uint16_t h;
2134
    uint16_t nb_colors;
2135
    int linesize;
2136
    uint32_t *rgba_palette;
2137
    uint8_t *bitmap;
2138
} AVSubtitleRect;
2139

    
2140
typedef struct AVSubtitle {
2141
    uint16_t format; /* 0 = graphics */
2142
    uint32_t start_display_time; /* relative to packet pts, in ms */
2143
    uint32_t end_display_time; /* relative to packet pts, in ms */
2144
    uint32_t num_rects;
2145
    AVSubtitleRect *rects;
2146
} AVSubtitle;
2147

    
2148
extern AVCodec ac3_encoder;
2149
extern AVCodec amr_nb_encoder;
2150
extern AVCodec amr_wb_encoder;
2151
extern AVCodec asv1_encoder;
2152
extern AVCodec asv2_encoder;
2153
extern AVCodec bmp_encoder;
2154
extern AVCodec dvvideo_encoder;
2155
extern AVCodec faac_encoder;
2156
extern AVCodec ffv1_encoder;
2157
extern AVCodec ffvhuff_encoder;
2158
extern AVCodec flac_encoder;
2159
extern AVCodec flashsv_encoder;
2160
extern AVCodec flv_encoder;
2161
extern AVCodec gif_encoder;
2162
extern AVCodec h261_encoder;
2163
extern AVCodec h263_encoder;
2164
extern AVCodec h263p_encoder;
2165
extern AVCodec h264_encoder;
2166
extern AVCodec huffyuv_encoder;
2167
extern AVCodec jpegls_encoder;
2168
extern AVCodec libgsm_encoder;
2169
extern AVCodec libgsm_ms_encoder;
2170
extern AVCodec libtheora_encoder;
2171
extern AVCodec ljpeg_encoder;
2172
extern AVCodec mdec_encoder;
2173
extern AVCodec mjpeg_encoder;
2174
extern AVCodec mp2_encoder;
2175
extern AVCodec mp3lame_encoder;
2176
extern AVCodec mpeg1video_encoder;
2177
extern AVCodec mpeg2video_encoder;
2178
extern AVCodec mpeg4_encoder;
2179
extern AVCodec msmpeg4v1_encoder;
2180
extern AVCodec msmpeg4v2_encoder;
2181
extern AVCodec msmpeg4v3_encoder;
2182
extern AVCodec oggvorbis_encoder;
2183
extern AVCodec pam_encoder;
2184
extern AVCodec pbm_encoder;
2185
extern AVCodec pgm_encoder;
2186
extern AVCodec pgmyuv_encoder;
2187
extern AVCodec png_encoder;
2188
extern AVCodec ppm_encoder;
2189
extern AVCodec rv10_encoder;
2190
extern AVCodec rv20_encoder;
2191
extern AVCodec snow_encoder;
2192
extern AVCodec sonic_encoder;
2193
extern AVCodec sonic_ls_encoder;
2194
extern AVCodec svq1_encoder;
2195
extern AVCodec vcr1_encoder;
2196
extern AVCodec vorbis_encoder;
2197
extern AVCodec wmav1_encoder;
2198
extern AVCodec wmav2_encoder;
2199
extern AVCodec wmv1_encoder;
2200
extern AVCodec wmv2_encoder;
2201
extern AVCodec x264_encoder;
2202
extern AVCodec xvid_encoder;
2203
extern AVCodec zlib_encoder;
2204
extern AVCodec zmbv_encoder;
2205

    
2206
extern AVCodec aac_decoder;
2207
extern AVCodec aasc_decoder;
2208
extern AVCodec alac_decoder;
2209
extern AVCodec amr_nb_decoder;
2210
extern AVCodec amr_wb_decoder;
2211
extern AVCodec asv1_decoder;
2212
extern AVCodec asv2_decoder;
2213
extern AVCodec avs_decoder;
2214
extern AVCodec bmp_decoder;
2215
extern AVCodec cavs_decoder;
2216
extern AVCodec cinepak_decoder;
2217
extern AVCodec cljr_decoder;
2218
extern AVCodec cook_decoder;
2219
extern AVCodec cscd_decoder;
2220
extern AVCodec cyuv_decoder;
2221
extern AVCodec dsicinaudio_decoder;
2222
extern AVCodec dsicinvideo_decoder;
2223
extern AVCodec dvvideo_decoder;
2224
extern AVCodec eightbps_decoder;
2225
extern AVCodec ffv1_decoder;
2226
extern AVCodec ffvhuff_decoder;
2227
extern AVCodec flac_decoder;
2228
extern AVCodec flashsv_decoder;
2229
extern AVCodec flic_decoder;
2230
extern AVCodec flv_decoder;
2231
extern AVCodec fourxm_decoder;
2232
extern AVCodec fraps_decoder;
2233
extern AVCodec gif_decoder;
2234
extern AVCodec h261_decoder;
2235
extern AVCodec h263_decoder;
2236
extern AVCodec h263i_decoder;
2237
extern AVCodec h264_decoder;
2238
extern AVCodec huffyuv_decoder;
2239
extern AVCodec idcin_decoder;
2240
extern AVCodec imc_decoder;
2241
extern AVCodec indeo2_decoder;
2242
extern AVCodec indeo3_decoder;
2243
extern AVCodec interplay_dpcm_decoder;
2244
extern AVCodec interplay_video_decoder;
2245
extern AVCodec kmvc_decoder;
2246
extern AVCodec libgsm_decoder;
2247
extern AVCodec libgsm_ms_decoder;
2248
extern AVCodec loco_decoder;
2249
extern AVCodec mace3_decoder;
2250
extern AVCodec mace6_decoder;
2251
extern AVCodec mdec_decoder;
2252
extern AVCodec mjpeg_decoder;
2253
extern AVCodec mjpegb_decoder;
2254
extern AVCodec mmvideo_decoder;
2255
extern AVCodec mp2_decoder;
2256
extern AVCodec mp3_decoder;
2257
extern AVCodec mp3adu_decoder;
2258
extern AVCodec mp3on4_decoder;
2259
extern AVCodec mpc7_decoder;
2260
extern AVCodec mpeg1video_decoder;
2261
extern AVCodec mpeg2video_decoder;
2262
extern AVCodec mpeg4_decoder;
2263
extern AVCodec mpeg4aac_decoder;
2264
extern AVCodec mpeg_xvmc_decoder;
2265
extern AVCodec mpegvideo_decoder;
2266
extern AVCodec msmpeg4v1_decoder;
2267
extern AVCodec msmpeg4v2_decoder;
2268
extern AVCodec msmpeg4v3_decoder;
2269
extern AVCodec msrle_decoder;
2270
extern AVCodec msvideo1_decoder;
2271
extern AVCodec mszh_decoder;
2272
extern AVCodec nuv_decoder;
2273
extern AVCodec oggvorbis_decoder;
2274
extern AVCodec png_decoder;
2275
extern AVCodec qdm2_decoder;
2276
extern AVCodec qdraw_decoder;
2277
extern AVCodec qpeg_decoder;
2278
extern AVCodec qtrle_decoder;
2279
extern AVCodec ra_144_decoder;
2280
extern AVCodec ra_288_decoder;
2281
extern AVCodec roq_decoder;
2282
extern AVCodec roq_dpcm_decoder;
2283
extern AVCodec rpza_decoder;
2284
extern AVCodec rv10_decoder;
2285
extern AVCodec rv20_decoder;
2286
extern AVCodec rv30_decoder;
2287
extern AVCodec rv40_decoder;
2288
extern AVCodec shorten_decoder;
2289
extern AVCodec smackaud_decoder;
2290
extern AVCodec smacker_decoder;
2291
extern AVCodec smc_decoder;
2292
extern AVCodec snow_decoder;
2293
extern AVCodec sol_dpcm_decoder;
2294
extern AVCodec sonic_decoder;
2295
extern AVCodec sp5x_decoder;
2296
extern AVCodec svq1_decoder;
2297
extern AVCodec svq3_decoder;
2298
extern AVCodec targa_decoder;
2299
extern AVCodec theora_decoder;
2300
extern AVCodec tiertexseqvideo_decoder;
2301
extern AVCodec tiff_decoder;
2302
extern AVCodec truemotion1_decoder;
2303
extern AVCodec truemotion2_decoder;
2304
extern AVCodec truespeech_decoder;
2305
extern AVCodec tscc_decoder;
2306
extern AVCodec tta_decoder;
2307
extern AVCodec ulti_decoder;
2308
extern AVCodec vc1_decoder;
2309
extern AVCodec vcr1_decoder;
2310
extern AVCodec vmdaudio_decoder;
2311
extern AVCodec vmdvideo_decoder;
2312
extern AVCodec vmnc_decoder;
2313
extern AVCodec vorbis_decoder;
2314
extern AVCodec vp3_decoder;
2315
extern AVCodec vp5_decoder;
2316
extern AVCodec vp6_decoder;
2317
extern AVCodec vp6f_decoder;
2318
extern AVCodec vqa_decoder;
2319
extern AVCodec wavpack_decoder;
2320
extern AVCodec wmav1_decoder;
2321
extern AVCodec wmav2_decoder;
2322
extern AVCodec wmv1_decoder;
2323
extern AVCodec wmv2_decoder;
2324
extern AVCodec wmv3_decoder;
2325
extern AVCodec wnv1_decoder;
2326
extern AVCodec ws_snd1_decoder;
2327
extern AVCodec xan_dpcm_decoder;
2328
extern AVCodec xan_wc3_decoder;
2329
extern AVCodec xl_decoder;
2330
extern AVCodec zlib_decoder;
2331
extern AVCodec zmbv_decoder;
2332

    
2333
/* pcm codecs */
2334
#define PCM_CODEC(id, name) \
2335
extern AVCodec name ## _decoder; \
2336
extern AVCodec name ## _encoder
2337

    
2338
PCM_CODEC(CODEC_ID_PCM_ALAW,    pcm_alaw);
2339
PCM_CODEC(CODEC_ID_PCM_MULAW,   pcm_mulaw);
2340
PCM_CODEC(CODEC_ID_PCM_S8,      pcm_s8);
2341
PCM_CODEC(CODEC_ID_PCM_S16BE,   pcm_s16be);
2342
PCM_CODEC(CODEC_ID_PCM_S16LE,   pcm_s16le);
2343
PCM_CODEC(CODEC_ID_PCM_S24BE,   pcm_s24be);
2344
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2345
PCM_CODEC(CODEC_ID_PCM_S24LE,   pcm_s24le);
2346
PCM_CODEC(CODEC_ID_PCM_S32BE,   pcm_s32be);
2347
PCM_CODEC(CODEC_ID_PCM_S32LE,   pcm_s32le);
2348
PCM_CODEC(CODEC_ID_PCM_U8,      pcm_u8);
2349
PCM_CODEC(CODEC_ID_PCM_U16BE,   pcm_u16be);
2350
PCM_CODEC(CODEC_ID_PCM_U16LE,   pcm_u16le);
2351
PCM_CODEC(CODEC_ID_PCM_U24BE,   pcm_u24be);
2352
PCM_CODEC(CODEC_ID_PCM_U24LE,   pcm_u24le);
2353
PCM_CODEC(CODEC_ID_PCM_U32BE,   pcm_u32be);
2354
PCM_CODEC(CODEC_ID_PCM_U32LE,   pcm_u32le);
2355

    
2356
/* adpcm codecs */
2357

    
2358
PCM_CODEC(CODEC_ID_ADPCM_4XM,     adpcm_4xm);
2359
PCM_CODEC(CODEC_ID_ADPCM_ADX,     adpcm_adx);
2360
PCM_CODEC(CODEC_ID_ADPCM_CT,      adpcm_ct);
2361
PCM_CODEC(CODEC_ID_ADPCM_EA,      adpcm_ea);
2362
PCM_CODEC(CODEC_ID_ADPCM_G726,    adpcm_g726);
2363
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2364
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2365
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT,  adpcm_ima_qt);
2366
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2367
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS,  adpcm_ima_ws);
2368
PCM_CODEC(CODEC_ID_ADPCM_MS,      adpcm_ms);
2369
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2370
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2371
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2372
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG,  adpcm_ima_smjpeg);
2373
PCM_CODEC(CODEC_ID_ADPCM_SWF,     adpcm_swf);
2374
PCM_CODEC(CODEC_ID_ADPCM_XA,      adpcm_xa);
2375
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA,  adpcm_yamaha);
2376

    
2377
#undef PCM_CODEC
2378

    
2379
/* dummy raw video codec */
2380
extern AVCodec rawvideo_decoder;
2381
extern AVCodec rawvideo_encoder;
2382

    
2383
/* the following codecs use external GPL libs */
2384
extern AVCodec dts_decoder;
2385
extern AVCodec liba52_decoder;
2386

    
2387
/* subtitles */
2388
extern AVCodec dvbsub_decoder;
2389
extern AVCodec dvbsub_encoder;
2390
extern AVCodec dvdsub_decoder;
2391
extern AVCodec dvdsub_encoder;
2392

    
2393
/* resample.c */
2394

    
2395
struct ReSampleContext;
2396
struct AVResampleContext;
2397

    
2398
typedef struct ReSampleContext ReSampleContext;
2399

    
2400
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2401
                                     int output_rate, int input_rate);
2402
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2403
void audio_resample_close(ReSampleContext *s);
2404

    
2405
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2406
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2407
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2408
void av_resample_close(struct AVResampleContext *c);
2409

    
2410
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2411
/* YUV420 format is assumed ! */
2412

    
2413
struct ImgReSampleContext attribute_deprecated;
2414

    
2415
typedef struct ImgReSampleContext ImgReSampleContext attribute_deprecated;
2416

    
2417
attribute_deprecated ImgReSampleContext *img_resample_init(int output_width, int output_height,
2418
                                      int input_width, int input_height);
2419

    
2420
attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2421
                                      int iwidth, int iheight,
2422
                                      int topBand, int bottomBand,
2423
                                      int leftBand, int rightBand,
2424
                                      int padtop, int padbottom,
2425
                                      int padleft, int padright);
2426

    
2427

    
2428
attribute_deprecated void img_resample(ImgReSampleContext *s,
2429
                  AVPicture *output, const AVPicture *input);
2430

    
2431
attribute_deprecated void img_resample_close(ImgReSampleContext *s);
2432

    
2433
#endif
2434

    
2435
/**
2436
 * Allocate memory for a picture.  Call avpicture_free to free it.
2437
 *
2438
 * @param picture the picture to be filled in.
2439
 * @param pix_fmt the format of the picture.
2440
 * @param width the width of the picture.
2441
 * @param height the height of the picture.
2442
 * @return Zero if successful, a negative value if not.
2443
 */
2444
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2445

    
2446
/**
2447
 * Free a picture previously allocated by avpicture_alloc().
2448
 *
2449
 * @param picture The AVPicture to be freed.
2450
 */
2451
void avpicture_free(AVPicture *picture);
2452

    
2453
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2454
                   int pix_fmt, int width, int height);
2455
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2456
                     unsigned char *dest, int dest_size);
2457
int avpicture_get_size(int pix_fmt, int width, int height);
2458
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2459
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2460
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2461
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2462
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2463

    
2464
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2465
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2466
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2467
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2468
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2469
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2470

    
2471
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2472
                             int has_alpha);
2473
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2474
                              int has_alpha, int *loss_ptr);
2475

    
2476
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2477
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2478
int img_get_alpha_info(const AVPicture *src,
2479
                       int pix_fmt, int width, int height);
2480

    
2481
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2482
/* convert among pixel formats */
2483
attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
2484
                const AVPicture *src, int pix_fmt,
2485
                int width, int height);
2486
#endif
2487

    
2488
/* deinterlace a picture */
2489
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2490
                          int pix_fmt, int width, int height);
2491

    
2492
/* external high level API */
2493

    
2494
extern AVCodec *first_avcodec;
2495

    
2496
/* returns LIBAVCODEC_VERSION_INT constant */
2497
unsigned avcodec_version(void);
2498
/* returns LIBAVCODEC_BUILD constant */
2499
unsigned avcodec_build(void);
2500

    
2501
/**
2502
 * Initializes libavcodec.
2503
 *
2504
 * @warning This function \e must be called before any other libavcodec
2505
 * function.
2506
 */
2507
void avcodec_init(void);
2508

    
2509
void register_avcodec(AVCodec *format);
2510

    
2511
/**
2512
 * Finds an encoder with a matching codec ID.
2513
 *
2514
 * @param id CodecID of the requested encoder.
2515
 * @return An encoder if one was found, NULL otherwise.
2516
 */
2517
AVCodec *avcodec_find_encoder(enum CodecID id);
2518

    
2519
/**
2520
 * Finds an encoder with the specified name.
2521
 *
2522
 * @param name Name of the requested encoder.
2523
 * @return An encoder if one was found, NULL otherwise.
2524
 */
2525
AVCodec *avcodec_find_encoder_by_name(const char *name);
2526

    
2527
/**
2528
 * Finds a decoder with a matching codec ID.
2529
 *
2530
 * @param id CodecID of the requested decoder.
2531
 * @return A decoder if one was found, NULL otherwise.
2532
 */
2533
AVCodec *avcodec_find_decoder(enum CodecID id);
2534

    
2535
/**
2536
 * Finds an decoder with the specified name.
2537
 *
2538
 * @param name Name of the requested decoder.
2539
 * @return A decoder if one was found, NULL otherwise.
2540
 */
2541
AVCodec *avcodec_find_decoder_by_name(const char *name);
2542
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2543

    
2544
/**
2545
 * Sets the fields of the given AVCodecContext to default values.
2546
 *
2547
 * @param s The AVCodecContext of which the fields should be set to default values.
2548
 */
2549
void avcodec_get_context_defaults(AVCodecContext *s);
2550

    
2551
/**
2552
 * Allocates an AVCodecContext and sets its fields to default values.  The
2553
 * resulting struct can be deallocated by simply calling av_free().
2554
 *
2555
 * @return An AVCodecContext filled with default values or NULL on failure.
2556
 * @see avcodec_get_context_defaults
2557
 */
2558
AVCodecContext *avcodec_alloc_context(void);
2559

    
2560
/**
2561
 * Sets the fields of the given AVFrame to default values.
2562
 *
2563
 * @param pic The AVFrame of which the fields should be set to default values.
2564
 */
2565
void avcodec_get_frame_defaults(AVFrame *pic);
2566

    
2567
/**
2568
 * Allocates an AVFrame and sets its fields to default values.  The resulting
2569
 * struct can be deallocated by simply calling av_free().
2570
 *
2571
 * @return An AVFrame filled with default values or NULL on failure.
2572
 * @see avcodec_get_frame_defaults
2573
 */
2574
AVFrame *avcodec_alloc_frame(void);
2575

    
2576
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2577
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2578
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2579
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2580

    
2581
/**
2582
 * Checks if the given dimension of a picture is valid, meaning that all
2583
 * bytes of the picture can be addressed with a signed int.
2584
 *
2585
 * @param[in] w Width of the picture.
2586
 * @param[in] h Height of the picture.
2587
 * @return Zero if valid, a negative value if invalid.
2588
 */
2589
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2590
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2591

    
2592
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2593
void avcodec_thread_free(AVCodecContext *s);
2594
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2595
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2596
//FIXME func typedef
2597

    
2598
/**
2599
 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2600
 * function the context has to be allocated.
2601
 *
2602
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2603
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2604
 * retrieving a codec.
2605
 *
2606
 * @warning This function is not thread save!
2607
 *
2608
 * @code
2609
 * codec = avcodec_find_decoder(CODEC_ID_H264);
2610
 * if (!codec)
2611
 *     exit(1);
2612
 *
2613
 * context = avcodec_alloc_context();
2614
 *
2615
 * if (avcodec_open(context, codec) < 0)
2616
 *     exit(1);
2617
 * @endcode
2618
 *
2619
 * @param avctx The context which will be setup to use the given codec.
2620
 * @param codec The codec to use within the context.
2621
 * @return Zero on success, a negative value on error.
2622
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2623
 */
2624
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2625

    
2626
/**
2627
 * @deprecated Use avcodec_decode_audio2() instead.
2628
 */
2629
attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2630
                         int *frame_size_ptr,
2631
                         uint8_t *buf, int buf_size);
2632

    
2633
/**
2634
 * Decodes an audio frame from \p buf into \p samples.
2635
 * The avcodec_decode_audio2() function decodes a frame of audio from the input
2636
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2637
 * audiocodec which was coupled with \p avctx using avcodec_open(). The
2638
 * resulting decoded frame is stored in output buffer \p samples.  If no frame
2639
 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2640
 * decompressed frame size in \e bytes.
2641
 *
2642
 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2643
 * output buffer before calling avcodec_decode_audio2().
2644
 *
2645
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2646
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2647
 * bits at once and could read over the end.
2648
 *
2649
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2650
 * no overreading happens for damaged MPEG streams.
2651
 *
2652
 * @note You might have to align the input buffer \p buf and output buffer \p
2653
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2654
 * necessary at all, on others it won't work at all if not aligned and on others
2655
 * it will work but it will have an impact on performance. In practice, the
2656
 * bitstream should have 4 byte alignment at minimum and all sample data should
2657
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2658
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2659
 * start of the buffer to 16.
2660
 *
2661
 * @param avctx The codec context.
2662
 * @param[out] samples The output buffer.
2663
 * @param[in,out] frame_size_ptr The output buffer size in bytes.
2664
 * @param[in] buf The input buffer.
2665
 * @param[in] buf_size The input buffer size in bytes.
2666
 * @return On error a negative value is returned, otherwise the number of bytes
2667
 * used or zero if no frame could be decompressed.
2668
 */
2669
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2670
                         int *frame_size_ptr,
2671
                         uint8_t *buf, int buf_size);
2672

    
2673
/**
2674
 * Decodes a video frame from \p buf into \p picture.
2675
 * The avcodec_decode_video() function decodes a frame of video from the input
2676
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2677
 * videocodec which was coupled with \p avctx using avcodec_open(). The
2678
 * resulting decoded frame is stored in \p picture.
2679
 *
2680
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2681
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2682
 * bits at once and could read over the end.
2683
 *
2684
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2685
 * no overreading happens for damaged MPEG streams.
2686
 *
2687
 * @note You might have to align the input buffer \p buf and output buffer \p
2688
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2689
 * necessary at all, on others it won't work at all if not aligned and on others
2690
 * it will work but it will have an impact on performance. In practice, the
2691
 * bitstream should have 4 byte alignment at minimum and all sample data should
2692
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2693
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2694
 * start of the buffer to 16.
2695
 *
2696
 * @param avctx The codec context.
2697
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
2698
 * @param[in] buf The input buffer.
2699
 * @param[in] buf_size The size of the input buffer in bytes.
2700
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is non zero.
2701
 * @return On error a negative value is returned, otherwise the number of bytes
2702
 * used or zero if no frame could be decompressed.
2703
 */
2704
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2705
                         int *got_picture_ptr,
2706
                         uint8_t *buf, int buf_size);
2707

    
2708
/* decode a subtitle message. return -1 if error, otherwise return the
2709
   *number of bytes used. If no subtitle could be decompressed,
2710
   *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
2711
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2712
                            int *got_sub_ptr,
2713
                            const uint8_t *buf, int buf_size);
2714
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2715
                        int *data_size_ptr,
2716
                        uint8_t *buf, int buf_size);
2717

    
2718
/**
2719
 * Encodes an audio frame from \p samples into \p buf.
2720
 * The avcodec_encode_audio() function encodes a frame of audio from the input
2721
 * buffer \p samples. To encode it, it makes use of the audiocodec which was
2722
 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
2723
 * stored in output buffer \p buf.
2724
 *
2725
 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
2726
 *
2727
 * @param avctx The codec context.
2728
 * @param[out] buf The output buffer.
2729
 * @param[in] buf_size The output buffer size.
2730
 * @param[in] samples The input buffer containing the samples.
2731
 * @return On error a negative value is returned, on succes zero or the number
2732
 * of bytes used from the input buffer.
2733
 */
2734
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2735
                         const short *samples);
2736

    
2737
/**
2738
 * Encodes a video frame from \p pict into \p buf.
2739
 * The avcodec_encode_video() function encodes a frame of video from the input
2740
 * \p pict. To encode it, it makes use of the videocodec which was coupled with
2741
 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
2742
 * frame are stored in the output buffer \p buf. The input picture should be
2743
 * stored using a specific format, namely \c avctx.pix_fmt.
2744
 *
2745
 * @param avctx The codec context.
2746
 * @param[out] buf The output buffer for the bitstream of encoded frame.
2747
 * @param[in] buf_size The size of the outputbuffer in bytes.
2748
 * @param[in] pict The input picture to encode.
2749
 * @return On error a negative value is returned, on success zero or the number
2750
 * of bytes used from the input buffer.
2751
 */
2752
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2753
                         const AVFrame *pict);
2754
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2755
                            const AVSubtitle *sub);
2756

    
2757
int avcodec_close(AVCodecContext *avctx);
2758

    
2759
void avcodec_register_all(void);
2760

    
2761
/**
2762
 * Flush buffers, should be called when seeking or when switching to a different stream.
2763
 */
2764
void avcodec_flush_buffers(AVCodecContext *avctx);
2765

    
2766
void avcodec_default_free_buffers(AVCodecContext *s);
2767

    
2768
/* misc useful functions */
2769

    
2770
/**
2771
 * Returns a single letter to describe the given picture type \p pict_type.
2772
 *
2773
 * @param[in] pict_type The picture type.
2774
 * @return A single character representing the picture type.
2775
 */
2776
char av_get_pict_type_char(int pict_type);
2777

    
2778
/**
2779
 * returns codec bits per sample
2780
 */
2781
int av_get_bits_per_sample(enum CodecID codec_id);
2782

    
2783
/* frame parsing */
2784
typedef struct AVCodecParserContext {
2785
    void *priv_data;
2786
    struct AVCodecParser *parser;
2787
    int64_t frame_offset; /* offset of the current frame */
2788
    int64_t cur_offset; /* current offset
2789
                           (incremented by each av_parser_parse()) */
2790
    int64_t last_frame_offset; /* offset of the last frame */
2791
    /* video info */
2792
    int pict_type; /* XXX: put it back in AVCodecContext */
2793
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2794
    int64_t pts;     /* pts of the current frame */
2795
    int64_t dts;     /* dts of the current frame */
2796

    
2797
    /* private data */
2798
    int64_t last_pts;
2799
    int64_t last_dts;
2800
    int fetch_timestamp;
2801

    
2802
#define AV_PARSER_PTS_NB 4
2803
    int cur_frame_start_index;
2804
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2805
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2806
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2807

    
2808
    int flags;
2809
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2810
} AVCodecParserContext;
2811

    
2812
typedef struct AVCodecParser {
2813
    int codec_ids[5]; /* several codec IDs are permitted */
2814
    int priv_data_size;
2815
    int (*parser_init)(AVCodecParserContext *s);
2816
    int (*parser_parse)(AVCodecParserContext *s,
2817
                        AVCodecContext *avctx,
2818
                        uint8_t **poutbuf, int *poutbuf_size,
2819
                        const uint8_t *buf, int buf_size);
2820
    void (*parser_close)(AVCodecParserContext *s);
2821
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2822
    struct AVCodecParser *next;
2823
} AVCodecParser;
2824

    
2825
extern AVCodecParser *av_first_parser;
2826

    
2827
void av_register_codec_parser(AVCodecParser *parser);
2828
AVCodecParserContext *av_parser_init(int codec_id);
2829
int av_parser_parse(AVCodecParserContext *s,
2830
                    AVCodecContext *avctx,
2831
                    uint8_t **poutbuf, int *poutbuf_size,
2832
                    const uint8_t *buf, int buf_size,
2833
                    int64_t pts, int64_t dts);
2834
int av_parser_change(AVCodecParserContext *s,
2835
                     AVCodecContext *avctx,
2836
                     uint8_t **poutbuf, int *poutbuf_size,
2837
                     const uint8_t *buf, int buf_size, int keyframe);
2838
void av_parser_close(AVCodecParserContext *s);
2839

    
2840
extern AVCodecParser aac_parser;
2841
extern AVCodecParser ac3_parser;
2842
extern AVCodecParser cavsvideo_parser;
2843
extern AVCodecParser dvbsub_parser;
2844
extern AVCodecParser dvdsub_parser;
2845
extern AVCodecParser h261_parser;
2846
extern AVCodecParser h263_parser;
2847
extern AVCodecParser h264_parser;
2848
extern AVCodecParser mjpeg_parser;
2849
extern AVCodecParser mpeg4video_parser;
2850
extern AVCodecParser mpegaudio_parser;
2851
extern AVCodecParser mpegvideo_parser;
2852
extern AVCodecParser pnm_parser;
2853
extern AVCodecParser vc1_parser;
2854

    
2855

    
2856
typedef struct AVBitStreamFilterContext {
2857
    void *priv_data;
2858
    struct AVBitStreamFilter *filter;
2859
    AVCodecParserContext *parser;
2860
    struct AVBitStreamFilterContext *next;
2861
} AVBitStreamFilterContext;
2862

    
2863

    
2864
typedef struct AVBitStreamFilter {
2865
    const char *name;
2866
    int priv_data_size;
2867
    int (*filter)(AVBitStreamFilterContext *bsfc,
2868
                  AVCodecContext *avctx, const char *args,
2869
                  uint8_t **poutbuf, int *poutbuf_size,
2870
                  const uint8_t *buf, int buf_size, int keyframe);
2871
    struct AVBitStreamFilter *next;
2872
} AVBitStreamFilter;
2873

    
2874
extern AVBitStreamFilter *av_first_bitstream_filter;
2875

    
2876
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2877
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2878
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2879
                               AVCodecContext *avctx, const char *args,
2880
                               uint8_t **poutbuf, int *poutbuf_size,
2881
                               const uint8_t *buf, int buf_size, int keyframe);
2882
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2883

    
2884
extern AVBitStreamFilter dump_extradata_bsf;
2885
extern AVBitStreamFilter remove_extradata_bsf;
2886
extern AVBitStreamFilter noise_bsf;
2887
extern AVBitStreamFilter mp3_header_compress_bsf;
2888
extern AVBitStreamFilter mp3_header_decompress_bsf;
2889
extern AVBitStreamFilter mjpega_dump_header_bsf;
2890

    
2891

    
2892
/* memory */
2893

    
2894
/**
2895
 * realloc which does nothing if the block is large enough
2896
 */
2897
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2898

    
2899
/* for static data only */
2900

    
2901
/**
2902
 * free all static arrays and reset pointers to 0.
2903
 * call av_free_static to release all staticaly allocated tables
2904
 */
2905
void av_free_static(void);
2906

    
2907
/**
2908
 * allocation of static arrays - do not use for normal allocation.
2909
 */
2910
void *av_mallocz_static(unsigned int size);
2911

    
2912
/**
2913
 * same as above, but does realloc
2914
 */
2915
void *av_realloc_static(void *ptr, unsigned int size);
2916

    
2917
void img_copy(AVPicture *dst, const AVPicture *src,
2918
              int pix_fmt, int width, int height);
2919

    
2920
int img_crop(AVPicture *dst, const AVPicture *src,
2921
             int pix_fmt, int top_band, int left_band);
2922

    
2923
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2924
            int padtop, int padbottom, int padleft, int padright, int *color);
2925

    
2926
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2927

    
2928
/* error handling */
2929
#if EINVAL > 0
2930
#define AVERROR(e) (-(e)) /**< returns a negative error code from a POSIX error code, to return from library functions. */
2931
#define AVUNERROR(e) (-(e)) /**< returns a POSIX error code from a library function error return value. */
2932
#else
2933
/* some platforms have E* and errno already negated. */
2934
#define AVERROR(e) (e)
2935
#define AVUNERROR(e) (e)
2936
#endif
2937
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
2938
#define AVERROR_IO          AVERROR(EIO)     /**< i/o error */
2939
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< number syntax expected in filename */
2940
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
2941
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
2942
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
2943
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< operation not supported */
2944

    
2945
#ifdef __cplusplus
2946
}
2947
#endif
2948

    
2949
#endif /* AVCODEC_H */