Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 5acd8d9e

History | View | Annotate | Download (95.8 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
#include "avutil.h"
31
#include <sys/types.h> /* size_t */
32

    
33
#define AV_STRINGIFY(s)         AV_TOSTRING(s)
34
#define AV_TOSTRING(s) #s
35

    
36
#define LIBAVCODEC_VERSION_INT  ((51<<16)+(40<<8)+4)
37
#define LIBAVCODEC_VERSION      51.40.4
38
#define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
39

    
40
#define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
41

    
42
#define AV_NOPTS_VALUE          INT64_C(0x8000000000000000)
43
#define AV_TIME_BASE            1000000
44
#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
45

    
46
/**
47
 *
48
 * If you add a codec ID to this list, add it so that
49
 * 1. no value of a existing codec ID changes (that would break ABI),
50
 * 2. it is as close as possible to similar codecs.
51
 */
52
enum CodecID {
53
    CODEC_ID_NONE,
54
    CODEC_ID_MPEG1VIDEO,
55
    CODEC_ID_MPEG2VIDEO, /* preferred ID for MPEG-1/2 video decoding */
56
    CODEC_ID_MPEG2VIDEO_XVMC,
57
    CODEC_ID_H261,
58
    CODEC_ID_H263,
59
    CODEC_ID_RV10,
60
    CODEC_ID_RV20,
61
    CODEC_ID_MJPEG,
62
    CODEC_ID_MJPEGB,
63
    CODEC_ID_LJPEG,
64
    CODEC_ID_SP5X,
65
    CODEC_ID_JPEGLS,
66
    CODEC_ID_MPEG4,
67
    CODEC_ID_RAWVIDEO,
68
    CODEC_ID_MSMPEG4V1,
69
    CODEC_ID_MSMPEG4V2,
70
    CODEC_ID_MSMPEG4V3,
71
    CODEC_ID_WMV1,
72
    CODEC_ID_WMV2,
73
    CODEC_ID_H263P,
74
    CODEC_ID_H263I,
75
    CODEC_ID_FLV1,
76
    CODEC_ID_SVQ1,
77
    CODEC_ID_SVQ3,
78
    CODEC_ID_DVVIDEO,
79
    CODEC_ID_HUFFYUV,
80
    CODEC_ID_CYUV,
81
    CODEC_ID_H264,
82
    CODEC_ID_INDEO3,
83
    CODEC_ID_VP3,
84
    CODEC_ID_THEORA,
85
    CODEC_ID_ASV1,
86
    CODEC_ID_ASV2,
87
    CODEC_ID_FFV1,
88
    CODEC_ID_4XM,
89
    CODEC_ID_VCR1,
90
    CODEC_ID_CLJR,
91
    CODEC_ID_MDEC,
92
    CODEC_ID_ROQ,
93
    CODEC_ID_INTERPLAY_VIDEO,
94
    CODEC_ID_XAN_WC3,
95
    CODEC_ID_XAN_WC4,
96
    CODEC_ID_RPZA,
97
    CODEC_ID_CINEPAK,
98
    CODEC_ID_WS_VQA,
99
    CODEC_ID_MSRLE,
100
    CODEC_ID_MSVIDEO1,
101
    CODEC_ID_IDCIN,
102
    CODEC_ID_8BPS,
103
    CODEC_ID_SMC,
104
    CODEC_ID_FLIC,
105
    CODEC_ID_TRUEMOTION1,
106
    CODEC_ID_VMDVIDEO,
107
    CODEC_ID_MSZH,
108
    CODEC_ID_ZLIB,
109
    CODEC_ID_QTRLE,
110
    CODEC_ID_SNOW,
111
    CODEC_ID_TSCC,
112
    CODEC_ID_ULTI,
113
    CODEC_ID_QDRAW,
114
    CODEC_ID_VIXL,
115
    CODEC_ID_QPEG,
116
    CODEC_ID_XVID,
117
    CODEC_ID_PNG,
118
    CODEC_ID_PPM,
119
    CODEC_ID_PBM,
120
    CODEC_ID_PGM,
121
    CODEC_ID_PGMYUV,
122
    CODEC_ID_PAM,
123
    CODEC_ID_FFVHUFF,
124
    CODEC_ID_RV30,
125
    CODEC_ID_RV40,
126
    CODEC_ID_VC1,
127
    CODEC_ID_WMV3,
128
    CODEC_ID_LOCO,
129
    CODEC_ID_WNV1,
130
    CODEC_ID_AASC,
131
    CODEC_ID_INDEO2,
132
    CODEC_ID_FRAPS,
133
    CODEC_ID_TRUEMOTION2,
134
    CODEC_ID_BMP,
135
    CODEC_ID_CSCD,
136
    CODEC_ID_MMVIDEO,
137
    CODEC_ID_ZMBV,
138
    CODEC_ID_AVS,
139
    CODEC_ID_SMACKVIDEO,
140
    CODEC_ID_NUV,
141
    CODEC_ID_KMVC,
142
    CODEC_ID_FLASHSV,
143
    CODEC_ID_CAVS,
144
    CODEC_ID_JPEG2000,
145
    CODEC_ID_VMNC,
146
    CODEC_ID_VP5,
147
    CODEC_ID_VP6,
148
    CODEC_ID_VP6F,
149
    CODEC_ID_TARGA,
150
    CODEC_ID_DSICINVIDEO,
151
    CODEC_ID_TIERTEXSEQVIDEO,
152
    CODEC_ID_TIFF,
153
    CODEC_ID_GIF,
154
    CODEC_ID_FFH264,
155
    CODEC_ID_DXA,
156
    CODEC_ID_DNXHD,
157
    CODEC_ID_THP,
158
    CODEC_ID_SGI,
159
    CODEC_ID_C93,
160
    CODEC_ID_BETHSOFTVID,
161
    CODEC_ID_PTX,
162
    CODEC_ID_TXD,
163

    
164
    /* various PCM "codecs" */
165
    CODEC_ID_PCM_S16LE= 0x10000,
166
    CODEC_ID_PCM_S16BE,
167
    CODEC_ID_PCM_U16LE,
168
    CODEC_ID_PCM_U16BE,
169
    CODEC_ID_PCM_S8,
170
    CODEC_ID_PCM_U8,
171
    CODEC_ID_PCM_MULAW,
172
    CODEC_ID_PCM_ALAW,
173
    CODEC_ID_PCM_S32LE,
174
    CODEC_ID_PCM_S32BE,
175
    CODEC_ID_PCM_U32LE,
176
    CODEC_ID_PCM_U32BE,
177
    CODEC_ID_PCM_S24LE,
178
    CODEC_ID_PCM_S24BE,
179
    CODEC_ID_PCM_U24LE,
180
    CODEC_ID_PCM_U24BE,
181
    CODEC_ID_PCM_S24DAUD,
182

    
183
    /* various ADPCM codecs */
184
    CODEC_ID_ADPCM_IMA_QT= 0x11000,
185
    CODEC_ID_ADPCM_IMA_WAV,
186
    CODEC_ID_ADPCM_IMA_DK3,
187
    CODEC_ID_ADPCM_IMA_DK4,
188
    CODEC_ID_ADPCM_IMA_WS,
189
    CODEC_ID_ADPCM_IMA_SMJPEG,
190
    CODEC_ID_ADPCM_MS,
191
    CODEC_ID_ADPCM_4XM,
192
    CODEC_ID_ADPCM_XA,
193
    CODEC_ID_ADPCM_ADX,
194
    CODEC_ID_ADPCM_EA,
195
    CODEC_ID_ADPCM_G726,
196
    CODEC_ID_ADPCM_CT,
197
    CODEC_ID_ADPCM_SWF,
198
    CODEC_ID_ADPCM_YAMAHA,
199
    CODEC_ID_ADPCM_SBPRO_4,
200
    CODEC_ID_ADPCM_SBPRO_3,
201
    CODEC_ID_ADPCM_SBPRO_2,
202
    CODEC_ID_ADPCM_THP,
203

    
204
    /* AMR */
205
    CODEC_ID_AMR_NB= 0x12000,
206
    CODEC_ID_AMR_WB,
207

    
208
    /* RealAudio codecs*/
209
    CODEC_ID_RA_144= 0x13000,
210
    CODEC_ID_RA_288,
211

    
212
    /* various DPCM codecs */
213
    CODEC_ID_ROQ_DPCM= 0x14000,
214
    CODEC_ID_INTERPLAY_DPCM,
215
    CODEC_ID_XAN_DPCM,
216
    CODEC_ID_SOL_DPCM,
217

    
218
    CODEC_ID_MP2= 0x15000,
219
    CODEC_ID_MP3, /* preferred ID for decoding MPEG audio layer 1, 2 or 3 */
220
    CODEC_ID_AAC,
221
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
222
    CODEC_ID_MPEG4AAC,
223
#endif
224
    CODEC_ID_AC3,
225
    CODEC_ID_DTS,
226
    CODEC_ID_VORBIS,
227
    CODEC_ID_DVAUDIO,
228
    CODEC_ID_WMAV1,
229
    CODEC_ID_WMAV2,
230
    CODEC_ID_MACE3,
231
    CODEC_ID_MACE6,
232
    CODEC_ID_VMDAUDIO,
233
    CODEC_ID_SONIC,
234
    CODEC_ID_SONIC_LS,
235
    CODEC_ID_FLAC,
236
    CODEC_ID_MP3ADU,
237
    CODEC_ID_MP3ON4,
238
    CODEC_ID_SHORTEN,
239
    CODEC_ID_ALAC,
240
    CODEC_ID_WESTWOOD_SND1,
241
    CODEC_ID_GSM, /* as in Berlin toast format */
242
    CODEC_ID_QDM2,
243
    CODEC_ID_COOK,
244
    CODEC_ID_TRUESPEECH,
245
    CODEC_ID_TTA,
246
    CODEC_ID_SMACKAUDIO,
247
    CODEC_ID_QCELP,
248
    CODEC_ID_WAVPACK,
249
    CODEC_ID_DSICINAUDIO,
250
    CODEC_ID_IMC,
251
    CODEC_ID_MUSEPACK7,
252
    CODEC_ID_MLP,
253
    CODEC_ID_GSM_MS, /* as found in WAV */
254
    CODEC_ID_ATRAC3,
255

    
256
    /* subtitle codecs */
257
    CODEC_ID_DVD_SUBTITLE= 0x17000,
258
    CODEC_ID_DVB_SUBTITLE,
259

    
260
    CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG-2 TS
261
                                * stream (only used by libavformat) */
262
};
263

    
264
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
265
/* CODEC_ID_MP3LAME is obsolete */
266
#define CODEC_ID_MP3LAME CODEC_ID_MP3
267
#define CODEC_ID_MPEG4AAC CODEC_ID_AAC
268
#endif
269

    
270
enum CodecType {
271
    CODEC_TYPE_UNKNOWN = -1,
272
    CODEC_TYPE_VIDEO,
273
    CODEC_TYPE_AUDIO,
274
    CODEC_TYPE_DATA,
275
    CODEC_TYPE_SUBTITLE,
276
    CODEC_TYPE_NB
277
};
278

    
279
/* Currently unused, may be used if 24/32 bits samples are ever supported. */
280
/* all in native-endian format */
281
enum SampleFormat {
282
    SAMPLE_FMT_NONE = -1,
283
    SAMPLE_FMT_U8,              ///< unsigned 8 bits
284
    SAMPLE_FMT_S16,             ///< signed 16 bits
285
    SAMPLE_FMT_S24,             ///< signed 24 bits
286
    SAMPLE_FMT_S32,             ///< signed 32 bits
287
    SAMPLE_FMT_FLT,             ///< float
288
};
289

    
290
/* in bytes */
291
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
292

    
293
/**
294
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
295
 * This is mainly needed because some optimized bitstream readers read
296
 * 32 or 64 bit at once and could read over the end.<br>
297
 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
298
 * MPEG bitstreams could cause overread and segfault.
299
 */
300
#define FF_INPUT_BUFFER_PADDING_SIZE 8
301

    
302
/**
303
 * minimum encoding buffer size
304
 * Used to avoid some checks during header writing.
305
 */
306
#define FF_MIN_BUFFER_SIZE 16384
307

    
308
/* motion estimation type, EPZS by default */
309
enum Motion_Est_ID {
310
    ME_ZERO = 1,
311
    ME_FULL,
312
    ME_LOG,
313
    ME_PHODS,
314
    ME_EPZS,
315
    ME_X1,
316
    ME_HEX,
317
    ME_UMH,
318
    ME_ITER,
319
};
320

    
321
enum AVDiscard{
322
    /* We leave some space between them for extensions (drop some
323
     * keyframes for intra-only or drop just some bidir frames). */
324
    AVDISCARD_NONE   =-16, ///< discard nothing
325
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
326
    AVDISCARD_NONREF =  8, ///< discard all non reference
327
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
328
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
329
    AVDISCARD_ALL    = 48, ///< discard all
330
};
331

    
332
typedef struct RcOverride{
333
    int start_frame;
334
    int end_frame;
335
    int qscale; // If this is 0 then quality_factor will be used instead.
336
    float quality_factor;
337
} RcOverride;
338

    
339
#define FF_MAX_B_FRAMES 16
340

    
341
/* encoding support
342
   These flags can be passed in AVCodecContext.flags before initialization.
343
   Note: Not everything is supported yet.
344
*/
345

    
346
#define CODEC_FLAG_QSCALE 0x0002  ///< Use fixed qscale.
347
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / advanced prediction for H.263.
348
#define CODEC_FLAG_QPEL   0x0010  ///< Use qpel MC.
349
#define CODEC_FLAG_GMC    0x0020  ///< Use GMC.
350
#define CODEC_FLAG_MV0    0x0040  ///< Always try a MB with MV=<0,0>.
351
#define CODEC_FLAG_PART   0x0080  ///< Use data partitioning.
352
/* The parent program guarantees that the input for B-frames containing
353
 * streams is not written to for at least s->max_b_frames+1 frames, if
354
 * this is not set the input will be copied. */
355
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
356
#define CODEC_FLAG_PASS1 0x0200   ///< Use internal 2pass ratecontrol in first pass mode.
357
#define CODEC_FLAG_PASS2 0x0400   ///< Use internal 2pass ratecontrol in second pass mode.
358
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG).
359
#define CODEC_FLAG_GRAY  0x2000   ///< Only decode/encode grayscale.
360
#define CODEC_FLAG_EMU_EDGE 0x4000///< Don't draw edges.
361
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding.
362
#define CODEC_FLAG_TRUNCATED  0x00010000 /** Input bitstream might be truncated at a random location instead
363
                                            of only at frame boundaries. */
364
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< Normalize adaptive quantization.
365
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
366
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< Force low delay.
367
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< Use alternate scan.
368
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< Use trellis quantization.
369
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< Place global headers in extradata instead of every keyframe.
370
#define CODEC_FLAG_BITEXACT       0x00800000 ///< Use only bitexact stuff (except (I)DCT).
371
/* Fx : Flag for h263+ extra options */
372
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
373
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction (remove this)
374
#endif
375
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
376
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< unlimited motion vector
377
#define CODEC_FLAG_CBP_RD         0x04000000 ///< Use rate distortion optimization for cbp.
378
#define CODEC_FLAG_QP_RD          0x08000000 ///< Use rate distortion optimization for qp selectioon.
379
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H.263 alternative inter VLC
380
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
381
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
382
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
383
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
384
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
385
#define CODEC_FLAG_CLOSED_GOP     ((int)0x80000000)
386
#define CODEC_FLAG2_FAST          0x00000001 ///< Allow non spec compliant speedup tricks.
387
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< Strictly enforce GOP size.
388
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< Skip bitstream encoding.
389
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< Place global headers at every keyframe instead of in extradata.
390
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow B-frames to be used as references.
391
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for B-frames
392
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
393
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
394
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
395
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
396
#define CODEC_FLAG2_BRDO          0x00000400 ///< B-frame rate-distortion optimization
397
#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< Use MPEG-2 intra VLC table.
398
#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
399
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
400
#define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skipping
401
#define CODEC_FLAG2_CHUNKS        0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
402
#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
403

    
404
/* Unsupported options :
405
 *              Syntax Arithmetic coding (SAC)
406
 *              Reference Picture Selection
407
 *              Independent Segment Decoding */
408
/* /Fx */
409
/* codec capabilities */
410

    
411
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
412
/**
413
 * Codec uses get_buffer() for allocating buffers.
414
 * direct rendering method 1
415
 */
416
#define CODEC_CAP_DR1             0x0002
417
/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
418
#define CODEC_CAP_PARSE_ONLY      0x0004
419
#define CODEC_CAP_TRUNCATED       0x0008
420
/* Codec can export data for HW decoding (XvMC). */
421
#define CODEC_CAP_HWACCEL         0x0010
422
/**
423
 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
424
 * If this is not set, the codec is guaranteed to never be fed with NULL data.
425
 */
426
#define CODEC_CAP_DELAY           0x0020
427
/**
428
 * Codec can be fed a final frame with a smaller size.
429
 * This can be used to prevent truncation of the last audio samples.
430
 */
431
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
432

    
433
//The following defines may change, don't expect compatibility if you use them.
434
#define MB_TYPE_INTRA4x4   0x0001
435
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
436
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME H.264-specific
437
#define MB_TYPE_16x16      0x0008
438
#define MB_TYPE_16x8       0x0010
439
#define MB_TYPE_8x16       0x0020
440
#define MB_TYPE_8x8        0x0040
441
#define MB_TYPE_INTERLACED 0x0080
442
#define MB_TYPE_DIRECT2     0x0100 //FIXME
443
#define MB_TYPE_ACPRED     0x0200
444
#define MB_TYPE_GMC        0x0400
445
#define MB_TYPE_SKIP       0x0800
446
#define MB_TYPE_P0L0       0x1000
447
#define MB_TYPE_P1L0       0x2000
448
#define MB_TYPE_P0L1       0x4000
449
#define MB_TYPE_P1L1       0x8000
450
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
451
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
452
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
453
#define MB_TYPE_QUANT      0x00010000
454
#define MB_TYPE_CBP        0x00020000
455
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
456

    
457
/**
458
 * Pan Scan area.
459
 * This specifies the area which should be displayed.
460
 * Note there may be multiple such areas for one frame.
461
 */
462
typedef struct AVPanScan{
463
    /**
464
     * id
465
     * - encoding: Set by user.
466
     * - decoding: Set by libavcodec.
467
     */
468
    int id;
469

    
470
    /**
471
     * width and height in 1/16 pel
472
     * - encoding: Set by user.
473
     * - decoding: Set by libavcodec.
474
     */
475
    int width;
476
    int height;
477

    
478
    /**
479
     * position of the top left corner in 1/16 pel for up to 3 fields/frames
480
     * - encoding: Set by user.
481
     * - decoding: Set by libavcodec.
482
     */
483
    int16_t position[3][2];
484
}AVPanScan;
485

    
486
#define FF_COMMON_FRAME \
487
    /**\
488
     * pointer to the picture planes.\
489
     * This might be different from the first allocated byte\
490
     * - encoding: \
491
     * - decoding: \
492
     */\
493
    uint8_t *data[4];\
494
    int linesize[4];\
495
    /**\
496
     * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
497
     * This isn't used by libavcodec unless the default get/release_buffer() is used.\
498
     * - encoding: \
499
     * - decoding: \
500
     */\
501
    uint8_t *base[4];\
502
    /**\
503
     * 1 -> keyframe, 0-> not\
504
     * - encoding: Set by libavcodec.\
505
     * - decoding: Set by libavcodec.\
506
     */\
507
    int key_frame;\
508
\
509
    /**\
510
     * Picture type of the frame, see ?_TYPE below.\
511
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
512
     * - decoding: Set by libavcodec.\
513
     */\
514
    int pict_type;\
515
\
516
    /**\
517
     * presentation timestamp in time_base units (time when frame should be shown to user)\
518
     * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
519
     * - encoding: MUST be set by user.\
520
     * - decoding: Set by libavcodec.\
521
     */\
522
    int64_t pts;\
523
\
524
    /**\
525
     * picture number in bitstream order\
526
     * - encoding: set by\
527
     * - decoding: Set by libavcodec.\
528
     */\
529
    int coded_picture_number;\
530
    /**\
531
     * picture number in display order\
532
     * - encoding: set by\
533
     * - decoding: Set by libavcodec.\
534
     */\
535
    int display_picture_number;\
536
\
537
    /**\
538
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
539
     * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
540
     * - decoding: Set by libavcodec.\
541
     */\
542
    int quality; \
543
\
544
    /**\
545
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
546
     * Set to INT_MAX if the buffer has not been used yet.\
547
     * - encoding: unused\
548
     * - decoding: MUST be set by get_buffer().\
549
     */\
550
    int age;\
551
\
552
    /**\
553
     * is this picture used as reference\
554
     * - encoding: unused\
555
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
556
     */\
557
    int reference;\
558
\
559
    /**\
560
     * QP table\
561
     * - encoding: unused\
562
     * - decoding: Set by libavcodec.\
563
     */\
564
    int8_t *qscale_table;\
565
    /**\
566
     * QP store stride\
567
     * - encoding: unused\
568
     * - decoding: Set by libavcodec.\
569
     */\
570
    int qstride;\
571
\
572
    /**\
573
     * mbskip_table[mb]>=1 if MB didn't change\
574
     * stride= mb_width = (width+15)>>4\
575
     * - encoding: unused\
576
     * - decoding: Set by libavcodec.\
577
     */\
578
    uint8_t *mbskip_table;\
579
\
580
    /**\
581
     * motion vector table\
582
     * @code\
583
     * example:\
584
     * int mv_sample_log2= 4 - motion_subsample_log2;\
585
     * int mb_width= (width+15)>>4;\
586
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
587
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
588
     * @endcode\
589
     * - encoding: Set by user.\
590
     * - decoding: Set by libavcodec.\
591
     */\
592
    int16_t (*motion_val[2])[2];\
593
\
594
    /**\
595
     * macroblock type table\
596
     * mb_type_base + mb_width + 2\
597
     * - encoding: Set by user.\
598
     * - decoding: Set by libavcodec.\
599
     */\
600
    uint32_t *mb_type;\
601
\
602
    /**\
603
     * log2 of the size of the block which a single vector in motion_val represents: \
604
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
605
     * - encoding: unused\
606
     * - decoding: Set by libavcodec.\
607
     */\
608
    uint8_t motion_subsample_log2;\
609
\
610
    /**\
611
     * for some private data of the user\
612
     * - encoding: unused\
613
     * - decoding: Set by user.\
614
     */\
615
    void *opaque;\
616
\
617
    /**\
618
     * error\
619
     * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
620
     * - decoding: unused\
621
     */\
622
    uint64_t error[4];\
623
\
624
    /**\
625
     * type of the buffer (to keep track of who has to deallocate data[*])\
626
     * - encoding: Set by the one who allocates it.\
627
     * - decoding: Set by the one who allocates it.\
628
     * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
629
     */\
630
    int type;\
631
    \
632
    /**\
633
     * When decoding, this signals how much the picture must be delayed.\
634
     * extra_delay = repeat_pict / (2*fps)\
635
     * - encoding: unused\
636
     * - decoding: Set by libavcodec.\
637
     */\
638
    int repeat_pict;\
639
    \
640
    /**\
641
     * \
642
     */\
643
    int qscale_type;\
644
    \
645
    /**\
646
     * The content of the picture is interlaced.\
647
     * - encoding: Set by user.\
648
     * - decoding: Set by libavcodec. (default 0)\
649
     */\
650
    int interlaced_frame;\
651
    \
652
    /**\
653
     * If the content is interlaced, is top field displayed first.\
654
     * - encoding: Set by user.\
655
     * - decoding: Set by libavcodec.\
656
     */\
657
    int top_field_first;\
658
    \
659
    /**\
660
     * Pan scan.\
661
     * - encoding: Set by user.\
662
     * - decoding: Set by libavcodec.\
663
     */\
664
    AVPanScan *pan_scan;\
665
    \
666
    /**\
667
     * Tell user application that palette has changed from previous frame.\
668
     * - encoding: ??? (no palette-enabled encoder yet)\
669
     * - decoding: Set by libavcodec. (default 0).\
670
     */\
671
    int palette_has_changed;\
672
    \
673
    /**\
674
     * codec suggestion on buffer type if != 0\
675
     * - encoding: unused\
676
     * - decoding: Set by libavcodec. (before get_buffer() call)).\
677
     */\
678
    int buffer_hints;\
679
\
680
    /**\
681
     * DCT coefficients\
682
     * - encoding: unused\
683
     * - decoding: Set by libavcodec.\
684
     */\
685
    short *dct_coeff;\
686
\
687
    /**\
688
     * motion referece frame index\
689
     * - encoding: Set by user.\
690
     * - decoding: Set by libavcodec.\
691
     */\
692
    int8_t *ref_index[2];
693

    
694
#define FF_QSCALE_TYPE_MPEG1 0
695
#define FF_QSCALE_TYPE_MPEG2 1
696
#define FF_QSCALE_TYPE_H264  2
697

    
698
#define FF_BUFFER_TYPE_INTERNAL 1
699
#define FF_BUFFER_TYPE_USER     2 ///< direct rendering buffers (image is (de)allocated by user)
700
#define FF_BUFFER_TYPE_SHARED   4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
701
#define FF_BUFFER_TYPE_COPY     8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
702

    
703

    
704
#define FF_I_TYPE 1 // Intra
705
#define FF_P_TYPE 2 // Predicted
706
#define FF_B_TYPE 3 // Bi-dir predicted
707
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
708
#define FF_SI_TYPE 5
709
#define FF_SP_TYPE 6
710

    
711
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore).
712
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
713
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
714
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
715

    
716
/**
717
 * Audio Video Frame.
718
 */
719
typedef struct AVFrame {
720
    FF_COMMON_FRAME
721
} AVFrame;
722

    
723
#define DEFAULT_FRAME_RATE_BASE 1001000
724

    
725
/**
726
 * main external API structure
727
 */
728
typedef struct AVCodecContext {
729
    /**
730
     * information on struct for av_log
731
     * - set by avcodec_alloc_context
732
     */
733
    AVClass *av_class;
734
    /**
735
     * the average bitrate
736
     * - encoding: Set by user; unused for constant quantizer encoding.
737
     * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
738
     */
739
    int bit_rate;
740

    
741
    /**
742
     * number of bits the bitstream is allowed to diverge from the reference.
743
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
744
     * - encoding: Set by user; unused for constant quantizer encoding.
745
     * - decoding: unused
746
     */
747
    int bit_rate_tolerance;
748

    
749
    /**
750
     * CODEC_FLAG_*.
751
     * - encoding: Set by user.
752
     * - decoding: Set by user.
753
     */
754
    int flags;
755

    
756
    /**
757
     * Some codecs need additional format info. It is stored here.
758
     * If any muxer uses this then ALL demuxers/parsers AND encoders for the
759
     * specific codec MUST set it correctly otherwise stream copy breaks.
760
     * In general use of this field by muxers is not recommanded.
761
     * - encoding: Set by libavcodec.
762
     * - decoding: Set by libavcodec. (FIXME: Is this OK?)
763
     */
764
    int sub_id;
765

    
766
    /**
767
     * Motion estimation algorithm used for video coding.
768
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
769
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
770
     * - encoding: MUST be set by user.
771
     * - decoding: unused
772
     */
773
    int me_method;
774

    
775
    /**
776
     * some codecs need / can use extradata like Huffman tables.
777
     * mjpeg: Huffman tables
778
     * rv10: additional flags
779
     * mpeg4: global headers (they can be in the bitstream or here)
780
     * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
781
     * than extradata_size to avoid prolems if it is read with the bitstream reader.
782
     * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
783
     * - encoding: Set/allocated/freed by libavcodec.
784
     * - decoding: Set/allocated/freed by user.
785
     */
786
    uint8_t *extradata;
787
    int extradata_size;
788

    
789
    /**
790
     * This is the fundamental unit of time (in seconds) in terms
791
     * of which frame timestamps are represented. For fixed-fps content,
792
     * timebase should be 1/framerate and timestamp increments should be
793
     * identically 1.
794
     * - encoding: MUST be set by user.
795
     * - decoding: Set by libavcodec.
796
     */
797
    AVRational time_base;
798

    
799
    /* video only */
800
    /**
801
     * picture width / height.
802
     * - encoding: MUST be set by user.
803
     * - decoding: Set by libavcodec.
804
     * Note: For compatibility it is possible to set this instead of
805
     * coded_width/height before decoding.
806
     */
807
    int width, height;
808

    
809
#define FF_ASPECT_EXTENDED 15
810

    
811
    /**
812
     * the number of pictures in a group of pictures, or 0 for intra_only
813
     * - encoding: Set by user.
814
     * - decoding: unused
815
     */
816
    int gop_size;
817

    
818
    /**
819
     * Pixel format, see PIX_FMT_xxx.
820
     * - encoding: Set by user.
821
     * - decoding: Set by libavcodec.
822
     */
823
    enum PixelFormat pix_fmt;
824

    
825
    /**
826
     * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
827
     * has to read frames at native frame rate.
828
     * - encoding: Set by user.
829
     * - decoding: unused
830
     */
831
    int rate_emu;
832

    
833
    /**
834
     * If non NULL, 'draw_horiz_band' is called by the libavcodec
835
     * decoder to draw a horizontal band. It improves cache usage. Not
836
     * all codecs can do that. You must check the codec capabilities
837
     * beforehand.
838
     * - encoding: unused
839
     * - decoding: Set by user.
840
     * @param height the height of the slice
841
     * @param y the y position of the slice
842
     * @param type 1->top field, 2->bottom field, 3->frame
843
     * @param offset offset into the AVFrame.data from which the slice should be read
844
     */
845
    void (*draw_horiz_band)(struct AVCodecContext *s,
846
                            const AVFrame *src, int offset[4],
847
                            int y, int type, int height);
848

    
849
    /* audio only */
850
    int sample_rate; ///< samples per second
851
    int channels;
852

    
853
    /**
854
     * audio sample format
855
     * - encoding: Set by user.
856
     * - decoding: Set by libavcodec.
857
     */
858
    enum SampleFormat sample_fmt;  ///< sample format, currently unused
859

    
860
    /* The following data should not be initialized. */
861
    /**
862
     * Samples per packet, initialized when calling 'init'.
863
     */
864
    int frame_size;
865
    int frame_number;   ///< audio or video frame number
866
    int real_pict_num;  ///< Returns the real picture number of previous encoded frame.
867

    
868
    /**
869
     * Number of frames the decoded output will be delayed relative to
870
     * the encoded input.
871
     * - encoding: Set by libavcodec.
872
     * - decoding: unused
873
     */
874
    int delay;
875

    
876
    /* - encoding parameters */
877
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
878
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
879

    
880
    /**
881
     * minimum quantizer
882
     * - encoding: Set by user.
883
     * - decoding: unused
884
     */
885
    int qmin;
886

    
887
    /**
888
     * maximum quantizer
889
     * - encoding: Set by user.
890
     * - decoding: unused
891
     */
892
    int qmax;
893

    
894
    /**
895
     * maximum quantizer difference between frames
896
     * - encoding: Set by user.
897
     * - decoding: unused
898
     */
899
    int max_qdiff;
900

    
901
    /**
902
     * maximum number of B-frames between non-B-frames
903
     * Note: The output will be delayed by max_b_frames+1 relative to the input.
904
     * - encoding: Set by user.
905
     * - decoding: unused
906
     */
907
    int max_b_frames;
908

    
909
    /**
910
     * qscale factor between IP and B-frames
911
     * - encoding: Set by user.
912
     * - decoding: unused
913
     */
914
    float b_quant_factor;
915

    
916
    /** obsolete FIXME remove */
917
    int rc_strategy;
918
#define FF_RC_STRATEGY_XVID 1
919

    
920
    int b_frame_strategy;
921

    
922
    /**
923
     * hurry up amount
924
     * - encoding: unused
925
     * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
926
     * @deprecated Deprecated in favor of skip_idct and skip_frame.
927
     */
928
    int hurry_up;
929

    
930
    struct AVCodec *codec;
931

    
932
    void *priv_data;
933

    
934
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
935
    /* unused, FIXME remove*/
936
    int rtp_mode;
937
#endif
938

    
939
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
940
                            /* do its best to deliver a chunk with size     */
941
                            /* below rtp_payload_size, the chunk will start */
942
                            /* with a start code on some codecs like H.263. */
943
                            /* This doesn't take account of any particular  */
944
                            /* headers inside the transmitted RTP payload.  */
945

    
946

    
947
    /* The RTP callback: This function is called    */
948
    /* every time the encoder has a packet to send. */
949
    /* It depends on the encoder if the data starts */
950
    /* with a Start Code (it should). H.263 does.   */
951
    /* mb_nb contains the number of macroblocks     */
952
    /* encoded in the RTP payload.                  */
953
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
954

    
955
    /* statistics, used for 2-pass encoding */
956
    int mv_bits;
957
    int header_bits;
958
    int i_tex_bits;
959
    int p_tex_bits;
960
    int i_count;
961
    int p_count;
962
    int skip_count;
963
    int misc_bits;
964

    
965
    /**
966
     * number of bits used for the previously encoded frame
967
     * - encoding: Set by libavcodec.
968
     * - decoding: unused
969
     */
970
    int frame_bits;
971

    
972
    /**
973
     * Private data of the user, can be used to carry app specific stuff.
974
     * - encoding: Set by user.
975
     * - decoding: Set by user.
976
     */
977
    void *opaque;
978

    
979
    char codec_name[32];
980
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
981
    enum CodecID codec_id; /* see CODEC_ID_xxx */
982

    
983
    /**
984
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
985
     * This is used to work around some encoder bugs.
986
     * A demuxer should set this to what is stored in the field used to identify the codec.
987
     * If there are multiple such fields in a container then the demuxer should choose the one
988
     * which maximizes the information about the used codec.
989
     * If the codec tag field in a container is larger then 32 bits then the demuxer should
990
     * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
991
     * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
992
     * first.
993
     * - encoding: Set by user, if not then the default based on codec_id will be used.
994
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
995
     */
996
    unsigned int codec_tag;
997

    
998
    /**
999
     * Work around bugs in encoders which sometimes cannot be detected automatically.
1000
     * - encoding: Set by user
1001
     * - decoding: Set by user
1002
     */
1003
    int workaround_bugs;
1004
#define FF_BUG_AUTODETECT       1  ///< autodetection
1005
#define FF_BUG_OLD_MSMPEG4      2
1006
#define FF_BUG_XVID_ILACE       4
1007
#define FF_BUG_UMP4             8
1008
#define FF_BUG_NO_PADDING       16
1009
#define FF_BUG_AMV              32
1010
#define FF_BUG_AC_VLC           0  ///< Will be removed, libavcodec can now handle these non-compliant files by default.
1011
#define FF_BUG_QPEL_CHROMA      64
1012
#define FF_BUG_STD_QPEL         128
1013
#define FF_BUG_QPEL_CHROMA2     256
1014
#define FF_BUG_DIRECT_BLOCKSIZE 512
1015
#define FF_BUG_EDGE             1024
1016
#define FF_BUG_HPEL_CHROMA      2048
1017
#define FF_BUG_DC_CLIP          4096
1018
#define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
1019
//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
1020

    
1021
    /**
1022
     * luma single coefficient elimination threshold
1023
     * - encoding: Set by user.
1024
     * - decoding: unused
1025
     */
1026
    int luma_elim_threshold;
1027

    
1028
    /**
1029
     * chroma single coeff elimination threshold
1030
     * - encoding: Set by user.
1031
     * - decoding: unused
1032
     */
1033
    int chroma_elim_threshold;
1034

    
1035
    /**
1036
     * strictly follow the standard (MPEG4, ...).
1037
     * - encoding: Set by user.
1038
     * - decoding: unused
1039
     */
1040
    int strict_std_compliance;
1041
#define FF_COMPLIANCE_VERY_STRICT   2 ///< Strictly conform to a older more strict version of the spec or reference software.
1042
#define FF_COMPLIANCE_STRICT        1 ///< Strictly conform to all the things in the spec no matter what consequences.
1043
#define FF_COMPLIANCE_NORMAL        0
1044
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< Allow inofficial extensions.
1045
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
1046

    
1047
    /**
1048
     * qscale offset between IP and B-frames
1049
     * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1050
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1051
     * - encoding: Set by user.
1052
     * - decoding: unused
1053
     */
1054
    float b_quant_offset;
1055

    
1056
    /**
1057
     * Error resilience; higher values will detect more errors but may
1058
     * misdetect some more or less valid parts as errors.
1059
     * - encoding: unused
1060
     * - decoding: Set by user.
1061
     */
1062
    int error_resilience;
1063
#define FF_ER_CAREFUL         1
1064
#define FF_ER_COMPLIANT       2
1065
#define FF_ER_AGGRESSIVE      3
1066
#define FF_ER_VERY_AGGRESSIVE 4
1067

    
1068
    /**
1069
     * Called at the beginning of each frame to get a buffer for it.
1070
     * If pic.reference is set then the frame will be read later by libavcodec.
1071
     * avcodec_align_dimensions() should be used to find the required width and
1072
     * height, as they normally need to be rounded up to the next multiple of 16.
1073
     * - encoding: unused
1074
     * - decoding: Set by libavcodec., user can override.
1075
     */
1076
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1077

    
1078
    /**
1079
     * Called to release buffers which where allocated with get_buffer.
1080
     * A released buffer can be reused in get_buffer().
1081
     * pic.data[*] must be set to NULL.
1082
     * - encoding: unused
1083
     * - decoding: Set by libavcodec., user can override.
1084
     */
1085
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1086

    
1087
    /**
1088
     * If 1 the stream has a 1 frame delay during decoding.
1089
     * - encoding: Set by libavcodec.
1090
     * - decoding: Set by libavcodec.
1091
     */
1092
    int has_b_frames;
1093

    
1094
    /**
1095
     * number of bytes per packet if constant and known or 0
1096
     * Used by some WAV based audio codecs.
1097
     */
1098
    int block_align;
1099

    
1100
    int parse_only; /* - decoding only: If true, only parsing is done
1101
                       (function avcodec_parse_frame()). The frame
1102
                       data is returned. Only MPEG codecs support this now. */
1103

    
1104
    /**
1105
     * 0-> h263 quant 1-> mpeg quant
1106
     * - encoding: Set by user.
1107
     * - decoding: unused
1108
     */
1109
    int mpeg_quant;
1110

    
1111
    /**
1112
     * pass1 encoding statistics output buffer
1113
     * - encoding: Set by libavcodec.
1114
     * - decoding: unused
1115
     */
1116
    char *stats_out;
1117

    
1118
    /**
1119
     * pass2 encoding statistics input buffer
1120
     * Concatenated stuff from stats_out of pass1 should be placed here.
1121
     * - encoding: Allocated/set/freed by user.
1122
     * - decoding: unused
1123
     */
1124
    char *stats_in;
1125

    
1126
    /**
1127
     * ratecontrol qmin qmax limiting method
1128
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1129
     * - encoding: Set by user.
1130
     * - decoding: unused
1131
     */
1132
    float rc_qsquish;
1133

    
1134
    float rc_qmod_amp;
1135
    int rc_qmod_freq;
1136

    
1137
    /**
1138
     * ratecontrol override, see RcOverride
1139
     * - encoding: Allocated/set/freed by user.
1140
     * - decoding: unused
1141
     */
1142
    RcOverride *rc_override;
1143
    int rc_override_count;
1144

    
1145
    /**
1146
     * rate control equation
1147
     * - encoding: Set by user
1148
     * - decoding: unused
1149
     */
1150
    char *rc_eq;
1151

    
1152
    /**
1153
     * maximum bitrate
1154
     * - encoding: Set by user.
1155
     * - decoding: unused
1156
     */
1157
    int rc_max_rate;
1158

    
1159
    /**
1160
     * minimum bitrate
1161
     * - encoding: Set by user.
1162
     * - decoding: unused
1163
     */
1164
    int rc_min_rate;
1165

    
1166
    /**
1167
     * decoder bitstream buffer size
1168
     * - encoding: Set by user.
1169
     * - decoding: unused
1170
     */
1171
    int rc_buffer_size;
1172
    float rc_buffer_aggressivity;
1173

    
1174
    /**
1175
     * qscale factor between P and I-frames
1176
     * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1177
     * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1178
     * - encoding: Set by user.
1179
     * - decoding: unused
1180
     */
1181
    float i_quant_factor;
1182

    
1183
    /**
1184
     * qscale offset between P and I-frames
1185
     * - encoding: Set by user.
1186
     * - decoding: unused
1187
     */
1188
    float i_quant_offset;
1189

    
1190
    /**
1191
     * initial complexity for pass1 ratecontrol
1192
     * - encoding: Set by user.
1193
     * - decoding: unused
1194
     */
1195
    float rc_initial_cplx;
1196

    
1197
    /**
1198
     * DCT algorithm, see FF_DCT_* below
1199
     * - encoding: Set by user.
1200
     * - decoding: unused
1201
     */
1202
    int dct_algo;
1203
#define FF_DCT_AUTO    0
1204
#define FF_DCT_FASTINT 1
1205
#define FF_DCT_INT     2
1206
#define FF_DCT_MMX     3
1207
#define FF_DCT_MLIB    4
1208
#define FF_DCT_ALTIVEC 5
1209
#define FF_DCT_FAAN    6
1210

    
1211
    /**
1212
     * luminance masking (0-> disabled)
1213
     * - encoding: Set by user.
1214
     * - decoding: unused
1215
     */
1216
    float lumi_masking;
1217

    
1218
    /**
1219
     * temporary complexity masking (0-> disabled)
1220
     * - encoding: Set by user.
1221
     * - decoding: unused
1222
     */
1223
    float temporal_cplx_masking;
1224

    
1225
    /**
1226
     * spatial complexity masking (0-> disabled)
1227
     * - encoding: Set by user.
1228
     * - decoding: unused
1229
     */
1230
    float spatial_cplx_masking;
1231

    
1232
    /**
1233
     * p block masking (0-> disabled)
1234
     * - encoding: Set by user.
1235
     * - decoding: unused
1236
     */
1237
    float p_masking;
1238

    
1239
    /**
1240
     * darkness masking (0-> disabled)
1241
     * - encoding: Set by user.
1242
     * - decoding: unused
1243
     */
1244
    float dark_masking;
1245

    
1246

    
1247
    /* for binary compatibility */
1248
    int unused;
1249

    
1250
    /**
1251
     * IDCT algorithm, see FF_IDCT_* below.
1252
     * - encoding: Set by user.
1253
     * - decoding: Set by user.
1254
     */
1255
    int idct_algo;
1256
#define FF_IDCT_AUTO         0
1257
#define FF_IDCT_INT          1
1258
#define FF_IDCT_SIMPLE       2
1259
#define FF_IDCT_SIMPLEMMX    3
1260
#define FF_IDCT_LIBMPEG2MMX  4
1261
#define FF_IDCT_PS2          5
1262
#define FF_IDCT_MLIB         6
1263
#define FF_IDCT_ARM          7
1264
#define FF_IDCT_ALTIVEC      8
1265
#define FF_IDCT_SH4          9
1266
#define FF_IDCT_SIMPLEARM    10
1267
#define FF_IDCT_H264         11
1268
#define FF_IDCT_VP3          12
1269
#define FF_IDCT_IPP          13
1270
#define FF_IDCT_XVIDMMX      14
1271
#define FF_IDCT_CAVS         15
1272
#define FF_IDCT_SIMPLEARMV5TE 16
1273
#define FF_IDCT_SIMPLEARMV6  17
1274

    
1275
    /**
1276
     * slice count
1277
     * - encoding: Set by libavcodec.
1278
     * - decoding: Set by user (or 0).
1279
     */
1280
    int slice_count;
1281
    /**
1282
     * slice offsets in the frame in bytes
1283
     * - encoding: Set/allocated by libavcodec.
1284
     * - decoding: Set/allocated by user (or NULL).
1285
     */
1286
    int *slice_offset;
1287

    
1288
    /**
1289
     * error concealment flags
1290
     * - encoding: unused
1291
     * - decoding: Set by user.
1292
     */
1293
    int error_concealment;
1294
#define FF_EC_GUESS_MVS   1
1295
#define FF_EC_DEBLOCK     2
1296

    
1297
    /**
1298
     * dsp_mask could be add used to disable unwanted CPU features
1299
     * CPU features (i.e. MMX, SSE. ...)
1300
     *
1301
     * With the FORCE flag you may instead enable given CPU features.
1302
     * (Dangerous: Usable in case of misdetection, improper usage however will
1303
     * result into program crash.)
1304
     */
1305
    unsigned dsp_mask;
1306
#define FF_MM_FORCE    0x80000000 /* Force usage of selected flags (OR) */
1307
    /* lower 16 bits - CPU features */
1308
#ifdef HAVE_MMX
1309
#define FF_MM_MMX      0x0001 /* standard MMX */
1310
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1311
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1312
#define FF_MM_SSE      0x0008 /* SSE functions */
1313
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1314
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1315
#endif /* HAVE_MMX */
1316
#ifdef HAVE_IWMMXT
1317
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1318
#endif /* HAVE_IWMMXT */
1319

    
1320
    /**
1321
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1322
     * - encoding: Set by libavcodec.
1323
     * - decoding: Set by user.
1324
     */
1325
     int bits_per_sample;
1326

    
1327
    /**
1328
     * prediction method (needed for huffyuv)
1329
     * - encoding: Set by user.
1330
     * - decoding: unused
1331
     */
1332
     int prediction_method;
1333
#define FF_PRED_LEFT   0
1334
#define FF_PRED_PLANE  1
1335
#define FF_PRED_MEDIAN 2
1336

    
1337
    /**
1338
     * sample aspect ratio (0 if unknown)
1339
     * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1340
     * - encoding: Set by user.
1341
     * - decoding: Set by libavcodec.
1342
     */
1343
    AVRational sample_aspect_ratio;
1344

    
1345
    /**
1346
     * the picture in the bitstream
1347
     * - encoding: Set by libavcodec.
1348
     * - decoding: Set by libavcodec.
1349
     */
1350
    AVFrame *coded_frame;
1351

    
1352
    /**
1353
     * debug
1354
     * - encoding: Set by user.
1355
     * - decoding: Set by user.
1356
     */
1357
    int debug;
1358
#define FF_DEBUG_PICT_INFO 1
1359
#define FF_DEBUG_RC        2
1360
#define FF_DEBUG_BITSTREAM 4
1361
#define FF_DEBUG_MB_TYPE   8
1362
#define FF_DEBUG_QP        16
1363
#define FF_DEBUG_MV        32
1364
#define FF_DEBUG_DCT_COEFF 0x00000040
1365
#define FF_DEBUG_SKIP      0x00000080
1366
#define FF_DEBUG_STARTCODE 0x00000100
1367
#define FF_DEBUG_PTS       0x00000200
1368
#define FF_DEBUG_ER        0x00000400
1369
#define FF_DEBUG_MMCO      0x00000800
1370
#define FF_DEBUG_BUGS      0x00001000
1371
#define FF_DEBUG_VIS_QP    0x00002000
1372
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1373

    
1374
    /**
1375
     * debug
1376
     * - encoding: Set by user.
1377
     * - decoding: Set by user.
1378
     */
1379
    int debug_mv;
1380
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1381
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1382
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1383

    
1384
    /**
1385
     * error
1386
     * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
1387
     * - decoding: unused
1388
     */
1389
    uint64_t error[4];
1390

    
1391
    /**
1392
     * minimum MB quantizer
1393
     * - encoding: unused
1394
     * - decoding: unused
1395
     */
1396
    int mb_qmin;
1397

    
1398
    /**
1399
     * maximum MB quantizer
1400
     * - encoding: unused
1401
     * - decoding: unused
1402
     */
1403
    int mb_qmax;
1404

    
1405
    /**
1406
     * motion estimation comparison function
1407
     * - encoding: Set by user.
1408
     * - decoding: unused
1409
     */
1410
    int me_cmp;
1411
    /**
1412
     * subpixel motion estimation comparison function
1413
     * - encoding: Set by user.
1414
     * - decoding: unused
1415
     */
1416
    int me_sub_cmp;
1417
    /**
1418
     * macroblock comparison function (not supported yet)
1419
     * - encoding: Set by user.
1420
     * - decoding: unused
1421
     */
1422
    int mb_cmp;
1423
    /**
1424
     * interlaced DCT comparison function
1425
     * - encoding: Set by user.
1426
     * - decoding: unused
1427
     */
1428
    int ildct_cmp;
1429
#define FF_CMP_SAD  0
1430
#define FF_CMP_SSE  1
1431
#define FF_CMP_SATD 2
1432
#define FF_CMP_DCT  3
1433
#define FF_CMP_PSNR 4
1434
#define FF_CMP_BIT  5
1435
#define FF_CMP_RD   6
1436
#define FF_CMP_ZERO 7
1437
#define FF_CMP_VSAD 8
1438
#define FF_CMP_VSSE 9
1439
#define FF_CMP_NSSE 10
1440
#define FF_CMP_W53  11
1441
#define FF_CMP_W97  12
1442
#define FF_CMP_DCTMAX 13
1443
#define FF_CMP_DCT264 14
1444
#define FF_CMP_CHROMA 256
1445

    
1446
    /**
1447
     * ME diamond size & shape
1448
     * - encoding: Set by user.
1449
     * - decoding: unused
1450
     */
1451
    int dia_size;
1452

    
1453
    /**
1454
     * amount of previous MV predictors (2a+1 x 2a+1 square)
1455
     * - encoding: Set by user.
1456
     * - decoding: unused
1457
     */
1458
    int last_predictor_count;
1459

    
1460
    /**
1461
     * prepass for motion estimation
1462
     * - encoding: Set by user.
1463
     * - decoding: unused
1464
     */
1465
    int pre_me;
1466

    
1467
    /**
1468
     * motion estimation prepass comparison function
1469
     * - encoding: Set by user.
1470
     * - decoding: unused
1471
     */
1472
    int me_pre_cmp;
1473

    
1474
    /**
1475
     * ME prepass diamond size & shape
1476
     * - encoding: Set by user.
1477
     * - decoding: unused
1478
     */
1479
    int pre_dia_size;
1480

    
1481
    /**
1482
     * subpel ME quality
1483
     * - encoding: Set by user.
1484
     * - decoding: unused
1485
     */
1486
    int me_subpel_quality;
1487

    
1488
    /**
1489
     * callback to negotiate the pixelFormat
1490
     * @param fmt is the list of formats which are supported by the codec,
1491
     * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1492
     * The first is always the native one.
1493
     * @return the chosen format
1494
     * - encoding: unused
1495
     * - decoding: Set by user, if not set the native format will be chosen.
1496
     */
1497
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1498

    
1499
    /**
1500
     * DTG active format information (additional aspect ratio
1501
     * information only used in DVB MPEG-2 transport streams)
1502
     * 0 if not set.
1503
     *
1504
     * - encoding: unused
1505
     * - decoding: Set by decoder.
1506
     */
1507
    int dtg_active_format;
1508
#define FF_DTG_AFD_SAME         8
1509
#define FF_DTG_AFD_4_3          9
1510
#define FF_DTG_AFD_16_9         10
1511
#define FF_DTG_AFD_14_9         11
1512
#define FF_DTG_AFD_4_3_SP_14_9  13
1513
#define FF_DTG_AFD_16_9_SP_14_9 14
1514
#define FF_DTG_AFD_SP_4_3       15
1515

    
1516
    /**
1517
     * maximum motion estimation search range in subpel units
1518
     * If 0 then no limit.
1519
     *
1520
     * - encoding: Set by user.
1521
     * - decoding: unused
1522
     */
1523
    int me_range;
1524

    
1525
    /**
1526
     * intra quantizer bias
1527
     * - encoding: Set by user.
1528
     * - decoding: unused
1529
     */
1530
    int intra_quant_bias;
1531
#define FF_DEFAULT_QUANT_BIAS 999999
1532

    
1533
    /**
1534
     * inter quantizer bias
1535
     * - encoding: Set by user.
1536
     * - decoding: unused
1537
     */
1538
    int inter_quant_bias;
1539

    
1540
    /**
1541
     * color table ID
1542
     * - encoding: unused
1543
     * - decoding: Which clrtable should be used for 8bit RGB images.
1544
     *             Tables have to be stored somewhere. FIXME
1545
     */
1546
    int color_table_id;
1547

    
1548
    /**
1549
     * internal_buffer count
1550
     * Don't touch, used by libavcodec default_get_buffer().
1551
     */
1552
    int internal_buffer_count;
1553

    
1554
    /**
1555
     * internal_buffers
1556
     * Don't touch, used by libavcodec default_get_buffer().
1557
     */
1558
    void *internal_buffer;
1559

    
1560
#define FF_LAMBDA_SHIFT 7
1561
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1562
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1563
#define FF_LAMBDA_MAX (256*128-1)
1564

    
1565
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1566
    /**
1567
     * Global quality for codecs which cannot change it per frame.
1568
     * This should be proportional to MPEG-1/2/4 qscale.
1569
     * - encoding: Set by user.
1570
     * - decoding: unused
1571
     */
1572
    int global_quality;
1573

    
1574
#define FF_CODER_TYPE_VLC       0
1575
#define FF_CODER_TYPE_AC        1
1576
#define FF_CODER_TYPE_RAW       2
1577
#define FF_CODER_TYPE_RLE       3
1578
#define FF_CODER_TYPE_DEFLATE   4
1579
    /**
1580
     * coder type
1581
     * - encoding: Set by user.
1582
     * - decoding: unused
1583
     */
1584
    int coder_type;
1585

    
1586
    /**
1587
     * context model
1588
     * - encoding: Set by user.
1589
     * - decoding: unused
1590
     */
1591
    int context_model;
1592
#if 0
1593
    /**
1594
     *
1595
     * - encoding: unused
1596
     * - decoding: Set by user.
1597
     */
1598
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1599
#endif
1600

    
1601
    /**
1602
     * slice flags
1603
     * - encoding: unused
1604
     * - decoding: Set by user.
1605
     */
1606
    int slice_flags;
1607
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1608
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1609
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1610

    
1611
    /**
1612
     * XVideo Motion Acceleration
1613
     * - encoding: forbidden
1614
     * - decoding: set by decoder
1615
     */
1616
    int xvmc_acceleration;
1617

    
1618
    /**
1619
     * macroblock decision mode
1620
     * - encoding: Set by user.
1621
     * - decoding: unused
1622
     */
1623
    int mb_decision;
1624
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1625
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1626
#define FF_MB_DECISION_RD     2        ///< rate distoration
1627

    
1628
    /**
1629
     * custom intra quantization matrix
1630
     * - encoding: Set by user, can be NULL.
1631
     * - decoding: Set by libavcodec.
1632
     */
1633
    uint16_t *intra_matrix;
1634

    
1635
    /**
1636
     * custom inter quantization matrix
1637
     * - encoding: Set by user, can be NULL.
1638
     * - decoding: Set by libavcodec.
1639
     */
1640
    uint16_t *inter_matrix;
1641

    
1642
    /**
1643
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1644
     * This is used to work around some encoder bugs.
1645
     * - encoding: unused
1646
     * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1647
     */
1648
    unsigned int stream_codec_tag;
1649

    
1650
    /**
1651
     * scene change detection threshold
1652
     * 0 is default, larger means fewer detected scene changes.
1653
     * - encoding: Set by user.
1654
     * - decoding: unused
1655
     */
1656
    int scenechange_threshold;
1657

    
1658
    /**
1659
     * minimum Lagrange multipler
1660
     * - encoding: Set by user.
1661
     * - decoding: unused
1662
     */
1663
    int lmin;
1664

    
1665
    /**
1666
     * maximum Lagrange multipler
1667
     * - encoding: Set by user.
1668
     * - decoding: unused
1669
     */
1670
    int lmax;
1671

    
1672
    /**
1673
     * palette control structure
1674
     * - encoding: ??? (no palette-enabled encoder yet)
1675
     * - decoding: Set by user.
1676
     */
1677
    struct AVPaletteControl *palctrl;
1678

    
1679
    /**
1680
     * noise reduction strength
1681
     * - encoding: Set by user.
1682
     * - decoding: unused
1683
     */
1684
    int noise_reduction;
1685

    
1686
    /**
1687
     * Called at the beginning of a frame to get cr buffer for it.
1688
     * Buffer type (size, hints) must be the same. libavcodec won't check it.
1689
     * libavcodec will pass previous buffer in pic, function should return
1690
     * same buffer or new buffer with old frame "painted" into it.
1691
     * If pic.data[0] == NULL must behave like get_buffer().
1692
     * - encoding: unused
1693
     * - decoding: Set by libavcodec., user can override
1694
     */
1695
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1696

    
1697
    /**
1698
     * Number of bits which should be loaded into the rc buffer before decoding starts.
1699
     * - encoding: Set by user.
1700
     * - decoding: unused
1701
     */
1702
    int rc_initial_buffer_occupancy;
1703

    
1704
    /**
1705
     *
1706
     * - encoding: Set by user.
1707
     * - decoding: unused
1708
     */
1709
    int inter_threshold;
1710

    
1711
    /**
1712
     * CODEC_FLAG2_*
1713
     * - encoding: Set by user.
1714
     * - decoding: Set by user.
1715
     */
1716
    int flags2;
1717

    
1718
    /**
1719
     * Simulates errors in the bitstream to test error concealment.
1720
     * - encoding: Set by user.
1721
     * - decoding: unused
1722
     */
1723
    int error_rate;
1724

    
1725
    /**
1726
     * MP3 antialias algorithm, see FF_AA_* below.
1727
     * - encoding: unused
1728
     * - decoding: Set by user.
1729
     */
1730
    int antialias_algo;
1731
#define FF_AA_AUTO    0
1732
#define FF_AA_FASTINT 1 //not implemented yet
1733
#define FF_AA_INT     2
1734
#define FF_AA_FLOAT   3
1735
    /**
1736
     * quantizer noise shaping
1737
     * - encoding: Set by user.
1738
     * - decoding: unused
1739
     */
1740
    int quantizer_noise_shaping;
1741

    
1742
    /**
1743
     * thread count
1744
     * is used to decide how many independent tasks should be passed to execute()
1745
     * - encoding: Set by user.
1746
     * - decoding: Set by user.
1747
     */
1748
    int thread_count;
1749

    
1750
    /**
1751
     * The codec may call this to execute several independent things.
1752
     * It will return only after finishing all tasks.
1753
     * The user may replace this with some multithreaded implementation,
1754
     * the default implementation will execute the parts serially.
1755
     * @param count the number of things to execute
1756
     * - encoding: Set by libavcodec, user can override.
1757
     * - decoding: Set by libavcodec, user can override.
1758
     */
1759
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1760

    
1761
    /**
1762
     * thread opaque
1763
     * Can be used by execute() to store some per AVCodecContext stuff.
1764
     * - encoding: set by execute()
1765
     * - decoding: set by execute()
1766
     */
1767
    void *thread_opaque;
1768

    
1769
    /**
1770
     * Motion estimation threshold below which no motion estimation is
1771
     * performed, but instead the user specified motion vectors are used.
1772
     *
1773
     * - encoding: Set by user.
1774
     * - decoding: unused
1775
     */
1776
     int me_threshold;
1777

    
1778
    /**
1779
     * Macroblock threshold below which the user specified macroblock types will be used.
1780
     * - encoding: Set by user.
1781
     * - decoding: unused
1782
     */
1783
     int mb_threshold;
1784

    
1785
    /**
1786
     * precision of the intra DC coefficient - 8
1787
     * - encoding: Set by user.
1788
     * - decoding: unused
1789
     */
1790
     int intra_dc_precision;
1791

    
1792
    /**
1793
     * noise vs. sse weight for the nsse comparsion function
1794
     * - encoding: Set by user.
1795
     * - decoding: unused
1796
     */
1797
     int nsse_weight;
1798

    
1799
    /**
1800
     * Number of macroblock rows at the top which are skipped.
1801
     * - encoding: unused
1802
     * - decoding: Set by user.
1803
     */
1804
     int skip_top;
1805

    
1806
    /**
1807
     * Number of macroblock rows at the bottom which are skipped.
1808
     * - encoding: unused
1809
     * - decoding: Set by user.
1810
     */
1811
     int skip_bottom;
1812

    
1813
    /**
1814
     * profile
1815
     * - encoding: Set by user.
1816
     * - decoding: Set by libavcodec.
1817
     */
1818
     int profile;
1819
#define FF_PROFILE_UNKNOWN -99
1820
#define FF_PROFILE_AAC_MAIN 0
1821
#define FF_PROFILE_AAC_LOW 1
1822
#define FF_PROFILE_AAC_SSR 2
1823
#define FF_PROFILE_AAC_LTP 3
1824

    
1825
    /**
1826
     * level
1827
     * - encoding: Set by user.
1828
     * - decoding: Set by libavcodec.
1829
     */
1830
     int level;
1831
#define FF_LEVEL_UNKNOWN -99
1832

    
1833
    /**
1834
     * low resolution decoding, 1-> 1/2 size, 2->1/4 size
1835
     * - encoding: unused
1836
     * - decoding: Set by user.
1837
     */
1838
     int lowres;
1839

    
1840
    /**
1841
     * Bitstream width / height, may be different from width/height if lowres
1842
     * or other things are used.
1843
     * - encoding: unused
1844
     * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1845
     */
1846
    int coded_width, coded_height;
1847

    
1848
    /**
1849
     * frame skip threshold
1850
     * - encoding: Set by user.
1851
     * - decoding: unused
1852
     */
1853
    int frame_skip_threshold;
1854

    
1855
    /**
1856
     * frame skip factor
1857
     * - encoding: Set by user.
1858
     * - decoding: unused
1859
     */
1860
    int frame_skip_factor;
1861

    
1862
    /**
1863
     * frame skip exponent
1864
     * - encoding: Set by user.
1865
     * - decoding: unused
1866
     */
1867
    int frame_skip_exp;
1868

    
1869
    /**
1870
     * frame skip comparison function
1871
     * - encoding: Set by user.
1872
     * - decoding: unused
1873
     */
1874
    int frame_skip_cmp;
1875

    
1876
    /**
1877
     * Border processing masking, raises the quantizer for mbs on the borders
1878
     * of the picture.
1879
     * - encoding: Set by user.
1880
     * - decoding: unused
1881
     */
1882
    float border_masking;
1883

    
1884
    /**
1885
     * minimum MB lagrange multipler
1886
     * - encoding: Set by user.
1887
     * - decoding: unused
1888
     */
1889
    int mb_lmin;
1890

    
1891
    /**
1892
     * maximum MB lagrange multipler
1893
     * - encoding: Set by user.
1894
     * - decoding: unused
1895
     */
1896
    int mb_lmax;
1897

    
1898
    /**
1899
     *
1900
     * - encoding: Set by user.
1901
     * - decoding: unused
1902
     */
1903
    int me_penalty_compensation;
1904

    
1905
    /**
1906
     *
1907
     * - encoding: unused
1908
     * - decoding: Set by user.
1909
     */
1910
    enum AVDiscard skip_loop_filter;
1911

    
1912
    /**
1913
     *
1914
     * - encoding: unused
1915
     * - decoding: Set by user.
1916
     */
1917
    enum AVDiscard skip_idct;
1918

    
1919
    /**
1920
     *
1921
     * - encoding: unused
1922
     * - decoding: Set by user.
1923
     */
1924
    enum AVDiscard skip_frame;
1925

    
1926
    /**
1927
     *
1928
     * - encoding: Set by user.
1929
     * - decoding: unused
1930
     */
1931
    int bidir_refine;
1932

    
1933
    /**
1934
     *
1935
     * - encoding: Set by user.
1936
     * - decoding: unused
1937
     */
1938
    int brd_scale;
1939

    
1940
    /**
1941
     * constant rate factor - quality-based VBR - values ~correspond to qps
1942
     * - encoding: Set by user.
1943
     * - decoding: unused
1944
     */
1945
    float crf;
1946

    
1947
    /**
1948
     * constant quantization parameter rate control method
1949
     * - encoding: Set by user.
1950
     * - decoding: unused
1951
     */
1952
    int cqp;
1953

    
1954
    /**
1955
     * minimum GOP size
1956
     * - encoding: Set by user.
1957
     * - decoding: unused
1958
     */
1959
    int keyint_min;
1960

    
1961
    /**
1962
     * number of reference frames
1963
     * - encoding: Set by user.
1964
     * - decoding: unused
1965
     */
1966
    int refs;
1967

    
1968
    /**
1969
     * chroma qp offset from luma
1970
     * - encoding: Set by user.
1971
     * - decoding: unused
1972
     */
1973
    int chromaoffset;
1974

    
1975
    /**
1976
     * Influences how often B-frames are used.
1977
     * - encoding: Set by user.
1978
     * - decoding: unused
1979
     */
1980
    int bframebias;
1981

    
1982
    /**
1983
     * trellis RD quantization
1984
     * - encoding: Set by user.
1985
     * - decoding: unused
1986
     */
1987
    int trellis;
1988

    
1989
    /**
1990
     * Reduce fluctuations in qp (before curve compression).
1991
     * - encoding: Set by user.
1992
     * - decoding: unused
1993
     */
1994
    float complexityblur;
1995

    
1996
    /**
1997
     * in-loop deblocking filter alphac0 parameter
1998
     * alpha is in the range -6...6
1999
     * - encoding: Set by user.
2000
     * - decoding: unused
2001
     */
2002
    int deblockalpha;
2003

    
2004
    /**
2005
     * in-loop deblocking filter beta parameter
2006
     * beta is in the range -6...6
2007
     * - encoding: Set by user.
2008
     * - decoding: unused
2009
     */
2010
    int deblockbeta;
2011

    
2012
    /**
2013
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
2014
     * - encoding: Set by user.
2015
     * - decoding: unused
2016
     */
2017
    int partitions;
2018
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
2019
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
2020
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
2021
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
2022
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
2023

    
2024
    /**
2025
     * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal)
2026
     * - encoding: Set by user.
2027
     * - decoding: unused
2028
     */
2029
    int directpred;
2030

    
2031
    /**
2032
     * Audio cutoff bandwidth (0 means "automatic"), currently used only by FAAC.
2033
     * - encoding: Set by user.
2034
     * - decoding: unused
2035
     */
2036
    int cutoff;
2037

    
2038
    /**
2039
     * Multiplied by qscale for each frame and added to scene_change_score.
2040
     * - encoding: Set by user.
2041
     * - decoding: unused
2042
     */
2043
    int scenechange_factor;
2044

    
2045
    /**
2046
     *
2047
     * Note: Value depends upon the compare function used for fullpel ME.
2048
     * - encoding: Set by user.
2049
     * - decoding: unused
2050
     */
2051
    int mv0_threshold;
2052

    
2053
    /**
2054
     * Adjusts sensitivity of b_frame_strategy 1.
2055
     * - encoding: Set by user.
2056
     * - decoding: unused
2057
     */
2058
    int b_sensitivity;
2059

    
2060
    /**
2061
     * - encoding: Set by user.
2062
     * - decoding: unused
2063
     */
2064
    int compression_level;
2065
#define FF_COMPRESSION_DEFAULT -1
2066

    
2067
    /**
2068
     * Sets whether to use LPC mode - used by FLAC encoder.
2069
     * - encoding: Set by user.
2070
     * - decoding: unused
2071
     */
2072
    int use_lpc;
2073

    
2074
    /**
2075
     * LPC coefficient precision - used by FLAC encoder
2076
     * - encoding: Set by user.
2077
     * - decoding: unused
2078
     */
2079
    int lpc_coeff_precision;
2080

    
2081
    /**
2082
     * - encoding: Set by user.
2083
     * - decoding: unused
2084
     */
2085
    int min_prediction_order;
2086

    
2087
    /**
2088
     * - encoding: Set by user.
2089
     * - decoding: unused
2090
     */
2091
    int max_prediction_order;
2092

    
2093
    /**
2094
     * search method for selecting prediction order
2095
     * - encoding: Set by user.
2096
     * - decoding: unused
2097
     */
2098
    int prediction_order_method;
2099

    
2100
    /**
2101
     * - encoding: Set by user.
2102
     * - decoding: unused
2103
     */
2104
    int min_partition_order;
2105

    
2106
    /**
2107
     * - encoding: Set by user.
2108
     * - decoding: unused
2109
     */
2110
    int max_partition_order;
2111

    
2112
    /**
2113
     * GOP timecode frame start number, in non drop frame format
2114
     * - encoding: Set by user.
2115
     * - decoding: unused
2116
     */
2117
    int64_t timecode_frame_start;
2118
} AVCodecContext;
2119

    
2120
/**
2121
 * AVCodec.
2122
 */
2123
typedef struct AVCodec {
2124
    const char *name;
2125
    enum CodecType type;
2126
    enum CodecID id;
2127
    int priv_data_size;
2128
    int (*init)(AVCodecContext *);
2129
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2130
    int (*close)(AVCodecContext *);
2131
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2132
                  uint8_t *buf, int buf_size);
2133
    int capabilities;
2134
    struct AVCodec *next;
2135
    void (*flush)(AVCodecContext *);
2136
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2137
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2138
} AVCodec;
2139

    
2140
/**
2141
 * four components are given, that's all.
2142
 * the last component is alpha
2143
 */
2144
typedef struct AVPicture {
2145
    uint8_t *data[4];
2146
    int linesize[4];       ///< number of bytes per line
2147
} AVPicture;
2148

    
2149
/**
2150
 * AVPaletteControl
2151
 * This structure defines a method for communicating palette changes
2152
 * between and demuxer and a decoder.
2153
 *
2154
 * @deprecated Use AVPacket to send palette changes instead.
2155
 * This is totally broken.
2156
 */
2157
#define AVPALETTE_SIZE 1024
2158
#define AVPALETTE_COUNT 256
2159
typedef struct AVPaletteControl {
2160

    
2161
    /* Demuxer sets this to 1 to indicate the palette has changed;
2162
     * decoder resets to 0. */
2163
    int palette_changed;
2164

    
2165
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2166
     * the individual palette components should be on a 8-bit scale; if
2167
     * the palette data comes from an IBM VGA native format, the component
2168
     * data is probably 6 bits in size and needs to be scaled. */
2169
    unsigned int palette[AVPALETTE_COUNT];
2170

    
2171
} AVPaletteControl attribute_deprecated;
2172

    
2173
typedef struct AVSubtitleRect {
2174
    uint16_t x;
2175
    uint16_t y;
2176
    uint16_t w;
2177
    uint16_t h;
2178
    uint16_t nb_colors;
2179
    int linesize;
2180
    uint32_t *rgba_palette;
2181
    uint8_t *bitmap;
2182
} AVSubtitleRect;
2183

    
2184
typedef struct AVSubtitle {
2185
    uint16_t format; /* 0 = graphics */
2186
    uint32_t start_display_time; /* relative to packet pts, in ms */
2187
    uint32_t end_display_time; /* relative to packet pts, in ms */
2188
    uint32_t num_rects;
2189
    AVSubtitleRect *rects;
2190
} AVSubtitle;
2191

    
2192
extern AVCodec ac3_encoder;
2193
extern AVCodec asv1_encoder;
2194
extern AVCodec asv2_encoder;
2195
extern AVCodec bmp_encoder;
2196
extern AVCodec dvvideo_encoder;
2197
extern AVCodec ffv1_encoder;
2198
extern AVCodec ffvhuff_encoder;
2199
extern AVCodec flac_encoder;
2200
extern AVCodec flashsv_encoder;
2201
extern AVCodec flv_encoder;
2202
extern AVCodec gif_encoder;
2203
extern AVCodec h261_encoder;
2204
extern AVCodec h263_encoder;
2205
extern AVCodec h263p_encoder;
2206
extern AVCodec h264_encoder;
2207
extern AVCodec huffyuv_encoder;
2208
extern AVCodec jpegls_encoder;
2209
extern AVCodec ljpeg_encoder;
2210
extern AVCodec mdec_encoder;
2211
extern AVCodec mjpeg_encoder;
2212
extern AVCodec mp2_encoder;
2213
extern AVCodec mpeg1video_encoder;
2214
extern AVCodec mpeg2video_encoder;
2215
extern AVCodec mpeg4_encoder;
2216
extern AVCodec msmpeg4v1_encoder;
2217
extern AVCodec msmpeg4v2_encoder;
2218
extern AVCodec msmpeg4v3_encoder;
2219
extern AVCodec pam_encoder;
2220
extern AVCodec pbm_encoder;
2221
extern AVCodec pgm_encoder;
2222
extern AVCodec pgmyuv_encoder;
2223
extern AVCodec png_encoder;
2224
extern AVCodec ppm_encoder;
2225
extern AVCodec roq_dpcm_encoder;
2226
extern AVCodec rv10_encoder;
2227
extern AVCodec rv20_encoder;
2228
extern AVCodec sgi_encoder;
2229
extern AVCodec snow_encoder;
2230
extern AVCodec sonic_encoder;
2231
extern AVCodec sonic_ls_encoder;
2232
extern AVCodec svq1_encoder;
2233
extern AVCodec targa_encoder;
2234
extern AVCodec tiff_encoder;
2235
extern AVCodec vcr1_encoder;
2236
extern AVCodec vorbis_encoder;
2237
extern AVCodec wmav1_encoder;
2238
extern AVCodec wmav2_encoder;
2239
extern AVCodec wmv1_encoder;
2240
extern AVCodec wmv2_encoder;
2241
extern AVCodec zmbv_encoder;
2242

    
2243
extern AVCodec aasc_decoder;
2244
extern AVCodec alac_decoder;
2245
extern AVCodec asv1_decoder;
2246
extern AVCodec asv2_decoder;
2247
extern AVCodec atrac3_decoder;
2248
extern AVCodec avs_decoder;
2249
extern AVCodec bethsoftvid_decoder;
2250
extern AVCodec bmp_decoder;
2251
extern AVCodec c93_decoder;
2252
extern AVCodec cavs_decoder;
2253
extern AVCodec cinepak_decoder;
2254
extern AVCodec cljr_decoder;
2255
extern AVCodec cook_decoder;
2256
extern AVCodec cscd_decoder;
2257
extern AVCodec cyuv_decoder;
2258
extern AVCodec dca_decoder;
2259
extern AVCodec dnxhd_decoder;
2260
extern AVCodec dsicinaudio_decoder;
2261
extern AVCodec dsicinvideo_decoder;
2262
extern AVCodec dvvideo_decoder;
2263
extern AVCodec dxa_decoder;
2264
extern AVCodec eightbps_decoder;
2265
extern AVCodec ffv1_decoder;
2266
extern AVCodec ffvhuff_decoder;
2267
extern AVCodec flac_decoder;
2268
extern AVCodec flashsv_decoder;
2269
extern AVCodec flic_decoder;
2270
extern AVCodec flv_decoder;
2271
extern AVCodec fourxm_decoder;
2272
extern AVCodec fraps_decoder;
2273
extern AVCodec gif_decoder;
2274
extern AVCodec h261_decoder;
2275
extern AVCodec h263_decoder;
2276
extern AVCodec h263i_decoder;
2277
extern AVCodec h264_decoder;
2278
extern AVCodec huffyuv_decoder;
2279
extern AVCodec idcin_decoder;
2280
extern AVCodec imc_decoder;
2281
extern AVCodec indeo2_decoder;
2282
extern AVCodec indeo3_decoder;
2283
extern AVCodec interplay_dpcm_decoder;
2284
extern AVCodec interplay_video_decoder;
2285
extern AVCodec jpegls_decoder;
2286
extern AVCodec kmvc_decoder;
2287
extern AVCodec loco_decoder;
2288
extern AVCodec mace3_decoder;
2289
extern AVCodec mace6_decoder;
2290
extern AVCodec mdec_decoder;
2291
extern AVCodec mjpeg_decoder;
2292
extern AVCodec mjpegb_decoder;
2293
extern AVCodec mmvideo_decoder;
2294
extern AVCodec mp2_decoder;
2295
extern AVCodec mp3_decoder;
2296
extern AVCodec mp3adu_decoder;
2297
extern AVCodec mp3on4_decoder;
2298
extern AVCodec mpc7_decoder;
2299
extern AVCodec mpeg1video_decoder;
2300
extern AVCodec mpeg2video_decoder;
2301
extern AVCodec mpeg4_decoder;
2302
extern AVCodec mpeg_xvmc_decoder;
2303
extern AVCodec mpegvideo_decoder;
2304
extern AVCodec msmpeg4v1_decoder;
2305
extern AVCodec msmpeg4v2_decoder;
2306
extern AVCodec msmpeg4v3_decoder;
2307
extern AVCodec msrle_decoder;
2308
extern AVCodec msvideo1_decoder;
2309
extern AVCodec mszh_decoder;
2310
extern AVCodec nuv_decoder;
2311
extern AVCodec png_decoder;
2312
extern AVCodec ptx_decoder;
2313
extern AVCodec qdm2_decoder;
2314
extern AVCodec qdraw_decoder;
2315
extern AVCodec qpeg_decoder;
2316
extern AVCodec qtrle_decoder;
2317
extern AVCodec ra_144_decoder;
2318
extern AVCodec ra_288_decoder;
2319
extern AVCodec roq_decoder;
2320
extern AVCodec roq_dpcm_decoder;
2321
extern AVCodec rpza_decoder;
2322
extern AVCodec rv10_decoder;
2323
extern AVCodec rv20_decoder;
2324
extern AVCodec rv30_decoder;
2325
extern AVCodec rv40_decoder;
2326
extern AVCodec sgi_decoder;
2327
extern AVCodec shorten_decoder;
2328
extern AVCodec smackaud_decoder;
2329
extern AVCodec smacker_decoder;
2330
extern AVCodec smc_decoder;
2331
extern AVCodec snow_decoder;
2332
extern AVCodec sol_dpcm_decoder;
2333
extern AVCodec sonic_decoder;
2334
extern AVCodec sp5x_decoder;
2335
extern AVCodec svq1_decoder;
2336
extern AVCodec svq3_decoder;
2337
extern AVCodec targa_decoder;
2338
extern AVCodec theora_decoder;
2339
extern AVCodec thp_decoder;
2340
extern AVCodec tiertexseqvideo_decoder;
2341
extern AVCodec tiff_decoder;
2342
extern AVCodec truemotion1_decoder;
2343
extern AVCodec truemotion2_decoder;
2344
extern AVCodec truespeech_decoder;
2345
extern AVCodec tscc_decoder;
2346
extern AVCodec tta_decoder;
2347
extern AVCodec txd_decoder;
2348
extern AVCodec ulti_decoder;
2349
extern AVCodec vc1_decoder;
2350
extern AVCodec vcr1_decoder;
2351
extern AVCodec vmdaudio_decoder;
2352
extern AVCodec vmdvideo_decoder;
2353
extern AVCodec vmnc_decoder;
2354
extern AVCodec vorbis_decoder;
2355
extern AVCodec vp3_decoder;
2356
extern AVCodec vp5_decoder;
2357
extern AVCodec vp6_decoder;
2358
extern AVCodec vp6f_decoder;
2359
extern AVCodec vqa_decoder;
2360
extern AVCodec wavpack_decoder;
2361
extern AVCodec wmav1_decoder;
2362
extern AVCodec wmav2_decoder;
2363
extern AVCodec wmv1_decoder;
2364
extern AVCodec wmv2_decoder;
2365
extern AVCodec wmv3_decoder;
2366
extern AVCodec wnv1_decoder;
2367
extern AVCodec ws_snd1_decoder;
2368
extern AVCodec xan_dpcm_decoder;
2369
extern AVCodec xan_wc3_decoder;
2370
extern AVCodec xl_decoder;
2371
extern AVCodec zmbv_decoder;
2372

    
2373
/* PCM codecs */
2374
#define PCM_CODEC(id, name) \
2375
extern AVCodec name ## _decoder; \
2376
extern AVCodec name ## _encoder
2377

    
2378
PCM_CODEC(CODEC_ID_PCM_ALAW,    pcm_alaw);
2379
PCM_CODEC(CODEC_ID_PCM_MULAW,   pcm_mulaw);
2380
PCM_CODEC(CODEC_ID_PCM_S8,      pcm_s8);
2381
PCM_CODEC(CODEC_ID_PCM_S16BE,   pcm_s16be);
2382
PCM_CODEC(CODEC_ID_PCM_S16LE,   pcm_s16le);
2383
PCM_CODEC(CODEC_ID_PCM_S24BE,   pcm_s24be);
2384
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2385
PCM_CODEC(CODEC_ID_PCM_S24LE,   pcm_s24le);
2386
PCM_CODEC(CODEC_ID_PCM_S32BE,   pcm_s32be);
2387
PCM_CODEC(CODEC_ID_PCM_S32LE,   pcm_s32le);
2388
PCM_CODEC(CODEC_ID_PCM_U8,      pcm_u8);
2389
PCM_CODEC(CODEC_ID_PCM_U16BE,   pcm_u16be);
2390
PCM_CODEC(CODEC_ID_PCM_U16LE,   pcm_u16le);
2391
PCM_CODEC(CODEC_ID_PCM_U24BE,   pcm_u24be);
2392
PCM_CODEC(CODEC_ID_PCM_U24LE,   pcm_u24le);
2393
PCM_CODEC(CODEC_ID_PCM_U32BE,   pcm_u32be);
2394
PCM_CODEC(CODEC_ID_PCM_U32LE,   pcm_u32le);
2395

    
2396
/* ADPCM codecs */
2397

    
2398
PCM_CODEC(CODEC_ID_ADPCM_4XM,     adpcm_4xm);
2399
PCM_CODEC(CODEC_ID_ADPCM_ADX,     adpcm_adx);
2400
PCM_CODEC(CODEC_ID_ADPCM_CT,      adpcm_ct);
2401
PCM_CODEC(CODEC_ID_ADPCM_EA,      adpcm_ea);
2402
PCM_CODEC(CODEC_ID_ADPCM_G726,    adpcm_g726);
2403
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2404
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2405
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT,  adpcm_ima_qt);
2406
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2407
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS,  adpcm_ima_ws);
2408
PCM_CODEC(CODEC_ID_ADPCM_MS,      adpcm_ms);
2409
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2410
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2411
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2412
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG,  adpcm_ima_smjpeg);
2413
PCM_CODEC(CODEC_ID_ADPCM_SWF,     adpcm_swf);
2414
PCM_CODEC(CODEC_ID_ADPCM_THP,     adpcm_thp);
2415
PCM_CODEC(CODEC_ID_ADPCM_XA,      adpcm_xa);
2416
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA,  adpcm_yamaha);
2417

    
2418
#undef PCM_CODEC
2419

    
2420
/* dummy raw video codec */
2421
extern AVCodec rawvideo_decoder;
2422
extern AVCodec rawvideo_encoder;
2423

    
2424
/* the following codecs use external libs */
2425
extern AVCodec aac_decoder;
2426
extern AVCodec faac_encoder;
2427
extern AVCodec liba52_decoder;
2428
extern AVCodec libamr_nb_decoder;
2429
extern AVCodec libamr_nb_encoder;
2430
extern AVCodec libamr_wb_decoder;
2431
extern AVCodec libamr_wb_encoder;
2432
extern AVCodec libgsm_decoder;
2433
extern AVCodec libgsm_encoder;
2434
extern AVCodec libgsm_ms_decoder;
2435
extern AVCodec libgsm_ms_encoder;
2436
extern AVCodec libtheora_encoder;
2437
extern AVCodec libvorbis_decoder;
2438
extern AVCodec libvorbis_encoder;
2439
extern AVCodec mp3lame_encoder;
2440
extern AVCodec mpeg4aac_decoder;
2441
extern AVCodec x264_encoder;
2442
extern AVCodec xvid_encoder;
2443
extern AVCodec zlib_decoder;
2444
extern AVCodec zlib_encoder;
2445

    
2446
/* subtitles */
2447
extern AVCodec dvbsub_decoder;
2448
extern AVCodec dvbsub_encoder;
2449
extern AVCodec dvdsub_decoder;
2450
extern AVCodec dvdsub_encoder;
2451

    
2452
/* resample.c */
2453

    
2454
struct ReSampleContext;
2455
struct AVResampleContext;
2456

    
2457
typedef struct ReSampleContext ReSampleContext;
2458

    
2459
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2460
                                     int output_rate, int input_rate);
2461
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2462
void audio_resample_close(ReSampleContext *s);
2463

    
2464
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2465
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2466
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2467
void av_resample_close(struct AVResampleContext *c);
2468

    
2469
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2470
/* YUV420 format is assumed ! */
2471

    
2472
/**
2473
 * @deprecated Use the software scaler (swscale) instead.
2474
 */
2475
struct ImgReSampleContext attribute_deprecated;
2476

    
2477
/**
2478
 * @deprecated Use the software scaler (swscale) instead.
2479
 */
2480
typedef struct ImgReSampleContext ImgReSampleContext attribute_deprecated;
2481

    
2482
/**
2483
 * @deprecated Use the software scaler (swscale) instead.
2484
 */
2485
attribute_deprecated ImgReSampleContext *img_resample_init(int output_width, int output_height,
2486
                                      int input_width, int input_height);
2487

    
2488
/**
2489
 * @deprecated Use the software scaler (swscale) instead.
2490
 */
2491
attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2492
                                      int iwidth, int iheight,
2493
                                      int topBand, int bottomBand,
2494
                                      int leftBand, int rightBand,
2495
                                      int padtop, int padbottom,
2496
                                      int padleft, int padright);
2497

    
2498
/**
2499
 * @deprecated Use the software scaler (swscale) instead.
2500
 */
2501
attribute_deprecated void img_resample(ImgReSampleContext *s,
2502
                  AVPicture *output, const AVPicture *input);
2503

    
2504
/**
2505
 * @deprecated Use the software scaler (swscale) instead.
2506
 */
2507
attribute_deprecated void img_resample_close(ImgReSampleContext *s);
2508

    
2509
#endif
2510

    
2511
/**
2512
 * Allocate memory for a picture.  Call avpicture_free to free it.
2513
 *
2514
 * @param picture the picture to be filled in
2515
 * @param pix_fmt the format of the picture
2516
 * @param width the width of the picture
2517
 * @param height the height of the picture
2518
 * @return zero if successful, a negative value if not
2519
 */
2520
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2521

    
2522
/**
2523
 * Free a picture previously allocated by avpicture_alloc().
2524
 *
2525
 * @param picture the AVPicture to be freed
2526
 */
2527
void avpicture_free(AVPicture *picture);
2528

    
2529
/**
2530
 * Fill in the AVPicture fields.
2531
 * The fields of the given AVPicture are filled in by using the 'ptr' address
2532
 * which points to the image data buffer. Depending on the specified picture
2533
 * format, one or multiple image data pointers and line sizes will be set.
2534
 * If a planar format is specified, several pointers will be set pointing to
2535
 * the different picture planes and the line sizes of the different planes
2536
 * will be stored in the lines_sizes array.
2537
 *
2538
 * @param picture AVPicture whose fields are to be filled in
2539
 * @param ptr Buffer which will contain or contains the actual image data
2540
 * @param pix_fmt The format in which the picture data is stored.
2541
 * @param width the width of the image in pixels
2542
 * @param height the height of the image in pixels
2543
 * @return size of the image data in bytes
2544
 */
2545
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2546
                   int pix_fmt, int width, int height);
2547
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2548
                     unsigned char *dest, int dest_size);
2549

    
2550
/**
2551
 * Calculate the size in bytes that a picture of the given width and height
2552
 * would occupy if stored in the given picture format.
2553
 *
2554
 * @param pix_fmt the given picture format
2555
 * @param width the width of the image
2556
 * @param height the height of the image
2557
 * @return Image data size in bytes
2558
 */
2559
int avpicture_get_size(int pix_fmt, int width, int height);
2560
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2561
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2562
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2563
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2564
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2565

    
2566
#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
2567
#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
2568
#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
2569
#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
2570
#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
2571
#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
2572

    
2573
/**
2574
 * Computes what kind of losses will occur when converting from one specific
2575
 * pixel format to another.
2576
 * When converting from one pixel format to another, information loss may occur.
2577
 * For example, when converting from RGB24 to GRAY, the color information will
2578
 * be lost. Similarly, other losses occur when converting from some formats to
2579
 * other formats. These losses can involve loss of chroma, but also loss of
2580
 * resolution, loss of color depth, loss due to the color space conversion, loss
2581
 * of the alpha bits or loss due to color quantization.
2582
 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
2583
 * which will occur when converting from one pixel format to another.
2584
 *
2585
 * @param[in] dst_pix_fmt destination pixel format
2586
 * @param[in] src_pix_fmt source pixel format
2587
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2588
 * @return Combination of flags informing you what kind of losses will occur.
2589
 */
2590
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2591
                             int has_alpha);
2592

    
2593
/**
2594
 * Finds the best pixel format to convert to given a certain source pixel
2595
 * format.  When converting from one pixel format to another, information loss
2596
 * may occur.  For example, when converting from RGB24 to GRAY, the color
2597
 * information will be lost. Similarly, other losses occur when converting from
2598
 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
2599
 * the given pixel formats should be used to suffer the least amount of loss.
2600
 * The pixel formats from which it chooses one, are determined by the
2601
 * \p pix_fmt_mask parameter.
2602
 *
2603
 * @code
2604
 * src_pix_fmt = PIX_FMT_YUV420P;
2605
 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
2606
 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
2607
 * @endcode
2608
 *
2609
 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
2610
 * @param[in] src_pix_fmt source pixel format
2611
 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
2612
 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
2613
 * @return The best pixel format to convert to or -1 if none was found.
2614
 */
2615
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2616
                              int has_alpha, int *loss_ptr);
2617

    
2618
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2619
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2620

    
2621
/**
2622
 * Tell if an image really has transparent alpha values.
2623
 * @return ored mask of FF_ALPHA_xxx constants
2624
 */
2625
int img_get_alpha_info(const AVPicture *src,
2626
                       int pix_fmt, int width, int height);
2627

    
2628
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2629
/**
2630
 * convert among pixel formats
2631
 * @deprecated Use the software scaler (swscale) instead.
2632
 */
2633
attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
2634
                const AVPicture *src, int pix_fmt,
2635
                int width, int height);
2636
#endif
2637

    
2638
/* deinterlace a picture */
2639
/* deinterlace - if not supported return -1 */
2640
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2641
                          int pix_fmt, int width, int height);
2642

    
2643
/* external high level API */
2644

    
2645
extern AVCodec *first_avcodec;
2646

    
2647
/* returns LIBAVCODEC_VERSION_INT constant */
2648
unsigned avcodec_version(void);
2649
/* returns LIBAVCODEC_BUILD constant */
2650
unsigned avcodec_build(void);
2651

    
2652
/**
2653
 * Initializes libavcodec.
2654
 *
2655
 * @warning This function \e must be called before any other libavcodec
2656
 * function.
2657
 */
2658
void avcodec_init(void);
2659

    
2660
void register_avcodec(AVCodec *format);
2661

    
2662
/**
2663
 * Finds an encoder with a matching codec ID.
2664
 *
2665
 * @param id CodecID of the requested encoder
2666
 * @return An encoder if one was found, NULL otherwise.
2667
 */
2668
AVCodec *avcodec_find_encoder(enum CodecID id);
2669

    
2670
/**
2671
 * Finds an encoder with the specified name.
2672
 *
2673
 * @param name name of the requested encoder
2674
 * @return An encoder if one was found, NULL otherwise.
2675
 */
2676
AVCodec *avcodec_find_encoder_by_name(const char *name);
2677

    
2678
/**
2679
 * Finds a decoder with a matching codec ID.
2680
 *
2681
 * @param id CodecID of the requested decoder
2682
 * @return A decoder if one was found, NULL otherwise.
2683
 */
2684
AVCodec *avcodec_find_decoder(enum CodecID id);
2685

    
2686
/**
2687
 * Finds an decoder with the specified name.
2688
 *
2689
 * @param name name of the requested decoder
2690
 * @return A decoder if one was found, NULL otherwise.
2691
 */
2692
AVCodec *avcodec_find_decoder_by_name(const char *name);
2693
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2694

    
2695
/**
2696
 * Sets the fields of the given AVCodecContext to default values.
2697
 *
2698
 * @param s The AVCodecContext of which the fields should be set to default values.
2699
 */
2700
void avcodec_get_context_defaults(AVCodecContext *s);
2701

    
2702
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2703
 *  we WILL change its arguments and name a few times! */
2704
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType);
2705

    
2706
/**
2707
 * Allocates an AVCodecContext and sets its fields to default values.  The
2708
 * resulting struct can be deallocated by simply calling av_free().
2709
 *
2710
 * @return An AVCodecContext filled with default values or NULL on failure.
2711
 * @see avcodec_get_context_defaults
2712
 */
2713
AVCodecContext *avcodec_alloc_context(void);
2714

    
2715
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
2716
 *  we WILL change its arguments and name a few times! */
2717
AVCodecContext *avcodec_alloc_context2(enum CodecType);
2718

    
2719
/**
2720
 * Sets the fields of the given AVFrame to default values.
2721
 *
2722
 * @param pic The AVFrame of which the fields should be set to default values.
2723
 */
2724
void avcodec_get_frame_defaults(AVFrame *pic);
2725

    
2726
/**
2727
 * Allocates an AVFrame and sets its fields to default values.  The resulting
2728
 * struct can be deallocated by simply calling av_free().
2729
 *
2730
 * @return An AVFrame filled with default values or NULL on failure.
2731
 * @see avcodec_get_frame_defaults
2732
 */
2733
AVFrame *avcodec_alloc_frame(void);
2734

    
2735
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2736
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2737
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2738
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2739

    
2740
/**
2741
 * Checks if the given dimension of a picture is valid, meaning that all
2742
 * bytes of the picture can be addressed with a signed int.
2743
 *
2744
 * @param[in] w Width of the picture.
2745
 * @param[in] h Height of the picture.
2746
 * @return Zero if valid, a negative value if invalid.
2747
 */
2748
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2749
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2750

    
2751
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2752
void avcodec_thread_free(AVCodecContext *s);
2753
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2754
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2755
//FIXME func typedef
2756

    
2757
/**
2758
 * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
2759
 * function the context has to be allocated.
2760
 *
2761
 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
2762
 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
2763
 * retrieving a codec.
2764
 *
2765
 * @warning This function is not thread safe!
2766
 *
2767
 * @code
2768
 * codec = avcodec_find_decoder(CODEC_ID_H264);
2769
 * if (!codec)
2770
 *     exit(1);
2771
 *
2772
 * context = avcodec_alloc_context();
2773
 *
2774
 * if (avcodec_open(context, codec) < 0)
2775
 *     exit(1);
2776
 * @endcode
2777
 *
2778
 * @param avctx The context which will be set up to use the given codec.
2779
 * @param codec The codec to use within the context.
2780
 * @return zero on success, a negative value on error
2781
 * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
2782
 */
2783
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2784

    
2785
/**
2786
 * @deprecated Use avcodec_decode_audio2() instead.
2787
 */
2788
attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2789
                         int *frame_size_ptr,
2790
                         uint8_t *buf, int buf_size);
2791

    
2792
/**
2793
 * Decodes an audio frame from \p buf into \p samples.
2794
 * The avcodec_decode_audio2() function decodes an audio frame from the input
2795
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2796
 * audio codec which was coupled with \p avctx using avcodec_open(). The
2797
 * resulting decoded frame is stored in output buffer \p samples.  If no frame
2798
 * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
2799
 * decompressed frame size in \e bytes.
2800
 *
2801
 * @warning You \e must set \p frame_size_ptr to the allocated size of the
2802
 * output buffer before calling avcodec_decode_audio2().
2803
 *
2804
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2805
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2806
 * bits at once and could read over the end.
2807
 *
2808
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2809
 * no overreading happens for damaged MPEG streams.
2810
 *
2811
 * @note You might have to align the input buffer \p buf and output buffer \p
2812
 * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
2813
 * necessary at all, on others it won't work at all if not aligned and on others
2814
 * it will work but it will have an impact on performance. In practice, the
2815
 * bitstream should have 4 byte alignment at minimum and all sample data should
2816
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2817
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2818
 * start of the buffer to 16.
2819
 *
2820
 * @param avctx the codec context
2821
 * @param[out] samples the output buffer
2822
 * @param[in,out] frame_size_ptr the output buffer size in bytes
2823
 * @param[in] buf the input buffer
2824
 * @param[in] buf_size the input buffer size in bytes
2825
 * @return On error a negative value is returned, otherwise the number of bytes
2826
 * used or zero if no frame could be decompressed.
2827
 */
2828
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2829
                         int *frame_size_ptr,
2830
                         uint8_t *buf, int buf_size);
2831

    
2832
/**
2833
 * Decodes a video frame from \p buf into \p picture.
2834
 * The avcodec_decode_video() function decodes a video frame from the input
2835
 * buffer \p buf of size \p buf_size. To decode it, it makes use of the
2836
 * video codec which was coupled with \p avctx using avcodec_open(). The
2837
 * resulting decoded frame is stored in \p picture.
2838
 *
2839
 * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
2840
 * the actual read bytes because some optimized bitstream readers read 32 or 64
2841
 * bits at once and could read over the end.
2842
 *
2843
 * @warning The end of the input buffer \p buf should be set to 0 to ensure that
2844
 * no overreading happens for damaged MPEG streams.
2845
 *
2846
 * @note You might have to align the input buffer \p buf and output buffer \p
2847
 * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
2848
 * necessary at all, on others it won't work at all if not aligned and on others
2849
 * it will work but it will have an impact on performance. In practice, the
2850
 * bitstream should have 4 byte alignment at minimum and all sample data should
2851
 * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
2852
 * the linesize is not a multiple of 16 then there's no sense in aligning the
2853
 * start of the buffer to 16.
2854
 *
2855
 * @param avctx the codec context
2856
 * @param[out] picture The AVFrame in which the decoded video frame will be stored.
2857
 * @param[in] buf the input buffer
2858
 * @param[in] buf_size the size of the input buffer in bytes
2859
 * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
2860
 * @return On error a negative value is returned, otherwise the number of bytes
2861
 * used or zero if no frame could be decompressed.
2862
 */
2863
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2864
                         int *got_picture_ptr,
2865
                         uint8_t *buf, int buf_size);
2866

    
2867
/* Decode a subtitle message. Return -1 if error, otherwise return the
2868
 * number of bytes used. If no subtitle could be decompressed,
2869
 * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
2870
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2871
                            int *got_sub_ptr,
2872
                            const uint8_t *buf, int buf_size);
2873
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2874
                        int *data_size_ptr,
2875
                        uint8_t *buf, int buf_size);
2876

    
2877
/**
2878
 * Encodes an audio frame from \p samples into \p buf.
2879
 * The avcodec_encode_audio() function encodes an audio frame from the input
2880
 * buffer \p samples. To encode it, it makes use of the audio codec which was
2881
 * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
2882
 * stored in output buffer \p buf.
2883
 *
2884
 * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
2885
 *
2886
 * @param avctx the codec context
2887
 * @param[out] buf the output buffer
2888
 * @param[in] buf_size the output buffer size
2889
 * @param[in] samples the input buffer containing the samples
2890
 * @return On error a negative value is returned, on succes zero or the number
2891
 * of bytes used from the input buffer.
2892
 */
2893
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2894
                         const short *samples);
2895

    
2896
/**
2897
 * Encodes a video frame from \p pict into \p buf.
2898
 * The avcodec_encode_video() function encodes a video frame from the input
2899
 * \p pict. To encode it, it makes use of the video codec which was coupled with
2900
 * \p avctx using avcodec_open(). The resulting encoded bytes representing the
2901
 * frame are stored in the output buffer \p buf. The input picture should be
2902
 * stored using a specific format, namely \c avctx.pix_fmt.
2903
 *
2904
 * @param avctx the codec context
2905
 * @param[out] buf the output buffer for the bitstream of encoded frame
2906
 * @param[in] buf_size the size of the output buffer in bytes
2907
 * @param[in] pict the input picture to encode
2908
 * @return On error a negative value is returned, on success zero or the number
2909
 * of bytes used from the input buffer.
2910
 */
2911
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2912
                         const AVFrame *pict);
2913
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2914
                            const AVSubtitle *sub);
2915

    
2916
int avcodec_close(AVCodecContext *avctx);
2917

    
2918
void avcodec_register_all(void);
2919

    
2920
/**
2921
 * Flush buffers, should be called when seeking or when switching to a different stream.
2922
 */
2923
void avcodec_flush_buffers(AVCodecContext *avctx);
2924

    
2925
void avcodec_default_free_buffers(AVCodecContext *s);
2926

    
2927
/* misc useful functions */
2928

    
2929
/**
2930
 * Returns a single letter to describe the given picture type \p pict_type.
2931
 *
2932
 * @param[in] pict_type the picture type
2933
 * @return A single character representing the picture type.
2934
 */
2935
char av_get_pict_type_char(int pict_type);
2936

    
2937
/**
2938
 * Returns codec bits per sample.
2939
 *
2940
 * @param[in] codec_id the codec
2941
 * @return Number of bits per sample or zero if unknown for the given codec.
2942
 */
2943
int av_get_bits_per_sample(enum CodecID codec_id);
2944

    
2945
/* frame parsing */
2946
typedef struct AVCodecParserContext {
2947
    void *priv_data;
2948
    struct AVCodecParser *parser;
2949
    int64_t frame_offset; /* offset of the current frame */
2950
    int64_t cur_offset; /* current offset
2951
                           (incremented by each av_parser_parse()) */
2952
    int64_t last_frame_offset; /* offset of the last frame */
2953
    /* video info */
2954
    int pict_type; /* XXX: Put it back in AVCodecContext. */
2955
    int repeat_pict; /* XXX: Put it back in AVCodecContext. */
2956
    int64_t pts;     /* pts of the current frame */
2957
    int64_t dts;     /* dts of the current frame */
2958

    
2959
    /* private data */
2960
    int64_t last_pts;
2961
    int64_t last_dts;
2962
    int fetch_timestamp;
2963

    
2964
#define AV_PARSER_PTS_NB 4
2965
    int cur_frame_start_index;
2966
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2967
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2968
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2969

    
2970
    int flags;
2971
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2972

    
2973
    int64_t offset;      ///< byte offset from starting packet start
2974
    int64_t last_offset;
2975
} AVCodecParserContext;
2976

    
2977
typedef struct AVCodecParser {
2978
    int codec_ids[5]; /* several codec IDs are permitted */
2979
    int priv_data_size;
2980
    int (*parser_init)(AVCodecParserContext *s);
2981
    int (*parser_parse)(AVCodecParserContext *s,
2982
                        AVCodecContext *avctx,
2983
                        const uint8_t **poutbuf, int *poutbuf_size,
2984
                        const uint8_t *buf, int buf_size);
2985
    void (*parser_close)(AVCodecParserContext *s);
2986
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2987
    struct AVCodecParser *next;
2988
} AVCodecParser;
2989

    
2990
extern AVCodecParser *av_first_parser;
2991

    
2992
void av_register_codec_parser(AVCodecParser *parser);
2993
AVCodecParserContext *av_parser_init(int codec_id);
2994
int av_parser_parse(AVCodecParserContext *s,
2995
                    AVCodecContext *avctx,
2996
                    uint8_t **poutbuf, int *poutbuf_size,
2997
                    const uint8_t *buf, int buf_size,
2998
                    int64_t pts, int64_t dts);
2999
int av_parser_change(AVCodecParserContext *s,
3000
                     AVCodecContext *avctx,
3001
                     uint8_t **poutbuf, int *poutbuf_size,
3002
                     const uint8_t *buf, int buf_size, int keyframe);
3003
void av_parser_close(AVCodecParserContext *s);
3004

    
3005
extern AVCodecParser aac_parser;
3006
extern AVCodecParser ac3_parser;
3007
extern AVCodecParser cavsvideo_parser;
3008
extern AVCodecParser dca_parser;
3009
extern AVCodecParser dvbsub_parser;
3010
extern AVCodecParser dvdsub_parser;
3011
extern AVCodecParser h261_parser;
3012
extern AVCodecParser h263_parser;
3013
extern AVCodecParser h264_parser;
3014
extern AVCodecParser mjpeg_parser;
3015
extern AVCodecParser mpeg4video_parser;
3016
extern AVCodecParser mpegaudio_parser;
3017
extern AVCodecParser mpegvideo_parser;
3018
extern AVCodecParser pnm_parser;
3019
extern AVCodecParser vc1_parser;
3020

    
3021

    
3022
typedef struct AVBitStreamFilterContext {
3023
    void *priv_data;
3024
    struct AVBitStreamFilter *filter;
3025
    AVCodecParserContext *parser;
3026
    struct AVBitStreamFilterContext *next;
3027
} AVBitStreamFilterContext;
3028

    
3029

    
3030
typedef struct AVBitStreamFilter {
3031
    const char *name;
3032
    int priv_data_size;
3033
    int (*filter)(AVBitStreamFilterContext *bsfc,
3034
                  AVCodecContext *avctx, const char *args,
3035
                  uint8_t **poutbuf, int *poutbuf_size,
3036
                  const uint8_t *buf, int buf_size, int keyframe);
3037
    struct AVBitStreamFilter *next;
3038
} AVBitStreamFilter;
3039

    
3040
extern AVBitStreamFilter *av_first_bitstream_filter;
3041

    
3042
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
3043
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
3044
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
3045
                               AVCodecContext *avctx, const char *args,
3046
                               uint8_t **poutbuf, int *poutbuf_size,
3047
                               const uint8_t *buf, int buf_size, int keyframe);
3048
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
3049

    
3050
extern AVBitStreamFilter dump_extradata_bsf;
3051
extern AVBitStreamFilter remove_extradata_bsf;
3052
extern AVBitStreamFilter noise_bsf;
3053
extern AVBitStreamFilter mp3_header_compress_bsf;
3054
extern AVBitStreamFilter mp3_header_decompress_bsf;
3055
extern AVBitStreamFilter mjpega_dump_header_bsf;
3056
extern AVBitStreamFilter imx_dump_header_bsf;
3057

    
3058

    
3059
/* memory */
3060

    
3061
/**
3062
 * Reallocates the given block if it is not large enough, otherwise it
3063
 * does nothing.
3064
 *
3065
 * @see av_realloc
3066
 */
3067
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
3068

    
3069
/* for static data only */
3070

    
3071
/**
3072
 * Frees all static arrays and resets their pointers to 0.
3073
 * Call this function to release all statically allocated tables.
3074
 *
3075
 * @deprecated. Code which uses av_free_static is broken/missdesigned
3076
 * and should correctly use static arrays
3077
 *
3078
 */
3079
attribute_deprecated void av_free_static(void);
3080

    
3081
/**
3082
 * Allocation of static arrays.
3083
 *
3084
 * @warning Do not use for normal allocation.
3085
 *
3086
 * @param[in] size The amount of memory you need in bytes.
3087
 * @return block of memory of the requested size
3088
 * @deprecated. Code which uses av_mallocz_static is broken/missdesigned
3089
 * and should correctly use static arrays
3090
 */
3091
attribute_deprecated void *av_mallocz_static(unsigned int size);
3092

    
3093
/**
3094
 * Copy image 'src' to 'dst'.
3095
 */
3096
void av_picture_copy(AVPicture *dst, const AVPicture *src,
3097
              int pix_fmt, int width, int height);
3098

    
3099
/**
3100
 * Crop image top and left side.
3101
 */
3102
int av_picture_crop(AVPicture *dst, const AVPicture *src,
3103
             int pix_fmt, int top_band, int left_band);
3104

    
3105
/**
3106
 * Pad image.
3107
 */
3108
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3109
            int padtop, int padbottom, int padleft, int padright, int *color);
3110

    
3111
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
3112
/**
3113
 * @deprecated Use the software scaler (swscale) instead.
3114
 */
3115
attribute_deprecated void img_copy(AVPicture *dst, const AVPicture *src,
3116
              int pix_fmt, int width, int height);
3117

    
3118
/**
3119
 * @deprecated Use the software scaler (swscale) instead.
3120
 */
3121
attribute_deprecated int img_crop(AVPicture *dst, const AVPicture *src,
3122
             int pix_fmt, int top_band, int left_band);
3123

    
3124
/**
3125
 * @deprecated Use the software scaler (swscale) instead.
3126
 */
3127
attribute_deprecated int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
3128
            int padtop, int padbottom, int padleft, int padright, int *color);
3129
#endif
3130

    
3131
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
3132

    
3133
/* error handling */
3134
#if EINVAL > 0
3135
#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
3136
#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
3137
#else
3138
/* Some platforms have E* and errno already negated. */
3139
#define AVERROR(e) (e)
3140
#define AVUNERROR(e) (e)
3141
#endif
3142
#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
3143
#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
3144
#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
3145
#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
3146
#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
3147
#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
3148
#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
3149
#define AVERROR_NOENT       AVERROR(ENOENT)  /**< No such file or directory. */
3150

    
3151
#endif /* AVCODEC_H */