Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 514e0831

History | View | Annotate | Download (76.8 KB)

1
#ifndef AVCODEC_H
2
#define AVCODEC_H
3

    
4
/**
5
 * @file avcodec.h
6
 * external api header.
7
 */
8

    
9

    
10
#ifdef __cplusplus
11
extern "C" {
12
#endif
13

    
14
#include "avutil.h"
15
#include <sys/types.h> /* size_t */
16

    
17
#define AV_STRINGIFY(s)         AV_TOSTRING(s)
18
#define AV_TOSTRING(s) #s
19

    
20
#define LIBAVCODEC_VERSION_INT  ((51<<16)+(9<<8)+0)
21
#define LIBAVCODEC_VERSION      51.9.0
22
#define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
23

    
24
#define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
25

    
26
#define AV_NOPTS_VALUE          int64_t_C(0x8000000000000000)
27
#define AV_TIME_BASE            1000000
28
#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
29

    
30
enum CodecID {
31
    CODEC_ID_NONE,
32
    CODEC_ID_MPEG1VIDEO,
33
    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
34
    CODEC_ID_MPEG2VIDEO_XVMC,
35
    CODEC_ID_H261,
36
    CODEC_ID_H263,
37
    CODEC_ID_RV10,
38
    CODEC_ID_RV20,
39
    CODEC_ID_MJPEG,
40
    CODEC_ID_MJPEGB,
41
    CODEC_ID_LJPEG,
42
    CODEC_ID_SP5X,
43
    CODEC_ID_JPEGLS,
44
    CODEC_ID_MPEG4,
45
    CODEC_ID_RAWVIDEO,
46
    CODEC_ID_MSMPEG4V1,
47
    CODEC_ID_MSMPEG4V2,
48
    CODEC_ID_MSMPEG4V3,
49
    CODEC_ID_WMV1,
50
    CODEC_ID_WMV2,
51
    CODEC_ID_H263P,
52
    CODEC_ID_H263I,
53
    CODEC_ID_FLV1,
54
    CODEC_ID_SVQ1,
55
    CODEC_ID_SVQ3,
56
    CODEC_ID_DVVIDEO,
57
    CODEC_ID_HUFFYUV,
58
    CODEC_ID_CYUV,
59
    CODEC_ID_H264,
60
    CODEC_ID_INDEO3,
61
    CODEC_ID_VP3,
62
    CODEC_ID_THEORA,
63
    CODEC_ID_ASV1,
64
    CODEC_ID_ASV2,
65
    CODEC_ID_FFV1,
66
    CODEC_ID_4XM,
67
    CODEC_ID_VCR1,
68
    CODEC_ID_CLJR,
69
    CODEC_ID_MDEC,
70
    CODEC_ID_ROQ,
71
    CODEC_ID_INTERPLAY_VIDEO,
72
    CODEC_ID_XAN_WC3,
73
    CODEC_ID_XAN_WC4,
74
    CODEC_ID_RPZA,
75
    CODEC_ID_CINEPAK,
76
    CODEC_ID_WS_VQA,
77
    CODEC_ID_MSRLE,
78
    CODEC_ID_MSVIDEO1,
79
    CODEC_ID_IDCIN,
80
    CODEC_ID_8BPS,
81
    CODEC_ID_SMC,
82
    CODEC_ID_FLIC,
83
    CODEC_ID_TRUEMOTION1,
84
    CODEC_ID_VMDVIDEO,
85
    CODEC_ID_MSZH,
86
    CODEC_ID_ZLIB,
87
    CODEC_ID_QTRLE,
88
    CODEC_ID_SNOW,
89
    CODEC_ID_TSCC,
90
    CODEC_ID_ULTI,
91
    CODEC_ID_QDRAW,
92
    CODEC_ID_VIXL,
93
    CODEC_ID_QPEG,
94
    CODEC_ID_XVID,
95
    CODEC_ID_PNG,
96
    CODEC_ID_PPM,
97
    CODEC_ID_PBM,
98
    CODEC_ID_PGM,
99
    CODEC_ID_PGMYUV,
100
    CODEC_ID_PAM,
101
    CODEC_ID_FFVHUFF,
102
    CODEC_ID_RV30,
103
    CODEC_ID_RV40,
104
    CODEC_ID_VC1,
105
    CODEC_ID_WMV3,
106
    CODEC_ID_LOCO,
107
    CODEC_ID_WNV1,
108
    CODEC_ID_AASC,
109
    CODEC_ID_INDEO2,
110
    CODEC_ID_FRAPS,
111
    CODEC_ID_TRUEMOTION2,
112
    CODEC_ID_BMP,
113
    CODEC_ID_CSCD,
114
    CODEC_ID_MMVIDEO,
115
    CODEC_ID_ZMBV,
116
    CODEC_ID_AVS,
117
    CODEC_ID_SMACKVIDEO,
118
    CODEC_ID_NUV,
119
    CODEC_ID_KMVC,
120
    CODEC_ID_FLASHSV,
121
    CODEC_ID_CAVS,
122

    
123
    /* various pcm "codecs" */
124
    CODEC_ID_PCM_S16LE= 0x10000,
125
    CODEC_ID_PCM_S16BE,
126
    CODEC_ID_PCM_U16LE,
127
    CODEC_ID_PCM_U16BE,
128
    CODEC_ID_PCM_S8,
129
    CODEC_ID_PCM_U8,
130
    CODEC_ID_PCM_MULAW,
131
    CODEC_ID_PCM_ALAW,
132
    CODEC_ID_PCM_S32LE,
133
    CODEC_ID_PCM_S32BE,
134
    CODEC_ID_PCM_U32LE,
135
    CODEC_ID_PCM_U32BE,
136
    CODEC_ID_PCM_S24LE,
137
    CODEC_ID_PCM_S24BE,
138
    CODEC_ID_PCM_U24LE,
139
    CODEC_ID_PCM_U24BE,
140
    CODEC_ID_PCM_S24DAUD,
141

    
142
    /* various adpcm codecs */
143
    CODEC_ID_ADPCM_IMA_QT= 0x11000,
144
    CODEC_ID_ADPCM_IMA_WAV,
145
    CODEC_ID_ADPCM_IMA_DK3,
146
    CODEC_ID_ADPCM_IMA_DK4,
147
    CODEC_ID_ADPCM_IMA_WS,
148
    CODEC_ID_ADPCM_IMA_SMJPEG,
149
    CODEC_ID_ADPCM_MS,
150
    CODEC_ID_ADPCM_4XM,
151
    CODEC_ID_ADPCM_XA,
152
    CODEC_ID_ADPCM_ADX,
153
    CODEC_ID_ADPCM_EA,
154
    CODEC_ID_ADPCM_G726,
155
    CODEC_ID_ADPCM_CT,
156
    CODEC_ID_ADPCM_SWF,
157
    CODEC_ID_ADPCM_YAMAHA,
158
    CODEC_ID_ADPCM_SBPRO_4,
159
    CODEC_ID_ADPCM_SBPRO_3,
160
    CODEC_ID_ADPCM_SBPRO_2,
161

    
162
    /* AMR */
163
    CODEC_ID_AMR_NB= 0x12000,
164
    CODEC_ID_AMR_WB,
165

    
166
    /* RealAudio codecs*/
167
    CODEC_ID_RA_144= 0x13000,
168
    CODEC_ID_RA_288,
169

    
170
    /* various DPCM codecs */
171
    CODEC_ID_ROQ_DPCM= 0x14000,
172
    CODEC_ID_INTERPLAY_DPCM,
173
    CODEC_ID_XAN_DPCM,
174
    CODEC_ID_SOL_DPCM,
175

    
176
    CODEC_ID_MP2= 0x15000,
177
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
178
    CODEC_ID_AAC,
179
    CODEC_ID_MPEG4AAC,
180
    CODEC_ID_AC3,
181
    CODEC_ID_DTS,
182
    CODEC_ID_VORBIS,
183
    CODEC_ID_DVAUDIO,
184
    CODEC_ID_WMAV1,
185
    CODEC_ID_WMAV2,
186
    CODEC_ID_MACE3,
187
    CODEC_ID_MACE6,
188
    CODEC_ID_VMDAUDIO,
189
    CODEC_ID_SONIC,
190
    CODEC_ID_SONIC_LS,
191
    CODEC_ID_FLAC,
192
    CODEC_ID_MP3ADU,
193
    CODEC_ID_MP3ON4,
194
    CODEC_ID_SHORTEN,
195
    CODEC_ID_ALAC,
196
    CODEC_ID_WESTWOOD_SND1,
197
    CODEC_ID_GSM,
198
    CODEC_ID_QDM2,
199
    CODEC_ID_COOK,
200
    CODEC_ID_TRUESPEECH,
201
    CODEC_ID_TTA,
202
    CODEC_ID_SMACKAUDIO,
203

    
204
    CODEC_ID_OGGTHEORA= 0x16000,
205

    
206
    /* subtitle codecs */
207
    CODEC_ID_DVD_SUBTITLE= 0x17000,
208
    CODEC_ID_DVB_SUBTITLE,
209

    
210
    CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
211
                         stream (only used by libavformat) */
212
};
213

    
214
/* CODEC_ID_MP3LAME is absolete */
215
#define CODEC_ID_MP3LAME CODEC_ID_MP3
216

    
217
enum CodecType {
218
    CODEC_TYPE_UNKNOWN = -1,
219
    CODEC_TYPE_VIDEO,
220
    CODEC_TYPE_AUDIO,
221
    CODEC_TYPE_DATA,
222
    CODEC_TYPE_SUBTITLE,
223
};
224

    
225
/* currently unused, may be used if 24/32 bits samples ever supported */
226
/* all in native endian */
227
enum SampleFormat {
228
    SAMPLE_FMT_NONE = -1,
229
    SAMPLE_FMT_U8,              ///< unsigned 8 bits
230
    SAMPLE_FMT_S16,             ///< signed 16 bits
231
    SAMPLE_FMT_S24,             ///< signed 24 bits
232
    SAMPLE_FMT_S32,             ///< signed 32 bits
233
    SAMPLE_FMT_FLT,             ///< float
234
};
235

    
236
/* in bytes */
237
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
238

    
239
/**
240
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
241
 * this is mainly needed because some optimized bitstream readers read
242
 * 32 or 64 bit at once and could read over the end<br>
243
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
244
 * MPEG bitstreams could cause overread and segfault
245
 */
246
#define FF_INPUT_BUFFER_PADDING_SIZE 8
247

    
248
/**
249
 * minimum encoding buffer size.
250
 * used to avoid some checks during header writing
251
 */
252
#define FF_MIN_BUFFER_SIZE 16384
253

    
254
/* motion estimation type, EPZS by default */
255
enum Motion_Est_ID {
256
    ME_ZERO = 1,
257
    ME_FULL,
258
    ME_LOG,
259
    ME_PHODS,
260
    ME_EPZS,
261
    ME_X1,
262
    ME_HEX,
263
    ME_UMH,
264
    ME_ITER,
265
};
266

    
267
enum AVDiscard{
268
//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
269
    AVDISCARD_NONE   =-16, ///< discard nothing
270
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
271
    AVDISCARD_NONREF =  8, ///< discard all non reference
272
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
273
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
274
    AVDISCARD_ALL    = 48, ///< discard all
275
};
276

    
277
typedef struct RcOverride{
278
    int start_frame;
279
    int end_frame;
280
    int qscale; // if this is 0 then quality_factor will be used instead
281
    float quality_factor;
282
} RcOverride;
283

    
284
#define FF_MAX_B_FRAMES 16
285

    
286
/* encoding support
287
   these flags can be passed in AVCodecContext.flags before initing
288
   Note: not everything is supported yet.
289
*/
290

    
291
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale
292
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
293
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC
294
#define CODEC_FLAG_GMC    0x0020  ///< use GMC
295
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0>
296
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning
297
/* parent program gurantees that the input for b-frame containing streams is not written to
298
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
299
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
300
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode
301
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode
302
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
303
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale
304
#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
305
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding
306
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead
307
                                            of only at frame boundaries */
308
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization
309
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
310
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
311
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan
312
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization
313
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe
314
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct)
315
/* Fx : Flag for h263+ extra options */
316
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
317
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
318
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector
319
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
320
#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
321
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
322
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
323
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
324
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
325
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
326
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
327
#define CODEC_FLAG_CLOSED_GOP     ((int)0x80000000)
328
#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
329
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
330
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< skip bitstream encoding
331
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< place global headers at every keyframe instead of in extradata
332
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow b-frames to be used as references
333
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for b-frames
334
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 multiple references per partition
335
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
336
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
337
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
338
#define CODEC_FLAG2_BRDO          0x00000400 ///< b-frame rate-distortion optimization
339
#define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< use MPEG-2 intra VLC table
340
#define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
341

    
342
/* Unsupported options :
343
 *              Syntax Arithmetic coding (SAC)
344
 *              Reference Picture Selection
345
 *              Independant Segment Decoding */
346
/* /Fx */
347
/* codec capabilities */
348

    
349
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
350
/**
351
 * Codec uses get_buffer() for allocating buffers.
352
 * direct rendering method 1
353
 */
354
#define CODEC_CAP_DR1             0x0002
355
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
356
   used */
357
#define CODEC_CAP_PARSE_ONLY      0x0004
358
#define CODEC_CAP_TRUNCATED       0x0008
359
/* codec can export data for HW decoding (XvMC) */
360
#define CODEC_CAP_HWACCEL         0x0010
361
/**
362
 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
363
 * if this is not set, the codec is guranteed to never be feeded with NULL data
364
 */
365
#define CODEC_CAP_DELAY           0x0020
366
/**
367
 * Codec can be fed a final frame with a smaller size.
368
 * This can be used to prevent truncation of the last audio samples.
369
 */
370
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
371

    
372
//the following defines may change, don't expect compatibility if you use them
373
#define MB_TYPE_INTRA4x4   0x0001
374
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
375
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
376
#define MB_TYPE_16x16      0x0008
377
#define MB_TYPE_16x8       0x0010
378
#define MB_TYPE_8x16       0x0020
379
#define MB_TYPE_8x8        0x0040
380
#define MB_TYPE_INTERLACED 0x0080
381
#define MB_TYPE_DIRECT2     0x0100 //FIXME
382
#define MB_TYPE_ACPRED     0x0200
383
#define MB_TYPE_GMC        0x0400
384
#define MB_TYPE_SKIP       0x0800
385
#define MB_TYPE_P0L0       0x1000
386
#define MB_TYPE_P1L0       0x2000
387
#define MB_TYPE_P0L1       0x4000
388
#define MB_TYPE_P1L1       0x8000
389
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
390
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
391
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
392
#define MB_TYPE_QUANT      0x00010000
393
#define MB_TYPE_CBP        0x00020000
394
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
395

    
396
/**
397
 * Pan Scan area.
398
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
399
 */
400
typedef struct AVPanScan{
401
    /**
402
     * id.
403
     * - encoding: set by user.
404
     * - decoding: set by lavc
405
     */
406
    int id;
407

    
408
    /**
409
     * width and height in 1/16 pel
410
     * - encoding: set by user.
411
     * - decoding: set by lavc
412
     */
413
    int width;
414
    int height;
415

    
416
    /**
417
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
418
     * - encoding: set by user.
419
     * - decoding: set by lavc
420
     */
421
    int16_t position[3][2];
422
}AVPanScan;
423

    
424
#define FF_COMMON_FRAME \
425
    /**\
426
     * pointer to the picture planes.\
427
     * this might be different from the first allocated byte\
428
     * - encoding: \
429
     * - decoding: \
430
     */\
431
    uint8_t *data[4];\
432
    int linesize[4];\
433
    /**\
434
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
435
     * this isn't used by lavc unless the default get/release_buffer() is used\
436
     * - encoding: \
437
     * - decoding: \
438
     */\
439
    uint8_t *base[4];\
440
    /**\
441
     * 1 -> keyframe, 0-> not\
442
     * - encoding: set by lavc\
443
     * - decoding: set by lavc\
444
     */\
445
    int key_frame;\
446
\
447
    /**\
448
     * picture type of the frame, see ?_TYPE below.\
449
     * - encoding: set by lavc for coded_picture (and set by user for input)\
450
     * - decoding: set by lavc\
451
     */\
452
    int pict_type;\
453
\
454
    /**\
455
     * presentation timestamp in time_base units (time when frame should be shown to user)\
456
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
457
     * - encoding: MUST be set by user\
458
     * - decoding: set by lavc\
459
     */\
460
    int64_t pts;\
461
\
462
    /**\
463
     * picture number in bitstream order.\
464
     * - encoding: set by\
465
     * - decoding: set by lavc\
466
     */\
467
    int coded_picture_number;\
468
    /**\
469
     * picture number in display order.\
470
     * - encoding: set by\
471
     * - decoding: set by lavc\
472
     */\
473
    int display_picture_number;\
474
\
475
    /**\
476
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
477
     * - encoding: set by lavc for coded_picture (and set by user for input)\
478
     * - decoding: set by lavc\
479
     */\
480
    int quality; \
481
\
482
    /**\
483
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
484
     * set to INT_MAX if the buffer has not been used yet \
485
     * - encoding: unused\
486
     * - decoding: MUST be set by get_buffer()\
487
     */\
488
    int age;\
489
\
490
    /**\
491
     * is this picture used as reference\
492
     * - encoding: unused\
493
     * - decoding: set by lavc (before get_buffer() call))\
494
     */\
495
    int reference;\
496
\
497
    /**\
498
     * QP table\
499
     * - encoding: unused\
500
     * - decoding: set by lavc\
501
     */\
502
    int8_t *qscale_table;\
503
    /**\
504
     * QP store stride\
505
     * - encoding: unused\
506
     * - decoding: set by lavc\
507
     */\
508
    int qstride;\
509
\
510
    /**\
511
     * mbskip_table[mb]>=1 if MB didnt change\
512
     * stride= mb_width = (width+15)>>4\
513
     * - encoding: unused\
514
     * - decoding: set by lavc\
515
     */\
516
    uint8_t *mbskip_table;\
517
\
518
    /**\
519
     * Motion vector table.\
520
     * @code\
521
     * example:\
522
     * int mv_sample_log2= 4 - motion_subsample_log2;\
523
     * int mb_width= (width+15)>>4;\
524
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
525
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
526
     * @endcode\
527
     * - encoding: set by user\
528
     * - decoding: set by lavc\
529
     */\
530
    int16_t (*motion_val[2])[2];\
531
\
532
    /**\
533
     * Macroblock type table\
534
     * mb_type_base + mb_width + 2\
535
     * - encoding: set by user\
536
     * - decoding: set by lavc\
537
     */\
538
    uint32_t *mb_type;\
539
\
540
    /**\
541
     * log2 of the size of the block which a single vector in motion_val represents: \
542
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
543
     * - encoding: unused\
544
     * - decoding: set by lavc\
545
     */\
546
    uint8_t motion_subsample_log2;\
547
\
548
    /**\
549
     * for some private data of the user\
550
     * - encoding: unused\
551
     * - decoding: set by user\
552
     */\
553
    void *opaque;\
554
\
555
    /**\
556
     * error\
557
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
558
     * - decoding: unused\
559
     */\
560
    uint64_t error[4];\
561
\
562
    /**\
563
     * type of the buffer (to keep track of who has to dealloc data[*])\
564
     * - encoding: set by the one who allocs it\
565
     * - decoding: set by the one who allocs it\
566
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
567
     */\
568
    int type;\
569
    \
570
    /**\
571
     * when decoding, this signal how much the picture must be delayed.\
572
     * extra_delay = repeat_pict / (2*fps)\
573
     * - encoding: unused\
574
     * - decoding: set by lavc\
575
     */\
576
    int repeat_pict;\
577
    \
578
    /**\
579
     * \
580
     */\
581
    int qscale_type;\
582
    \
583
    /**\
584
     * The content of the picture is interlaced.\
585
     * - encoding: set by user\
586
     * - decoding: set by lavc (default 0)\
587
     */\
588
    int interlaced_frame;\
589
    \
590
    /**\
591
     * if the content is interlaced, is top field displayed first.\
592
     * - encoding: set by user\
593
     * - decoding: set by lavc\
594
     */\
595
    int top_field_first;\
596
    \
597
    /**\
598
     * Pan scan.\
599
     * - encoding: set by user\
600
     * - decoding: set by lavc\
601
     */\
602
    AVPanScan *pan_scan;\
603
    \
604
    /**\
605
     * tell user application that palette has changed from previous frame.\
606
     * - encoding: ??? (no palette-enabled encoder yet)\
607
     * - decoding: set by lavc (default 0)\
608
     */\
609
    int palette_has_changed;\
610
    \
611
    /**\
612
     * Codec suggestion on buffer type if != 0\
613
     * - encoding: unused\
614
     * - decoding: set by lavc (before get_buffer() call))\
615
     */\
616
    int buffer_hints;\
617
\
618
    /**\
619
     * DCT coeffitients\
620
     * - encoding: unused\
621
     * - decoding: set by lavc\
622
     */\
623
    short *dct_coeff;\
624
\
625
    /**\
626
     * Motion referece frame index\
627
     * - encoding: set by user\
628
     * - decoding: set by lavc\
629
     */\
630
    int8_t *ref_index[2];
631

    
632
#define FF_QSCALE_TYPE_MPEG1 0
633
#define FF_QSCALE_TYPE_MPEG2 1
634
#define FF_QSCALE_TYPE_H264  2
635

    
636
#define FF_BUFFER_TYPE_INTERNAL 1
637
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
638
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
639
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
640

    
641

    
642
#define FF_I_TYPE 1 // Intra
643
#define FF_P_TYPE 2 // Predicted
644
#define FF_B_TYPE 3 // Bi-dir predicted
645
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
646
#define FF_SI_TYPE 5
647
#define FF_SP_TYPE 6
648

    
649
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
650
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
651
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
652
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
653

    
654
/**
655
 * Audio Video Frame.
656
 */
657
typedef struct AVFrame {
658
    FF_COMMON_FRAME
659
} AVFrame;
660

    
661
#define DEFAULT_FRAME_RATE_BASE 1001000
662

    
663
/**
664
 * Used by av_log
665
 */
666
typedef struct AVCLASS AVClass;
667
struct AVCLASS {
668
    const char* class_name;
669
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
670
                                        or AVFormatContext, which begin with an AVClass.
671
                                        Needed because av_log is in libavcodec and has no visibility
672
                                        of AVIn/OutputFormat */
673
    struct AVOption *option;
674
};
675

    
676
/**
677
 * main external api structure.
678
 */
679
typedef struct AVCodecContext {
680
    /**
681
     * Info on struct for av_log
682
     * - set by avcodec_alloc_context
683
     */
684
    AVClass *av_class;
685
    /**
686
     * the average bitrate.
687
     * - encoding: set by user. unused for constant quantizer encoding
688
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
689
     */
690
    int bit_rate;
691

    
692
    /**
693
     * number of bits the bitstream is allowed to diverge from the reference.
694
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
695
     * - encoding: set by user. unused for constant quantizer encoding
696
     * - decoding: unused
697
     */
698
    int bit_rate_tolerance;
699

    
700
    /**
701
     * CODEC_FLAG_*.
702
     * - encoding: set by user.
703
     * - decoding: set by user.
704
     */
705
    int flags;
706

    
707
    /**
708
     * some codecs needs additionnal format info. It is stored here
709
     * - encoding: set by user.
710
     * - decoding: set by lavc. (FIXME is this ok?)
711
     */
712
    int sub_id;
713

    
714
    /**
715
     * motion estimation algorithm used for video coding.
716
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
717
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
718
     * - encoding: MUST be set by user.
719
     * - decoding: unused
720
     */
721
    int me_method;
722

    
723
    /**
724
     * some codecs need / can use extra-data like huffman tables.
725
     * mjpeg: huffman tables
726
     * rv10: additional flags
727
     * mpeg4: global headers (they can be in the bitstream or here)
728
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
729
     * then extradata_size to avoid prolems if its read with the bitstream reader
730
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
731
     * - encoding: set/allocated/freed by lavc.
732
     * - decoding: set/allocated/freed by user.
733
     */
734
    void *extradata;
735
    int extradata_size;
736

    
737
    /**
738
     * this is the fundamental unit of time (in seconds) in terms
739
     * of which frame timestamps are represented. for fixed-fps content,
740
     * timebase should be 1/framerate and timestamp increments should be
741
     * identically 1.
742
     * - encoding: MUST be set by user
743
     * - decoding: set by lavc.
744
     */
745
    AVRational time_base;
746

    
747
    /* video only */
748
    /**
749
     * picture width / height.
750
     * - encoding: MUST be set by user.
751
     * - decoding: set by lavc.
752
     * Note, for compatibility its possible to set this instead of
753
     * coded_width/height before decoding
754
     */
755
    int width, height;
756

    
757
#define FF_ASPECT_EXTENDED 15
758

    
759
    /**
760
     * the number of pictures in a group of pitures, or 0 for intra_only.
761
     * - encoding: set by user.
762
     * - decoding: unused
763
     */
764
    int gop_size;
765

    
766
    /**
767
     * pixel format, see PIX_FMT_xxx.
768
     * - encoding: set by user.
769
     * - decoding: set by lavc.
770
     */
771
    enum PixelFormat pix_fmt;
772

    
773
    /**
774
     * Frame rate emulation. If not zero lower layer (i.e. format handler)
775
     * has to read frames at native frame rate.
776
     * - encoding: set by user.
777
     * - decoding: unused.
778
     */
779
    int rate_emu;
780

    
781
    /**
782
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
783
     * decoder to draw an horizontal band. It improve cache usage. Not
784
     * all codecs can do that. You must check the codec capabilities
785
     * before
786
     * - encoding: unused
787
     * - decoding: set by user.
788
     * @param height the height of the slice
789
     * @param y the y position of the slice
790
     * @param type 1->top field, 2->bottom field, 3->frame
791
     * @param offset offset into the AVFrame.data from which the slice should be read
792
     */
793
    void (*draw_horiz_band)(struct AVCodecContext *s,
794
                            const AVFrame *src, int offset[4],
795
                            int y, int type, int height);
796

    
797
    /* audio only */
798
    int sample_rate; ///< samples per sec
799
    int channels;
800

    
801
    /**
802
     * audio sample format.
803
     * - encoding: set by user.
804
     * - decoding: set by lavc.
805
     */
806
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused
807

    
808
    /* the following data should not be initialized */
809
    /**
810
     * samples per packet. initialized when calling 'init'
811
     */
812
    int frame_size;
813
    int frame_number;   ///< audio or video frame number
814
    int real_pict_num;  ///< returns the real picture number of previous encoded frame
815

    
816
    /**
817
     * number of frames the decoded output will be delayed relative to
818
     * the encoded input.
819
     * - encoding: set by lavc.
820
     * - decoding: unused
821
     */
822
    int delay;
823

    
824
    /* - encoding parameters */
825
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
826
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
827

    
828
    /**
829
     * minimum quantizer.
830
     * - encoding: set by user.
831
     * - decoding: unused
832
     */
833
    int qmin;
834

    
835
    /**
836
     * maximum quantizer.
837
     * - encoding: set by user.
838
     * - decoding: unused
839
     */
840
    int qmax;
841

    
842
    /**
843
     * maximum quantizer difference etween frames.
844
     * - encoding: set by user.
845
     * - decoding: unused
846
     */
847
    int max_qdiff;
848

    
849
    /**
850
     * maximum number of b frames between non b frames.
851
     * note: the output will be delayed by max_b_frames+1 relative to the input
852
     * - encoding: set by user.
853
     * - decoding: unused
854
     */
855
    int max_b_frames;
856

    
857
    /**
858
     * qscale factor between ip and b frames.
859
     * - encoding: set by user.
860
     * - decoding: unused
861
     */
862
    float b_quant_factor;
863

    
864
    /** obsolete FIXME remove */
865
    int rc_strategy;
866
#define FF_RC_STRATEGY_XVID 1
867

    
868
    int b_frame_strategy;
869

    
870
    /**
871
     * hurry up amount.
872
     * deprecated in favor of skip_idct and skip_frame
873
     * - encoding: unused
874
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
875
     */
876
    int hurry_up;
877

    
878
    struct AVCodec *codec;
879

    
880
    void *priv_data;
881

    
882
    /* unused, FIXME remove*/
883
    int rtp_mode;
884

    
885
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
886
                            /* do it's best to deliver a chunk with size    */
887
                            /* below rtp_payload_size, the chunk will start */
888
                            /* with a start code on some codecs like H.263  */
889
                            /* This doesn't take account of any particular  */
890
                            /* headers inside the transmited RTP payload    */
891

    
892

    
893
    /* The RTP callback: This function is called   */
894
    /* every time the encoder has a packet to send */
895
    /* Depends on the encoder if the data starts   */
896
    /* with a Start Code (it should) H.263 does.   */
897
    /* mb_nb contains the number of macroblocks    */
898
    /* encoded in the RTP payload                  */
899
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
900

    
901
    /* statistics, used for 2-pass encoding */
902
    int mv_bits;
903
    int header_bits;
904
    int i_tex_bits;
905
    int p_tex_bits;
906
    int i_count;
907
    int p_count;
908
    int skip_count;
909
    int misc_bits;
910

    
911
    /**
912
     * number of bits used for the previously encoded frame.
913
     * - encoding: set by lavc
914
     * - decoding: unused
915
     */
916
    int frame_bits;
917

    
918
    /**
919
     * private data of the user, can be used to carry app specific stuff.
920
     * - encoding: set by user
921
     * - decoding: set by user
922
     */
923
    void *opaque;
924

    
925
    char codec_name[32];
926
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
927
    enum CodecID codec_id; /* see CODEC_ID_xxx */
928

    
929
    /**
930
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
931
     * this is used to workaround some encoder bugs
932
     * - encoding: set by user, if not then the default based on codec_id will be used
933
     * - decoding: set by user, will be converted to upper case by lavc during init
934
     */
935
    unsigned int codec_tag;
936

    
937
    /**
938
     * workaround bugs in encoders which sometimes cannot be detected automatically.
939
     * - encoding: set by user
940
     * - decoding: set by user
941
     */
942
    int workaround_bugs;
943
#define FF_BUG_AUTODETECT       1  ///< autodetection
944
#define FF_BUG_OLD_MSMPEG4      2
945
#define FF_BUG_XVID_ILACE       4
946
#define FF_BUG_UMP4             8
947
#define FF_BUG_NO_PADDING       16
948
#define FF_BUG_AMV              32
949
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
950
#define FF_BUG_QPEL_CHROMA      64
951
#define FF_BUG_STD_QPEL         128
952
#define FF_BUG_QPEL_CHROMA2     256
953
#define FF_BUG_DIRECT_BLOCKSIZE 512
954
#define FF_BUG_EDGE             1024
955
#define FF_BUG_HPEL_CHROMA      2048
956
#define FF_BUG_DC_CLIP          4096
957
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
958
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
959

    
960
    /**
961
     * luma single coeff elimination threshold.
962
     * - encoding: set by user
963
     * - decoding: unused
964
     */
965
    int luma_elim_threshold;
966

    
967
    /**
968
     * chroma single coeff elimination threshold.
969
     * - encoding: set by user
970
     * - decoding: unused
971
     */
972
    int chroma_elim_threshold;
973

    
974
    /**
975
     * strictly follow the std (MPEG4, ...).
976
     * - encoding: set by user
977
     * - decoding: unused
978
     */
979
    int strict_std_compliance;
980
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
981
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
982
#define FF_COMPLIANCE_NORMAL        0
983
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
984
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
985

    
986
    /**
987
     * qscale offset between ip and b frames.
988
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
989
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
990
     * - encoding: set by user.
991
     * - decoding: unused
992
     */
993
    float b_quant_offset;
994

    
995
    /**
996
     * error resilience higher values will detect more errors but may missdetect
997
     * some more or less valid parts as errors.
998
     * - encoding: unused
999
     * - decoding: set by user
1000
     */
1001
    int error_resilience;
1002
#define FF_ER_CAREFUL         1
1003
#define FF_ER_COMPLIANT       2
1004
#define FF_ER_AGGRESSIVE      3
1005
#define FF_ER_VERY_AGGRESSIVE 4
1006

    
1007
    /**
1008
     * called at the beginning of each frame to get a buffer for it.
1009
     * if pic.reference is set then the frame will be read later by lavc
1010
     * avcodec_align_dimensions() should be used to find the required width and
1011
     * height, as they normally need to be rounded up to the next multiple of 16
1012
     * - encoding: unused
1013
     * - decoding: set by lavc, user can override
1014
     */
1015
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1016

    
1017
    /**
1018
     * called to release buffers which where allocated with get_buffer.
1019
     * a released buffer can be reused in get_buffer()
1020
     * pic.data[*] must be set to NULL
1021
     * - encoding: unused
1022
     * - decoding: set by lavc, user can override
1023
     */
1024
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1025

    
1026
    /**
1027
     * if 1 the stream has a 1 frame delay during decoding.
1028
     * - encoding: set by lavc
1029
     * - decoding: set by lavc
1030
     */
1031
    int has_b_frames;
1032

    
1033
    /**
1034
     * number of bytes per packet if constant and known or 0
1035
     * used by some WAV based audio codecs
1036
     */
1037
    int block_align;
1038

    
1039
    int parse_only; /* - decoding only: if true, only parsing is done
1040
                       (function avcodec_parse_frame()). The frame
1041
                       data is returned. Only MPEG codecs support this now. */
1042

    
1043
    /**
1044
     * 0-> h263 quant 1-> mpeg quant.
1045
     * - encoding: set by user.
1046
     * - decoding: unused
1047
     */
1048
    int mpeg_quant;
1049

    
1050
    /**
1051
     * pass1 encoding statistics output buffer.
1052
     * - encoding: set by lavc
1053
     * - decoding: unused
1054
     */
1055
    char *stats_out;
1056

    
1057
    /**
1058
     * pass2 encoding statistics input buffer.
1059
     * concatenated stuff from stats_out of pass1 should be placed here
1060
     * - encoding: allocated/set/freed by user
1061
     * - decoding: unused
1062
     */
1063
    char *stats_in;
1064

    
1065
    /**
1066
     * ratecontrol qmin qmax limiting method.
1067
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1068
     * - encoding: set by user.
1069
     * - decoding: unused
1070
     */
1071
    float rc_qsquish;
1072

    
1073
    float rc_qmod_amp;
1074
    int rc_qmod_freq;
1075

    
1076
    /**
1077
     * ratecontrol override, see RcOverride.
1078
     * - encoding: allocated/set/freed by user.
1079
     * - decoding: unused
1080
     */
1081
    RcOverride *rc_override;
1082
    int rc_override_count;
1083

    
1084
    /**
1085
     * rate control equation.
1086
     * - encoding: set by user
1087
     * - decoding: unused
1088
     */
1089
    char *rc_eq;
1090

    
1091
    /**
1092
     * maximum bitrate.
1093
     * - encoding: set by user.
1094
     * - decoding: unused
1095
     */
1096
    int rc_max_rate;
1097

    
1098
    /**
1099
     * minimum bitrate.
1100
     * - encoding: set by user.
1101
     * - decoding: unused
1102
     */
1103
    int rc_min_rate;
1104

    
1105
    /**
1106
     * decoder bitstream buffer size.
1107
     * - encoding: set by user.
1108
     * - decoding: unused
1109
     */
1110
    int rc_buffer_size;
1111
    float rc_buffer_aggressivity;
1112

    
1113
    /**
1114
     * qscale factor between p and i frames.
1115
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1116
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1117
     * - encoding: set by user.
1118
     * - decoding: unused
1119
     */
1120
    float i_quant_factor;
1121

    
1122
    /**
1123
     * qscale offset between p and i frames.
1124
     * - encoding: set by user.
1125
     * - decoding: unused
1126
     */
1127
    float i_quant_offset;
1128

    
1129
    /**
1130
     * initial complexity for pass1 ratecontrol.
1131
     * - encoding: set by user.
1132
     * - decoding: unused
1133
     */
1134
    float rc_initial_cplx;
1135

    
1136
    /**
1137
     * dct algorithm, see FF_DCT_* below.
1138
     * - encoding: set by user
1139
     * - decoding: unused
1140
     */
1141
    int dct_algo;
1142
#define FF_DCT_AUTO    0
1143
#define FF_DCT_FASTINT 1
1144
#define FF_DCT_INT     2
1145
#define FF_DCT_MMX     3
1146
#define FF_DCT_MLIB    4
1147
#define FF_DCT_ALTIVEC 5
1148
#define FF_DCT_FAAN    6
1149

    
1150
    /**
1151
     * luminance masking (0-> disabled).
1152
     * - encoding: set by user
1153
     * - decoding: unused
1154
     */
1155
    float lumi_masking;
1156

    
1157
    /**
1158
     * temporary complexity masking (0-> disabled).
1159
     * - encoding: set by user
1160
     * - decoding: unused
1161
     */
1162
    float temporal_cplx_masking;
1163

    
1164
    /**
1165
     * spatial complexity masking (0-> disabled).
1166
     * - encoding: set by user
1167
     * - decoding: unused
1168
     */
1169
    float spatial_cplx_masking;
1170

    
1171
    /**
1172
     * p block masking (0-> disabled).
1173
     * - encoding: set by user
1174
     * - decoding: unused
1175
     */
1176
    float p_masking;
1177

    
1178
    /**
1179
     * darkness masking (0-> disabled).
1180
     * - encoding: set by user
1181
     * - decoding: unused
1182
     */
1183
    float dark_masking;
1184

    
1185

    
1186
    /* for binary compatibility */
1187
    int unused;
1188

    
1189
    /**
1190
     * idct algorithm, see FF_IDCT_* below.
1191
     * - encoding: set by user
1192
     * - decoding: set by user
1193
     */
1194
    int idct_algo;
1195
#define FF_IDCT_AUTO         0
1196
#define FF_IDCT_INT          1
1197
#define FF_IDCT_SIMPLE       2
1198
#define FF_IDCT_SIMPLEMMX    3
1199
#define FF_IDCT_LIBMPEG2MMX  4
1200
#define FF_IDCT_PS2          5
1201
#define FF_IDCT_MLIB         6
1202
#define FF_IDCT_ARM          7
1203
#define FF_IDCT_ALTIVEC      8
1204
#define FF_IDCT_SH4          9
1205
#define FF_IDCT_SIMPLEARM    10
1206
#define FF_IDCT_H264         11
1207
#define FF_IDCT_VP3          12
1208
#define FF_IDCT_IPP          13
1209
#define FF_IDCT_XVIDMMX      14
1210

    
1211
    /**
1212
     * slice count.
1213
     * - encoding: set by lavc
1214
     * - decoding: set by user (or 0)
1215
     */
1216
    int slice_count;
1217
    /**
1218
     * slice offsets in the frame in bytes.
1219
     * - encoding: set/allocated by lavc
1220
     * - decoding: set/allocated by user (or NULL)
1221
     */
1222
    int *slice_offset;
1223

    
1224
    /**
1225
     * error concealment flags.
1226
     * - encoding: unused
1227
     * - decoding: set by user
1228
     */
1229
    int error_concealment;
1230
#define FF_EC_GUESS_MVS   1
1231
#define FF_EC_DEBLOCK     2
1232

    
1233
    /**
1234
     * dsp_mask could be add used to disable unwanted CPU features
1235
     * CPU features (i.e. MMX, SSE. ...)
1236
     *
1237
     * with FORCE flag you may instead enable given CPU features
1238
     * (Dangerous: usable in case of misdetection, improper usage however will
1239
     * result into program crash)
1240
     */
1241
    unsigned dsp_mask;
1242
#define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1243
    /* lower 16 bits - CPU features */
1244
#ifdef HAVE_MMX
1245
#define FF_MM_MMX      0x0001 /* standard MMX */
1246
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1247
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1248
#define FF_MM_SSE      0x0008 /* SSE functions */
1249
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1250
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1251
#endif /* HAVE_MMX */
1252
#ifdef HAVE_IWMMXT
1253
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1254
#endif /* HAVE_IWMMXT */
1255

    
1256
    /**
1257
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1258
     * - encoding: set by lavc
1259
     * - decoding: set by user
1260
     */
1261
     int bits_per_sample;
1262

    
1263
    /**
1264
     * prediction method (needed for huffyuv).
1265
     * - encoding: set by user
1266
     * - decoding: unused
1267
     */
1268
     int prediction_method;
1269
#define FF_PRED_LEFT   0
1270
#define FF_PRED_PLANE  1
1271
#define FF_PRED_MEDIAN 2
1272

    
1273
    /**
1274
     * sample aspect ratio (0 if unknown).
1275
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1276
     * - encoding: set by user.
1277
     * - decoding: set by lavc.
1278
     */
1279
    AVRational sample_aspect_ratio;
1280

    
1281
    /**
1282
     * the picture in the bitstream.
1283
     * - encoding: set by lavc
1284
     * - decoding: set by lavc
1285
     */
1286
    AVFrame *coded_frame;
1287

    
1288
    /**
1289
     * debug.
1290
     * - encoding: set by user.
1291
     * - decoding: set by user.
1292
     */
1293
    int debug;
1294
#define FF_DEBUG_PICT_INFO 1
1295
#define FF_DEBUG_RC        2
1296
#define FF_DEBUG_BITSTREAM 4
1297
#define FF_DEBUG_MB_TYPE   8
1298
#define FF_DEBUG_QP        16
1299
#define FF_DEBUG_MV        32
1300
#define FF_DEBUG_DCT_COEFF 0x00000040
1301
#define FF_DEBUG_SKIP      0x00000080
1302
#define FF_DEBUG_STARTCODE 0x00000100
1303
#define FF_DEBUG_PTS       0x00000200
1304
#define FF_DEBUG_ER        0x00000400
1305
#define FF_DEBUG_MMCO      0x00000800
1306
#define FF_DEBUG_BUGS      0x00001000
1307
#define FF_DEBUG_VIS_QP    0x00002000
1308
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1309

    
1310
    /**
1311
     * debug.
1312
     * - encoding: set by user.
1313
     * - decoding: set by user.
1314
     */
1315
    int debug_mv;
1316
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1317
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1318
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1319

    
1320
    /**
1321
     * error.
1322
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1323
     * - decoding: unused
1324
     */
1325
    uint64_t error[4];
1326

    
1327
    /**
1328
     * minimum MB quantizer.
1329
     * - encoding: unused
1330
     * - decoding: unused
1331
     */
1332
    int mb_qmin;
1333

    
1334
    /**
1335
     * maximum MB quantizer.
1336
     * - encoding: unused
1337
     * - decoding: unused
1338
     */
1339
    int mb_qmax;
1340

    
1341
    /**
1342
     * motion estimation compare function.
1343
     * - encoding: set by user.
1344
     * - decoding: unused
1345
     */
1346
    int me_cmp;
1347
    /**
1348
     * subpixel motion estimation compare function.
1349
     * - encoding: set by user.
1350
     * - decoding: unused
1351
     */
1352
    int me_sub_cmp;
1353
    /**
1354
     * macroblock compare function (not supported yet).
1355
     * - encoding: set by user.
1356
     * - decoding: unused
1357
     */
1358
    int mb_cmp;
1359
    /**
1360
     * interlaced dct compare function
1361
     * - encoding: set by user.
1362
     * - decoding: unused
1363
     */
1364
    int ildct_cmp;
1365
#define FF_CMP_SAD  0
1366
#define FF_CMP_SSE  1
1367
#define FF_CMP_SATD 2
1368
#define FF_CMP_DCT  3
1369
#define FF_CMP_PSNR 4
1370
#define FF_CMP_BIT  5
1371
#define FF_CMP_RD   6
1372
#define FF_CMP_ZERO 7
1373
#define FF_CMP_VSAD 8
1374
#define FF_CMP_VSSE 9
1375
#define FF_CMP_NSSE 10
1376
#define FF_CMP_W53  11
1377
#define FF_CMP_W97  12
1378
#define FF_CMP_DCTMAX 13
1379
#define FF_CMP_DCT264 14
1380
#define FF_CMP_CHROMA 256
1381

    
1382
    /**
1383
     * ME diamond size & shape.
1384
     * - encoding: set by user.
1385
     * - decoding: unused
1386
     */
1387
    int dia_size;
1388

    
1389
    /**
1390
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1391
     * - encoding: set by user.
1392
     * - decoding: unused
1393
     */
1394
    int last_predictor_count;
1395

    
1396
    /**
1397
     * pre pass for motion estimation.
1398
     * - encoding: set by user.
1399
     * - decoding: unused
1400
     */
1401
    int pre_me;
1402

    
1403
    /**
1404
     * motion estimation pre pass compare function.
1405
     * - encoding: set by user.
1406
     * - decoding: unused
1407
     */
1408
    int me_pre_cmp;
1409

    
1410
    /**
1411
     * ME pre pass diamond size & shape.
1412
     * - encoding: set by user.
1413
     * - decoding: unused
1414
     */
1415
    int pre_dia_size;
1416

    
1417
    /**
1418
     * subpel ME quality.
1419
     * - encoding: set by user.
1420
     * - decoding: unused
1421
     */
1422
    int me_subpel_quality;
1423

    
1424
    /**
1425
     * callback to negotiate the pixelFormat.
1426
     * @param fmt is the list of formats which are supported by the codec,
1427
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1428
     * the first is allways the native one
1429
     * @return the choosen format
1430
     * - encoding: unused
1431
     * - decoding: set by user, if not set then the native format will always be choosen
1432
     */
1433
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1434

    
1435
    /**
1436
     * DTG active format information (additionnal aspect ratio
1437
     * information only used in DVB MPEG2 transport streams). 0 if
1438
     * not set.
1439
     *
1440
     * - encoding: unused.
1441
     * - decoding: set by decoder
1442
     */
1443
    int dtg_active_format;
1444
#define FF_DTG_AFD_SAME         8
1445
#define FF_DTG_AFD_4_3          9
1446
#define FF_DTG_AFD_16_9         10
1447
#define FF_DTG_AFD_14_9         11
1448
#define FF_DTG_AFD_4_3_SP_14_9  13
1449
#define FF_DTG_AFD_16_9_SP_14_9 14
1450
#define FF_DTG_AFD_SP_4_3       15
1451

    
1452
    /**
1453
     * Maximum motion estimation search range in subpel units.
1454
     * if 0 then no limit
1455
     *
1456
     * - encoding: set by user.
1457
     * - decoding: unused.
1458
     */
1459
    int me_range;
1460

    
1461
    /**
1462
     * intra quantizer bias.
1463
     * - encoding: set by user.
1464
     * - decoding: unused
1465
     */
1466
    int intra_quant_bias;
1467
#define FF_DEFAULT_QUANT_BIAS 999999
1468

    
1469
    /**
1470
     * inter quantizer bias.
1471
     * - encoding: set by user.
1472
     * - decoding: unused
1473
     */
1474
    int inter_quant_bias;
1475

    
1476
    /**
1477
     * color table ID.
1478
     * - encoding: unused.
1479
     * - decoding: which clrtable should be used for 8bit RGB images
1480
     *             table have to be stored somewhere FIXME
1481
     */
1482
    int color_table_id;
1483

    
1484
    /**
1485
     * internal_buffer count.
1486
     * Don't touch, used by lavc default_get_buffer()
1487
     */
1488
    int internal_buffer_count;
1489

    
1490
    /**
1491
     * internal_buffers.
1492
     * Don't touch, used by lavc default_get_buffer()
1493
     */
1494
    void *internal_buffer;
1495

    
1496
#define FF_LAMBDA_SHIFT 7
1497
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1498
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1499
#define FF_LAMBDA_MAX (256*128-1)
1500

    
1501
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1502
    /**
1503
     * global quality for codecs which cannot change it per frame.
1504
     * this should be proportional to MPEG1/2/4 qscale.
1505
     * - encoding: set by user.
1506
     * - decoding: unused
1507
     */
1508
    int global_quality;
1509

    
1510
#define FF_CODER_TYPE_VLC   0
1511
#define FF_CODER_TYPE_AC    1
1512
    /**
1513
     * coder type
1514
     * - encoding: set by user.
1515
     * - decoding: unused
1516
     */
1517
    int coder_type;
1518

    
1519
    /**
1520
     * context model
1521
     * - encoding: set by user.
1522
     * - decoding: unused
1523
     */
1524
    int context_model;
1525
#if 0
1526
    /**
1527
     *
1528
     * - encoding: unused
1529
     * - decoding: set by user.
1530
     */
1531
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1532
#endif
1533

    
1534
    /**
1535
     * slice flags
1536
     * - encoding: unused
1537
     * - decoding: set by user.
1538
     */
1539
    int slice_flags;
1540
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1541
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1542
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1543

    
1544
    /**
1545
     * XVideo Motion Acceleration
1546
     * - encoding: forbidden
1547
     * - decoding: set by decoder
1548
     */
1549
    int xvmc_acceleration;
1550

    
1551
    /**
1552
     * macroblock decision mode
1553
     * - encoding: set by user.
1554
     * - decoding: unused
1555
     */
1556
    int mb_decision;
1557
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1558
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1559
#define FF_MB_DECISION_RD     2        ///< rate distoration
1560

    
1561
    /**
1562
     * custom intra quantization matrix
1563
     * - encoding: set by user, can be NULL
1564
     * - decoding: set by lavc
1565
     */
1566
    uint16_t *intra_matrix;
1567

    
1568
    /**
1569
     * custom inter quantization matrix
1570
     * - encoding: set by user, can be NULL
1571
     * - decoding: set by lavc
1572
     */
1573
    uint16_t *inter_matrix;
1574

    
1575
    /**
1576
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1577
     * this is used to workaround some encoder bugs
1578
     * - encoding: unused
1579
     * - decoding: set by user, will be converted to upper case by lavc during init
1580
     */
1581
    unsigned int stream_codec_tag;
1582

    
1583
    /**
1584
     * scene change detection threshold.
1585
     * 0 is default, larger means fewer detected scene changes
1586
     * - encoding: set by user.
1587
     * - decoding: unused
1588
     */
1589
    int scenechange_threshold;
1590

    
1591
    /**
1592
     * minimum lagrange multipler
1593
     * - encoding: set by user.
1594
     * - decoding: unused
1595
     */
1596
    int lmin;
1597

    
1598
    /**
1599
     * maximum lagrange multipler
1600
     * - encoding: set by user.
1601
     * - decoding: unused
1602
     */
1603
    int lmax;
1604

    
1605
    /**
1606
     * Palette control structure
1607
     * - encoding: ??? (no palette-enabled encoder yet)
1608
     * - decoding: set by user.
1609
     */
1610
    struct AVPaletteControl *palctrl;
1611

    
1612
    /**
1613
     * noise reduction strength
1614
     * - encoding: set by user.
1615
     * - decoding: unused
1616
     */
1617
    int noise_reduction;
1618

    
1619
    /**
1620
     * called at the beginning of a frame to get cr buffer for it.
1621
     * buffer type (size, hints) must be the same. lavc won't check it.
1622
     * lavc will pass previous buffer in pic, function should return
1623
     * same buffer or new buffer with old frame "painted" into it.
1624
     * if pic.data[0] == NULL must behave like get_buffer().
1625
     * - encoding: unused
1626
     * - decoding: set by lavc, user can override
1627
     */
1628
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1629

    
1630
    /**
1631
     * number of bits which should be loaded into the rc buffer before decoding starts
1632
     * - encoding: set by user.
1633
     * - decoding: unused
1634
     */
1635
    int rc_initial_buffer_occupancy;
1636

    
1637
    /**
1638
     *
1639
     * - encoding: set by user.
1640
     * - decoding: unused
1641
     */
1642
    int inter_threshold;
1643

    
1644
    /**
1645
     * CODEC_FLAG2_*.
1646
     * - encoding: set by user.
1647
     * - decoding: set by user.
1648
     */
1649
    int flags2;
1650

    
1651
    /**
1652
     * simulates errors in the bitstream to test error concealment.
1653
     * - encoding: set by user.
1654
     * - decoding: unused.
1655
     */
1656
    int error_rate;
1657

    
1658
    /**
1659
     * MP3 antialias algorithm, see FF_AA_* below.
1660
     * - encoding: unused
1661
     * - decoding: set by user
1662
     */
1663
    int antialias_algo;
1664
#define FF_AA_AUTO    0
1665
#define FF_AA_FASTINT 1 //not implemented yet
1666
#define FF_AA_INT     2
1667
#define FF_AA_FLOAT   3
1668
    /**
1669
     * Quantizer noise shaping.
1670
     * - encoding: set by user
1671
     * - decoding: unused
1672
     */
1673
    int quantizer_noise_shaping;
1674

    
1675
    /**
1676
     * Thread count.
1677
     * is used to decide how many independant tasks should be passed to execute()
1678
     * - encoding: set by user
1679
     * - decoding: set by user
1680
     */
1681
    int thread_count;
1682

    
1683
    /**
1684
     * the codec may call this to execute several independant things. it will return only after
1685
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1686
     * default implementation will execute the parts serially
1687
     * @param count the number of things to execute
1688
     * - encoding: set by lavc, user can override
1689
     * - decoding: set by lavc, user can override
1690
     */
1691
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1692

    
1693
    /**
1694
     * Thread opaque.
1695
     * can be used by execute() to store some per AVCodecContext stuff.
1696
     * - encoding: set by execute()
1697
     * - decoding: set by execute()
1698
     */
1699
    void *thread_opaque;
1700

    
1701
    /**
1702
     * Motion estimation threshold. under which no motion estimation is
1703
     * performed, but instead the user specified motion vectors are used
1704
     *
1705
     * - encoding: set by user
1706
     * - decoding: unused
1707
     */
1708
     int me_threshold;
1709

    
1710
    /**
1711
     * Macroblock threshold. under which the user specified macroblock types will be used
1712
     * - encoding: set by user
1713
     * - decoding: unused
1714
     */
1715
     int mb_threshold;
1716

    
1717
    /**
1718
     * precision of the intra dc coefficient - 8.
1719
     * - encoding: set by user
1720
     * - decoding: unused
1721
     */
1722
     int intra_dc_precision;
1723

    
1724
    /**
1725
     * noise vs. sse weight for the nsse comparsion function.
1726
     * - encoding: set by user
1727
     * - decoding: unused
1728
     */
1729
     int nsse_weight;
1730

    
1731
    /**
1732
     * number of macroblock rows at the top which are skipped.
1733
     * - encoding: unused
1734
     * - decoding: set by user
1735
     */
1736
     int skip_top;
1737

    
1738
    /**
1739
     * number of macroblock rows at the bottom which are skipped.
1740
     * - encoding: unused
1741
     * - decoding: set by user
1742
     */
1743
     int skip_bottom;
1744

    
1745
    /**
1746
     * profile
1747
     * - encoding: set by user
1748
     * - decoding: set by lavc
1749
     */
1750
     int profile;
1751
#define FF_PROFILE_UNKNOWN -99
1752

    
1753
    /**
1754
     * level
1755
     * - encoding: set by user
1756
     * - decoding: set by lavc
1757
     */
1758
     int level;
1759
#define FF_LEVEL_UNKNOWN -99
1760

    
1761
    /**
1762
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1763
     * - encoding: unused
1764
     * - decoding: set by user
1765
     */
1766
     int lowres;
1767

    
1768
    /**
1769
     * bitsream width / height. may be different from width/height if lowres
1770
     * or other things are used
1771
     * - encoding: unused
1772
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1773
     */
1774
    int coded_width, coded_height;
1775

    
1776
    /**
1777
     * frame skip threshold
1778
     * - encoding: set by user
1779
     * - decoding: unused
1780
     */
1781
    int frame_skip_threshold;
1782

    
1783
    /**
1784
     * frame skip factor
1785
     * - encoding: set by user
1786
     * - decoding: unused
1787
     */
1788
    int frame_skip_factor;
1789

    
1790
    /**
1791
     * frame skip exponent
1792
     * - encoding: set by user
1793
     * - decoding: unused
1794
     */
1795
    int frame_skip_exp;
1796

    
1797
    /**
1798
     * frame skip comparission function
1799
     * - encoding: set by user.
1800
     * - decoding: unused
1801
     */
1802
    int frame_skip_cmp;
1803

    
1804
    /**
1805
     * border processing masking. raises the quantizer for mbs on the borders
1806
     * of the picture.
1807
     * - encoding: set by user
1808
     * - decoding: unused
1809
     */
1810
    float border_masking;
1811

    
1812
    /**
1813
     * minimum MB lagrange multipler.
1814
     * - encoding: set by user.
1815
     * - decoding: unused
1816
     */
1817
    int mb_lmin;
1818

    
1819
    /**
1820
     * maximum MB lagrange multipler.
1821
     * - encoding: set by user.
1822
     * - decoding: unused
1823
     */
1824
    int mb_lmax;
1825

    
1826
    /**
1827
     *
1828
     * - encoding: set by user.
1829
     * - decoding: unused
1830
     */
1831
    int me_penalty_compensation;
1832

    
1833
    /**
1834
     *
1835
     * - encoding: unused
1836
     * - decoding: set by user.
1837
     */
1838
    enum AVDiscard skip_loop_filter;
1839

    
1840
    /**
1841
     *
1842
     * - encoding: unused
1843
     * - decoding: set by user.
1844
     */
1845
    enum AVDiscard skip_idct;
1846

    
1847
    /**
1848
     *
1849
     * - encoding: unused
1850
     * - decoding: set by user.
1851
     */
1852
    enum AVDiscard skip_frame;
1853

    
1854
    /**
1855
     *
1856
     * - encoding: set by user.
1857
     * - decoding: unused
1858
     */
1859
    int bidir_refine;
1860

    
1861
    /**
1862
     *
1863
     * - encoding: set by user.
1864
     * - decoding: unused
1865
     */
1866
    int brd_scale;
1867

    
1868
    /**
1869
     * constant rate factor - quality-based VBR - values ~correspond to qps
1870
     * - encoding: set by user.
1871
     * - decoding: unused
1872
     */
1873
    int crf;
1874

    
1875
    /**
1876
     * constant quantization parameter rate control method
1877
     * - encoding: set by user.
1878
     * - decoding: unused
1879
     */
1880
    int cqp;
1881

    
1882
    /**
1883
     * minimum gop size
1884
     * - encoding: set by user.
1885
     * - decoding: unused
1886
     */
1887
    int keyint_min;
1888

    
1889
    /**
1890
     * number of reference frames
1891
     * - encoding: set by user.
1892
     * - decoding: unused
1893
     */
1894
    int refs;
1895

    
1896
    /**
1897
     * chroma qp offset from luma
1898
     * - encoding: set by user.
1899
     * - decoding: unused
1900
     */
1901
    int chromaoffset;
1902

    
1903
    /**
1904
     * influences how often b-frames are used
1905
     * - encoding: set by user.
1906
     * - decoding: unused
1907
     */
1908
    int bframebias;
1909

    
1910
    /**
1911
     * trellis RD quantization
1912
     * - encoding: set by user.
1913
     * - decoding: unused
1914
     */
1915
    int trellis;
1916

    
1917
    /**
1918
     * reduce fluctuations in qp (before curve compression)
1919
     * - encoding: set by user.
1920
     * - decoding: unused
1921
     */
1922
    float complexityblur;
1923

    
1924
    /**
1925
     * in-loop deblocking filter alphac0 parameter
1926
     * alpha is in the range -6...6
1927
     * - encoding: set by user.
1928
     * - decoding: unused
1929
     */
1930
    int deblockalpha;
1931

    
1932
    /**
1933
     * in-loop deblocking filter beta parameter
1934
     * beta is in the range -6...6
1935
     * - encoding: set by user.
1936
     * - decoding: unused
1937
     */
1938
    int deblockbeta;
1939

    
1940
    /**
1941
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1942
     * - encoding: set by user.
1943
     * - decoding: unused
1944
     */
1945
    int partitions;
1946
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1947
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1948
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1949
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1950
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1951

    
1952
    /**
1953
     * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1954
     * - encoding: set by user.
1955
     * - decoding: unused
1956
     */
1957
    int directpred;
1958

    
1959
    /**
1960
     * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1961
     * - encoding: set by user.
1962
     * - decoding: unused
1963
     */
1964
    int cutoff;
1965

    
1966
    /**
1967
     * multiplied by qscale for each frame and added to scene_change_score
1968
     * - encoding: set by user.
1969
     * - decoding: unused
1970
     */
1971
    int scenechange_factor;
1972

    
1973
    /**
1974
     *
1975
     * note: value depends upon the compare functin used for fullpel ME
1976
     * - encoding: set by user.
1977
     * - decoding: unused
1978
     */
1979
    int mv0_threshold;
1980

    
1981
    /**
1982
     * adjusts sensitivity of b_frame_strategy 1
1983
     * - encoding: set by user.
1984
     * - decoding: unused
1985
     */
1986
    int b_sensitivity;
1987

    
1988
    /**
1989
     * - encoding: set by user.
1990
     * - decoding: unused
1991
     */
1992
    int compression_level;
1993
#define FF_COMPRESSION_DEFAULT -1
1994

    
1995
    /**
1996
     * sets whether to use LPC mode - used by FLAC encoder
1997
     * - encoding: set by user.
1998
     * - decoding: unused.
1999
     */
2000
    int use_lpc;
2001

    
2002
    /**
2003
     * LPC coefficient precision - used by FLAC encoder
2004
     * - encoding: set by user.
2005
     * - decoding: unused.
2006
     */
2007
    int lpc_coeff_precision;
2008

    
2009
    /**
2010
     * - encoding: set by user.
2011
     * - decoding: unused.
2012
     */
2013
    int min_prediction_order;
2014

    
2015
    /**
2016
     * - encoding: set by user.
2017
     * - decoding: unused.
2018
     */
2019
    int max_prediction_order;
2020

    
2021
    /**
2022
     * search method for selecting prediction order
2023
     * - encoding: set by user.
2024
     * - decoding: unused.
2025
     */
2026
    int prediction_order_method;
2027

    
2028
    /**
2029
     * - encoding: set by user.
2030
     * - decoding: unused.
2031
     */
2032
    int min_partition_order;
2033

    
2034
    /**
2035
     * - encoding: set by user.
2036
     * - decoding: unused.
2037
     */
2038
    int max_partition_order;
2039
} AVCodecContext;
2040

    
2041
/**
2042
 * AVCodec.
2043
 */
2044
typedef struct AVCodec {
2045
    const char *name;
2046
    enum CodecType type;
2047
    enum CodecID id;
2048
    int priv_data_size;
2049
    int (*init)(AVCodecContext *);
2050
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2051
    int (*close)(AVCodecContext *);
2052
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2053
                  uint8_t *buf, int buf_size);
2054
    int capabilities;
2055
#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2056
    void *dummy; // FIXME remove next time we break binary compatibility
2057
#endif
2058
    struct AVCodec *next;
2059
    void (*flush)(AVCodecContext *);
2060
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2061
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2062
} AVCodec;
2063

    
2064
/**
2065
 * four components are given, that's all.
2066
 * the last component is alpha
2067
 */
2068
typedef struct AVPicture {
2069
    uint8_t *data[4];
2070
    int linesize[4];       ///< number of bytes per line
2071
} AVPicture;
2072

    
2073
/**
2074
 * AVPaletteControl
2075
 * This structure defines a method for communicating palette changes
2076
 * between and demuxer and a decoder.
2077
 */
2078
#define AVPALETTE_SIZE 1024
2079
#define AVPALETTE_COUNT 256
2080
typedef struct AVPaletteControl {
2081

    
2082
    /* demuxer sets this to 1 to indicate the palette has changed;
2083
     * decoder resets to 0 */
2084
    int palette_changed;
2085

    
2086
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2087
     * the individual palette components should be on a 8-bit scale; if
2088
     * the palette data comes from a IBM VGA native format, the component
2089
     * data is probably 6 bits in size and needs to be scaled */
2090
    unsigned int palette[AVPALETTE_COUNT];
2091

    
2092
} AVPaletteControl;
2093

    
2094
typedef struct AVSubtitleRect {
2095
    uint16_t x;
2096
    uint16_t y;
2097
    uint16_t w;
2098
    uint16_t h;
2099
    uint16_t nb_colors;
2100
    int linesize;
2101
    uint32_t *rgba_palette;
2102
    uint8_t *bitmap;
2103
} AVSubtitleRect;
2104

    
2105
typedef struct AVSubtitle {
2106
    uint16_t format; /* 0 = graphics */
2107
    uint32_t start_display_time; /* relative to packet pts, in ms */
2108
    uint32_t end_display_time; /* relative to packet pts, in ms */
2109
    uint32_t num_rects;
2110
    AVSubtitleRect *rects;
2111
} AVSubtitle;
2112

    
2113
extern AVCodec ac3_encoder;
2114
extern AVCodec mp2_encoder;
2115
extern AVCodec mp3lame_encoder;
2116
extern AVCodec oggvorbis_encoder;
2117
extern AVCodec oggtheora_encoder;
2118
extern AVCodec faac_encoder;
2119
extern AVCodec flac_encoder;
2120
extern AVCodec xvid_encoder;
2121
extern AVCodec mpeg1video_encoder;
2122
extern AVCodec mpeg2video_encoder;
2123
extern AVCodec h261_encoder;
2124
extern AVCodec h263_encoder;
2125
extern AVCodec h263p_encoder;
2126
extern AVCodec flv_encoder;
2127
extern AVCodec rv10_encoder;
2128
extern AVCodec rv20_encoder;
2129
extern AVCodec dvvideo_encoder;
2130
extern AVCodec mjpeg_encoder;
2131
extern AVCodec ljpeg_encoder;
2132
extern AVCodec jpegls_encoder;
2133
extern AVCodec png_encoder;
2134
extern AVCodec ppm_encoder;
2135
extern AVCodec pgm_encoder;
2136
extern AVCodec pgmyuv_encoder;
2137
extern AVCodec pbm_encoder;
2138
extern AVCodec pam_encoder;
2139
extern AVCodec mpeg4_encoder;
2140
extern AVCodec msmpeg4v1_encoder;
2141
extern AVCodec msmpeg4v2_encoder;
2142
extern AVCodec msmpeg4v3_encoder;
2143
extern AVCodec wmv1_encoder;
2144
extern AVCodec wmv2_encoder;
2145
extern AVCodec huffyuv_encoder;
2146
extern AVCodec ffvhuff_encoder;
2147
extern AVCodec h264_encoder;
2148
extern AVCodec asv1_encoder;
2149
extern AVCodec asv2_encoder;
2150
extern AVCodec vcr1_encoder;
2151
extern AVCodec ffv1_encoder;
2152
extern AVCodec snow_encoder;
2153
extern AVCodec mdec_encoder;
2154
extern AVCodec zlib_encoder;
2155
extern AVCodec sonic_encoder;
2156
extern AVCodec sonic_ls_encoder;
2157
extern AVCodec svq1_encoder;
2158
extern AVCodec x264_encoder;
2159

    
2160
extern AVCodec h263_decoder;
2161
extern AVCodec h261_decoder;
2162
extern AVCodec mpeg4_decoder;
2163
extern AVCodec msmpeg4v1_decoder;
2164
extern AVCodec msmpeg4v2_decoder;
2165
extern AVCodec msmpeg4v3_decoder;
2166
extern AVCodec wmv1_decoder;
2167
extern AVCodec wmv2_decoder;
2168
extern AVCodec vc1_decoder;
2169
extern AVCodec wmv3_decoder;
2170
extern AVCodec mpeg1video_decoder;
2171
extern AVCodec mpeg2video_decoder;
2172
extern AVCodec mpegvideo_decoder;
2173
extern AVCodec mpeg_xvmc_decoder;
2174
extern AVCodec h263i_decoder;
2175
extern AVCodec flv_decoder;
2176
extern AVCodec rv10_decoder;
2177
extern AVCodec rv20_decoder;
2178
extern AVCodec rv30_decoder;
2179
extern AVCodec rv40_decoder;
2180
extern AVCodec svq1_decoder;
2181
extern AVCodec svq3_decoder;
2182
extern AVCodec dvvideo_decoder;
2183
extern AVCodec wmav1_decoder;
2184
extern AVCodec wmav2_decoder;
2185
extern AVCodec mjpeg_decoder;
2186
extern AVCodec mjpegb_decoder;
2187
extern AVCodec sp5x_decoder;
2188
extern AVCodec png_decoder;
2189
extern AVCodec mp2_decoder;
2190
extern AVCodec mp3_decoder;
2191
extern AVCodec mp3adu_decoder;
2192
extern AVCodec mp3on4_decoder;
2193
extern AVCodec qdm2_decoder;
2194
extern AVCodec cook_decoder;
2195
extern AVCodec truespeech_decoder;
2196
extern AVCodec tta_decoder;
2197
extern AVCodec mace3_decoder;
2198
extern AVCodec mace6_decoder;
2199
extern AVCodec huffyuv_decoder;
2200
extern AVCodec ffvhuff_decoder;
2201
extern AVCodec oggvorbis_decoder;
2202
extern AVCodec oggtheora_decoder;
2203
extern AVCodec cyuv_decoder;
2204
extern AVCodec h264_decoder;
2205
extern AVCodec indeo3_decoder;
2206
extern AVCodec vp3_decoder;
2207
extern AVCodec theora_decoder;
2208
extern AVCodec amr_nb_decoder;
2209
extern AVCodec amr_nb_encoder;
2210
extern AVCodec amr_wb_encoder;
2211
extern AVCodec amr_wb_decoder;
2212
extern AVCodec aac_decoder;
2213
extern AVCodec mpeg4aac_decoder;
2214
extern AVCodec asv1_decoder;
2215
extern AVCodec asv2_decoder;
2216
extern AVCodec vcr1_decoder;
2217
extern AVCodec cljr_decoder;
2218
extern AVCodec ffv1_decoder;
2219
extern AVCodec snow_decoder;
2220
extern AVCodec fourxm_decoder;
2221
extern AVCodec mdec_decoder;
2222
extern AVCodec roq_decoder;
2223
extern AVCodec interplay_video_decoder;
2224
extern AVCodec xan_wc3_decoder;
2225
extern AVCodec rpza_decoder;
2226
extern AVCodec cinepak_decoder;
2227
extern AVCodec msrle_decoder;
2228
extern AVCodec msvideo1_decoder;
2229
extern AVCodec vqa_decoder;
2230
extern AVCodec idcin_decoder;
2231
extern AVCodec eightbps_decoder;
2232
extern AVCodec smc_decoder;
2233
extern AVCodec flic_decoder;
2234
extern AVCodec vmdvideo_decoder;
2235
extern AVCodec vmdaudio_decoder;
2236
extern AVCodec truemotion1_decoder;
2237
extern AVCodec truemotion2_decoder;
2238
extern AVCodec mszh_decoder;
2239
extern AVCodec zlib_decoder;
2240
extern AVCodec ra_144_decoder;
2241
extern AVCodec ra_288_decoder;
2242
extern AVCodec roq_dpcm_decoder;
2243
extern AVCodec interplay_dpcm_decoder;
2244
extern AVCodec xan_dpcm_decoder;
2245
extern AVCodec sol_dpcm_decoder;
2246
extern AVCodec sonic_decoder;
2247
extern AVCodec qtrle_decoder;
2248
extern AVCodec flac_decoder;
2249
extern AVCodec tscc_decoder;
2250
extern AVCodec cscd_decoder;
2251
extern AVCodec nuv_decoder;
2252
extern AVCodec ulti_decoder;
2253
extern AVCodec qdraw_decoder;
2254
extern AVCodec xl_decoder;
2255
extern AVCodec qpeg_decoder;
2256
extern AVCodec shorten_decoder;
2257
extern AVCodec loco_decoder;
2258
extern AVCodec wnv1_decoder;
2259
extern AVCodec aasc_decoder;
2260
extern AVCodec alac_decoder;
2261
extern AVCodec ws_snd1_decoder;
2262
extern AVCodec indeo2_decoder;
2263
extern AVCodec vorbis_decoder;
2264
extern AVCodec fraps_decoder;
2265
extern AVCodec libgsm_encoder;
2266
extern AVCodec libgsm_decoder;
2267
extern AVCodec bmp_decoder;
2268
extern AVCodec mmvideo_decoder;
2269
extern AVCodec zmbv_decoder;
2270
extern AVCodec avs_decoder;
2271
extern AVCodec smacker_decoder;
2272
extern AVCodec smackaud_decoder;
2273
extern AVCodec kmvc_decoder;
2274
extern AVCodec flashsv_decoder;
2275
extern AVCodec cavs_decoder;
2276

    
2277
/* pcm codecs */
2278
#define PCM_CODEC(id, name) \
2279
extern AVCodec name ## _decoder; \
2280
extern AVCodec name ## _encoder
2281

    
2282
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2283
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2284
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2285
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2286
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2287
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2288
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2289
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2290
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2291
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2292
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2293
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2294
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2295
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2296
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2297
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2298
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2299

    
2300
/* adpcm codecs */
2301

    
2302
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2303
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2304
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2305
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2306
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2307
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2308
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2309
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2310
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2311
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2312
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2313
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2314
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2315
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2316
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2317
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2318
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2319
PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2320

    
2321
#undef PCM_CODEC
2322

    
2323
/* dummy raw video codec */
2324
extern AVCodec rawvideo_encoder;
2325
extern AVCodec rawvideo_decoder;
2326

    
2327
/* the following codecs use external GPL libs */
2328
extern AVCodec ac3_decoder;
2329
extern AVCodec dts_decoder;
2330

    
2331
/* subtitles */
2332
extern AVCodec dvdsub_encoder;
2333
extern AVCodec dvdsub_decoder;
2334
extern AVCodec dvbsub_encoder;
2335
extern AVCodec dvbsub_decoder;
2336

    
2337
/* resample.c */
2338

    
2339
struct ReSampleContext;
2340
struct AVResampleContext;
2341

    
2342
typedef struct ReSampleContext ReSampleContext;
2343

    
2344
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2345
                                     int output_rate, int input_rate);
2346
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2347
void audio_resample_close(ReSampleContext *s);
2348

    
2349
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2350
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2351
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2352
void av_resample_close(struct AVResampleContext *c);
2353

    
2354
/* YUV420 format is assumed ! */
2355

    
2356
struct ImgReSampleContext;
2357

    
2358
typedef struct ImgReSampleContext ImgReSampleContext;
2359

    
2360
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2361
                                      int input_width, int input_height);
2362

    
2363
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2364
                                      int iwidth, int iheight,
2365
                                      int topBand, int bottomBand,
2366
                                      int leftBand, int rightBand,
2367
                                      int padtop, int padbottom,
2368
                                      int padleft, int padright);
2369

    
2370

    
2371
void img_resample(ImgReSampleContext *s,
2372
                  AVPicture *output, const AVPicture *input);
2373

    
2374
void img_resample_close(ImgReSampleContext *s);
2375

    
2376
/**
2377
 * Allocate memory for a picture.  Call avpicture_free to free it.
2378
 *
2379
 * @param picture the picture to be filled in.
2380
 * @param pix_fmt the format of the picture.
2381
 * @param width the width of the picture.
2382
 * @param height the height of the picture.
2383
 * @return 0 if successful, -1 if not.
2384
 */
2385
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2386

    
2387
/* Free a picture previously allocated by avpicture_alloc. */
2388
void avpicture_free(AVPicture *picture);
2389

    
2390
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2391
                   int pix_fmt, int width, int height);
2392
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2393
                     unsigned char *dest, int dest_size);
2394
int avpicture_get_size(int pix_fmt, int width, int height);
2395
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2396
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2397
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2398
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2399
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2400

    
2401
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2402
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2403
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2404
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2405
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2406
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2407

    
2408
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2409
                             int has_alpha);
2410
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2411
                              int has_alpha, int *loss_ptr);
2412

    
2413
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2414
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2415
int img_get_alpha_info(const AVPicture *src,
2416
                       int pix_fmt, int width, int height);
2417

    
2418
/* convert among pixel formats */
2419
int img_convert(AVPicture *dst, int dst_pix_fmt,
2420
                const AVPicture *src, int pix_fmt,
2421
                int width, int height);
2422

    
2423
/* deinterlace a picture */
2424
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2425
                          int pix_fmt, int width, int height);
2426

    
2427
/* external high level API */
2428

    
2429
extern AVCodec *first_avcodec;
2430

    
2431
/* returns LIBAVCODEC_VERSION_INT constant */
2432
unsigned avcodec_version(void);
2433
/* returns LIBAVCODEC_BUILD constant */
2434
unsigned avcodec_build(void);
2435
void avcodec_init(void);
2436

    
2437
void register_avcodec(AVCodec *format);
2438
AVCodec *avcodec_find_encoder(enum CodecID id);
2439
AVCodec *avcodec_find_encoder_by_name(const char *name);
2440
AVCodec *avcodec_find_decoder(enum CodecID id);
2441
AVCodec *avcodec_find_decoder_by_name(const char *name);
2442
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2443

    
2444
void avcodec_get_context_defaults(AVCodecContext *s);
2445
AVCodecContext *avcodec_alloc_context(void);
2446
void avcodec_get_frame_defaults(AVFrame *pic);
2447
AVFrame *avcodec_alloc_frame(void);
2448

    
2449
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2450
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2451
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2452
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2453
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2454
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2455

    
2456
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2457
void avcodec_thread_free(AVCodecContext *s);
2458
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2459
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2460
//FIXME func typedef
2461

    
2462
/**
2463
 * opens / inits the AVCodecContext.
2464
 * not thread save!
2465
 */
2466
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2467

    
2468
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2469
                         int *frame_size_ptr,
2470
                         uint8_t *buf, int buf_size);
2471
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2472
                         int *got_picture_ptr,
2473
                         uint8_t *buf, int buf_size);
2474
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2475
                            int *got_sub_ptr,
2476
                            const uint8_t *buf, int buf_size);
2477
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2478
                        int *data_size_ptr,
2479
                        uint8_t *buf, int buf_size);
2480
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2481
                         const short *samples);
2482
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2483
                         const AVFrame *pict);
2484
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2485
                            const AVSubtitle *sub);
2486

    
2487
int avcodec_close(AVCodecContext *avctx);
2488

    
2489
void avcodec_register_all(void);
2490

    
2491
void avcodec_flush_buffers(AVCodecContext *avctx);
2492

    
2493
void avcodec_default_free_buffers(AVCodecContext *s);
2494

    
2495
/* misc usefull functions */
2496

    
2497
/**
2498
 * returns a single letter to describe the picture type
2499
 */
2500
char av_get_pict_type_char(int pict_type);
2501

    
2502

    
2503
/* frame parsing */
2504
typedef struct AVCodecParserContext {
2505
    void *priv_data;
2506
    struct AVCodecParser *parser;
2507
    int64_t frame_offset; /* offset of the current frame */
2508
    int64_t cur_offset; /* current offset
2509
                           (incremented by each av_parser_parse()) */
2510
    int64_t last_frame_offset; /* offset of the last frame */
2511
    /* video info */
2512
    int pict_type; /* XXX: put it back in AVCodecContext */
2513
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2514
    int64_t pts;     /* pts of the current frame */
2515
    int64_t dts;     /* dts of the current frame */
2516

    
2517
    /* private data */
2518
    int64_t last_pts;
2519
    int64_t last_dts;
2520
    int fetch_timestamp;
2521

    
2522
#define AV_PARSER_PTS_NB 4
2523
    int cur_frame_start_index;
2524
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2525
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2526
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2527

    
2528
    int flags;
2529
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2530
} AVCodecParserContext;
2531

    
2532
typedef struct AVCodecParser {
2533
    int codec_ids[5]; /* several codec IDs are permitted */
2534
    int priv_data_size;
2535
    int (*parser_init)(AVCodecParserContext *s);
2536
    int (*parser_parse)(AVCodecParserContext *s,
2537
                        AVCodecContext *avctx,
2538
                        uint8_t **poutbuf, int *poutbuf_size,
2539
                        const uint8_t *buf, int buf_size);
2540
    void (*parser_close)(AVCodecParserContext *s);
2541
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2542
    struct AVCodecParser *next;
2543
} AVCodecParser;
2544

    
2545
extern AVCodecParser *av_first_parser;
2546

    
2547
void av_register_codec_parser(AVCodecParser *parser);
2548
AVCodecParserContext *av_parser_init(int codec_id);
2549
int av_parser_parse(AVCodecParserContext *s,
2550
                    AVCodecContext *avctx,
2551
                    uint8_t **poutbuf, int *poutbuf_size,
2552
                    const uint8_t *buf, int buf_size,
2553
                    int64_t pts, int64_t dts);
2554
int av_parser_change(AVCodecParserContext *s,
2555
                     AVCodecContext *avctx,
2556
                     uint8_t **poutbuf, int *poutbuf_size,
2557
                     const uint8_t *buf, int buf_size, int keyframe);
2558
void av_parser_close(AVCodecParserContext *s);
2559

    
2560
extern AVCodecParser mpegvideo_parser;
2561
extern AVCodecParser mpeg4video_parser;
2562
extern AVCodecParser cavsvideo_parser;
2563
extern AVCodecParser h261_parser;
2564
extern AVCodecParser h263_parser;
2565
extern AVCodecParser h264_parser;
2566
extern AVCodecParser mjpeg_parser;
2567
extern AVCodecParser pnm_parser;
2568
extern AVCodecParser mpegaudio_parser;
2569
extern AVCodecParser ac3_parser;
2570
extern AVCodecParser dvdsub_parser;
2571
extern AVCodecParser dvbsub_parser;
2572
extern AVCodecParser aac_parser;
2573

    
2574

    
2575
typedef struct AVBitStreamFilterContext {
2576
    void *priv_data;
2577
    struct AVBitStreamFilter *filter;
2578
    AVCodecParserContext *parser;
2579
    struct AVBitStreamFilterContext *next;
2580
} AVBitStreamFilterContext;
2581

    
2582

    
2583
typedef struct AVBitStreamFilter {
2584
    const char *name;
2585
    int priv_data_size;
2586
    int (*filter)(AVBitStreamFilterContext *bsfc,
2587
                  AVCodecContext *avctx, const char *args,
2588
                  uint8_t **poutbuf, int *poutbuf_size,
2589
                  const uint8_t *buf, int buf_size, int keyframe);
2590
    struct AVBitStreamFilter *next;
2591
} AVBitStreamFilter;
2592

    
2593
extern AVBitStreamFilter *av_first_bitstream_filter;
2594

    
2595
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2596
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2597
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2598
                               AVCodecContext *avctx, const char *args,
2599
                               uint8_t **poutbuf, int *poutbuf_size,
2600
                               const uint8_t *buf, int buf_size, int keyframe);
2601
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2602

    
2603
extern AVBitStreamFilter dump_extradata_bsf;
2604
extern AVBitStreamFilter remove_extradata_bsf;
2605
extern AVBitStreamFilter noise_bsf;
2606

    
2607

    
2608
/* memory */
2609
void *av_malloc(unsigned int size);
2610
void *av_mallocz(unsigned int size);
2611
void *av_realloc(void *ptr, unsigned int size);
2612
void av_free(void *ptr);
2613
char *av_strdup(const char *s);
2614
void av_freep(void *ptr);
2615
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2616
/* for static data only */
2617
/* call av_free_static to release all staticaly allocated tables */
2618
void av_free_static(void);
2619
void *av_mallocz_static(unsigned int size);
2620
void *av_realloc_static(void *ptr, unsigned int size);
2621

    
2622
void img_copy(AVPicture *dst, const AVPicture *src,
2623
              int pix_fmt, int width, int height);
2624

    
2625
int img_crop(AVPicture *dst, const AVPicture *src,
2626
             int pix_fmt, int top_band, int left_band);
2627

    
2628
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2629
            int padtop, int padbottom, int padleft, int padright, int *color);
2630

    
2631
/* av_log API */
2632

    
2633
#include <stdarg.h>
2634

    
2635
#define AV_LOG_QUIET -1
2636
#define AV_LOG_ERROR 0
2637
#define AV_LOG_INFO 1
2638
#define AV_LOG_DEBUG 2
2639

    
2640
#ifdef __GNUC__
2641
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2642
#else
2643
extern void av_log(void*, int level, const char *fmt, ...);
2644
#endif
2645

    
2646
extern void av_vlog(void*, int level, const char *fmt, va_list);
2647
extern int av_log_get_level(void);
2648
extern void av_log_set_level(int);
2649
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2650

    
2651
/* endian macros */
2652
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2653
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2654
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2655
                   (((uint8_t*)(x))[1] << 16) | \
2656
                   (((uint8_t*)(x))[2] << 8) | \
2657
                    ((uint8_t*)(x))[3])
2658
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2659
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2660
                   (((uint8_t*)(x))[2] << 16) | \
2661
                   (((uint8_t*)(x))[1] << 8) | \
2662
                    ((uint8_t*)(x))[0])
2663
#endif
2664

    
2665
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2666

    
2667
#ifdef __cplusplus
2668
}
2669
#endif
2670

    
2671
#endif /* AVCODEC_H */