Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 11e29a41

History | View | Annotate | Download (54.1 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 "common.h"
15
#include "rational.h"
16

    
17
#define FFMPEG_VERSION_INT     0x000408
18
#define FFMPEG_VERSION         "0.4.8"
19
#define LIBAVCODEC_BUILD       4691
20

    
21
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
22
#define LIBAVCODEC_VERSION     FFMPEG_VERSION
23

    
24
#define AV_STRINGIFY(s)        AV_TOSTRING(s)
25
#define AV_TOSTRING(s) #s
26
#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
27

    
28
enum CodecID {
29
    CODEC_ID_NONE, 
30
    CODEC_ID_MPEG1VIDEO,
31
    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
32
    CODEC_ID_MPEG2VIDEO_XVMC,
33
    CODEC_ID_H263,
34
    CODEC_ID_RV10,
35
    CODEC_ID_MP2,
36
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
37
    CODEC_ID_VORBIS,
38
    CODEC_ID_AC3,
39
    CODEC_ID_MJPEG,
40
    CODEC_ID_MJPEGB,
41
    CODEC_ID_LJPEG,
42
    CODEC_ID_SP5X,
43
    CODEC_ID_MPEG4,
44
    CODEC_ID_RAWVIDEO,
45
    CODEC_ID_MSMPEG4V1,
46
    CODEC_ID_MSMPEG4V2,
47
    CODEC_ID_MSMPEG4V3,
48
    CODEC_ID_WMV1,
49
    CODEC_ID_WMV2,
50
    CODEC_ID_H263P,
51
    CODEC_ID_H263I,
52
    CODEC_ID_FLV1,
53
    CODEC_ID_SVQ1,
54
    CODEC_ID_SVQ3,
55
    CODEC_ID_DVVIDEO,
56
    CODEC_ID_DVAUDIO,
57
    CODEC_ID_WMAV1,
58
    CODEC_ID_WMAV2,
59
    CODEC_ID_MACE3,
60
    CODEC_ID_MACE6,
61
    CODEC_ID_HUFFYUV,
62
    CODEC_ID_CYUV,
63
    CODEC_ID_H264,
64
    CODEC_ID_INDEO3,
65
    CODEC_ID_VP3,
66
    CODEC_ID_THEORA,
67
    CODEC_ID_AAC,
68
    CODEC_ID_MPEG4AAC,
69
    CODEC_ID_ASV1,
70
    CODEC_ID_ASV2,
71
    CODEC_ID_FFV1,
72
    CODEC_ID_4XM,
73
    CODEC_ID_VCR1,
74
    CODEC_ID_CLJR,
75
    CODEC_ID_MDEC,
76
    CODEC_ID_ROQ,
77
    CODEC_ID_INTERPLAY_VIDEO,
78
    CODEC_ID_XAN_WC3,
79
    CODEC_ID_XAN_WC4,
80
    CODEC_ID_RPZA,
81
    CODEC_ID_CINEPAK,
82
    CODEC_ID_WS_VQA,
83
    CODEC_ID_MSRLE,
84
    CODEC_ID_MSVIDEO1,
85
    CODEC_ID_IDCIN,
86
    CODEC_ID_8BPS,
87
    CODEC_ID_SMC,
88

    
89
    /* various pcm "codecs" */
90
    CODEC_ID_PCM_S16LE,
91
    CODEC_ID_PCM_S16BE,
92
    CODEC_ID_PCM_U16LE,
93
    CODEC_ID_PCM_U16BE,
94
    CODEC_ID_PCM_S8,
95
    CODEC_ID_PCM_U8,
96
    CODEC_ID_PCM_MULAW,
97
    CODEC_ID_PCM_ALAW,
98

    
99
    /* various adpcm codecs */
100
    CODEC_ID_ADPCM_IMA_QT,
101
    CODEC_ID_ADPCM_IMA_WAV,
102
    CODEC_ID_ADPCM_IMA_DK3,
103
    CODEC_ID_ADPCM_IMA_DK4,
104
    CODEC_ID_ADPCM_IMA_WS,
105
    CODEC_ID_ADPCM_MS,
106
    CODEC_ID_ADPCM_4XM,
107
    CODEC_ID_ADPCM_XA,
108
    CODEC_ID_ADPCM_ADX,
109

    
110
        /* AMR */
111
    CODEC_ID_AMR_NB,
112
    CODEC_ID_AMR_WB,
113

    
114
    /* RealAudio codecs*/
115
    CODEC_ID_RA_144,
116
    CODEC_ID_RA_288,
117

    
118
    /* various DPCM codecs */
119
    CODEC_ID_ROQ_DPCM,
120
    CODEC_ID_INTERPLAY_DPCM,
121
    CODEC_ID_XAN_DPCM,
122
    
123
    CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
124
                         stream (only used by libavformat) */
125
};
126

    
127
/* CODEC_ID_MP3LAME is absolete */
128
#define CODEC_ID_MP3LAME CODEC_ID_MP3
129

    
130
enum CodecType {
131
    CODEC_TYPE_UNKNOWN = -1,
132
    CODEC_TYPE_VIDEO,
133
    CODEC_TYPE_AUDIO,
134
    CODEC_TYPE_DATA,
135
};
136

    
137
/**
138
 * Pixel format. Notes: 
139
 *
140
 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
141
 * color is put together as:
142
 *  (A << 24) | (R << 16) | (G << 8) | B
143
 * This is stored as BGRA on little endian CPU architectures and ARGB on
144
 * big endian CPUs.
145
 *
146
 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
147
 * image data is stored in AVFrame.data[0]. The palette is transported in
148
 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
149
 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
150
 * also endian-specific). Note also that the individual RGB palette
151
 * components stored in AVFrame.data[1] should be in the range 0..255.
152
 * This is important as many custom PAL8 video codecs that were designed
153
 * to run on the IBM VGA graphics adapter use 6-bit palette components.
154
 */
155
enum PixelFormat {
156
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
157
    PIX_FMT_YUV422,    
158
    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
159
    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
160
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
161
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
162
    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
163
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
164
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
165
    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
166
    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
167
    PIX_FMT_GRAY8,
168
    PIX_FMT_MONOWHITE, ///< 0 is white 
169
    PIX_FMT_MONOBLACK, ///< 0 is black 
170
    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
171
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
172
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
173
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
174
    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
175
    PIX_FMT_XVMC_MPEG2_IDCT,
176
    PIX_FMT_NB,
177
};
178

    
179
/* currently unused, may be used if 24/32 bits samples ever supported */
180
enum SampleFormat {
181
    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
182
};
183

    
184
/* in bytes */
185
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
186

    
187
/**
188
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
189
 * this is mainly needed because some optimized bitstream readers read 
190
 * 32 or 64 bit at once and could read over the end<br>
191
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
192
 * MPEG bitstreams could cause overread and segfault
193
 */
194
#define FF_INPUT_BUFFER_PADDING_SIZE 8
195

    
196
/* motion estimation type, EPZS by default */
197
enum Motion_Est_ID {
198
    ME_ZERO = 1,
199
    ME_FULL,
200
    ME_LOG,
201
    ME_PHODS,
202
    ME_EPZS,
203
    ME_X1
204
};
205

    
206
typedef struct RcOverride{
207
    int start_frame;
208
    int end_frame;
209
    int qscale; // if this is 0 then quality_factor will be used instead
210
    float quality_factor;
211
} RcOverride;
212

    
213
/* only for ME compatiblity with old apps */
214
extern int motion_estimation_method;
215

    
216
/* ME algos sorted by quality */
217
//FIXME remove IMHO
218
static const __attribute__((unused)) int Motion_Est_QTab[] =
219
 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
220

    
221

    
222
#define FF_MAX_B_FRAMES 8
223

    
224
/* encoding support
225
   these flags can be passed in AVCodecContext.flags before initing 
226
   Note: note not everything is supported yet 
227
*/
228

    
229
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
230
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed 
231
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
232
#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
233
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
234
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
235
/* parent program gurantees that the input for b-frame containing streams is not written to 
236
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
237
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
238
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
239
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
240
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
241
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
242
#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
243
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
244
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
245
                                            of only at frame boundaries */
246
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
247
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
248
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
249
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
250
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
251
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
252
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
253
/* Fx : Flag for h263+ extra options */
254
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
255
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
256
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
257
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
258
/* For advanced prediction mode, we reuse the 4MV flag */
259
/* Unsupported options :
260
 *                 Syntax Arithmetic coding (SAC)
261
 *                 Deblocking filter internal loop
262
 *                 Slice structured
263
 *                 Reference Picture Selection
264
 *                 Independant Segment Decoding
265
 *                 Alternative Inter *                 VLC
266
 *                 Modified Quantization */
267
/* /Fx */
268
/* codec capabilities */
269

    
270
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
271
/**
272
 * Codec uses get_buffer() for allocating buffers.
273
 * direct rendering method 1
274
 */
275
#define CODEC_CAP_DR1             0x0002
276
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
277
   used */
278
#define CODEC_CAP_PARSE_ONLY      0x0004
279
#define CODEC_CAP_TRUNCATED       0x0008
280
/*
281
 * Codec can use conditional replenishment if available.
282
 */
283
#define CODEC_CAP_CR              0x0010
284

    
285
/**
286
 * Pan Scan area.
287
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
288
 */
289
typedef struct AVPanScan{
290
    /**
291
     * id.
292
     * - encoding: set by user.
293
     * - decoding: set by lavc
294
     */
295
    int id;
296

    
297
    /**
298
     * width and height in 1/16 pel
299
     * - encoding: set by user.
300
     * - decoding: set by lavc
301
     */
302
    int width;
303
    int height;
304

    
305
    /**
306
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
307
     * - encoding: set by user.
308
     * - decoding: set by lavc
309
     */
310
    int16_t position[3][2];
311
}AVPanScan;
312

    
313
#define FF_COMMON_FRAME \
314
    /**\
315
     * pointer to the picture planes.\
316
     * this might be different from the first allocated byte\
317
     * - encoding: \
318
     * - decoding: \
319
     */\
320
    uint8_t *data[4];\
321
    int linesize[4];\
322
    /**\
323
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
324
     * this isnt used by lavc unless the default get/release_buffer() is used\
325
     * - encoding: \
326
     * - decoding: \
327
     */\
328
    uint8_t *base[4];\
329
    /**\
330
     * 1 -> keyframe, 0-> not\
331
     * - encoding: set by lavc\
332
     * - decoding: set by lavc\
333
     */\
334
    int key_frame;\
335
\
336
    /**\
337
     * picture type of the frame, see ?_TYPE below.\
338
     * - encoding: set by lavc for coded_picture (and set by user for input)\
339
     * - decoding: set by lavc\
340
     */\
341
    int pict_type;\
342
\
343
    /**\
344
     * presentation timestamp in micro seconds (time when frame should be shown to user)\
345
     * if 0 then the frame_rate will be used as reference\
346
     * - encoding: MUST be set by user\
347
     * - decoding: set by lavc\
348
     */\
349
    int64_t pts;\
350
\
351
    /**\
352
     * picture number in bitstream order.\
353
     * - encoding: set by\
354
     * - decoding: set by lavc\
355
     */\
356
    int coded_picture_number;\
357
    /**\
358
     * picture number in display order.\
359
     * - encoding: set by\
360
     * - decoding: set by lavc\
361
     */\
362
    int display_picture_number;\
363
\
364
    /**\
365
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
366
     * - encoding: set by lavc for coded_picture (and set by user for input)\
367
     * - decoding: set by lavc\
368
     */\
369
    int quality; \
370
\
371
    /**\
372
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
373
     * set to INT_MAX if the buffer has not been used yet \
374
     * - encoding: unused\
375
     * - decoding: MUST be set by get_buffer()\
376
     */\
377
    int age;\
378
\
379
    /**\
380
     * is this picture used as reference\
381
     * - encoding: unused\
382
     * - decoding: set by lavc (before get_buffer() call))\
383
     */\
384
    int reference;\
385
\
386
    /**\
387
     * QP table\
388
     * - encoding: unused\
389
     * - decoding: set by lavc\
390
     */\
391
    int8_t *qscale_table;\
392
    /**\
393
     * QP store stride\
394
     * - encoding: unused\
395
     * - decoding: set by lavc\
396
     */\
397
    int qstride;\
398
\
399
    /**\
400
     * mbskip_table[mb]>=1 if MB didnt change\
401
     * stride= mb_width = (width+15)>>4\
402
     * - encoding: unused\
403
     * - decoding: set by lavc\
404
     */\
405
    uint8_t *mbskip_table;\
406
\
407
    /**\
408
     * for some private data of the user\
409
     * - encoding: unused\
410
     * - decoding: set by user\
411
     */\
412
    void *opaque;\
413
\
414
    /**\
415
     * error\
416
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
417
     * - decoding: unused\
418
     */\
419
    uint64_t error[4];\
420
\
421
    /**\
422
     * type of the buffer (to keep track of who has to dealloc data[*])\
423
     * - encoding: set by the one who allocs it\
424
     * - decoding: set by the one who allocs it\
425
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
426
     */\
427
    int type;\
428
    \
429
    /**\
430
     * when decoding, this signal how much the picture must be delayed.\
431
     * extra_delay = repeat_pict / (2*fps)\
432
     * - encoding: unused\
433
     * - decoding: set by lavc\
434
     */\
435
    int repeat_pict;\
436
    \
437
    /**\
438
     * \
439
     */\
440
    int qscale_type;\
441
    \
442
    /**\
443
     * The content of the picture is interlaced.\
444
     * - encoding: set by user\
445
     * - decoding: set by lavc (default 0)\
446
     */\
447
    int interlaced_frame;\
448
    \
449
    /**\
450
     * if the content is interlaced, is top field displayed first.\
451
     * - encoding: set by user\
452
     * - decoding: set by lavc\
453
     */\
454
    int top_field_first;\
455
    \
456
    /**\
457
     * Pan scan.\
458
     * - encoding: set by user\
459
     * - decoding: set by lavc\
460
     */\
461
    AVPanScan *pan_scan;\
462
    \
463
    /**\
464
     * tell user application that palette has changed from previous frame.\
465
     * - encoding: ??? (no palette-enabled encoder yet)\
466
     * - decoding: set by lavc (default 0)\
467
     */\
468
    int palette_has_changed;\
469
    \
470
    /**\
471
     * Codec suggestion on buffer type if != 0\
472
     * - encoding: unused\
473
     * - decoding: set by lavc (before get_buffer() call))\
474
     */\
475
    int buffer_hints;\
476

    
477
#define FF_QSCALE_TYPE_MPEG1        0
478
#define FF_QSCALE_TYPE_MPEG2        1
479

    
480
#define FF_BUFFER_TYPE_INTERNAL 1
481
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
482
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
483
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
484

    
485

    
486
#define FF_I_TYPE 1 // Intra
487
#define FF_P_TYPE 2 // Predicted
488
#define FF_B_TYPE 3 // Bi-dir predicted
489
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
490
#define FF_SI_TYPE 5
491
#define FF_SP_TYPE 6
492

    
493
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
494
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
495
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
496
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
497

    
498
/**
499
 * Audio Video Frame.
500
 */
501
typedef struct AVFrame {
502
    FF_COMMON_FRAME
503
} AVFrame;
504

    
505
#define DEFAULT_FRAME_RATE_BASE 1001000
506

    
507
/**
508
 * main external api structure.
509
 */
510
typedef struct AVCodecContext {
511
    /**
512
     * the average bitrate.
513
     * - encoding: set by user. unused for constant quantizer encoding
514
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
515
     */
516
    int bit_rate;
517

    
518
    /**
519
     * number of bits the bitstream is allowed to diverge from the reference.
520
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
521
     * - encoding: set by user. unused for constant quantizer encoding
522
     * - decoding: unused
523
     */
524
    int bit_rate_tolerance; 
525

    
526
    /**
527
     * CODEC_FLAG_*.
528
     * - encoding: set by user.
529
     * - decoding: set by user.
530
     */
531
    int flags;
532

    
533
    /**
534
     * some codecs needs additionnal format info. It is stored here
535
     * - encoding: set by user. 
536
     * - decoding: set by lavc. (FIXME is this ok?)
537
     */
538
    int sub_id;
539

    
540
    /**
541
     * motion estimation algorithm used for video coding.
542
     * - encoding: MUST be set by user.
543
     * - decoding: unused
544
     */
545
    int me_method;
546

    
547
    /**
548
     * some codecs need / can use extra-data like huffman tables.
549
     * mjpeg: huffman tables
550
     * rv10: additional flags
551
     * mpeg4: global headers (they can be in the bitstream or here)
552
     * - encoding: set/allocated/freed by lavc.
553
     * - decoding: set/allocated/freed by user.
554
     */
555
    void *extradata;
556
    int extradata_size;
557
    
558
    /* video only */
559
    /**
560
     * frames per sec multiplied by frame_rate_base.
561
     * for variable fps this is the precission, so if the timestamps 
562
     * can be specified in msec precssion then this is 1000*frame_rate_base
563
     * - encoding: MUST be set by user
564
     * - decoding: set by lavc. 0 or the frame_rate if available
565
     */
566
    int frame_rate;
567
    
568
    /**
569
     * width / height.
570
     * - encoding: MUST be set by user. 
571
     * - decoding: set by user if known, codec should override / dynamically change if needed
572
     */
573
    int width, height;
574
    
575
#define FF_ASPECT_SQUARE 1
576
#define FF_ASPECT_4_3_625 2
577
#define FF_ASPECT_4_3_525 3
578
#define FF_ASPECT_16_9_625 4
579
#define FF_ASPECT_16_9_525 5
580
#define FF_ASPECT_EXTENDED 15
581

    
582
    /**
583
     * the number of pictures in a group of pitures, or 0 for intra_only.
584
     * - encoding: set by user.
585
     * - decoding: unused
586
     */
587
    int gop_size;
588

    
589
    /**
590
     * pixel format, see PIX_FMT_xxx.
591
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
592
     *                    conversion is in order. This only works for
593
     *                    codecs with one supported pix_fmt, we should
594
     *                    do something for a generic case as well.
595
     * - decoding: set by lavc.
596
     */
597
    enum PixelFormat pix_fmt;
598
 
599
    /**
600
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
601
     * has to read frames at native frame rate.
602
     * - encoding: set by user.
603
     * - decoding: unused.
604
     */
605
    int rate_emu;
606
       
607
    /**
608
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
609
     * decoder to draw an horizontal band. It improve cache usage. Not
610
     * all codecs can do that. You must check the codec capabilities
611
     * before
612
     * - encoding: unused
613
     * - decoding: set by user.
614
     * @param height the height of the slice
615
     * @param y the y position of the slice
616
     * @param type 1->top field, 2->bottom field, 3->frame
617
     * @param offset offset into the AVFrame.data from which the slice should be read
618
     */
619
    void (*draw_horiz_band)(struct AVCodecContext *s,
620
                            const AVFrame *src, int offset[4],
621
                            int y, int type, int height);
622

    
623
    /* audio only */
624
    int sample_rate; ///< samples per sec 
625
    int channels;
626
    int sample_fmt;  ///< sample format, currenly unused 
627

    
628
    /* the following data should not be initialized */
629
    int frame_size;     ///< in samples, initialized when calling 'init' 
630
    int frame_number;   ///< audio or video frame number 
631
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
632
    
633
    /**
634
     * number of frames the decoded output will be delayed relative to 
635
     * the encoded input.
636
     * - encoding: set by lavc.
637
     * - decoding: unused
638
     */
639
    int delay;
640
    
641
    /* - encoding parameters */
642
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
643
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
644
    
645
    /**
646
     * minimum quantizer.
647
     * - encoding: set by user.
648
     * - decoding: unused
649
     */
650
    int qmin;
651

    
652
    /**
653
     * maximum quantizer.
654
     * - encoding: set by user.
655
     * - decoding: unused
656
     */
657
    int qmax;
658

    
659
    /**
660
     * maximum quantizer difference etween frames.
661
     * - encoding: set by user.
662
     * - decoding: unused
663
     */
664
    int max_qdiff;
665

    
666
    /**
667
     * maximum number of b frames between non b frames.
668
     * note: the output will be delayed by max_b_frames+1 relative to the input
669
     * - encoding: set by user.
670
     * - decoding: unused
671
     */
672
    int max_b_frames;
673

    
674
    /**
675
     * qscale factor between ip and b frames.
676
     * - encoding: set by user.
677
     * - decoding: unused
678
     */
679
    float b_quant_factor;
680
    
681
    /** obsolete FIXME remove */
682
    int rc_strategy;
683
    int b_frame_strategy;
684

    
685
    /**
686
     * hurry up amount.
687
     * - encoding: unused
688
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
689
     */
690
    int hurry_up;
691
    
692
    struct AVCodec *codec;
693
    
694
    void *priv_data;
695

    
696
    /* The following data is for RTP friendly coding */
697
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
698
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
699
                    /* highers numbers represent more error-prone */
700
                    /* enviroments, by now just "1" exist         */
701
    
702
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
703
                            /* do it's best to deliver a chunk with size    */
704
                            /* below rtp_payload_size, the chunk will start */
705
                            /* with a start code on some codecs like H.263  */
706
                            /* This doesn't take account of any particular  */
707
                            /* headers inside the transmited RTP payload    */
708

    
709
    
710
    /* The RTP callcack: This function is called  */
711
    /* every time the encoder as a packet to send */
712
    /* Depends on the encoder if the data starts  */
713
    /* with a Start Code (it should) H.263 does   */
714
    void (*rtp_callback)(void *data, int size, int packet_number); 
715

    
716
    /* statistics, used for 2-pass encoding */
717
    int mv_bits;
718
    int header_bits;
719
    int i_tex_bits;
720
    int p_tex_bits;
721
    int i_count;
722
    int p_count;
723
    int skip_count;
724
    int misc_bits;
725
    
726
    /**
727
     * number of bits used for the previously encoded frame.
728
     * - encoding: set by lavc
729
     * - decoding: unused
730
     */
731
    int frame_bits;
732

    
733
    /**
734
     * private data of the user, can be used to carry app specific stuff.
735
     * - encoding: set by user
736
     * - decoding: set by user
737
     */
738
    void *opaque;
739

    
740
    char codec_name[32];
741
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
742
    enum CodecID codec_id; /* see CODEC_ID_xxx */
743
    
744
    /**
745
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
746
     * this is used to workaround some encoder bugs
747
     * - encoding: set by user, if not then the default based on codec_id will be used
748
     * - decoding: set by user, will be converted to upper case by lavc during init
749
     */
750
    unsigned int codec_tag;
751
    
752
    /**
753
     * workaround bugs in encoders which sometimes cannot be detected automatically.
754
     * - encoding: unused
755
     * - decoding: set by user
756
     */
757
    int workaround_bugs;
758
#define FF_BUG_AUTODETECT       1  ///< autodetection
759
#define FF_BUG_OLD_MSMPEG4      2
760
#define FF_BUG_XVID_ILACE       4
761
#define FF_BUG_UMP4             8
762
#define FF_BUG_NO_PADDING       16
763
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
764
#define FF_BUG_QPEL_CHROMA      64
765
#define FF_BUG_STD_QPEL         128
766
#define FF_BUG_QPEL_CHROMA2     256
767
#define FF_BUG_DIRECT_BLOCKSIZE 512
768
#define FF_BUG_EDGE             1024
769
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
770
        
771
    /**
772
     * luma single coeff elimination threshold.
773
     * - encoding: set by user
774
     * - decoding: unused
775
     */
776
    int luma_elim_threshold;
777
    
778
    /**
779
     * chroma single coeff elimination threshold.
780
     * - encoding: set by user
781
     * - decoding: unused
782
     */
783
    int chroma_elim_threshold;
784
    
785
    /**
786
     * strictly follow the std (MPEG4, ...).
787
     * - encoding: set by user
788
     * - decoding: unused
789
     */
790
    int strict_std_compliance;
791
    
792
    /**
793
     * qscale offset between ip and b frames.
794
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
795
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
796
     * - encoding: set by user.
797
     * - decoding: unused
798
     */
799
    float b_quant_offset;
800
    
801
    /**
802
     * error resilience higher values will detect more errors but may missdetect
803
     * some more or less valid parts as errors.
804
     * - encoding: unused
805
     * - decoding: set by user
806
     */
807
    int error_resilience;
808
#define FF_ER_CAREFULL        1
809
#define FF_ER_COMPLIANT       2
810
#define FF_ER_AGGRESSIVE      3
811
#define FF_ER_VERY_AGGRESSIVE 4
812
    
813
    /**
814
     * called at the beginning of each frame to get a buffer for it.
815
     * if pic.reference is set then the frame will be read later by lavc
816
     * width and height should be rounded up to the next multiple of 16
817
     * - encoding: unused
818
     * - decoding: set by lavc, user can override
819
     */
820
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
821
    
822
    /**
823
     * called to release buffers which where allocated with get_buffer.
824
     * a released buffer can be reused in get_buffer()
825
     * pic.data[*] must be set to NULL
826
     * - encoding: unused
827
     * - decoding: set by lavc, user can override
828
     */
829
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
830

    
831
    /**
832
     * is 1 if the decoded stream contains b frames, 0 otherwise.
833
     * - encoding: unused
834
     * - decoding: set by lavc
835
     */
836
    int has_b_frames;
837
    
838
    int block_align; ///< used by some WAV based audio codecs
839
    
840
    int parse_only; /* - decoding only: if true, only parsing is done
841
                       (function avcodec_parse_frame()). The frame
842
                       data is returned. Only MPEG codecs support this now. */
843
    
844
    /**
845
     * 0-> h263 quant 1-> mpeg quant.
846
     * - encoding: set by user.
847
     * - decoding: unused
848
     */
849
    int mpeg_quant;
850
    
851
    /**
852
     * pass1 encoding statistics output buffer.
853
     * - encoding: set by lavc
854
     * - decoding: unused
855
     */
856
    char *stats_out;
857
    
858
    /**
859
     * pass2 encoding statistics input buffer.
860
     * concatenated stuff from stats_out of pass1 should be placed here
861
     * - encoding: allocated/set/freed by user
862
     * - decoding: unused
863
     */
864
    char *stats_in;
865
    
866
    /**
867
     * ratecontrol qmin qmax limiting method.
868
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
869
     * - encoding: set by user.
870
     * - decoding: unused
871
     */
872
    float rc_qsquish;
873

    
874
    float rc_qmod_amp;
875
    int rc_qmod_freq;
876
    
877
    /**
878
     * ratecontrol override, see RcOverride.
879
     * - encoding: allocated/set/freed by user.
880
     * - decoding: unused
881
     */
882
    RcOverride *rc_override;
883
    int rc_override_count;
884
    
885
    /**
886
     * rate control equation.
887
     * - encoding: set by user
888
     * - decoding: unused
889
     */
890
    char *rc_eq;
891
    
892
    /**
893
     * maximum bitrate.
894
     * - encoding: set by user.
895
     * - decoding: unused
896
     */
897
    int rc_max_rate;
898
    
899
    /**
900
     * minimum bitrate.
901
     * - encoding: set by user.
902
     * - decoding: unused
903
     */
904
    int rc_min_rate;
905
    
906
    /**
907
     * decoder bitstream buffer size.
908
     * - encoding: set by user.
909
     * - decoding: unused
910
     */
911
    int rc_buffer_size;
912
    float rc_buffer_aggressivity;
913

    
914
    /**
915
     * qscale factor between p and i frames.
916
     * - encoding: set by user.
917
     * - decoding: unused
918
     */
919
    float i_quant_factor;
920
    
921
    /**
922
     * qscale offset between p and i frames.
923
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
924
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
925
     * - encoding: set by user.
926
     * - decoding: unused
927
     */
928
    float i_quant_offset;
929
    
930
    /**
931
     * initial complexity for pass1 ratecontrol.
932
     * - encoding: set by user.
933
     * - decoding: unused
934
     */
935
    float rc_initial_cplx;
936

    
937
    /**
938
     * dct algorithm, see FF_DCT_* below.
939
     * - encoding: set by user
940
     * - decoding: unused
941
     */
942
    int dct_algo;
943
#define FF_DCT_AUTO    0
944
#define FF_DCT_FASTINT 1
945
#define FF_DCT_INT     2
946
#define FF_DCT_MMX     3
947
#define FF_DCT_MLIB    4
948
#define FF_DCT_ALTIVEC 5
949
#define FF_DCT_FAAN    6
950
    
951
    /**
952
     * luminance masking (0-> disabled).
953
     * - encoding: set by user
954
     * - decoding: unused
955
     */
956
    float lumi_masking;
957
    
958
    /**
959
     * temporary complexity masking (0-> disabled).
960
     * - encoding: set by user
961
     * - decoding: unused
962
     */
963
    float temporal_cplx_masking;
964
    
965
    /**
966
     * spatial complexity masking (0-> disabled).
967
     * - encoding: set by user
968
     * - decoding: unused
969
     */
970
    float spatial_cplx_masking;
971
    
972
    /**
973
     * p block masking (0-> disabled).
974
     * - encoding: set by user
975
     * - decoding: unused
976
     */
977
    float p_masking;
978

    
979
    /**
980
     * darkness masking (0-> disabled).
981
     * - encoding: set by user
982
     * - decoding: unused
983
     */
984
    float dark_masking;
985
    
986
    
987
    /* for binary compatibility */
988
    int unused;
989
    
990
    /**
991
     * idct algorithm, see FF_IDCT_* below.
992
     * - encoding: set by user
993
     * - decoding: set by user
994
     */
995
    int idct_algo;
996
#define FF_IDCT_AUTO         0
997
#define FF_IDCT_INT          1
998
#define FF_IDCT_SIMPLE       2
999
#define FF_IDCT_SIMPLEMMX    3
1000
#define FF_IDCT_LIBMPEG2MMX  4
1001
#define FF_IDCT_PS2          5
1002
#define FF_IDCT_MLIB         6
1003
#define FF_IDCT_ARM          7
1004
#define FF_IDCT_ALTIVEC      8
1005
#define FF_IDCT_SH4          9
1006
#define FF_IDCT_SIMPLEARM    10
1007

    
1008
    /**
1009
     * slice count.
1010
     * - encoding: set by lavc
1011
     * - decoding: set by user (or 0)
1012
     */
1013
    int slice_count;
1014
    /**
1015
     * slice offsets in the frame in bytes.
1016
     * - encoding: set/allocated by lavc
1017
     * - decoding: set/allocated by user (or NULL)
1018
     */
1019
    int *slice_offset;
1020

    
1021
    /**
1022
     * error concealment flags.
1023
     * - encoding: unused
1024
     * - decoding: set by user
1025
     */
1026
    int error_concealment;
1027
#define FF_EC_GUESS_MVS   1
1028
#define FF_EC_DEBLOCK     2
1029

    
1030
    /**
1031
     * dsp_mask could be add used to disable unwanted CPU features
1032
     * CPU features (i.e. MMX, SSE. ...)
1033
     *
1034
     * with FORCE flag you may instead enable given CPU features
1035
     * (Dangerous: usable in case of misdetection, improper usage however will
1036
     * result into program crash)
1037
     */
1038
    unsigned dsp_mask;
1039
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1040
    /* lower 16 bits - CPU features */
1041
#ifdef HAVE_MMX
1042
#define FF_MM_MMX        0x0001 /* standard MMX */
1043
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1044
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1045
#define FF_MM_SSE        0x0008 /* SSE functions */
1046
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1047
#endif /* HAVE_MMX */
1048

    
1049
    /**
1050
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1051
     * - encoding: set by lavc
1052
     * - decoding: set by user
1053
     */
1054
     int bits_per_sample;
1055
    
1056
    /**
1057
     * prediction method (needed for huffyuv).
1058
     * - encoding: set by user
1059
     * - decoding: unused
1060
     */
1061
     int prediction_method;
1062
#define FF_PRED_LEFT   0
1063
#define FF_PRED_PLANE  1
1064
#define FF_PRED_MEDIAN 2
1065
    
1066
    /**
1067
     * sample aspect ratio (0 if unknown).
1068
     * - encoding: set by user.
1069
     * - decoding: set by lavc.
1070
     */
1071
    AVRational sample_aspect_ratio;
1072

    
1073
    /**
1074
     * the picture in the bitstream.
1075
     * - encoding: set by lavc
1076
     * - decoding: set by lavc
1077
     */
1078
    AVFrame *coded_frame;
1079

    
1080
    /**
1081
     * debug.
1082
     * - encoding: set by user.
1083
     * - decoding: set by user.
1084
     */
1085
    int debug;
1086
#define FF_DEBUG_PICT_INFO 1
1087
#define FF_DEBUG_RC        2
1088
#define FF_DEBUG_BITSTREAM 4
1089
#define FF_DEBUG_MB_TYPE   8
1090
#define FF_DEBUG_QP        16
1091
#define FF_DEBUG_MV        32
1092
#define FF_DEBUG_VIS_MV    0x00000040
1093
#define FF_DEBUG_SKIP      0x00000080
1094
#define FF_DEBUG_STARTCODE 0x00000100
1095
#define FF_DEBUG_PTS       0x00000200
1096
#define FF_DEBUG_ER        0x00000400
1097
#define FF_DEBUG_MMCO      0x00000800
1098
#define FF_DEBUG_BUGS      0x00001000
1099
    
1100
    /**
1101
     * error.
1102
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1103
     * - decoding: unused
1104
     */
1105
    uint64_t error[4];
1106
    
1107
    /**
1108
     * minimum MB quantizer.
1109
     * - encoding: set by user.
1110
     * - decoding: unused
1111
     */
1112
    int mb_qmin;
1113

    
1114
    /**
1115
     * maximum MB quantizer.
1116
     * - encoding: set by user.
1117
     * - decoding: unused
1118
     */
1119
    int mb_qmax;
1120
    
1121
    /**
1122
     * motion estimation compare function.
1123
     * - encoding: set by user.
1124
     * - decoding: unused
1125
     */
1126
    int me_cmp;
1127
    /**
1128
     * subpixel motion estimation compare function.
1129
     * - encoding: set by user.
1130
     * - decoding: unused
1131
     */
1132
    int me_sub_cmp;
1133
    /**
1134
     * macroblock compare function (not supported yet).
1135
     * - encoding: set by user.
1136
     * - decoding: unused
1137
     */
1138
    int mb_cmp;
1139
#define FF_CMP_SAD  0
1140
#define FF_CMP_SSE  1
1141
#define FF_CMP_SATD 2
1142
#define FF_CMP_DCT  3
1143
#define FF_CMP_PSNR 4
1144
#define FF_CMP_BIT  5
1145
#define FF_CMP_RD   6
1146
#define FF_CMP_ZERO 7
1147
#define FF_CMP_CHROMA 256
1148
    
1149
    /**
1150
     * ME diamond size & shape.
1151
     * - encoding: set by user.
1152
     * - decoding: unused
1153
     */
1154
    int dia_size;
1155

    
1156
    /**
1157
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1158
     * - encoding: set by user.
1159
     * - decoding: unused
1160
     */
1161
    int last_predictor_count;
1162

    
1163
    /**
1164
     * pre pass for motion estimation.
1165
     * - encoding: set by user.
1166
     * - decoding: unused
1167
     */
1168
    int pre_me;
1169

    
1170
    /**
1171
     * motion estimation pre pass compare function.
1172
     * - encoding: set by user.
1173
     * - decoding: unused
1174
     */
1175
    int me_pre_cmp;
1176

    
1177
    /**
1178
     * ME pre pass diamond size & shape.
1179
     * - encoding: set by user.
1180
     * - decoding: unused
1181
     */
1182
    int pre_dia_size;
1183

    
1184
    /**
1185
     * subpel ME quality.
1186
     * - encoding: set by user.
1187
     * - decoding: unused
1188
     */
1189
    int me_subpel_quality;
1190

    
1191
    /**
1192
     * callback to negotiate the pixelFormat.
1193
     * @param fmt is the list of formats which are supported by the codec,
1194
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1195
     * the first is allways the native one
1196
     * @return the choosen format
1197
     * - encoding: unused
1198
     * - decoding: set by user, if not set then the native format will always be choosen
1199
     */
1200
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1201

    
1202
    /**
1203
     * DTG active format information (additionnal aspect ratio
1204
     * information only used in DVB MPEG2 transport streams). 0 if
1205
     * not set.
1206
     * 
1207
     * - encoding: unused.
1208
     * - decoding: set by decoder 
1209
     */
1210
    int dtg_active_format;
1211
#define FF_DTG_AFD_SAME         8
1212
#define FF_DTG_AFD_4_3          9
1213
#define FF_DTG_AFD_16_9         10
1214
#define FF_DTG_AFD_14_9         11
1215
#define FF_DTG_AFD_4_3_SP_14_9  13
1216
#define FF_DTG_AFD_16_9_SP_14_9 14
1217
#define FF_DTG_AFD_SP_4_3       15
1218

    
1219
    /**
1220
     * Maximum motion estimation search range in subpel units.
1221
     * if 0 then no limit
1222
     * 
1223
     * - encoding: set by user.
1224
     * - decoding: unused.
1225
     */
1226
    int me_range;
1227

    
1228
    /**
1229
     * frame_rate_base.
1230
     * for variable fps this is 1
1231
     * - encoding: set by user.
1232
     * - decoding: set by lavc.
1233
     * @todo move this after frame_rate
1234
     */
1235

    
1236
    int frame_rate_base;
1237
    /**
1238
     * intra quantizer bias.
1239
     * - encoding: set by user.
1240
     * - decoding: unused
1241
     */
1242
    int intra_quant_bias;
1243
#define FF_DEFAULT_QUANT_BIAS 999999
1244
    
1245
    /**
1246
     * inter quantizer bias.
1247
     * - encoding: set by user.
1248
     * - decoding: unused
1249
     */
1250
    int inter_quant_bias;
1251

    
1252
    /**
1253
     * color table ID.
1254
     * - encoding: unused.
1255
     * - decoding: which clrtable should be used for 8bit RGB images
1256
     *             table have to be stored somewhere FIXME
1257
     */
1258
    int color_table_id;
1259
    
1260
    /**
1261
     * internal_buffer count. 
1262
     * Dont touch, used by lavc default_get_buffer()
1263
     */
1264
    int internal_buffer_count;
1265
    
1266
    /**
1267
     * internal_buffers. 
1268
     * Dont touch, used by lavc default_get_buffer()
1269
     */
1270
    void *internal_buffer;
1271

    
1272
#define FF_LAMBDA_SHIFT 7
1273
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1274
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1275
#define FF_LAMBDA_MAX (256*128-1)
1276

    
1277
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1278
    /**
1279
     * global quality for codecs which cannot change it per frame.
1280
     * this should be proportional to MPEG1/2/4 qscale.
1281
     * - encoding: set by user.
1282
     * - decoding: unused
1283
     */
1284
    int global_quality;
1285
    
1286
#define FF_CODER_TYPE_VLC   0
1287
#define FF_CODER_TYPE_AC    1
1288
    /**
1289
     * coder type
1290
     * - encoding: set by user.
1291
     * - decoding: unused
1292
     */
1293
    int coder_type;
1294

    
1295
    /**
1296
     * context model
1297
     * - encoding: set by user.
1298
     * - decoding: unused
1299
     */
1300
    int context_model;
1301
    
1302
    /**
1303
     * slice flags
1304
     * - encoding: unused
1305
     * - decoding: set by user.
1306
     */
1307
    int slice_flags;
1308
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1309
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1310
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1311

    
1312
    /**
1313
     * XVideo Motion Acceleration
1314
     * - encoding: forbidden
1315
     * - decoding: set by decoder
1316
     */
1317
    int xvmc_acceleration;
1318
    
1319
    /**
1320
     * macroblock decision mode
1321
     * - encoding: set by user.
1322
     * - decoding: unused
1323
     */
1324
    int mb_decision;
1325
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1326
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1327
#define FF_MB_DECISION_RD     2        ///< rate distoration
1328

    
1329
    /**
1330
     * custom intra quantization matrix
1331
     * - encoding: set by user, can be NULL
1332
     * - decoding: set by lavc
1333
     */
1334
    uint16_t *intra_matrix;
1335

    
1336
    /**
1337
     * custom inter quantization matrix
1338
     * - encoding: set by user, can be NULL
1339
     * - decoding: set by lavc
1340
     */
1341
    uint16_t *inter_matrix;
1342
    
1343
    /**
1344
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1345
     * this is used to workaround some encoder bugs
1346
     * - encoding: unused
1347
     * - decoding: set by user, will be converted to upper case by lavc during init
1348
     */
1349
    unsigned int stream_codec_tag;
1350

    
1351
    /**
1352
     * scene change detection threshold.
1353
     * 0 is default, larger means fewer detected scene changes
1354
     * - encoding: set by user.
1355
     * - decoding: unused
1356
     */
1357
    int scenechange_threshold;
1358

    
1359
    /**
1360
     * minimum lagrange multipler
1361
     * - encoding: set by user.
1362
     * - decoding: unused
1363
     */
1364
    int lmin;
1365

    
1366
    /**
1367
     * maximum lagrange multipler
1368
     * - encoding: set by user.
1369
     * - decoding: unused
1370
     */
1371
    int lmax;
1372

    
1373
    /**
1374
     * Palette control structure
1375
     * - encoding: ??? (no palette-enabled encoder yet)
1376
     * - decoding: set by user.
1377
     */
1378
    struct AVPaletteControl *palctrl;
1379

    
1380
    /**
1381
     * noise reduction strength
1382
     * - encoding: set by user.
1383
     * - decoding: unused
1384
     */
1385
    int noise_reduction;
1386
    
1387
    /**
1388
     * Conditional replenishment support
1389
     * - encoding: unused
1390
     * - decoding: set by user, if 1 user can allocate reusable buffers
1391
     */
1392
    int cr_available;
1393
    
1394
} AVCodecContext;
1395

    
1396

    
1397
/**
1398
 * AVOption.
1399
 */
1400
typedef struct AVOption {
1401
    /** options' name */
1402
    const char *name; /* if name is NULL, it indicates a link to next */
1403
    /** short English text help or const struct AVOption* subpointer */
1404
    const char *help; //        const struct AVOption* sub;
1405
    /** offset to context structure where the parsed value should be stored */
1406
    int offset;
1407
    /** options' type */
1408
    int type;
1409
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1410
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1411
#define FF_OPT_TYPE_INT 3       ///< integer
1412
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1413
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1414
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1415
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1416
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1417
    /** min value  (min == max   ->  no limits) */
1418
    double min;
1419
    /** maximum value for double/int */
1420
    double max;
1421
    /** default boo [0,1]l/double/int value */
1422
    double defval;
1423
    /**
1424
     * default string value (with optional semicolon delimited extra option-list
1425
     * i.e.   option1;option2;option3
1426
     * defval might select other then first argument as default
1427
     */
1428
    const char *defstr;
1429
#define FF_OPT_MAX_DEPTH 10
1430
} AVOption;
1431

    
1432
/**
1433
 * Parse option(s) and sets fields in passed structure
1434
 * @param strct        structure where the parsed results will be written
1435
 * @param list  list with AVOptions
1436
 * @param opts        string with options for parsing
1437
 */
1438
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1439

    
1440

    
1441
/**
1442
 * AVCodec.
1443
 */
1444
typedef struct AVCodec {
1445
    const char *name;
1446
    enum CodecType type;
1447
    int id;
1448
    int priv_data_size;
1449
    int (*init)(AVCodecContext *);
1450
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1451
    int (*close)(AVCodecContext *);
1452
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1453
                  uint8_t *buf, int buf_size);
1454
    int capabilities;
1455
    const AVOption *options;
1456
    struct AVCodec *next;
1457
    void (*flush)(AVCodecContext *);
1458
} AVCodec;
1459

    
1460
/**
1461
 * four components are given, that's all.
1462
 * the last component is alpha
1463
 */
1464
typedef struct AVPicture {
1465
    uint8_t *data[4];
1466
    int linesize[4];       ///< number of bytes per line
1467
} AVPicture;
1468

    
1469
/**
1470
 * AVPaletteControl
1471
 * This structure defines a method for communicating palette changes
1472
 * between and demuxer and a decoder.
1473
 */
1474
#define AVPALETTE_SIZE 1024
1475
#define AVPALETTE_COUNT 256
1476
typedef struct AVPaletteControl {
1477

    
1478
    /* demuxer sets this to 1 to indicate the palette has changed;
1479
     * decoder resets to 0 */
1480
    int palette_changed;
1481

    
1482
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1483
     * the individual palette components should be on a 8-bit scale; if
1484
     * the palette data comes from a IBM VGA native format, the component
1485
     * data is probably 6 bits in size and needs to be scaled */
1486
    unsigned int palette[AVPALETTE_COUNT];
1487

    
1488
} AVPaletteControl;
1489

    
1490
extern AVCodec ac3_encoder;
1491
extern AVCodec mp2_encoder;
1492
extern AVCodec mp3lame_encoder;
1493
extern AVCodec oggvorbis_encoder;
1494
extern AVCodec faac_encoder;
1495
extern AVCodec mpeg1video_encoder;
1496
extern AVCodec mpeg2video_encoder;
1497
extern AVCodec h263_encoder;
1498
extern AVCodec h263p_encoder;
1499
extern AVCodec flv_encoder;
1500
extern AVCodec rv10_encoder;
1501
extern AVCodec mjpeg_encoder;
1502
extern AVCodec ljpeg_encoder;
1503
extern AVCodec mpeg4_encoder;
1504
extern AVCodec msmpeg4v1_encoder;
1505
extern AVCodec msmpeg4v2_encoder;
1506
extern AVCodec msmpeg4v3_encoder;
1507
extern AVCodec wmv1_encoder;
1508
extern AVCodec wmv2_encoder;
1509
extern AVCodec huffyuv_encoder;
1510
extern AVCodec h264_encoder;
1511
extern AVCodec asv1_encoder;
1512
extern AVCodec asv2_encoder;
1513
extern AVCodec vcr1_encoder;
1514
extern AVCodec ffv1_encoder;
1515
extern AVCodec mdec_encoder;
1516

    
1517
extern AVCodec h263_decoder;
1518
extern AVCodec mpeg4_decoder;
1519
extern AVCodec msmpeg4v1_decoder;
1520
extern AVCodec msmpeg4v2_decoder;
1521
extern AVCodec msmpeg4v3_decoder;
1522
extern AVCodec wmv1_decoder;
1523
extern AVCodec wmv2_decoder;
1524
extern AVCodec mpeg1video_decoder;
1525
extern AVCodec mpeg2video_decoder;
1526
extern AVCodec mpeg_xvmc_decoder;
1527
extern AVCodec h263i_decoder;
1528
extern AVCodec flv_decoder;
1529
extern AVCodec rv10_decoder;
1530
extern AVCodec svq1_decoder;
1531
extern AVCodec svq3_decoder;
1532
extern AVCodec dvvideo_decoder;
1533
extern AVCodec wmav1_decoder;
1534
extern AVCodec wmav2_decoder;
1535
extern AVCodec mjpeg_decoder;
1536
extern AVCodec mjpegb_decoder;
1537
extern AVCodec sp5x_decoder;
1538
extern AVCodec mp2_decoder;
1539
extern AVCodec mp3_decoder;
1540
extern AVCodec mace3_decoder;
1541
extern AVCodec mace6_decoder;
1542
extern AVCodec huffyuv_decoder;
1543
extern AVCodec oggvorbis_decoder;
1544
extern AVCodec cyuv_decoder;
1545
extern AVCodec h264_decoder;
1546
extern AVCodec indeo3_decoder;
1547
extern AVCodec vp3_decoder;
1548
extern AVCodec theora_decoder;
1549
extern AVCodec amr_nb_decoder;
1550
extern AVCodec amr_nb_encoder;
1551
extern AVCodec amr_wb_encoder;
1552
extern AVCodec amr_wb_decoder;
1553
extern AVCodec aac_decoder;
1554
extern AVCodec mpeg4aac_decoder;
1555
extern AVCodec asv1_decoder;
1556
extern AVCodec asv2_decoder;
1557
extern AVCodec vcr1_decoder;
1558
extern AVCodec cljr_decoder;
1559
extern AVCodec ffv1_decoder;
1560
extern AVCodec fourxm_decoder;
1561
extern AVCodec mdec_decoder;
1562
extern AVCodec roq_decoder;
1563
extern AVCodec interplay_video_decoder;
1564
extern AVCodec xan_wc3_decoder;
1565
extern AVCodec rpza_decoder;
1566
extern AVCodec cinepak_decoder;
1567
extern AVCodec msrle_decoder;
1568
extern AVCodec msvideo1_decoder;
1569
extern AVCodec vqa_decoder;
1570
extern AVCodec idcin_decoder;
1571
extern AVCodec eightbps_decoder;
1572
extern AVCodec smc_decoder;
1573
extern AVCodec ra_144_decoder;
1574
extern AVCodec ra_288_decoder;
1575
extern AVCodec roq_dpcm_decoder;
1576
extern AVCodec interplay_dpcm_decoder;
1577
extern AVCodec xan_dpcm_decoder;
1578

    
1579
/* pcm codecs */
1580
#define PCM_CODEC(id, name) \
1581
extern AVCodec name ## _decoder; \
1582
extern AVCodec name ## _encoder
1583

    
1584
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1585
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1586
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1587
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1588
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1589
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1590
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1591
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1592

    
1593
/* adpcm codecs */
1594

    
1595
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1596
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1597
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1598
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1599
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1600
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1601
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1602
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1603
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1604

    
1605
#undef PCM_CODEC
1606

    
1607
/* dummy raw video codec */
1608
extern AVCodec rawvideo_encoder;
1609
extern AVCodec rawvideo_decoder;
1610

    
1611
/* the following codecs use external GPL libs */
1612
extern AVCodec ac3_decoder;
1613

    
1614
/* resample.c */
1615

    
1616
struct ReSampleContext;
1617

    
1618
typedef struct ReSampleContext ReSampleContext;
1619

    
1620
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1621
                                     int output_rate, int input_rate);
1622
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1623
void audio_resample_close(ReSampleContext *s);
1624

    
1625
/* YUV420 format is assumed ! */
1626

    
1627
struct ImgReSampleContext;
1628

    
1629
typedef struct ImgReSampleContext ImgReSampleContext;
1630

    
1631
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1632
                                      int input_width, int input_height);
1633

    
1634
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1635
                                      int iwidth, int iheight,
1636
                                      int topBand, int bottomBand,
1637
                                      int leftBand, int rightBand);
1638

    
1639
void img_resample(ImgReSampleContext *s, 
1640
                  AVPicture *output, const AVPicture *input);
1641

    
1642
void img_resample_close(ImgReSampleContext *s);
1643

    
1644
/**
1645
 * Allocate memory for a picture.  Call avpicture_free to free it.
1646
 *
1647
 * @param picture the picture to be filled in.
1648
 * @param pix_fmt the format of the picture.
1649
 * @param width the width of the picture.
1650
 * @param height the height of the picture.
1651
 * @return 0 if successful, -1 if not.
1652
 */
1653
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1654

    
1655
/* Free a picture previously allocated by avpicture_alloc. */
1656
void avpicture_free(AVPicture *picture);
1657

    
1658
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1659
                   int pix_fmt, int width, int height);
1660
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1661
                     unsigned char *dest, int dest_size);
1662
int avpicture_get_size(int pix_fmt, int width, int height);
1663
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1664
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1665
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1666

    
1667
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1668
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1669
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1670
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1671
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1672
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1673

    
1674
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1675
                             int has_alpha);
1676
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1677
                              int has_alpha, int *loss_ptr);
1678

    
1679
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1680
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1681
int img_get_alpha_info(const AVPicture *src,
1682
                       int pix_fmt, int width, int height);
1683

    
1684
/* convert among pixel formats */
1685
int img_convert(AVPicture *dst, int dst_pix_fmt,
1686
                const AVPicture *src, int pix_fmt, 
1687
                int width, int height);
1688

    
1689
/* deinterlace a picture */
1690
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1691
                          int pix_fmt, int width, int height);
1692

    
1693
/* external high level API */
1694

    
1695
extern AVCodec *first_avcodec;
1696

    
1697
/* returns LIBAVCODEC_VERSION_INT constant */
1698
unsigned avcodec_version(void);
1699
/* returns LIBAVCODEC_BUILD constant */
1700
unsigned avcodec_build(void);
1701
void avcodec_init(void);
1702

    
1703
void register_avcodec(AVCodec *format);
1704
AVCodec *avcodec_find_encoder(enum CodecID id);
1705
AVCodec *avcodec_find_encoder_by_name(const char *name);
1706
AVCodec *avcodec_find_decoder(enum CodecID id);
1707
AVCodec *avcodec_find_decoder_by_name(const char *name);
1708
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1709

    
1710
void avcodec_get_context_defaults(AVCodecContext *s);
1711
AVCodecContext *avcodec_alloc_context(void);
1712
AVFrame *avcodec_alloc_frame(void);
1713

    
1714
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1715
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1716
void avcodec_default_free_buffers(AVCodecContext *s);
1717

    
1718
/**
1719
 * opens / inits the AVCodecContext.
1720
 * not thread save!
1721
 */
1722
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1723

    
1724
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1725
                         int *frame_size_ptr,
1726
                         uint8_t *buf, int buf_size);
1727
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1728
                         int *got_picture_ptr,
1729
                         uint8_t *buf, int buf_size);
1730
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1731
                        int *data_size_ptr,
1732
                        uint8_t *buf, int buf_size);
1733
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1734
                         const short *samples);
1735
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1736
                         const AVFrame *pict);
1737

    
1738
int avcodec_close(AVCodecContext *avctx);
1739

    
1740
void avcodec_register_all(void);
1741

    
1742
void avcodec_flush_buffers(AVCodecContext *avctx);
1743

    
1744
/* misc usefull functions */
1745

    
1746
/**
1747
 * returns a single letter to describe the picture type
1748
 */
1749
char av_get_pict_type_char(int pict_type);
1750

    
1751
/**
1752
 * reduce a fraction.
1753
 * this is usefull for framerate calculations
1754
 * @param max the maximum allowed for dst_nom & dst_den
1755
 * @return 1 if exact, 0 otherwise
1756
 */
1757
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1758

    
1759
/**
1760
 * rescale a 64bit integer.
1761
 * a simple a*b/c isnt possible as it can overflow
1762
 */
1763
int64_t av_rescale(int64_t a, int b, int c);
1764

    
1765

    
1766
/**
1767
 * Interface for 0.5.0 version
1768
 *
1769
 * do not even think about it's usage for this moment
1770
 */
1771

    
1772
typedef struct {
1773
    /// compressed size used from given memory buffer
1774
    int size;
1775
    /// I/P/B frame type
1776
    int frame_type;
1777
} avc_enc_result_t;
1778

    
1779
/**
1780
 * Commands
1781
 * order can't be changed - once it was defined
1782
 */
1783
typedef enum {
1784
    // general commands
1785
    AVC_OPEN_BY_NAME = 0xACA000,
1786
    AVC_OPEN_BY_CODEC_ID,
1787
    AVC_OPEN_BY_FOURCC,
1788
    AVC_CLOSE,
1789

    
1790
    AVC_FLUSH,
1791
    // pin - struct { uint8_t* src, uint_t src_size }
1792
    // pout - struct { AVPicture* img, consumed_bytes,
1793
    AVC_DECODE,
1794
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1795
    // pout - uint_t used_from_dest_size
1796
    AVC_ENCODE, 
1797

    
1798
    // query/get video commands
1799
    AVC_GET_VERSION = 0xACB000,
1800
    AVC_GET_WIDTH,
1801
    AVC_GET_HEIGHT,
1802
    AVC_GET_DELAY,
1803
    AVC_GET_QUANT_TABLE,
1804
    // ...
1805

    
1806
    // query/get audio commands
1807
    AVC_GET_FRAME_SIZE = 0xABC000,
1808

    
1809
    // maybe define some simple structure which
1810
    // might be passed to the user - but they can't
1811
    // contain any codec specific parts and these
1812
    // calls are usualy necessary only few times
1813

    
1814
    // set video commands
1815
    AVC_SET_WIDTH = 0xACD000,
1816
    AVC_SET_HEIGHT,
1817

    
1818
    // set video encoding commands
1819
    AVC_SET_FRAME_RATE = 0xACD800,
1820
    AVC_SET_QUALITY,
1821
    AVC_SET_HURRY_UP,
1822

    
1823
    // set audio commands
1824
    AVC_SET_SAMPLE_RATE = 0xACE000,
1825
    AVC_SET_CHANNELS,
1826

    
1827
} avc_cmd_t;
1828

    
1829
/**
1830
 * \param handle  allocated private structure by libavcodec
1831
 *                for initialization pass NULL - will be returned pout
1832
 *                user is supposed to know nothing about its structure
1833
 * \param cmd     type of operation to be performed
1834
 * \param pint    input parameter
1835
 * \param pout    output parameter
1836
 *
1837
 * \returns  command status - eventually for query command it might return
1838
 * integer resulting value
1839
 */
1840
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1841

    
1842
/* memory */
1843
void *av_malloc(unsigned int size);
1844
void *av_mallocz(unsigned int size);
1845
void *av_realloc(void *ptr, unsigned int size);
1846
void av_free(void *ptr);
1847
char *av_strdup(const char *s);
1848
void __av_freep(void **ptr);
1849
#define av_freep(p) __av_freep((void **)(p))
1850
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1851
/* for static data only */
1852
/* call av_free_static to release all staticaly allocated tables */
1853
void av_free_static(void);
1854
void *__av_mallocz_static(void** location, unsigned int size);
1855
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1856

    
1857
/* add by bero : in adx.c */
1858
int is_adx(const unsigned char *buf,size_t bufsize);
1859

    
1860
/* av_log API */
1861

    
1862
#include <stdarg.h>
1863

    
1864
#define AV_LOG_ERROR 0
1865
#define AV_LOG_INFO 1
1866
#define AV_LOG_DEBUG 2
1867

    
1868
extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
1869
extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
1870
extern int av_log_get_level(void);
1871
extern void av_log_set_level(int);
1872
extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
1873

    
1874
#undef  AV_LOG_TRAP_PRINTF
1875
#ifdef AV_LOG_TRAP_PRINTF
1876
#define printf DO NOT USE
1877
#define fprintf DO NOT USE
1878
#undef stderr
1879
#define stderr DO NOT USE
1880
#endif
1881

    
1882
#ifdef __cplusplus
1883
}
1884
#endif
1885

    
1886
#endif /* AVCODEC_H */