Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 689abe56

History | View | Annotate | Download (71.5 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
//FIXME the following 2 really dont belong in here
18
#define FFMPEG_VERSION_INT     0x000409
19
#define FFMPEG_VERSION         "CVS"
20

    
21
#define AV_STRINGIFY(s)        AV_TOSTRING(s)
22
#define AV_TOSTRING(s) #s
23

    
24
#define LIBAVCODEC_VERSION_INT ((50<<16)+(1<<8)+0)
25
#define LIBAVCODEC_VERSION     50.1.0
26
#define LIBAVCODEC_BUILD       LIBAVCODEC_VERSION_INT
27

    
28
#define LIBAVCODEC_IDENT       "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
29

    
30
#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
31
#define AV_TIME_BASE 1000000
32
#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
33

    
34
enum CodecID {
35
    CODEC_ID_NONE, 
36
    CODEC_ID_MPEG1VIDEO,
37
    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
38
    CODEC_ID_MPEG2VIDEO_XVMC,
39
    CODEC_ID_H261,
40
    CODEC_ID_H263,
41
    CODEC_ID_RV10,
42
    CODEC_ID_RV20,
43
    CODEC_ID_MJPEG,
44
    CODEC_ID_MJPEGB,
45
    CODEC_ID_LJPEG,
46
    CODEC_ID_SP5X,
47
    CODEC_ID_MPEG4,
48
    CODEC_ID_RAWVIDEO,
49
    CODEC_ID_MSMPEG4V1,
50
    CODEC_ID_MSMPEG4V2,
51
    CODEC_ID_MSMPEG4V3,
52
    CODEC_ID_WMV1,
53
    CODEC_ID_WMV2,
54
    CODEC_ID_H263P,
55
    CODEC_ID_H263I,
56
    CODEC_ID_FLV1,
57
    CODEC_ID_SVQ1,
58
    CODEC_ID_SVQ3,
59
    CODEC_ID_DVVIDEO,
60
    CODEC_ID_HUFFYUV,
61
    CODEC_ID_CYUV,
62
    CODEC_ID_H264,
63
    CODEC_ID_INDEO3,
64
    CODEC_ID_VP3,
65
    CODEC_ID_THEORA,
66
    CODEC_ID_ASV1,
67
    CODEC_ID_ASV2,
68
    CODEC_ID_FFV1,
69
    CODEC_ID_4XM,
70
    CODEC_ID_VCR1,
71
    CODEC_ID_CLJR,
72
    CODEC_ID_MDEC,
73
    CODEC_ID_ROQ,
74
    CODEC_ID_INTERPLAY_VIDEO,
75
    CODEC_ID_XAN_WC3,
76
    CODEC_ID_XAN_WC4,
77
    CODEC_ID_RPZA,
78
    CODEC_ID_CINEPAK,
79
    CODEC_ID_WS_VQA,
80
    CODEC_ID_MSRLE,
81
    CODEC_ID_MSVIDEO1,
82
    CODEC_ID_IDCIN,
83
    CODEC_ID_8BPS,
84
    CODEC_ID_SMC,
85
    CODEC_ID_FLIC,
86
    CODEC_ID_TRUEMOTION1,
87
    CODEC_ID_VMDVIDEO,
88
    CODEC_ID_MSZH,
89
    CODEC_ID_ZLIB,
90
    CODEC_ID_QTRLE,
91
    CODEC_ID_SNOW,
92
    CODEC_ID_TSCC,
93
    CODEC_ID_ULTI,
94
    CODEC_ID_QDRAW,
95
    CODEC_ID_VIXL,
96
    CODEC_ID_QPEG,
97
    CODEC_ID_XVID,
98
    CODEC_ID_PNG,
99
    CODEC_ID_PPM,
100
    CODEC_ID_PBM,
101
    CODEC_ID_PGM,
102
    CODEC_ID_PGMYUV,
103
    CODEC_ID_PAM,
104
    CODEC_ID_FFVHUFF,
105
    CODEC_ID_RV30,
106
    CODEC_ID_RV40,
107
    CODEC_ID_VC9,
108
    CODEC_ID_WMV3,
109
    CODEC_ID_LOCO,
110
    CODEC_ID_WNV1,
111
    CODEC_ID_AASC,
112
    CODEC_ID_INDEO2,
113
    CODEC_ID_FRAPS,
114
    CODEC_ID_TRUEMOTION2,
115

    
116
    /* various pcm "codecs" */
117
    CODEC_ID_PCM_S16LE= 0x10000,
118
    CODEC_ID_PCM_S16BE,
119
    CODEC_ID_PCM_U16LE,
120
    CODEC_ID_PCM_U16BE,
121
    CODEC_ID_PCM_S8,
122
    CODEC_ID_PCM_U8,
123
    CODEC_ID_PCM_MULAW,
124
    CODEC_ID_PCM_ALAW,
125
    CODEC_ID_PCM_S32LE,
126
    CODEC_ID_PCM_S32BE,
127
    CODEC_ID_PCM_U32LE,
128
    CODEC_ID_PCM_U32BE,
129
    CODEC_ID_PCM_S24LE,
130
    CODEC_ID_PCM_S24BE,
131
    CODEC_ID_PCM_U24LE,
132
    CODEC_ID_PCM_U24BE,
133
    CODEC_ID_PCM_S24DAUD,
134

    
135
    /* various adpcm codecs */
136
    CODEC_ID_ADPCM_IMA_QT= 0x11000,
137
    CODEC_ID_ADPCM_IMA_WAV,
138
    CODEC_ID_ADPCM_IMA_DK3,
139
    CODEC_ID_ADPCM_IMA_DK4,
140
    CODEC_ID_ADPCM_IMA_WS,
141
    CODEC_ID_ADPCM_IMA_SMJPEG,
142
    CODEC_ID_ADPCM_MS,
143
    CODEC_ID_ADPCM_4XM,
144
    CODEC_ID_ADPCM_XA,
145
    CODEC_ID_ADPCM_ADX,
146
    CODEC_ID_ADPCM_EA,
147
    CODEC_ID_ADPCM_G726,
148
    CODEC_ID_ADPCM_CT,
149
    CODEC_ID_ADPCM_SWF,
150
    CODEC_ID_ADPCM_YAMAHA,
151

    
152
    /* AMR */
153
    CODEC_ID_AMR_NB= 0x12000,
154
    CODEC_ID_AMR_WB,
155

    
156
    /* RealAudio codecs*/
157
    CODEC_ID_RA_144= 0x13000,
158
    CODEC_ID_RA_288,
159

    
160
    /* various DPCM codecs */
161
    CODEC_ID_ROQ_DPCM= 0x14000,
162
    CODEC_ID_INTERPLAY_DPCM,
163
    CODEC_ID_XAN_DPCM,
164
    CODEC_ID_SOL_DPCM,
165
    
166
    CODEC_ID_MP2= 0x15000,
167
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
168
    CODEC_ID_AAC,
169
    CODEC_ID_MPEG4AAC,
170
    CODEC_ID_AC3,
171
    CODEC_ID_DTS,
172
    CODEC_ID_VORBIS,
173
    CODEC_ID_DVAUDIO,
174
    CODEC_ID_WMAV1,
175
    CODEC_ID_WMAV2,
176
    CODEC_ID_MACE3,
177
    CODEC_ID_MACE6,
178
    CODEC_ID_VMDAUDIO,
179
    CODEC_ID_SONIC,
180
    CODEC_ID_SONIC_LS,
181
    CODEC_ID_FLAC,
182
    CODEC_ID_MP3ADU,
183
    CODEC_ID_MP3ON4,
184
    CODEC_ID_SHORTEN,
185
    CODEC_ID_ALAC,
186
    CODEC_ID_WESTWOOD_SND1,
187
    CODEC_ID_GSM,    
188
    CODEC_ID_QDM2,
189
    
190
    CODEC_ID_OGGTHEORA= 0x16000, 
191

    
192
    /* subtitle codecs */
193
    CODEC_ID_DVD_SUBTITLE= 0x17000, 
194
    CODEC_ID_DVB_SUBTITLE, 
195
    
196
    CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
197
                         stream (only used by libavformat) */
198
};
199

    
200
/* CODEC_ID_MP3LAME is absolete */
201
#define CODEC_ID_MP3LAME CODEC_ID_MP3
202

    
203
enum CodecType {
204
    CODEC_TYPE_UNKNOWN = -1,
205
    CODEC_TYPE_VIDEO,
206
    CODEC_TYPE_AUDIO,
207
    CODEC_TYPE_DATA,
208
    CODEC_TYPE_SUBTITLE,
209
};
210

    
211
/**
212
 * Pixel format. Notes: 
213
 *
214
 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
215
 * color is put together as:
216
 *  (A << 24) | (R << 16) | (G << 8) | B
217
 * This is stored as BGRA on little endian CPU architectures and ARGB on
218
 * big endian CPUs.
219
 *
220
 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
221
 * image data is stored in AVFrame.data[0]. The palette is transported in
222
 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
223
 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
224
 * also endian-specific). Note also that the individual RGB palette
225
 * components stored in AVFrame.data[1] should be in the range 0..255.
226
 * This is important as many custom PAL8 video codecs that were designed
227
 * to run on the IBM VGA graphics adapter use 6-bit palette components.
228
 */
229
enum PixelFormat {
230
    PIX_FMT_NONE= -1,
231
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
232
    PIX_FMT_YUV422,    ///< Packed pixel, Y0 Cb Y1 Cr 
233
    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
234
    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
235
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
236
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
237
    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
238
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
239
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
240
    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
241
    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
242
    PIX_FMT_GRAY8,
243
    PIX_FMT_MONOWHITE, ///< 0 is white 
244
    PIX_FMT_MONOBLACK, ///< 0 is black 
245
    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
246
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
247
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
248
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
249
    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
250
    PIX_FMT_XVMC_MPEG2_IDCT,
251
    PIX_FMT_UYVY422,   ///< Packed pixel, Cb Y0 Cr Y1 
252
    PIX_FMT_UYVY411,   ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
253
    PIX_FMT_NB,
254
};
255

    
256
/* currently unused, may be used if 24/32 bits samples ever supported */
257
enum SampleFormat {
258
    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
259
    SAMPLE_FMT_S32,             ///< signed 32 bits 
260
    SAMPLE_FMT_FLT,             ///< float
261
    SAMPLE_FMT_DBL,             ///< double
262
};
263

    
264
/* in bytes */
265
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
266

    
267
/**
268
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
269
 * this is mainly needed because some optimized bitstream readers read 
270
 * 32 or 64 bit at once and could read over the end<br>
271
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
272
 * MPEG bitstreams could cause overread and segfault
273
 */
274
#define FF_INPUT_BUFFER_PADDING_SIZE 8
275

    
276
/**
277
 * minimum encoding buffer size.
278
 * used to avoid some checks during header writing
279
 */
280
#define FF_MIN_BUFFER_SIZE 16384
281

    
282
/* motion estimation type, EPZS by default */
283
enum Motion_Est_ID {
284
    ME_ZERO = 1,
285
    ME_FULL,
286
    ME_LOG,
287
    ME_PHODS,
288
    ME_EPZS,
289
    ME_X1
290
};
291

    
292
enum AVDiscard{
293
//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
294
    AVDISCARD_NONE   =-16, ///< discard nothing
295
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
296
    AVDISCARD_NONREF =  8, ///< discard all non reference
297
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
298
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
299
    AVDISCARD_ALL    = 48, ///< discard all
300
};
301

    
302
typedef struct RcOverride{
303
    int start_frame;
304
    int end_frame;
305
    int qscale; // if this is 0 then quality_factor will be used instead
306
    float quality_factor;
307
} RcOverride;
308

    
309
/* only for ME compatiblity with old apps */
310
extern int motion_estimation_method;
311

    
312
#define FF_MAX_B_FRAMES 8
313

    
314
/* encoding support
315
   these flags can be passed in AVCodecContext.flags before initing 
316
   Note: not everything is supported yet.
317
*/
318

    
319
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
320
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
321
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
322
#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
323
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
324
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
325
/* parent program gurantees that the input for b-frame containing streams is not written to 
326
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
327
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
328
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
329
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
330
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
331
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
332
#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
333
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
334
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
335
                                            of only at frame boundaries */
336
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
337
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
338
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
339
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
340
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
341
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
342
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
343
/* Fx : Flag for h263+ extra options */
344
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
345
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
346
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
347
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
348
#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
349
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
350
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
351
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
352
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
353
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
354
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
355
#define CODEC_FLAG_CLOSED_GOP     0x80000000
356
#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
357
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
358
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< skip bitstream encoding
359
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< place global headers at every keyframe instead of in extradata
360

    
361
/* Unsupported options :
362
 *                 Syntax Arithmetic coding (SAC)
363
 *                 Reference Picture Selection
364
 *                 Independant Segment Decoding */
365
/* /Fx */
366
/* codec capabilities */
367

    
368
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
369
/**
370
 * Codec uses get_buffer() for allocating buffers.
371
 * direct rendering method 1
372
 */
373
#define CODEC_CAP_DR1             0x0002
374
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
375
   used */
376
#define CODEC_CAP_PARSE_ONLY      0x0004
377
#define CODEC_CAP_TRUNCATED       0x0008
378
/* codec can export data for HW decoding (XvMC) */
379
#define CODEC_CAP_HWACCEL         0x0010
380
/** 
381
 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
382
 * if this is not set, the codec is guranteed to never be feeded with NULL data
383
 */
384
#define CODEC_CAP_DELAY           0x0020
385

    
386
//the following defines may change, don't expect compatibility if you use them
387
#define MB_TYPE_INTRA4x4   0x0001
388
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
389
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
390
#define MB_TYPE_16x16      0x0008
391
#define MB_TYPE_16x8       0x0010
392
#define MB_TYPE_8x16       0x0020
393
#define MB_TYPE_8x8        0x0040
394
#define MB_TYPE_INTERLACED 0x0080
395
#define MB_TYPE_DIRECT2     0x0100 //FIXME
396
#define MB_TYPE_ACPRED     0x0200
397
#define MB_TYPE_GMC        0x0400
398
#define MB_TYPE_SKIP       0x0800
399
#define MB_TYPE_P0L0       0x1000
400
#define MB_TYPE_P1L0       0x2000
401
#define MB_TYPE_P0L1       0x4000
402
#define MB_TYPE_P1L1       0x8000
403
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
404
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
405
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
406
#define MB_TYPE_QUANT      0x00010000
407
#define MB_TYPE_CBP        0x00020000
408
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
409

    
410
/**
411
 * Pan Scan area.
412
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
413
 */
414
typedef struct AVPanScan{
415
    /**
416
     * id.
417
     * - encoding: set by user.
418
     * - decoding: set by lavc
419
     */
420
    int id;
421

    
422
    /**
423
     * width and height in 1/16 pel
424
     * - encoding: set by user.
425
     * - decoding: set by lavc
426
     */
427
    int width;
428
    int height;
429

    
430
    /**
431
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
432
     * - encoding: set by user.
433
     * - decoding: set by lavc
434
     */
435
    int16_t position[3][2];
436
}AVPanScan;
437

    
438
#define FF_COMMON_FRAME \
439
    /**\
440
     * pointer to the picture planes.\
441
     * this might be different from the first allocated byte\
442
     * - encoding: \
443
     * - decoding: \
444
     */\
445
    uint8_t *data[4];\
446
    int linesize[4];\
447
    /**\
448
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
449
     * this isn't used by lavc unless the default get/release_buffer() is used\
450
     * - encoding: \
451
     * - decoding: \
452
     */\
453
    uint8_t *base[4];\
454
    /**\
455
     * 1 -> keyframe, 0-> not\
456
     * - encoding: set by lavc\
457
     * - decoding: set by lavc\
458
     */\
459
    int key_frame;\
460
\
461
    /**\
462
     * picture type of the frame, see ?_TYPE below.\
463
     * - encoding: set by lavc for coded_picture (and set by user for input)\
464
     * - decoding: set by lavc\
465
     */\
466
    int pict_type;\
467
\
468
    /**\
469
     * presentation timestamp in time_base units (time when frame should be shown to user)\
470
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
471
     * - encoding: MUST be set by user\
472
     * - decoding: set by lavc\
473
     */\
474
    int64_t pts;\
475
\
476
    /**\
477
     * picture number in bitstream order.\
478
     * - encoding: set by\
479
     * - decoding: set by lavc\
480
     */\
481
    int coded_picture_number;\
482
    /**\
483
     * picture number in display order.\
484
     * - encoding: set by\
485
     * - decoding: set by lavc\
486
     */\
487
    int display_picture_number;\
488
\
489
    /**\
490
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
491
     * - encoding: set by lavc for coded_picture (and set by user for input)\
492
     * - decoding: set by lavc\
493
     */\
494
    int quality; \
495
\
496
    /**\
497
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
498
     * set to INT_MAX if the buffer has not been used yet \
499
     * - encoding: unused\
500
     * - decoding: MUST be set by get_buffer()\
501
     */\
502
    int age;\
503
\
504
    /**\
505
     * is this picture used as reference\
506
     * - encoding: unused\
507
     * - decoding: set by lavc (before get_buffer() call))\
508
     */\
509
    int reference;\
510
\
511
    /**\
512
     * QP table\
513
     * - encoding: unused\
514
     * - decoding: set by lavc\
515
     */\
516
    int8_t *qscale_table;\
517
    /**\
518
     * QP store stride\
519
     * - encoding: unused\
520
     * - decoding: set by lavc\
521
     */\
522
    int qstride;\
523
\
524
    /**\
525
     * mbskip_table[mb]>=1 if MB didnt change\
526
     * stride= mb_width = (width+15)>>4\
527
     * - encoding: unused\
528
     * - decoding: set by lavc\
529
     */\
530
    uint8_t *mbskip_table;\
531
\
532
    /**\
533
     * Motion vector table.\
534
     * @code\
535
     * example:\
536
     * int mv_sample_log2= 4 - motion_subsample_log2;\
537
     * int mb_width= (width+15)>>4;\
538
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
539
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
540
     * @endcode\
541
     * - encoding: set by user\
542
     * - decoding: set by lavc\
543
     */\
544
    int16_t (*motion_val[2])[2];\
545
\
546
    /**\
547
     * Macroblock type table\
548
     * mb_type_base + mb_width + 2\
549
     * - encoding: set by user\
550
     * - decoding: set by lavc\
551
     */\
552
    uint32_t *mb_type;\
553
\
554
    /**\
555
     * log2 of the size of the block which a single vector in motion_val represents: \
556
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
557
     * - encoding: unused\
558
     * - decoding: set by lavc\
559
     */\
560
    uint8_t motion_subsample_log2;\
561
\
562
    /**\
563
     * for some private data of the user\
564
     * - encoding: unused\
565
     * - decoding: set by user\
566
     */\
567
    void *opaque;\
568
\
569
    /**\
570
     * error\
571
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
572
     * - decoding: unused\
573
     */\
574
    uint64_t error[4];\
575
\
576
    /**\
577
     * type of the buffer (to keep track of who has to dealloc data[*])\
578
     * - encoding: set by the one who allocs it\
579
     * - decoding: set by the one who allocs it\
580
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
581
     */\
582
    int type;\
583
    \
584
    /**\
585
     * when decoding, this signal how much the picture must be delayed.\
586
     * extra_delay = repeat_pict / (2*fps)\
587
     * - encoding: unused\
588
     * - decoding: set by lavc\
589
     */\
590
    int repeat_pict;\
591
    \
592
    /**\
593
     * \
594
     */\
595
    int qscale_type;\
596
    \
597
    /**\
598
     * The content of the picture is interlaced.\
599
     * - encoding: set by user\
600
     * - decoding: set by lavc (default 0)\
601
     */\
602
    int interlaced_frame;\
603
    \
604
    /**\
605
     * if the content is interlaced, is top field displayed first.\
606
     * - encoding: set by user\
607
     * - decoding: set by lavc\
608
     */\
609
    int top_field_first;\
610
    \
611
    /**\
612
     * Pan scan.\
613
     * - encoding: set by user\
614
     * - decoding: set by lavc\
615
     */\
616
    AVPanScan *pan_scan;\
617
    \
618
    /**\
619
     * tell user application that palette has changed from previous frame.\
620
     * - encoding: ??? (no palette-enabled encoder yet)\
621
     * - decoding: set by lavc (default 0)\
622
     */\
623
    int palette_has_changed;\
624
    \
625
    /**\
626
     * Codec suggestion on buffer type if != 0\
627
     * - encoding: unused\
628
     * - decoding: set by lavc (before get_buffer() call))\
629
     */\
630
    int buffer_hints;\
631
\
632
    /**\
633
     * DCT coeffitients\
634
     * - encoding: unused\
635
     * - decoding: set by lavc\
636
     */\
637
    short *dct_coeff;\
638
\
639
    /**\
640
     * Motion referece frame index\
641
     * - encoding: set by user\
642
     * - decoding: set by lavc\
643
     */\
644
    int8_t *ref_index[2];
645

    
646
#define FF_QSCALE_TYPE_MPEG1        0
647
#define FF_QSCALE_TYPE_MPEG2        1
648

    
649
#define FF_BUFFER_TYPE_INTERNAL 1
650
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
651
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
652
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
653

    
654

    
655
#define FF_I_TYPE 1 // Intra
656
#define FF_P_TYPE 2 // Predicted
657
#define FF_B_TYPE 3 // Bi-dir predicted
658
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
659
#define FF_SI_TYPE 5
660
#define FF_SP_TYPE 6
661

    
662
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
663
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
664
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
665
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
666

    
667
/**
668
 * Audio Video Frame.
669
 */
670
typedef struct AVFrame {
671
    FF_COMMON_FRAME
672
} AVFrame;
673

    
674
#define DEFAULT_FRAME_RATE_BASE 1001000
675

    
676
/**
677
 * Used by av_log
678
 */
679
typedef struct AVCLASS AVClass;
680
struct AVCLASS {
681
    const char* class_name;
682
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
683
                                        or AVFormatContext, which begin with an AVClass.
684
                                        Needed because av_log is in libavcodec and has no visibility
685
                                        of AVIn/OutputFormat */
686
    struct AVOption *option;
687
};
688

    
689
/**
690
 * main external api structure.
691
 */
692
typedef struct AVCodecContext {
693
    /**
694
     * Info on struct for av_log
695
     * - set by avcodec_alloc_context
696
     */
697
    AVClass *av_class;
698
    /**
699
     * the average bitrate.
700
     * - encoding: set by user. unused for constant quantizer encoding
701
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
702
     */
703
    int bit_rate;
704

    
705
    /**
706
     * number of bits the bitstream is allowed to diverge from the reference.
707
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
708
     * - encoding: set by user. unused for constant quantizer encoding
709
     * - decoding: unused
710
     */
711
    int bit_rate_tolerance; 
712

    
713
    /**
714
     * CODEC_FLAG_*.
715
     * - encoding: set by user.
716
     * - decoding: set by user.
717
     */
718
    int flags;
719

    
720
    /**
721
     * some codecs needs additionnal format info. It is stored here
722
     * - encoding: set by user. 
723
     * - decoding: set by lavc. (FIXME is this ok?)
724
     */
725
    int sub_id;
726

    
727
    /**
728
     * motion estimation algorithm used for video coding.
729
     * - encoding: MUST be set by user.
730
     * - decoding: unused
731
     */
732
    int me_method;
733

    
734
    /**
735
     * some codecs need / can use extra-data like huffman tables.
736
     * mjpeg: huffman tables
737
     * rv10: additional flags
738
     * mpeg4: global headers (they can be in the bitstream or here)
739
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
740
     * then extradata_size to avoid prolems if its read with the bitstream reader
741
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
742
     * - encoding: set/allocated/freed by lavc.
743
     * - decoding: set/allocated/freed by user.
744
     */
745
    void *extradata;
746
    int extradata_size;
747
    
748
    /**
749
     * this is the fundamental unit of time (in seconds) in terms
750
     * of which frame timestamps are represented. for fixed-fps content,
751
     * timebase should be 1/framerate and timestamp increments should be
752
     * identically 1.
753
     * - encoding: MUST be set by user
754
     * - decoding: set by lavc.
755
     */
756
    AVRational time_base;
757
    
758
    /* video only */
759
    /**
760
     * picture width / height.
761
     * - encoding: MUST be set by user. 
762
     * - decoding: set by lavc.
763
     * Note, for compatibility its possible to set this instead of 
764
     * coded_width/height before decoding
765
     */
766
    int width, height;
767
    
768
#define FF_ASPECT_EXTENDED 15
769

    
770
    /**
771
     * the number of pictures in a group of pitures, or 0 for intra_only.
772
     * - encoding: set by user.
773
     * - decoding: unused
774
     */
775
    int gop_size;
776

    
777
    /**
778
     * pixel format, see PIX_FMT_xxx.
779
     * - encoding: set by user.
780
     * - decoding: set by lavc.
781
     */
782
    enum PixelFormat pix_fmt;
783
 
784
    /**
785
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
786
     * has to read frames at native frame rate.
787
     * - encoding: set by user.
788
     * - decoding: unused.
789
     */
790
    int rate_emu;
791
       
792
    /**
793
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
794
     * decoder to draw an horizontal band. It improve cache usage. Not
795
     * all codecs can do that. You must check the codec capabilities
796
     * before
797
     * - encoding: unused
798
     * - decoding: set by user.
799
     * @param height the height of the slice
800
     * @param y the y position of the slice
801
     * @param type 1->top field, 2->bottom field, 3->frame
802
     * @param offset offset into the AVFrame.data from which the slice should be read
803
     */
804
    void (*draw_horiz_band)(struct AVCodecContext *s,
805
                            const AVFrame *src, int offset[4],
806
                            int y, int type, int height);
807

    
808
    /* audio only */
809
    int sample_rate; ///< samples per sec 
810
    int channels;
811

    
812
    /**
813
     * audio sample format.
814
     * - encoding: set by user.
815
     * - decoding: set by lavc.
816
     */
817
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused 
818

    
819
    /* the following data should not be initialized */
820
    /**
821
     * samples per packet. initialized when calling 'init' 
822
     */
823
    int frame_size;
824
    int frame_number;   ///< audio or video frame number 
825
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
826
    
827
    /**
828
     * number of frames the decoded output will be delayed relative to 
829
     * the encoded input.
830
     * - encoding: set by lavc.
831
     * - decoding: unused
832
     */
833
    int delay;
834
    
835
    /* - encoding parameters */
836
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
837
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
838
    
839
    /**
840
     * minimum quantizer.
841
     * - encoding: set by user.
842
     * - decoding: unused
843
     */
844
    int qmin;
845

    
846
    /**
847
     * maximum quantizer.
848
     * - encoding: set by user.
849
     * - decoding: unused
850
     */
851
    int qmax;
852

    
853
    /**
854
     * maximum quantizer difference etween frames.
855
     * - encoding: set by user.
856
     * - decoding: unused
857
     */
858
    int max_qdiff;
859

    
860
    /**
861
     * maximum number of b frames between non b frames.
862
     * note: the output will be delayed by max_b_frames+1 relative to the input
863
     * - encoding: set by user.
864
     * - decoding: unused
865
     */
866
    int max_b_frames;
867

    
868
    /**
869
     * qscale factor between ip and b frames.
870
     * - encoding: set by user.
871
     * - decoding: unused
872
     */
873
    float b_quant_factor;
874
    
875
    /** obsolete FIXME remove */
876
    int rc_strategy;
877
    int b_frame_strategy;
878

    
879
    /**
880
     * hurry up amount.
881
     * deprecated in favor of skip_idct and skip_frame
882
     * - encoding: unused
883
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
884
     */
885
    int hurry_up;
886
    
887
    struct AVCodec *codec;
888
    
889
    void *priv_data;
890

    
891
    /* unused, FIXME remove*/
892
    int rtp_mode;
893
    
894
    int rtp_payload_size;   /* The size of the RTP payload: the coder will  */
895
                            /* do it's best to deliver a chunk with size    */
896
                            /* below rtp_payload_size, the chunk will start */
897
                            /* with a start code on some codecs like H.263  */
898
                            /* This doesn't take account of any particular  */
899
                            /* headers inside the transmited RTP payload    */
900

    
901
    
902
    /* The RTP callback: This function is called   */
903
    /* every time the encoder has a packet to send */
904
    /* Depends on the encoder if the data starts   */
905
    /* with a Start Code (it should) H.263 does.   */
906
    /* mb_nb contains the number of macroblocks    */
907
    /* encoded in the RTP payload                  */
908
    void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); 
909

    
910
    /* statistics, used for 2-pass encoding */
911
    int mv_bits;
912
    int header_bits;
913
    int i_tex_bits;
914
    int p_tex_bits;
915
    int i_count;
916
    int p_count;
917
    int skip_count;
918
    int misc_bits;
919
    
920
    /**
921
     * number of bits used for the previously encoded frame.
922
     * - encoding: set by lavc
923
     * - decoding: unused
924
     */
925
    int frame_bits;
926

    
927
    /**
928
     * private data of the user, can be used to carry app specific stuff.
929
     * - encoding: set by user
930
     * - decoding: set by user
931
     */
932
    void *opaque;
933

    
934
    char codec_name[32];
935
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
936
    enum CodecID codec_id; /* see CODEC_ID_xxx */
937
    
938
    /**
939
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
940
     * this is used to workaround some encoder bugs
941
     * - encoding: set by user, if not then the default based on codec_id will be used
942
     * - decoding: set by user, will be converted to upper case by lavc during init
943
     */
944
    unsigned int codec_tag;
945
    
946
    /**
947
     * workaround bugs in encoders which sometimes cannot be detected automatically.
948
     * - encoding: set by user
949
     * - decoding: set by user
950
     */
951
    int workaround_bugs;
952
#define FF_BUG_AUTODETECT       1  ///< autodetection
953
#define FF_BUG_OLD_MSMPEG4      2
954
#define FF_BUG_XVID_ILACE       4
955
#define FF_BUG_UMP4             8
956
#define FF_BUG_NO_PADDING       16
957
#define FF_BUG_AMV              32
958
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
959
#define FF_BUG_QPEL_CHROMA      64
960
#define FF_BUG_STD_QPEL         128
961
#define FF_BUG_QPEL_CHROMA2     256
962
#define FF_BUG_DIRECT_BLOCKSIZE 512
963
#define FF_BUG_EDGE             1024
964
#define FF_BUG_HPEL_CHROMA      2048
965
#define FF_BUG_DC_CLIP          4096
966
#define FF_BUG_MS               8192 ///< workaround various bugs in microsofts broken decoders
967
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
968
        
969
    /**
970
     * luma single coeff elimination threshold.
971
     * - encoding: set by user
972
     * - decoding: unused
973
     */
974
    int luma_elim_threshold;
975
    
976
    /**
977
     * chroma single coeff elimination threshold.
978
     * - encoding: set by user
979
     * - decoding: unused
980
     */
981
    int chroma_elim_threshold;
982
    
983
    /**
984
     * strictly follow the std (MPEG4, ...).
985
     * - encoding: set by user
986
     * - decoding: unused
987
     */
988
    int strict_std_compliance;
989
#define FF_COMPLIANCE_VERY_STRICT   2 ///< strictly conform to a older more strict version of the spec or reference software
990
#define FF_COMPLIANCE_STRICT        1 ///< strictly conform to all the things in the spec no matter what consequences
991
#define FF_COMPLIANCE_NORMAL        0
992
#define FF_COMPLIANCE_INOFFICIAL   -1 ///< allow inofficial extensions
993
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
994

    
995
    /**
996
     * qscale offset between ip and b frames.
997
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
998
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
999
     * - encoding: set by user.
1000
     * - decoding: unused
1001
     */
1002
    float b_quant_offset;
1003
    
1004
    /**
1005
     * error resilience higher values will detect more errors but may missdetect
1006
     * some more or less valid parts as errors.
1007
     * - encoding: unused
1008
     * - decoding: set by user
1009
     */
1010
    int error_resilience;
1011
#define FF_ER_CAREFUL         1
1012
#define FF_ER_COMPLIANT       2
1013
#define FF_ER_AGGRESSIVE      3
1014
#define FF_ER_VERY_AGGRESSIVE 4
1015
    
1016
    /**
1017
     * called at the beginning of each frame to get a buffer for it.
1018
     * if pic.reference is set then the frame will be read later by lavc
1019
     * avcodec_align_dimensions() should be used to find the required width and
1020
     * height, as they normally need to be rounded up to the next multiple of 16
1021
     * - encoding: unused
1022
     * - decoding: set by lavc, user can override
1023
     */
1024
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1025
    
1026
    /**
1027
     * called to release buffers which where allocated with get_buffer.
1028
     * a released buffer can be reused in get_buffer()
1029
     * pic.data[*] must be set to NULL
1030
     * - encoding: unused
1031
     * - decoding: set by lavc, user can override
1032
     */
1033
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1034

    
1035
    /**
1036
     * if 1 the stream has a 1 frame delay during decoding.
1037
     * - encoding: set by lavc
1038
     * - decoding: set by lavc
1039
     */
1040
    int has_b_frames;
1041

    
1042
    /**
1043
     * number of bytes per packet if constant and known or 0
1044
     * used by some WAV based audio codecs
1045
     */
1046
    int block_align;
1047
    
1048
    int parse_only; /* - decoding only: if true, only parsing is done
1049
                       (function avcodec_parse_frame()). The frame
1050
                       data is returned. Only MPEG codecs support this now. */
1051
    
1052
    /**
1053
     * 0-> h263 quant 1-> mpeg quant.
1054
     * - encoding: set by user.
1055
     * - decoding: unused
1056
     */
1057
    int mpeg_quant;
1058
    
1059
    /**
1060
     * pass1 encoding statistics output buffer.
1061
     * - encoding: set by lavc
1062
     * - decoding: unused
1063
     */
1064
    char *stats_out;
1065
    
1066
    /**
1067
     * pass2 encoding statistics input buffer.
1068
     * concatenated stuff from stats_out of pass1 should be placed here
1069
     * - encoding: allocated/set/freed by user
1070
     * - decoding: unused
1071
     */
1072
    char *stats_in;
1073
    
1074
    /**
1075
     * ratecontrol qmin qmax limiting method.
1076
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1077
     * - encoding: set by user.
1078
     * - decoding: unused
1079
     */
1080
    float rc_qsquish;
1081

    
1082
    float rc_qmod_amp;
1083
    int rc_qmod_freq;
1084
    
1085
    /**
1086
     * ratecontrol override, see RcOverride.
1087
     * - encoding: allocated/set/freed by user.
1088
     * - decoding: unused
1089
     */
1090
    RcOverride *rc_override;
1091
    int rc_override_count;
1092
    
1093
    /**
1094
     * rate control equation.
1095
     * - encoding: set by user
1096
     * - decoding: unused
1097
     */
1098
    char *rc_eq;
1099
    
1100
    /**
1101
     * maximum bitrate.
1102
     * - encoding: set by user.
1103
     * - decoding: unused
1104
     */
1105
    int rc_max_rate;
1106
    
1107
    /**
1108
     * minimum bitrate.
1109
     * - encoding: set by user.
1110
     * - decoding: unused
1111
     */
1112
    int rc_min_rate;
1113
    
1114
    /**
1115
     * decoder bitstream buffer size.
1116
     * - encoding: set by user.
1117
     * - decoding: unused
1118
     */
1119
    int rc_buffer_size;
1120
    float rc_buffer_aggressivity;
1121

    
1122
    /**
1123
     * qscale factor between p and i frames.
1124
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1125
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1126
     * - encoding: set by user.
1127
     * - decoding: unused
1128
     */
1129
    float i_quant_factor;
1130
    
1131
    /**
1132
     * qscale offset between p and i frames.
1133
     * - encoding: set by user.
1134
     * - decoding: unused
1135
     */
1136
    float i_quant_offset;
1137
    
1138
    /**
1139
     * initial complexity for pass1 ratecontrol.
1140
     * - encoding: set by user.
1141
     * - decoding: unused
1142
     */
1143
    float rc_initial_cplx;
1144

    
1145
    /**
1146
     * dct algorithm, see FF_DCT_* below.
1147
     * - encoding: set by user
1148
     * - decoding: unused
1149
     */
1150
    int dct_algo;
1151
#define FF_DCT_AUTO    0
1152
#define FF_DCT_FASTINT 1
1153
#define FF_DCT_INT     2
1154
#define FF_DCT_MMX     3
1155
#define FF_DCT_MLIB    4
1156
#define FF_DCT_ALTIVEC 5
1157
#define FF_DCT_FAAN    6
1158
    
1159
    /**
1160
     * luminance masking (0-> disabled).
1161
     * - encoding: set by user
1162
     * - decoding: unused
1163
     */
1164
    float lumi_masking;
1165
    
1166
    /**
1167
     * temporary complexity masking (0-> disabled).
1168
     * - encoding: set by user
1169
     * - decoding: unused
1170
     */
1171
    float temporal_cplx_masking;
1172
    
1173
    /**
1174
     * spatial complexity masking (0-> disabled).
1175
     * - encoding: set by user
1176
     * - decoding: unused
1177
     */
1178
    float spatial_cplx_masking;
1179
    
1180
    /**
1181
     * p block masking (0-> disabled).
1182
     * - encoding: set by user
1183
     * - decoding: unused
1184
     */
1185
    float p_masking;
1186

    
1187
    /**
1188
     * darkness masking (0-> disabled).
1189
     * - encoding: set by user
1190
     * - decoding: unused
1191
     */
1192
    float dark_masking;
1193
    
1194
    
1195
    /* for binary compatibility */
1196
    int unused;
1197
    
1198
    /**
1199
     * idct algorithm, see FF_IDCT_* below.
1200
     * - encoding: set by user
1201
     * - decoding: set by user
1202
     */
1203
    int idct_algo;
1204
#define FF_IDCT_AUTO         0
1205
#define FF_IDCT_INT          1
1206
#define FF_IDCT_SIMPLE       2
1207
#define FF_IDCT_SIMPLEMMX    3
1208
#define FF_IDCT_LIBMPEG2MMX  4
1209
#define FF_IDCT_PS2          5
1210
#define FF_IDCT_MLIB         6
1211
#define FF_IDCT_ARM          7
1212
#define FF_IDCT_ALTIVEC      8
1213
#define FF_IDCT_SH4          9
1214
#define FF_IDCT_SIMPLEARM    10
1215
#define FF_IDCT_H264         11
1216
#define FF_IDCT_VP3          12
1217
#define FF_IDCT_IPP          13
1218
#define FF_IDCT_XVIDMMX      14
1219

    
1220
    /**
1221
     * slice count.
1222
     * - encoding: set by lavc
1223
     * - decoding: set by user (or 0)
1224
     */
1225
    int slice_count;
1226
    /**
1227
     * slice offsets in the frame in bytes.
1228
     * - encoding: set/allocated by lavc
1229
     * - decoding: set/allocated by user (or NULL)
1230
     */
1231
    int *slice_offset;
1232

    
1233
    /**
1234
     * error concealment flags.
1235
     * - encoding: unused
1236
     * - decoding: set by user
1237
     */
1238
    int error_concealment;
1239
#define FF_EC_GUESS_MVS   1
1240
#define FF_EC_DEBLOCK     2
1241

    
1242
    /**
1243
     * dsp_mask could be add used to disable unwanted CPU features
1244
     * CPU features (i.e. MMX, SSE. ...)
1245
     *
1246
     * with FORCE flag you may instead enable given CPU features
1247
     * (Dangerous: usable in case of misdetection, improper usage however will
1248
     * result into program crash)
1249
     */
1250
    unsigned dsp_mask;
1251
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1252
    /* lower 16 bits - CPU features */
1253
#ifdef HAVE_MMX
1254
#define FF_MM_MMX        0x0001 /* standard MMX */
1255
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1256
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1257
#define FF_MM_SSE        0x0008 /* SSE functions */
1258
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1259
#define FF_MM_3DNOWEXT        0x0020 /* AMD 3DNowExt */
1260
#endif /* HAVE_MMX */
1261
#ifdef HAVE_IWMMXT
1262
#define FF_MM_IWMMXT        0x0100 /* XScale IWMMXT */
1263
#endif /* HAVE_IWMMXT */
1264

    
1265
    /**
1266
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1267
     * - encoding: set by lavc
1268
     * - decoding: set by user
1269
     */
1270
     int bits_per_sample;
1271
    
1272
    /**
1273
     * prediction method (needed for huffyuv).
1274
     * - encoding: set by user
1275
     * - decoding: unused
1276
     */
1277
     int prediction_method;
1278
#define FF_PRED_LEFT   0
1279
#define FF_PRED_PLANE  1
1280
#define FF_PRED_MEDIAN 2
1281
    
1282
    /**
1283
     * sample aspect ratio (0 if unknown).
1284
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1285
     * - encoding: set by user.
1286
     * - decoding: set by lavc.
1287
     */
1288
    AVRational sample_aspect_ratio;
1289

    
1290
    /**
1291
     * the picture in the bitstream.
1292
     * - encoding: set by lavc
1293
     * - decoding: set by lavc
1294
     */
1295
    AVFrame *coded_frame;
1296

    
1297
    /**
1298
     * debug.
1299
     * - encoding: set by user.
1300
     * - decoding: set by user.
1301
     */
1302
    int debug;
1303
#define FF_DEBUG_PICT_INFO 1
1304
#define FF_DEBUG_RC        2
1305
#define FF_DEBUG_BITSTREAM 4
1306
#define FF_DEBUG_MB_TYPE   8
1307
#define FF_DEBUG_QP        16
1308
#define FF_DEBUG_MV        32
1309
#define FF_DEBUG_DCT_COEFF 0x00000040
1310
#define FF_DEBUG_SKIP      0x00000080
1311
#define FF_DEBUG_STARTCODE 0x00000100
1312
#define FF_DEBUG_PTS       0x00000200
1313
#define FF_DEBUG_ER        0x00000400
1314
#define FF_DEBUG_MMCO      0x00000800
1315
#define FF_DEBUG_BUGS      0x00001000
1316
#define FF_DEBUG_VIS_QP    0x00002000
1317
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1318
    
1319
    /**
1320
     * debug.
1321
     * - encoding: set by user.
1322
     * - decoding: set by user.
1323
     */
1324
    int debug_mv;
1325
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1326
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1327
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1328

    
1329
    /**
1330
     * error.
1331
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1332
     * - decoding: unused
1333
     */
1334
    uint64_t error[4];
1335
    
1336
    /**
1337
     * minimum MB quantizer.
1338
     * - encoding: unused
1339
     * - decoding: unused
1340
     */
1341
    int mb_qmin;
1342

    
1343
    /**
1344
     * maximum MB quantizer.
1345
     * - encoding: unused
1346
     * - decoding: unused
1347
     */
1348
    int mb_qmax;
1349
    
1350
    /**
1351
     * motion estimation compare function.
1352
     * - encoding: set by user.
1353
     * - decoding: unused
1354
     */
1355
    int me_cmp;
1356
    /**
1357
     * subpixel motion estimation compare function.
1358
     * - encoding: set by user.
1359
     * - decoding: unused
1360
     */
1361
    int me_sub_cmp;
1362
    /**
1363
     * macroblock compare function (not supported yet).
1364
     * - encoding: set by user.
1365
     * - decoding: unused
1366
     */
1367
    int mb_cmp;
1368
    /**
1369
     * interlaced dct compare function
1370
     * - encoding: set by user.
1371
     * - decoding: unused
1372
     */
1373
    int ildct_cmp;
1374
#define FF_CMP_SAD  0
1375
#define FF_CMP_SSE  1
1376
#define FF_CMP_SATD 2
1377
#define FF_CMP_DCT  3
1378
#define FF_CMP_PSNR 4
1379
#define FF_CMP_BIT  5
1380
#define FF_CMP_RD   6
1381
#define FF_CMP_ZERO 7
1382
#define FF_CMP_VSAD 8
1383
#define FF_CMP_VSSE 9
1384
#define FF_CMP_NSSE 10
1385
#define FF_CMP_W53  11
1386
#define FF_CMP_W97  12
1387
#define FF_CMP_DCTMAX 13
1388
#define FF_CMP_CHROMA 256
1389
    
1390
    /**
1391
     * ME diamond size & shape.
1392
     * - encoding: set by user.
1393
     * - decoding: unused
1394
     */
1395
    int dia_size;
1396

    
1397
    /**
1398
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1399
     * - encoding: set by user.
1400
     * - decoding: unused
1401
     */
1402
    int last_predictor_count;
1403

    
1404
    /**
1405
     * pre pass for motion estimation.
1406
     * - encoding: set by user.
1407
     * - decoding: unused
1408
     */
1409
    int pre_me;
1410

    
1411
    /**
1412
     * motion estimation pre pass compare function.
1413
     * - encoding: set by user.
1414
     * - decoding: unused
1415
     */
1416
    int me_pre_cmp;
1417

    
1418
    /**
1419
     * ME pre pass diamond size & shape.
1420
     * - encoding: set by user.
1421
     * - decoding: unused
1422
     */
1423
    int pre_dia_size;
1424

    
1425
    /**
1426
     * subpel ME quality.
1427
     * - encoding: set by user.
1428
     * - decoding: unused
1429
     */
1430
    int me_subpel_quality;
1431

    
1432
    /**
1433
     * callback to negotiate the pixelFormat.
1434
     * @param fmt is the list of formats which are supported by the codec,
1435
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1436
     * the first is allways the native one
1437
     * @return the choosen format
1438
     * - encoding: unused
1439
     * - decoding: set by user, if not set then the native format will always be choosen
1440
     */
1441
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1442

    
1443
    /**
1444
     * DTG active format information (additionnal aspect ratio
1445
     * information only used in DVB MPEG2 transport streams). 0 if
1446
     * not set.
1447
     * 
1448
     * - encoding: unused.
1449
     * - decoding: set by decoder 
1450
     */
1451
    int dtg_active_format;
1452
#define FF_DTG_AFD_SAME         8
1453
#define FF_DTG_AFD_4_3          9
1454
#define FF_DTG_AFD_16_9         10
1455
#define FF_DTG_AFD_14_9         11
1456
#define FF_DTG_AFD_4_3_SP_14_9  13
1457
#define FF_DTG_AFD_16_9_SP_14_9 14
1458
#define FF_DTG_AFD_SP_4_3       15
1459

    
1460
    /**
1461
     * Maximum motion estimation search range in subpel units.
1462
     * if 0 then no limit
1463
     * 
1464
     * - encoding: set by user.
1465
     * - decoding: unused.
1466
     */
1467
    int me_range;
1468

    
1469
    /**
1470
     * intra quantizer bias.
1471
     * - encoding: set by user.
1472
     * - decoding: unused
1473
     */
1474
    int intra_quant_bias;
1475
#define FF_DEFAULT_QUANT_BIAS 999999
1476
    
1477
    /**
1478
     * inter quantizer bias.
1479
     * - encoding: set by user.
1480
     * - decoding: unused
1481
     */
1482
    int inter_quant_bias;
1483

    
1484
    /**
1485
     * color table ID.
1486
     * - encoding: unused.
1487
     * - decoding: which clrtable should be used for 8bit RGB images
1488
     *             table have to be stored somewhere FIXME
1489
     */
1490
    int color_table_id;
1491
    
1492
    /**
1493
     * internal_buffer count. 
1494
     * Don't touch, used by lavc default_get_buffer()
1495
     */
1496
    int internal_buffer_count;
1497
    
1498
    /**
1499
     * internal_buffers. 
1500
     * Don't touch, used by lavc default_get_buffer()
1501
     */
1502
    void *internal_buffer;
1503

    
1504
#define FF_LAMBDA_SHIFT 7
1505
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1506
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1507
#define FF_LAMBDA_MAX (256*128-1)
1508

    
1509
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1510
    /**
1511
     * global quality for codecs which cannot change it per frame.
1512
     * this should be proportional to MPEG1/2/4 qscale.
1513
     * - encoding: set by user.
1514
     * - decoding: unused
1515
     */
1516
    int global_quality;
1517
    
1518
#define FF_CODER_TYPE_VLC   0
1519
#define FF_CODER_TYPE_AC    1
1520
    /**
1521
     * coder type
1522
     * - encoding: set by user.
1523
     * - decoding: unused
1524
     */
1525
    int coder_type;
1526

    
1527
    /**
1528
     * context model
1529
     * - encoding: set by user.
1530
     * - decoding: unused
1531
     */
1532
    int context_model;
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
} AVCodecContext;
1854

    
1855
/**
1856
 * AVCodec.
1857
 */
1858
typedef struct AVCodec {
1859
    const char *name;
1860
    enum CodecType type;
1861
    enum CodecID id;
1862
    int priv_data_size;
1863
    int (*init)(AVCodecContext *);
1864
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1865
    int (*close)(AVCodecContext *);
1866
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1867
                  uint8_t *buf, int buf_size);
1868
    int capabilities;
1869
#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
1870
    void *dummy; // FIXME remove next time we break binary compatibility
1871
#endif
1872
    struct AVCodec *next;
1873
    void (*flush)(AVCodecContext *);
1874
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1875
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1876
} AVCodec;
1877

    
1878
/**
1879
 * four components are given, that's all.
1880
 * the last component is alpha
1881
 */
1882
typedef struct AVPicture {
1883
    uint8_t *data[4];
1884
    int linesize[4];       ///< number of bytes per line
1885
} AVPicture;
1886

    
1887
/**
1888
 * AVPaletteControl
1889
 * This structure defines a method for communicating palette changes
1890
 * between and demuxer and a decoder.
1891
 */
1892
#define AVPALETTE_SIZE 1024
1893
#define AVPALETTE_COUNT 256
1894
typedef struct AVPaletteControl {
1895

    
1896
    /* demuxer sets this to 1 to indicate the palette has changed;
1897
     * decoder resets to 0 */
1898
    int palette_changed;
1899

    
1900
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1901
     * the individual palette components should be on a 8-bit scale; if
1902
     * the palette data comes from a IBM VGA native format, the component
1903
     * data is probably 6 bits in size and needs to be scaled */
1904
    unsigned int palette[AVPALETTE_COUNT];
1905

    
1906
} AVPaletteControl;
1907

    
1908
typedef struct AVSubtitleRect {
1909
    uint16_t x;
1910
    uint16_t y;
1911
    uint16_t w;
1912
    uint16_t h;
1913
    uint16_t nb_colors;
1914
    int linesize;
1915
    uint32_t *rgba_palette;
1916
    uint8_t *bitmap;
1917
} AVSubtitleRect;
1918

    
1919
typedef struct AVSubtitle {
1920
    uint16_t format; /* 0 = graphics */
1921
    uint32_t start_display_time; /* relative to packet pts, in ms */
1922
    uint32_t end_display_time; /* relative to packet pts, in ms */
1923
    uint32_t num_rects;
1924
    AVSubtitleRect *rects;
1925
} AVSubtitle;
1926

    
1927
extern AVCodec ac3_encoder;
1928
extern AVCodec mp2_encoder;
1929
extern AVCodec mp3lame_encoder;
1930
extern AVCodec oggvorbis_encoder;
1931
extern AVCodec oggtheora_encoder;
1932
extern AVCodec faac_encoder;
1933
extern AVCodec xvid_encoder;
1934
extern AVCodec mpeg1video_encoder;
1935
extern AVCodec mpeg2video_encoder;
1936
extern AVCodec h261_encoder;
1937
extern AVCodec h263_encoder;
1938
extern AVCodec h263p_encoder;
1939
extern AVCodec flv_encoder;
1940
extern AVCodec rv10_encoder;
1941
extern AVCodec rv20_encoder;
1942
extern AVCodec dvvideo_encoder;
1943
extern AVCodec mjpeg_encoder;
1944
extern AVCodec ljpeg_encoder;
1945
extern AVCodec png_encoder;
1946
extern AVCodec ppm_encoder;
1947
extern AVCodec pgm_encoder;
1948
extern AVCodec pgmyuv_encoder;
1949
extern AVCodec pbm_encoder;
1950
extern AVCodec pam_encoder;
1951
extern AVCodec mpeg4_encoder;
1952
extern AVCodec msmpeg4v1_encoder;
1953
extern AVCodec msmpeg4v2_encoder;
1954
extern AVCodec msmpeg4v3_encoder;
1955
extern AVCodec wmv1_encoder;
1956
extern AVCodec wmv2_encoder;
1957
extern AVCodec huffyuv_encoder;
1958
extern AVCodec ffvhuff_encoder;
1959
extern AVCodec h264_encoder;
1960
extern AVCodec asv1_encoder;
1961
extern AVCodec asv2_encoder;
1962
extern AVCodec vcr1_encoder;
1963
extern AVCodec ffv1_encoder;
1964
extern AVCodec snow_encoder;
1965
extern AVCodec mdec_encoder;
1966
extern AVCodec zlib_encoder;
1967
extern AVCodec sonic_encoder;
1968
extern AVCodec sonic_ls_encoder;
1969
extern AVCodec svq1_encoder;
1970
extern AVCodec x264_encoder;
1971

    
1972
extern AVCodec h263_decoder;
1973
extern AVCodec h261_decoder;
1974
extern AVCodec mpeg4_decoder;
1975
extern AVCodec msmpeg4v1_decoder;
1976
extern AVCodec msmpeg4v2_decoder;
1977
extern AVCodec msmpeg4v3_decoder;
1978
extern AVCodec wmv1_decoder;
1979
extern AVCodec wmv2_decoder;
1980
extern AVCodec vc9_decoder;
1981
extern AVCodec wmv3_decoder;
1982
extern AVCodec mpeg1video_decoder;
1983
extern AVCodec mpeg2video_decoder;
1984
extern AVCodec mpegvideo_decoder;
1985
extern AVCodec mpeg_xvmc_decoder;
1986
extern AVCodec h263i_decoder;
1987
extern AVCodec flv_decoder;
1988
extern AVCodec rv10_decoder;
1989
extern AVCodec rv20_decoder;
1990
extern AVCodec rv30_decoder;
1991
extern AVCodec rv40_decoder;
1992
extern AVCodec svq1_decoder;
1993
extern AVCodec svq3_decoder;
1994
extern AVCodec dvvideo_decoder;
1995
extern AVCodec wmav1_decoder;
1996
extern AVCodec wmav2_decoder;
1997
extern AVCodec mjpeg_decoder;
1998
extern AVCodec mjpegb_decoder;
1999
extern AVCodec sp5x_decoder;
2000
extern AVCodec png_decoder;
2001
extern AVCodec mp2_decoder;
2002
extern AVCodec mp3_decoder;
2003
extern AVCodec mp3adu_decoder;
2004
extern AVCodec mp3on4_decoder;
2005
extern AVCodec qdm2_decoder;
2006
extern AVCodec mace3_decoder;
2007
extern AVCodec mace6_decoder;
2008
extern AVCodec huffyuv_decoder;
2009
extern AVCodec ffvhuff_decoder;
2010
extern AVCodec oggvorbis_decoder;
2011
extern AVCodec oggtheora_decoder;
2012
extern AVCodec cyuv_decoder;
2013
extern AVCodec h264_decoder;
2014
extern AVCodec indeo3_decoder;
2015
extern AVCodec vp3_decoder;
2016
extern AVCodec theora_decoder;
2017
extern AVCodec amr_nb_decoder;
2018
extern AVCodec amr_nb_encoder;
2019
extern AVCodec amr_wb_encoder;
2020
extern AVCodec amr_wb_decoder;
2021
extern AVCodec aac_decoder;
2022
extern AVCodec mpeg4aac_decoder;
2023
extern AVCodec asv1_decoder;
2024
extern AVCodec asv2_decoder;
2025
extern AVCodec vcr1_decoder;
2026
extern AVCodec cljr_decoder;
2027
extern AVCodec ffv1_decoder;
2028
extern AVCodec snow_decoder;
2029
extern AVCodec fourxm_decoder;
2030
extern AVCodec mdec_decoder;
2031
extern AVCodec roq_decoder;
2032
extern AVCodec interplay_video_decoder;
2033
extern AVCodec xan_wc3_decoder;
2034
extern AVCodec rpza_decoder;
2035
extern AVCodec cinepak_decoder;
2036
extern AVCodec msrle_decoder;
2037
extern AVCodec msvideo1_decoder;
2038
extern AVCodec vqa_decoder;
2039
extern AVCodec idcin_decoder;
2040
extern AVCodec eightbps_decoder;
2041
extern AVCodec smc_decoder;
2042
extern AVCodec flic_decoder;
2043
extern AVCodec vmdvideo_decoder;
2044
extern AVCodec vmdaudio_decoder;
2045
extern AVCodec truemotion1_decoder;
2046
extern AVCodec truemotion2_decoder;
2047
extern AVCodec mszh_decoder;
2048
extern AVCodec zlib_decoder;
2049
extern AVCodec ra_144_decoder;
2050
extern AVCodec ra_288_decoder;
2051
extern AVCodec roq_dpcm_decoder;
2052
extern AVCodec interplay_dpcm_decoder;
2053
extern AVCodec xan_dpcm_decoder;
2054
extern AVCodec sol_dpcm_decoder;
2055
extern AVCodec sonic_decoder;
2056
extern AVCodec qtrle_decoder;
2057
extern AVCodec flac_decoder;
2058
extern AVCodec tscc_decoder;
2059
extern AVCodec ulti_decoder;
2060
extern AVCodec qdraw_decoder;
2061
extern AVCodec xl_decoder;
2062
extern AVCodec qpeg_decoder;
2063
extern AVCodec shorten_decoder;
2064
extern AVCodec loco_decoder;
2065
extern AVCodec wnv1_decoder;
2066
extern AVCodec aasc_decoder;
2067
extern AVCodec alac_decoder;
2068
extern AVCodec ws_snd1_decoder;
2069
extern AVCodec indeo2_decoder;
2070
extern AVCodec vorbis_decoder;
2071
extern AVCodec fraps_decoder;
2072
extern AVCodec libgsm_encoder;
2073
extern AVCodec libgsm_decoder;
2074

    
2075
/* pcm codecs */
2076
#define PCM_CODEC(id, name) \
2077
extern AVCodec name ## _decoder; \
2078
extern AVCodec name ## _encoder
2079

    
2080
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2081
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2082
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2083
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2084
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2085
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2086
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2087
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2088
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2089
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2090
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2091
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2092
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2093
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2094
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2095
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2096
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2097

    
2098
/* adpcm codecs */
2099

    
2100
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2101
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2102
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2103
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2104
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2105
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2106
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2107
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2108
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2109
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2110
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2111
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2112
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2113
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2114
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2115

    
2116
#undef PCM_CODEC
2117

    
2118
/* dummy raw video codec */
2119
extern AVCodec rawvideo_encoder;
2120
extern AVCodec rawvideo_decoder;
2121

    
2122
/* the following codecs use external GPL libs */
2123
extern AVCodec ac3_decoder;
2124
extern AVCodec dts_decoder;
2125

    
2126
/* subtitles */
2127
extern AVCodec dvdsub_encoder;
2128
extern AVCodec dvdsub_decoder;
2129
extern AVCodec dvbsub_encoder;
2130
extern AVCodec dvbsub_decoder;
2131

    
2132
/* resample.c */
2133

    
2134
struct ReSampleContext;
2135
struct AVResampleContext;
2136

    
2137
typedef struct ReSampleContext ReSampleContext;
2138

    
2139
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
2140
                                     int output_rate, int input_rate);
2141
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2142
void audio_resample_close(ReSampleContext *s);
2143

    
2144
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2145
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2146
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2147
void av_resample_close(struct AVResampleContext *c);
2148

    
2149
/* YUV420 format is assumed ! */
2150

    
2151
struct ImgReSampleContext;
2152

    
2153
typedef struct ImgReSampleContext ImgReSampleContext;
2154

    
2155
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2156
                                      int input_width, int input_height);
2157

    
2158
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2159
                                      int iwidth, int iheight,
2160
                                      int topBand, int bottomBand,
2161
                                      int leftBand, int rightBand,
2162
                                      int padtop, int padbottom,
2163
                                      int padleft, int padright);
2164

    
2165

    
2166
void img_resample(ImgReSampleContext *s, 
2167
                  AVPicture *output, const AVPicture *input);
2168

    
2169
void img_resample_close(ImgReSampleContext *s);
2170

    
2171
/**
2172
 * Allocate memory for a picture.  Call avpicture_free to free it.
2173
 *
2174
 * @param picture the picture to be filled in.
2175
 * @param pix_fmt the format of the picture.
2176
 * @param width the width of the picture.
2177
 * @param height the height of the picture.
2178
 * @return 0 if successful, -1 if not.
2179
 */
2180
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2181

    
2182
/* Free a picture previously allocated by avpicture_alloc. */
2183
void avpicture_free(AVPicture *picture);
2184

    
2185
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2186
                   int pix_fmt, int width, int height);
2187
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2188
                     unsigned char *dest, int dest_size);
2189
int avpicture_get_size(int pix_fmt, int width, int height);
2190
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2191
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2192
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2193
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2194
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2195

    
2196
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2197
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2198
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2199
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2200
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2201
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2202

    
2203
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2204
                             int has_alpha);
2205
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2206
                              int has_alpha, int *loss_ptr);
2207

    
2208
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2209
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2210
int img_get_alpha_info(const AVPicture *src,
2211
                       int pix_fmt, int width, int height);
2212

    
2213
/* convert among pixel formats */
2214
int img_convert(AVPicture *dst, int dst_pix_fmt,
2215
                const AVPicture *src, int pix_fmt, 
2216
                int width, int height);
2217

    
2218
/* deinterlace a picture */
2219
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2220
                          int pix_fmt, int width, int height);
2221

    
2222
/* external high level API */
2223

    
2224
extern AVCodec *first_avcodec;
2225

    
2226
/* returns LIBAVCODEC_VERSION_INT constant */
2227
unsigned avcodec_version(void);
2228
/* returns LIBAVCODEC_BUILD constant */
2229
unsigned avcodec_build(void);
2230
void avcodec_init(void);
2231

    
2232
void register_avcodec(AVCodec *format);
2233
AVCodec *avcodec_find_encoder(enum CodecID id);
2234
AVCodec *avcodec_find_encoder_by_name(const char *name);
2235
AVCodec *avcodec_find_decoder(enum CodecID id);
2236
AVCodec *avcodec_find_decoder_by_name(const char *name);
2237
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2238

    
2239
void avcodec_get_context_defaults(AVCodecContext *s);
2240
AVCodecContext *avcodec_alloc_context(void);
2241
void avcodec_get_frame_defaults(AVFrame *pic);
2242
AVFrame *avcodec_alloc_frame(void);
2243

    
2244
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2245
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2246
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2247
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2248
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2249
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2250

    
2251
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2252
void avcodec_thread_free(AVCodecContext *s);
2253
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2254
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2255
//FIXME func typedef
2256

    
2257
/**
2258
 * opens / inits the AVCodecContext.
2259
 * not thread save!
2260
 */
2261
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2262

    
2263
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
2264
                         int *frame_size_ptr,
2265
                         uint8_t *buf, int buf_size);
2266
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
2267
                         int *got_picture_ptr,
2268
                         uint8_t *buf, int buf_size);
2269
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2270
                            int *got_sub_ptr,
2271
                            const uint8_t *buf, int buf_size);
2272
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
2273
                        int *data_size_ptr,
2274
                        uint8_t *buf, int buf_size);
2275
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2276
                         const short *samples);
2277
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2278
                         const AVFrame *pict);
2279
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
2280
                            const AVSubtitle *sub);
2281

    
2282
int avcodec_close(AVCodecContext *avctx);
2283

    
2284
void avcodec_register_all(void);
2285

    
2286
void avcodec_flush_buffers(AVCodecContext *avctx);
2287

    
2288
void avcodec_default_free_buffers(AVCodecContext *s);
2289

    
2290
/* misc usefull functions */
2291

    
2292
/**
2293
 * returns a single letter to describe the picture type
2294
 */
2295
char av_get_pict_type_char(int pict_type);
2296

    
2297

    
2298
/* frame parsing */
2299
typedef struct AVCodecParserContext {
2300
    void *priv_data;
2301
    struct AVCodecParser *parser;
2302
    int64_t frame_offset; /* offset of the current frame */
2303
    int64_t cur_offset; /* current offset 
2304
                           (incremented by each av_parser_parse()) */
2305
    int64_t last_frame_offset; /* offset of the last frame */
2306
    /* video info */
2307
    int pict_type; /* XXX: put it back in AVCodecContext */
2308
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2309
    int64_t pts;     /* pts of the current frame */
2310
    int64_t dts;     /* dts of the current frame */
2311

    
2312
    /* private data */
2313
    int64_t last_pts;
2314
    int64_t last_dts;
2315
    int fetch_timestamp;
2316

    
2317
#define AV_PARSER_PTS_NB 4
2318
    int cur_frame_start_index;
2319
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2320
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2321
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2322
    
2323
    int flags;
2324
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2325
} AVCodecParserContext;
2326

    
2327
typedef struct AVCodecParser {
2328
    int codec_ids[5]; /* several codec IDs are permitted */
2329
    int priv_data_size;
2330
    int (*parser_init)(AVCodecParserContext *s);
2331
    int (*parser_parse)(AVCodecParserContext *s, 
2332
                        AVCodecContext *avctx,
2333
                        uint8_t **poutbuf, int *poutbuf_size, 
2334
                        const uint8_t *buf, int buf_size);
2335
    void (*parser_close)(AVCodecParserContext *s);
2336
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2337
    struct AVCodecParser *next;
2338
} AVCodecParser;
2339

    
2340
extern AVCodecParser *av_first_parser;
2341

    
2342
void av_register_codec_parser(AVCodecParser *parser);
2343
AVCodecParserContext *av_parser_init(int codec_id);
2344
int av_parser_parse(AVCodecParserContext *s, 
2345
                    AVCodecContext *avctx,
2346
                    uint8_t **poutbuf, int *poutbuf_size, 
2347
                    const uint8_t *buf, int buf_size,
2348
                    int64_t pts, int64_t dts);
2349
int av_parser_change(AVCodecParserContext *s,
2350
                     AVCodecContext *avctx,
2351
                     uint8_t **poutbuf, int *poutbuf_size, 
2352
                     const uint8_t *buf, int buf_size, int keyframe);
2353
void av_parser_close(AVCodecParserContext *s);
2354

    
2355
extern AVCodecParser mpegvideo_parser;
2356
extern AVCodecParser mpeg4video_parser;
2357
extern AVCodecParser h261_parser;
2358
extern AVCodecParser h263_parser;
2359
extern AVCodecParser h264_parser;
2360
extern AVCodecParser mjpeg_parser;
2361
extern AVCodecParser pnm_parser;
2362
extern AVCodecParser mpegaudio_parser;
2363
extern AVCodecParser ac3_parser;
2364
extern AVCodecParser dvdsub_parser;
2365
extern AVCodecParser dvbsub_parser;
2366

    
2367
/* memory */
2368
void *av_malloc(unsigned int size);
2369
void *av_mallocz(unsigned int size);
2370
void *av_realloc(void *ptr, unsigned int size);
2371
void av_free(void *ptr);
2372
char *av_strdup(const char *s);
2373
void av_freep(void *ptr);
2374
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2375
/* for static data only */
2376
/* call av_free_static to release all staticaly allocated tables */
2377
void av_free_static(void);
2378
void *av_mallocz_static(unsigned int size);
2379
void *av_realloc_static(void *ptr, unsigned int size);
2380

    
2381
/* add by bero : in adx.c */
2382
int is_adx(const unsigned char *buf,size_t bufsize);
2383

    
2384
void img_copy(AVPicture *dst, const AVPicture *src,
2385
              int pix_fmt, int width, int height);
2386

    
2387
/* av_log API */
2388

    
2389
#include <stdarg.h>
2390

    
2391
#define AV_LOG_QUIET -1
2392
#define AV_LOG_ERROR 0
2393
#define AV_LOG_INFO 1
2394
#define AV_LOG_DEBUG 2
2395

    
2396
#ifdef __GNUC__
2397
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2398
#else
2399
extern void av_log(void*, int level, const char *fmt, ...);
2400
#endif
2401

    
2402
extern void av_vlog(void*, int level, const char *fmt, va_list);
2403
extern int av_log_get_level(void);
2404
extern void av_log_set_level(int);
2405
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2406

    
2407
/* endian macros */
2408
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2409
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2410
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2411
                   (((uint8_t*)(x))[1] << 16) | \
2412
                   (((uint8_t*)(x))[2] << 8) | \
2413
                    ((uint8_t*)(x))[3])
2414
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2415
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2416
                   (((uint8_t*)(x))[2] << 16) | \
2417
                   (((uint8_t*)(x))[1] << 8) | \
2418
                    ((uint8_t*)(x))[0])
2419
#endif
2420

    
2421
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2422

    
2423
#ifdef __cplusplus
2424
}
2425
#endif
2426

    
2427
#endif /* AVCODEC_H */