Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ 39a64e30

History | View | Annotate | Download (75.2 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  ((51<<16)+(1<<8)+0)
25
#define LIBAVCODEC_VERSION      51.1.0
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_JPEGLS,
48
    CODEC_ID_MPEG4,
49
    CODEC_ID_RAWVIDEO,
50
    CODEC_ID_MSMPEG4V1,
51
    CODEC_ID_MSMPEG4V2,
52
    CODEC_ID_MSMPEG4V3,
53
    CODEC_ID_WMV1,
54
    CODEC_ID_WMV2,
55
    CODEC_ID_H263P,
56
    CODEC_ID_H263I,
57
    CODEC_ID_FLV1,
58
    CODEC_ID_SVQ1,
59
    CODEC_ID_SVQ3,
60
    CODEC_ID_DVVIDEO,
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_ASV1,
68
    CODEC_ID_ASV2,
69
    CODEC_ID_FFV1,
70
    CODEC_ID_4XM,
71
    CODEC_ID_VCR1,
72
    CODEC_ID_CLJR,
73
    CODEC_ID_MDEC,
74
    CODEC_ID_ROQ,
75
    CODEC_ID_INTERPLAY_VIDEO,
76
    CODEC_ID_XAN_WC3,
77
    CODEC_ID_XAN_WC4,
78
    CODEC_ID_RPZA,
79
    CODEC_ID_CINEPAK,
80
    CODEC_ID_WS_VQA,
81
    CODEC_ID_MSRLE,
82
    CODEC_ID_MSVIDEO1,
83
    CODEC_ID_IDCIN,
84
    CODEC_ID_8BPS,
85
    CODEC_ID_SMC,
86
    CODEC_ID_FLIC,
87
    CODEC_ID_TRUEMOTION1,
88
    CODEC_ID_VMDVIDEO,
89
    CODEC_ID_MSZH,
90
    CODEC_ID_ZLIB,
91
    CODEC_ID_QTRLE,
92
    CODEC_ID_SNOW,
93
    CODEC_ID_TSCC,
94
    CODEC_ID_ULTI,
95
    CODEC_ID_QDRAW,
96
    CODEC_ID_VIXL,
97
    CODEC_ID_QPEG,
98
    CODEC_ID_XVID,
99
    CODEC_ID_PNG,
100
    CODEC_ID_PPM,
101
    CODEC_ID_PBM,
102
    CODEC_ID_PGM,
103
    CODEC_ID_PGMYUV,
104
    CODEC_ID_PAM,
105
    CODEC_ID_FFVHUFF,
106
    CODEC_ID_RV30,
107
    CODEC_ID_RV40,
108
    CODEC_ID_VC9,
109
    CODEC_ID_WMV3,
110
    CODEC_ID_LOCO,
111
    CODEC_ID_WNV1,
112
    CODEC_ID_AASC,
113
    CODEC_ID_INDEO2,
114
    CODEC_ID_FRAPS,
115
    CODEC_ID_TRUEMOTION2,
116
    CODEC_ID_BMP,
117
    CODEC_ID_CSCD,
118

    
119
    /* various pcm "codecs" */
120
    CODEC_ID_PCM_S16LE= 0x10000,
121
    CODEC_ID_PCM_S16BE,
122
    CODEC_ID_PCM_U16LE,
123
    CODEC_ID_PCM_U16BE,
124
    CODEC_ID_PCM_S8,
125
    CODEC_ID_PCM_U8,
126
    CODEC_ID_PCM_MULAW,
127
    CODEC_ID_PCM_ALAW,
128
    CODEC_ID_PCM_S32LE,
129
    CODEC_ID_PCM_S32BE,
130
    CODEC_ID_PCM_U32LE,
131
    CODEC_ID_PCM_U32BE,
132
    CODEC_ID_PCM_S24LE,
133
    CODEC_ID_PCM_S24BE,
134
    CODEC_ID_PCM_U24LE,
135
    CODEC_ID_PCM_U24BE,
136
    CODEC_ID_PCM_S24DAUD,
137

    
138
    /* various adpcm codecs */
139
    CODEC_ID_ADPCM_IMA_QT= 0x11000,
140
    CODEC_ID_ADPCM_IMA_WAV,
141
    CODEC_ID_ADPCM_IMA_DK3,
142
    CODEC_ID_ADPCM_IMA_DK4,
143
    CODEC_ID_ADPCM_IMA_WS,
144
    CODEC_ID_ADPCM_IMA_SMJPEG,
145
    CODEC_ID_ADPCM_MS,
146
    CODEC_ID_ADPCM_4XM,
147
    CODEC_ID_ADPCM_XA,
148
    CODEC_ID_ADPCM_ADX,
149
    CODEC_ID_ADPCM_EA,
150
    CODEC_ID_ADPCM_G726,
151
    CODEC_ID_ADPCM_CT,
152
    CODEC_ID_ADPCM_SWF,
153
    CODEC_ID_ADPCM_YAMAHA,
154

    
155
    /* AMR */
156
    CODEC_ID_AMR_NB= 0x12000,
157
    CODEC_ID_AMR_WB,
158

    
159
    /* RealAudio codecs*/
160
    CODEC_ID_RA_144= 0x13000,
161
    CODEC_ID_RA_288,
162

    
163
    /* various DPCM codecs */
164
    CODEC_ID_ROQ_DPCM= 0x14000,
165
    CODEC_ID_INTERPLAY_DPCM,
166
    CODEC_ID_XAN_DPCM,
167
    CODEC_ID_SOL_DPCM,
168

    
169
    CODEC_ID_MP2= 0x15000,
170
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
171
    CODEC_ID_AAC,
172
    CODEC_ID_MPEG4AAC,
173
    CODEC_ID_AC3,
174
    CODEC_ID_DTS,
175
    CODEC_ID_VORBIS,
176
    CODEC_ID_DVAUDIO,
177
    CODEC_ID_WMAV1,
178
    CODEC_ID_WMAV2,
179
    CODEC_ID_MACE3,
180
    CODEC_ID_MACE6,
181
    CODEC_ID_VMDAUDIO,
182
    CODEC_ID_SONIC,
183
    CODEC_ID_SONIC_LS,
184
    CODEC_ID_FLAC,
185
    CODEC_ID_MP3ADU,
186
    CODEC_ID_MP3ON4,
187
    CODEC_ID_SHORTEN,
188
    CODEC_ID_ALAC,
189
    CODEC_ID_WESTWOOD_SND1,
190
    CODEC_ID_GSM,
191
    CODEC_ID_QDM2,
192
    CODEC_ID_COOK,
193
    CODEC_ID_TRUESPEECH,
194

    
195
    CODEC_ID_OGGTHEORA= 0x16000,
196

    
197
    /* subtitle codecs */
198
    CODEC_ID_DVD_SUBTITLE= 0x17000,
199
    CODEC_ID_DVB_SUBTITLE,
200

    
201
    CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
202
                         stream (only used by libavformat) */
203
};
204

    
205
/* CODEC_ID_MP3LAME is absolete */
206
#define CODEC_ID_MP3LAME CODEC_ID_MP3
207

    
208
enum CodecType {
209
    CODEC_TYPE_UNKNOWN = -1,
210
    CODEC_TYPE_VIDEO,
211
    CODEC_TYPE_AUDIO,
212
    CODEC_TYPE_DATA,
213
    CODEC_TYPE_SUBTITLE,
214
};
215

    
216
/**
217
 * Pixel format. Notes:
218
 *
219
 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
220
 * color is put together as:
221
 *  (A << 24) | (R << 16) | (G << 8) | B
222
 * This is stored as BGRA on little endian CPU architectures and ARGB on
223
 * big endian CPUs.
224
 *
225
 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
226
 * image data is stored in AVFrame.data[0]. The palette is transported in
227
 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
228
 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
229
 * also endian-specific). Note also that the individual RGB palette
230
 * components stored in AVFrame.data[1] should be in the range 0..255.
231
 * This is important as many custom PAL8 video codecs that were designed
232
 * to run on the IBM VGA graphics adapter use 6-bit palette components.
233
 */
234
enum PixelFormat {
235
    PIX_FMT_NONE= -1,
236
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
237
    PIX_FMT_YUV422,    ///< Packed pixel, Y0 Cb Y1 Cr
238
    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
239
    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
240
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
241
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
242
    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
243
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
244
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
245
    PIX_FMT_RGB565,    ///< always stored in cpu endianness
246
    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1
247
    PIX_FMT_GRAY8,
248
    PIX_FMT_MONOWHITE, ///< 0 is white
249
    PIX_FMT_MONOBLACK, ///< 0 is black
250
    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette
251
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
252
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
253
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
254
    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
255
    PIX_FMT_XVMC_MPEG2_IDCT,
256
    PIX_FMT_UYVY422,   ///< Packed pixel, Cb Y0 Cr Y1
257
    PIX_FMT_UYVY411,   ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
258
    PIX_FMT_NB,
259
};
260

    
261
/* currently unused, may be used if 24/32 bits samples ever supported */
262
enum SampleFormat {
263
    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits
264
    SAMPLE_FMT_S32,             ///< signed 32 bits
265
    SAMPLE_FMT_FLT,             ///< float
266
    SAMPLE_FMT_DBL,             ///< double
267
};
268

    
269
/* in bytes */
270
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
271

    
272
/**
273
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
274
 * this is mainly needed because some optimized bitstream readers read
275
 * 32 or 64 bit at once and could read over the end<br>
276
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
277
 * MPEG bitstreams could cause overread and segfault
278
 */
279
#define FF_INPUT_BUFFER_PADDING_SIZE 8
280

    
281
/**
282
 * minimum encoding buffer size.
283
 * used to avoid some checks during header writing
284
 */
285
#define FF_MIN_BUFFER_SIZE 16384
286

    
287
/* motion estimation type, EPZS by default */
288
enum Motion_Est_ID {
289
    ME_ZERO = 1,
290
    ME_FULL,
291
    ME_LOG,
292
    ME_PHODS,
293
    ME_EPZS,
294
    ME_X1,
295
    ME_HEX,
296
    ME_UMH,
297
    ME_ITER,
298
};
299

    
300
enum AVDiscard{
301
//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
302
    AVDISCARD_NONE   =-16, ///< discard nothing
303
    AVDISCARD_DEFAULT=  0, ///< discard useless packets like 0 size packets in avi
304
    AVDISCARD_NONREF =  8, ///< discard all non reference
305
    AVDISCARD_BIDIR  = 16, ///< discard all bidirectional frames
306
    AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
307
    AVDISCARD_ALL    = 48, ///< discard all
308
};
309

    
310
typedef struct RcOverride{
311
    int start_frame;
312
    int end_frame;
313
    int qscale; // if this is 0 then quality_factor will be used instead
314
    float quality_factor;
315
} RcOverride;
316

    
317
/* only for ME compatiblity with old apps */
318
extern int motion_estimation_method;
319

    
320
#define FF_MAX_B_FRAMES 8
321

    
322
/* encoding support
323
   these flags can be passed in AVCodecContext.flags before initing
324
   Note: not everything is supported yet.
325
*/
326

    
327
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale
328
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
329
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC
330
#define CODEC_FLAG_GMC    0x0020  ///< use GMC
331
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0>
332
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning
333
/* parent program gurantees that the input for b-frame containing streams is not written to
334
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
335
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
336
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode
337
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode
338
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
339
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale
340
#define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
341
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding
342
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead
343
                                            of only at frame boundaries */
344
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization
345
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
346
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
347
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan
348
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization
349
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe
350
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct)
351
/* Fx : Flag for h263+ extra options */
352
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
353
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
354
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector
355
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
356
#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
357
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
358
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
359
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
360
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
361
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
362
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
363
#define CODEC_FLAG_CLOSED_GOP     0x80000000
364
#define CODEC_FLAG2_FAST          0x00000001 ///< allow non spec compliant speedup tricks
365
#define CODEC_FLAG2_STRICT_GOP    0x00000002 ///< strictly enforce GOP size
366
#define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< skip bitstream encoding
367
#define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< place global headers at every keyframe instead of in extradata
368
#define CODEC_FLAG2_BPYRAMID      0x00000010 ///< H.264 allow b-frames to be used as references
369
#define CODEC_FLAG2_WPRED         0x00000020 ///< H.264 weighted biprediction for b-frames
370
#define CODEC_FLAG2_MIXED_REFS    0x00000040 ///< H.264 multiple references per partition
371
#define CODEC_FLAG2_8X8DCT        0x00000080 ///< H.264 high profile 8x8 transform
372
#define CODEC_FLAG2_FASTPSKIP     0x00000100 ///< H.264 fast pskip
373
#define CODEC_FLAG2_AUD           0x00000200 ///< H.264 access unit delimiters
374
#define CODEC_FLAG2_BRDO          0x00000400 ///< b-frame rate-distortion optimization
375

    
376
/* Unsupported options :
377
 *              Syntax Arithmetic coding (SAC)
378
 *              Reference Picture Selection
379
 *              Independant Segment Decoding */
380
/* /Fx */
381
/* codec capabilities */
382

    
383
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
384
/**
385
 * Codec uses get_buffer() for allocating buffers.
386
 * direct rendering method 1
387
 */
388
#define CODEC_CAP_DR1             0x0002
389
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
390
   used */
391
#define CODEC_CAP_PARSE_ONLY      0x0004
392
#define CODEC_CAP_TRUNCATED       0x0008
393
/* codec can export data for HW decoding (XvMC) */
394
#define CODEC_CAP_HWACCEL         0x0010
395
/**
396
 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
397
 * if this is not set, the codec is guranteed to never be feeded with NULL data
398
 */
399
#define CODEC_CAP_DELAY           0x0020
400

    
401
//the following defines may change, don't expect compatibility if you use them
402
#define MB_TYPE_INTRA4x4   0x0001
403
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
404
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
405
#define MB_TYPE_16x16      0x0008
406
#define MB_TYPE_16x8       0x0010
407
#define MB_TYPE_8x16       0x0020
408
#define MB_TYPE_8x8        0x0040
409
#define MB_TYPE_INTERLACED 0x0080
410
#define MB_TYPE_DIRECT2     0x0100 //FIXME
411
#define MB_TYPE_ACPRED     0x0200
412
#define MB_TYPE_GMC        0x0400
413
#define MB_TYPE_SKIP       0x0800
414
#define MB_TYPE_P0L0       0x1000
415
#define MB_TYPE_P1L0       0x2000
416
#define MB_TYPE_P0L1       0x4000
417
#define MB_TYPE_P1L1       0x8000
418
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
419
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
420
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
421
#define MB_TYPE_QUANT      0x00010000
422
#define MB_TYPE_CBP        0x00020000
423
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
424

    
425
/**
426
 * Pan Scan area.
427
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
428
 */
429
typedef struct AVPanScan{
430
    /**
431
     * id.
432
     * - encoding: set by user.
433
     * - decoding: set by lavc
434
     */
435
    int id;
436

    
437
    /**
438
     * width and height in 1/16 pel
439
     * - encoding: set by user.
440
     * - decoding: set by lavc
441
     */
442
    int width;
443
    int height;
444

    
445
    /**
446
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
447
     * - encoding: set by user.
448
     * - decoding: set by lavc
449
     */
450
    int16_t position[3][2];
451
}AVPanScan;
452

    
453
#define FF_COMMON_FRAME \
454
    /**\
455
     * pointer to the picture planes.\
456
     * this might be different from the first allocated byte\
457
     * - encoding: \
458
     * - decoding: \
459
     */\
460
    uint8_t *data[4];\
461
    int linesize[4];\
462
    /**\
463
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
464
     * this isn't used by lavc unless the default get/release_buffer() is used\
465
     * - encoding: \
466
     * - decoding: \
467
     */\
468
    uint8_t *base[4];\
469
    /**\
470
     * 1 -> keyframe, 0-> not\
471
     * - encoding: set by lavc\
472
     * - decoding: set by lavc\
473
     */\
474
    int key_frame;\
475
\
476
    /**\
477
     * picture type of the frame, see ?_TYPE below.\
478
     * - encoding: set by lavc for coded_picture (and set by user for input)\
479
     * - decoding: set by lavc\
480
     */\
481
    int pict_type;\
482
\
483
    /**\
484
     * presentation timestamp in time_base units (time when frame should be shown to user)\
485
     * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
486
     * - encoding: MUST be set by user\
487
     * - decoding: set by lavc\
488
     */\
489
    int64_t pts;\
490
\
491
    /**\
492
     * picture number in bitstream order.\
493
     * - encoding: set by\
494
     * - decoding: set by lavc\
495
     */\
496
    int coded_picture_number;\
497
    /**\
498
     * picture number in display order.\
499
     * - encoding: set by\
500
     * - decoding: set by lavc\
501
     */\
502
    int display_picture_number;\
503
\
504
    /**\
505
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
506
     * - encoding: set by lavc for coded_picture (and set by user for input)\
507
     * - decoding: set by lavc\
508
     */\
509
    int quality; \
510
\
511
    /**\
512
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
513
     * set to INT_MAX if the buffer has not been used yet \
514
     * - encoding: unused\
515
     * - decoding: MUST be set by get_buffer()\
516
     */\
517
    int age;\
518
\
519
    /**\
520
     * is this picture used as reference\
521
     * - encoding: unused\
522
     * - decoding: set by lavc (before get_buffer() call))\
523
     */\
524
    int reference;\
525
\
526
    /**\
527
     * QP table\
528
     * - encoding: unused\
529
     * - decoding: set by lavc\
530
     */\
531
    int8_t *qscale_table;\
532
    /**\
533
     * QP store stride\
534
     * - encoding: unused\
535
     * - decoding: set by lavc\
536
     */\
537
    int qstride;\
538
\
539
    /**\
540
     * mbskip_table[mb]>=1 if MB didnt change\
541
     * stride= mb_width = (width+15)>>4\
542
     * - encoding: unused\
543
     * - decoding: set by lavc\
544
     */\
545
    uint8_t *mbskip_table;\
546
\
547
    /**\
548
     * Motion vector table.\
549
     * @code\
550
     * example:\
551
     * int mv_sample_log2= 4 - motion_subsample_log2;\
552
     * int mb_width= (width+15)>>4;\
553
     * int mv_stride= (mb_width << mv_sample_log2) + 1;\
554
     * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
555
     * @endcode\
556
     * - encoding: set by user\
557
     * - decoding: set by lavc\
558
     */\
559
    int16_t (*motion_val[2])[2];\
560
\
561
    /**\
562
     * Macroblock type table\
563
     * mb_type_base + mb_width + 2\
564
     * - encoding: set by user\
565
     * - decoding: set by lavc\
566
     */\
567
    uint32_t *mb_type;\
568
\
569
    /**\
570
     * log2 of the size of the block which a single vector in motion_val represents: \
571
     * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
572
     * - encoding: unused\
573
     * - decoding: set by lavc\
574
     */\
575
    uint8_t motion_subsample_log2;\
576
\
577
    /**\
578
     * for some private data of the user\
579
     * - encoding: unused\
580
     * - decoding: set by user\
581
     */\
582
    void *opaque;\
583
\
584
    /**\
585
     * error\
586
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
587
     * - decoding: unused\
588
     */\
589
    uint64_t error[4];\
590
\
591
    /**\
592
     * type of the buffer (to keep track of who has to dealloc data[*])\
593
     * - encoding: set by the one who allocs it\
594
     * - decoding: set by the one who allocs it\
595
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
596
     */\
597
    int type;\
598
    \
599
    /**\
600
     * when decoding, this signal how much the picture must be delayed.\
601
     * extra_delay = repeat_pict / (2*fps)\
602
     * - encoding: unused\
603
     * - decoding: set by lavc\
604
     */\
605
    int repeat_pict;\
606
    \
607
    /**\
608
     * \
609
     */\
610
    int qscale_type;\
611
    \
612
    /**\
613
     * The content of the picture is interlaced.\
614
     * - encoding: set by user\
615
     * - decoding: set by lavc (default 0)\
616
     */\
617
    int interlaced_frame;\
618
    \
619
    /**\
620
     * if the content is interlaced, is top field displayed first.\
621
     * - encoding: set by user\
622
     * - decoding: set by lavc\
623
     */\
624
    int top_field_first;\
625
    \
626
    /**\
627
     * Pan scan.\
628
     * - encoding: set by user\
629
     * - decoding: set by lavc\
630
     */\
631
    AVPanScan *pan_scan;\
632
    \
633
    /**\
634
     * tell user application that palette has changed from previous frame.\
635
     * - encoding: ??? (no palette-enabled encoder yet)\
636
     * - decoding: set by lavc (default 0)\
637
     */\
638
    int palette_has_changed;\
639
    \
640
    /**\
641
     * Codec suggestion on buffer type if != 0\
642
     * - encoding: unused\
643
     * - decoding: set by lavc (before get_buffer() call))\
644
     */\
645
    int buffer_hints;\
646
\
647
    /**\
648
     * DCT coeffitients\
649
     * - encoding: unused\
650
     * - decoding: set by lavc\
651
     */\
652
    short *dct_coeff;\
653
\
654
    /**\
655
     * Motion referece frame index\
656
     * - encoding: set by user\
657
     * - decoding: set by lavc\
658
     */\
659
    int8_t *ref_index[2];
660

    
661
#define FF_QSCALE_TYPE_MPEG1 0
662
#define FF_QSCALE_TYPE_MPEG2 1
663
#define FF_QSCALE_TYPE_H264  2
664

    
665
#define FF_BUFFER_TYPE_INTERNAL 1
666
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
667
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
668
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, don't dealloc anything
669

    
670

    
671
#define FF_I_TYPE 1 // Intra
672
#define FF_P_TYPE 2 // Predicted
673
#define FF_B_TYPE 3 // Bi-dir predicted
674
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
675
#define FF_SI_TYPE 5
676
#define FF_SP_TYPE 6
677

    
678
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
679
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
680
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
681
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
682

    
683
/**
684
 * Audio Video Frame.
685
 */
686
typedef struct AVFrame {
687
    FF_COMMON_FRAME
688
} AVFrame;
689

    
690
#define DEFAULT_FRAME_RATE_BASE 1001000
691

    
692
/**
693
 * Used by av_log
694
 */
695
typedef struct AVCLASS AVClass;
696
struct AVCLASS {
697
    const char* class_name;
698
    const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
699
                                        or AVFormatContext, which begin with an AVClass.
700
                                        Needed because av_log is in libavcodec and has no visibility
701
                                        of AVIn/OutputFormat */
702
    struct AVOption *option;
703
};
704

    
705
/**
706
 * main external api structure.
707
 */
708
typedef struct AVCodecContext {
709
    /**
710
     * Info on struct for av_log
711
     * - set by avcodec_alloc_context
712
     */
713
    AVClass *av_class;
714
    /**
715
     * the average bitrate.
716
     * - encoding: set by user. unused for constant quantizer encoding
717
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
718
     */
719
    int bit_rate;
720

    
721
    /**
722
     * number of bits the bitstream is allowed to diverge from the reference.
723
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
724
     * - encoding: set by user. unused for constant quantizer encoding
725
     * - decoding: unused
726
     */
727
    int bit_rate_tolerance;
728

    
729
    /**
730
     * CODEC_FLAG_*.
731
     * - encoding: set by user.
732
     * - decoding: set by user.
733
     */
734
    int flags;
735

    
736
    /**
737
     * some codecs needs additionnal format info. It is stored here
738
     * - encoding: set by user.
739
     * - decoding: set by lavc. (FIXME is this ok?)
740
     */
741
    int sub_id;
742

    
743
    /**
744
     * motion estimation algorithm used for video coding.
745
     * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
746
     * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
747
     * - encoding: MUST be set by user.
748
     * - decoding: unused
749
     */
750
    int me_method;
751

    
752
    /**
753
     * some codecs need / can use extra-data like huffman tables.
754
     * mjpeg: huffman tables
755
     * rv10: additional flags
756
     * mpeg4: global headers (they can be in the bitstream or here)
757
     * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
758
     * then extradata_size to avoid prolems if its read with the bitstream reader
759
     * the bytewise contents of extradata must not depend on the architecture or cpu endianness
760
     * - encoding: set/allocated/freed by lavc.
761
     * - decoding: set/allocated/freed by user.
762
     */
763
    void *extradata;
764
    int extradata_size;
765

    
766
    /**
767
     * this is the fundamental unit of time (in seconds) in terms
768
     * of which frame timestamps are represented. for fixed-fps content,
769
     * timebase should be 1/framerate and timestamp increments should be
770
     * identically 1.
771
     * - encoding: MUST be set by user
772
     * - decoding: set by lavc.
773
     */
774
    AVRational time_base;
775

    
776
    /* video only */
777
    /**
778
     * picture width / height.
779
     * - encoding: MUST be set by user.
780
     * - decoding: set by lavc.
781
     * Note, for compatibility its possible to set this instead of
782
     * coded_width/height before decoding
783
     */
784
    int width, height;
785

    
786
#define FF_ASPECT_EXTENDED 15
787

    
788
    /**
789
     * the number of pictures in a group of pitures, or 0 for intra_only.
790
     * - encoding: set by user.
791
     * - decoding: unused
792
     */
793
    int gop_size;
794

    
795
    /**
796
     * pixel format, see PIX_FMT_xxx.
797
     * - encoding: set by user.
798
     * - decoding: set by lavc.
799
     */
800
    enum PixelFormat pix_fmt;
801

    
802
    /**
803
     * Frame rate emulation. If not zero lower layer (i.e. format handler)
804
     * has to read frames at native frame rate.
805
     * - encoding: set by user.
806
     * - decoding: unused.
807
     */
808
    int rate_emu;
809

    
810
    /**
811
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
812
     * decoder to draw an horizontal band. It improve cache usage. Not
813
     * all codecs can do that. You must check the codec capabilities
814
     * before
815
     * - encoding: unused
816
     * - decoding: set by user.
817
     * @param height the height of the slice
818
     * @param y the y position of the slice
819
     * @param type 1->top field, 2->bottom field, 3->frame
820
     * @param offset offset into the AVFrame.data from which the slice should be read
821
     */
822
    void (*draw_horiz_band)(struct AVCodecContext *s,
823
                            const AVFrame *src, int offset[4],
824
                            int y, int type, int height);
825

    
826
    /* audio only */
827
    int sample_rate; ///< samples per sec
828
    int channels;
829

    
830
    /**
831
     * audio sample format.
832
     * - encoding: set by user.
833
     * - decoding: set by lavc.
834
     */
835
    enum SampleFormat sample_fmt;  ///< sample format, currenly unused
836

    
837
    /* the following data should not be initialized */
838
    /**
839
     * samples per packet. initialized when calling 'init'
840
     */
841
    int frame_size;
842
    int frame_number;   ///< audio or video frame number
843
    int real_pict_num;  ///< returns the real picture number of previous encoded frame
844

    
845
    /**
846
     * number of frames the decoded output will be delayed relative to
847
     * the encoded input.
848
     * - encoding: set by lavc.
849
     * - decoding: unused
850
     */
851
    int delay;
852

    
853
    /* - encoding parameters */
854
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
855
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0)
856

    
857
    /**
858
     * minimum quantizer.
859
     * - encoding: set by user.
860
     * - decoding: unused
861
     */
862
    int qmin;
863

    
864
    /**
865
     * maximum quantizer.
866
     * - encoding: set by user.
867
     * - decoding: unused
868
     */
869
    int qmax;
870

    
871
    /**
872
     * maximum quantizer difference etween frames.
873
     * - encoding: set by user.
874
     * - decoding: unused
875
     */
876
    int max_qdiff;
877

    
878
    /**
879
     * maximum number of b frames between non b frames.
880
     * note: the output will be delayed by max_b_frames+1 relative to the input
881
     * - encoding: set by user.
882
     * - decoding: unused
883
     */
884
    int max_b_frames;
885

    
886
    /**
887
     * qscale factor between ip and b frames.
888
     * - encoding: set by user.
889
     * - decoding: unused
890
     */
891
    float b_quant_factor;
892

    
893
    /** obsolete FIXME remove */
894
    int rc_strategy;
895
    int b_frame_strategy;
896

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

    
905
    struct AVCodec *codec;
906

    
907
    void *priv_data;
908

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

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

    
919

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
1100
    float rc_qmod_amp;
1101
    int rc_qmod_freq;
1102

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
1212

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

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

    
1238
    /**
1239
     * slice count.
1240
     * - encoding: set by lavc
1241
     * - decoding: set by user (or 0)
1242
     */
1243
    int slice_count;
1244
    /**
1245
     * slice offsets in the frame in bytes.
1246
     * - encoding: set/allocated by lavc
1247
     * - decoding: set/allocated by user (or NULL)
1248
     */
1249
    int *slice_offset;
1250

    
1251
    /**
1252
     * error concealment flags.
1253
     * - encoding: unused
1254
     * - decoding: set by user
1255
     */
1256
    int error_concealment;
1257
#define FF_EC_GUESS_MVS   1
1258
#define FF_EC_DEBLOCK     2
1259

    
1260
    /**
1261
     * dsp_mask could be add used to disable unwanted CPU features
1262
     * CPU features (i.e. MMX, SSE. ...)
1263
     *
1264
     * with FORCE flag you may instead enable given CPU features
1265
     * (Dangerous: usable in case of misdetection, improper usage however will
1266
     * result into program crash)
1267
     */
1268
    unsigned dsp_mask;
1269
#define FF_MM_FORCE    0x80000000 /* force usage of selected flags (OR) */
1270
    /* lower 16 bits - CPU features */
1271
#ifdef HAVE_MMX
1272
#define FF_MM_MMX      0x0001 /* standard MMX */
1273
#define FF_MM_3DNOW    0x0004 /* AMD 3DNOW */
1274
#define FF_MM_MMXEXT   0x0002 /* SSE integer functions or AMD MMX ext */
1275
#define FF_MM_SSE      0x0008 /* SSE functions */
1276
#define FF_MM_SSE2     0x0010 /* PIV SSE2 functions */
1277
#define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1278
#endif /* HAVE_MMX */
1279
#ifdef HAVE_IWMMXT
1280
#define FF_MM_IWMMXT   0x0100 /* XScale IWMMXT */
1281
#endif /* HAVE_IWMMXT */
1282

    
1283
    /**
1284
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1285
     * - encoding: set by lavc
1286
     * - decoding: set by user
1287
     */
1288
     int bits_per_sample;
1289

    
1290
    /**
1291
     * prediction method (needed for huffyuv).
1292
     * - encoding: set by user
1293
     * - decoding: unused
1294
     */
1295
     int prediction_method;
1296
#define FF_PRED_LEFT   0
1297
#define FF_PRED_PLANE  1
1298
#define FF_PRED_MEDIAN 2
1299

    
1300
    /**
1301
     * sample aspect ratio (0 if unknown).
1302
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1303
     * - encoding: set by user.
1304
     * - decoding: set by lavc.
1305
     */
1306
    AVRational sample_aspect_ratio;
1307

    
1308
    /**
1309
     * the picture in the bitstream.
1310
     * - encoding: set by lavc
1311
     * - decoding: set by lavc
1312
     */
1313
    AVFrame *coded_frame;
1314

    
1315
    /**
1316
     * debug.
1317
     * - encoding: set by user.
1318
     * - decoding: set by user.
1319
     */
1320
    int debug;
1321
#define FF_DEBUG_PICT_INFO 1
1322
#define FF_DEBUG_RC        2
1323
#define FF_DEBUG_BITSTREAM 4
1324
#define FF_DEBUG_MB_TYPE   8
1325
#define FF_DEBUG_QP        16
1326
#define FF_DEBUG_MV        32
1327
#define FF_DEBUG_DCT_COEFF 0x00000040
1328
#define FF_DEBUG_SKIP      0x00000080
1329
#define FF_DEBUG_STARTCODE 0x00000100
1330
#define FF_DEBUG_PTS       0x00000200
1331
#define FF_DEBUG_ER        0x00000400
1332
#define FF_DEBUG_MMCO      0x00000800
1333
#define FF_DEBUG_BUGS      0x00001000
1334
#define FF_DEBUG_VIS_QP    0x00002000
1335
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1336

    
1337
    /**
1338
     * debug.
1339
     * - encoding: set by user.
1340
     * - decoding: set by user.
1341
     */
1342
    int debug_mv;
1343
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1344
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1345
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1346

    
1347
    /**
1348
     * error.
1349
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1350
     * - decoding: unused
1351
     */
1352
    uint64_t error[4];
1353

    
1354
    /**
1355
     * minimum MB quantizer.
1356
     * - encoding: unused
1357
     * - decoding: unused
1358
     */
1359
    int mb_qmin;
1360

    
1361
    /**
1362
     * maximum MB quantizer.
1363
     * - encoding: unused
1364
     * - decoding: unused
1365
     */
1366
    int mb_qmax;
1367

    
1368
    /**
1369
     * motion estimation compare function.
1370
     * - encoding: set by user.
1371
     * - decoding: unused
1372
     */
1373
    int me_cmp;
1374
    /**
1375
     * subpixel motion estimation compare function.
1376
     * - encoding: set by user.
1377
     * - decoding: unused
1378
     */
1379
    int me_sub_cmp;
1380
    /**
1381
     * macroblock compare function (not supported yet).
1382
     * - encoding: set by user.
1383
     * - decoding: unused
1384
     */
1385
    int mb_cmp;
1386
    /**
1387
     * interlaced dct compare function
1388
     * - encoding: set by user.
1389
     * - decoding: unused
1390
     */
1391
    int ildct_cmp;
1392
#define FF_CMP_SAD  0
1393
#define FF_CMP_SSE  1
1394
#define FF_CMP_SATD 2
1395
#define FF_CMP_DCT  3
1396
#define FF_CMP_PSNR 4
1397
#define FF_CMP_BIT  5
1398
#define FF_CMP_RD   6
1399
#define FF_CMP_ZERO 7
1400
#define FF_CMP_VSAD 8
1401
#define FF_CMP_VSSE 9
1402
#define FF_CMP_NSSE 10
1403
#define FF_CMP_W53  11
1404
#define FF_CMP_W97  12
1405
#define FF_CMP_DCTMAX 13
1406
#define FF_CMP_DCT264 14
1407
#define FF_CMP_CHROMA 256
1408

    
1409
    /**
1410
     * ME diamond size & shape.
1411
     * - encoding: set by user.
1412
     * - decoding: unused
1413
     */
1414
    int dia_size;
1415

    
1416
    /**
1417
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1418
     * - encoding: set by user.
1419
     * - decoding: unused
1420
     */
1421
    int last_predictor_count;
1422

    
1423
    /**
1424
     * pre pass for motion estimation.
1425
     * - encoding: set by user.
1426
     * - decoding: unused
1427
     */
1428
    int pre_me;
1429

    
1430
    /**
1431
     * motion estimation pre pass compare function.
1432
     * - encoding: set by user.
1433
     * - decoding: unused
1434
     */
1435
    int me_pre_cmp;
1436

    
1437
    /**
1438
     * ME pre pass diamond size & shape.
1439
     * - encoding: set by user.
1440
     * - decoding: unused
1441
     */
1442
    int pre_dia_size;
1443

    
1444
    /**
1445
     * subpel ME quality.
1446
     * - encoding: set by user.
1447
     * - decoding: unused
1448
     */
1449
    int me_subpel_quality;
1450

    
1451
    /**
1452
     * callback to negotiate the pixelFormat.
1453
     * @param fmt is the list of formats which are supported by the codec,
1454
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1455
     * the first is allways the native one
1456
     * @return the choosen format
1457
     * - encoding: unused
1458
     * - decoding: set by user, if not set then the native format will always be choosen
1459
     */
1460
    enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1461

    
1462
    /**
1463
     * DTG active format information (additionnal aspect ratio
1464
     * information only used in DVB MPEG2 transport streams). 0 if
1465
     * not set.
1466
     *
1467
     * - encoding: unused.
1468
     * - decoding: set by decoder
1469
     */
1470
    int dtg_active_format;
1471
#define FF_DTG_AFD_SAME         8
1472
#define FF_DTG_AFD_4_3          9
1473
#define FF_DTG_AFD_16_9         10
1474
#define FF_DTG_AFD_14_9         11
1475
#define FF_DTG_AFD_4_3_SP_14_9  13
1476
#define FF_DTG_AFD_16_9_SP_14_9 14
1477
#define FF_DTG_AFD_SP_4_3       15
1478

    
1479
    /**
1480
     * Maximum motion estimation search range in subpel units.
1481
     * if 0 then no limit
1482
     *
1483
     * - encoding: set by user.
1484
     * - decoding: unused.
1485
     */
1486
    int me_range;
1487

    
1488
    /**
1489
     * intra quantizer bias.
1490
     * - encoding: set by user.
1491
     * - decoding: unused
1492
     */
1493
    int intra_quant_bias;
1494
#define FF_DEFAULT_QUANT_BIAS 999999
1495

    
1496
    /**
1497
     * inter quantizer bias.
1498
     * - encoding: set by user.
1499
     * - decoding: unused
1500
     */
1501
    int inter_quant_bias;
1502

    
1503
    /**
1504
     * color table ID.
1505
     * - encoding: unused.
1506
     * - decoding: which clrtable should be used for 8bit RGB images
1507
     *             table have to be stored somewhere FIXME
1508
     */
1509
    int color_table_id;
1510

    
1511
    /**
1512
     * internal_buffer count.
1513
     * Don't touch, used by lavc default_get_buffer()
1514
     */
1515
    int internal_buffer_count;
1516

    
1517
    /**
1518
     * internal_buffers.
1519
     * Don't touch, used by lavc default_get_buffer()
1520
     */
1521
    void *internal_buffer;
1522

    
1523
#define FF_LAMBDA_SHIFT 7
1524
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1525
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1526
#define FF_LAMBDA_MAX (256*128-1)
1527

    
1528
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1529
    /**
1530
     * global quality for codecs which cannot change it per frame.
1531
     * this should be proportional to MPEG1/2/4 qscale.
1532
     * - encoding: set by user.
1533
     * - decoding: unused
1534
     */
1535
    int global_quality;
1536

    
1537
#define FF_CODER_TYPE_VLC   0
1538
#define FF_CODER_TYPE_AC    1
1539
    /**
1540
     * coder type
1541
     * - encoding: set by user.
1542
     * - decoding: unused
1543
     */
1544
    int coder_type;
1545

    
1546
    /**
1547
     * context model
1548
     * - encoding: set by user.
1549
     * - decoding: unused
1550
     */
1551
    int context_model;
1552
#if 0
1553
    /**
1554
     *
1555
     * - encoding: unused
1556
     * - decoding: set by user.
1557
     */
1558
    uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1559
#endif
1560

    
1561
    /**
1562
     * slice flags
1563
     * - encoding: unused
1564
     * - decoding: set by user.
1565
     */
1566
    int slice_flags;
1567
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1568
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1569
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1570

    
1571
    /**
1572
     * XVideo Motion Acceleration
1573
     * - encoding: forbidden
1574
     * - decoding: set by decoder
1575
     */
1576
    int xvmc_acceleration;
1577

    
1578
    /**
1579
     * macroblock decision mode
1580
     * - encoding: set by user.
1581
     * - decoding: unused
1582
     */
1583
    int mb_decision;
1584
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1585
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1586
#define FF_MB_DECISION_RD     2        ///< rate distoration
1587

    
1588
    /**
1589
     * custom intra quantization matrix
1590
     * - encoding: set by user, can be NULL
1591
     * - decoding: set by lavc
1592
     */
1593
    uint16_t *intra_matrix;
1594

    
1595
    /**
1596
     * custom inter quantization matrix
1597
     * - encoding: set by user, can be NULL
1598
     * - decoding: set by lavc
1599
     */
1600
    uint16_t *inter_matrix;
1601

    
1602
    /**
1603
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1604
     * this is used to workaround some encoder bugs
1605
     * - encoding: unused
1606
     * - decoding: set by user, will be converted to upper case by lavc during init
1607
     */
1608
    unsigned int stream_codec_tag;
1609

    
1610
    /**
1611
     * scene change detection threshold.
1612
     * 0 is default, larger means fewer detected scene changes
1613
     * - encoding: set by user.
1614
     * - decoding: unused
1615
     */
1616
    int scenechange_threshold;
1617

    
1618
    /**
1619
     * minimum lagrange multipler
1620
     * - encoding: set by user.
1621
     * - decoding: unused
1622
     */
1623
    int lmin;
1624

    
1625
    /**
1626
     * maximum lagrange multipler
1627
     * - encoding: set by user.
1628
     * - decoding: unused
1629
     */
1630
    int lmax;
1631

    
1632
    /**
1633
     * Palette control structure
1634
     * - encoding: ??? (no palette-enabled encoder yet)
1635
     * - decoding: set by user.
1636
     */
1637
    struct AVPaletteControl *palctrl;
1638

    
1639
    /**
1640
     * noise reduction strength
1641
     * - encoding: set by user.
1642
     * - decoding: unused
1643
     */
1644
    int noise_reduction;
1645

    
1646
    /**
1647
     * called at the beginning of a frame to get cr buffer for it.
1648
     * buffer type (size, hints) must be the same. lavc won't check it.
1649
     * lavc will pass previous buffer in pic, function should return
1650
     * same buffer or new buffer with old frame "painted" into it.
1651
     * if pic.data[0] == NULL must behave like get_buffer().
1652
     * - encoding: unused
1653
     * - decoding: set by lavc, user can override
1654
     */
1655
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1656

    
1657
    /**
1658
     * number of bits which should be loaded into the rc buffer before decoding starts
1659
     * - encoding: set by user.
1660
     * - decoding: unused
1661
     */
1662
    int rc_initial_buffer_occupancy;
1663

    
1664
    /**
1665
     *
1666
     * - encoding: set by user.
1667
     * - decoding: unused
1668
     */
1669
    int inter_threshold;
1670

    
1671
    /**
1672
     * CODEC_FLAG2_*.
1673
     * - encoding: set by user.
1674
     * - decoding: set by user.
1675
     */
1676
    int flags2;
1677

    
1678
    /**
1679
     * simulates errors in the bitstream to test error concealment.
1680
     * - encoding: set by user.
1681
     * - decoding: unused.
1682
     */
1683
    int error_rate;
1684

    
1685
    /**
1686
     * MP3 antialias algorithm, see FF_AA_* below.
1687
     * - encoding: unused
1688
     * - decoding: set by user
1689
     */
1690
    int antialias_algo;
1691
#define FF_AA_AUTO    0
1692
#define FF_AA_FASTINT 1 //not implemented yet
1693
#define FF_AA_INT     2
1694
#define FF_AA_FLOAT   3
1695
    /**
1696
     * Quantizer noise shaping.
1697
     * - encoding: set by user
1698
     * - decoding: unused
1699
     */
1700
    int quantizer_noise_shaping;
1701

    
1702
    /**
1703
     * Thread count.
1704
     * is used to decide how many independant tasks should be passed to execute()
1705
     * - encoding: set by user
1706
     * - decoding: set by user
1707
     */
1708
    int thread_count;
1709

    
1710
    /**
1711
     * the codec may call this to execute several independant things. it will return only after
1712
     * finishing all tasks, the user may replace this with some multithreaded implementation, the
1713
     * default implementation will execute the parts serially
1714
     * @param count the number of things to execute
1715
     * - encoding: set by lavc, user can override
1716
     * - decoding: set by lavc, user can override
1717
     */
1718
    int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1719

    
1720
    /**
1721
     * Thread opaque.
1722
     * can be used by execute() to store some per AVCodecContext stuff.
1723
     * - encoding: set by execute()
1724
     * - decoding: set by execute()
1725
     */
1726
    void *thread_opaque;
1727

    
1728
    /**
1729
     * Motion estimation threshold. under which no motion estimation is
1730
     * performed, but instead the user specified motion vectors are used
1731
     *
1732
     * - encoding: set by user
1733
     * - decoding: unused
1734
     */
1735
     int me_threshold;
1736

    
1737
    /**
1738
     * Macroblock threshold. under which the user specified macroblock types will be used
1739
     * - encoding: set by user
1740
     * - decoding: unused
1741
     */
1742
     int mb_threshold;
1743

    
1744
    /**
1745
     * precision of the intra dc coefficient - 8.
1746
     * - encoding: set by user
1747
     * - decoding: unused
1748
     */
1749
     int intra_dc_precision;
1750

    
1751
    /**
1752
     * noise vs. sse weight for the nsse comparsion function.
1753
     * - encoding: set by user
1754
     * - decoding: unused
1755
     */
1756
     int nsse_weight;
1757

    
1758
    /**
1759
     * number of macroblock rows at the top which are skipped.
1760
     * - encoding: unused
1761
     * - decoding: set by user
1762
     */
1763
     int skip_top;
1764

    
1765
    /**
1766
     * number of macroblock rows at the bottom which are skipped.
1767
     * - encoding: unused
1768
     * - decoding: set by user
1769
     */
1770
     int skip_bottom;
1771

    
1772
    /**
1773
     * profile
1774
     * - encoding: set by user
1775
     * - decoding: set by lavc
1776
     */
1777
     int profile;
1778
#define FF_PROFILE_UNKNOWN -99
1779

    
1780
    /**
1781
     * level
1782
     * - encoding: set by user
1783
     * - decoding: set by lavc
1784
     */
1785
     int level;
1786
#define FF_LEVEL_UNKNOWN -99
1787

    
1788
    /**
1789
     * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1790
     * - encoding: unused
1791
     * - decoding: set by user
1792
     */
1793
     int lowres;
1794

    
1795
    /**
1796
     * bitsream width / height. may be different from width/height if lowres
1797
     * or other things are used
1798
     * - encoding: unused
1799
     * - decoding: set by user before init if known, codec should override / dynamically change if needed
1800
     */
1801
    int coded_width, coded_height;
1802

    
1803
    /**
1804
     * frame skip threshold
1805
     * - encoding: set by user
1806
     * - decoding: unused
1807
     */
1808
    int frame_skip_threshold;
1809

    
1810
    /**
1811
     * frame skip factor
1812
     * - encoding: set by user
1813
     * - decoding: unused
1814
     */
1815
    int frame_skip_factor;
1816

    
1817
    /**
1818
     * frame skip exponent
1819
     * - encoding: set by user
1820
     * - decoding: unused
1821
     */
1822
    int frame_skip_exp;
1823

    
1824
    /**
1825
     * frame skip comparission function
1826
     * - encoding: set by user.
1827
     * - decoding: unused
1828
     */
1829
    int frame_skip_cmp;
1830

    
1831
    /**
1832
     * border processing masking. raises the quantizer for mbs on the borders
1833
     * of the picture.
1834
     * - encoding: set by user
1835
     * - decoding: unused
1836
     */
1837
    float border_masking;
1838

    
1839
    /**
1840
     * minimum MB lagrange multipler.
1841
     * - encoding: set by user.
1842
     * - decoding: unused
1843
     */
1844
    int mb_lmin;
1845

    
1846
    /**
1847
     * maximum MB lagrange multipler.
1848
     * - encoding: set by user.
1849
     * - decoding: unused
1850
     */
1851
    int mb_lmax;
1852

    
1853
    /**
1854
     *
1855
     * - encoding: set by user.
1856
     * - decoding: unused
1857
     */
1858
    int me_penalty_compensation;
1859

    
1860
    /**
1861
     *
1862
     * - encoding: unused
1863
     * - decoding: set by user.
1864
     */
1865
    enum AVDiscard skip_loop_filter;
1866

    
1867
    /**
1868
     *
1869
     * - encoding: unused
1870
     * - decoding: set by user.
1871
     */
1872
    enum AVDiscard skip_idct;
1873

    
1874
    /**
1875
     *
1876
     * - encoding: unused
1877
     * - decoding: set by user.
1878
     */
1879
    enum AVDiscard skip_frame;
1880

    
1881
    /**
1882
     *
1883
     * - encoding: set by user.
1884
     * - decoding: unused
1885
     */
1886
    int bidir_refine;
1887

    
1888
    /**
1889
     *
1890
     * - encoding: set by user.
1891
     * - decoding: unused
1892
     */
1893
    int brd_scale;
1894

    
1895
    /**
1896
     * constant rate factor - quality-based VBR - values ~correspond to qps
1897
     * - encoding: set by user.
1898
     * - decoding: unused
1899
     */
1900
    int crf;
1901

    
1902
    /**
1903
     * constant quantization parameter rate control method
1904
     * - encoding: set by user.
1905
     * - decoding: unused
1906
     */
1907
    int cqp;
1908

    
1909
    /**
1910
     * minimum gop size
1911
     * - encoding: set by user.
1912
     * - decoding: unused
1913
     */
1914
    int keyint_min;
1915

    
1916
    /**
1917
     * number of reference frames
1918
     * - encoding: set by user.
1919
     * - decoding: unused
1920
     */
1921
    int refs;
1922

    
1923
    /**
1924
     * chroma qp offset from luma
1925
     * - encoding: set by user.
1926
     * - decoding: unused
1927
     */
1928
    int chromaoffset;
1929

    
1930
    /**
1931
     * influences how often b-frames are used
1932
     * - encoding: set by user.
1933
     * - decoding: unused
1934
     */
1935
    int bframebias;
1936

    
1937
    /**
1938
     * trellis RD quantization
1939
     * - encoding: set by user.
1940
     * - decoding: unused
1941
     */
1942
    int trellis;
1943

    
1944
    /**
1945
     * reduce fluctuations in qp (before curve compression)
1946
     * - encoding: set by user.
1947
     * - decoding: unused
1948
     */
1949
    float complexityblur;
1950

    
1951
    /**
1952
     * in-loop deblocking filter alphac0 parameter
1953
     * alpha is in the range -6...6
1954
     * - encoding: set by user.
1955
     * - decoding: unused
1956
     */
1957
    int deblockalpha;
1958

    
1959
    /**
1960
     * in-loop deblocking filter beta parameter
1961
     * beta is in the range -6...6
1962
     * - encoding: set by user.
1963
     * - decoding: unused
1964
     */
1965
    int deblockbeta;
1966

    
1967
    /**
1968
     * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1969
     * - encoding: set by user.
1970
     * - decoding: unused
1971
     */
1972
    int partitions;
1973
#define X264_PART_I4X4 0x001  /* Analyse i4x4 */
1974
#define X264_PART_I8X8 0x002  /* Analyse i8x8 (requires 8x8 transform) */
1975
#define X264_PART_P8X8 0x010  /* Analyse p16x8, p8x16 and p8x8 */
1976
#define X264_PART_P4X4 0x020  /* Analyse p8x4, p4x8, p4x4 */
1977
#define X264_PART_B8X8 0x100  /* Analyse b16x8, b8x16 and b8x8 */
1978

    
1979
    /**
1980
     * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1981
     * - encoding: set by user.
1982
     * - decoding: unused
1983
     */
1984
    int directpred;
1985
    
1986
    /**
1987
     * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1988
     * - encoding: set by user.
1989
     * - decoding: unused
1990
     */
1991
    int cutoff;
1992

    
1993
    /**
1994
     * multiplied by qscale for each frame and added to scene_change_score
1995
     * - encoding: set by user.
1996
     * - decoding: unused
1997
     */
1998
    int scenechange_factor;
1999
} AVCodecContext;
2000

    
2001
/**
2002
 * AVCodec.
2003
 */
2004
typedef struct AVCodec {
2005
    const char *name;
2006
    enum CodecType type;
2007
    enum CodecID id;
2008
    int priv_data_size;
2009
    int (*init)(AVCodecContext *);
2010
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2011
    int (*close)(AVCodecContext *);
2012
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2013
                  uint8_t *buf, int buf_size);
2014
    int capabilities;
2015
#if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2016
    void *dummy; // FIXME remove next time we break binary compatibility
2017
#endif
2018
    struct AVCodec *next;
2019
    void (*flush)(AVCodecContext *);
2020
    const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2021
    const enum PixelFormat *pix_fmts;       ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2022
} AVCodec;
2023

    
2024
/**
2025
 * four components are given, that's all.
2026
 * the last component is alpha
2027
 */
2028
typedef struct AVPicture {
2029
    uint8_t *data[4];
2030
    int linesize[4];       ///< number of bytes per line
2031
} AVPicture;
2032

    
2033
/**
2034
 * AVPaletteControl
2035
 * This structure defines a method for communicating palette changes
2036
 * between and demuxer and a decoder.
2037
 */
2038
#define AVPALETTE_SIZE 1024
2039
#define AVPALETTE_COUNT 256
2040
typedef struct AVPaletteControl {
2041

    
2042
    /* demuxer sets this to 1 to indicate the palette has changed;
2043
     * decoder resets to 0 */
2044
    int palette_changed;
2045

    
2046
    /* 4-byte ARGB palette entries, stored in native byte order; note that
2047
     * the individual palette components should be on a 8-bit scale; if
2048
     * the palette data comes from a IBM VGA native format, the component
2049
     * data is probably 6 bits in size and needs to be scaled */
2050
    unsigned int palette[AVPALETTE_COUNT];
2051

    
2052
} AVPaletteControl;
2053

    
2054
typedef struct AVSubtitleRect {
2055
    uint16_t x;
2056
    uint16_t y;
2057
    uint16_t w;
2058
    uint16_t h;
2059
    uint16_t nb_colors;
2060
    int linesize;
2061
    uint32_t *rgba_palette;
2062
    uint8_t *bitmap;
2063
} AVSubtitleRect;
2064

    
2065
typedef struct AVSubtitle {
2066
    uint16_t format; /* 0 = graphics */
2067
    uint32_t start_display_time; /* relative to packet pts, in ms */
2068
    uint32_t end_display_time; /* relative to packet pts, in ms */
2069
    uint32_t num_rects;
2070
    AVSubtitleRect *rects;
2071
} AVSubtitle;
2072

    
2073
extern AVCodec ac3_encoder;
2074
extern AVCodec mp2_encoder;
2075
extern AVCodec mp3lame_encoder;
2076
extern AVCodec oggvorbis_encoder;
2077
extern AVCodec oggtheora_encoder;
2078
extern AVCodec faac_encoder;
2079
extern AVCodec xvid_encoder;
2080
extern AVCodec mpeg1video_encoder;
2081
extern AVCodec mpeg2video_encoder;
2082
extern AVCodec h261_encoder;
2083
extern AVCodec h263_encoder;
2084
extern AVCodec h263p_encoder;
2085
extern AVCodec flv_encoder;
2086
extern AVCodec rv10_encoder;
2087
extern AVCodec rv20_encoder;
2088
extern AVCodec dvvideo_encoder;
2089
extern AVCodec mjpeg_encoder;
2090
extern AVCodec ljpeg_encoder;
2091
extern AVCodec jpegls_encoder;
2092
extern AVCodec png_encoder;
2093
extern AVCodec ppm_encoder;
2094
extern AVCodec pgm_encoder;
2095
extern AVCodec pgmyuv_encoder;
2096
extern AVCodec pbm_encoder;
2097
extern AVCodec pam_encoder;
2098
extern AVCodec mpeg4_encoder;
2099
extern AVCodec msmpeg4v1_encoder;
2100
extern AVCodec msmpeg4v2_encoder;
2101
extern AVCodec msmpeg4v3_encoder;
2102
extern AVCodec wmv1_encoder;
2103
extern AVCodec wmv2_encoder;
2104
extern AVCodec huffyuv_encoder;
2105
extern AVCodec ffvhuff_encoder;
2106
extern AVCodec h264_encoder;
2107
extern AVCodec asv1_encoder;
2108
extern AVCodec asv2_encoder;
2109
extern AVCodec vcr1_encoder;
2110
extern AVCodec ffv1_encoder;
2111
extern AVCodec snow_encoder;
2112
extern AVCodec mdec_encoder;
2113
extern AVCodec zlib_encoder;
2114
extern AVCodec sonic_encoder;
2115
extern AVCodec sonic_ls_encoder;
2116
extern AVCodec svq1_encoder;
2117
extern AVCodec x264_encoder;
2118

    
2119
extern AVCodec h263_decoder;
2120
extern AVCodec h261_decoder;
2121
extern AVCodec mpeg4_decoder;
2122
extern AVCodec msmpeg4v1_decoder;
2123
extern AVCodec msmpeg4v2_decoder;
2124
extern AVCodec msmpeg4v3_decoder;
2125
extern AVCodec wmv1_decoder;
2126
extern AVCodec wmv2_decoder;
2127
extern AVCodec vc9_decoder;
2128
extern AVCodec wmv3_decoder;
2129
extern AVCodec mpeg1video_decoder;
2130
extern AVCodec mpeg2video_decoder;
2131
extern AVCodec mpegvideo_decoder;
2132
extern AVCodec mpeg_xvmc_decoder;
2133
extern AVCodec h263i_decoder;
2134
extern AVCodec flv_decoder;
2135
extern AVCodec rv10_decoder;
2136
extern AVCodec rv20_decoder;
2137
extern AVCodec rv30_decoder;
2138
extern AVCodec rv40_decoder;
2139
extern AVCodec svq1_decoder;
2140
extern AVCodec svq3_decoder;
2141
extern AVCodec dvvideo_decoder;
2142
extern AVCodec wmav1_decoder;
2143
extern AVCodec wmav2_decoder;
2144
extern AVCodec mjpeg_decoder;
2145
extern AVCodec mjpegb_decoder;
2146
extern AVCodec sp5x_decoder;
2147
extern AVCodec png_decoder;
2148
extern AVCodec mp2_decoder;
2149
extern AVCodec mp3_decoder;
2150
extern AVCodec mp3adu_decoder;
2151
extern AVCodec mp3on4_decoder;
2152
extern AVCodec qdm2_decoder;
2153
extern AVCodec cook_decoder;
2154
extern AVCodec truespeech_decoder;
2155
extern AVCodec mace3_decoder;
2156
extern AVCodec mace6_decoder;
2157
extern AVCodec huffyuv_decoder;
2158
extern AVCodec ffvhuff_decoder;
2159
extern AVCodec oggvorbis_decoder;
2160
extern AVCodec oggtheora_decoder;
2161
extern AVCodec cyuv_decoder;
2162
extern AVCodec h264_decoder;
2163
extern AVCodec indeo3_decoder;
2164
extern AVCodec vp3_decoder;
2165
extern AVCodec theora_decoder;
2166
extern AVCodec amr_nb_decoder;
2167
extern AVCodec amr_nb_encoder;
2168
extern AVCodec amr_wb_encoder;
2169
extern AVCodec amr_wb_decoder;
2170
extern AVCodec aac_decoder;
2171
extern AVCodec mpeg4aac_decoder;
2172
extern AVCodec asv1_decoder;
2173
extern AVCodec asv2_decoder;
2174
extern AVCodec vcr1_decoder;
2175
extern AVCodec cljr_decoder;
2176
extern AVCodec ffv1_decoder;
2177
extern AVCodec snow_decoder;
2178
extern AVCodec fourxm_decoder;
2179
extern AVCodec mdec_decoder;
2180
extern AVCodec roq_decoder;
2181
extern AVCodec interplay_video_decoder;
2182
extern AVCodec xan_wc3_decoder;
2183
extern AVCodec rpza_decoder;
2184
extern AVCodec cinepak_decoder;
2185
extern AVCodec msrle_decoder;
2186
extern AVCodec msvideo1_decoder;
2187
extern AVCodec vqa_decoder;
2188
extern AVCodec idcin_decoder;
2189
extern AVCodec eightbps_decoder;
2190
extern AVCodec smc_decoder;
2191
extern AVCodec flic_decoder;
2192
extern AVCodec vmdvideo_decoder;
2193
extern AVCodec vmdaudio_decoder;
2194
extern AVCodec truemotion1_decoder;
2195
extern AVCodec truemotion2_decoder;
2196
extern AVCodec mszh_decoder;
2197
extern AVCodec zlib_decoder;
2198
extern AVCodec ra_144_decoder;
2199
extern AVCodec ra_288_decoder;
2200
extern AVCodec roq_dpcm_decoder;
2201
extern AVCodec interplay_dpcm_decoder;
2202
extern AVCodec xan_dpcm_decoder;
2203
extern AVCodec sol_dpcm_decoder;
2204
extern AVCodec sonic_decoder;
2205
extern AVCodec qtrle_decoder;
2206
extern AVCodec flac_decoder;
2207
extern AVCodec tscc_decoder;
2208
extern AVCodec cscd_decoder;
2209
extern AVCodec ulti_decoder;
2210
extern AVCodec qdraw_decoder;
2211
extern AVCodec xl_decoder;
2212
extern AVCodec qpeg_decoder;
2213
extern AVCodec shorten_decoder;
2214
extern AVCodec loco_decoder;
2215
extern AVCodec wnv1_decoder;
2216
extern AVCodec aasc_decoder;
2217
extern AVCodec alac_decoder;
2218
extern AVCodec ws_snd1_decoder;
2219
extern AVCodec indeo2_decoder;
2220
extern AVCodec vorbis_decoder;
2221
extern AVCodec fraps_decoder;
2222
extern AVCodec libgsm_encoder;
2223
extern AVCodec libgsm_decoder;
2224
extern AVCodec bmp_decoder;
2225

    
2226
/* pcm codecs */
2227
#define PCM_CODEC(id, name) \
2228
extern AVCodec name ## _decoder; \
2229
extern AVCodec name ## _encoder
2230

    
2231
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2232
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2233
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2234
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2235
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2236
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2237
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2238
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2239
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2240
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2241
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2242
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2243
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2244
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2245
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2246
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2247
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2248

    
2249
/* adpcm codecs */
2250

    
2251
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2252
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2253
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2254
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2255
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2256
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2257
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2258
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2259
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2260
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2261
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2262
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2263
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2264
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2265
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2266

    
2267
#undef PCM_CODEC
2268

    
2269
/* dummy raw video codec */
2270
extern AVCodec rawvideo_encoder;
2271
extern AVCodec rawvideo_decoder;
2272

    
2273
/* the following codecs use external GPL libs */
2274
extern AVCodec ac3_decoder;
2275
extern AVCodec dts_decoder;
2276

    
2277
/* subtitles */
2278
extern AVCodec dvdsub_encoder;
2279
extern AVCodec dvdsub_decoder;
2280
extern AVCodec dvbsub_encoder;
2281
extern AVCodec dvbsub_decoder;
2282

    
2283
/* resample.c */
2284

    
2285
struct ReSampleContext;
2286
struct AVResampleContext;
2287

    
2288
typedef struct ReSampleContext ReSampleContext;
2289

    
2290
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2291
                                     int output_rate, int input_rate);
2292
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2293
void audio_resample_close(ReSampleContext *s);
2294

    
2295
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2296
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2297
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2298
void av_resample_close(struct AVResampleContext *c);
2299

    
2300
/* YUV420 format is assumed ! */
2301

    
2302
struct ImgReSampleContext;
2303

    
2304
typedef struct ImgReSampleContext ImgReSampleContext;
2305

    
2306
ImgReSampleContext *img_resample_init(int output_width, int output_height,
2307
                                      int input_width, int input_height);
2308

    
2309
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2310
                                      int iwidth, int iheight,
2311
                                      int topBand, int bottomBand,
2312
                                      int leftBand, int rightBand,
2313
                                      int padtop, int padbottom,
2314
                                      int padleft, int padright);
2315

    
2316

    
2317
void img_resample(ImgReSampleContext *s,
2318
                  AVPicture *output, const AVPicture *input);
2319

    
2320
void img_resample_close(ImgReSampleContext *s);
2321

    
2322
/**
2323
 * Allocate memory for a picture.  Call avpicture_free to free it.
2324
 *
2325
 * @param picture the picture to be filled in.
2326
 * @param pix_fmt the format of the picture.
2327
 * @param width the width of the picture.
2328
 * @param height the height of the picture.
2329
 * @return 0 if successful, -1 if not.
2330
 */
2331
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2332

    
2333
/* Free a picture previously allocated by avpicture_alloc. */
2334
void avpicture_free(AVPicture *picture);
2335

    
2336
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2337
                   int pix_fmt, int width, int height);
2338
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2339
                     unsigned char *dest, int dest_size);
2340
int avpicture_get_size(int pix_fmt, int width, int height);
2341
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2342
const char *avcodec_get_pix_fmt_name(int pix_fmt);
2343
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2344
enum PixelFormat avcodec_get_pix_fmt(const char* name);
2345
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2346

    
2347
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
2348
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
2349
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
2350
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
2351
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
2352
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2353

    
2354
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2355
                             int has_alpha);
2356
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2357
                              int has_alpha, int *loss_ptr);
2358

    
2359
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
2360
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
2361
int img_get_alpha_info(const AVPicture *src,
2362
                       int pix_fmt, int width, int height);
2363

    
2364
/* convert among pixel formats */
2365
int img_convert(AVPicture *dst, int dst_pix_fmt,
2366
                const AVPicture *src, int pix_fmt,
2367
                int width, int height);
2368

    
2369
/* deinterlace a picture */
2370
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2371
                          int pix_fmt, int width, int height);
2372

    
2373
/* external high level API */
2374

    
2375
extern AVCodec *first_avcodec;
2376

    
2377
/* returns LIBAVCODEC_VERSION_INT constant */
2378
unsigned avcodec_version(void);
2379
/* returns LIBAVCODEC_BUILD constant */
2380
unsigned avcodec_build(void);
2381
void avcodec_init(void);
2382

    
2383
void register_avcodec(AVCodec *format);
2384
AVCodec *avcodec_find_encoder(enum CodecID id);
2385
AVCodec *avcodec_find_encoder_by_name(const char *name);
2386
AVCodec *avcodec_find_decoder(enum CodecID id);
2387
AVCodec *avcodec_find_decoder_by_name(const char *name);
2388
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2389

    
2390
void avcodec_get_context_defaults(AVCodecContext *s);
2391
AVCodecContext *avcodec_alloc_context(void);
2392
void avcodec_get_frame_defaults(AVFrame *pic);
2393
AVFrame *avcodec_alloc_frame(void);
2394

    
2395
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2396
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2397
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2398
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2399
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2400
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2401

    
2402
int avcodec_thread_init(AVCodecContext *s, int thread_count);
2403
void avcodec_thread_free(AVCodecContext *s);
2404
int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2405
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2406
//FIXME func typedef
2407

    
2408
/**
2409
 * opens / inits the AVCodecContext.
2410
 * not thread save!
2411
 */
2412
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2413

    
2414
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2415
                         int *frame_size_ptr,
2416
                         uint8_t *buf, int buf_size);
2417
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2418
                         int *got_picture_ptr,
2419
                         uint8_t *buf, int buf_size);
2420
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2421
                            int *got_sub_ptr,
2422
                            const uint8_t *buf, int buf_size);
2423
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2424
                        int *data_size_ptr,
2425
                        uint8_t *buf, int buf_size);
2426
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2427
                         const short *samples);
2428
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2429
                         const AVFrame *pict);
2430
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2431
                            const AVSubtitle *sub);
2432

    
2433
int avcodec_close(AVCodecContext *avctx);
2434

    
2435
void avcodec_register_all(void);
2436

    
2437
void avcodec_flush_buffers(AVCodecContext *avctx);
2438

    
2439
void avcodec_default_free_buffers(AVCodecContext *s);
2440

    
2441
/* misc usefull functions */
2442

    
2443
/**
2444
 * returns a single letter to describe the picture type
2445
 */
2446
char av_get_pict_type_char(int pict_type);
2447

    
2448

    
2449
/* frame parsing */
2450
typedef struct AVCodecParserContext {
2451
    void *priv_data;
2452
    struct AVCodecParser *parser;
2453
    int64_t frame_offset; /* offset of the current frame */
2454
    int64_t cur_offset; /* current offset
2455
                           (incremented by each av_parser_parse()) */
2456
    int64_t last_frame_offset; /* offset of the last frame */
2457
    /* video info */
2458
    int pict_type; /* XXX: put it back in AVCodecContext */
2459
    int repeat_pict; /* XXX: put it back in AVCodecContext */
2460
    int64_t pts;     /* pts of the current frame */
2461
    int64_t dts;     /* dts of the current frame */
2462

    
2463
    /* private data */
2464
    int64_t last_pts;
2465
    int64_t last_dts;
2466
    int fetch_timestamp;
2467

    
2468
#define AV_PARSER_PTS_NB 4
2469
    int cur_frame_start_index;
2470
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2471
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2472
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2473

    
2474
    int flags;
2475
#define PARSER_FLAG_COMPLETE_FRAMES           0x0001
2476
} AVCodecParserContext;
2477

    
2478
typedef struct AVCodecParser {
2479
    int codec_ids[5]; /* several codec IDs are permitted */
2480
    int priv_data_size;
2481
    int (*parser_init)(AVCodecParserContext *s);
2482
    int (*parser_parse)(AVCodecParserContext *s,
2483
                        AVCodecContext *avctx,
2484
                        uint8_t **poutbuf, int *poutbuf_size,
2485
                        const uint8_t *buf, int buf_size);
2486
    void (*parser_close)(AVCodecParserContext *s);
2487
    int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2488
    struct AVCodecParser *next;
2489
} AVCodecParser;
2490

    
2491
extern AVCodecParser *av_first_parser;
2492

    
2493
void av_register_codec_parser(AVCodecParser *parser);
2494
AVCodecParserContext *av_parser_init(int codec_id);
2495
int av_parser_parse(AVCodecParserContext *s,
2496
                    AVCodecContext *avctx,
2497
                    uint8_t **poutbuf, int *poutbuf_size,
2498
                    const uint8_t *buf, int buf_size,
2499
                    int64_t pts, int64_t dts);
2500
int av_parser_change(AVCodecParserContext *s,
2501
                     AVCodecContext *avctx,
2502
                     uint8_t **poutbuf, int *poutbuf_size,
2503
                     const uint8_t *buf, int buf_size, int keyframe);
2504
void av_parser_close(AVCodecParserContext *s);
2505

    
2506
extern AVCodecParser mpegvideo_parser;
2507
extern AVCodecParser mpeg4video_parser;
2508
extern AVCodecParser h261_parser;
2509
extern AVCodecParser h263_parser;
2510
extern AVCodecParser h264_parser;
2511
extern AVCodecParser mjpeg_parser;
2512
extern AVCodecParser pnm_parser;
2513
extern AVCodecParser mpegaudio_parser;
2514
extern AVCodecParser ac3_parser;
2515
extern AVCodecParser dvdsub_parser;
2516
extern AVCodecParser dvbsub_parser;
2517

    
2518
/* memory */
2519
void *av_malloc(unsigned int size);
2520
void *av_mallocz(unsigned int size);
2521
void *av_realloc(void *ptr, unsigned int size);
2522
void av_free(void *ptr);
2523
char *av_strdup(const char *s);
2524
void av_freep(void *ptr);
2525
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2526
/* for static data only */
2527
/* call av_free_static to release all staticaly allocated tables */
2528
void av_free_static(void);
2529
void *av_mallocz_static(unsigned int size);
2530
void *av_realloc_static(void *ptr, unsigned int size);
2531

    
2532
/* add by bero : in adx.c */
2533
int is_adx(const unsigned char *buf,size_t bufsize);
2534

    
2535
void img_copy(AVPicture *dst, const AVPicture *src,
2536
              int pix_fmt, int width, int height);
2537

    
2538
/* av_log API */
2539

    
2540
#include <stdarg.h>
2541

    
2542
#define AV_LOG_QUIET -1
2543
#define AV_LOG_ERROR 0
2544
#define AV_LOG_INFO 1
2545
#define AV_LOG_DEBUG 2
2546

    
2547
#ifdef __GNUC__
2548
extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2549
#else
2550
extern void av_log(void*, int level, const char *fmt, ...);
2551
#endif
2552

    
2553
extern void av_vlog(void*, int level, const char *fmt, va_list);
2554
extern int av_log_get_level(void);
2555
extern void av_log_set_level(int);
2556
extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2557

    
2558
/* endian macros */
2559
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2560
#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2561
#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
2562
                   (((uint8_t*)(x))[1] << 16) | \
2563
                   (((uint8_t*)(x))[2] << 8) | \
2564
                    ((uint8_t*)(x))[3])
2565
#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2566
#define LE_32(x)  ((((uint8_t*)(x))[3] << 24) | \
2567
                   (((uint8_t*)(x))[2] << 16) | \
2568
                   (((uint8_t*)(x))[1] << 8) | \
2569
                    ((uint8_t*)(x))[0])
2570
#endif
2571

    
2572
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2573

    
2574
#ifdef __cplusplus
2575
}
2576
#endif
2577

    
2578
#endif /* AVCODEC_H */