Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ e5966052

History | View | Annotate | Download (60.3 KB)

1
#ifndef AVCODEC_H
2
#define AVCODEC_H
3

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

    
9

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

    
14
#include "common.h"
15
#include "rational.h"
16
#include <sys/types.h> /* size_t */
17

    
18
#define FFMPEG_VERSION_INT     0x000408
19
#define FFMPEG_VERSION         "0.4.8"
20
#define LIBAVCODEC_BUILD       4701
21

    
22
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23
#define LIBAVCODEC_VERSION     FFMPEG_VERSION
24

    
25
#define AV_STRINGIFY(s)        AV_TOSTRING(s)
26
#define AV_TOSTRING(s) #s
27
#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
28

    
29
enum CodecID {
30
    CODEC_ID_NONE, 
31
    CODEC_ID_MPEG1VIDEO,
32
    CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
33
    CODEC_ID_MPEG2VIDEO_XVMC,
34
    CODEC_ID_H263,
35
    CODEC_ID_RV10,
36
    CODEC_ID_RV20,
37
    CODEC_ID_MP2,
38
    CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
39
    CODEC_ID_VORBIS,
40
    CODEC_ID_AC3,
41
    CODEC_ID_MJPEG,
42
    CODEC_ID_MJPEGB,
43
    CODEC_ID_LJPEG,
44
    CODEC_ID_SP5X,
45
    CODEC_ID_MPEG4,
46
    CODEC_ID_RAWVIDEO,
47
    CODEC_ID_MSMPEG4V1,
48
    CODEC_ID_MSMPEG4V2,
49
    CODEC_ID_MSMPEG4V3,
50
    CODEC_ID_WMV1,
51
    CODEC_ID_WMV2,
52
    CODEC_ID_H263P,
53
    CODEC_ID_H263I,
54
    CODEC_ID_FLV1,
55
    CODEC_ID_SVQ1,
56
    CODEC_ID_SVQ3,
57
    CODEC_ID_DVVIDEO,
58
    CODEC_ID_DVAUDIO,
59
    CODEC_ID_WMAV1,
60
    CODEC_ID_WMAV2,
61
    CODEC_ID_MACE3,
62
    CODEC_ID_MACE6,
63
    CODEC_ID_HUFFYUV,
64
    CODEC_ID_CYUV,
65
    CODEC_ID_H264,
66
    CODEC_ID_INDEO3,
67
    CODEC_ID_VP3,
68
    CODEC_ID_THEORA,
69
    CODEC_ID_AAC,
70
    CODEC_ID_MPEG4AAC,
71
    CODEC_ID_ASV1,
72
    CODEC_ID_ASV2,
73
    CODEC_ID_FFV1,
74
    CODEC_ID_4XM,
75
    CODEC_ID_VCR1,
76
    CODEC_ID_CLJR,
77
    CODEC_ID_MDEC,
78
    CODEC_ID_ROQ,
79
    CODEC_ID_INTERPLAY_VIDEO,
80
    CODEC_ID_XAN_WC3,
81
    CODEC_ID_XAN_WC4,
82
    CODEC_ID_RPZA,
83
    CODEC_ID_CINEPAK,
84
    CODEC_ID_WS_VQA,
85
    CODEC_ID_MSRLE,
86
    CODEC_ID_MSVIDEO1,
87
    CODEC_ID_IDCIN,
88
    CODEC_ID_8BPS,
89
    CODEC_ID_SMC,
90
    CODEC_ID_FLIC,
91
    CODEC_ID_TRUEMOTION1,
92
    CODEC_ID_VMDVIDEO,
93
    CODEC_ID_VMDAUDIO,
94
    CODEC_ID_MSZH,
95
    CODEC_ID_ZLIB,
96
    CODEC_ID_QTRLE,
97

    
98
    /* various pcm "codecs" */
99
    CODEC_ID_PCM_S16LE,
100
    CODEC_ID_PCM_S16BE,
101
    CODEC_ID_PCM_U16LE,
102
    CODEC_ID_PCM_U16BE,
103
    CODEC_ID_PCM_S8,
104
    CODEC_ID_PCM_U8,
105
    CODEC_ID_PCM_MULAW,
106
    CODEC_ID_PCM_ALAW,
107

    
108
    /* various adpcm codecs */
109
    CODEC_ID_ADPCM_IMA_QT,
110
    CODEC_ID_ADPCM_IMA_WAV,
111
    CODEC_ID_ADPCM_IMA_DK3,
112
    CODEC_ID_ADPCM_IMA_DK4,
113
    CODEC_ID_ADPCM_IMA_WS,
114
    CODEC_ID_ADPCM_IMA_SMJPEG,
115
    CODEC_ID_ADPCM_MS,
116
    CODEC_ID_ADPCM_4XM,
117
    CODEC_ID_ADPCM_XA,
118
    CODEC_ID_ADPCM_ADX,
119
    CODEC_ID_ADPCM_EA,
120
    CODEC_ID_ADPCM_G726,
121

    
122
        /* AMR */
123
    CODEC_ID_AMR_NB,
124
    CODEC_ID_AMR_WB,
125

    
126
    /* RealAudio codecs*/
127
    CODEC_ID_RA_144,
128
    CODEC_ID_RA_288,
129

    
130
    /* various DPCM codecs */
131
    CODEC_ID_ROQ_DPCM,
132
    CODEC_ID_INTERPLAY_DPCM,
133
    CODEC_ID_XAN_DPCM,
134
    
135
    CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
136
                         stream (only used by libavformat) */
137
};
138

    
139
/* CODEC_ID_MP3LAME is absolete */
140
#define CODEC_ID_MP3LAME CODEC_ID_MP3
141

    
142
enum CodecType {
143
    CODEC_TYPE_UNKNOWN = -1,
144
    CODEC_TYPE_VIDEO,
145
    CODEC_TYPE_AUDIO,
146
    CODEC_TYPE_DATA,
147
};
148

    
149
/**
150
 * Pixel format. Notes: 
151
 *
152
 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
153
 * color is put together as:
154
 *  (A << 24) | (R << 16) | (G << 8) | B
155
 * This is stored as BGRA on little endian CPU architectures and ARGB on
156
 * big endian CPUs.
157
 *
158
 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
159
 * image data is stored in AVFrame.data[0]. The palette is transported in
160
 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
161
 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
162
 * also endian-specific). Note also that the individual RGB palette
163
 * components stored in AVFrame.data[1] should be in the range 0..255.
164
 * This is important as many custom PAL8 video codecs that were designed
165
 * to run on the IBM VGA graphics adapter use 6-bit palette components.
166
 */
167
enum PixelFormat {
168
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
169
    PIX_FMT_YUV422,    
170
    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
171
    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
172
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
173
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
174
    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
175
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
176
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
177
    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
178
    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
179
    PIX_FMT_GRAY8,
180
    PIX_FMT_MONOWHITE, ///< 0 is white 
181
    PIX_FMT_MONOBLACK, ///< 0 is black 
182
    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
183
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
184
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
185
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
186
    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
187
    PIX_FMT_XVMC_MPEG2_IDCT,
188
    PIX_FMT_NB,
189
};
190

    
191
/* currently unused, may be used if 24/32 bits samples ever supported */
192
enum SampleFormat {
193
    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
194
};
195

    
196
/* in bytes */
197
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
198

    
199
/**
200
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
201
 * this is mainly needed because some optimized bitstream readers read 
202
 * 32 or 64 bit at once and could read over the end<br>
203
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
204
 * MPEG bitstreams could cause overread and segfault
205
 */
206
#define FF_INPUT_BUFFER_PADDING_SIZE 8
207

    
208
/* motion estimation type, EPZS by default */
209
enum Motion_Est_ID {
210
    ME_ZERO = 1,
211
    ME_FULL,
212
    ME_LOG,
213
    ME_PHODS,
214
    ME_EPZS,
215
    ME_X1
216
};
217

    
218
typedef struct RcOverride{
219
    int start_frame;
220
    int end_frame;
221
    int qscale; // if this is 0 then quality_factor will be used instead
222
    float quality_factor;
223
} RcOverride;
224

    
225
/* only for ME compatiblity with old apps */
226
extern int motion_estimation_method;
227

    
228
#define FF_MAX_B_FRAMES 8
229

    
230
/* encoding support
231
   these flags can be passed in AVCodecContext.flags before initing 
232
   Note: note not everything is supported yet 
233
*/
234

    
235
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
236
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
237
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
238
#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
239
#define CODEC_FLAG_MV0    0x0040  ///< always try a MB with MV=<0,0> 
240
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
241
/* parent program gurantees that the input for b-frame containing streams is not written to 
242
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
243
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
244
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
245
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
246
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
247
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
248
#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
249
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
250
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
251
                                            of only at frame boundaries */
252
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
253
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
254
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
255
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
256
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
257
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
258
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
259
/* Fx : Flag for h263+ extra options */
260
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
261
#define CODEC_FLAG_AC_PRED        0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
262
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
263
#define CODEC_FLAG_CBP_RD         0x04000000 ///< use rate distortion optimization for cbp
264
#define CODEC_FLAG_QP_RD          0x08000000 ///< use rate distortion optimization for qp selectioon
265
#define CODEC_FLAG_H263P_AIV      0x00000008 ///< H263 Alternative inter vlc
266
#define CODEC_FLAG_OBMC           0x00000001 ///< OBMC
267
#define CODEC_FLAG_LOOP_FILTER    0x00000800 ///< loop filter
268
#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
269
#define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
270
#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
271
#define CODEC_FLAG_CLOSED_GOP     0x80000000
272
/* Unsupported options :
273
 *                 Syntax Arithmetic coding (SAC)
274
 *                 Reference Picture Selection
275
 *                 Independant Segment Decoding */
276
/* /Fx */
277
/* codec capabilities */
278

    
279
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
280
/**
281
 * Codec uses get_buffer() for allocating buffers.
282
 * direct rendering method 1
283
 */
284
#define CODEC_CAP_DR1             0x0002
285
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
286
   used */
287
#define CODEC_CAP_PARSE_ONLY      0x0004
288
#define CODEC_CAP_TRUNCATED       0x0008
289

    
290
//the following defines might change, so dont expect compatibility if u use them
291
#define MB_TYPE_INTRA4x4   0x0001
292
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
293
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
294
#define MB_TYPE_16x16      0x0008
295
#define MB_TYPE_16x8       0x0010
296
#define MB_TYPE_8x16       0x0020
297
#define MB_TYPE_8x8        0x0040
298
#define MB_TYPE_INTERLACED 0x0080
299
#define MB_TYPE_DIRECT2     0x0100 //FIXME
300
#define MB_TYPE_ACPRED     0x0200
301
#define MB_TYPE_GMC        0x0400
302
#define MB_TYPE_SKIP       0x0800
303
#define MB_TYPE_P0L0       0x1000
304
#define MB_TYPE_P1L0       0x2000
305
#define MB_TYPE_P0L1       0x4000
306
#define MB_TYPE_P1L1       0x8000
307
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
308
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
309
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
310
#define MB_TYPE_QUANT      0x00010000
311
#define MB_TYPE_CBP        0x00020000
312
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
313

    
314
/**
315
 * Pan Scan area.
316
 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
317
 */
318
typedef struct AVPanScan{
319
    /**
320
     * id.
321
     * - encoding: set by user.
322
     * - decoding: set by lavc
323
     */
324
    int id;
325

    
326
    /**
327
     * width and height in 1/16 pel
328
     * - encoding: set by user.
329
     * - decoding: set by lavc
330
     */
331
    int width;
332
    int height;
333

    
334
    /**
335
     * position of the top left corner in 1/16 pel for up to 3 fields/frames.
336
     * - encoding: set by user.
337
     * - decoding: set by lavc
338
     */
339
    int16_t position[3][2];
340
}AVPanScan;
341

    
342
#define FF_COMMON_FRAME \
343
    /**\
344
     * pointer to the picture planes.\
345
     * this might be different from the first allocated byte\
346
     * - encoding: \
347
     * - decoding: \
348
     */\
349
    uint8_t *data[4];\
350
    int linesize[4];\
351
    /**\
352
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
353
     * this isnt used by lavc unless the default get/release_buffer() is used\
354
     * - encoding: \
355
     * - decoding: \
356
     */\
357
    uint8_t *base[4];\
358
    /**\
359
     * 1 -> keyframe, 0-> not\
360
     * - encoding: set by lavc\
361
     * - decoding: set by lavc\
362
     */\
363
    int key_frame;\
364
\
365
    /**\
366
     * picture type of the frame, see ?_TYPE below.\
367
     * - encoding: set by lavc for coded_picture (and set by user for input)\
368
     * - decoding: set by lavc\
369
     */\
370
    int pict_type;\
371
\
372
    /**\
373
     * presentation timestamp in micro seconds (time when frame should be shown to user)\
374
     * if 0 then the frame_rate will be used as reference\
375
     * - encoding: MUST be set by user\
376
     * - decoding: set by lavc\
377
     */\
378
    int64_t pts;\
379
\
380
    /**\
381
     * picture number in bitstream order.\
382
     * - encoding: set by\
383
     * - decoding: set by lavc\
384
     */\
385
    int coded_picture_number;\
386
    /**\
387
     * picture number in display order.\
388
     * - encoding: set by\
389
     * - decoding: set by lavc\
390
     */\
391
    int display_picture_number;\
392
\
393
    /**\
394
     * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
395
     * - encoding: set by lavc for coded_picture (and set by user for input)\
396
     * - decoding: set by lavc\
397
     */\
398
    int quality; \
399
\
400
    /**\
401
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
402
     * set to INT_MAX if the buffer has not been used yet \
403
     * - encoding: unused\
404
     * - decoding: MUST be set by get_buffer()\
405
     */\
406
    int age;\
407
\
408
    /**\
409
     * is this picture used as reference\
410
     * - encoding: unused\
411
     * - decoding: set by lavc (before get_buffer() call))\
412
     */\
413
    int reference;\
414
\
415
    /**\
416
     * QP table\
417
     * - encoding: unused\
418
     * - decoding: set by lavc\
419
     */\
420
    int8_t *qscale_table;\
421
    /**\
422
     * QP store stride\
423
     * - encoding: unused\
424
     * - decoding: set by lavc\
425
     */\
426
    int qstride;\
427
\
428
    /**\
429
     * mbskip_table[mb]>=1 if MB didnt change\
430
     * stride= mb_width = (width+15)>>4\
431
     * - encoding: unused\
432
     * - decoding: set by lavc\
433
     */\
434
    uint8_t *mbskip_table;\
435
\
436
    /**\
437
     * Motion vector table\
438
     * - encoding: unused\
439
     * - decoding: set by lavc\
440
     */\
441
    int16_t (*motion_val[2])[2];\
442
\
443
    /**\
444
     * Macroblock type table\
445
     * mb_type_base + mb_width + 2\
446
     * - encoding: unused\
447
     * - decoding: set by lavc\
448
     */\
449
    uint32_t *mb_type;\
450
\
451
    /**\
452
     * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
453
     * - encoding: unused\
454
     * - decoding: set by lavc\
455
     */\
456
    uint8_t motion_subsample_log2;\
457
\
458
    /**\
459
     * for some private data of the user\
460
     * - encoding: unused\
461
     * - decoding: set by user\
462
     */\
463
    void *opaque;\
464
\
465
    /**\
466
     * error\
467
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
468
     * - decoding: unused\
469
     */\
470
    uint64_t error[4];\
471
\
472
    /**\
473
     * type of the buffer (to keep track of who has to dealloc data[*])\
474
     * - encoding: set by the one who allocs it\
475
     * - decoding: set by the one who allocs it\
476
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
477
     */\
478
    int type;\
479
    \
480
    /**\
481
     * when decoding, this signal how much the picture must be delayed.\
482
     * extra_delay = repeat_pict / (2*fps)\
483
     * - encoding: unused\
484
     * - decoding: set by lavc\
485
     */\
486
    int repeat_pict;\
487
    \
488
    /**\
489
     * \
490
     */\
491
    int qscale_type;\
492
    \
493
    /**\
494
     * The content of the picture is interlaced.\
495
     * - encoding: set by user\
496
     * - decoding: set by lavc (default 0)\
497
     */\
498
    int interlaced_frame;\
499
    \
500
    /**\
501
     * if the content is interlaced, is top field displayed first.\
502
     * - encoding: set by user\
503
     * - decoding: set by lavc\
504
     */\
505
    int top_field_first;\
506
    \
507
    /**\
508
     * Pan scan.\
509
     * - encoding: set by user\
510
     * - decoding: set by lavc\
511
     */\
512
    AVPanScan *pan_scan;\
513
    \
514
    /**\
515
     * tell user application that palette has changed from previous frame.\
516
     * - encoding: ??? (no palette-enabled encoder yet)\
517
     * - decoding: set by lavc (default 0)\
518
     */\
519
    int palette_has_changed;\
520
    \
521
    /**\
522
     * Codec suggestion on buffer type if != 0\
523
     * - encoding: unused\
524
     * - decoding: set by lavc (before get_buffer() call))\
525
     */\
526
    int buffer_hints;\
527

    
528
#define FF_QSCALE_TYPE_MPEG1        0
529
#define FF_QSCALE_TYPE_MPEG2        1
530

    
531
#define FF_BUFFER_TYPE_INTERNAL 1
532
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers (image is (de)allocated by user)
533
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc image (data/base)
534
#define FF_BUFFER_TYPE_COPY     8 ///< just a (modified) copy of some other buffer, dont dealloc anything
535

    
536

    
537
#define FF_I_TYPE 1 // Intra
538
#define FF_P_TYPE 2 // Predicted
539
#define FF_B_TYPE 3 // Bi-dir predicted
540
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
541
#define FF_SI_TYPE 5
542
#define FF_SP_TYPE 6
543

    
544
#define FF_BUFFER_HINTS_VALID    0x01 // Buffer hints value is meaningful (if 0 ignore)
545
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
546
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
547
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
548

    
549
/**
550
 * Audio Video Frame.
551
 */
552
typedef struct AVFrame {
553
    FF_COMMON_FRAME
554
} AVFrame;
555

    
556
#define DEFAULT_FRAME_RATE_BASE 1001000
557

    
558
/**
559
 * main external api structure.
560
 */
561
typedef struct AVCodecContext {
562
    /**
563
     * the average bitrate.
564
     * - encoding: set by user. unused for constant quantizer encoding
565
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
566
     */
567
    int bit_rate;
568

    
569
    /**
570
     * number of bits the bitstream is allowed to diverge from the reference.
571
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
572
     * - encoding: set by user. unused for constant quantizer encoding
573
     * - decoding: unused
574
     */
575
    int bit_rate_tolerance; 
576

    
577
    /**
578
     * CODEC_FLAG_*.
579
     * - encoding: set by user.
580
     * - decoding: set by user.
581
     */
582
    int flags;
583

    
584
    /**
585
     * some codecs needs additionnal format info. It is stored here
586
     * - encoding: set by user. 
587
     * - decoding: set by lavc. (FIXME is this ok?)
588
     */
589
    int sub_id;
590

    
591
    /**
592
     * motion estimation algorithm used for video coding.
593
     * - encoding: MUST be set by user.
594
     * - decoding: unused
595
     */
596
    int me_method;
597

    
598
    /**
599
     * some codecs need / can use extra-data like huffman tables.
600
     * mjpeg: huffman tables
601
     * rv10: additional flags
602
     * mpeg4: global headers (they can be in the bitstream or here)
603
     * - encoding: set/allocated/freed by lavc.
604
     * - decoding: set/allocated/freed by user.
605
     */
606
    void *extradata;
607
    int extradata_size;
608
    
609
    /* video only */
610
    /**
611
     * frames per sec multiplied by frame_rate_base.
612
     * for variable fps this is the precission, so if the timestamps 
613
     * can be specified in msec precssion then this is 1000*frame_rate_base
614
     * - encoding: MUST be set by user
615
     * - decoding: set by lavc. 0 or the frame_rate if available
616
     */
617
    int frame_rate;
618
    
619
    /**
620
     * width / height.
621
     * - encoding: MUST be set by user. 
622
     * - decoding: set by user if known, codec should override / dynamically change if needed
623
     */
624
    int width, height;
625
    
626
#define FF_ASPECT_SQUARE 1
627
#define FF_ASPECT_4_3_625 2
628
#define FF_ASPECT_4_3_525 3
629
#define FF_ASPECT_16_9_625 4
630
#define FF_ASPECT_16_9_525 5
631
#define FF_ASPECT_EXTENDED 15
632

    
633
    /**
634
     * the number of pictures in a group of pitures, or 0 for intra_only.
635
     * - encoding: set by user.
636
     * - decoding: unused
637
     */
638
    int gop_size;
639

    
640
    /**
641
     * pixel format, see PIX_FMT_xxx.
642
     * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
643
     *                    conversion is in order. This only works for
644
     *                    codecs with one supported pix_fmt, we should
645
     *                    do something for a generic case as well.
646
     * - decoding: set by lavc.
647
     */
648
    enum PixelFormat pix_fmt;
649
 
650
    /**
651
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
652
     * has to read frames at native frame rate.
653
     * - encoding: set by user.
654
     * - decoding: unused.
655
     */
656
    int rate_emu;
657
       
658
    /**
659
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
660
     * decoder to draw an horizontal band. It improve cache usage. Not
661
     * all codecs can do that. You must check the codec capabilities
662
     * before
663
     * - encoding: unused
664
     * - decoding: set by user.
665
     * @param height the height of the slice
666
     * @param y the y position of the slice
667
     * @param type 1->top field, 2->bottom field, 3->frame
668
     * @param offset offset into the AVFrame.data from which the slice should be read
669
     */
670
    void (*draw_horiz_band)(struct AVCodecContext *s,
671
                            const AVFrame *src, int offset[4],
672
                            int y, int type, int height);
673

    
674
    /* audio only */
675
    int sample_rate; ///< samples per sec 
676
    int channels;
677
    int sample_fmt;  ///< sample format, currenly unused 
678

    
679
    /* the following data should not be initialized */
680
    int frame_size;     ///< in samples, initialized when calling 'init' 
681
    int frame_number;   ///< audio or video frame number 
682
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
683
    
684
    /**
685
     * number of frames the decoded output will be delayed relative to 
686
     * the encoded input.
687
     * - encoding: set by lavc.
688
     * - decoding: unused
689
     */
690
    int delay;
691
    
692
    /* - encoding parameters */
693
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
694
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
695
    
696
    /**
697
     * minimum quantizer.
698
     * - encoding: set by user.
699
     * - decoding: unused
700
     */
701
    int qmin;
702

    
703
    /**
704
     * maximum quantizer.
705
     * - encoding: set by user.
706
     * - decoding: unused
707
     */
708
    int qmax;
709

    
710
    /**
711
     * maximum quantizer difference etween frames.
712
     * - encoding: set by user.
713
     * - decoding: unused
714
     */
715
    int max_qdiff;
716

    
717
    /**
718
     * maximum number of b frames between non b frames.
719
     * note: the output will be delayed by max_b_frames+1 relative to the input
720
     * - encoding: set by user.
721
     * - decoding: unused
722
     */
723
    int max_b_frames;
724

    
725
    /**
726
     * qscale factor between ip and b frames.
727
     * - encoding: set by user.
728
     * - decoding: unused
729
     */
730
    float b_quant_factor;
731
    
732
    /** obsolete FIXME remove */
733
    int rc_strategy;
734
    int b_frame_strategy;
735

    
736
    /**
737
     * hurry up amount.
738
     * - encoding: unused
739
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
740
     */
741
    int hurry_up;
742
    
743
    struct AVCodec *codec;
744
    
745
    void *priv_data;
746

    
747
    /* unused, FIXME remove*/
748
    int rtp_mode;
749
    
750
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
751
                            /* do it's best to deliver a chunk with size    */
752
                            /* below rtp_payload_size, the chunk will start */
753
                            /* with a start code on some codecs like H.263  */
754
                            /* This doesn't take account of any particular  */
755
                            /* headers inside the transmited RTP payload    */
756

    
757
    
758
    /* The RTP callcack: This function is called  */
759
    /* every time the encoder as a packet to send */
760
    /* Depends on the encoder if the data starts  */
761
    /* with a Start Code (it should) H.263 does   */
762
    void (*rtp_callback)(void *data, int size, int packet_number); 
763

    
764
    /* statistics, used for 2-pass encoding */
765
    int mv_bits;
766
    int header_bits;
767
    int i_tex_bits;
768
    int p_tex_bits;
769
    int i_count;
770
    int p_count;
771
    int skip_count;
772
    int misc_bits;
773
    
774
    /**
775
     * number of bits used for the previously encoded frame.
776
     * - encoding: set by lavc
777
     * - decoding: unused
778
     */
779
    int frame_bits;
780

    
781
    /**
782
     * private data of the user, can be used to carry app specific stuff.
783
     * - encoding: set by user
784
     * - decoding: set by user
785
     */
786
    void *opaque;
787

    
788
    char codec_name[32];
789
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
790
    enum CodecID codec_id; /* see CODEC_ID_xxx */
791
    
792
    /**
793
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
794
     * this is used to workaround some encoder bugs
795
     * - encoding: set by user, if not then the default based on codec_id will be used
796
     * - decoding: set by user, will be converted to upper case by lavc during init
797
     */
798
    unsigned int codec_tag;
799
    
800
    /**
801
     * workaround bugs in encoders which sometimes cannot be detected automatically.
802
     * - encoding: unused
803
     * - decoding: set by user
804
     */
805
    int workaround_bugs;
806
#define FF_BUG_AUTODETECT       1  ///< autodetection
807
#define FF_BUG_OLD_MSMPEG4      2
808
#define FF_BUG_XVID_ILACE       4
809
#define FF_BUG_UMP4             8
810
#define FF_BUG_NO_PADDING       16
811
#define FF_BUG_AC_VLC           0  ///< will be removed, libavcodec can now handle these non compliant files by default
812
#define FF_BUG_QPEL_CHROMA      64
813
#define FF_BUG_STD_QPEL         128
814
#define FF_BUG_QPEL_CHROMA2     256
815
#define FF_BUG_DIRECT_BLOCKSIZE 512
816
#define FF_BUG_EDGE             1024
817
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
818
        
819
    /**
820
     * luma single coeff elimination threshold.
821
     * - encoding: set by user
822
     * - decoding: unused
823
     */
824
    int luma_elim_threshold;
825
    
826
    /**
827
     * chroma single coeff elimination threshold.
828
     * - encoding: set by user
829
     * - decoding: unused
830
     */
831
    int chroma_elim_threshold;
832
    
833
    /**
834
     * strictly follow the std (MPEG4, ...).
835
     * - encoding: set by user
836
     * - decoding: unused
837
     */
838
    int strict_std_compliance;
839
    
840
    /**
841
     * qscale offset between ip and b frames.
842
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
843
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
844
     * - encoding: set by user.
845
     * - decoding: unused
846
     */
847
    float b_quant_offset;
848
    
849
    /**
850
     * error resilience higher values will detect more errors but may missdetect
851
     * some more or less valid parts as errors.
852
     * - encoding: unused
853
     * - decoding: set by user
854
     */
855
    int error_resilience;
856
#define FF_ER_CAREFULL        1
857
#define FF_ER_COMPLIANT       2
858
#define FF_ER_AGGRESSIVE      3
859
#define FF_ER_VERY_AGGRESSIVE 4
860
    
861
    /**
862
     * called at the beginning of each frame to get a buffer for it.
863
     * if pic.reference is set then the frame will be read later by lavc
864
     * width and height should be rounded up to the next multiple of 16
865
     * - encoding: unused
866
     * - decoding: set by lavc, user can override
867
     */
868
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
869
    
870
    /**
871
     * called to release buffers which where allocated with get_buffer.
872
     * a released buffer can be reused in get_buffer()
873
     * pic.data[*] must be set to NULL
874
     * - encoding: unused
875
     * - decoding: set by lavc, user can override
876
     */
877
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
878

    
879
    /**
880
     * is 1 if the decoded stream contains b frames, 0 otherwise.
881
     * - encoding: unused
882
     * - decoding: set by lavc
883
     */
884
    int has_b_frames;
885
    
886
    int block_align; ///< used by some WAV based audio codecs
887
    
888
    int parse_only; /* - decoding only: if true, only parsing is done
889
                       (function avcodec_parse_frame()). The frame
890
                       data is returned. Only MPEG codecs support this now. */
891
    
892
    /**
893
     * 0-> h263 quant 1-> mpeg quant.
894
     * - encoding: set by user.
895
     * - decoding: unused
896
     */
897
    int mpeg_quant;
898
    
899
    /**
900
     * pass1 encoding statistics output buffer.
901
     * - encoding: set by lavc
902
     * - decoding: unused
903
     */
904
    char *stats_out;
905
    
906
    /**
907
     * pass2 encoding statistics input buffer.
908
     * concatenated stuff from stats_out of pass1 should be placed here
909
     * - encoding: allocated/set/freed by user
910
     * - decoding: unused
911
     */
912
    char *stats_in;
913
    
914
    /**
915
     * ratecontrol qmin qmax limiting method.
916
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
917
     * - encoding: set by user.
918
     * - decoding: unused
919
     */
920
    float rc_qsquish;
921

    
922
    float rc_qmod_amp;
923
    int rc_qmod_freq;
924
    
925
    /**
926
     * ratecontrol override, see RcOverride.
927
     * - encoding: allocated/set/freed by user.
928
     * - decoding: unused
929
     */
930
    RcOverride *rc_override;
931
    int rc_override_count;
932
    
933
    /**
934
     * rate control equation.
935
     * - encoding: set by user
936
     * - decoding: unused
937
     */
938
    char *rc_eq;
939
    
940
    /**
941
     * maximum bitrate.
942
     * - encoding: set by user.
943
     * - decoding: unused
944
     */
945
    int rc_max_rate;
946
    
947
    /**
948
     * minimum bitrate.
949
     * - encoding: set by user.
950
     * - decoding: unused
951
     */
952
    int rc_min_rate;
953
    
954
    /**
955
     * decoder bitstream buffer size.
956
     * - encoding: set by user.
957
     * - decoding: unused
958
     */
959
    int rc_buffer_size;
960
    float rc_buffer_aggressivity;
961

    
962
    /**
963
     * qscale factor between p and i frames.
964
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
965
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
966
     * - encoding: set by user.
967
     * - decoding: unused
968
     */
969
    float i_quant_factor;
970
    
971
    /**
972
     * qscale offset between p and i frames.
973
     * - encoding: set by user.
974
     * - decoding: unused
975
     */
976
    float i_quant_offset;
977
    
978
    /**
979
     * initial complexity for pass1 ratecontrol.
980
     * - encoding: set by user.
981
     * - decoding: unused
982
     */
983
    float rc_initial_cplx;
984

    
985
    /**
986
     * dct algorithm, see FF_DCT_* below.
987
     * - encoding: set by user
988
     * - decoding: unused
989
     */
990
    int dct_algo;
991
#define FF_DCT_AUTO    0
992
#define FF_DCT_FASTINT 1
993
#define FF_DCT_INT     2
994
#define FF_DCT_MMX     3
995
#define FF_DCT_MLIB    4
996
#define FF_DCT_ALTIVEC 5
997
#define FF_DCT_FAAN    6
998
    
999
    /**
1000
     * luminance masking (0-> disabled).
1001
     * - encoding: set by user
1002
     * - decoding: unused
1003
     */
1004
    float lumi_masking;
1005
    
1006
    /**
1007
     * temporary complexity masking (0-> disabled).
1008
     * - encoding: set by user
1009
     * - decoding: unused
1010
     */
1011
    float temporal_cplx_masking;
1012
    
1013
    /**
1014
     * spatial complexity masking (0-> disabled).
1015
     * - encoding: set by user
1016
     * - decoding: unused
1017
     */
1018
    float spatial_cplx_masking;
1019
    
1020
    /**
1021
     * p block masking (0-> disabled).
1022
     * - encoding: set by user
1023
     * - decoding: unused
1024
     */
1025
    float p_masking;
1026

    
1027
    /**
1028
     * darkness masking (0-> disabled).
1029
     * - encoding: set by user
1030
     * - decoding: unused
1031
     */
1032
    float dark_masking;
1033
    
1034
    
1035
    /* for binary compatibility */
1036
    int unused;
1037
    
1038
    /**
1039
     * idct algorithm, see FF_IDCT_* below.
1040
     * - encoding: set by user
1041
     * - decoding: set by user
1042
     */
1043
    int idct_algo;
1044
#define FF_IDCT_AUTO         0
1045
#define FF_IDCT_INT          1
1046
#define FF_IDCT_SIMPLE       2
1047
#define FF_IDCT_SIMPLEMMX    3
1048
#define FF_IDCT_LIBMPEG2MMX  4
1049
#define FF_IDCT_PS2          5
1050
#define FF_IDCT_MLIB         6
1051
#define FF_IDCT_ARM          7
1052
#define FF_IDCT_ALTIVEC      8
1053
#define FF_IDCT_SH4          9
1054
#define FF_IDCT_SIMPLEARM    10
1055

    
1056
    /**
1057
     * slice count.
1058
     * - encoding: set by lavc
1059
     * - decoding: set by user (or 0)
1060
     */
1061
    int slice_count;
1062
    /**
1063
     * slice offsets in the frame in bytes.
1064
     * - encoding: set/allocated by lavc
1065
     * - decoding: set/allocated by user (or NULL)
1066
     */
1067
    int *slice_offset;
1068

    
1069
    /**
1070
     * error concealment flags.
1071
     * - encoding: unused
1072
     * - decoding: set by user
1073
     */
1074
    int error_concealment;
1075
#define FF_EC_GUESS_MVS   1
1076
#define FF_EC_DEBLOCK     2
1077

    
1078
    /**
1079
     * dsp_mask could be add used to disable unwanted CPU features
1080
     * CPU features (i.e. MMX, SSE. ...)
1081
     *
1082
     * with FORCE flag you may instead enable given CPU features
1083
     * (Dangerous: usable in case of misdetection, improper usage however will
1084
     * result into program crash)
1085
     */
1086
    unsigned dsp_mask;
1087
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
1088
    /* lower 16 bits - CPU features */
1089
#ifdef HAVE_MMX
1090
#define FF_MM_MMX        0x0001 /* standard MMX */
1091
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
1092
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
1093
#define FF_MM_SSE        0x0008 /* SSE functions */
1094
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
1095
#endif /* HAVE_MMX */
1096

    
1097
    /**
1098
     * bits per sample/pixel from the demuxer (needed for huffyuv).
1099
     * - encoding: set by lavc
1100
     * - decoding: set by user
1101
     */
1102
     int bits_per_sample;
1103
    
1104
    /**
1105
     * prediction method (needed for huffyuv).
1106
     * - encoding: set by user
1107
     * - decoding: unused
1108
     */
1109
     int prediction_method;
1110
#define FF_PRED_LEFT   0
1111
#define FF_PRED_PLANE  1
1112
#define FF_PRED_MEDIAN 2
1113
    
1114
    /**
1115
     * sample aspect ratio (0 if unknown).
1116
     * numerator and denominator must be relative prime and smaller then 256 for some video standards
1117
     * - encoding: set by user.
1118
     * - decoding: set by lavc.
1119
     */
1120
    AVRational sample_aspect_ratio;
1121

    
1122
    /**
1123
     * the picture in the bitstream.
1124
     * - encoding: set by lavc
1125
     * - decoding: set by lavc
1126
     */
1127
    AVFrame *coded_frame;
1128

    
1129
    /**
1130
     * debug.
1131
     * - encoding: set by user.
1132
     * - decoding: set by user.
1133
     */
1134
    int debug;
1135
#define FF_DEBUG_PICT_INFO 1
1136
#define FF_DEBUG_RC        2
1137
#define FF_DEBUG_BITSTREAM 4
1138
#define FF_DEBUG_MB_TYPE   8
1139
#define FF_DEBUG_QP        16
1140
#define FF_DEBUG_MV        32
1141
//#define FF_DEBUG_VIS_MV    0x00000040
1142
#define FF_DEBUG_SKIP      0x00000080
1143
#define FF_DEBUG_STARTCODE 0x00000100
1144
#define FF_DEBUG_PTS       0x00000200
1145
#define FF_DEBUG_ER        0x00000400
1146
#define FF_DEBUG_MMCO      0x00000800
1147
#define FF_DEBUG_BUGS      0x00001000
1148
#define FF_DEBUG_VIS_QP    0x00002000
1149
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
1150
    
1151
    /**
1152
     * debug.
1153
     * - encoding: set by user.
1154
     * - decoding: set by user.
1155
     */
1156
    int debug_mv;
1157
#define FF_DEBUG_VIS_MV_P_FOR  0x00000001 //visualize forward predicted MVs of P frames
1158
#define FF_DEBUG_VIS_MV_B_FOR  0x00000002 //visualize forward predicted MVs of B frames
1159
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1160

    
1161
    /**
1162
     * error.
1163
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1164
     * - decoding: unused
1165
     */
1166
    uint64_t error[4];
1167
    
1168
    /**
1169
     * minimum MB quantizer.
1170
     * - encoding: set by user.
1171
     * - decoding: unused
1172
     */
1173
    int mb_qmin;
1174

    
1175
    /**
1176
     * maximum MB quantizer.
1177
     * - encoding: set by user.
1178
     * - decoding: unused
1179
     */
1180
    int mb_qmax;
1181
    
1182
    /**
1183
     * motion estimation compare function.
1184
     * - encoding: set by user.
1185
     * - decoding: unused
1186
     */
1187
    int me_cmp;
1188
    /**
1189
     * subpixel motion estimation compare function.
1190
     * - encoding: set by user.
1191
     * - decoding: unused
1192
     */
1193
    int me_sub_cmp;
1194
    /**
1195
     * macroblock compare function (not supported yet).
1196
     * - encoding: set by user.
1197
     * - decoding: unused
1198
     */
1199
    int mb_cmp;
1200
    /**
1201
     * interlaced dct compare function
1202
     * - encoding: set by user.
1203
     * - decoding: unused
1204
     */
1205
    int ildct_cmp;
1206
#define FF_CMP_SAD  0
1207
#define FF_CMP_SSE  1
1208
#define FF_CMP_SATD 2
1209
#define FF_CMP_DCT  3
1210
#define FF_CMP_PSNR 4
1211
#define FF_CMP_BIT  5
1212
#define FF_CMP_RD   6
1213
#define FF_CMP_ZERO 7
1214
#define FF_CMP_VSAD 8
1215
#define FF_CMP_VSSE 9
1216
#define FF_CMP_CHROMA 256
1217
    
1218
    /**
1219
     * ME diamond size & shape.
1220
     * - encoding: set by user.
1221
     * - decoding: unused
1222
     */
1223
    int dia_size;
1224

    
1225
    /**
1226
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1227
     * - encoding: set by user.
1228
     * - decoding: unused
1229
     */
1230
    int last_predictor_count;
1231

    
1232
    /**
1233
     * pre pass for motion estimation.
1234
     * - encoding: set by user.
1235
     * - decoding: unused
1236
     */
1237
    int pre_me;
1238

    
1239
    /**
1240
     * motion estimation pre pass compare function.
1241
     * - encoding: set by user.
1242
     * - decoding: unused
1243
     */
1244
    int me_pre_cmp;
1245

    
1246
    /**
1247
     * ME pre pass diamond size & shape.
1248
     * - encoding: set by user.
1249
     * - decoding: unused
1250
     */
1251
    int pre_dia_size;
1252

    
1253
    /**
1254
     * subpel ME quality.
1255
     * - encoding: set by user.
1256
     * - decoding: unused
1257
     */
1258
    int me_subpel_quality;
1259

    
1260
    /**
1261
     * callback to negotiate the pixelFormat.
1262
     * @param fmt is the list of formats which are supported by the codec,
1263
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1264
     * the first is allways the native one
1265
     * @return the choosen format
1266
     * - encoding: unused
1267
     * - decoding: set by user, if not set then the native format will always be choosen
1268
     */
1269
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1270

    
1271
    /**
1272
     * DTG active format information (additionnal aspect ratio
1273
     * information only used in DVB MPEG2 transport streams). 0 if
1274
     * not set.
1275
     * 
1276
     * - encoding: unused.
1277
     * - decoding: set by decoder 
1278
     */
1279
    int dtg_active_format;
1280
#define FF_DTG_AFD_SAME         8
1281
#define FF_DTG_AFD_4_3          9
1282
#define FF_DTG_AFD_16_9         10
1283
#define FF_DTG_AFD_14_9         11
1284
#define FF_DTG_AFD_4_3_SP_14_9  13
1285
#define FF_DTG_AFD_16_9_SP_14_9 14
1286
#define FF_DTG_AFD_SP_4_3       15
1287

    
1288
    /**
1289
     * Maximum motion estimation search range in subpel units.
1290
     * if 0 then no limit
1291
     * 
1292
     * - encoding: set by user.
1293
     * - decoding: unused.
1294
     */
1295
    int me_range;
1296

    
1297
    /**
1298
     * frame_rate_base.
1299
     * for variable fps this is 1
1300
     * - encoding: set by user.
1301
     * - decoding: set by lavc.
1302
     * @todo move this after frame_rate
1303
     */
1304

    
1305
    int frame_rate_base;
1306
    /**
1307
     * intra quantizer bias.
1308
     * - encoding: set by user.
1309
     * - decoding: unused
1310
     */
1311
    int intra_quant_bias;
1312
#define FF_DEFAULT_QUANT_BIAS 999999
1313
    
1314
    /**
1315
     * inter quantizer bias.
1316
     * - encoding: set by user.
1317
     * - decoding: unused
1318
     */
1319
    int inter_quant_bias;
1320

    
1321
    /**
1322
     * color table ID.
1323
     * - encoding: unused.
1324
     * - decoding: which clrtable should be used for 8bit RGB images
1325
     *             table have to be stored somewhere FIXME
1326
     */
1327
    int color_table_id;
1328
    
1329
    /**
1330
     * internal_buffer count. 
1331
     * Dont touch, used by lavc default_get_buffer()
1332
     */
1333
    int internal_buffer_count;
1334
    
1335
    /**
1336
     * internal_buffers. 
1337
     * Dont touch, used by lavc default_get_buffer()
1338
     */
1339
    void *internal_buffer;
1340

    
1341
#define FF_LAMBDA_SHIFT 7
1342
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1343
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1344
#define FF_LAMBDA_MAX (256*128-1)
1345

    
1346
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1347
    /**
1348
     * global quality for codecs which cannot change it per frame.
1349
     * this should be proportional to MPEG1/2/4 qscale.
1350
     * - encoding: set by user.
1351
     * - decoding: unused
1352
     */
1353
    int global_quality;
1354
    
1355
#define FF_CODER_TYPE_VLC   0
1356
#define FF_CODER_TYPE_AC    1
1357
    /**
1358
     * coder type
1359
     * - encoding: set by user.
1360
     * - decoding: unused
1361
     */
1362
    int coder_type;
1363

    
1364
    /**
1365
     * context model
1366
     * - encoding: set by user.
1367
     * - decoding: unused
1368
     */
1369
    int context_model;
1370
    
1371
    /**
1372
     * slice flags
1373
     * - encoding: unused
1374
     * - decoding: set by user.
1375
     */
1376
    int slice_flags;
1377
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1378
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1379
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1380

    
1381
    /**
1382
     * XVideo Motion Acceleration
1383
     * - encoding: forbidden
1384
     * - decoding: set by decoder
1385
     */
1386
    int xvmc_acceleration;
1387
    
1388
    /**
1389
     * macroblock decision mode
1390
     * - encoding: set by user.
1391
     * - decoding: unused
1392
     */
1393
    int mb_decision;
1394
#define FF_MB_DECISION_SIMPLE 0        ///< uses mb_cmp
1395
#define FF_MB_DECISION_BITS   1        ///< chooses the one which needs the fewest bits
1396
#define FF_MB_DECISION_RD     2        ///< rate distoration
1397

    
1398
    /**
1399
     * custom intra quantization matrix
1400
     * - encoding: set by user, can be NULL
1401
     * - decoding: set by lavc
1402
     */
1403
    uint16_t *intra_matrix;
1404

    
1405
    /**
1406
     * custom inter quantization matrix
1407
     * - encoding: set by user, can be NULL
1408
     * - decoding: set by lavc
1409
     */
1410
    uint16_t *inter_matrix;
1411
    
1412
    /**
1413
     * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1414
     * this is used to workaround some encoder bugs
1415
     * - encoding: unused
1416
     * - decoding: set by user, will be converted to upper case by lavc during init
1417
     */
1418
    unsigned int stream_codec_tag;
1419

    
1420
    /**
1421
     * scene change detection threshold.
1422
     * 0 is default, larger means fewer detected scene changes
1423
     * - encoding: set by user.
1424
     * - decoding: unused
1425
     */
1426
    int scenechange_threshold;
1427

    
1428
    /**
1429
     * minimum lagrange multipler
1430
     * - encoding: set by user.
1431
     * - decoding: unused
1432
     */
1433
    int lmin;
1434

    
1435
    /**
1436
     * maximum lagrange multipler
1437
     * - encoding: set by user.
1438
     * - decoding: unused
1439
     */
1440
    int lmax;
1441

    
1442
    /**
1443
     * Palette control structure
1444
     * - encoding: ??? (no palette-enabled encoder yet)
1445
     * - decoding: set by user.
1446
     */
1447
    struct AVPaletteControl *palctrl;
1448

    
1449
    /**
1450
     * noise reduction strength
1451
     * - encoding: set by user.
1452
     * - decoding: unused
1453
     */
1454
    int noise_reduction;
1455
    
1456
    /**
1457
     * called at the beginning of a frame to get cr buffer for it.
1458
     * buffer type (size, hints) must be the same. lavc won't check it.
1459
     * lavc will pass previous buffer in pic, function should return
1460
     * same buffer or new buffer with old frame "painted" into it.
1461
     * if pic.data[0] == NULL must behave like get_buffer().
1462
     * - encoding: unused
1463
     * - decoding: set by lavc, user can override
1464
     */
1465
    int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1466

    
1467
    /**
1468
     * number of bits which should be loaded into the rc buffer before decoding starts
1469
     * - encoding: set by user.
1470
     * - decoding: unused
1471
     */
1472
    int rc_initial_buffer_occupancy;
1473

    
1474
    /**
1475
     *
1476
     * - encoding: set by user.
1477
     * - decoding: unused
1478
     */
1479
    int inter_threshold;
1480

    
1481
    /**
1482
     * CODEC_FLAG2_*.
1483
     * - encoding: set by user.
1484
     * - decoding: set by user.
1485
     */
1486
    int flags2;
1487

    
1488
    /**
1489
     * simulates errors in the bitstream to test error concealment.
1490
     * - encoding: set by user.
1491
     * - decoding: unused.
1492
     */
1493
    int error_rate;
1494
    
1495
    /**
1496
     * MP3 antialias algorithm, see FF_AA_* below.
1497
     * - encoding: unused
1498
     * - decoding: set by user
1499
     */
1500
    int antialias_algo;
1501
#define FF_AA_AUTO    0
1502
#define FF_AA_FASTINT 1 //not implemented yet
1503
#define FF_AA_INT     2
1504
#define FF_AA_FLOAT   3
1505
    /**
1506
     * Quantizer noise shaping.
1507
     * - encoding: set by user
1508
     * - decoding: unused
1509
     */
1510
    int quantizer_noise_shaping;
1511
} AVCodecContext;
1512

    
1513

    
1514
/**
1515
 * AVOption.
1516
 */
1517
typedef struct AVOption {
1518
    /** options' name */
1519
    const char *name; /* if name is NULL, it indicates a link to next */
1520
    /** short English text help or const struct AVOption* subpointer */
1521
    const char *help; //        const struct AVOption* sub;
1522
    /** offset to context structure where the parsed value should be stored */
1523
    int offset;
1524
    /** options' type */
1525
    int type;
1526
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1527
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1528
#define FF_OPT_TYPE_INT 3       ///< integer
1529
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1530
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1531
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1532
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1533
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1534
    /** min value  (min == max   ->  no limits) */
1535
    double min;
1536
    /** maximum value for double/int */
1537
    double max;
1538
    /** default boo [0,1]l/double/int value */
1539
    double defval;
1540
    /**
1541
     * default string value (with optional semicolon delimited extra option-list
1542
     * i.e.   option1;option2;option3
1543
     * defval might select other then first argument as default
1544
     */
1545
    const char *defstr;
1546
#define FF_OPT_MAX_DEPTH 10
1547
} AVOption;
1548

    
1549
/**
1550
 * Parse option(s) and sets fields in passed structure
1551
 * @param strct        structure where the parsed results will be written
1552
 * @param list  list with AVOptions
1553
 * @param opts        string with options for parsing
1554
 */
1555
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1556

    
1557

    
1558
/**
1559
 * AVCodec.
1560
 */
1561
typedef struct AVCodec {
1562
    const char *name;
1563
    enum CodecType type;
1564
    int id;
1565
    int priv_data_size;
1566
    int (*init)(AVCodecContext *);
1567
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1568
    int (*close)(AVCodecContext *);
1569
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1570
                  uint8_t *buf, int buf_size);
1571
    int capabilities;
1572
    const AVOption *options;
1573
    struct AVCodec *next;
1574
    void (*flush)(AVCodecContext *);
1575
} AVCodec;
1576

    
1577
/**
1578
 * four components are given, that's all.
1579
 * the last component is alpha
1580
 */
1581
typedef struct AVPicture {
1582
    uint8_t *data[4];
1583
    int linesize[4];       ///< number of bytes per line
1584
} AVPicture;
1585

    
1586
/**
1587
 * AVPaletteControl
1588
 * This structure defines a method for communicating palette changes
1589
 * between and demuxer and a decoder.
1590
 */
1591
#define AVPALETTE_SIZE 1024
1592
#define AVPALETTE_COUNT 256
1593
typedef struct AVPaletteControl {
1594

    
1595
    /* demuxer sets this to 1 to indicate the palette has changed;
1596
     * decoder resets to 0 */
1597
    int palette_changed;
1598

    
1599
    /* 4-byte ARGB palette entries, stored in native byte order; note that
1600
     * the individual palette components should be on a 8-bit scale; if
1601
     * the palette data comes from a IBM VGA native format, the component
1602
     * data is probably 6 bits in size and needs to be scaled */
1603
    unsigned int palette[AVPALETTE_COUNT];
1604

    
1605
} AVPaletteControl;
1606

    
1607
extern AVCodec ac3_encoder;
1608
extern AVCodec mp2_encoder;
1609
extern AVCodec mp3lame_encoder;
1610
extern AVCodec oggvorbis_encoder;
1611
extern AVCodec faac_encoder;
1612
extern AVCodec mpeg1video_encoder;
1613
extern AVCodec mpeg2video_encoder;
1614
extern AVCodec h263_encoder;
1615
extern AVCodec h263p_encoder;
1616
extern AVCodec flv_encoder;
1617
extern AVCodec rv10_encoder;
1618
extern AVCodec rv20_encoder;
1619
extern AVCodec mjpeg_encoder;
1620
extern AVCodec ljpeg_encoder;
1621
extern AVCodec mpeg4_encoder;
1622
extern AVCodec msmpeg4v1_encoder;
1623
extern AVCodec msmpeg4v2_encoder;
1624
extern AVCodec msmpeg4v3_encoder;
1625
extern AVCodec wmv1_encoder;
1626
extern AVCodec wmv2_encoder;
1627
extern AVCodec huffyuv_encoder;
1628
extern AVCodec h264_encoder;
1629
extern AVCodec asv1_encoder;
1630
extern AVCodec asv2_encoder;
1631
extern AVCodec vcr1_encoder;
1632
extern AVCodec ffv1_encoder;
1633
extern AVCodec mdec_encoder;
1634
extern AVCodec zlib_encoder;
1635

    
1636
extern AVCodec h263_decoder;
1637
extern AVCodec mpeg4_decoder;
1638
extern AVCodec msmpeg4v1_decoder;
1639
extern AVCodec msmpeg4v2_decoder;
1640
extern AVCodec msmpeg4v3_decoder;
1641
extern AVCodec wmv1_decoder;
1642
extern AVCodec wmv2_decoder;
1643
extern AVCodec mpeg1video_decoder;
1644
extern AVCodec mpeg2video_decoder;
1645
extern AVCodec mpegvideo_decoder;
1646
extern AVCodec mpeg_xvmc_decoder;
1647
extern AVCodec h263i_decoder;
1648
extern AVCodec flv_decoder;
1649
extern AVCodec rv10_decoder;
1650
extern AVCodec rv20_decoder;
1651
extern AVCodec svq1_decoder;
1652
extern AVCodec svq3_decoder;
1653
extern AVCodec dvvideo_decoder;
1654
extern AVCodec wmav1_decoder;
1655
extern AVCodec wmav2_decoder;
1656
extern AVCodec mjpeg_decoder;
1657
extern AVCodec mjpegb_decoder;
1658
extern AVCodec sp5x_decoder;
1659
extern AVCodec mp2_decoder;
1660
extern AVCodec mp3_decoder;
1661
extern AVCodec mace3_decoder;
1662
extern AVCodec mace6_decoder;
1663
extern AVCodec huffyuv_decoder;
1664
extern AVCodec oggvorbis_decoder;
1665
extern AVCodec cyuv_decoder;
1666
extern AVCodec h264_decoder;
1667
extern AVCodec indeo3_decoder;
1668
extern AVCodec vp3_decoder;
1669
extern AVCodec theora_decoder;
1670
extern AVCodec amr_nb_decoder;
1671
extern AVCodec amr_nb_encoder;
1672
extern AVCodec amr_wb_encoder;
1673
extern AVCodec amr_wb_decoder;
1674
extern AVCodec aac_decoder;
1675
extern AVCodec mpeg4aac_decoder;
1676
extern AVCodec asv1_decoder;
1677
extern AVCodec asv2_decoder;
1678
extern AVCodec vcr1_decoder;
1679
extern AVCodec cljr_decoder;
1680
extern AVCodec ffv1_decoder;
1681
extern AVCodec fourxm_decoder;
1682
extern AVCodec mdec_decoder;
1683
extern AVCodec roq_decoder;
1684
extern AVCodec interplay_video_decoder;
1685
extern AVCodec xan_wc3_decoder;
1686
extern AVCodec rpza_decoder;
1687
extern AVCodec cinepak_decoder;
1688
extern AVCodec msrle_decoder;
1689
extern AVCodec msvideo1_decoder;
1690
extern AVCodec vqa_decoder;
1691
extern AVCodec idcin_decoder;
1692
extern AVCodec eightbps_decoder;
1693
extern AVCodec smc_decoder;
1694
extern AVCodec flic_decoder;
1695
extern AVCodec vmdvideo_decoder;
1696
extern AVCodec vmdaudio_decoder;
1697
extern AVCodec truemotion1_decoder;
1698
extern AVCodec mszh_decoder;
1699
extern AVCodec zlib_decoder;
1700
extern AVCodec ra_144_decoder;
1701
extern AVCodec ra_288_decoder;
1702
extern AVCodec roq_dpcm_decoder;
1703
extern AVCodec interplay_dpcm_decoder;
1704
extern AVCodec xan_dpcm_decoder;
1705
extern AVCodec qtrle_decoder;
1706

    
1707
/* pcm codecs */
1708
#define PCM_CODEC(id, name) \
1709
extern AVCodec name ## _decoder; \
1710
extern AVCodec name ## _encoder
1711

    
1712
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1713
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1714
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1715
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1716
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1717
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1718
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1719
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1720

    
1721
/* adpcm codecs */
1722

    
1723
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1724
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1725
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1726
PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1727
PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1728
PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1729
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1730
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1731
PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1732
PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1733
PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1734
PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1735

    
1736
#undef PCM_CODEC
1737

    
1738
/* dummy raw video codec */
1739
extern AVCodec rawvideo_encoder;
1740
extern AVCodec rawvideo_decoder;
1741

    
1742
/* the following codecs use external GPL libs */
1743
extern AVCodec ac3_decoder;
1744

    
1745
/* resample.c */
1746

    
1747
struct ReSampleContext;
1748

    
1749
typedef struct ReSampleContext ReSampleContext;
1750

    
1751
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1752
                                     int output_rate, int input_rate);
1753
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1754
void audio_resample_close(ReSampleContext *s);
1755

    
1756
/* YUV420 format is assumed ! */
1757

    
1758
struct ImgReSampleContext;
1759

    
1760
typedef struct ImgReSampleContext ImgReSampleContext;
1761

    
1762
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1763
                                      int input_width, int input_height);
1764

    
1765
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1766
                                      int iwidth, int iheight,
1767
                                      int topBand, int bottomBand,
1768
                                      int leftBand, int rightBand);
1769

    
1770
void img_resample(ImgReSampleContext *s, 
1771
                  AVPicture *output, const AVPicture *input);
1772

    
1773
void img_resample_close(ImgReSampleContext *s);
1774

    
1775
/**
1776
 * Allocate memory for a picture.  Call avpicture_free to free it.
1777
 *
1778
 * @param picture the picture to be filled in.
1779
 * @param pix_fmt the format of the picture.
1780
 * @param width the width of the picture.
1781
 * @param height the height of the picture.
1782
 * @return 0 if successful, -1 if not.
1783
 */
1784
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1785

    
1786
/* Free a picture previously allocated by avpicture_alloc. */
1787
void avpicture_free(AVPicture *picture);
1788

    
1789
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1790
                   int pix_fmt, int width, int height);
1791
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1792
                     unsigned char *dest, int dest_size);
1793
int avpicture_get_size(int pix_fmt, int width, int height);
1794
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1795
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1796
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1797

    
1798
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1799
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1800
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1801
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1802
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1803
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1804

    
1805
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1806
                             int has_alpha);
1807
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1808
                              int has_alpha, int *loss_ptr);
1809

    
1810
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1811
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1812
int img_get_alpha_info(const AVPicture *src,
1813
                       int pix_fmt, int width, int height);
1814

    
1815
/* convert among pixel formats */
1816
int img_convert(AVPicture *dst, int dst_pix_fmt,
1817
                const AVPicture *src, int pix_fmt, 
1818
                int width, int height);
1819

    
1820
/* deinterlace a picture */
1821
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1822
                          int pix_fmt, int width, int height);
1823

    
1824
/* external high level API */
1825

    
1826
extern AVCodec *first_avcodec;
1827

    
1828
/* returns LIBAVCODEC_VERSION_INT constant */
1829
unsigned avcodec_version(void);
1830
/* returns LIBAVCODEC_BUILD constant */
1831
unsigned avcodec_build(void);
1832
void avcodec_init(void);
1833

    
1834
void register_avcodec(AVCodec *format);
1835
AVCodec *avcodec_find_encoder(enum CodecID id);
1836
AVCodec *avcodec_find_encoder_by_name(const char *name);
1837
AVCodec *avcodec_find_decoder(enum CodecID id);
1838
AVCodec *avcodec_find_decoder_by_name(const char *name);
1839
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1840

    
1841
void avcodec_get_context_defaults(AVCodecContext *s);
1842
AVCodecContext *avcodec_alloc_context(void);
1843
AVFrame *avcodec_alloc_frame(void);
1844

    
1845
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1846
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1847
void avcodec_default_free_buffers(AVCodecContext *s);
1848

    
1849
/**
1850
 * opens / inits the AVCodecContext.
1851
 * not thread save!
1852
 */
1853
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1854

    
1855
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1856
                         int *frame_size_ptr,
1857
                         uint8_t *buf, int buf_size);
1858
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1859
                         int *got_picture_ptr,
1860
                         uint8_t *buf, int buf_size);
1861
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1862
                        int *data_size_ptr,
1863
                        uint8_t *buf, int buf_size);
1864
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1865
                         const short *samples);
1866
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1867
                         const AVFrame *pict);
1868

    
1869
int avcodec_close(AVCodecContext *avctx);
1870

    
1871
void avcodec_register_all(void);
1872

    
1873
void avcodec_flush_buffers(AVCodecContext *avctx);
1874

    
1875
/* misc usefull functions */
1876

    
1877
/**
1878
 * returns a single letter to describe the picture type
1879
 */
1880
char av_get_pict_type_char(int pict_type);
1881

    
1882
/**
1883
 * reduce a fraction.
1884
 * this is usefull for framerate calculations
1885
 * @param max the maximum allowed for dst_nom & dst_den
1886
 * @return 1 if exact, 0 otherwise
1887
 */
1888
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1889

    
1890
/**
1891
 * rescale a 64bit integer.
1892
 * a simple a*b/c isnt possible as it can overflow
1893
 */
1894
int64_t av_rescale(int64_t a, int b, int c);
1895

    
1896

    
1897
/**
1898
 * Interface for 0.5.0 version
1899
 *
1900
 * do not even think about it's usage for this moment
1901
 */
1902

    
1903
typedef struct {
1904
    /// compressed size used from given memory buffer
1905
    int size;
1906
    /// I/P/B frame type
1907
    int frame_type;
1908
} avc_enc_result_t;
1909

    
1910
/**
1911
 * Commands
1912
 * order can't be changed - once it was defined
1913
 */
1914
typedef enum {
1915
    // general commands
1916
    AVC_OPEN_BY_NAME = 0xACA000,
1917
    AVC_OPEN_BY_CODEC_ID,
1918
    AVC_OPEN_BY_FOURCC,
1919
    AVC_CLOSE,
1920

    
1921
    AVC_FLUSH,
1922
    // pin - struct { uint8_t* src, uint_t src_size }
1923
    // pout - struct { AVPicture* img, consumed_bytes,
1924
    AVC_DECODE,
1925
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1926
    // pout - uint_t used_from_dest_size
1927
    AVC_ENCODE, 
1928

    
1929
    // query/get video commands
1930
    AVC_GET_VERSION = 0xACB000,
1931
    AVC_GET_WIDTH,
1932
    AVC_GET_HEIGHT,
1933
    AVC_GET_DELAY,
1934
    AVC_GET_QUANT_TABLE,
1935
    // ...
1936

    
1937
    // query/get audio commands
1938
    AVC_GET_FRAME_SIZE = 0xABC000,
1939

    
1940
    // maybe define some simple structure which
1941
    // might be passed to the user - but they can't
1942
    // contain any codec specific parts and these
1943
    // calls are usualy necessary only few times
1944

    
1945
    // set video commands
1946
    AVC_SET_WIDTH = 0xACD000,
1947
    AVC_SET_HEIGHT,
1948

    
1949
    // set video encoding commands
1950
    AVC_SET_FRAME_RATE = 0xACD800,
1951
    AVC_SET_QUALITY,
1952
    AVC_SET_HURRY_UP,
1953

    
1954
    // set audio commands
1955
    AVC_SET_SAMPLE_RATE = 0xACE000,
1956
    AVC_SET_CHANNELS,
1957

    
1958
} avc_cmd_t;
1959

    
1960
/**
1961
 * \param handle  allocated private structure by libavcodec
1962
 *                for initialization pass NULL - will be returned pout
1963
 *                user is supposed to know nothing about its structure
1964
 * \param cmd     type of operation to be performed
1965
 * \param pint    input parameter
1966
 * \param pout    output parameter
1967
 *
1968
 * \returns  command status - eventually for query command it might return
1969
 * integer resulting value
1970
 */
1971
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1972

    
1973
/* frame parsing */
1974
typedef struct AVCodecParserContext {
1975
    void *priv_data;
1976
    struct AVCodecParser *parser;
1977
    int64_t frame_offset; /* offset of the current frame */
1978
    int64_t cur_offset; /* current offset 
1979
                           (incremented by each av_parser_parse()) */
1980
    int64_t last_frame_offset; /* offset of the last frame */
1981
    /* video info */
1982
    int pict_type; /* XXX: put it back in AVCodecContext */
1983
    int repeat_pict; /* XXX: put it back in AVCodecContext */
1984
    int64_t pts;     /* pts of the current frame */
1985
    int64_t dts;     /* dts of the current frame */
1986

    
1987
    /* private data */
1988
    int64_t last_pts;
1989
    int64_t last_dts;
1990

    
1991
#define AV_PARSER_PTS_NB 4
1992
    int cur_frame_start_index;
1993
    int64_t cur_frame_offset[AV_PARSER_PTS_NB];
1994
    int64_t cur_frame_pts[AV_PARSER_PTS_NB];
1995
    int64_t cur_frame_dts[AV_PARSER_PTS_NB];
1996
} AVCodecParserContext;
1997

    
1998
typedef struct AVCodecParser {
1999
    int codec_ids[3]; /* several codec IDs are permitted */
2000
    int priv_data_size;
2001
    int (*parser_init)(AVCodecParserContext *s);
2002
    int (*parser_parse)(AVCodecParserContext *s, 
2003
                        AVCodecContext *avctx,
2004
                        uint8_t **poutbuf, int *poutbuf_size, 
2005
                        const uint8_t *buf, int buf_size);
2006
    void (*parser_close)(AVCodecParserContext *s);
2007
    struct AVCodecParser *next;
2008
} AVCodecParser;
2009

    
2010
extern AVCodecParser *av_first_parser;
2011

    
2012
void av_register_codec_parser(AVCodecParser *parser);
2013
AVCodecParserContext *av_parser_init(int codec_id);
2014
int av_parser_parse(AVCodecParserContext *s, 
2015
                    AVCodecContext *avctx,
2016
                    uint8_t **poutbuf, int *poutbuf_size, 
2017
                    const uint8_t *buf, int buf_size,
2018
                    int64_t pts, int64_t dts);
2019
void av_parser_close(AVCodecParserContext *s);
2020

    
2021
extern AVCodecParser mpegvideo_parser;
2022
extern AVCodecParser mpeg4video_parser;
2023
extern AVCodecParser h263_parser;
2024
extern AVCodecParser h264_parser;
2025
extern AVCodecParser mpegaudio_parser;
2026
extern AVCodecParser ac3_parser;
2027

    
2028
/* memory */
2029
void *av_malloc(unsigned int size);
2030
void *av_mallocz(unsigned int size);
2031
void *av_realloc(void *ptr, unsigned int size);
2032
void av_free(void *ptr);
2033
char *av_strdup(const char *s);
2034
void __av_freep(void **ptr);
2035
#define av_freep(p) __av_freep((void **)(p))
2036
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2037
/* for static data only */
2038
/* call av_free_static to release all staticaly allocated tables */
2039
void av_free_static(void);
2040
void *__av_mallocz_static(void** location, unsigned int size);
2041
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2042

    
2043
/* add by bero : in adx.c */
2044
int is_adx(const unsigned char *buf,size_t bufsize);
2045

    
2046
void img_copy(AVPicture *dst, const AVPicture *src,
2047
              int pix_fmt, int width, int height);
2048

    
2049
/* av_log API */
2050

    
2051
#include <stdarg.h>
2052

    
2053
#define AV_LOG_ERROR 0
2054
#define AV_LOG_INFO 1
2055
#define AV_LOG_DEBUG 2
2056

    
2057
extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2058
extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2059
extern int av_log_get_level(void);
2060
extern void av_log_set_level(int);
2061
extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2062

    
2063
#undef  AV_LOG_TRAP_PRINTF
2064
#ifdef AV_LOG_TRAP_PRINTF
2065
#define printf DO NOT USE
2066
#define fprintf DO NOT USE
2067
#undef stderr
2068
#define stderr DO NOT USE
2069
#endif
2070

    
2071
#ifdef __cplusplus
2072
}
2073
#endif
2074

    
2075
#endif /* AVCODEC_H */