Statistics
| Branch: | Revision:

ffmpeg / libavcodec / avcodec.h @ be3564ed

History | View | Annotate | Download (44.2 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 "common.h"
15

    
16
#define LIBAVCODEC_VERSION_INT 0x000406
17
#define LIBAVCODEC_VERSION     "0.4.6"
18
#define LIBAVCODEC_BUILD       4671
19
#define LIBAVCODEC_BUILD_STR   "4671"
20

    
21
#define LIBAVCODEC_IDENT        "FFmpeg" LIBAVCODEC_VERSION "b" LIBAVCODEC_BUILD_STR
22

    
23
enum CodecID {
24
    CODEC_ID_NONE, 
25
    CODEC_ID_MPEG1VIDEO,
26
    CODEC_ID_H263,
27
    CODEC_ID_RV10,
28
    CODEC_ID_MP2,
29
    CODEC_ID_MP3LAME,
30
    CODEC_ID_VORBIS,
31
    CODEC_ID_AC3,
32
    CODEC_ID_MJPEG,
33
    CODEC_ID_MJPEGB,
34
    CODEC_ID_LJPEG,
35
    CODEC_ID_MPEG4,
36
    CODEC_ID_RAWVIDEO,
37
    CODEC_ID_MSMPEG4V1,
38
    CODEC_ID_MSMPEG4V2,
39
    CODEC_ID_MSMPEG4V3,
40
    CODEC_ID_WMV1,
41
    CODEC_ID_WMV2,
42
    CODEC_ID_H263P,
43
    CODEC_ID_H263I,
44
    CODEC_ID_FLV1,
45
    CODEC_ID_SVQ1,
46
    CODEC_ID_SVQ3,
47
    CODEC_ID_DVVIDEO,
48
    CODEC_ID_DVAUDIO,
49
    CODEC_ID_WMAV1,
50
    CODEC_ID_WMAV2,
51
    CODEC_ID_MACE3,
52
    CODEC_ID_MACE6,
53
    CODEC_ID_HUFFYUV,
54
    CODEC_ID_CYUV,
55
    CODEC_ID_H264,
56
    CODEC_ID_INDEO3,
57
    CODEC_ID_VP3,
58
    CODEC_ID_AAC,
59
    CODEC_ID_MPEG4AAC,
60
    CODEC_ID_ASV1,
61
    CODEC_ID_FFV1,
62
    CODEC_ID_4XM,
63
    CODEC_ID_VCR1,
64

    
65
    /* various pcm "codecs" */
66
    CODEC_ID_PCM_S16LE,
67
    CODEC_ID_PCM_S16BE,
68
    CODEC_ID_PCM_U16LE,
69
    CODEC_ID_PCM_U16BE,
70
    CODEC_ID_PCM_S8,
71
    CODEC_ID_PCM_U8,
72
    CODEC_ID_PCM_MULAW,
73
    CODEC_ID_PCM_ALAW,
74

    
75
    /* various adpcm codecs */
76
    CODEC_ID_ADPCM_IMA_QT,
77
    CODEC_ID_ADPCM_IMA_WAV,
78
    CODEC_ID_ADPCM_MS,
79
    CODEC_ID_ADPCM_4XM,
80

    
81
        /* AMR */
82
    CODEC_ID_AMR_NB,
83
    /* RealAudio codecs*/
84
    CODEC_ID_RA_144,
85
    CODEC_ID_RA_288,
86
};
87

    
88
enum CodecType {
89
    CODEC_TYPE_UNKNOWN = -1,
90
    CODEC_TYPE_VIDEO,
91
    CODEC_TYPE_AUDIO,
92
};
93

    
94
/**
95
 * Pixel format.
96
 */
97
enum PixelFormat {
98
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
99
    PIX_FMT_YUV422,    
100
    PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
101
    PIX_FMT_BGR24,     ///< Packed pixel, 3 bytes per pixel, BGRBGR...
102
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
103
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
104
    PIX_FMT_RGBA32,    ///< Packed pixel, 4 bytes per pixel, BGRABGRA...
105
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
106
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
107
    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
108
    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
109
    PIX_FMT_GRAY8,
110
    PIX_FMT_MONOWHITE, ///< 0 is white 
111
    PIX_FMT_MONOBLACK, ///< 0 is black 
112
    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
113
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0 full scale (jpeg)
114
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2 full scale (jpeg)
115
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4 full scale (jpeg)
116
    PIX_FMT_NB,
117
};
118

    
119
/* currently unused, may be used if 24/32 bits samples ever supported */
120
enum SampleFormat {
121
    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
122
};
123

    
124
/* in bytes */
125
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
126

    
127
/**
128
 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
129
 * this is mainly needed because some optimized bitstream readers read 
130
 * 32 or 64 bit at once and could read over the end<br>
131
 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
132
 * MPEG bitstreams could cause overread and segfault
133
 */
134
#define FF_INPUT_BUFFER_PADDING_SIZE 8
135

    
136
/* motion estimation type, EPZS by default */
137
enum Motion_Est_ID {
138
    ME_ZERO = 1,
139
    ME_FULL,
140
    ME_LOG,
141
    ME_PHODS,
142
    ME_EPZS,
143
    ME_X1
144
};
145

    
146
typedef struct RcOverride{
147
    int start_frame;
148
    int end_frame;
149
    int qscale; // if this is 0 then quality_factor will be used instead
150
    float quality_factor;
151
} RcOverride;
152

    
153
/* only for ME compatiblity with old apps */
154
extern int motion_estimation_method;
155

    
156
/* ME algos sorted by quality */
157
static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG, 
158
                                       ME_X1, ME_EPZS, ME_FULL };
159

    
160

    
161
#define FF_MAX_B_FRAMES 8
162

    
163
/* encoding support
164
   these flags can be passed in AVCodecContext.flags before initing 
165
   Note: note not everything is supported yet 
166
*/
167

    
168
#define CODEC_FLAG_HQ     0x0001  ///< brute force MB-type decission mode (slow) 
169
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
170
#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed 
171
#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
172
#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
173
#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
174
/* parent program gurantees that the input for b-frame containing streams is not written to 
175
   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
176
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
177
#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
178
#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
179
#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
180
#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
181
#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
182
#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
183
#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
184
                                            of only at frame boundaries */
185
#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
186
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
187
#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay
188
#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
189
#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
190
#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
191
#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
192
/* Fx : Flag for h263+ extra options */
193
#define CODEC_FLAG_H263P_AIC      0x01000000 ///< Advanced intra coding 
194
#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
195
/* For advanced prediction mode, we reuse the 4MV flag */
196
/* Unsupported options :
197
 *                 Syntax Arithmetic coding (SAC)
198
 *                 Deblocking filter internal loop
199
 *                 Slice structured
200
 *                 Reference Picture Selection
201
 *                 Independant Segment Decoding
202
 *                 Alternative Inter *                 VLC
203
 *                 Modified Quantization */
204
/* /Fx */
205
/* codec capabilities */
206

    
207
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
208
/**
209
 * Codec uses get_buffer() for allocating buffers.
210
 * direct rendering method 1
211
 */
212
#define CODEC_CAP_DR1             0x0002
213
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
214
   used */
215
#define CODEC_CAP_PARSE_ONLY      0x0004
216
#define CODEC_CAP_TRUNCATED       0x0008
217

    
218
#define FF_COMMON_FRAME \
219
    /**\
220
     * pointer to the picture planes.\
221
     * this might be different from the first allocated byte\
222
     * - encoding: \
223
     * - decoding: \
224
     */\
225
    uint8_t *data[4];\
226
    int linesize[4];\
227
    /**\
228
     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
229
     * this isnt used by lavc unless the default get/release_buffer() is used\
230
     * - encoding: \
231
     * - decoding: \
232
     */\
233
    uint8_t *base[4];\
234
    /**\
235
     * 1 -> keyframe, 0-> not\
236
     * - encoding: set by lavc\
237
     * - decoding: set by lavc\
238
     */\
239
    int key_frame;\
240
\
241
    /**\
242
     * picture type of the frame, see ?_TYPE below.\
243
     * - encoding: set by lavc for coded_picture (and set by user for input)\
244
     * - decoding: set by lavc\
245
     */\
246
    int pict_type;\
247
\
248
    /**\
249
     * presentation timestamp in micro seconds (time when frame should be shown to user)\
250
     * if 0 then the frame_rate will be used as reference\
251
     * - encoding: MUST be set by user\
252
     * - decoding: set by lavc\
253
     */\
254
    int64_t pts;\
255
\
256
    /**\
257
     * picture number in bitstream order.\
258
     * - encoding: set by\
259
     * - decoding: set by lavc\
260
     */\
261
    int coded_picture_number;\
262
    /**\
263
     * picture number in display order.\
264
     * - encoding: set by\
265
     * - decoding: set by lavc\
266
     */\
267
    int display_picture_number;\
268
\
269
    /**\
270
     * quality (between 1 (good) and 31 (bad)) \
271
     * - encoding: set by lavc for coded_picture (and set by user for input)\
272
     * - decoding: set by lavc\
273
     */\
274
    float quality; \
275
\
276
    /**\
277
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
278
     * set to something large if the buffer has not been used yet \
279
     * - encoding: unused\
280
     * - decoding: MUST be set by get_buffer()\
281
     */\
282
    int age;\
283
\
284
    /**\
285
     * is this picture used as reference\
286
     * - encoding: unused\
287
     * - decoding: set by lavc (before get_buffer() call))\
288
     */\
289
    int reference;\
290
\
291
    /**\
292
     * QP table\
293
     * - encoding: unused\
294
     * - decoding: set by lavc\
295
     */\
296
    int8_t *qscale_table;\
297
    /**\
298
     * QP store stride\
299
     * - encoding: unused\
300
     * - decoding: set by lavc\
301
     */\
302
    int qstride;\
303
\
304
    /**\
305
     * mbskip_table[mb]>=1 if MB didnt change\
306
     * stride= mb_width = (width+15)>>4\
307
     * - encoding: unused\
308
     * - decoding: set by lavc\
309
     */\
310
    uint8_t *mbskip_table;\
311
\
312
    /**\
313
     * for some private data of the user\
314
     * - encoding: unused\
315
     * - decoding: set by user\
316
     */\
317
    void *opaque;\
318
\
319
    /**\
320
     * error\
321
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
322
     * - decoding: unused\
323
     */\
324
    uint64_t error[4];\
325
\
326
    /**\
327
     * type of the buffer (to keep track of who has to dealloc data[*])\
328
     * - encoding: set by the one who allocs it\
329
     * - decoding: set by the one who allocs it\
330
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
331
     */\
332
    int type;\
333
    \
334
    /**\
335
     * when decoding, this signal how much the picture must be delayed.\
336
     * extra_delay = repeat_pict / (2*fps)\
337
     * - encoding: unused\
338
     * - decoding: set by lavc\
339
     */\
340
    int repeat_pict;\
341
    \
342
    /**\
343
     * \
344
     */\
345
    int qscale_type;\
346

    
347
#define FF_QSCALE_TYPE_MPEG1        0
348
#define FF_QSCALE_TYPE_MPEG2        1
349

    
350
#define FF_BUFFER_TYPE_INTERNAL 1
351
#define FF_BUFFER_TYPE_USER     2 ///< Direct rendering buffers
352
#define FF_BUFFER_TYPE_SHARED   4 ///< buffer from somewher else, dont dealloc
353

    
354

    
355
#define FF_I_TYPE 1 // Intra
356
#define FF_P_TYPE 2 // Predicted
357
#define FF_B_TYPE 3 // Bi-dir predicted
358
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
359
#define FF_SI_TYPE 5
360
#define FF_SP_TYPE 6
361

    
362
/**
363
 * Audio Video Frame.
364
 */
365
typedef struct AVFrame {
366
    FF_COMMON_FRAME
367
} AVFrame;
368

    
369
#define DEFAULT_FRAME_RATE_BASE 1001000
370

    
371
/**
372
 * main external api structure.
373
 */
374
typedef struct AVCodecContext {
375
    /**
376
     * the average bitrate.
377
     * - encoding: set by user. unused for constant quantizer encoding
378
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
379
     */
380
    int bit_rate;
381

    
382
    /**
383
     * number of bits the bitstream is allowed to diverge from the reference.
384
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
385
     * - encoding: set by user. unused for constant quantizer encoding
386
     * - decoding: unused
387
     */
388
    int bit_rate_tolerance; 
389

    
390
    /**
391
     * CODEC_FLAG_*.
392
     * - encoding: set by user.
393
     * - decoding: set by user.
394
     */
395
    int flags;
396

    
397
    /**
398
     * some codecs needs additionnal format info. It is stored here
399
     * - encoding: set by user. 
400
     * - decoding: set by lavc. (FIXME is this ok?)
401
     */
402
    int sub_id;
403

    
404
    /**
405
     * motion estimation algorithm used for video coding.
406
     * - encoding: MUST be set by user.
407
     * - decoding: unused
408
     */
409
    int me_method;
410

    
411
    /**
412
     * some codecs need / can use extra-data like huffman tables.
413
     * mjpeg: huffman tables
414
     * rv10: additional flags
415
     * mpeg4: global headers (they can be in the bitstream or here)
416
     * - encoding: set/allocated/freed by lavc.
417
     * - decoding: set/allocated/freed by user.
418
     */
419
    void *extradata;
420
    int extradata_size;
421
    
422
    /* video only */
423
    /**
424
     * frames per sec multiplied by frame_rate_base.
425
     * for variable fps this is the precission, so if the timestamps 
426
     * can be specified in msec precssion then this is 1000*frame_rate_base
427
     * - encoding: MUST be set by user
428
     * - decoding: set by lavc. 0 or the frame_rate if available
429
     */
430
    int frame_rate;
431
    
432
    /**
433
     * width / height.
434
     * - encoding: MUST be set by user. 
435
     * - decoding: set by user, some codecs might override / change it during playback
436
     */
437
    int width, height;
438
    
439
#define FF_ASPECT_SQUARE 1
440
#define FF_ASPECT_4_3_625 2
441
#define FF_ASPECT_4_3_525 3
442
#define FF_ASPECT_16_9_625 4
443
#define FF_ASPECT_16_9_525 5
444
#define FF_ASPECT_EXTENDED 15
445

    
446
    /**
447
     * the number of pictures in a group of pitures, or 0 for intra_only.
448
     * - encoding: set by user.
449
     * - decoding: unused
450
     */
451
    int gop_size;
452

    
453
    /**
454
     * pixel format, see PIX_FMT_xxx.
455
     * - encoding: unused
456
     * - decoding: set by lavc.
457
     */
458
    enum PixelFormat pix_fmt;
459
 
460
    /**
461
     * Frame rate emulation. If not zero lower layer (i.e. format handler) 
462
     * has to read frames at native frame rate.
463
     * - encoding: set by user.
464
     * - decoding: unused.
465
     */
466
    int rate_emu;
467
       
468
    /**
469
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
470
     * decoder to draw an horizontal band. It improve cache usage. Not
471
     * all codecs can do that. You must check the codec capabilities
472
     * before
473
     * - encoding: unused
474
     * - decoding: set by user.
475
     * @param height the height of the slice
476
     * @param y the y position of the slice
477
     * @param type 1->top field, 2->bottom field, 3->frame
478
     * @param offset offset into the AVFrame.data from which the slice should be read
479
     */
480
    void (*draw_horiz_band)(struct AVCodecContext *s,
481
                            AVFrame *src, int offset[4],
482
                            int y, int type, int height);
483

    
484
    /* audio only */
485
    int sample_rate; ///< samples per sec 
486
    int channels;
487
    int sample_fmt;  ///< sample format, currenly unused 
488

    
489
    /* the following data should not be initialized */
490
    int frame_size;     ///< in samples, initialized when calling 'init' 
491
    int frame_number;   ///< audio or video frame number 
492
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
493
    
494
    /**
495
     * number of frames the decoded output will be delayed relative to 
496
     * the encoded input.
497
     * - encoding: set by lavc.
498
     * - decoding: unused
499
     */
500
    int delay;
501
    
502
    /* - encoding parameters */
503
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
504
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
505
    
506
    /**
507
     * minimum quantizer.
508
     * - encoding: set by user.
509
     * - decoding: unused
510
     */
511
    int qmin;
512

    
513
    /**
514
     * maximum quantizer.
515
     * - encoding: set by user.
516
     * - decoding: unused
517
     */
518
    int qmax;
519

    
520
    /**
521
     * maximum quantizer difference etween frames.
522
     * - encoding: set by user.
523
     * - decoding: unused
524
     */
525
    int max_qdiff;
526

    
527
    /**
528
     * maximum number of b frames between non b frames.
529
     * note: the output will be delayed by max_b_frames+1 relative to the input
530
     * - encoding: set by user.
531
     * - decoding: unused
532
     */
533
    int max_b_frames;
534

    
535
    /**
536
     * qscale factor between ip and b frames.
537
     * - encoding: set by user.
538
     * - decoding: unused
539
     */
540
    float b_quant_factor;
541
    
542
    /** obsolete FIXME remove */
543
    int rc_strategy;
544
    int b_frame_strategy;
545

    
546
    /**
547
     * hurry up amount.
548
     * - encoding: unused
549
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
550
     */
551
    int hurry_up;
552
    
553
    struct AVCodec *codec;
554
    
555
    void *priv_data;
556

    
557
    /* The following data is for RTP friendly coding */
558
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
559
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
560
                    /* highers numbers represent more error-prone */
561
                    /* enviroments, by now just "1" exist         */
562
    
563
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
564
                            /* do it's best to deliver a chunk with size    */
565
                            /* below rtp_payload_size, the chunk will start */
566
                            /* with a start code on some codecs like H.263  */
567
                            /* This doesn't take account of any particular  */
568
                            /* headers inside the transmited RTP payload    */
569

    
570
    
571
    /* The RTP callcack: This function is called  */
572
    /* every time the encoder as a packet to send */
573
    /* Depends on the encoder if the data starts  */
574
    /* with a Start Code (it should) H.263 does   */
575
    void (*rtp_callback)(void *data, int size, int packet_number); 
576

    
577
    /* statistics, used for 2-pass encoding */
578
    int mv_bits;
579
    int header_bits;
580
    int i_tex_bits;
581
    int p_tex_bits;
582
    int i_count;
583
    int p_count;
584
    int skip_count;
585
    int misc_bits;
586
    
587
    /**
588
     * number of bits used for the previously encoded frame.
589
     * - encoding: set by lavc
590
     * - decoding: unused
591
     */
592
    int frame_bits;
593

    
594
    /**
595
     * private data of the user, can be used to carry app specific stuff.
596
     * - encoding: set by user
597
     * - decoding: set by user
598
     */
599
    void *opaque;
600

    
601
    char codec_name[32];
602
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
603
    enum CodecID codec_id; /* see CODEC_ID_xxx */
604
    
605
    /**
606
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
607
     * this is used to workaround some encoder bugs
608
     * - encoding: unused
609
     * - decoding: set by user, will be converted to upper case by lavc during init
610
     */
611
    unsigned int codec_tag;
612
    
613
    /**
614
     * workaround bugs in encoders which sometimes cannot be detected automatically.
615
     * - encoding: unused
616
     * - decoding: set by user
617
     */
618
    int workaround_bugs;
619
#define FF_BUG_AUTODETECT       1  ///< autodetection
620
#define FF_BUG_OLD_MSMPEG4      2
621
#define FF_BUG_XVID_ILACE       4
622
#define FF_BUG_UMP4             8
623
#define FF_BUG_NO_PADDING       16
624
#define FF_BUG_AC_VLC           32
625
#define FF_BUG_QPEL_CHROMA      64
626
#define FF_BUG_STD_QPEL         128
627
#define FF_BUG_QPEL_CHROMA2     256
628
#define FF_BUG_DIRECT_BLOCKSIZE 512
629
#define FF_BUG_EDGE             1024
630
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
631
        
632
    /**
633
     * luma single coeff elimination threshold.
634
     * - encoding: set by user
635
     * - decoding: unused
636
     */
637
    int luma_elim_threshold;
638
    
639
    /**
640
     * chroma single coeff elimination threshold.
641
     * - encoding: set by user
642
     * - decoding: unused
643
     */
644
    int chroma_elim_threshold;
645
    
646
    /**
647
     * strictly follow the std (MPEG4, ...).
648
     * - encoding: set by user
649
     * - decoding: unused
650
     */
651
    int strict_std_compliance;
652
    
653
    /**
654
     * qscale offset between ip and b frames.
655
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
656
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
657
     * - encoding: set by user.
658
     * - decoding: unused
659
     */
660
    float b_quant_offset;
661
    
662
    /**
663
     * error resilience higher values will detect more errors but may missdetect
664
     * some more or less valid parts as errors.
665
     * - encoding: unused
666
     * - decoding: set by user
667
     */
668
    int error_resilience;
669
#define FF_ER_CAREFULL        1
670
#define FF_ER_COMPLIANT       2
671
#define FF_ER_AGGRESSIVE      3
672
#define FF_ER_VERY_AGGRESSIVE 4
673
    
674
    /**
675
     * called at the beginning of each frame to get a buffer for it.
676
     * if pic.reference is set then the frame will be read later by lavc
677
     * width and height should be rounded up to the next multiple of 16
678
     * - encoding: unused
679
     * - decoding: set by lavc, user can override
680
     */
681
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
682
    
683
    /**
684
     * called to release buffers which where allocated with get_buffer.
685
     * a released buffer can be reused in get_buffer()
686
     * pic.data[*] must be set to NULL
687
     * - encoding: unused
688
     * - decoding: set by lavc, user can override
689
     */
690
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
691

    
692
    /**
693
     * is 1 if the decoded stream contains b frames, 0 otherwise.
694
     * - encoding: unused
695
     * - decoding: set by lavc
696
     */
697
    int has_b_frames;
698
    
699
    int block_align; ///< used by some WAV based audio codecs
700
    
701
    int parse_only; /* - decoding only: if true, only parsing is done
702
                       (function avcodec_parse_frame()). The frame
703
                       data is returned. Only MPEG codecs support this now. */
704
    
705
    /**
706
     * 0-> h263 quant 1-> mpeg quant.
707
     * - encoding: set by user.
708
     * - decoding: unused
709
     */
710
    int mpeg_quant;
711
    
712
    /**
713
     * pass1 encoding statistics output buffer.
714
     * - encoding: set by lavc
715
     * - decoding: unused
716
     */
717
    char *stats_out;
718
    
719
    /**
720
     * pass2 encoding statistics input buffer.
721
     * concatenated stuff from stats_out of pass1 should be placed here
722
     * - encoding: allocated/set/freed by user
723
     * - decoding: unused
724
     */
725
    char *stats_in;
726
    
727
    /**
728
     * ratecontrol qmin qmax limiting method.
729
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
730
     * - encoding: set by user.
731
     * - decoding: unused
732
     */
733
    float rc_qsquish;
734

    
735
    float rc_qmod_amp;
736
    int rc_qmod_freq;
737
    
738
    /**
739
     * ratecontrol override, see RcOverride.
740
     * - encoding: allocated/set/freed by user.
741
     * - decoding: unused
742
     */
743
    RcOverride *rc_override;
744
    int rc_override_count;
745
    
746
    /**
747
     * rate control equation.
748
     * - encoding: set by user
749
     * - decoding: unused
750
     */
751
    char *rc_eq;
752
    
753
    /**
754
     * maximum bitrate.
755
     * - encoding: set by user.
756
     * - decoding: unused
757
     */
758
    int rc_max_rate;
759
    
760
    /**
761
     * minimum bitrate.
762
     * - encoding: set by user.
763
     * - decoding: unused
764
     */
765
    int rc_min_rate;
766
    
767
    /**
768
     * decoder bitstream buffer size.
769
     * - encoding: set by user.
770
     * - decoding: unused
771
     */
772
    int rc_buffer_size;
773
    float rc_buffer_aggressivity;
774

    
775
    /**
776
     * qscale factor between p and i frames.
777
     * - encoding: set by user.
778
     * - decoding: unused
779
     */
780
    float i_quant_factor;
781
    
782
    /**
783
     * qscale offset between p and i frames.
784
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
785
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
786
     * - encoding: set by user.
787
     * - decoding: unused
788
     */
789
    float i_quant_offset;
790
    
791
    /**
792
     * initial complexity for pass1 ratecontrol.
793
     * - encoding: set by user.
794
     * - decoding: unused
795
     */
796
    float rc_initial_cplx;
797

    
798
    /**
799
     * dct algorithm, see FF_DCT_* below.
800
     * - encoding: set by user
801
     * - decoding: unused
802
     */
803
    int dct_algo;
804
#define FF_DCT_AUTO    0
805
#define FF_DCT_FASTINT 1
806
#define FF_DCT_INT     2
807
#define FF_DCT_MMX     3
808
#define FF_DCT_MLIB    4
809
#define FF_DCT_ALTIVEC 5
810
    
811
    /**
812
     * luminance masking (0-> disabled).
813
     * - encoding: set by user
814
     * - decoding: unused
815
     */
816
    float lumi_masking;
817
    
818
    /**
819
     * temporary complexity masking (0-> disabled).
820
     * - encoding: set by user
821
     * - decoding: unused
822
     */
823
    float temporal_cplx_masking;
824
    
825
    /**
826
     * spatial complexity masking (0-> disabled).
827
     * - encoding: set by user
828
     * - decoding: unused
829
     */
830
    float spatial_cplx_masking;
831
    
832
    /**
833
     * p block masking (0-> disabled).
834
     * - encoding: set by user
835
     * - decoding: unused
836
     */
837
    float p_masking;
838

    
839
    /**
840
     * darkness masking (0-> disabled).
841
     * - encoding: set by user
842
     * - decoding: unused
843
     */
844
    float dark_masking;
845
    
846
    
847
    /* for binary compatibility */
848
    int unused;
849
    
850
    /**
851
     * idct algorithm, see FF_IDCT_* below.
852
     * - encoding: set by user
853
     * - decoding: set by user
854
     */
855
    int idct_algo;
856
#define FF_IDCT_AUTO         0
857
#define FF_IDCT_INT          1
858
#define FF_IDCT_SIMPLE       2
859
#define FF_IDCT_SIMPLEMMX    3
860
#define FF_IDCT_LIBMPEG2MMX  4
861
#define FF_IDCT_PS2          5
862
#define FF_IDCT_MLIB         6
863
#define FF_IDCT_ARM          7
864
#define FF_IDCT_ALTIVEC      8
865
#define FF_IDCT_SH4          9
866
#define FF_IDCT_SIMPLEARM    10
867

    
868
    /**
869
     * slice count.
870
     * - encoding: set by lavc
871
     * - decoding: set by user (or 0)
872
     */
873
    int slice_count;
874
    /**
875
     * slice offsets in the frame in bytes.
876
     * - encoding: set/allocated by lavc
877
     * - decoding: set/allocated by user (or NULL)
878
     */
879
    int *slice_offset;
880

    
881
    /**
882
     * error concealment flags.
883
     * - encoding: unused
884
     * - decoding: set by user
885
     */
886
    int error_concealment;
887
#define FF_EC_GUESS_MVS   1
888
#define FF_EC_DEBLOCK     2
889

    
890
    /**
891
     * dsp_mask could be add used to disable unwanted CPU features
892
     * CPU features (i.e. MMX, SSE. ...)
893
     *
894
     * with FORCE flag you may instead enable given CPU features
895
     * (Dangerous: usable in case of misdetection, improper usage however will
896
     * result into program crash)
897
     */
898
    unsigned dsp_mask;
899
#define FF_MM_FORCE        0x80000000 /* force usage of selected flags (OR) */
900
    /* lower 16 bits - CPU features */
901
#ifdef HAVE_MMX
902
#define FF_MM_MMX        0x0001 /* standard MMX */
903
#define FF_MM_3DNOW        0x0004 /* AMD 3DNOW */
904
#define FF_MM_MMXEXT        0x0002 /* SSE integer functions or AMD MMX ext */
905
#define FF_MM_SSE        0x0008 /* SSE functions */
906
#define FF_MM_SSE2        0x0010 /* PIV SSE2 functions */
907
#endif /* HAVE_MMX */
908

    
909
    /**
910
     * bits per sample/pixel from the demuxer (needed for huffyuv).
911
     * - encoding: set by lavc
912
     * - decoding: set by user
913
     */
914
     int bits_per_sample;
915
    
916
    /**
917
     * prediction method (needed for huffyuv).
918
     * - encoding: set by user
919
     * - decoding: unused
920
     */
921
     int prediction_method;
922
#define FF_PRED_LEFT   0
923
#define FF_PRED_PLANE  1
924
#define FF_PRED_MEDIAN 2
925
    
926
    /**
927
     * aspect ratio (0 if unknown).
928
     * - encoding: set by user.
929
     * - decoding: set by lavc.
930
     */
931
    float aspect_ratio;
932

    
933
    /**
934
     * the picture in the bitstream.
935
     * - encoding: set by lavc
936
     * - decoding: set by lavc
937
     */
938
    AVFrame *coded_frame;
939

    
940
    /**
941
     * debug.
942
     * - encoding: set by user.
943
     * - decoding: set by user.
944
     */
945
    int debug;
946
#define FF_DEBUG_PICT_INFO 1
947
#define FF_DEBUG_RC        2
948
#define FF_DEBUG_BITSTREAM 4
949
#define FF_DEBUG_MB_TYPE   8
950
#define FF_DEBUG_QP        16
951
#define FF_DEBUG_MV        32
952
#define FF_DEBUG_VIS_MV    0x00000040
953
#define FF_DEBUG_SKIP      0x00000080
954
#define FF_DEBUG_STARTCODE 0x00000100
955
#define FF_DEBUG_PTS       0x00000200
956
#define FF_DEBUG_ER        0x00000400
957
#define FF_DEBUG_MMCO      0x00000800
958
    
959
    /**
960
     * error.
961
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
962
     * - decoding: unused
963
     */
964
    uint64_t error[4];
965
    
966
    /**
967
     * minimum MB quantizer.
968
     * - encoding: set by user.
969
     * - decoding: unused
970
     */
971
    int mb_qmin;
972

    
973
    /**
974
     * maximum MB quantizer.
975
     * - encoding: set by user.
976
     * - decoding: unused
977
     */
978
    int mb_qmax;
979
    
980
    /**
981
     * motion estimation compare function.
982
     * - encoding: set by user.
983
     * - decoding: unused
984
     */
985
    int me_cmp;
986
    /**
987
     * subpixel motion estimation compare function.
988
     * - encoding: set by user.
989
     * - decoding: unused
990
     */
991
    int me_sub_cmp;
992
    /**
993
     * macroblock compare function (not supported yet).
994
     * - encoding: set by user.
995
     * - decoding: unused
996
     */
997
    int mb_cmp;
998
#define FF_CMP_SAD  0
999
#define FF_CMP_SSE  1
1000
#define FF_CMP_SATD 2
1001
#define FF_CMP_DCT  3
1002
#define FF_CMP_PSNR 4
1003
#define FF_CMP_BIT  5
1004
#define FF_CMP_RD   6
1005
#define FF_CMP_ZERO 7
1006
#define FF_CMP_CHROMA 256
1007
    
1008
    /**
1009
     * ME diamond size & shape.
1010
     * - encoding: set by user.
1011
     * - decoding: unused
1012
     */
1013
    int dia_size;
1014

    
1015
    /**
1016
     * amount of previous MV predictors (2a+1 x 2a+1 square).
1017
     * - encoding: set by user.
1018
     * - decoding: unused
1019
     */
1020
    int last_predictor_count;
1021

    
1022
    /**
1023
     * pre pass for motion estimation.
1024
     * - encoding: set by user.
1025
     * - decoding: unused
1026
     */
1027
    int pre_me;
1028

    
1029
    /**
1030
     * motion estimation pre pass compare function.
1031
     * - encoding: set by user.
1032
     * - decoding: unused
1033
     */
1034
    int me_pre_cmp;
1035

    
1036
    /**
1037
     * ME pre pass diamond size & shape.
1038
     * - encoding: set by user.
1039
     * - decoding: unused
1040
     */
1041
    int pre_dia_size;
1042

    
1043
    /**
1044
     * subpel ME quality.
1045
     * - encoding: set by user.
1046
     * - decoding: unused
1047
     */
1048
    int me_subpel_quality;
1049

    
1050
    /**
1051
     * callback to negotiate the pixelFormat.
1052
     * @param fmt is the list of formats which are supported by the codec,
1053
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1054
     * the first is allways the native one
1055
     * @return the choosen format
1056
     * - encoding: unused
1057
     * - decoding: set by user, if not set then the native format will always be choosen
1058
     */
1059
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1060

    
1061
    /**
1062
     * DTG active format information (additionnal aspect ratio
1063
     * information only used in DVB MPEG2 transport streams). 0 if
1064
     * not set.
1065
     * 
1066
     * - encoding: unused.
1067
     * - decoding: set by decoder 
1068
     */
1069
    int dtg_active_format;
1070
#define FF_DTG_AFD_SAME         8
1071
#define FF_DTG_AFD_4_3          9
1072
#define FF_DTG_AFD_16_9         10
1073
#define FF_DTG_AFD_14_9         11
1074
#define FF_DTG_AFD_4_3_SP_14_9  13
1075
#define FF_DTG_AFD_16_9_SP_14_9 14
1076
#define FF_DTG_AFD_SP_4_3       15
1077

    
1078
    /**
1079
     * Maximum motion estimation search range in subpel units.
1080
     * if 0 then no limit
1081
     * 
1082
     * - encoding: set by user.
1083
     * - decoding: unused.
1084
     */
1085
    int me_range;
1086

    
1087
    /**
1088
     * frame_rate_base.
1089
     * for variable fps this is 1
1090
     * - encoding: set by user.
1091
     * - decoding: set by lavc.
1092
     * @todo move this after frame_rate
1093
     */
1094

    
1095
    int frame_rate_base;
1096
    /**
1097
     * intra quantizer bias.
1098
     * - encoding: set by user.
1099
     * - decoding: unused
1100
     */
1101
    int intra_quant_bias;
1102
#define FF_DEFAULT_QUANT_BIAS 999999
1103
    
1104
    /**
1105
     * inter quantizer bias.
1106
     * - encoding: set by user.
1107
     * - decoding: unused
1108
     */
1109
    int inter_quant_bias;
1110

    
1111
    /**
1112
     * color table ID.
1113
     * - encoding: unused.
1114
     * - decoding: which clrtable should be used for 8bit RGB images
1115
     *             table have to be stored somewhere FIXME
1116
     */
1117
    int color_table_id;
1118
    
1119
    /**
1120
     * internal_buffer count. 
1121
     * Dont touch, used by lavc default_get_buffer()
1122
     */
1123
    int internal_buffer_count;
1124
    
1125
    /**
1126
     * internal_buffers. 
1127
     * Dont touch, used by lavc default_get_buffer()
1128
     */
1129
    void *internal_buffer;
1130
    
1131
#define FF_QUALITY_SCALE 256
1132
    /**
1133
     * global quality for codecs which cannot change it per frame.
1134
     * this should be proportional to MPEG1/2/4 qscale.
1135
     * - encoding: set by user.
1136
     * - decoding: unused
1137
     */
1138
    int global_quality;
1139
    
1140
#define FF_CODER_TYPE_VLC   0
1141
#define FF_CODER_TYPE_AC    1
1142
    /**
1143
     * coder type
1144
     * - encoding: set by user.
1145
     * - decoding: unused
1146
     */
1147
    int coder_type;
1148

    
1149
    /**
1150
     * context model
1151
     * - encoding: set by user.
1152
     * - decoding: unused
1153
     */
1154
    int context_model;
1155
    
1156
    /**
1157
     * slice flags
1158
     * - encoding: unused
1159
     * - decoding: set by user.
1160
     */
1161
    int slice_flags;
1162
#define SLICE_FLAG_CODED_ORDER    0x0001 ///< draw_horiz_band() is called in coded order instead of display
1163
#define SLICE_FLAG_ALLOW_FIELD    0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1164
#define SLICE_FLAG_ALLOW_PLANE    0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1165

    
1166
} AVCodecContext;
1167

    
1168

    
1169
/**
1170
 * AVOption.
1171
 */
1172
typedef struct AVOption {
1173
    /** options' name */
1174
    const char *name; /* if name is NULL, it indicates a link to next */
1175
    /** short English text help or const struct AVOption* subpointer */
1176
    const char *help; //        const struct AVOption* sub;
1177
    /** offset to context structure where the parsed value should be stored */
1178
    int offset;
1179
    /** options' type */
1180
    int type;
1181
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1182
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1183
#define FF_OPT_TYPE_INT 3       ///< integer
1184
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1185
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1186
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1187
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1188
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1189
    /** min value  (min == max   ->  no limits) */
1190
    double min;
1191
    /** maximum value for double/int */
1192
    double max;
1193
    /** default boo [0,1]l/double/int value */
1194
    double defval;
1195
    /**
1196
     * default string value (with optional semicolon delimited extra option-list
1197
     * i.e.   option1;option2;option3
1198
     * defval might select other then first argument as default
1199
     */
1200
    const char *defstr;
1201
#define FF_OPT_MAX_DEPTH 10
1202
} AVOption;
1203

    
1204
/**
1205
 * Parse option(s) and sets fields in passed structure
1206
 * @param strct        structure where the parsed results will be written
1207
 * @param list  list with AVOptions
1208
 * @param opts        string with options for parsing
1209
 */
1210
int avoption_parse(void* strct, const AVOption* list, const char* opts);
1211

    
1212

    
1213
/**
1214
 * AVCodec.
1215
 */
1216
typedef struct AVCodec {
1217
    const char *name;
1218
    enum CodecType type;
1219
    int id;
1220
    int priv_data_size;
1221
    int (*init)(AVCodecContext *);
1222
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1223
    int (*close)(AVCodecContext *);
1224
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1225
                  uint8_t *buf, int buf_size);
1226
    int capabilities;
1227
    const AVOption *options;
1228
    struct AVCodec *next;
1229
    void (*flush)(AVCodecContext *);
1230
} AVCodec;
1231

    
1232
/**
1233
 * four components are given, that's all.
1234
 * the last component is alpha
1235
 */
1236
typedef struct AVPicture {
1237
    uint8_t *data[4];
1238
    int linesize[4];       ///< number of bytes per line
1239
} AVPicture;
1240

    
1241
extern AVCodec ac3_encoder;
1242
extern AVCodec mp2_encoder;
1243
extern AVCodec mp3lame_encoder;
1244
extern AVCodec oggvorbis_encoder;
1245
extern AVCodec mpeg1video_encoder;
1246
extern AVCodec h263_encoder;
1247
extern AVCodec h263p_encoder;
1248
extern AVCodec flv_encoder;
1249
extern AVCodec rv10_encoder;
1250
extern AVCodec mjpeg_encoder;
1251
extern AVCodec ljpeg_encoder;
1252
extern AVCodec mpeg4_encoder;
1253
extern AVCodec msmpeg4v1_encoder;
1254
extern AVCodec msmpeg4v2_encoder;
1255
extern AVCodec msmpeg4v3_encoder;
1256
extern AVCodec wmv1_encoder;
1257
extern AVCodec wmv2_encoder;
1258
extern AVCodec huffyuv_encoder;
1259
extern AVCodec h264_encoder;
1260
extern AVCodec asv1_encoder;
1261
extern AVCodec vcr1_encoder;
1262
extern AVCodec ffv1_encoder;
1263

    
1264
extern AVCodec h263_decoder;
1265
extern AVCodec mpeg4_decoder;
1266
extern AVCodec msmpeg4v1_decoder;
1267
extern AVCodec msmpeg4v2_decoder;
1268
extern AVCodec msmpeg4v3_decoder;
1269
extern AVCodec wmv1_decoder;
1270
extern AVCodec wmv2_decoder;
1271
extern AVCodec mpeg_decoder;
1272
extern AVCodec h263i_decoder;
1273
extern AVCodec flv_decoder;
1274
extern AVCodec rv10_decoder;
1275
extern AVCodec svq1_decoder;
1276
extern AVCodec svq3_decoder;
1277
extern AVCodec dvvideo_decoder;
1278
extern AVCodec dvaudio_decoder;
1279
extern AVCodec wmav1_decoder;
1280
extern AVCodec wmav2_decoder;
1281
extern AVCodec mjpeg_decoder;
1282
extern AVCodec mjpegb_decoder;
1283
extern AVCodec mp2_decoder;
1284
extern AVCodec mp3_decoder;
1285
extern AVCodec mace3_decoder;
1286
extern AVCodec mace6_decoder;
1287
extern AVCodec huffyuv_decoder;
1288
extern AVCodec oggvorbis_decoder;
1289
extern AVCodec cyuv_decoder;
1290
extern AVCodec h264_decoder;
1291
extern AVCodec indeo3_decoder;
1292
extern AVCodec vp3_decoder;
1293
extern AVCodec amr_nb_decoder;
1294
extern AVCodec amr_nb_encoder;
1295
extern AVCodec aac_decoder;
1296
extern AVCodec mpeg4aac_decoder;
1297
extern AVCodec asv1_decoder;
1298
extern AVCodec vcr1_decoder;
1299
extern AVCodec ffv1_decoder;
1300
extern AVCodec fourxm_decoder;
1301
extern AVCodec ra_144_decoder;
1302
extern AVCodec ra_288_decoder;
1303

    
1304
/* pcm codecs */
1305
#define PCM_CODEC(id, name) \
1306
extern AVCodec name ## _decoder; \
1307
extern AVCodec name ## _encoder
1308

    
1309
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1310
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1311
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1312
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1313
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1314
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1315
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1316
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1317

    
1318
/* adpcm codecs */
1319

    
1320
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1321
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1322
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1323
PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1324

    
1325
#undef PCM_CODEC
1326

    
1327
/* dummy raw video codec */
1328
extern AVCodec rawvideo_encoder;
1329
extern AVCodec rawvideo_decoder;
1330

    
1331
/* the following codecs use external GPL libs */
1332
extern AVCodec ac3_decoder;
1333

    
1334
/* resample.c */
1335

    
1336
struct ReSampleContext;
1337

    
1338
typedef struct ReSampleContext ReSampleContext;
1339

    
1340
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1341
                                     int output_rate, int input_rate);
1342
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1343
void audio_resample_close(ReSampleContext *s);
1344

    
1345
/* YUV420 format is assumed ! */
1346

    
1347
struct ImgReSampleContext;
1348

    
1349
typedef struct ImgReSampleContext ImgReSampleContext;
1350

    
1351
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1352
                                      int input_width, int input_height);
1353

    
1354
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1355
                                      int iwidth, int iheight,
1356
                                      int topBand, int bottomBand,
1357
                                      int leftBand, int rightBand);
1358

    
1359
void img_resample(ImgReSampleContext *s, 
1360
                  AVPicture *output, AVPicture *input);
1361

    
1362
void img_resample_close(ImgReSampleContext *s);
1363

    
1364
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1365
                   int pix_fmt, int width, int height);
1366
int avpicture_layout(AVPicture* src, int pix_fmt, int width, int height,
1367
                     unsigned char *dest, int dest_size);
1368
int avpicture_get_size(int pix_fmt, int width, int height);
1369
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1370
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1371
enum PixelFormat avcodec_get_pix_fmt(const char* name);
1372

    
1373
#define FF_LOSS_RESOLUTION  0x0001 /* loss due to resolution change */
1374
#define FF_LOSS_DEPTH       0x0002 /* loss due to color depth change */
1375
#define FF_LOSS_COLORSPACE  0x0004 /* loss due to color space conversion */
1376
#define FF_LOSS_ALPHA       0x0008 /* loss of alpha bits */
1377
#define FF_LOSS_COLORQUANT  0x0010 /* loss due to color quantization */
1378
#define FF_LOSS_CHROMA      0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1379

    
1380
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1381
                             int has_alpha);
1382
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1383
                              int has_alpha, int *loss_ptr);
1384

    
1385
#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
1386
#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
1387
int img_get_alpha_info(AVPicture *src, int pix_fmt, int width, int height);
1388

    
1389
/* convert among pixel formats */
1390
int img_convert(AVPicture *dst, int dst_pix_fmt,
1391
                AVPicture *src, int pix_fmt, 
1392
                int width, int height);
1393

    
1394
/* deinterlace a picture */
1395
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1396
                          int pix_fmt, int width, int height);
1397

    
1398
/* external high level API */
1399

    
1400
extern AVCodec *first_avcodec;
1401

    
1402
/* returns LIBAVCODEC_VERSION_INT constant */
1403
unsigned avcodec_version(void);
1404
/* returns LIBAVCODEC_BUILD constant */
1405
unsigned avcodec_build(void);
1406
void avcodec_init(void);
1407

    
1408
void register_avcodec(AVCodec *format);
1409
AVCodec *avcodec_find_encoder(enum CodecID id);
1410
AVCodec *avcodec_find_encoder_by_name(const char *name);
1411
AVCodec *avcodec_find_decoder(enum CodecID id);
1412
AVCodec *avcodec_find_decoder_by_name(const char *name);
1413
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1414

    
1415
void avcodec_get_context_defaults(AVCodecContext *s);
1416
AVCodecContext *avcodec_alloc_context(void);
1417
AVFrame *avcodec_alloc_frame(void);
1418

    
1419
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1420
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1421
void avcodec_default_free_buffers(AVCodecContext *s);
1422

    
1423
/**
1424
 * opens / inits the AVCodecContext.
1425
 * not thread save!
1426
 */
1427
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1428

    
1429
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1430
                         int *frame_size_ptr,
1431
                         uint8_t *buf, int buf_size);
1432
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1433
                         int *got_picture_ptr,
1434
                         uint8_t *buf, int buf_size);
1435
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1436
                        int *data_size_ptr,
1437
                        uint8_t *buf, int buf_size);
1438
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1439
                         const short *samples);
1440
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1441
                         const AVFrame *pict);
1442

    
1443
int avcodec_close(AVCodecContext *avctx);
1444

    
1445
void avcodec_register_all(void);
1446

    
1447
void avcodec_flush_buffers(AVCodecContext *avctx);
1448

    
1449
/* misc usefull functions */
1450

    
1451
/**
1452
 * returns a single letter to describe the picture type
1453
 */
1454
char av_get_pict_type_char(int pict_type);
1455

    
1456
/**
1457
 * reduce a fraction.
1458
 * this is usefull for framerate calculations
1459
 * @param max the maximum allowed for dst_nom & dst_den
1460
 * @return 1 if exact, 0 otherwise
1461
 */
1462
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1463

    
1464
/**
1465
 * rescale a 64bit integer.
1466
 * a simple a*b/c isnt possible as it can overflow
1467
 */
1468
int64_t av_rescale(int64_t a, int b, int c);
1469

    
1470

    
1471
/**
1472
 * Interface for 0.5.0 version
1473
 *
1474
 * do not even think about it's usage for this moment
1475
 */
1476

    
1477
typedef struct {
1478
    /// compressed size used from given memory buffer
1479
    int size;
1480
    /// I/P/B frame type
1481
    int frame_type;
1482
} avc_enc_result_t;
1483

    
1484
/**
1485
 * Commands
1486
 * order can't be changed - once it was defined
1487
 */
1488
typedef enum {
1489
    // general commands
1490
    AVC_OPEN_BY_NAME = 0xACA000,
1491
    AVC_OPEN_BY_CODEC_ID,
1492
    AVC_OPEN_BY_FOURCC,
1493
    AVC_CLOSE,
1494

    
1495
    AVC_FLUSH,
1496
    // pin - struct { uint8_t* src, uint_t src_size }
1497
    // pout - struct { AVPicture* img, consumed_bytes,
1498
    AVC_DECODE,
1499
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1500
    // pout - uint_t used_from_dest_size
1501
    AVC_ENCODE, 
1502

    
1503
    // query/get video commands
1504
    AVC_GET_VERSION = 0xACB000,
1505
    AVC_GET_WIDTH,
1506
    AVC_GET_HEIGHT,
1507
    AVC_GET_DELAY,
1508
    AVC_GET_QUANT_TABLE,
1509
    // ...
1510

    
1511
    // query/get audio commands
1512
    AVC_GET_FRAME_SIZE = 0xABC000,
1513

    
1514
    // maybe define some simple structure which
1515
    // might be passed to the user - but they can't
1516
    // contain any codec specific parts and these
1517
    // calls are usualy necessary only few times
1518

    
1519
    // set video commands
1520
    AVC_SET_WIDTH = 0xACD000,
1521
    AVC_SET_HEIGHT,
1522

    
1523
    // set video encoding commands
1524
    AVC_SET_FRAME_RATE = 0xACD800,
1525
    AVC_SET_QUALITY,
1526
    AVC_SET_HURRY_UP,
1527

    
1528
    // set audio commands
1529
    AVC_SET_SAMPLE_RATE = 0xACE000,
1530
    AVC_SET_CHANNELS,
1531

    
1532
} avc_cmd_t;
1533

    
1534
/**
1535
 * \param handle  allocated private structure by libavcodec
1536
 *                for initialization pass NULL - will be returned pout
1537
 *                user is supposed to know nothing about its structure
1538
 * \param cmd     type of operation to be performed
1539
 * \param pint    input parameter
1540
 * \param pout    output parameter
1541
 *
1542
 * \returns  command status - eventually for query command it might return
1543
 * integer resulting value
1544
 */
1545
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1546

    
1547
/* memory */
1548
void *av_malloc(unsigned int size);
1549
void *av_mallocz(unsigned int size);
1550
void *av_realloc(void *ptr, unsigned int size);
1551
void av_free(void *ptr);
1552
char *av_strdup(const char *s);
1553
void __av_freep(void **ptr);
1554
#define av_freep(p) __av_freep((void **)(p))
1555
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1556
/* for static data only */
1557
/* call av_free_static to release all staticaly allocated tables */
1558
void av_free_static(void);
1559
void *__av_mallocz_static(void** location, unsigned int size);
1560
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1561

    
1562
#ifdef __cplusplus
1563
}
1564
#endif
1565

    
1566
#endif /* AVCODEC_H */