Statistics
| Branch: | Revision:

ffmpeg / libavformat / avformat.h @ 3ba1438d

History | View | Annotate | Download (20.4 KB)

1
#ifndef AVFORMAT_H
2
#define AVFORMAT_H
3

    
4
#ifdef __cplusplus
5
extern "C" {
6
#endif
7

    
8
#define LIBAVFORMAT_BUILD       4619
9

    
10
#define LIBAVFORMAT_VERSION_INT FFMPEG_VERSION_INT
11
#define LIBAVFORMAT_VERSION     FFMPEG_VERSION
12
#define LIBAVFORMAT_IDENT        "FFmpeg" FFMPEG_VERSION "b" AV_STRINGIFY(LIBAVFORMAT_BUILD)
13

    
14
#include <time.h>
15
#include <stdio.h>  /* FILE */
16
#include "avcodec.h"
17

    
18
#include "avio.h"
19

    
20
/* packet functions */
21

    
22
#ifndef MAXINT64
23
#define MAXINT64 int64_t_C(0x7fffffffffffffff)
24
#endif
25

    
26
#ifndef MININT64
27
#define MININT64 int64_t_C(0x8000000000000000)
28
#endif
29

    
30
typedef struct AVPacket {
31
    int64_t pts; /* presentation time stamp in AV_TIME_BASE units (or
32
                    pts_den units in muxers or demuxers) */
33
    int64_t dts; /* decompression time stamp in AV_TIME_BASE units (or
34
                    pts_den units in muxers or demuxers) */
35
    uint8_t *data;
36
    int   size;
37
    int   stream_index;
38
    int   flags;
39
    int   duration; /* presentation duration (0 if not available) */
40
    void  (*destruct)(struct AVPacket *);
41
    void  *priv;
42
} AVPacket; 
43
#define PKT_FLAG_KEY   0x0001
44

    
45
void av_destruct_packet_nofree(AVPacket *pkt);
46

    
47
/* initialize optional fields of a packet */
48
static inline void av_init_packet(AVPacket *pkt)
49
{
50
    pkt->pts   = AV_NOPTS_VALUE;
51
    pkt->dts   = AV_NOPTS_VALUE;
52
    pkt->duration = 0;
53
    pkt->flags = 0;
54
    pkt->stream_index = 0;
55
    pkt->destruct= av_destruct_packet_nofree;
56
}
57

    
58
int av_new_packet(AVPacket *pkt, int size);
59
int av_dup_packet(AVPacket *pkt);
60

    
61
/**
62
 * Free a packet
63
 *
64
 * @param pkt packet to free
65
 */
66
static inline void av_free_packet(AVPacket *pkt)
67
{
68
    if (pkt && pkt->destruct) {
69
        pkt->destruct(pkt);
70
    }
71
}
72

    
73
/*************************************************/
74
/* fractional numbers for exact pts handling */
75

    
76
/* the exact value of the fractional number is: 'val + num / den'. num
77
   is assumed to be such as 0 <= num < den */
78
typedef struct AVFrac {
79
    int64_t val, num, den; 
80
} AVFrac;
81

    
82
void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
83
void av_frac_add(AVFrac *f, int64_t incr);
84
void av_frac_set(AVFrac *f, int64_t val);
85

    
86
/*************************************************/
87
/* input/output formats */
88

    
89
struct AVFormatContext;
90

    
91
/* this structure contains the data a format has to probe a file */
92
typedef struct AVProbeData {
93
    const char *filename;
94
    unsigned char *buf;
95
    int buf_size;
96
} AVProbeData;
97

    
98
#define AVPROBE_SCORE_MAX 100
99

    
100
typedef struct AVFormatParameters {
101
    int frame_rate;
102
    int frame_rate_base;
103
    int sample_rate;
104
    int channels;
105
    int width;
106
    int height;
107
    enum PixelFormat pix_fmt;
108
    struct AVImageFormat *image_format;
109
    int channel; /* used to select dv channel */
110
    const char *device; /* video4linux, audio or DV device */
111
    const char *standard; /* tv standard, NTSC, PAL, SECAM */
112
    int mpeg2ts_raw:1;  /* force raw MPEG2 transport stream output, if possible */
113
    int mpeg2ts_compute_pcr:1; /* compute exact PCR for each transport
114
                                  stream packet (only meaningful if
115
                                  mpeg2ts_raw is TRUE */
116
    int initial_pause:1;       /* do not begin to play the stream
117
                                  immediately (RTSP only) */
118
} AVFormatParameters;
119

    
120
#define AVFMT_NOFILE        0x0001 /* no file should be opened */
121
#define AVFMT_NEEDNUMBER    0x0002 /* needs '%d' in filename */ 
122
#define AVFMT_SHOW_IDS      0x0008 /* show format stream IDs numbers */
123
#define AVFMT_RAWPICTURE    0x0020 /* format wants AVPicture structure for
124
                                      raw picture data */
125

    
126
typedef struct AVOutputFormat {
127
    const char *name;
128
    const char *long_name;
129
    const char *mime_type;
130
    const char *extensions; /* comma separated extensions */
131
    /* size of private data so that it can be allocated in the wrapper */
132
    int priv_data_size;
133
    /* output support */
134
    enum CodecID audio_codec; /* default audio codec */
135
    enum CodecID video_codec; /* default video codec */
136
    int (*write_header)(struct AVFormatContext *);
137
    int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
138
    int (*write_trailer)(struct AVFormatContext *);
139
    /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
140
    int flags;
141
    /* currently only used to set pixel format if not YUV420P */
142
    int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
143
    int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
144
    /* private fields */
145
    struct AVOutputFormat *next;
146
} AVOutputFormat;
147

    
148
typedef struct AVInputFormat {
149
    const char *name;
150
    const char *long_name;
151
    /* size of private data so that it can be allocated in the wrapper */
152
    int priv_data_size;
153
    /* tell if a given file has a chance of being parsing by this format */
154
    int (*read_probe)(AVProbeData *);
155
    /* read the format header and initialize the AVFormatContext
156
       structure. Return 0 if OK. 'ap' if non NULL contains
157
       additionnal paramters. Only used in raw format right
158
       now. 'av_new_stream' should be called to create new streams.  */
159
    int (*read_header)(struct AVFormatContext *,
160
                       AVFormatParameters *ap);
161
    /* read one packet and put it in 'pkt'. pts and flags are also
162
       set. 'av_new_stream' can be called only if the flag
163
       AVFMTCTX_NOHEADER is used. */
164
    int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
165
    /* close the stream. The AVFormatContext and AVStreams are not
166
       freed by this function */
167
    int (*read_close)(struct AVFormatContext *);
168
    /** 
169
     * seek to a given timestamp relative to the frames in 
170
     * stream component stream_index
171
     * @param stream_index must not be -1
172
     * @param flags selects which direction should be preferred if no exact 
173
     *              match is available
174
     */
175
    int (*read_seek)(struct AVFormatContext *, 
176
                     int stream_index, int64_t timestamp, int flags);
177
    /**
178
     * gets the next timestamp in AV_TIME_BASE units.
179
     */
180
    int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
181
                              int64_t *pos, int64_t pos_limit);
182
    /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
183
    int flags;
184
    /* if extensions are defined, then no probe is done. You should
185
       usually not use extension format guessing because it is not
186
       reliable enough */
187
    const char *extensions;
188
    /* general purpose read only value that the format can use */
189
    int value;
190

    
191
    /* start/resume playing - only meaningful if using a network based format
192
       (RTSP) */
193
    int (*read_play)(struct AVFormatContext *);
194

    
195
    /* pause playing - only meaningful if using a network based format
196
       (RTSP) */
197
    int (*read_pause)(struct AVFormatContext *);
198

    
199
    /* private fields */
200
    struct AVInputFormat *next;
201
} AVInputFormat;
202

    
203
typedef struct AVIndexEntry {
204
    int64_t pos;
205
    int64_t timestamp;
206
#define AVINDEX_KEYFRAME 0x0001
207
/* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */
208
    int flags;
209
    int min_distance;         /* min distance between this and the previous keyframe, used to avoid unneeded searching */
210
} AVIndexEntry;
211

    
212
typedef struct AVStream {
213
    int index;    /* stream index in AVFormatContext */
214
    int id;       /* format specific stream id */
215
    AVCodecContext codec; /* codec context */
216
    int r_frame_rate;     /* real frame rate of the stream */
217
    int r_frame_rate_base;/* real frame rate base of the stream */
218
    void *priv_data;
219
    /* internal data used in av_find_stream_info() */
220
    int64_t codec_info_duration;     
221
    int codec_info_nb_frames;
222
    /* encoding: PTS generation when outputing stream */
223
    AVFrac pts;
224
    AVRational time_base;
225
    int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
226
    /* ffmpeg.c private use */
227
    int stream_copy; /* if TRUE, just copy stream */
228
    /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
229
     * MN:dunno if thats the right place, for it */
230
    float quality; 
231
    /* decoding: position of the first frame of the component, in
232
       AV_TIME_BASE fractional seconds. */
233
    int64_t start_time; 
234
    /* decoding: duration of the stream, in AV_TIME_BASE fractional
235
       seconds. */
236
    int64_t duration;
237

    
238
    /* av_read_frame() support */
239
    int need_parsing;
240
    struct AVCodecParserContext *parser;
241

    
242
    int64_t cur_dts;
243
    int last_IP_duration;
244
    int64_t last_IP_pts;
245
    /* av_seek_frame() support */
246
    AVIndexEntry *index_entries; /* only used if the format does not
247
                                    support seeking natively */
248
    int nb_index_entries;
249
    int index_entries_allocated_size;
250
} AVStream;
251

    
252
#define AVFMTCTX_NOHEADER      0x0001 /* signal that no header is present
253
                                         (streams are added dynamically) */
254

    
255
#define MAX_STREAMS 20
256

    
257
/* format I/O context */
258
typedef struct AVFormatContext {
259
    const AVClass *av_class; /* set by av_alloc_format_context */
260
    /* can only be iformat or oformat, not both at the same time */
261
    struct AVInputFormat *iformat;
262
    struct AVOutputFormat *oformat;
263
    void *priv_data;
264
    ByteIOContext pb;
265
    int nb_streams;
266
    AVStream *streams[MAX_STREAMS];
267
    char filename[1024]; /* input or output filename */
268
    /* stream info */
269
    int64_t timestamp;
270
    char title[512];
271
    char author[512];
272
    char copyright[512];
273
    char comment[512];
274
    char album[512];
275
    int year;  /* ID3 year, 0 if none */
276
    int track; /* track number, 0 if none */
277
    char genre[32]; /* ID3 genre */
278

    
279
    int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
280
    /* private data for pts handling (do not modify directly) */
281
    /* This buffer is only needed when packets were already buffered but
282
       not decoded, for example to get the codec parameters in mpeg
283
       streams */
284
    struct AVPacketList *packet_buffer;
285

    
286
    /* decoding: position of the first frame of the component, in
287
       AV_TIME_BASE fractional seconds. NEVER set this value directly:
288
       it is deduced from the AVStream values.  */
289
    int64_t start_time; 
290
    /* decoding: duration of the stream, in AV_TIME_BASE fractional
291
       seconds. NEVER set this value directly: it is deduced from the
292
       AVStream values.  */
293
    int64_t duration;
294
    /* decoding: total file size. 0 if unknown */
295
    int64_t file_size;
296
    /* decoding: total stream bitrate in bit/s, 0 if not
297
       available. Never set it directly if the file_size and the
298
       duration are known as ffmpeg can compute it automatically. */
299
    int bit_rate;
300

    
301
    /* av_read_frame() support */
302
    AVStream *cur_st;
303
    const uint8_t *cur_ptr;
304
    int cur_len;
305
    AVPacket cur_pkt;
306

    
307
    /* av_seek_frame() support */
308
    int64_t data_offset; /* offset of the first packet */
309
    int index_built;
310
    
311
    int mux_rate;
312
    int packet_size;
313
} AVFormatContext;
314

    
315
typedef struct AVPacketList {
316
    AVPacket pkt;
317
    struct AVPacketList *next;
318
} AVPacketList;
319

    
320
extern AVInputFormat *first_iformat;
321
extern AVOutputFormat *first_oformat;
322

    
323
/* still image support */
324
struct AVInputImageContext;
325
typedef struct AVInputImageContext AVInputImageContext;
326

    
327
typedef struct AVImageInfo {
328
    enum PixelFormat pix_fmt; /* requested pixel format */
329
    int width; /* requested width */
330
    int height; /* requested height */
331
    int interleaved; /* image is interleaved (e.g. interleaved GIF) */
332
    AVPicture pict; /* returned allocated image */
333
} AVImageInfo;
334

    
335
/* AVImageFormat.flags field constants */
336
#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
337

    
338
typedef struct AVImageFormat {
339
    const char *name;
340
    const char *extensions;
341
    /* tell if a given file has a chance of being parsing by this format */
342
    int (*img_probe)(AVProbeData *);
343
    /* read a whole image. 'alloc_cb' is called when the image size is
344
       known so that the caller can allocate the image. If 'allo_cb'
345
       returns non zero, then the parsing is aborted. Return '0' if
346
       OK. */
347
    int (*img_read)(ByteIOContext *, 
348
                    int (*alloc_cb)(void *, AVImageInfo *info), void *);
349
    /* write the image */
350
    int supported_pixel_formats; /* mask of supported formats for output */
351
    int (*img_write)(ByteIOContext *, AVImageInfo *);
352
    int flags;
353
    struct AVImageFormat *next;
354
} AVImageFormat;
355

    
356
void av_register_image_format(AVImageFormat *img_fmt);
357
AVImageFormat *av_probe_image_format(AVProbeData *pd);
358
AVImageFormat *guess_image_format(const char *filename);
359
int av_read_image(ByteIOContext *pb, const char *filename,
360
                  AVImageFormat *fmt,
361
                  int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
362
int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
363

    
364
extern AVImageFormat *first_image_format;
365

    
366
extern AVImageFormat pnm_image_format;
367
extern AVImageFormat pbm_image_format;
368
extern AVImageFormat pgm_image_format;
369
extern AVImageFormat ppm_image_format;
370
extern AVImageFormat pam_image_format;
371
extern AVImageFormat pgmyuv_image_format;
372
extern AVImageFormat yuv_image_format;
373
#ifdef CONFIG_ZLIB
374
extern AVImageFormat png_image_format;
375
#endif
376
extern AVImageFormat jpeg_image_format;
377
extern AVImageFormat gif_image_format;
378
extern AVImageFormat sgi_image_format;
379

    
380
/* XXX: use automatic init with either ELF sections or C file parser */
381
/* modules */
382

    
383
/* mpeg.c */
384
extern AVInputFormat mpegps_demux;
385
int mpegps_init(void);
386

    
387
/* mpegts.c */
388
extern AVInputFormat mpegts_demux;
389
int mpegts_init(void);
390

    
391
/* rm.c */
392
int rm_init(void);
393

    
394
/* crc.c */
395
int crc_init(void);
396

    
397
/* img.c */
398
int img_init(void);
399

    
400
/* img2.c */
401
int img2_init(void);
402

    
403
/* asf.c */
404
int asf_init(void);
405

    
406
/* avienc.c */
407
int avienc_init(void);
408

    
409
/* avidec.c */
410
int avidec_init(void);
411

    
412
/* swf.c */
413
int swf_init(void);
414

    
415
/* mov.c */
416
int mov_init(void);
417

    
418
/* movenc.c */
419
int movenc_init(void);
420

    
421
/* flvenc.c */
422
int flvenc_init(void);
423

    
424
/* flvdec.c */
425
int flvdec_init(void);
426

    
427
/* jpeg.c */
428
int jpeg_init(void);
429

    
430
/* gif.c */
431
int gif_init(void);
432

    
433
/* au.c */
434
int au_init(void);
435

    
436
/* amr.c */
437
int amr_init(void);
438

    
439
/* wav.c */
440
int ff_wav_init(void);
441

    
442
/* raw.c */
443
int pcm_read_seek(AVFormatContext *s, 
444
                  int stream_index, int64_t timestamp);
445
int raw_init(void);
446

    
447
/* mp3.c */
448
int mp3_init(void);
449

    
450
/* yuv4mpeg.c */
451
int yuv4mpeg_init(void);
452

    
453
/* ogg.c */
454
int ogg_init(void);
455

    
456
/* dv.c */
457
int ff_dv_init(void);
458

    
459
/* ffm.c */
460
int ffm_init(void);
461

    
462
/* rtsp.c */
463
extern AVInputFormat redir_demux;
464
int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
465

    
466
/* 4xm.c */
467
int fourxm_init(void);
468

    
469
/* psxstr.c */
470
int str_init(void);
471

    
472
/* idroq.c */
473
int roq_init(void);
474

    
475
/* ipmovie.c */
476
int ipmovie_init(void);
477

    
478
/* nut.c */
479
int nut_init(void);
480

    
481
/* wc3movie.c */
482
int wc3_init(void);
483

    
484
/* westwood.c */
485
int westwood_init(void);
486

    
487
/* segafilm.c */
488
int film_init(void);
489

    
490
/* idcin.c */
491
int idcin_init(void);
492

    
493
/* flic.c */
494
int flic_init(void);
495

    
496
/* sierravmd.c */
497
int vmd_init(void);
498

    
499
/* matroska.c */
500
int matroska_init(void);
501

    
502
/* sol.c */
503
int sol_init(void);
504

    
505
#include "rtp.h"
506

    
507
#include "rtsp.h"
508

    
509
/* yuv4mpeg.c */
510
extern AVOutputFormat yuv4mpegpipe_oformat;
511

    
512
/* utils.c */
513
void av_register_input_format(AVInputFormat *format);
514
void av_register_output_format(AVOutputFormat *format);
515
AVOutputFormat *guess_stream_format(const char *short_name, 
516
                                    const char *filename, const char *mime_type);
517
AVOutputFormat *guess_format(const char *short_name, 
518
                             const char *filename, const char *mime_type);
519

    
520
void av_hex_dump(FILE *f, uint8_t *buf, int size);
521
void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
522

    
523
void av_register_all(void);
524

    
525
typedef struct FifoBuffer {
526
    uint8_t *buffer;
527
    uint8_t *rptr, *wptr, *end;
528
} FifoBuffer;
529

    
530
int fifo_init(FifoBuffer *f, int size);
531
void fifo_free(FifoBuffer *f);
532
int fifo_size(FifoBuffer *f, uint8_t *rptr);
533
int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
534
void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
535
int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
536

    
537
/* media file input */
538
AVInputFormat *av_find_input_format(const char *short_name);
539
AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
540
int av_open_input_stream(AVFormatContext **ic_ptr, 
541
                         ByteIOContext *pb, const char *filename, 
542
                         AVInputFormat *fmt, AVFormatParameters *ap);
543
int av_open_input_file(AVFormatContext **ic_ptr, const char *filename, 
544
                       AVInputFormat *fmt,
545
                       int buf_size,
546
                       AVFormatParameters *ap);
547
/* no av_open for output, so applications will need this: */
548
AVFormatContext *av_alloc_format_context(void);
549

    
550
#define AVERROR_UNKNOWN     (-1)  /* unknown error */
551
#define AVERROR_IO          (-2)  /* i/o error */
552
#define AVERROR_NUMEXPECTED (-3)  /* number syntax expected in filename */
553
#define AVERROR_INVALIDDATA (-4)  /* invalid data found */
554
#define AVERROR_NOMEM       (-5)  /* not enough memory */
555
#define AVERROR_NOFMT       (-6)  /* unknown format */
556
#define AVERROR_NOTSUPP     (-7)  /* operation not supported */
557
 
558
int av_find_stream_info(AVFormatContext *ic);
559
int av_read_packet(AVFormatContext *s, AVPacket *pkt);
560
int av_read_frame(AVFormatContext *s, AVPacket *pkt);
561
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
562
int av_read_play(AVFormatContext *s);
563
int av_read_pause(AVFormatContext *s);
564
void av_close_input_file(AVFormatContext *s);
565
AVStream *av_new_stream(AVFormatContext *s, int id);
566
void av_set_pts_info(AVStream *s, int pts_wrap_bits,
567
                     int pts_num, int pts_den);
568

    
569
#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
570
#define AVSEEK_FLAG_BYTE     2 ///< seeking based on position in bytes
571

    
572
int av_find_default_stream_index(AVFormatContext *s);
573
int av_index_search_timestamp(AVStream *st, int timestamp, int flags);
574
int av_add_index_entry(AVStream *st,
575
                       int64_t pos, int64_t timestamp, int distance, int flags);
576
int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
577

    
578
/* media file output */
579
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
580
int av_write_header(AVFormatContext *s);
581
int av_write_frame(AVFormatContext *s, AVPacket *pkt);
582
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
583

    
584
int av_write_trailer(AVFormatContext *s);
585

    
586
void dump_format(AVFormatContext *ic,
587
                 int index, 
588
                 const char *url,
589
                 int is_output);
590
int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
591
int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
592
int64_t parse_date(const char *datestr, int duration);
593

    
594
int64_t av_gettime(void);
595

    
596
/* ffm specific for ffserver */
597
#define FFM_PACKET_SIZE 4096
598
offset_t ffm_read_write_index(int fd);
599
void ffm_write_write_index(int fd, offset_t pos);
600
void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
601

    
602
int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
603

    
604
int get_frame_filename(char *buf, int buf_size,
605
                       const char *path, int number);
606
int filename_number_test(const char *filename);
607

    
608
/* grab specific */
609
int video_grab_init(void);
610
int audio_init(void);
611

    
612
/* DV1394 */
613
int dv1394_init(void);
614

    
615
#ifdef HAVE_AV_CONFIG_H
616

    
617
#include "os_support.h"
618

    
619
int strstart(const char *str, const char *val, const char **ptr);
620
int stristart(const char *str, const char *val, const char **ptr);
621
void pstrcpy(char *buf, int buf_size, const char *str);
622
char *pstrcat(char *buf, int buf_size, const char *s);
623

    
624
void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
625

    
626
#ifdef __GNUC__
627
#define dynarray_add(tab, nb_ptr, elem)\
628
do {\
629
    typeof(tab) _tab = (tab);\
630
    typeof(elem) _elem = (elem);\
631
    (void)sizeof(**_tab == _elem); /* check that types are compatible */\
632
    __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
633
} while(0)
634
#else
635
#define dynarray_add(tab, nb_ptr, elem)\
636
do {\
637
    __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
638
} while(0)
639
#endif
640

    
641
time_t mktimegm(struct tm *tm);
642
struct tm *brktimegm(time_t secs, struct tm *tm);
643
const char *small_strptime(const char *p, const char *fmt, 
644
                           struct tm *dt);
645

    
646
struct in_addr;
647
int resolve_host(struct in_addr *sin_addr, const char *hostname);
648

    
649
void url_split(char *proto, int proto_size,
650
               char *authorization, int authorization_size,
651
               char *hostname, int hostname_size,
652
               int *port_ptr,
653
               char *path, int path_size,
654
               const char *url);
655

    
656
int match_ext(const char *filename, const char *extensions);
657

    
658
#endif /* HAVE_AV_CONFIG_H */
659

    
660
#ifdef __cplusplus
661
}
662
#endif
663

    
664
#endif /* AVFORMAT_H */