e891b9768dd6f5c551d590a9cc368832c9d90e3d
[libav.git] / libavformat / avformat.h
1 #ifndef AVFORMAT_H
2 #define AVFORMAT_H
3
4 #ifdef __cplusplus
5 extern "C" {
6 #endif
7
8 #define LIBAVFORMAT_VERSION_INT ((49<<16)+(1<<8)+0)
9 #define LIBAVFORMAT_VERSION 49.1.0
10 #define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
11
12 #define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
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 time_base units
32 int64_t dts; ///< decompression time stamp in time_base units
33 uint8_t *data;
34 int size;
35 int stream_index;
36 int flags;
37 int duration; ///< presentation duration in time_base units (0 if not available)
38 void (*destruct)(struct AVPacket *);
39 void *priv;
40 int64_t pos; ///< byte position in stream, -1 if unknown
41 } AVPacket;
42 #define PKT_FLAG_KEY 0x0001
43
44 void av_destruct_packet_nofree(AVPacket *pkt);
45 void av_destruct_packet(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->pos = -1;
53 pkt->duration = 0;
54 pkt->flags = 0;
55 pkt->stream_index = 0;
56 pkt->destruct= av_destruct_packet_nofree;
57 }
58
59 int av_new_packet(AVPacket *pkt, int size);
60 int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
61 int av_dup_packet(AVPacket *pkt);
62
63 /**
64 * Free a packet
65 *
66 * @param pkt packet to free
67 */
68 static inline void av_free_packet(AVPacket *pkt)
69 {
70 if (pkt && pkt->destruct) {
71 pkt->destruct(pkt);
72 }
73 }
74
75 /*************************************************/
76 /* fractional numbers for exact pts handling */
77
78 /* the exact value of the fractional number is: 'val + num / den'. num
79 is assumed to be such as 0 <= num < den */
80 typedef struct AVFrac {
81 int64_t val, num, den;
82 } AVFrac;
83
84 void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
85 void av_frac_add(AVFrac *f, int64_t incr);
86 void av_frac_set(AVFrac *f, int64_t val);
87
88 /*************************************************/
89 /* input/output formats */
90
91 struct AVFormatContext;
92
93 /* this structure contains the data a format has to probe a file */
94 typedef struct AVProbeData {
95 const char *filename;
96 unsigned char *buf;
97 int buf_size;
98 } AVProbeData;
99
100 #define AVPROBE_SCORE_MAX 100
101
102 typedef struct AVFormatParameters {
103 AVRational time_base;
104 int sample_rate;
105 int channels;
106 int width;
107 int height;
108 enum PixelFormat pix_fmt;
109 struct AVImageFormat *image_format;
110 int channel; /* used to select dv channel */
111 const char *device; /* video, audio or DV device */
112 const char *standard; /* tv standard, NTSC, PAL, SECAM */
113 int mpeg2ts_raw:1; /* force raw MPEG2 transport stream output, if possible */
114 int mpeg2ts_compute_pcr:1; /* compute exact PCR for each transport
115 stream packet (only meaningful if
116 mpeg2ts_raw is TRUE */
117 int initial_pause:1; /* do not begin to play the stream
118 immediately (RTSP only) */
119 enum CodecID video_codec_id;
120 enum CodecID audio_codec_id;
121 } AVFormatParameters;
122
123 #define AVFMT_NOFILE 0x0001 /* no file should be opened */
124 #define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
125 #define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
126 #define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
127 raw picture data */
128 #define AVFMT_GLOBALHEADER 0x0040 /* format wants global header */
129
130 typedef struct AVOutputFormat {
131 const char *name;
132 const char *long_name;
133 const char *mime_type;
134 const char *extensions; /* comma separated extensions */
135 /* size of private data so that it can be allocated in the wrapper */
136 int priv_data_size;
137 /* output support */
138 enum CodecID audio_codec; /* default audio codec */
139 enum CodecID video_codec; /* default video codec */
140 int (*write_header)(struct AVFormatContext *);
141 int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
142 int (*write_trailer)(struct AVFormatContext *);
143 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
144 int flags;
145 /* currently only used to set pixel format if not YUV420P */
146 int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
147 int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
148 /* private fields */
149 struct AVOutputFormat *next;
150 } AVOutputFormat;
151
152 typedef struct AVInputFormat {
153 const char *name;
154 const char *long_name;
155 /* size of private data so that it can be allocated in the wrapper */
156 int priv_data_size;
157 /* tell if a given file has a chance of being parsing by this format */
158 int (*read_probe)(AVProbeData *);
159 /* read the format header and initialize the AVFormatContext
160 structure. Return 0 if OK. 'ap' if non NULL contains
161 additionnal paramters. Only used in raw format right
162 now. 'av_new_stream' should be called to create new streams. */
163 int (*read_header)(struct AVFormatContext *,
164 AVFormatParameters *ap);
165 /* read one packet and put it in 'pkt'. pts and flags are also
166 set. 'av_new_stream' can be called only if the flag
167 AVFMTCTX_NOHEADER is used. */
168 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
169 /* close the stream. The AVFormatContext and AVStreams are not
170 freed by this function */
171 int (*read_close)(struct AVFormatContext *);
172 /**
173 * seek to a given timestamp relative to the frames in
174 * stream component stream_index
175 * @param stream_index must not be -1
176 * @param flags selects which direction should be preferred if no exact
177 * match is available
178 */
179 int (*read_seek)(struct AVFormatContext *,
180 int stream_index, int64_t timestamp, int flags);
181 /**
182 * gets the next timestamp in AV_TIME_BASE units.
183 */
184 int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
185 int64_t *pos, int64_t pos_limit);
186 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
187 int flags;
188 /* if extensions are defined, then no probe is done. You should
189 usually not use extension format guessing because it is not
190 reliable enough */
191 const char *extensions;
192 /* general purpose read only value that the format can use */
193 int value;
194
195 /* start/resume playing - only meaningful if using a network based format
196 (RTSP) */
197 int (*read_play)(struct AVFormatContext *);
198
199 /* pause playing - only meaningful if using a network based format
200 (RTSP) */
201 int (*read_pause)(struct AVFormatContext *);
202
203 /* private fields */
204 struct AVInputFormat *next;
205 } AVInputFormat;
206
207 typedef struct AVIndexEntry {
208 int64_t pos;
209 int64_t timestamp;
210 #define AVINDEX_KEYFRAME 0x0001
211 /* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */
212 int flags;
213 int min_distance; /* min distance between this and the previous keyframe, used to avoid unneeded searching */
214 } AVIndexEntry;
215
216 typedef struct AVStream {
217 int index; /* stream index in AVFormatContext */
218 int id; /* format specific stream id */
219 AVCodecContext *codec; /* codec context */
220 /**
221 * real base frame rate of the stream.
222 * for example if the timebase is 1/90000 and all frames have either
223 * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
224 */
225 AVRational r_frame_rate;
226 void *priv_data;
227 /* internal data used in av_find_stream_info() */
228 int64_t codec_info_duration;
229 int codec_info_nb_frames;
230 /* encoding: PTS generation when outputing stream */
231 AVFrac pts;
232 AVRational time_base;
233 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
234 /* ffmpeg.c private use */
235 int stream_copy; /* if TRUE, just copy stream */
236 enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
237 //FIXME move stuff to a flags field?
238 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
239 * MN:dunno if thats the right place, for it */
240 float quality;
241 /* decoding: position of the first frame of the component, in
242 AV_TIME_BASE fractional seconds. */
243 int64_t start_time;
244 /* decoding: duration of the stream, in AV_TIME_BASE fractional
245 seconds. */
246 int64_t duration;
247
248 char language[4]; /* ISO 639 3-letter language code (empty string if undefined) */
249
250 /* av_read_frame() support */
251 int need_parsing; ///< 1->full parsing needed, 2->only parse headers dont repack
252 struct AVCodecParserContext *parser;
253
254 int64_t cur_dts;
255 int last_IP_duration;
256 int64_t last_IP_pts;
257 /* av_seek_frame() support */
258 AVIndexEntry *index_entries; /* only used if the format does not
259 support seeking natively */
260 int nb_index_entries;
261 int index_entries_allocated_size;
262
263 int64_t nb_frames; ///< number of frames in this stream if known or 0
264 } AVStream;
265
266 #define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
267 (streams are added dynamically) */
268
269 #define MAX_STREAMS 20
270
271 /* format I/O context */
272 typedef struct AVFormatContext {
273 const AVClass *av_class; /* set by av_alloc_format_context */
274 /* can only be iformat or oformat, not both at the same time */
275 struct AVInputFormat *iformat;
276 struct AVOutputFormat *oformat;
277 void *priv_data;
278 ByteIOContext pb;
279 int nb_streams;
280 AVStream *streams[MAX_STREAMS];
281 char filename[1024]; /* input or output filename */
282 /* stream info */
283 int64_t timestamp;
284 char title[512];
285 char author[512];
286 char copyright[512];
287 char comment[512];
288 char album[512];
289 int year; /* ID3 year, 0 if none */
290 int track; /* track number, 0 if none */
291 char genre[32]; /* ID3 genre */
292
293 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
294 /* private data for pts handling (do not modify directly) */
295 /* This buffer is only needed when packets were already buffered but
296 not decoded, for example to get the codec parameters in mpeg
297 streams */
298 struct AVPacketList *packet_buffer;
299
300 /* decoding: position of the first frame of the component, in
301 AV_TIME_BASE fractional seconds. NEVER set this value directly:
302 it is deduced from the AVStream values. */
303 int64_t start_time;
304 /* decoding: duration of the stream, in AV_TIME_BASE fractional
305 seconds. NEVER set this value directly: it is deduced from the
306 AVStream values. */
307 int64_t duration;
308 /* decoding: total file size. 0 if unknown */
309 int64_t file_size;
310 /* decoding: total stream bitrate in bit/s, 0 if not
311 available. Never set it directly if the file_size and the
312 duration are known as ffmpeg can compute it automatically. */
313 int bit_rate;
314
315 /* av_read_frame() support */
316 AVStream *cur_st;
317 const uint8_t *cur_ptr;
318 int cur_len;
319 AVPacket cur_pkt;
320
321 /* av_seek_frame() support */
322 int64_t data_offset; /* offset of the first packet */
323 int index_built;
324
325 int mux_rate;
326 int packet_size;
327 int preload;
328 int max_delay;
329
330 #define AVFMT_NOOUTPUTLOOP -1
331 #define AVFMT_INFINITEOUTPUTLOOP 0
332 /* number of times to loop output in formats that support it */
333 int loop_output;
334
335 int flags;
336 #define AVFMT_FLAG_GENPTS 0x0001 ///< generate pts if missing even if it requires parsing future frames
337 } AVFormatContext;
338
339 typedef struct AVPacketList {
340 AVPacket pkt;
341 struct AVPacketList *next;
342 } AVPacketList;
343
344 extern AVInputFormat *first_iformat;
345 extern AVOutputFormat *first_oformat;
346
347 /* still image support */
348 struct AVInputImageContext;
349 typedef struct AVInputImageContext AVInputImageContext;
350
351 typedef struct AVImageInfo {
352 enum PixelFormat pix_fmt; /* requested pixel format */
353 int width; /* requested width */
354 int height; /* requested height */
355 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
356 AVPicture pict; /* returned allocated image */
357 } AVImageInfo;
358
359 /* AVImageFormat.flags field constants */
360 #define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
361
362 typedef struct AVImageFormat {
363 const char *name;
364 const char *extensions;
365 /* tell if a given file has a chance of being parsing by this format */
366 int (*img_probe)(AVProbeData *);
367 /* read a whole image. 'alloc_cb' is called when the image size is
368 known so that the caller can allocate the image. If 'allo_cb'
369 returns non zero, then the parsing is aborted. Return '0' if
370 OK. */
371 int (*img_read)(ByteIOContext *,
372 int (*alloc_cb)(void *, AVImageInfo *info), void *);
373 /* write the image */
374 int supported_pixel_formats; /* mask of supported formats for output */
375 int (*img_write)(ByteIOContext *, AVImageInfo *);
376 int flags;
377 struct AVImageFormat *next;
378 } AVImageFormat;
379
380 void av_register_image_format(AVImageFormat *img_fmt);
381 AVImageFormat *av_probe_image_format(AVProbeData *pd);
382 AVImageFormat *guess_image_format(const char *filename);
383 enum CodecID av_guess_image2_codec(const char *filename);
384 int av_read_image(ByteIOContext *pb, const char *filename,
385 AVImageFormat *fmt,
386 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
387 int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
388
389 extern AVImageFormat *first_image_format;
390
391 extern AVImageFormat pnm_image_format;
392 extern AVImageFormat pbm_image_format;
393 extern AVImageFormat pgm_image_format;
394 extern AVImageFormat ppm_image_format;
395 extern AVImageFormat pam_image_format;
396 extern AVImageFormat pgmyuv_image_format;
397 extern AVImageFormat yuv_image_format;
398 #ifdef CONFIG_ZLIB
399 extern AVImageFormat png_image_format;
400 #endif
401 extern AVImageFormat jpeg_image_format;
402 extern AVImageFormat gif_image_format;
403 extern AVImageFormat sgi_image_format;
404
405 /* XXX: use automatic init with either ELF sections or C file parser */
406 /* modules */
407
408 /* mpeg.c */
409 extern AVInputFormat mpegps_demux;
410 int mpegps_init(void);
411
412 /* mpegts.c */
413 extern AVInputFormat mpegts_demux;
414 int mpegts_init(void);
415
416 /* rm.c */
417 int rm_init(void);
418
419 /* crc.c */
420 int crc_init(void);
421
422 /* img.c */
423 int img_init(void);
424
425 /* img2.c */
426 int img2_init(void);
427
428 /* asf.c */
429 int asf_init(void);
430
431 /* avienc.c */
432 int avienc_init(void);
433
434 /* avidec.c */
435 int avidec_init(void);
436
437 /* swf.c */
438 int swf_init(void);
439
440 /* mov.c */
441 int mov_init(void);
442
443 /* movenc.c */
444 int movenc_init(void);
445
446 /* flvenc.c */
447 int flvenc_init(void);
448
449 /* flvdec.c */
450 int flvdec_init(void);
451
452 /* jpeg.c */
453 int jpeg_init(void);
454
455 /* gif.c */
456 int gif_init(void);
457
458 /* au.c */
459 int au_init(void);
460
461 /* amr.c */
462 int amr_init(void);
463
464 /* wav.c */
465 int ff_wav_init(void);
466
467 /* mmf.c */
468 int ff_mmf_init(void);
469
470 /* raw.c */
471 int pcm_read_seek(AVFormatContext *s,
472 int stream_index, int64_t timestamp, int flags);
473 int raw_init(void);
474
475 /* mp3.c */
476 int mp3_init(void);
477
478 /* yuv4mpeg.c */
479 int yuv4mpeg_init(void);
480
481 /* ogg2.c */
482 int ogg_init(void);
483
484 /* ogg.c */
485 int libogg_init(void);
486
487 /* dv.c */
488 int ff_dv_init(void);
489
490 /* ffm.c */
491 int ffm_init(void);
492
493 /* rtsp.c */
494 extern AVInputFormat redir_demux;
495 int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
496
497 /* 4xm.c */
498 int fourxm_init(void);
499
500 /* psxstr.c */
501 int str_init(void);
502
503 /* idroq.c */
504 int roq_init(void);
505
506 /* ipmovie.c */
507 int ipmovie_init(void);
508
509 /* nut.c */
510 int nut_init(void);
511
512 /* wc3movie.c */
513 int wc3_init(void);
514
515 /* westwood.c */
516 int westwood_init(void);
517
518 /* segafilm.c */
519 int film_init(void);
520
521 /* idcin.c */
522 int idcin_init(void);
523
524 /* flic.c */
525 int flic_init(void);
526
527 /* sierravmd.c */
528 int vmd_init(void);
529
530 /* matroska.c */
531 int matroska_init(void);
532
533 /* sol.c */
534 int sol_init(void);
535
536 /* electronicarts.c */
537 int ea_init(void);
538
539 /* nsvdec.c */
540 int nsvdec_init(void);
541
542 #include "rtp.h"
543
544 #include "rtsp.h"
545
546 /* yuv4mpeg.c */
547 extern AVOutputFormat yuv4mpegpipe_oformat;
548
549 /* utils.c */
550 void av_register_input_format(AVInputFormat *format);
551 void av_register_output_format(AVOutputFormat *format);
552 AVOutputFormat *guess_stream_format(const char *short_name,
553 const char *filename, const char *mime_type);
554 AVOutputFormat *guess_format(const char *short_name,
555 const char *filename, const char *mime_type);
556 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
557 const char *filename, const char *mime_type, enum CodecType type);
558
559 void av_hex_dump(FILE *f, uint8_t *buf, int size);
560 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
561
562 void av_register_all(void);
563
564 typedef struct FifoBuffer {
565 uint8_t *buffer;
566 uint8_t *rptr, *wptr, *end;
567 } FifoBuffer;
568
569 int fifo_init(FifoBuffer *f, int size);
570 void fifo_free(FifoBuffer *f);
571 int fifo_size(FifoBuffer *f, uint8_t *rptr);
572 int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
573 void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
574 int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
575 void fifo_realloc(FifoBuffer *f, unsigned int size);
576
577 /* media file input */
578 AVInputFormat *av_find_input_format(const char *short_name);
579 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
580 int av_open_input_stream(AVFormatContext **ic_ptr,
581 ByteIOContext *pb, const char *filename,
582 AVInputFormat *fmt, AVFormatParameters *ap);
583 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
584 AVInputFormat *fmt,
585 int buf_size,
586 AVFormatParameters *ap);
587 /* no av_open for output, so applications will need this: */
588 AVFormatContext *av_alloc_format_context(void);
589
590 #define AVERROR_UNKNOWN (-1) /* unknown error */
591 #define AVERROR_IO (-2) /* i/o error */
592 #define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
593 #define AVERROR_INVALIDDATA (-4) /* invalid data found */
594 #define AVERROR_NOMEM (-5) /* not enough memory */
595 #define AVERROR_NOFMT (-6) /* unknown format */
596 #define AVERROR_NOTSUPP (-7) /* operation not supported */
597
598 int av_find_stream_info(AVFormatContext *ic);
599 int av_read_packet(AVFormatContext *s, AVPacket *pkt);
600 int av_read_frame(AVFormatContext *s, AVPacket *pkt);
601 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
602 int av_read_play(AVFormatContext *s);
603 int av_read_pause(AVFormatContext *s);
604 void av_close_input_file(AVFormatContext *s);
605 AVStream *av_new_stream(AVFormatContext *s, int id);
606 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
607 int pts_num, int pts_den);
608
609 #define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
610 #define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
611 #define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
612
613 int av_find_default_stream_index(AVFormatContext *s);
614 int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
615 int av_add_index_entry(AVStream *st,
616 int64_t pos, int64_t timestamp, int distance, int flags);
617 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
618
619 /* media file output */
620 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
621 int av_write_header(AVFormatContext *s);
622 int av_write_frame(AVFormatContext *s, AVPacket *pkt);
623 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
624
625 int av_write_trailer(AVFormatContext *s);
626
627 void dump_format(AVFormatContext *ic,
628 int index,
629 const char *url,
630 int is_output);
631 int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
632 int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
633 int64_t parse_date(const char *datestr, int duration);
634
635 int64_t av_gettime(void);
636
637 /* ffm specific for ffserver */
638 #define FFM_PACKET_SIZE 4096
639 offset_t ffm_read_write_index(int fd);
640 void ffm_write_write_index(int fd, offset_t pos);
641 void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
642
643 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
644
645 int get_frame_filename(char *buf, int buf_size,
646 const char *path, int number);
647 int filename_number_test(const char *filename);
648
649 /* grab specific */
650 int video_grab_init(void);
651 int audio_init(void);
652
653 /* DV1394 */
654 int dv1394_init(void);
655 int dc1394_init(void);
656
657 #ifdef HAVE_AV_CONFIG_H
658
659 #include "os_support.h"
660
661 int strstart(const char *str, const char *val, const char **ptr);
662 int stristart(const char *str, const char *val, const char **ptr);
663 void pstrcpy(char *buf, int buf_size, const char *str);
664 char *pstrcat(char *buf, int buf_size, const char *s);
665
666 void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
667
668 #ifdef __GNUC__
669 #define dynarray_add(tab, nb_ptr, elem)\
670 do {\
671 typeof(tab) _tab = (tab);\
672 typeof(elem) _elem = (elem);\
673 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
674 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
675 } while(0)
676 #else
677 #define dynarray_add(tab, nb_ptr, elem)\
678 do {\
679 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
680 } while(0)
681 #endif
682
683 time_t mktimegm(struct tm *tm);
684 struct tm *brktimegm(time_t secs, struct tm *tm);
685 const char *small_strptime(const char *p, const char *fmt,
686 struct tm *dt);
687
688 struct in_addr;
689 int resolve_host(struct in_addr *sin_addr, const char *hostname);
690
691 void url_split(char *proto, int proto_size,
692 char *authorization, int authorization_size,
693 char *hostname, int hostname_size,
694 int *port_ptr,
695 char *path, int path_size,
696 const char *url);
697
698 int match_ext(const char *filename, const char *extensions);
699
700 #endif /* HAVE_AV_CONFIG_H */
701
702 #ifdef __cplusplus
703 }
704 #endif
705
706 #endif /* AVFORMAT_H */
707