bump version numbers and update docs for adts aac support
[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 ((50<<16)+(1<<8)+0)
9 #define LIBAVFORMAT_VERSION 50.1.0
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
233 /**
234 * this is the fundamental unit of time (in seconds) in terms
235 * of which frame timestamps are represented. for fixed-fps content,
236 * timebase should be 1/framerate and timestamp increments should be
237 * identically 1.
238 */
239 AVRational time_base;
240 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
241 /* ffmpeg.c private use */
242 int stream_copy; /* if TRUE, just copy stream */
243 enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
244 //FIXME move stuff to a flags field?
245 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
246 * MN:dunno if thats the right place, for it */
247 float quality;
248 /* decoding: position of the first frame of the component, in
249 AV_TIME_BASE fractional seconds. */
250 int64_t start_time;
251 /* decoding: duration of the stream, in AV_TIME_BASE fractional
252 seconds. */
253 int64_t duration;
254
255 char language[4]; /* ISO 639 3-letter language code (empty string if undefined) */
256
257 /* av_read_frame() support */
258 int need_parsing; ///< 1->full parsing needed, 2->only parse headers dont repack
259 struct AVCodecParserContext *parser;
260
261 int64_t cur_dts;
262 int last_IP_duration;
263 int64_t last_IP_pts;
264 /* av_seek_frame() support */
265 AVIndexEntry *index_entries; /* only used if the format does not
266 support seeking natively */
267 int nb_index_entries;
268 int index_entries_allocated_size;
269
270 int64_t nb_frames; ///< number of frames in this stream if known or 0
271 } AVStream;
272
273 #define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
274 (streams are added dynamically) */
275
276 #define MAX_STREAMS 20
277
278 /* format I/O context */
279 typedef struct AVFormatContext {
280 const AVClass *av_class; /* set by av_alloc_format_context */
281 /* can only be iformat or oformat, not both at the same time */
282 struct AVInputFormat *iformat;
283 struct AVOutputFormat *oformat;
284 void *priv_data;
285 ByteIOContext pb;
286 int nb_streams;
287 AVStream *streams[MAX_STREAMS];
288 char filename[1024]; /* input or output filename */
289 /* stream info */
290 int64_t timestamp;
291 char title[512];
292 char author[512];
293 char copyright[512];
294 char comment[512];
295 char album[512];
296 int year; /* ID3 year, 0 if none */
297 int track; /* track number, 0 if none */
298 char genre[32]; /* ID3 genre */
299
300 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
301 /* private data for pts handling (do not modify directly) */
302 /* This buffer is only needed when packets were already buffered but
303 not decoded, for example to get the codec parameters in mpeg
304 streams */
305 struct AVPacketList *packet_buffer;
306
307 /* decoding: position of the first frame of the component, in
308 AV_TIME_BASE fractional seconds. NEVER set this value directly:
309 it is deduced from the AVStream values. */
310 int64_t start_time;
311 /* decoding: duration of the stream, in AV_TIME_BASE fractional
312 seconds. NEVER set this value directly: it is deduced from the
313 AVStream values. */
314 int64_t duration;
315 /* decoding: total file size. 0 if unknown */
316 int64_t file_size;
317 /* decoding: total stream bitrate in bit/s, 0 if not
318 available. Never set it directly if the file_size and the
319 duration are known as ffmpeg can compute it automatically. */
320 int bit_rate;
321
322 /* av_read_frame() support */
323 AVStream *cur_st;
324 const uint8_t *cur_ptr;
325 int cur_len;
326 AVPacket cur_pkt;
327
328 /* av_seek_frame() support */
329 int64_t data_offset; /* offset of the first packet */
330 int index_built;
331
332 int mux_rate;
333 int packet_size;
334 int preload;
335 int max_delay;
336
337 #define AVFMT_NOOUTPUTLOOP -1
338 #define AVFMT_INFINITEOUTPUTLOOP 0
339 /* number of times to loop output in formats that support it */
340 int loop_output;
341
342 int flags;
343 #define AVFMT_FLAG_GENPTS 0x0001 ///< generate pts if missing even if it requires parsing future frames
344 } AVFormatContext;
345
346 typedef struct AVPacketList {
347 AVPacket pkt;
348 struct AVPacketList *next;
349 } AVPacketList;
350
351 extern AVInputFormat *first_iformat;
352 extern AVOutputFormat *first_oformat;
353
354 /* still image support */
355 struct AVInputImageContext;
356 typedef struct AVInputImageContext AVInputImageContext;
357
358 typedef struct AVImageInfo {
359 enum PixelFormat pix_fmt; /* requested pixel format */
360 int width; /* requested width */
361 int height; /* requested height */
362 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
363 AVPicture pict; /* returned allocated image */
364 } AVImageInfo;
365
366 /* AVImageFormat.flags field constants */
367 #define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
368
369 typedef struct AVImageFormat {
370 const char *name;
371 const char *extensions;
372 /* tell if a given file has a chance of being parsing by this format */
373 int (*img_probe)(AVProbeData *);
374 /* read a whole image. 'alloc_cb' is called when the image size is
375 known so that the caller can allocate the image. If 'allo_cb'
376 returns non zero, then the parsing is aborted. Return '0' if
377 OK. */
378 int (*img_read)(ByteIOContext *,
379 int (*alloc_cb)(void *, AVImageInfo *info), void *);
380 /* write the image */
381 int supported_pixel_formats; /* mask of supported formats for output */
382 int (*img_write)(ByteIOContext *, AVImageInfo *);
383 int flags;
384 struct AVImageFormat *next;
385 } AVImageFormat;
386
387 void av_register_image_format(AVImageFormat *img_fmt);
388 AVImageFormat *av_probe_image_format(AVProbeData *pd);
389 AVImageFormat *guess_image_format(const char *filename);
390 enum CodecID av_guess_image2_codec(const char *filename);
391 int av_read_image(ByteIOContext *pb, const char *filename,
392 AVImageFormat *fmt,
393 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
394 int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
395
396 extern AVImageFormat *first_image_format;
397
398 extern AVImageFormat pnm_image_format;
399 extern AVImageFormat pbm_image_format;
400 extern AVImageFormat pgm_image_format;
401 extern AVImageFormat ppm_image_format;
402 extern AVImageFormat pam_image_format;
403 extern AVImageFormat pgmyuv_image_format;
404 extern AVImageFormat yuv_image_format;
405 #ifdef CONFIG_ZLIB
406 extern AVImageFormat png_image_format;
407 #endif
408 extern AVImageFormat jpeg_image_format;
409 extern AVImageFormat gif_image_format;
410 extern AVImageFormat sgi_image_format;
411
412 /* XXX: use automatic init with either ELF sections or C file parser */
413 /* modules */
414
415 /* mpeg.c */
416 extern AVInputFormat mpegps_demux;
417 int mpegps_init(void);
418
419 /* mpegts.c */
420 extern AVInputFormat mpegts_demux;
421 int mpegts_init(void);
422
423 /* rm.c */
424 int rm_init(void);
425
426 /* crc.c */
427 int crc_init(void);
428
429 /* img.c */
430 int img_init(void);
431
432 /* img2.c */
433 int img2_init(void);
434
435 /* asf.c */
436 int asf_init(void);
437
438 /* avienc.c */
439 int avienc_init(void);
440
441 /* avidec.c */
442 int avidec_init(void);
443
444 /* swf.c */
445 int swf_init(void);
446
447 /* mov.c */
448 int mov_init(void);
449
450 /* movenc.c */
451 int movenc_init(void);
452
453 /* flvenc.c */
454 int flvenc_init(void);
455
456 /* flvdec.c */
457 int flvdec_init(void);
458
459 /* jpeg.c */
460 int jpeg_init(void);
461
462 /* gif.c */
463 int gif_init(void);
464
465 /* au.c */
466 int au_init(void);
467
468 /* amr.c */
469 int amr_init(void);
470
471 /* wav.c */
472 int ff_wav_init(void);
473
474 /* mmf.c */
475 int ff_mmf_init(void);
476
477 /* raw.c */
478 int pcm_read_seek(AVFormatContext *s,
479 int stream_index, int64_t timestamp, int flags);
480 int raw_init(void);
481
482 /* mp3.c */
483 int mp3_init(void);
484
485 /* yuv4mpeg.c */
486 int yuv4mpeg_init(void);
487
488 /* ogg2.c */
489 int ogg_init(void);
490
491 /* ogg.c */
492 int libogg_init(void);
493
494 /* dv.c */
495 int ff_dv_init(void);
496
497 /* ffm.c */
498 int ffm_init(void);
499
500 /* rtsp.c */
501 extern AVInputFormat redir_demux;
502 int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
503
504 /* 4xm.c */
505 int fourxm_init(void);
506
507 /* psxstr.c */
508 int str_init(void);
509
510 /* idroq.c */
511 int roq_init(void);
512
513 /* ipmovie.c */
514 int ipmovie_init(void);
515
516 /* nut.c */
517 int nut_init(void);
518
519 /* wc3movie.c */
520 int wc3_init(void);
521
522 /* westwood.c */
523 int westwood_init(void);
524
525 /* segafilm.c */
526 int film_init(void);
527
528 /* idcin.c */
529 int idcin_init(void);
530
531 /* flic.c */
532 int flic_init(void);
533
534 /* sierravmd.c */
535 int vmd_init(void);
536
537 /* matroska.c */
538 int matroska_init(void);
539
540 /* sol.c */
541 int sol_init(void);
542
543 /* electronicarts.c */
544 int ea_init(void);
545
546 /* nsvdec.c */
547 int nsvdec_init(void);
548
549 /* daud.c */
550 int daud_init(void);
551
552 /* aiff.c */
553 int ff_aiff_init(void);
554
555 #include "rtp.h"
556
557 #include "rtsp.h"
558
559 /* yuv4mpeg.c */
560 extern AVOutputFormat yuv4mpegpipe_oformat;
561
562 /* utils.c */
563 void av_register_input_format(AVInputFormat *format);
564 void av_register_output_format(AVOutputFormat *format);
565 AVOutputFormat *guess_stream_format(const char *short_name,
566 const char *filename, const char *mime_type);
567 AVOutputFormat *guess_format(const char *short_name,
568 const char *filename, const char *mime_type);
569 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
570 const char *filename, const char *mime_type, enum CodecType type);
571
572 void av_hex_dump(FILE *f, uint8_t *buf, int size);
573 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
574
575 void av_register_all(void);
576
577 typedef struct FifoBuffer {
578 uint8_t *buffer;
579 uint8_t *rptr, *wptr, *end;
580 } FifoBuffer;
581
582 int fifo_init(FifoBuffer *f, int size);
583 void fifo_free(FifoBuffer *f);
584 int fifo_size(FifoBuffer *f, uint8_t *rptr);
585 int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
586 void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
587 int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
588 void fifo_realloc(FifoBuffer *f, unsigned int size);
589
590 /* media file input */
591 AVInputFormat *av_find_input_format(const char *short_name);
592 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
593 int av_open_input_stream(AVFormatContext **ic_ptr,
594 ByteIOContext *pb, const char *filename,
595 AVInputFormat *fmt, AVFormatParameters *ap);
596 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
597 AVInputFormat *fmt,
598 int buf_size,
599 AVFormatParameters *ap);
600 /* no av_open for output, so applications will need this: */
601 AVFormatContext *av_alloc_format_context(void);
602
603 #define AVERROR_UNKNOWN (-1) /* unknown error */
604 #define AVERROR_IO (-2) /* i/o error */
605 #define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
606 #define AVERROR_INVALIDDATA (-4) /* invalid data found */
607 #define AVERROR_NOMEM (-5) /* not enough memory */
608 #define AVERROR_NOFMT (-6) /* unknown format */
609 #define AVERROR_NOTSUPP (-7) /* operation not supported */
610
611 int av_find_stream_info(AVFormatContext *ic);
612 int av_read_packet(AVFormatContext *s, AVPacket *pkt);
613 int av_read_frame(AVFormatContext *s, AVPacket *pkt);
614 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
615 int av_read_play(AVFormatContext *s);
616 int av_read_pause(AVFormatContext *s);
617 void av_close_input_file(AVFormatContext *s);
618 AVStream *av_new_stream(AVFormatContext *s, int id);
619 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
620 int pts_num, int pts_den);
621
622 #define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
623 #define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
624 #define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
625
626 int av_find_default_stream_index(AVFormatContext *s);
627 int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
628 int av_add_index_entry(AVStream *st,
629 int64_t pos, int64_t timestamp, int distance, int flags);
630 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
631
632 /* media file output */
633 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
634 int av_write_header(AVFormatContext *s);
635 int av_write_frame(AVFormatContext *s, AVPacket *pkt);
636 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
637
638 int av_write_trailer(AVFormatContext *s);
639
640 void dump_format(AVFormatContext *ic,
641 int index,
642 const char *url,
643 int is_output);
644 int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
645 int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
646 int64_t parse_date(const char *datestr, int duration);
647
648 int64_t av_gettime(void);
649
650 /* ffm specific for ffserver */
651 #define FFM_PACKET_SIZE 4096
652 offset_t ffm_read_write_index(int fd);
653 void ffm_write_write_index(int fd, offset_t pos);
654 void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
655
656 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
657
658 int get_frame_filename(char *buf, int buf_size,
659 const char *path, int number);
660 int filename_number_test(const char *filename);
661
662 /* grab specific */
663 int video_grab_init(void);
664 int audio_init(void);
665
666 /* DV1394 */
667 int dv1394_init(void);
668 int dc1394_init(void);
669
670 #ifdef HAVE_AV_CONFIG_H
671
672 #include "os_support.h"
673
674 int strstart(const char *str, const char *val, const char **ptr);
675 int stristart(const char *str, const char *val, const char **ptr);
676 void pstrcpy(char *buf, int buf_size, const char *str);
677 char *pstrcat(char *buf, int buf_size, const char *s);
678
679 void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
680
681 #ifdef __GNUC__
682 #define dynarray_add(tab, nb_ptr, elem)\
683 do {\
684 typeof(tab) _tab = (tab);\
685 typeof(elem) _elem = (elem);\
686 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
687 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
688 } while(0)
689 #else
690 #define dynarray_add(tab, nb_ptr, elem)\
691 do {\
692 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
693 } while(0)
694 #endif
695
696 time_t mktimegm(struct tm *tm);
697 struct tm *brktimegm(time_t secs, struct tm *tm);
698 const char *small_strptime(const char *p, const char *fmt,
699 struct tm *dt);
700
701 struct in_addr;
702 int resolve_host(struct in_addr *sin_addr, const char *hostname);
703
704 void url_split(char *proto, int proto_size,
705 char *authorization, int authorization_size,
706 char *hostname, int hostname_size,
707 int *port_ptr,
708 char *path, int path_size,
709 const char *url);
710
711 int match_ext(const char *filename, const char *extensions);
712
713 #endif /* HAVE_AV_CONFIG_H */
714
715 #ifdef __cplusplus
716 }
717 #endif
718
719 #endif /* AVFORMAT_H */
720