spelling fixes
[libav.git] / libavformat / avformat.h
CommitLineData
fb025625
FB
1#ifndef AVFORMAT_H
2#define AVFORMAT_H
de6d9b64 3
02d697aa
ZK
4#ifdef __cplusplus
5extern "C" {
6#endif
7
09730260 8#define LIBAVFORMAT_BUILD 4626
8026c3b5 9
7b7d86f1
FB
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)
4b1f4f23 13
f71869a4 14#include <time.h>
67070e4f 15#include <stdio.h> /* FILE */
de6d9b64
FB
16#include "avcodec.h"
17
de6d9b64
FB
18#include "avio.h"
19
20/* packet functions */
21
ee404803
FB
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
de6d9b64 30typedef struct AVPacket {
2692067a
MN
31 int64_t pts; ///< presentation time stamp in time_base units
32 int64_t dts; ///< decompression time stamp in time_base units
0c1a9eda 33 uint8_t *data;
6fa5a56c
FB
34 int size;
35 int stream_index;
36 int flags;
2692067a 37 int duration; ///< presentation duration in time_base units (0 if not available)
6fa5a56c
FB
38 void (*destruct)(struct AVPacket *);
39 void *priv;
2692067a 40 int64_t pos; ///< byte position in stream, -1 if unknown
de6d9b64 41} AVPacket;
6fa5a56c
FB
42#define PKT_FLAG_KEY 0x0001
43
63dd1377
MN
44void av_destruct_packet_nofree(AVPacket *pkt);
45
da24c5e3 46/* initialize optional fields of a packet */
6fa5a56c
FB
47static inline void av_init_packet(AVPacket *pkt)
48{
49 pkt->pts = AV_NOPTS_VALUE;
fb2758c8 50 pkt->dts = AV_NOPTS_VALUE;
2692067a 51 pkt->pos = -1;
fb2758c8 52 pkt->duration = 0;
6fa5a56c
FB
53 pkt->flags = 0;
54 pkt->stream_index = 0;
63dd1377 55 pkt->destruct= av_destruct_packet_nofree;
6fa5a56c 56}
de6d9b64
FB
57
58int av_new_packet(AVPacket *pkt, int size);
2692067a 59int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
fb2758c8 60int av_dup_packet(AVPacket *pkt);
6fa5a56c
FB
61
62/**
63 * Free a packet
64 *
65 * @param pkt packet to free
66 */
67static inline void av_free_packet(AVPacket *pkt)
68{
342474ab
MN
69 if (pkt && pkt->destruct) {
70 pkt->destruct(pkt);
71 }
6fa5a56c 72}
de6d9b64
FB
73
74/*************************************************/
916c80e9
FB
75/* fractional numbers for exact pts handling */
76
77/* the exact value of the fractional number is: 'val + num / den'. num
78 is assumed to be such as 0 <= num < den */
79typedef struct AVFrac {
0c1a9eda 80 int64_t val, num, den;
916c80e9
FB
81} AVFrac;
82
0c1a9eda
ZK
83void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
84void av_frac_add(AVFrac *f, int64_t incr);
85void av_frac_set(AVFrac *f, int64_t val);
916c80e9
FB
86
87/*************************************************/
b9a281db 88/* input/output formats */
de6d9b64
FB
89
90struct AVFormatContext;
b9a281db
FB
91
92/* this structure contains the data a format has to probe a file */
93typedef struct AVProbeData {
5c91a675 94 const char *filename;
b9a281db
FB
95 unsigned char *buf;
96 int buf_size;
97} AVProbeData;
98
99#define AVPROBE_SCORE_MAX 100
de6d9b64
FB
100
101typedef struct AVFormatParameters {
c0df9d75 102 AVRational time_base;
de6d9b64
FB
103 int sample_rate;
104 int channels;
105 int width;
106 int height;
4606ac8d 107 enum PixelFormat pix_fmt;
290c5fa6 108 struct AVImageFormat *image_format;
7f172339
FB
109 int channel; /* used to select dv channel */
110 const char *device; /* video4linux, audio or DV device */
e3ee3283 111 const char *standard; /* tv standard, NTSC, PAL, SECAM */
da24c5e3
FB
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 */
fb2758c8
FB
116 int initial_pause:1; /* do not begin to play the stream
117 immediately (RTSP only) */
5b6d5596
MN
118 enum CodecID video_codec_id;
119 enum CodecID audio_codec_id;
de6d9b64
FB
120} AVFormatParameters;
121
b9a281db
FB
122#define AVFMT_NOFILE 0x0001 /* no file should be opened */
123#define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
b9a281db 124#define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
fb025625
FB
125#define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
126 raw picture data */
c64d476c 127#define AVFMT_GLOBALHEADER 0x0040 /* format wants global header */
b9a281db
FB
128
129typedef struct AVOutputFormat {
de6d9b64
FB
130 const char *name;
131 const char *long_name;
132 const char *mime_type;
133 const char *extensions; /* comma separated extensions */
b9a281db
FB
134 /* size of private data so that it can be allocated in the wrapper */
135 int priv_data_size;
de6d9b64
FB
136 /* output support */
137 enum CodecID audio_codec; /* default audio codec */
138 enum CodecID video_codec; /* default video codec */
139 int (*write_header)(struct AVFormatContext *);
e928649b 140 int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
de6d9b64 141 int (*write_trailer)(struct AVFormatContext *);
c64d476c 142 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
b9a281db 143 int flags;
290c5fa6
FB
144 /* currently only used to set pixel format if not YUV420P */
145 int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
fe2d6fe2 146 int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
b9a281db
FB
147 /* private fields */
148 struct AVOutputFormat *next;
149} AVOutputFormat;
de6d9b64 150
b9a281db
FB
151typedef struct AVInputFormat {
152 const char *name;
153 const char *long_name;
154 /* size of private data so that it can be allocated in the wrapper */
155 int priv_data_size;
156 /* tell if a given file has a chance of being parsing by this format */
157 int (*read_probe)(AVProbeData *);
158 /* read the format header and initialize the AVFormatContext
de6d9b64 159 structure. Return 0 if OK. 'ap' if non NULL contains
b9a281db
FB
160 additionnal paramters. Only used in raw format right
161 now. 'av_new_stream' should be called to create new streams. */
de6d9b64
FB
162 int (*read_header)(struct AVFormatContext *,
163 AVFormatParameters *ap);
b9a281db
FB
164 /* read one packet and put it in 'pkt'. pts and flags are also
165 set. 'av_new_stream' can be called only if the flag
da24c5e3 166 AVFMTCTX_NOHEADER is used. */
de6d9b64
FB
167 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
168 /* close the stream. The AVFormatContext and AVStreams are not
169 freed by this function */
170 int (*read_close)(struct AVFormatContext *);
3ba1438d
MN
171 /**
172 * seek to a given timestamp relative to the frames in
173 * stream component stream_index
174 * @param stream_index must not be -1
175 * @param flags selects which direction should be preferred if no exact
176 * match is available
177 */
fb2758c8 178 int (*read_seek)(struct AVFormatContext *,
3ba1438d 179 int stream_index, int64_t timestamp, int flags);
8d14a25c
MN
180 /**
181 * gets the next timestamp in AV_TIME_BASE units.
182 */
183 int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
184 int64_t *pos, int64_t pos_limit);
da24c5e3 185 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
de6d9b64 186 int flags;
b9a281db
FB
187 /* if extensions are defined, then no probe is done. You should
188 usually not use extension format guessing because it is not
189 reliable enough */
190 const char *extensions;
191 /* general purpose read only value that the format can use */
192 int value;
fb2758c8
FB
193
194 /* start/resume playing - only meaningful if using a network based format
195 (RTSP) */
196 int (*read_play)(struct AVFormatContext *);
197
198 /* pause playing - only meaningful if using a network based format
199 (RTSP) */
200 int (*read_pause)(struct AVFormatContext *);
201
b9a281db
FB
202 /* private fields */
203 struct AVInputFormat *next;
204} AVInputFormat;
de6d9b64 205
fb2758c8
FB
206typedef struct AVIndexEntry {
207 int64_t pos;
208 int64_t timestamp;
209#define AVINDEX_KEYFRAME 0x0001
b754978a 210/* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */
fb2758c8 211 int flags;
3e9245a9 212 int min_distance; /* min distance between this and the previous keyframe, used to avoid unneeded searching */
fb2758c8
FB
213} AVIndexEntry;
214
f3356e9c
MN
215enum AVDiscard{
216//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
217 AVDISCARD_NONE =-16, ///< discard nothing
218 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
219 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
220 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
221 AVDISCARD_ALL = 48, ///< discard all
222};
223
de6d9b64 224typedef struct AVStream {
b9a281db
FB
225 int index; /* stream index in AVFormatContext */
226 int id; /* format specific stream id */
de6d9b64 227 AVCodecContext codec; /* codec context */
c0df9d75 228 AVRational r_frame_rate; /* real frame rate of the stream */
de6d9b64 229 void *priv_data;
b9a281db 230 /* internal data used in av_find_stream_info() */
fb2758c8
FB
231 int64_t codec_info_duration;
232 int codec_info_nb_frames;
da24c5e3 233 /* encoding: PTS generation when outputing stream */
1e51d801 234 AVFrac pts;
9ee91c2f
MN
235 AVRational time_base;
236 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
a48b7a6b
FB
237 /* ffmpeg.c private use */
238 int stream_copy; /* if TRUE, just copy stream */
f3356e9c 239 enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
b4aea108 240 //FIXME move stuff to a flags field?
1e491e29
MN
241 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
242 * MN:dunno if thats the right place, for it */
243 float quality;
ee404803
FB
244 /* decoding: position of the first frame of the component, in
245 AV_TIME_BASE fractional seconds. */
246 int64_t start_time;
247 /* decoding: duration of the stream, in AV_TIME_BASE fractional
248 seconds. */
249 int64_t duration;
fb2758c8 250
09730260
FB
251 char language[4]; /* ISO 639 3-letter language code (empty string if undefined) */
252
fb2758c8
FB
253 /* av_read_frame() support */
254 int need_parsing;
255 struct AVCodecParserContext *parser;
6ec87caa 256
fb2758c8
FB
257 int64_t cur_dts;
258 int last_IP_duration;
77405fc8 259 int64_t last_IP_pts;
fb2758c8
FB
260 /* av_seek_frame() support */
261 AVIndexEntry *index_entries; /* only used if the format does not
262 support seeking natively */
263 int nb_index_entries;
264 int index_entries_allocated_size;
de6d9b64
FB
265} AVStream;
266
da24c5e3
FB
267#define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
268 (streams are added dynamically) */
269
de6d9b64
FB
270#define MAX_STREAMS 20
271
272/* format I/O context */
273typedef struct AVFormatContext {
7fea94ce 274 const AVClass *av_class; /* set by av_alloc_format_context */
b9a281db
FB
275 /* can only be iformat or oformat, not both at the same time */
276 struct AVInputFormat *iformat;
277 struct AVOutputFormat *oformat;
de6d9b64
FB
278 void *priv_data;
279 ByteIOContext pb;
280 int nb_streams;
281 AVStream *streams[MAX_STREAMS];
282 char filename[1024]; /* input or output filename */
283 /* stream info */
4568325a 284 int64_t timestamp;
de6d9b64
FB
285 char title[512];
286 char author[512];
287 char copyright[512];
288 char comment[512];
6a58e151
FB
289 char album[512];
290 int year; /* ID3 year, 0 if none */
291 int track; /* track number, 0 if none */
292 char genre[32]; /* ID3 genre */
293
da24c5e3 294 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
916c80e9 295 /* private data for pts handling (do not modify directly) */
de6d9b64
FB
296 /* This buffer is only needed when packets were already buffered but
297 not decoded, for example to get the codec parameters in mpeg
298 streams */
ee404803
FB
299 struct AVPacketList *packet_buffer;
300
301 /* decoding: position of the first frame of the component, in
302 AV_TIME_BASE fractional seconds. NEVER set this value directly:
303 it is deduced from the AVStream values. */
304 int64_t start_time;
305 /* decoding: duration of the stream, in AV_TIME_BASE fractional
306 seconds. NEVER set this value directly: it is deduced from the
307 AVStream values. */
308 int64_t duration;
309 /* decoding: total file size. 0 if unknown */
310 int64_t file_size;
311 /* decoding: total stream bitrate in bit/s, 0 if not
312 available. Never set it directly if the file_size and the
313 duration are known as ffmpeg can compute it automatically. */
314 int bit_rate;
fb2758c8
FB
315
316 /* av_read_frame() support */
317 AVStream *cur_st;
318 const uint8_t *cur_ptr;
319 int cur_len;
320 AVPacket cur_pkt;
321
fb2758c8
FB
322 /* av_seek_frame() support */
323 int64_t data_offset; /* offset of the first packet */
324 int index_built;
2db3c638
MN
325
326 int mux_rate;
327 int packet_size;
17c88cb0
MN
328 int preload;
329 int max_delay;
de6d9b64
FB
330} AVFormatContext;
331
332typedef struct AVPacketList {
333 AVPacket pkt;
334 struct AVPacketList *next;
335} AVPacketList;
336
b9a281db
FB
337extern AVInputFormat *first_iformat;
338extern AVOutputFormat *first_oformat;
de6d9b64 339
290c5fa6
FB
340/* still image support */
341struct AVInputImageContext;
342typedef struct AVInputImageContext AVInputImageContext;
343
344typedef struct AVImageInfo {
345 enum PixelFormat pix_fmt; /* requested pixel format */
346 int width; /* requested width */
347 int height; /* requested height */
7e2e1abf 348 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
290c5fa6
FB
349 AVPicture pict; /* returned allocated image */
350} AVImageInfo;
351
3b1a27e0 352/* AVImageFormat.flags field constants */
7e2e1abf 353#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
3b1a27e0 354
290c5fa6
FB
355typedef struct AVImageFormat {
356 const char *name;
357 const char *extensions;
358 /* tell if a given file has a chance of being parsing by this format */
359 int (*img_probe)(AVProbeData *);
360 /* read a whole image. 'alloc_cb' is called when the image size is
361 known so that the caller can allocate the image. If 'allo_cb'
362 returns non zero, then the parsing is aborted. Return '0' if
363 OK. */
364 int (*img_read)(ByteIOContext *,
365 int (*alloc_cb)(void *, AVImageInfo *info), void *);
366 /* write the image */
367 int supported_pixel_formats; /* mask of supported formats for output */
368 int (*img_write)(ByteIOContext *, AVImageInfo *);
3b1a27e0 369 int flags;
290c5fa6
FB
370 struct AVImageFormat *next;
371} AVImageFormat;
372
373void av_register_image_format(AVImageFormat *img_fmt);
374AVImageFormat *av_probe_image_format(AVProbeData *pd);
375AVImageFormat *guess_image_format(const char *filename);
5b6d5596 376enum CodecID av_guess_image2_codec(const char *filename);
290c5fa6
FB
377int av_read_image(ByteIOContext *pb, const char *filename,
378 AVImageFormat *fmt,
379 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
380int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
381
382extern AVImageFormat *first_image_format;
383
384extern AVImageFormat pnm_image_format;
385extern AVImageFormat pbm_image_format;
386extern AVImageFormat pgm_image_format;
387extern AVImageFormat ppm_image_format;
8975ba81 388extern AVImageFormat pam_image_format;
290c5fa6
FB
389extern AVImageFormat pgmyuv_image_format;
390extern AVImageFormat yuv_image_format;
3a13f6bd 391#ifdef CONFIG_ZLIB
0e04e4e9 392extern AVImageFormat png_image_format;
3a13f6bd 393#endif
0250738f 394extern AVImageFormat jpeg_image_format;
cdc90af0 395extern AVImageFormat gif_image_format;
6a91ec51 396extern AVImageFormat sgi_image_format;
290c5fa6 397
b9a281db
FB
398/* XXX: use automatic init with either ELF sections or C file parser */
399/* modules */
de6d9b64 400
b9a281db 401/* mpeg.c */
ee404803 402extern AVInputFormat mpegps_demux;
b9a281db
FB
403int mpegps_init(void);
404
405/* mpegts.c */
406extern AVInputFormat mpegts_demux;
407int mpegts_init(void);
de6d9b64 408
b9a281db
FB
409/* rm.c */
410int rm_init(void);
411
412/* crc.c */
413int crc_init(void);
414
415/* img.c */
416int img_init(void);
417
03cfe134
MN
418/* img2.c */
419int img2_init(void);
420
b9a281db
FB
421/* asf.c */
422int asf_init(void);
de6d9b64
FB
423
424/* avienc.c */
b9a281db 425int avienc_init(void);
de6d9b64 426
b9a281db
FB
427/* avidec.c */
428int avidec_init(void);
6cea494e 429
b9a281db
FB
430/* swf.c */
431int swf_init(void);
432
433/* mov.c */
434int mov_init(void);
de6d9b64 435
1cb5f7fd
MN
436/* movenc.c */
437int movenc_init(void);
438
d4f5d74a
GM
439/* flvenc.c */
440int flvenc_init(void);
441
442/* flvdec.c */
443int flvdec_init(void);
444
b9a281db
FB
445/* jpeg.c */
446int jpeg_init(void);
de6d9b64 447
6cea494e 448/* gif.c */
b9a281db
FB
449int gif_init(void);
450
6cea494e 451/* au.c */
b9a281db 452int au_init(void);
6cea494e 453
bc634f6f
ZK
454/* amr.c */
455int amr_init(void);
456
de6d9b64 457/* wav.c */
c3775e54 458int ff_wav_init(void);
de6d9b64
FB
459
460/* raw.c */
fb2758c8 461int pcm_read_seek(AVFormatContext *s,
7b3c1382 462 int stream_index, int64_t timestamp, int flags);
b9a281db 463int raw_init(void);
de6d9b64 464
6a58e151
FB
465/* mp3.c */
466int mp3_init(void);
467
2864dfd5
RFI
468/* yuv4mpeg.c */
469int yuv4mpeg_init(void);
470
9146ca37 471/* ogg2.c */
81e0d0b4
MH
472int ogg_init(void);
473
9146ca37
MR
474/* ogg.c */
475int libogg_init(void);
476
f20dca40 477/* dv.c */
c3775e54 478int ff_dv_init(void);
f20dca40 479
de6d9b64 480/* ffm.c */
b9a281db 481int ffm_init(void);
de6d9b64 482
fb025625
FB
483/* rtsp.c */
484extern AVInputFormat redir_demux;
485int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
486
3c96b4ef
MM
487/* 4xm.c */
488int fourxm_init(void);
489
3f16d933
MM
490/* psxstr.c */
491int str_init(void);
492
3ef8be2b
MM
493/* idroq.c */
494int roq_init(void);
495
496/* ipmovie.c */
497int ipmovie_init(void);
498
3aa180b8
AB
499/* nut.c */
500int nut_init(void);
501
493645eb
MM
502/* wc3movie.c */
503int wc3_init(void);
504
2fdf638b
MM
505/* westwood.c */
506int westwood_init(void);
507
508/* segafilm.c */
509int film_init(void);
510
4120a53a
MM
511/* idcin.c */
512int idcin_init(void);
513
42cad81a
MM
514/* flic.c */
515int flic_init(void);
516
a7eb3c8d
MM
517/* sierravmd.c */
518int vmd_init(void);
519
08abe0fd
MN
520/* matroska.c */
521int matroska_init(void);
522
d08d7142
MM
523/* sol.c */
524int sol_init(void);
525
ad81a9fe
MM
526/* electronicarts.c */
527int ea_init(void);
528
27d5f18f
FR
529/* nsvdec.c */
530int nsvdec_init(void);
531
fb025625
FB
532#include "rtp.h"
533
534#include "rtsp.h"
535
290c5fa6
FB
536/* yuv4mpeg.c */
537extern AVOutputFormat yuv4mpegpipe_oformat;
538
b9a281db 539/* utils.c */
b9a281db
FB
540void av_register_input_format(AVInputFormat *format);
541void av_register_output_format(AVOutputFormat *format);
36ada60c
PG
542AVOutputFormat *guess_stream_format(const char *short_name,
543 const char *filename, const char *mime_type);
b9a281db
FB
544AVOutputFormat *guess_format(const char *short_name,
545 const char *filename, const char *mime_type);
5b6d5596
MN
546enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
547 const char *filename, const char *mime_type, enum CodecType type);
de6d9b64 548
fb2758c8
FB
549void av_hex_dump(FILE *f, uint8_t *buf, int size);
550void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
de6d9b64 551
94988531 552void av_register_all(void);
de6d9b64
FB
553
554typedef struct FifoBuffer {
0c1a9eda
ZK
555 uint8_t *buffer;
556 uint8_t *rptr, *wptr, *end;
de6d9b64
FB
557} FifoBuffer;
558
559int fifo_init(FifoBuffer *f, int size);
560void fifo_free(FifoBuffer *f);
0c1a9eda
ZK
561int fifo_size(FifoBuffer *f, uint8_t *rptr);
562int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
563void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
7000a175 564int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
568e18b1 565void fifo_realloc(FifoBuffer *f, unsigned int size);
de6d9b64 566
b9a281db
FB
567/* media file input */
568AVInputFormat *av_find_input_format(const char *short_name);
94988531 569AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
da24c5e3
FB
570int av_open_input_stream(AVFormatContext **ic_ptr,
571 ByteIOContext *pb, const char *filename,
572 AVInputFormat *fmt, AVFormatParameters *ap);
b9a281db
FB
573int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
574 AVInputFormat *fmt,
575 int buf_size,
576 AVFormatParameters *ap);
bc874dae
MB
577/* no av_open for output, so applications will need this: */
578AVFormatContext *av_alloc_format_context(void);
b9a281db
FB
579
580#define AVERROR_UNKNOWN (-1) /* unknown error */
581#define AVERROR_IO (-2) /* i/o error */
582#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
583#define AVERROR_INVALIDDATA (-4) /* invalid data found */
584#define AVERROR_NOMEM (-5) /* not enough memory */
585#define AVERROR_NOFMT (-6) /* unknown format */
fb2758c8
FB
586#define AVERROR_NOTSUPP (-7) /* operation not supported */
587
b9a281db 588int av_find_stream_info(AVFormatContext *ic);
de6d9b64 589int av_read_packet(AVFormatContext *s, AVPacket *pkt);
fb2758c8 590int av_read_frame(AVFormatContext *s, AVPacket *pkt);
3ba1438d 591int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
fb2758c8
FB
592int av_read_play(AVFormatContext *s);
593int av_read_pause(AVFormatContext *s);
de6d9b64 594void av_close_input_file(AVFormatContext *s);
b9a281db 595AVStream *av_new_stream(AVFormatContext *s, int id);
9ee91c2f 596void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9 597 int pts_num, int pts_den);
de6d9b64 598
3ba1438d
MN
599#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
600#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
27a5fe5f 601#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
3ba1438d 602
b754978a 603int av_find_default_stream_index(AVFormatContext *s);
dc56fc38 604int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
3e9245a9
MN
605int av_add_index_entry(AVStream *st,
606 int64_t pos, int64_t timestamp, int distance, int flags);
3ba1438d 607int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
b754978a 608
b9a281db 609/* media file output */
290c5fa6 610int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
b9a281db 611int av_write_header(AVFormatContext *s);
e928649b 612int av_write_frame(AVFormatContext *s, AVPacket *pkt);
3c895fc0 613int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
e928649b 614
b9a281db 615int av_write_trailer(AVFormatContext *s);
de6d9b64
FB
616
617void dump_format(AVFormatContext *ic,
618 int index,
619 const char *url,
620 int is_output);
621int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
445f1b83 622int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
0c1a9eda 623int64_t parse_date(const char *datestr, int duration);
de6d9b64 624
0c1a9eda 625int64_t av_gettime(void);
94988531 626
de6d9b64
FB
627/* ffm specific for ffserver */
628#define FFM_PACKET_SIZE 4096
629offset_t ffm_read_write_index(int fd);
630void ffm_write_write_index(int fd, offset_t pos);
631void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
632
633int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
634
813cae4b
FB
635int get_frame_filename(char *buf, int buf_size,
636 const char *path, int number);
b9a281db 637int filename_number_test(const char *filename);
96baaa6a 638
b9a281db
FB
639/* grab specific */
640int video_grab_init(void);
641int audio_init(void);
96baaa6a 642
86fd51fb
FB
643/* DV1394 */
644int dv1394_init(void);
f02be79d 645int dc1394_init(void);
fb025625
FB
646
647#ifdef HAVE_AV_CONFIG_H
f71869a4
FB
648
649#include "os_support.h"
650
fb025625
FB
651int strstart(const char *str, const char *val, const char **ptr);
652int stristart(const char *str, const char *val, const char **ptr);
653void pstrcpy(char *buf, int buf_size, const char *str);
654char *pstrcat(char *buf, int buf_size, const char *s);
fb025625 655
39f472c3
FB
656void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
657
e4e70d2e 658#ifdef __GNUC__
39f472c3
FB
659#define dynarray_add(tab, nb_ptr, elem)\
660do {\
661 typeof(tab) _tab = (tab);\
662 typeof(elem) _elem = (elem);\
663 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
664 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
665} while(0)
e4e70d2e
FH
666#else
667#define dynarray_add(tab, nb_ptr, elem)\
668do {\
669 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
670} while(0)
671#endif
39f472c3 672
f71869a4 673time_t mktimegm(struct tm *tm);
0c9fc6e1 674struct tm *brktimegm(time_t secs, struct tm *tm);
f71869a4
FB
675const char *small_strptime(const char *p, const char *fmt,
676 struct tm *dt);
677
fb025625
FB
678struct in_addr;
679int resolve_host(struct in_addr *sin_addr, const char *hostname);
680
681void url_split(char *proto, int proto_size,
6ba5cbc6 682 char *authorization, int authorization_size,
fb025625
FB
683 char *hostname, int hostname_size,
684 int *port_ptr,
685 char *path, int path_size,
686 const char *url);
687
a941f391
FB
688int match_ext(const char *filename, const char *extensions);
689
fb025625
FB
690#endif /* HAVE_AV_CONFIG_H */
691
02d697aa
ZK
692#ifdef __cplusplus
693}
694#endif
695
fb025625 696#endif /* AVFORMAT_H */
f3356e9c 697