ffplay crashes patch by (Ivan Wong: email, ivanwong info)
[libav.git] / libavformat / avformat.h
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1#ifndef AVFORMAT_H
2#define AVFORMAT_H
de6d9b64 3
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4#ifdef __cplusplus
5extern "C" {
6#endif
7
8108551a 8#define LIBAVFORMAT_BUILD 4627
8026c3b5 9
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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 */
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16#include "avcodec.h"
17
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18#include "avio.h"
19
20/* packet functions */
21
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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 {
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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;
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34 int size;
35 int stream_index;
36 int flags;
2692067a 37 int duration; ///< presentation duration in time_base units (0 if not available)
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38 void (*destruct)(struct AVPacket *);
39 void *priv;
2692067a 40 int64_t pos; ///< byte position in stream, -1 if unknown
de6d9b64 41} AVPacket;
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42#define PKT_FLAG_KEY 0x0001
43
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44void av_destruct_packet_nofree(AVPacket *pkt);
45
da24c5e3 46/* initialize optional fields of a packet */
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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;
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53 pkt->flags = 0;
54 pkt->stream_index = 0;
63dd1377 55 pkt->destruct= av_destruct_packet_nofree;
6fa5a56c 56}
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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);
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61
62/**
63 * Free a packet
64 *
65 * @param pkt packet to free
66 */
67static inline void av_free_packet(AVPacket *pkt)
68{
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69 if (pkt && pkt->destruct) {
70 pkt->destruct(pkt);
71 }
6fa5a56c 72}
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73
74/*************************************************/
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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;
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81} AVFrac;
82
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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);
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86
87/*************************************************/
b9a281db 88/* input/output formats */
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89
90struct AVFormatContext;
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91
92/* this structure contains the data a format has to probe a file */
93typedef struct AVProbeData {
5c91a675 94 const char *filename;
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95 unsigned char *buf;
96 int buf_size;
97} AVProbeData;
98
99#define AVPROBE_SCORE_MAX 100
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100
101typedef struct AVFormatParameters {
c0df9d75 102 AVRational time_base;
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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;
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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 */
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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 */
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116 int initial_pause:1; /* do not begin to play the stream
117 immediately (RTSP only) */
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118 enum CodecID video_codec_id;
119 enum CodecID audio_codec_id;
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120} AVFormatParameters;
121
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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 */
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125#define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
126 raw picture data */
c64d476c 127#define AVFMT_GLOBALHEADER 0x0040 /* format wants global header */
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128
129typedef struct AVOutputFormat {
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130 const char *name;
131 const char *long_name;
132 const char *mime_type;
133 const char *extensions; /* comma separated extensions */
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134 /* size of private data so that it can be allocated in the wrapper */
135 int priv_data_size;
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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;
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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);
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147 /* private fields */
148 struct AVOutputFormat *next;
149} AVOutputFormat;
de6d9b64 150
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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
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160 additionnal paramters. Only used in raw format right
161 now. 'av_new_stream' should be called to create new streams. */
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162 int (*read_header)(struct AVFormatContext *,
163 AVFormatParameters *ap);
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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. */
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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 *);
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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);
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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;
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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;
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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
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202 /* private fields */
203 struct AVInputFormat *next;
204} AVInputFormat;
de6d9b64 205
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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 */
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213} AVIndexEntry;
214
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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 {
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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() */
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231 int64_t codec_info_duration;
232 int codec_info_nb_frames;
da24c5e3 233 /* encoding: PTS generation when outputing stream */
1e51d801 234 AVFrac pts;
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235 AVRational time_base;
236 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
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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?
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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;
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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
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251 char language[4]; /* ISO 639 3-letter language code (empty string if undefined) */
252
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253 /* av_read_frame() support */
254 int need_parsing;
255 struct AVCodecParserContext *parser;
6ec87caa 256
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257 int64_t cur_dts;
258 int last_IP_duration;
77405fc8 259 int64_t last_IP_pts;
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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;
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265} AVStream;
266
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267#define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
268 (streams are added dynamically) */
269
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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 */
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275 /* can only be iformat or oformat, not both at the same time */
276 struct AVInputFormat *iformat;
277 struct AVOutputFormat *oformat;
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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;
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285 char title[512];
286 char author[512];
287 char copyright[512];
288 char comment[512];
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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) */
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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 */
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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;
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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
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322 /* av_seek_frame() support */
323 int64_t data_offset; /* offset of the first packet */
324 int index_built;
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325
326 int mux_rate;
327 int packet_size;
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328 int preload;
329 int max_delay;
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330
331#define AVFMT_NOOUTPUTLOOP -1
332#define AVFMT_INFINITEOUTPUTLOOP 0
333 /* number of times to loop output in formats that support it */
334 int loop_output;
335
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336} AVFormatContext;
337
338typedef struct AVPacketList {
339 AVPacket pkt;
340 struct AVPacketList *next;
341} AVPacketList;
342
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343extern AVInputFormat *first_iformat;
344extern AVOutputFormat *first_oformat;
de6d9b64 345
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346/* still image support */
347struct AVInputImageContext;
348typedef struct AVInputImageContext AVInputImageContext;
349
350typedef struct AVImageInfo {
351 enum PixelFormat pix_fmt; /* requested pixel format */
352 int width; /* requested width */
353 int height; /* requested height */
7e2e1abf 354 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
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355 AVPicture pict; /* returned allocated image */
356} AVImageInfo;
357
3b1a27e0 358/* AVImageFormat.flags field constants */
7e2e1abf 359#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
3b1a27e0 360
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361typedef struct AVImageFormat {
362 const char *name;
363 const char *extensions;
364 /* tell if a given file has a chance of being parsing by this format */
365 int (*img_probe)(AVProbeData *);
366 /* read a whole image. 'alloc_cb' is called when the image size is
367 known so that the caller can allocate the image. If 'allo_cb'
368 returns non zero, then the parsing is aborted. Return '0' if
369 OK. */
370 int (*img_read)(ByteIOContext *,
371 int (*alloc_cb)(void *, AVImageInfo *info), void *);
372 /* write the image */
373 int supported_pixel_formats; /* mask of supported formats for output */
374 int (*img_write)(ByteIOContext *, AVImageInfo *);
3b1a27e0 375 int flags;
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376 struct AVImageFormat *next;
377} AVImageFormat;
378
379void av_register_image_format(AVImageFormat *img_fmt);
380AVImageFormat *av_probe_image_format(AVProbeData *pd);
381AVImageFormat *guess_image_format(const char *filename);
5b6d5596 382enum CodecID av_guess_image2_codec(const char *filename);
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383int av_read_image(ByteIOContext *pb, const char *filename,
384 AVImageFormat *fmt,
385 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
386int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
387
388extern AVImageFormat *first_image_format;
389
390extern AVImageFormat pnm_image_format;
391extern AVImageFormat pbm_image_format;
392extern AVImageFormat pgm_image_format;
393extern AVImageFormat ppm_image_format;
8975ba81 394extern AVImageFormat pam_image_format;
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395extern AVImageFormat pgmyuv_image_format;
396extern AVImageFormat yuv_image_format;
3a13f6bd 397#ifdef CONFIG_ZLIB
0e04e4e9 398extern AVImageFormat png_image_format;
3a13f6bd 399#endif
0250738f 400extern AVImageFormat jpeg_image_format;
cdc90af0 401extern AVImageFormat gif_image_format;
6a91ec51 402extern AVImageFormat sgi_image_format;
290c5fa6 403
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404/* XXX: use automatic init with either ELF sections or C file parser */
405/* modules */
de6d9b64 406
b9a281db 407/* mpeg.c */
ee404803 408extern AVInputFormat mpegps_demux;
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409int mpegps_init(void);
410
411/* mpegts.c */
412extern AVInputFormat mpegts_demux;
413int mpegts_init(void);
de6d9b64 414
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415/* rm.c */
416int rm_init(void);
417
418/* crc.c */
419int crc_init(void);
420
421/* img.c */
422int img_init(void);
423
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424/* img2.c */
425int img2_init(void);
426
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427/* asf.c */
428int asf_init(void);
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429
430/* avienc.c */
b9a281db 431int avienc_init(void);
de6d9b64 432
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433/* avidec.c */
434int avidec_init(void);
6cea494e 435
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436/* swf.c */
437int swf_init(void);
438
439/* mov.c */
440int mov_init(void);
de6d9b64 441
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442/* movenc.c */
443int movenc_init(void);
444
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445/* flvenc.c */
446int flvenc_init(void);
447
448/* flvdec.c */
449int flvdec_init(void);
450
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451/* jpeg.c */
452int jpeg_init(void);
de6d9b64 453
6cea494e 454/* gif.c */
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455int gif_init(void);
456
6cea494e 457/* au.c */
b9a281db 458int au_init(void);
6cea494e 459
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460/* amr.c */
461int amr_init(void);
462
de6d9b64 463/* wav.c */
c3775e54 464int ff_wav_init(void);
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465
466/* raw.c */
fb2758c8 467int pcm_read_seek(AVFormatContext *s,
7b3c1382 468 int stream_index, int64_t timestamp, int flags);
b9a281db 469int raw_init(void);
de6d9b64 470
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471/* mp3.c */
472int mp3_init(void);
473
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474/* yuv4mpeg.c */
475int yuv4mpeg_init(void);
476
9146ca37 477/* ogg2.c */
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478int ogg_init(void);
479
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480/* ogg.c */
481int libogg_init(void);
482
f20dca40 483/* dv.c */
c3775e54 484int ff_dv_init(void);
f20dca40 485
de6d9b64 486/* ffm.c */
b9a281db 487int ffm_init(void);
de6d9b64 488
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489/* rtsp.c */
490extern AVInputFormat redir_demux;
491int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
492
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493/* 4xm.c */
494int fourxm_init(void);
495
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496/* psxstr.c */
497int str_init(void);
498
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499/* idroq.c */
500int roq_init(void);
501
502/* ipmovie.c */
503int ipmovie_init(void);
504
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505/* nut.c */
506int nut_init(void);
507
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508/* wc3movie.c */
509int wc3_init(void);
510
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511/* westwood.c */
512int westwood_init(void);
513
514/* segafilm.c */
515int film_init(void);
516
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517/* idcin.c */
518int idcin_init(void);
519
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520/* flic.c */
521int flic_init(void);
522
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523/* sierravmd.c */
524int vmd_init(void);
525
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526/* matroska.c */
527int matroska_init(void);
528
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529/* sol.c */
530int sol_init(void);
531
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532/* electronicarts.c */
533int ea_init(void);
534
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535/* nsvdec.c */
536int nsvdec_init(void);
537
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538#include "rtp.h"
539
540#include "rtsp.h"
541
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542/* yuv4mpeg.c */
543extern AVOutputFormat yuv4mpegpipe_oformat;
544
b9a281db 545/* utils.c */
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546void av_register_input_format(AVInputFormat *format);
547void av_register_output_format(AVOutputFormat *format);
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548AVOutputFormat *guess_stream_format(const char *short_name,
549 const char *filename, const char *mime_type);
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550AVOutputFormat *guess_format(const char *short_name,
551 const char *filename, const char *mime_type);
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552enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
553 const char *filename, const char *mime_type, enum CodecType type);
de6d9b64 554
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555void av_hex_dump(FILE *f, uint8_t *buf, int size);
556void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
de6d9b64 557
94988531 558void av_register_all(void);
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559
560typedef struct FifoBuffer {
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561 uint8_t *buffer;
562 uint8_t *rptr, *wptr, *end;
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563} FifoBuffer;
564
565int fifo_init(FifoBuffer *f, int size);
566void fifo_free(FifoBuffer *f);
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567int fifo_size(FifoBuffer *f, uint8_t *rptr);
568int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
569void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
7000a175 570int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
568e18b1 571void fifo_realloc(FifoBuffer *f, unsigned int size);
de6d9b64 572
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573/* media file input */
574AVInputFormat *av_find_input_format(const char *short_name);
94988531 575AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
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576int av_open_input_stream(AVFormatContext **ic_ptr,
577 ByteIOContext *pb, const char *filename,
578 AVInputFormat *fmt, AVFormatParameters *ap);
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579int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
580 AVInputFormat *fmt,
581 int buf_size,
582 AVFormatParameters *ap);
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583/* no av_open for output, so applications will need this: */
584AVFormatContext *av_alloc_format_context(void);
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585
586#define AVERROR_UNKNOWN (-1) /* unknown error */
587#define AVERROR_IO (-2) /* i/o error */
588#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
589#define AVERROR_INVALIDDATA (-4) /* invalid data found */
590#define AVERROR_NOMEM (-5) /* not enough memory */
591#define AVERROR_NOFMT (-6) /* unknown format */
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592#define AVERROR_NOTSUPP (-7) /* operation not supported */
593
b9a281db 594int av_find_stream_info(AVFormatContext *ic);
de6d9b64 595int av_read_packet(AVFormatContext *s, AVPacket *pkt);
fb2758c8 596int av_read_frame(AVFormatContext *s, AVPacket *pkt);
3ba1438d 597int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
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598int av_read_play(AVFormatContext *s);
599int av_read_pause(AVFormatContext *s);
de6d9b64 600void av_close_input_file(AVFormatContext *s);
b9a281db 601AVStream *av_new_stream(AVFormatContext *s, int id);
9ee91c2f 602void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9 603 int pts_num, int pts_den);
de6d9b64 604
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605#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
606#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
27a5fe5f 607#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
3ba1438d 608
b754978a 609int av_find_default_stream_index(AVFormatContext *s);
dc56fc38 610int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
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611int av_add_index_entry(AVStream *st,
612 int64_t pos, int64_t timestamp, int distance, int flags);
3ba1438d 613int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
b754978a 614
b9a281db 615/* media file output */
290c5fa6 616int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
b9a281db 617int av_write_header(AVFormatContext *s);
e928649b 618int av_write_frame(AVFormatContext *s, AVPacket *pkt);
3c895fc0 619int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
e928649b 620
b9a281db 621int av_write_trailer(AVFormatContext *s);
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622
623void dump_format(AVFormatContext *ic,
624 int index,
625 const char *url,
626 int is_output);
627int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
445f1b83 628int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
0c1a9eda 629int64_t parse_date(const char *datestr, int duration);
de6d9b64 630
0c1a9eda 631int64_t av_gettime(void);
94988531 632
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633/* ffm specific for ffserver */
634#define FFM_PACKET_SIZE 4096
635offset_t ffm_read_write_index(int fd);
636void ffm_write_write_index(int fd, offset_t pos);
637void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
638
639int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
640
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641int get_frame_filename(char *buf, int buf_size,
642 const char *path, int number);
b9a281db 643int filename_number_test(const char *filename);
96baaa6a 644
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645/* grab specific */
646int video_grab_init(void);
647int audio_init(void);
96baaa6a 648
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649/* DV1394 */
650int dv1394_init(void);
f02be79d 651int dc1394_init(void);
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652
653#ifdef HAVE_AV_CONFIG_H
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654
655#include "os_support.h"
656
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657int strstart(const char *str, const char *val, const char **ptr);
658int stristart(const char *str, const char *val, const char **ptr);
659void pstrcpy(char *buf, int buf_size, const char *str);
660char *pstrcat(char *buf, int buf_size, const char *s);
fb025625 661
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662void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
663
e4e70d2e 664#ifdef __GNUC__
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665#define dynarray_add(tab, nb_ptr, elem)\
666do {\
667 typeof(tab) _tab = (tab);\
668 typeof(elem) _elem = (elem);\
669 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
670 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
671} while(0)
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672#else
673#define dynarray_add(tab, nb_ptr, elem)\
674do {\
675 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
676} while(0)
677#endif
39f472c3 678
f71869a4 679time_t mktimegm(struct tm *tm);
0c9fc6e1 680struct tm *brktimegm(time_t secs, struct tm *tm);
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681const char *small_strptime(const char *p, const char *fmt,
682 struct tm *dt);
683
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684struct in_addr;
685int resolve_host(struct in_addr *sin_addr, const char *hostname);
686
687void url_split(char *proto, int proto_size,
6ba5cbc6 688 char *authorization, int authorization_size,
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689 char *hostname, int hostname_size,
690 int *port_ptr,
691 char *path, int path_size,
692 const char *url);
693
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694int match_ext(const char *filename, const char *extensions);
695
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696#endif /* HAVE_AV_CONFIG_H */
697
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698#ifdef __cplusplus
699}
700#endif
701
fb025625 702#endif /* AVFORMAT_H */
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