unused define
[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
f3356e9c 8#define LIBAVFORMAT_BUILD 4623
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 AV_TIME_BASE units (or
32 pts_den units in muxers or demuxers) */
33 int64_t dts; /* decompression time stamp in AV_TIME_BASE units (or
34 pts_den units in muxers or demuxers) */
0c1a9eda 35 uint8_t *data;
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36 int size;
37 int stream_index;
38 int flags;
fb2758c8 39 int duration; /* presentation duration (0 if not available) */
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40 void (*destruct)(struct AVPacket *);
41 void *priv;
de6d9b64 42} AVPacket;
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43#define PKT_FLAG_KEY 0x0001
44
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45void av_destruct_packet_nofree(AVPacket *pkt);
46
da24c5e3 47/* initialize optional fields of a packet */
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48static inline void av_init_packet(AVPacket *pkt)
49{
50 pkt->pts = AV_NOPTS_VALUE;
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51 pkt->dts = AV_NOPTS_VALUE;
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);
fb2758c8 59int av_dup_packet(AVPacket *pkt);
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60
61/**
62 * Free a packet
63 *
64 * @param pkt packet to free
65 */
66static inline void av_free_packet(AVPacket *pkt)
67{
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68 if (pkt && pkt->destruct) {
69 pkt->destruct(pkt);
70 }
6fa5a56c 71}
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72
73/*************************************************/
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74/* fractional numbers for exact pts handling */
75
76/* the exact value of the fractional number is: 'val + num / den'. num
77 is assumed to be such as 0 <= num < den */
78typedef struct AVFrac {
0c1a9eda 79 int64_t val, num, den;
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80} AVFrac;
81
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82void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
83void av_frac_add(AVFrac *f, int64_t incr);
84void av_frac_set(AVFrac *f, int64_t val);
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85
86/*************************************************/
b9a281db 87/* input/output formats */
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88
89struct AVFormatContext;
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90
91/* this structure contains the data a format has to probe a file */
92typedef struct AVProbeData {
5c91a675 93 const char *filename;
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94 unsigned char *buf;
95 int buf_size;
96} AVProbeData;
97
98#define AVPROBE_SCORE_MAX 100
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99
100typedef struct AVFormatParameters {
101 int frame_rate;
14bea432 102 int frame_rate_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 */
76c0441b 228 int r_frame_rate; /* real frame rate of the stream */
14bea432 229 int r_frame_rate_base;/* real frame rate base of the stream */
de6d9b64 230 void *priv_data;
b9a281db 231 /* internal data used in av_find_stream_info() */
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232 int64_t codec_info_duration;
233 int codec_info_nb_frames;
da24c5e3 234 /* encoding: PTS generation when outputing stream */
1e51d801 235 AVFrac pts;
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236 AVRational time_base;
237 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
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238 /* ffmpeg.c private use */
239 int stream_copy; /* if TRUE, just copy stream */
f3356e9c 240 enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
b4aea108 241 //FIXME move stuff to a flags field?
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242 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
243 * MN:dunno if thats the right place, for it */
244 float quality;
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245 /* decoding: position of the first frame of the component, in
246 AV_TIME_BASE fractional seconds. */
247 int64_t start_time;
248 /* decoding: duration of the stream, in AV_TIME_BASE fractional
249 seconds. */
250 int64_t duration;
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251
252 /* av_read_frame() support */
253 int need_parsing;
254 struct AVCodecParserContext *parser;
6ec87caa 255
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256 int64_t cur_dts;
257 int last_IP_duration;
77405fc8 258 int64_t last_IP_pts;
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259 /* av_seek_frame() support */
260 AVIndexEntry *index_entries; /* only used if the format does not
261 support seeking natively */
262 int nb_index_entries;
263 int index_entries_allocated_size;
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264} AVStream;
265
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266#define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
267 (streams are added dynamically) */
268
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269#define MAX_STREAMS 20
270
271/* format I/O context */
272typedef struct AVFormatContext {
7fea94ce 273 const AVClass *av_class; /* set by av_alloc_format_context */
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274 /* can only be iformat or oformat, not both at the same time */
275 struct AVInputFormat *iformat;
276 struct AVOutputFormat *oformat;
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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 */
4568325a 283 int64_t timestamp;
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284 char title[512];
285 char author[512];
286 char copyright[512];
287 char comment[512];
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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
da24c5e3 293 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
916c80e9 294 /* private data for pts handling (do not modify directly) */
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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 */
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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;
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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
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321 /* av_seek_frame() support */
322 int64_t data_offset; /* offset of the first packet */
323 int index_built;
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324
325 int mux_rate;
326 int packet_size;
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327 int preload;
328 int max_delay;
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329} AVFormatContext;
330
331typedef struct AVPacketList {
332 AVPacket pkt;
333 struct AVPacketList *next;
334} AVPacketList;
335
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336extern AVInputFormat *first_iformat;
337extern AVOutputFormat *first_oformat;
de6d9b64 338
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339/* still image support */
340struct AVInputImageContext;
341typedef struct AVInputImageContext AVInputImageContext;
342
343typedef struct AVImageInfo {
344 enum PixelFormat pix_fmt; /* requested pixel format */
345 int width; /* requested width */
346 int height; /* requested height */
7e2e1abf 347 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
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348 AVPicture pict; /* returned allocated image */
349} AVImageInfo;
350
3b1a27e0 351/* AVImageFormat.flags field constants */
7e2e1abf 352#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
3b1a27e0 353
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354typedef struct AVImageFormat {
355 const char *name;
356 const char *extensions;
357 /* tell if a given file has a chance of being parsing by this format */
358 int (*img_probe)(AVProbeData *);
359 /* read a whole image. 'alloc_cb' is called when the image size is
360 known so that the caller can allocate the image. If 'allo_cb'
361 returns non zero, then the parsing is aborted. Return '0' if
362 OK. */
363 int (*img_read)(ByteIOContext *,
364 int (*alloc_cb)(void *, AVImageInfo *info), void *);
365 /* write the image */
366 int supported_pixel_formats; /* mask of supported formats for output */
367 int (*img_write)(ByteIOContext *, AVImageInfo *);
3b1a27e0 368 int flags;
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369 struct AVImageFormat *next;
370} AVImageFormat;
371
372void av_register_image_format(AVImageFormat *img_fmt);
373AVImageFormat *av_probe_image_format(AVProbeData *pd);
374AVImageFormat *guess_image_format(const char *filename);
5b6d5596 375enum CodecID av_guess_image2_codec(const char *filename);
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376int av_read_image(ByteIOContext *pb, const char *filename,
377 AVImageFormat *fmt,
378 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
379int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
380
381extern AVImageFormat *first_image_format;
382
383extern AVImageFormat pnm_image_format;
384extern AVImageFormat pbm_image_format;
385extern AVImageFormat pgm_image_format;
386extern AVImageFormat ppm_image_format;
8975ba81 387extern AVImageFormat pam_image_format;
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388extern AVImageFormat pgmyuv_image_format;
389extern AVImageFormat yuv_image_format;
3a13f6bd 390#ifdef CONFIG_ZLIB
0e04e4e9 391extern AVImageFormat png_image_format;
3a13f6bd 392#endif
0250738f 393extern AVImageFormat jpeg_image_format;
cdc90af0 394extern AVImageFormat gif_image_format;
6a91ec51 395extern AVImageFormat sgi_image_format;
290c5fa6 396
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397/* XXX: use automatic init with either ELF sections or C file parser */
398/* modules */
de6d9b64 399
b9a281db 400/* mpeg.c */
ee404803 401extern AVInputFormat mpegps_demux;
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402int mpegps_init(void);
403
404/* mpegts.c */
405extern AVInputFormat mpegts_demux;
406int mpegts_init(void);
de6d9b64 407
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408/* rm.c */
409int rm_init(void);
410
411/* crc.c */
412int crc_init(void);
413
414/* img.c */
415int img_init(void);
416
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417/* img2.c */
418int img2_init(void);
419
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420/* asf.c */
421int asf_init(void);
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422
423/* avienc.c */
b9a281db 424int avienc_init(void);
de6d9b64 425
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426/* avidec.c */
427int avidec_init(void);
6cea494e 428
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429/* swf.c */
430int swf_init(void);
431
432/* mov.c */
433int mov_init(void);
de6d9b64 434
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435/* movenc.c */
436int movenc_init(void);
437
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438/* flvenc.c */
439int flvenc_init(void);
440
441/* flvdec.c */
442int flvdec_init(void);
443
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444/* jpeg.c */
445int jpeg_init(void);
de6d9b64 446
6cea494e 447/* gif.c */
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448int gif_init(void);
449
6cea494e 450/* au.c */
b9a281db 451int au_init(void);
6cea494e 452
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453/* amr.c */
454int amr_init(void);
455
de6d9b64 456/* wav.c */
c3775e54 457int ff_wav_init(void);
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458
459/* raw.c */
fb2758c8 460int pcm_read_seek(AVFormatContext *s,
7b3c1382 461 int stream_index, int64_t timestamp, int flags);
b9a281db 462int raw_init(void);
de6d9b64 463
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464/* mp3.c */
465int mp3_init(void);
466
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467/* yuv4mpeg.c */
468int yuv4mpeg_init(void);
469
9146ca37 470/* ogg2.c */
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471int ogg_init(void);
472
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473/* ogg.c */
474int libogg_init(void);
475
f20dca40 476/* dv.c */
c3775e54 477int ff_dv_init(void);
f20dca40 478
de6d9b64 479/* ffm.c */
b9a281db 480int ffm_init(void);
de6d9b64 481
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482/* rtsp.c */
483extern AVInputFormat redir_demux;
484int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
485
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486/* 4xm.c */
487int fourxm_init(void);
488
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489/* psxstr.c */
490int str_init(void);
491
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492/* idroq.c */
493int roq_init(void);
494
495/* ipmovie.c */
496int ipmovie_init(void);
497
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498/* nut.c */
499int nut_init(void);
500
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501/* wc3movie.c */
502int wc3_init(void);
503
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504/* westwood.c */
505int westwood_init(void);
506
507/* segafilm.c */
508int film_init(void);
509
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510/* idcin.c */
511int idcin_init(void);
512
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513/* flic.c */
514int flic_init(void);
515
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516/* sierravmd.c */
517int vmd_init(void);
518
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519/* matroska.c */
520int matroska_init(void);
521
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522/* sol.c */
523int sol_init(void);
524
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525/* electronicarts.c */
526int ea_init(void);
527
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528/* nsvdec.c */
529int nsvdec_init(void);
530
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531#include "rtp.h"
532
533#include "rtsp.h"
534
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535/* yuv4mpeg.c */
536extern AVOutputFormat yuv4mpegpipe_oformat;
537
b9a281db 538/* utils.c */
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539void av_register_input_format(AVInputFormat *format);
540void av_register_output_format(AVOutputFormat *format);
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541AVOutputFormat *guess_stream_format(const char *short_name,
542 const char *filename, const char *mime_type);
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543AVOutputFormat *guess_format(const char *short_name,
544 const char *filename, const char *mime_type);
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545enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
546 const char *filename, const char *mime_type, enum CodecType type);
de6d9b64 547
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548void av_hex_dump(FILE *f, uint8_t *buf, int size);
549void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
de6d9b64 550
94988531 551void av_register_all(void);
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552
553typedef struct FifoBuffer {
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554 uint8_t *buffer;
555 uint8_t *rptr, *wptr, *end;
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556} FifoBuffer;
557
558int fifo_init(FifoBuffer *f, int size);
559void fifo_free(FifoBuffer *f);
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560int fifo_size(FifoBuffer *f, uint8_t *rptr);
561int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
562void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
7000a175 563int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
568e18b1 564void fifo_realloc(FifoBuffer *f, unsigned int size);
de6d9b64 565
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566/* media file input */
567AVInputFormat *av_find_input_format(const char *short_name);
94988531 568AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
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569int av_open_input_stream(AVFormatContext **ic_ptr,
570 ByteIOContext *pb, const char *filename,
571 AVInputFormat *fmt, AVFormatParameters *ap);
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572int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
573 AVInputFormat *fmt,
574 int buf_size,
575 AVFormatParameters *ap);
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576/* no av_open for output, so applications will need this: */
577AVFormatContext *av_alloc_format_context(void);
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578
579#define AVERROR_UNKNOWN (-1) /* unknown error */
580#define AVERROR_IO (-2) /* i/o error */
581#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
582#define AVERROR_INVALIDDATA (-4) /* invalid data found */
583#define AVERROR_NOMEM (-5) /* not enough memory */
584#define AVERROR_NOFMT (-6) /* unknown format */
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585#define AVERROR_NOTSUPP (-7) /* operation not supported */
586
b9a281db 587int av_find_stream_info(AVFormatContext *ic);
de6d9b64 588int av_read_packet(AVFormatContext *s, AVPacket *pkt);
fb2758c8 589int av_read_frame(AVFormatContext *s, AVPacket *pkt);
3ba1438d 590int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
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591int av_read_play(AVFormatContext *s);
592int av_read_pause(AVFormatContext *s);
de6d9b64 593void av_close_input_file(AVFormatContext *s);
b9a281db 594AVStream *av_new_stream(AVFormatContext *s, int id);
9ee91c2f 595void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9 596 int pts_num, int pts_den);
de6d9b64 597
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598#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
599#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
27a5fe5f 600#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
3ba1438d 601
b754978a 602int av_find_default_stream_index(AVFormatContext *s);
dc56fc38 603int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
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604int av_add_index_entry(AVStream *st,
605 int64_t pos, int64_t timestamp, int distance, int flags);
3ba1438d 606int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
b754978a 607
b9a281db 608/* media file output */
290c5fa6 609int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
b9a281db 610int av_write_header(AVFormatContext *s);
e928649b 611int av_write_frame(AVFormatContext *s, AVPacket *pkt);
3c895fc0 612int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
e928649b 613
b9a281db 614int av_write_trailer(AVFormatContext *s);
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615
616void dump_format(AVFormatContext *ic,
617 int index,
618 const char *url,
619 int is_output);
620int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
445f1b83 621int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
0c1a9eda 622int64_t parse_date(const char *datestr, int duration);
de6d9b64 623
0c1a9eda 624int64_t av_gettime(void);
94988531 625
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626/* ffm specific for ffserver */
627#define FFM_PACKET_SIZE 4096
628offset_t ffm_read_write_index(int fd);
629void ffm_write_write_index(int fd, offset_t pos);
630void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
631
632int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
633
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634int get_frame_filename(char *buf, int buf_size,
635 const char *path, int number);
b9a281db 636int filename_number_test(const char *filename);
96baaa6a 637
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638/* grab specific */
639int video_grab_init(void);
640int audio_init(void);
96baaa6a 641
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642/* DV1394 */
643int dv1394_init(void);
f02be79d 644int dc1394_init(void);
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645
646#ifdef HAVE_AV_CONFIG_H
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647
648#include "os_support.h"
649
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650int strstart(const char *str, const char *val, const char **ptr);
651int stristart(const char *str, const char *val, const char **ptr);
652void pstrcpy(char *buf, int buf_size, const char *str);
653char *pstrcat(char *buf, int buf_size, const char *s);
fb025625 654
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655void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
656
e4e70d2e 657#ifdef __GNUC__
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658#define dynarray_add(tab, nb_ptr, elem)\
659do {\
660 typeof(tab) _tab = (tab);\
661 typeof(elem) _elem = (elem);\
662 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
663 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
664} while(0)
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665#else
666#define dynarray_add(tab, nb_ptr, elem)\
667do {\
668 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
669} while(0)
670#endif
39f472c3 671
f71869a4 672time_t mktimegm(struct tm *tm);
0c9fc6e1 673struct tm *brktimegm(time_t secs, struct tm *tm);
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674const char *small_strptime(const char *p, const char *fmt,
675 struct tm *dt);
676
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677struct in_addr;
678int resolve_host(struct in_addr *sin_addr, const char *hostname);
679
680void url_split(char *proto, int proto_size,
6ba5cbc6 681 char *authorization, int authorization_size,
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682 char *hostname, int hostname_size,
683 int *port_ptr,
684 char *path, int path_size,
685 const char *url);
686
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687int match_ext(const char *filename, const char *extensions);
688
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689#endif /* HAVE_AV_CONFIG_H */
690
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691#ifdef __cplusplus
692}
693#endif
694
fb025625 695#endif /* AVFORMAT_H */
f3356e9c 696