add libdir support to configure patch by (Luca Barbato )lu_zero gentoo org)
[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
27a5fe5f 8#define LIBAVFORMAT_BUILD 4622
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 */
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127
128typedef struct AVOutputFormat {
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129 const char *name;
130 const char *long_name;
131 const char *mime_type;
132 const char *extensions; /* comma separated extensions */
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133 /* size of private data so that it can be allocated in the wrapper */
134 int priv_data_size;
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135 /* output support */
136 enum CodecID audio_codec; /* default audio codec */
137 enum CodecID video_codec; /* default video codec */
138 int (*write_header)(struct AVFormatContext *);
e928649b 139 int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
de6d9b64 140 int (*write_trailer)(struct AVFormatContext *);
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141 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
142 int flags;
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143 /* currently only used to set pixel format if not YUV420P */
144 int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
fe2d6fe2 145 int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
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146 /* private fields */
147 struct AVOutputFormat *next;
148} AVOutputFormat;
de6d9b64 149
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150typedef struct AVInputFormat {
151 const char *name;
152 const char *long_name;
153 /* size of private data so that it can be allocated in the wrapper */
154 int priv_data_size;
155 /* tell if a given file has a chance of being parsing by this format */
156 int (*read_probe)(AVProbeData *);
157 /* read the format header and initialize the AVFormatContext
de6d9b64 158 structure. Return 0 if OK. 'ap' if non NULL contains
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159 additionnal paramters. Only used in raw format right
160 now. 'av_new_stream' should be called to create new streams. */
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161 int (*read_header)(struct AVFormatContext *,
162 AVFormatParameters *ap);
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163 /* read one packet and put it in 'pkt'. pts and flags are also
164 set. 'av_new_stream' can be called only if the flag
da24c5e3 165 AVFMTCTX_NOHEADER is used. */
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166 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
167 /* close the stream. The AVFormatContext and AVStreams are not
168 freed by this function */
169 int (*read_close)(struct AVFormatContext *);
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170 /**
171 * seek to a given timestamp relative to the frames in
172 * stream component stream_index
173 * @param stream_index must not be -1
174 * @param flags selects which direction should be preferred if no exact
175 * match is available
176 */
fb2758c8 177 int (*read_seek)(struct AVFormatContext *,
3ba1438d 178 int stream_index, int64_t timestamp, int flags);
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179 /**
180 * gets the next timestamp in AV_TIME_BASE units.
181 */
182 int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
183 int64_t *pos, int64_t pos_limit);
da24c5e3 184 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
de6d9b64 185 int flags;
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186 /* if extensions are defined, then no probe is done. You should
187 usually not use extension format guessing because it is not
188 reliable enough */
189 const char *extensions;
190 /* general purpose read only value that the format can use */
191 int value;
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192
193 /* start/resume playing - only meaningful if using a network based format
194 (RTSP) */
195 int (*read_play)(struct AVFormatContext *);
196
197 /* pause playing - only meaningful if using a network based format
198 (RTSP) */
199 int (*read_pause)(struct AVFormatContext *);
200
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201 /* private fields */
202 struct AVInputFormat *next;
203} AVInputFormat;
de6d9b64 204
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205typedef struct AVIndexEntry {
206 int64_t pos;
207 int64_t timestamp;
208#define AVINDEX_KEYFRAME 0x0001
b754978a 209/* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */
fb2758c8 210 int flags;
3e9245a9 211 int min_distance; /* min distance between this and the previous keyframe, used to avoid unneeded searching */
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212} AVIndexEntry;
213
de6d9b64 214typedef struct AVStream {
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215 int index; /* stream index in AVFormatContext */
216 int id; /* format specific stream id */
de6d9b64 217 AVCodecContext codec; /* codec context */
76c0441b 218 int r_frame_rate; /* real frame rate of the stream */
14bea432 219 int r_frame_rate_base;/* real frame rate base of the stream */
de6d9b64 220 void *priv_data;
b9a281db 221 /* internal data used in av_find_stream_info() */
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222 int64_t codec_info_duration;
223 int codec_info_nb_frames;
da24c5e3 224 /* encoding: PTS generation when outputing stream */
1e51d801 225 AVFrac pts;
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226 AVRational time_base;
227 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
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228 /* ffmpeg.c private use */
229 int stream_copy; /* if TRUE, just copy stream */
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230 int discard; ///< if 1, packets can be discarded at will and dont need to be demuxed
231 //FIXME move stuff to a flags field?
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232 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
233 * MN:dunno if thats the right place, for it */
234 float quality;
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235 /* decoding: position of the first frame of the component, in
236 AV_TIME_BASE fractional seconds. */
237 int64_t start_time;
238 /* decoding: duration of the stream, in AV_TIME_BASE fractional
239 seconds. */
240 int64_t duration;
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241
242 /* av_read_frame() support */
243 int need_parsing;
244 struct AVCodecParserContext *parser;
6ec87caa 245
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246 int64_t cur_dts;
247 int last_IP_duration;
77405fc8 248 int64_t last_IP_pts;
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249 /* av_seek_frame() support */
250 AVIndexEntry *index_entries; /* only used if the format does not
251 support seeking natively */
252 int nb_index_entries;
253 int index_entries_allocated_size;
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254} AVStream;
255
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256#define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
257 (streams are added dynamically) */
258
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259#define MAX_STREAMS 20
260
261/* format I/O context */
262typedef struct AVFormatContext {
7fea94ce 263 const AVClass *av_class; /* set by av_alloc_format_context */
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264 /* can only be iformat or oformat, not both at the same time */
265 struct AVInputFormat *iformat;
266 struct AVOutputFormat *oformat;
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267 void *priv_data;
268 ByteIOContext pb;
269 int nb_streams;
270 AVStream *streams[MAX_STREAMS];
271 char filename[1024]; /* input or output filename */
272 /* stream info */
4568325a 273 int64_t timestamp;
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274 char title[512];
275 char author[512];
276 char copyright[512];
277 char comment[512];
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278 char album[512];
279 int year; /* ID3 year, 0 if none */
280 int track; /* track number, 0 if none */
281 char genre[32]; /* ID3 genre */
282
da24c5e3 283 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
916c80e9 284 /* private data for pts handling (do not modify directly) */
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285 /* This buffer is only needed when packets were already buffered but
286 not decoded, for example to get the codec parameters in mpeg
287 streams */
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288 struct AVPacketList *packet_buffer;
289
290 /* decoding: position of the first frame of the component, in
291 AV_TIME_BASE fractional seconds. NEVER set this value directly:
292 it is deduced from the AVStream values. */
293 int64_t start_time;
294 /* decoding: duration of the stream, in AV_TIME_BASE fractional
295 seconds. NEVER set this value directly: it is deduced from the
296 AVStream values. */
297 int64_t duration;
298 /* decoding: total file size. 0 if unknown */
299 int64_t file_size;
300 /* decoding: total stream bitrate in bit/s, 0 if not
301 available. Never set it directly if the file_size and the
302 duration are known as ffmpeg can compute it automatically. */
303 int bit_rate;
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304
305 /* av_read_frame() support */
306 AVStream *cur_st;
307 const uint8_t *cur_ptr;
308 int cur_len;
309 AVPacket cur_pkt;
310
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311 /* av_seek_frame() support */
312 int64_t data_offset; /* offset of the first packet */
313 int index_built;
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314
315 int mux_rate;
316 int packet_size;
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317 int preload;
318 int max_delay;
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319} AVFormatContext;
320
321typedef struct AVPacketList {
322 AVPacket pkt;
323 struct AVPacketList *next;
324} AVPacketList;
325
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326extern AVInputFormat *first_iformat;
327extern AVOutputFormat *first_oformat;
de6d9b64 328
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329/* still image support */
330struct AVInputImageContext;
331typedef struct AVInputImageContext AVInputImageContext;
332
333typedef struct AVImageInfo {
334 enum PixelFormat pix_fmt; /* requested pixel format */
335 int width; /* requested width */
336 int height; /* requested height */
7e2e1abf 337 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
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338 AVPicture pict; /* returned allocated image */
339} AVImageInfo;
340
3b1a27e0 341/* AVImageFormat.flags field constants */
7e2e1abf 342#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
3b1a27e0 343
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344typedef struct AVImageFormat {
345 const char *name;
346 const char *extensions;
347 /* tell if a given file has a chance of being parsing by this format */
348 int (*img_probe)(AVProbeData *);
349 /* read a whole image. 'alloc_cb' is called when the image size is
350 known so that the caller can allocate the image. If 'allo_cb'
351 returns non zero, then the parsing is aborted. Return '0' if
352 OK. */
353 int (*img_read)(ByteIOContext *,
354 int (*alloc_cb)(void *, AVImageInfo *info), void *);
355 /* write the image */
356 int supported_pixel_formats; /* mask of supported formats for output */
357 int (*img_write)(ByteIOContext *, AVImageInfo *);
3b1a27e0 358 int flags;
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359 struct AVImageFormat *next;
360} AVImageFormat;
361
362void av_register_image_format(AVImageFormat *img_fmt);
363AVImageFormat *av_probe_image_format(AVProbeData *pd);
364AVImageFormat *guess_image_format(const char *filename);
5b6d5596 365enum CodecID av_guess_image2_codec(const char *filename);
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366int av_read_image(ByteIOContext *pb, const char *filename,
367 AVImageFormat *fmt,
368 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
369int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
370
371extern AVImageFormat *first_image_format;
372
373extern AVImageFormat pnm_image_format;
374extern AVImageFormat pbm_image_format;
375extern AVImageFormat pgm_image_format;
376extern AVImageFormat ppm_image_format;
8975ba81 377extern AVImageFormat pam_image_format;
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378extern AVImageFormat pgmyuv_image_format;
379extern AVImageFormat yuv_image_format;
3a13f6bd 380#ifdef CONFIG_ZLIB
0e04e4e9 381extern AVImageFormat png_image_format;
3a13f6bd 382#endif
0250738f 383extern AVImageFormat jpeg_image_format;
cdc90af0 384extern AVImageFormat gif_image_format;
6a91ec51 385extern AVImageFormat sgi_image_format;
290c5fa6 386
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387/* XXX: use automatic init with either ELF sections or C file parser */
388/* modules */
de6d9b64 389
b9a281db 390/* mpeg.c */
ee404803 391extern AVInputFormat mpegps_demux;
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392int mpegps_init(void);
393
394/* mpegts.c */
395extern AVInputFormat mpegts_demux;
396int mpegts_init(void);
de6d9b64 397
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398/* rm.c */
399int rm_init(void);
400
401/* crc.c */
402int crc_init(void);
403
404/* img.c */
405int img_init(void);
406
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407/* img2.c */
408int img2_init(void);
409
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410/* asf.c */
411int asf_init(void);
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412
413/* avienc.c */
b9a281db 414int avienc_init(void);
de6d9b64 415
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416/* avidec.c */
417int avidec_init(void);
6cea494e 418
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419/* swf.c */
420int swf_init(void);
421
422/* mov.c */
423int mov_init(void);
de6d9b64 424
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425/* movenc.c */
426int movenc_init(void);
427
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428/* flvenc.c */
429int flvenc_init(void);
430
431/* flvdec.c */
432int flvdec_init(void);
433
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434/* jpeg.c */
435int jpeg_init(void);
de6d9b64 436
6cea494e 437/* gif.c */
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438int gif_init(void);
439
6cea494e 440/* au.c */
b9a281db 441int au_init(void);
6cea494e 442
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443/* amr.c */
444int amr_init(void);
445
de6d9b64 446/* wav.c */
c3775e54 447int ff_wav_init(void);
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448
449/* raw.c */
fb2758c8 450int pcm_read_seek(AVFormatContext *s,
7b3c1382 451 int stream_index, int64_t timestamp, int flags);
b9a281db 452int raw_init(void);
de6d9b64 453
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454/* mp3.c */
455int mp3_init(void);
456
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457/* yuv4mpeg.c */
458int yuv4mpeg_init(void);
459
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460/* ogg.c */
461int ogg_init(void);
462
f20dca40 463/* dv.c */
c3775e54 464int ff_dv_init(void);
f20dca40 465
de6d9b64 466/* ffm.c */
b9a281db 467int ffm_init(void);
de6d9b64 468
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469/* rtsp.c */
470extern AVInputFormat redir_demux;
471int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
472
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473/* 4xm.c */
474int fourxm_init(void);
475
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476/* psxstr.c */
477int str_init(void);
478
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479/* idroq.c */
480int roq_init(void);
481
482/* ipmovie.c */
483int ipmovie_init(void);
484
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485/* nut.c */
486int nut_init(void);
487
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488/* wc3movie.c */
489int wc3_init(void);
490
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491/* westwood.c */
492int westwood_init(void);
493
494/* segafilm.c */
495int film_init(void);
496
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497/* idcin.c */
498int idcin_init(void);
499
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500/* flic.c */
501int flic_init(void);
502
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503/* sierravmd.c */
504int vmd_init(void);
505
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506/* matroska.c */
507int matroska_init(void);
508
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509/* sol.c */
510int sol_init(void);
511
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512/* electronicarts.c */
513int ea_init(void);
514
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515/* nsvdec.c */
516int nsvdec_init(void);
517
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518#include "rtp.h"
519
520#include "rtsp.h"
521
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522/* yuv4mpeg.c */
523extern AVOutputFormat yuv4mpegpipe_oformat;
524
b9a281db 525/* utils.c */
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526void av_register_input_format(AVInputFormat *format);
527void av_register_output_format(AVOutputFormat *format);
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528AVOutputFormat *guess_stream_format(const char *short_name,
529 const char *filename, const char *mime_type);
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530AVOutputFormat *guess_format(const char *short_name,
531 const char *filename, const char *mime_type);
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532enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
533 const char *filename, const char *mime_type, enum CodecType type);
de6d9b64 534
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535void av_hex_dump(FILE *f, uint8_t *buf, int size);
536void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
de6d9b64 537
94988531 538void av_register_all(void);
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539
540typedef struct FifoBuffer {
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541 uint8_t *buffer;
542 uint8_t *rptr, *wptr, *end;
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543} FifoBuffer;
544
545int fifo_init(FifoBuffer *f, int size);
546void fifo_free(FifoBuffer *f);
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547int fifo_size(FifoBuffer *f, uint8_t *rptr);
548int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
549void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
7000a175 550int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
568e18b1 551void fifo_realloc(FifoBuffer *f, unsigned int size);
de6d9b64 552
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553/* media file input */
554AVInputFormat *av_find_input_format(const char *short_name);
94988531 555AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
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556int av_open_input_stream(AVFormatContext **ic_ptr,
557 ByteIOContext *pb, const char *filename,
558 AVInputFormat *fmt, AVFormatParameters *ap);
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559int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
560 AVInputFormat *fmt,
561 int buf_size,
562 AVFormatParameters *ap);
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563/* no av_open for output, so applications will need this: */
564AVFormatContext *av_alloc_format_context(void);
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565
566#define AVERROR_UNKNOWN (-1) /* unknown error */
567#define AVERROR_IO (-2) /* i/o error */
568#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
569#define AVERROR_INVALIDDATA (-4) /* invalid data found */
570#define AVERROR_NOMEM (-5) /* not enough memory */
571#define AVERROR_NOFMT (-6) /* unknown format */
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572#define AVERROR_NOTSUPP (-7) /* operation not supported */
573
b9a281db 574int av_find_stream_info(AVFormatContext *ic);
de6d9b64 575int av_read_packet(AVFormatContext *s, AVPacket *pkt);
fb2758c8 576int av_read_frame(AVFormatContext *s, AVPacket *pkt);
3ba1438d 577int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
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578int av_read_play(AVFormatContext *s);
579int av_read_pause(AVFormatContext *s);
de6d9b64 580void av_close_input_file(AVFormatContext *s);
b9a281db 581AVStream *av_new_stream(AVFormatContext *s, int id);
9ee91c2f 582void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9 583 int pts_num, int pts_den);
de6d9b64 584
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585#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
586#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
27a5fe5f 587#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
3ba1438d 588
b754978a 589int av_find_default_stream_index(AVFormatContext *s);
dc56fc38 590int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
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591int av_add_index_entry(AVStream *st,
592 int64_t pos, int64_t timestamp, int distance, int flags);
3ba1438d 593int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
b754978a 594
b9a281db 595/* media file output */
290c5fa6 596int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
b9a281db 597int av_write_header(AVFormatContext *s);
e928649b 598int av_write_frame(AVFormatContext *s, AVPacket *pkt);
3c895fc0 599int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
e928649b 600
b9a281db 601int av_write_trailer(AVFormatContext *s);
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602
603void dump_format(AVFormatContext *ic,
604 int index,
605 const char *url,
606 int is_output);
607int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
445f1b83 608int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
0c1a9eda 609int64_t parse_date(const char *datestr, int duration);
de6d9b64 610
0c1a9eda 611int64_t av_gettime(void);
94988531 612
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613/* ffm specific for ffserver */
614#define FFM_PACKET_SIZE 4096
615offset_t ffm_read_write_index(int fd);
616void ffm_write_write_index(int fd, offset_t pos);
617void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
618
619int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
620
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621int get_frame_filename(char *buf, int buf_size,
622 const char *path, int number);
b9a281db 623int filename_number_test(const char *filename);
96baaa6a 624
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625/* grab specific */
626int video_grab_init(void);
627int audio_init(void);
96baaa6a 628
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629/* DV1394 */
630int dv1394_init(void);
f02be79d 631int dc1394_init(void);
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632
633#ifdef HAVE_AV_CONFIG_H
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634
635#include "os_support.h"
636
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637int strstart(const char *str, const char *val, const char **ptr);
638int stristart(const char *str, const char *val, const char **ptr);
639void pstrcpy(char *buf, int buf_size, const char *str);
640char *pstrcat(char *buf, int buf_size, const char *s);
fb025625 641
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642void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
643
e4e70d2e 644#ifdef __GNUC__
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645#define dynarray_add(tab, nb_ptr, elem)\
646do {\
647 typeof(tab) _tab = (tab);\
648 typeof(elem) _elem = (elem);\
649 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
650 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
651} while(0)
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652#else
653#define dynarray_add(tab, nb_ptr, elem)\
654do {\
655 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
656} while(0)
657#endif
39f472c3 658
f71869a4 659time_t mktimegm(struct tm *tm);
0c9fc6e1 660struct tm *brktimegm(time_t secs, struct tm *tm);
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661const char *small_strptime(const char *p, const char *fmt,
662 struct tm *dt);
663
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664struct in_addr;
665int resolve_host(struct in_addr *sin_addr, const char *hostname);
666
667void url_split(char *proto, int proto_size,
6ba5cbc6 668 char *authorization, int authorization_size,
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669 char *hostname, int hostname_size,
670 int *port_ptr,
671 char *path, int path_size,
672 const char *url);
673
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674int match_ext(const char *filename, const char *extensions);
675
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676#endif /* HAVE_AV_CONFIG_H */
677
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678#ifdef __cplusplus
679}
680#endif
681
fb025625 682#endif /* AVFORMAT_H */