malloc padding to avoid reading past the malloc()ed area.
[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
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8#define LIBAVFORMAT_VERSION_INT ((50<<16)+(0<<8)+0)
9#define LIBAVFORMAT_VERSION 50.0.0
5aa083ee 10#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
8026c3b5 11
5aa083ee 12#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
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
63dd1377 44void av_destruct_packet_nofree(AVPacket *pkt);
90ad92b3 45void av_destruct_packet(AVPacket *pkt);
63dd1377 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;
fb2758c8 51 pkt->dts = AV_NOPTS_VALUE;
2692067a 52 pkt->pos = -1;
fb2758c8 53 pkt->duration = 0;
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54 pkt->flags = 0;
55 pkt->stream_index = 0;
63dd1377 56 pkt->destruct= av_destruct_packet_nofree;
6fa5a56c 57}
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58
59int av_new_packet(AVPacket *pkt, int size);
2692067a 60int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
fb2758c8 61int av_dup_packet(AVPacket *pkt);
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62
63/**
64 * Free a packet
65 *
66 * @param pkt packet to free
67 */
68static inline void av_free_packet(AVPacket *pkt)
69{
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70 if (pkt && pkt->destruct) {
71 pkt->destruct(pkt);
72 }
6fa5a56c 73}
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74
75/*************************************************/
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76/* fractional numbers for exact pts handling */
77
78/* the exact value of the fractional number is: 'val + num / den'. num
79 is assumed to be such as 0 <= num < den */
80typedef struct AVFrac {
0c1a9eda 81 int64_t val, num, den;
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82} AVFrac;
83
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84void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
85void av_frac_add(AVFrac *f, int64_t incr);
86void av_frac_set(AVFrac *f, int64_t val);
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87
88/*************************************************/
b9a281db 89/* input/output formats */
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90
91struct AVFormatContext;
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92
93/* this structure contains the data a format has to probe a file */
94typedef struct AVProbeData {
5c91a675 95 const char *filename;
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96 unsigned char *buf;
97 int buf_size;
98} AVProbeData;
99
100#define AVPROBE_SCORE_MAX 100
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101
102typedef struct AVFormatParameters {
c0df9d75 103 AVRational time_base;
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104 int sample_rate;
105 int channels;
106 int width;
107 int height;
4606ac8d 108 enum PixelFormat pix_fmt;
290c5fa6 109 struct AVImageFormat *image_format;
7f172339 110 int channel; /* used to select dv channel */
6beefa40 111 const char *device; /* video, audio or DV device */
e3ee3283 112 const char *standard; /* tv standard, NTSC, PAL, SECAM */
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113 int mpeg2ts_raw:1; /* force raw MPEG2 transport stream output, if possible */
114 int mpeg2ts_compute_pcr:1; /* compute exact PCR for each transport
115 stream packet (only meaningful if
116 mpeg2ts_raw is TRUE */
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117 int initial_pause:1; /* do not begin to play the stream
118 immediately (RTSP only) */
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119 enum CodecID video_codec_id;
120 enum CodecID audio_codec_id;
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121} AVFormatParameters;
122
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123#define AVFMT_NOFILE 0x0001 /* no file should be opened */
124#define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
b9a281db 125#define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
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126#define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
127 raw picture data */
c64d476c 128#define AVFMT_GLOBALHEADER 0x0040 /* format wants global header */
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129
130typedef struct AVOutputFormat {
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131 const char *name;
132 const char *long_name;
133 const char *mime_type;
134 const char *extensions; /* comma separated extensions */
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135 /* size of private data so that it can be allocated in the wrapper */
136 int priv_data_size;
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137 /* output support */
138 enum CodecID audio_codec; /* default audio codec */
139 enum CodecID video_codec; /* default video codec */
140 int (*write_header)(struct AVFormatContext *);
e928649b 141 int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
de6d9b64 142 int (*write_trailer)(struct AVFormatContext *);
c64d476c 143 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
b9a281db 144 int flags;
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145 /* currently only used to set pixel format if not YUV420P */
146 int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
fe2d6fe2 147 int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
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148 /* private fields */
149 struct AVOutputFormat *next;
150} AVOutputFormat;
de6d9b64 151
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152typedef struct AVInputFormat {
153 const char *name;
154 const char *long_name;
155 /* size of private data so that it can be allocated in the wrapper */
156 int priv_data_size;
157 /* tell if a given file has a chance of being parsing by this format */
158 int (*read_probe)(AVProbeData *);
159 /* read the format header and initialize the AVFormatContext
de6d9b64 160 structure. Return 0 if OK. 'ap' if non NULL contains
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161 additionnal paramters. Only used in raw format right
162 now. 'av_new_stream' should be called to create new streams. */
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163 int (*read_header)(struct AVFormatContext *,
164 AVFormatParameters *ap);
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165 /* read one packet and put it in 'pkt'. pts and flags are also
166 set. 'av_new_stream' can be called only if the flag
da24c5e3 167 AVFMTCTX_NOHEADER is used. */
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168 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
169 /* close the stream. The AVFormatContext and AVStreams are not
170 freed by this function */
171 int (*read_close)(struct AVFormatContext *);
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172 /**
173 * seek to a given timestamp relative to the frames in
174 * stream component stream_index
175 * @param stream_index must not be -1
176 * @param flags selects which direction should be preferred if no exact
177 * match is available
178 */
fb2758c8 179 int (*read_seek)(struct AVFormatContext *,
3ba1438d 180 int stream_index, int64_t timestamp, int flags);
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181 /**
182 * gets the next timestamp in AV_TIME_BASE units.
183 */
184 int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
185 int64_t *pos, int64_t pos_limit);
da24c5e3 186 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
de6d9b64 187 int flags;
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188 /* if extensions are defined, then no probe is done. You should
189 usually not use extension format guessing because it is not
190 reliable enough */
191 const char *extensions;
192 /* general purpose read only value that the format can use */
193 int value;
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194
195 /* start/resume playing - only meaningful if using a network based format
196 (RTSP) */
197 int (*read_play)(struct AVFormatContext *);
198
199 /* pause playing - only meaningful if using a network based format
200 (RTSP) */
201 int (*read_pause)(struct AVFormatContext *);
202
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203 /* private fields */
204 struct AVInputFormat *next;
205} AVInputFormat;
de6d9b64 206
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207typedef struct AVIndexEntry {
208 int64_t pos;
209 int64_t timestamp;
210#define AVINDEX_KEYFRAME 0x0001
b754978a 211/* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */
fb2758c8 212 int flags;
3e9245a9 213 int min_distance; /* min distance between this and the previous keyframe, used to avoid unneeded searching */
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214} AVIndexEntry;
215
de6d9b64 216typedef struct AVStream {
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217 int index; /* stream index in AVFormatContext */
218 int id; /* format specific stream id */
01f4895c 219 AVCodecContext *codec; /* codec context */
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220 /**
221 * real base frame rate of the stream.
222 * for example if the timebase is 1/90000 and all frames have either
223 * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
224 */
225 AVRational r_frame_rate;
de6d9b64 226 void *priv_data;
b9a281db 227 /* internal data used in av_find_stream_info() */
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228 int64_t codec_info_duration;
229 int codec_info_nb_frames;
da24c5e3 230 /* encoding: PTS generation when outputing stream */
1e51d801 231 AVFrac pts;
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232
233 /**
234 * this is the fundamental unit of time (in seconds) in terms
235 * of which frame timestamps are represented. for fixed-fps content,
236 * timebase should be 1/framerate and timestamp increments should be
237 * identically 1.
238 */
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239 AVRational time_base;
240 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
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241 /* ffmpeg.c private use */
242 int stream_copy; /* if TRUE, just copy stream */
f3356e9c 243 enum AVDiscard discard; ///< selects which packets can be discarded at will and dont need to be demuxed
b4aea108 244 //FIXME move stuff to a flags field?
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245 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
246 * MN:dunno if thats the right place, for it */
247 float quality;
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248 /* decoding: position of the first frame of the component, in
249 AV_TIME_BASE fractional seconds. */
250 int64_t start_time;
251 /* decoding: duration of the stream, in AV_TIME_BASE fractional
252 seconds. */
253 int64_t duration;
fb2758c8 254
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255 char language[4]; /* ISO 639 3-letter language code (empty string if undefined) */
256
fb2758c8 257 /* av_read_frame() support */
7cbaa7ba 258 int need_parsing; ///< 1->full parsing needed, 2->only parse headers dont repack
fb2758c8 259 struct AVCodecParserContext *parser;
6ec87caa 260
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261 int64_t cur_dts;
262 int last_IP_duration;
77405fc8 263 int64_t last_IP_pts;
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264 /* av_seek_frame() support */
265 AVIndexEntry *index_entries; /* only used if the format does not
266 support seeking natively */
267 int nb_index_entries;
268 int index_entries_allocated_size;
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269
270 int64_t nb_frames; ///< number of frames in this stream if known or 0
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271} AVStream;
272
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273#define AVFMTCTX_NOHEADER 0x0001 /* signal that no header is present
274 (streams are added dynamically) */
275
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276#define MAX_STREAMS 20
277
278/* format I/O context */
279typedef struct AVFormatContext {
7fea94ce 280 const AVClass *av_class; /* set by av_alloc_format_context */
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281 /* can only be iformat or oformat, not both at the same time */
282 struct AVInputFormat *iformat;
283 struct AVOutputFormat *oformat;
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284 void *priv_data;
285 ByteIOContext pb;
286 int nb_streams;
287 AVStream *streams[MAX_STREAMS];
288 char filename[1024]; /* input or output filename */
289 /* stream info */
4568325a 290 int64_t timestamp;
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291 char title[512];
292 char author[512];
293 char copyright[512];
294 char comment[512];
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295 char album[512];
296 int year; /* ID3 year, 0 if none */
297 int track; /* track number, 0 if none */
298 char genre[32]; /* ID3 genre */
299
da24c5e3 300 int ctx_flags; /* format specific flags, see AVFMTCTX_xx */
916c80e9 301 /* private data for pts handling (do not modify directly) */
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302 /* This buffer is only needed when packets were already buffered but
303 not decoded, for example to get the codec parameters in mpeg
304 streams */
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305 struct AVPacketList *packet_buffer;
306
307 /* decoding: position of the first frame of the component, in
308 AV_TIME_BASE fractional seconds. NEVER set this value directly:
309 it is deduced from the AVStream values. */
310 int64_t start_time;
311 /* decoding: duration of the stream, in AV_TIME_BASE fractional
312 seconds. NEVER set this value directly: it is deduced from the
313 AVStream values. */
314 int64_t duration;
315 /* decoding: total file size. 0 if unknown */
316 int64_t file_size;
317 /* decoding: total stream bitrate in bit/s, 0 if not
318 available. Never set it directly if the file_size and the
319 duration are known as ffmpeg can compute it automatically. */
320 int bit_rate;
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321
322 /* av_read_frame() support */
323 AVStream *cur_st;
324 const uint8_t *cur_ptr;
325 int cur_len;
326 AVPacket cur_pkt;
327
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328 /* av_seek_frame() support */
329 int64_t data_offset; /* offset of the first packet */
330 int index_built;
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331
332 int mux_rate;
333 int packet_size;
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334 int preload;
335 int max_delay;
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336
337#define AVFMT_NOOUTPUTLOOP -1
338#define AVFMT_INFINITEOUTPUTLOOP 0
339 /* number of times to loop output in formats that support it */
340 int loop_output;
341
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342 int flags;
343#define AVFMT_FLAG_GENPTS 0x0001 ///< generate pts if missing even if it requires parsing future frames
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344} AVFormatContext;
345
346typedef struct AVPacketList {
347 AVPacket pkt;
348 struct AVPacketList *next;
349} AVPacketList;
350
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351extern AVInputFormat *first_iformat;
352extern AVOutputFormat *first_oformat;
de6d9b64 353
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354/* still image support */
355struct AVInputImageContext;
356typedef struct AVInputImageContext AVInputImageContext;
357
358typedef struct AVImageInfo {
359 enum PixelFormat pix_fmt; /* requested pixel format */
360 int width; /* requested width */
361 int height; /* requested height */
7e2e1abf 362 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
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363 AVPicture pict; /* returned allocated image */
364} AVImageInfo;
365
3b1a27e0 366/* AVImageFormat.flags field constants */
7e2e1abf 367#define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
3b1a27e0 368
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369typedef struct AVImageFormat {
370 const char *name;
371 const char *extensions;
372 /* tell if a given file has a chance of being parsing by this format */
373 int (*img_probe)(AVProbeData *);
374 /* read a whole image. 'alloc_cb' is called when the image size is
375 known so that the caller can allocate the image. If 'allo_cb'
376 returns non zero, then the parsing is aborted. Return '0' if
377 OK. */
378 int (*img_read)(ByteIOContext *,
379 int (*alloc_cb)(void *, AVImageInfo *info), void *);
380 /* write the image */
381 int supported_pixel_formats; /* mask of supported formats for output */
382 int (*img_write)(ByteIOContext *, AVImageInfo *);
3b1a27e0 383 int flags;
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384 struct AVImageFormat *next;
385} AVImageFormat;
386
387void av_register_image_format(AVImageFormat *img_fmt);
388AVImageFormat *av_probe_image_format(AVProbeData *pd);
389AVImageFormat *guess_image_format(const char *filename);
5b6d5596 390enum CodecID av_guess_image2_codec(const char *filename);
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391int av_read_image(ByteIOContext *pb, const char *filename,
392 AVImageFormat *fmt,
393 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
394int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
395
396extern AVImageFormat *first_image_format;
397
398extern AVImageFormat pnm_image_format;
399extern AVImageFormat pbm_image_format;
400extern AVImageFormat pgm_image_format;
401extern AVImageFormat ppm_image_format;
8975ba81 402extern AVImageFormat pam_image_format;
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403extern AVImageFormat pgmyuv_image_format;
404extern AVImageFormat yuv_image_format;
3a13f6bd 405#ifdef CONFIG_ZLIB
0e04e4e9 406extern AVImageFormat png_image_format;
3a13f6bd 407#endif
0250738f 408extern AVImageFormat jpeg_image_format;
cdc90af0 409extern AVImageFormat gif_image_format;
6a91ec51 410extern AVImageFormat sgi_image_format;
290c5fa6 411
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412/* XXX: use automatic init with either ELF sections or C file parser */
413/* modules */
de6d9b64 414
b9a281db 415/* mpeg.c */
ee404803 416extern AVInputFormat mpegps_demux;
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417int mpegps_init(void);
418
419/* mpegts.c */
420extern AVInputFormat mpegts_demux;
421int mpegts_init(void);
de6d9b64 422
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423/* rm.c */
424int rm_init(void);
425
426/* crc.c */
427int crc_init(void);
428
429/* img.c */
430int img_init(void);
431
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432/* img2.c */
433int img2_init(void);
434
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435/* asf.c */
436int asf_init(void);
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437
438/* avienc.c */
b9a281db 439int avienc_init(void);
de6d9b64 440
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441/* avidec.c */
442int avidec_init(void);
6cea494e 443
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444/* swf.c */
445int swf_init(void);
446
447/* mov.c */
448int mov_init(void);
de6d9b64 449
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450/* movenc.c */
451int movenc_init(void);
452
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453/* flvenc.c */
454int flvenc_init(void);
455
456/* flvdec.c */
457int flvdec_init(void);
458
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459/* jpeg.c */
460int jpeg_init(void);
de6d9b64 461
6cea494e 462/* gif.c */
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463int gif_init(void);
464
6cea494e 465/* au.c */
b9a281db 466int au_init(void);
6cea494e 467
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468/* amr.c */
469int amr_init(void);
470
de6d9b64 471/* wav.c */
c3775e54 472int ff_wav_init(void);
de6d9b64 473
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474/* mmf.c */
475int ff_mmf_init(void);
476
de6d9b64 477/* raw.c */
fb2758c8 478int pcm_read_seek(AVFormatContext *s,
7b3c1382 479 int stream_index, int64_t timestamp, int flags);
b9a281db 480int raw_init(void);
de6d9b64 481
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482/* mp3.c */
483int mp3_init(void);
484
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485/* yuv4mpeg.c */
486int yuv4mpeg_init(void);
487
9146ca37 488/* ogg2.c */
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489int ogg_init(void);
490
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491/* ogg.c */
492int libogg_init(void);
493
f20dca40 494/* dv.c */
c3775e54 495int ff_dv_init(void);
f20dca40 496
de6d9b64 497/* ffm.c */
b9a281db 498int ffm_init(void);
de6d9b64 499
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500/* rtsp.c */
501extern AVInputFormat redir_demux;
502int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
503
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504/* 4xm.c */
505int fourxm_init(void);
506
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507/* psxstr.c */
508int str_init(void);
509
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510/* idroq.c */
511int roq_init(void);
512
513/* ipmovie.c */
514int ipmovie_init(void);
515
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516/* nut.c */
517int nut_init(void);
518
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519/* wc3movie.c */
520int wc3_init(void);
521
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522/* westwood.c */
523int westwood_init(void);
524
525/* segafilm.c */
526int film_init(void);
527
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528/* idcin.c */
529int idcin_init(void);
530
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531/* flic.c */
532int flic_init(void);
533
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534/* sierravmd.c */
535int vmd_init(void);
536
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537/* matroska.c */
538int matroska_init(void);
539
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540/* sol.c */
541int sol_init(void);
542
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543/* electronicarts.c */
544int ea_init(void);
545
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546/* nsvdec.c */
547int nsvdec_init(void);
548
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549/* daud.c */
550int daud_init(void);
551
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552#include "rtp.h"
553
554#include "rtsp.h"
555
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556/* yuv4mpeg.c */
557extern AVOutputFormat yuv4mpegpipe_oformat;
558
b9a281db 559/* utils.c */
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560void av_register_input_format(AVInputFormat *format);
561void av_register_output_format(AVOutputFormat *format);
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562AVOutputFormat *guess_stream_format(const char *short_name,
563 const char *filename, const char *mime_type);
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564AVOutputFormat *guess_format(const char *short_name,
565 const char *filename, const char *mime_type);
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566enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
567 const char *filename, const char *mime_type, enum CodecType type);
de6d9b64 568
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569void av_hex_dump(FILE *f, uint8_t *buf, int size);
570void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
de6d9b64 571
94988531 572void av_register_all(void);
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573
574typedef struct FifoBuffer {
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575 uint8_t *buffer;
576 uint8_t *rptr, *wptr, *end;
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577} FifoBuffer;
578
579int fifo_init(FifoBuffer *f, int size);
580void fifo_free(FifoBuffer *f);
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581int fifo_size(FifoBuffer *f, uint8_t *rptr);
582int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
583void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
7000a175 584int put_fifo(ByteIOContext *pb, FifoBuffer *f, int buf_size, uint8_t **rptr_ptr);
568e18b1 585void fifo_realloc(FifoBuffer *f, unsigned int size);
de6d9b64 586
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587/* media file input */
588AVInputFormat *av_find_input_format(const char *short_name);
94988531 589AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
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590int av_open_input_stream(AVFormatContext **ic_ptr,
591 ByteIOContext *pb, const char *filename,
592 AVInputFormat *fmt, AVFormatParameters *ap);
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593int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
594 AVInputFormat *fmt,
595 int buf_size,
596 AVFormatParameters *ap);
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597/* no av_open for output, so applications will need this: */
598AVFormatContext *av_alloc_format_context(void);
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599
600#define AVERROR_UNKNOWN (-1) /* unknown error */
601#define AVERROR_IO (-2) /* i/o error */
602#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
603#define AVERROR_INVALIDDATA (-4) /* invalid data found */
604#define AVERROR_NOMEM (-5) /* not enough memory */
605#define AVERROR_NOFMT (-6) /* unknown format */
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606#define AVERROR_NOTSUPP (-7) /* operation not supported */
607
b9a281db 608int av_find_stream_info(AVFormatContext *ic);
de6d9b64 609int av_read_packet(AVFormatContext *s, AVPacket *pkt);
fb2758c8 610int av_read_frame(AVFormatContext *s, AVPacket *pkt);
3ba1438d 611int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
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612int av_read_play(AVFormatContext *s);
613int av_read_pause(AVFormatContext *s);
de6d9b64 614void av_close_input_file(AVFormatContext *s);
b9a281db 615AVStream *av_new_stream(AVFormatContext *s, int id);
9ee91c2f 616void av_set_pts_info(AVStream *s, int pts_wrap_bits,
916c80e9 617 int pts_num, int pts_den);
de6d9b64 618
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619#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
620#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
27a5fe5f 621#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
3ba1438d 622
b754978a 623int av_find_default_stream_index(AVFormatContext *s);
dc56fc38 624int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
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625int av_add_index_entry(AVStream *st,
626 int64_t pos, int64_t timestamp, int distance, int flags);
3ba1438d 627int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
b754978a 628
b9a281db 629/* media file output */
290c5fa6 630int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
b9a281db 631int av_write_header(AVFormatContext *s);
e928649b 632int av_write_frame(AVFormatContext *s, AVPacket *pkt);
3c895fc0 633int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
e928649b 634
b9a281db 635int av_write_trailer(AVFormatContext *s);
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636
637void dump_format(AVFormatContext *ic,
638 int index,
639 const char *url,
640 int is_output);
641int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
445f1b83 642int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
0c1a9eda 643int64_t parse_date(const char *datestr, int duration);
de6d9b64 644
0c1a9eda 645int64_t av_gettime(void);
94988531 646
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647/* ffm specific for ffserver */
648#define FFM_PACKET_SIZE 4096
649offset_t ffm_read_write_index(int fd);
650void ffm_write_write_index(int fd, offset_t pos);
651void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
652
653int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
654
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655int get_frame_filename(char *buf, int buf_size,
656 const char *path, int number);
b9a281db 657int filename_number_test(const char *filename);
96baaa6a 658
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659/* grab specific */
660int video_grab_init(void);
661int audio_init(void);
96baaa6a 662
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663/* DV1394 */
664int dv1394_init(void);
f02be79d 665int dc1394_init(void);
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666
667#ifdef HAVE_AV_CONFIG_H
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668
669#include "os_support.h"
670
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671int strstart(const char *str, const char *val, const char **ptr);
672int stristart(const char *str, const char *val, const char **ptr);
673void pstrcpy(char *buf, int buf_size, const char *str);
674char *pstrcat(char *buf, int buf_size, const char *s);
fb025625 675
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676void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
677
e4e70d2e 678#ifdef __GNUC__
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679#define dynarray_add(tab, nb_ptr, elem)\
680do {\
681 typeof(tab) _tab = (tab);\
682 typeof(elem) _elem = (elem);\
683 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
684 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
685} while(0)
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686#else
687#define dynarray_add(tab, nb_ptr, elem)\
688do {\
689 __dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
690} while(0)
691#endif
39f472c3 692
f71869a4 693time_t mktimegm(struct tm *tm);
0c9fc6e1 694struct tm *brktimegm(time_t secs, struct tm *tm);
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695const char *small_strptime(const char *p, const char *fmt,
696 struct tm *dt);
697
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698struct in_addr;
699int resolve_host(struct in_addr *sin_addr, const char *hostname);
700
701void url_split(char *proto, int proto_size,
6ba5cbc6 702 char *authorization, int authorization_size,
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703 char *hostname, int hostname_size,
704 int *port_ptr,
705 char *path, int path_size,
706 const char *url);
707
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708int match_ext(const char *filename, const char *extensions);
709
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710#endif /* HAVE_AV_CONFIG_H */
711
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712#ifdef __cplusplus
713}
714#endif
715
fb025625 716#endif /* AVFORMAT_H */
f3356e9c 717