Commit | Line | Data |
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04d7f601 DB |
1 | /* |
2 | * copyright (c) 2001 Fabrice Bellard | |
3 | * | |
b78e7197 DB |
4 | * This file is part of FFmpeg. |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
04d7f601 DB |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either | |
b78e7197 | 9 | * version 2.1 of the License, or (at your option) any later version. |
04d7f601 | 10 | * |
b78e7197 | 11 | * FFmpeg is distributed in the hope that it will be useful, |
04d7f601 DB |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
b78e7197 | 17 | * License along with FFmpeg; if not, write to the Free Software |
04d7f601 DB |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | */ | |
20 | ||
98790382 SS |
21 | #ifndef AVFORMAT_AVFORMAT_H |
22 | #define AVFORMAT_AVFORMAT_H | |
de6d9b64 | 23 | |
800c289a | 24 | #define LIBAVFORMAT_VERSION_MAJOR 52 |
148bcae9 | 25 | #define LIBAVFORMAT_VERSION_MINOR 59 |
0f943ce6 | 26 | #define LIBAVFORMAT_VERSION_MICRO 0 |
e97ac1e6 | 27 | |
800c289a MR |
28 | #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ |
29 | LIBAVFORMAT_VERSION_MINOR, \ | |
30 | LIBAVFORMAT_VERSION_MICRO) | |
31 | #define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \ | |
32 | LIBAVFORMAT_VERSION_MINOR, \ | |
33 | LIBAVFORMAT_VERSION_MICRO) | |
5aa083ee | 34 | #define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT |
8026c3b5 | 35 | |
5aa083ee | 36 | #define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION) |
4b1f4f23 | 37 | |
c97429e2 | 38 | /** |
f2e77e4b AC |
39 | * I return the LIBAVFORMAT_VERSION_INT constant. You got |
40 | * a fucking problem with that, douchebag? | |
c97429e2 SS |
41 | */ |
42 | unsigned avformat_version(void); | |
43 | ||
c1736936 DB |
44 | /** |
45 | * Returns the libavformat build-time configuration. | |
46 | */ | |
41600690 | 47 | const char *avformat_configuration(void); |
c1736936 DB |
48 | |
49 | /** | |
50 | * Returns the libavformat license. | |
51 | */ | |
41600690 | 52 | const char *avformat_license(void); |
c1736936 | 53 | |
f71869a4 | 54 | #include <time.h> |
67070e4f | 55 | #include <stdio.h> /* FILE */ |
76a448ed | 56 | #include "libavcodec/avcodec.h" |
de6d9b64 | 57 | |
de6d9b64 FB |
58 | #include "avio.h" |
59 | ||
f610a9f2 AJ |
60 | struct AVFormatContext; |
61 | ||
a6d18a0e MN |
62 | |
63 | /* | |
ea29242c MM |
64 | * Public Metadata API. |
65 | * The metadata API allows libavformat to export metadata tags to a client | |
61648423 AK |
66 | * application using a sequence of key/value pairs. Like all strings in FFmpeg, |
67 | * metadata must be stored as UTF-8 encoded Unicode. Note that metadata | |
68 | * exported by demuxers isn't checked to be valid UTF-8 in most cases. | |
ea29242c MM |
69 | * Important concepts to keep in mind: |
70 | * 1. Keys are unique; there can never be 2 tags with the same key. This is | |
71 | * also meant semantically, i.e., a demuxer should not knowingly produce | |
72 | * several keys that are literally different but semantically identical. | |
73 | * E.g., key=Author5, key=Author6. In this example, all authors must be | |
74 | * placed in the same tag. | |
75 | * 2. Metadata is flat, not hierarchical; there are no subtags. If you | |
76 | * want to store, e.g., the email address of the child of producer Alice | |
77 | * and actor Bob, that could have key=alice_and_bobs_childs_email_address. | |
ca76a119 AK |
78 | * 3. Several modifiers can be applied to the tag name. This is done by |
79 | * appending a dash character ('-') and the modifier name in the order | |
80 | * they appear in the list below -- e.g. foo-eng-sort, not foo-sort-eng. | |
81 | * a) language -- a tag whose value is localized for a particular language | |
82 | * is appended with the ISO 639-2/B 3-letter language code. | |
83 | * For example: Author-ger=Michael, Author-eng=Mike | |
84 | * The original/default language is in the unqualified "Author" tag. | |
85 | * A demuxer should set a default if it sets any translated tag. | |
86 | * b) sorting -- a modified version of a tag that should be used for | |
87 | * sorting will have '-sort' appended. E.g. artist="The Beatles", | |
88 | * artist-sort="Beatles, The". | |
89 | * | |
90 | * 4. Tag names are normally exported exactly as stored in the container to | |
91 | * allow lossless remuxing to the same format. For container-independent | |
92 | * handling of metadata, av_metadata_conv() can convert it to ffmpeg generic | |
93 | * format. Follows a list of generic tag names: | |
94 | * | |
95 | * album -- name of the set this work belongs to | |
96 | * album_artist -- main creator of the set/album, if different from artist. | |
97 | * e.g. "Various Artists" for compilation albums. | |
98 | * artist -- main creator of the work | |
99 | * comment -- any additional description of the file. | |
100 | * composer -- who composed the work, if different from artist. | |
101 | * copyright -- name of copyright holder. | |
102 | * date -- date when the work was created, preferably in ISO 8601. | |
103 | * disc -- number of a subset, e.g. disc in a multi-disc collection. | |
104 | * encoder -- name/settings of the software/hardware that produced the file. | |
105 | * encoded_by -- person/group who created the file. | |
106 | * filename -- original name of the file. | |
107 | * genre -- <self-evident>. | |
108 | * language -- main language in which the work is performed, preferably | |
109 | * in ISO 639-2 format. | |
110 | * performer -- artist who performed the work, if different from artist. | |
111 | * E.g for "Also sprach Zarathustra", artist would be "Richard | |
112 | * Strauss" and performer "London Philharmonic Orchestra". | |
113 | * publisher -- name of the label/publisher. | |
114 | * title -- name of the work. | |
115 | * track -- number of this work in the set, can be in form current/total. | |
a6d18a0e MN |
116 | */ |
117 | ||
48a81c0f | 118 | #define AV_METADATA_MATCH_CASE 1 |
a6d18a0e | 119 | #define AV_METADATA_IGNORE_SUFFIX 2 |
a181981e MN |
120 | #define AV_METADATA_DONT_STRDUP_KEY 4 |
121 | #define AV_METADATA_DONT_STRDUP_VAL 8 | |
a6d18a0e MN |
122 | |
123 | typedef struct { | |
124 | char *key; | |
125 | char *value; | |
bc1d2afb | 126 | }AVMetadataTag; |
a6d18a0e | 127 | |
e232c252 | 128 | typedef struct AVMetadata AVMetadata; |
f610a9f2 | 129 | typedef struct AVMetadataConv AVMetadataConv; |
a6d18a0e MN |
130 | |
131 | /** | |
22e77e44 DB |
132 | * Gets a metadata element with matching key. |
133 | * @param prev Set to the previous matching element to find the next. | |
66b6c745 | 134 | * If set to NULL the first matching element is returned. |
22e77e44 DB |
135 | * @param flags Allows case as well as suffix-insensitive comparisons. |
136 | * @return Found tag or NULL, changing key or value leads to undefined behavior. | |
a6d18a0e | 137 | */ |
bc1d2afb | 138 | AVMetadataTag * |
e232c252 | 139 | av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags); |
a6d18a0e | 140 | |
a181981e | 141 | #if LIBAVFORMAT_VERSION_MAJOR == 52 |
a6d18a0e | 142 | /** |
22e77e44 DB |
143 | * Sets the given tag in m, overwriting an existing tag. |
144 | * @param key tag key to add to m (will be av_strduped) | |
145 | * @param value tag value to add to m (will be av_strduped) | |
146 | * @return >= 0 on success otherwise an error code <0 | |
a6d18a0e | 147 | */ |
5ea7ce88 | 148 | int av_metadata_set(AVMetadata **pm, const char *key, const char *value); |
a181981e MN |
149 | #endif |
150 | ||
151 | /** | |
152 | * Sets the given tag in m, overwriting an existing tag. | |
153 | * @param key tag key to add to m (will be av_strduped depending on flags) | |
154 | * @param value tag value to add to m (will be av_strduped depending on flags) | |
155 | * @return >= 0 on success otherwise an error code <0 | |
156 | */ | |
157 | int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags); | |
a6d18a0e | 158 | |
094d9df7 | 159 | /** |
d1b9adf2 | 160 | * Converts all the metadata sets from ctx according to the source and |
ca76a119 AK |
161 | * destination conversion tables. If one of the tables is NULL, then |
162 | * tags are converted to/from ffmpeg generic tag names. | |
f610a9f2 AJ |
163 | * @param d_conv destination tags format conversion table |
164 | * @param s_conv source tags format conversion table | |
165 | */ | |
166 | void av_metadata_conv(struct AVFormatContext *ctx,const AVMetadataConv *d_conv, | |
167 | const AVMetadataConv *s_conv); | |
168 | ||
169 | /** | |
22e77e44 | 170 | * Frees all the memory allocated for an AVMetadata struct. |
094d9df7 AJ |
171 | */ |
172 | void av_metadata_free(AVMetadata **m); | |
173 | ||
a6d18a0e | 174 | |
de6d9b64 FB |
175 | /* packet functions */ |
176 | ||
3217cb42 PI |
177 | |
178 | /** | |
d1b9adf2 SS |
179 | * Allocates and reads the payload of a packet and initializes its |
180 | * fields with default values. | |
3217cb42 PI |
181 | * |
182 | * @param pkt packet | |
4f57fa8c DB |
183 | * @param size desired payload size |
184 | * @return >0 (read size) if OK, AVERROR_xxx otherwise | |
3217cb42 | 185 | */ |
2692067a | 186 | int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size); |
3217cb42 | 187 | |
de6d9b64 FB |
188 | |
189 | /*************************************************/ | |
916c80e9 FB |
190 | /* fractional numbers for exact pts handling */ |
191 | ||
671adb17 | 192 | /** |
4f57fa8c DB |
193 | * The exact value of the fractional number is: 'val + num / den'. |
194 | * num is assumed to be 0 <= num < den. | |
4c08b2bd | 195 | */ |
916c80e9 | 196 | typedef struct AVFrac { |
115329f1 | 197 | int64_t val, num, den; |
52e57500 | 198 | } AVFrac; |
916c80e9 | 199 | |
916c80e9 | 200 | /*************************************************/ |
b9a281db | 201 | /* input/output formats */ |
de6d9b64 | 202 | |
7caf0cc6 MN |
203 | struct AVCodecTag; |
204 | ||
4f57fa8c | 205 | /** This structure contains the data a format has to probe a file. */ |
b9a281db | 206 | typedef struct AVProbeData { |
5c91a675 | 207 | const char *filename; |
e5f58f81 | 208 | unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. */ |
209 | int buf_size; /**< Size of buf except extra allocated bytes */ | |
b9a281db FB |
210 | } AVProbeData; |
211 | ||
22e77e44 | 212 | #define AVPROBE_SCORE_MAX 100 ///< maximum score, half of that is used for file-extension-based detection |
87e87886 | 213 | #define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer |
de6d9b64 FB |
214 | |
215 | typedef struct AVFormatParameters { | |
c0df9d75 | 216 | AVRational time_base; |
de6d9b64 FB |
217 | int sample_rate; |
218 | int channels; | |
219 | int width; | |
220 | int height; | |
4606ac8d | 221 | enum PixelFormat pix_fmt; |
4f57fa8c DB |
222 | int channel; /**< Used to select DV channel. */ |
223 | const char *standard; /**< TV standard, NTSC, PAL, SECAM */ | |
224 | unsigned int mpeg2ts_raw:1; /**< Force raw MPEG-2 transport stream output, if possible. */ | |
225 | unsigned int mpeg2ts_compute_pcr:1; /**< Compute exact PCR for each transport | |
72e043dd | 226 | stream packet (only meaningful if |
4f57fa8c DB |
227 | mpeg2ts_raw is TRUE). */ |
228 | unsigned int initial_pause:1; /**< Do not begin to play the stream | |
229 | immediately (RTSP only). */ | |
72e043dd | 230 | unsigned int prealloced_context:1; |
71957315 | 231 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
5b6d5596 MN |
232 | enum CodecID video_codec_id; |
233 | enum CodecID audio_codec_id; | |
71957315 | 234 | #endif |
de6d9b64 FB |
235 | } AVFormatParameters; |
236 | ||
4f57fa8c | 237 | //! Demuxer will use url_fopen, no opened file should be provided by the caller. |
40d9c544 | 238 | #define AVFMT_NOFILE 0x0001 |
4f57fa8c DB |
239 | #define AVFMT_NEEDNUMBER 0x0002 /**< Needs '%d' in filename. */ |
240 | #define AVFMT_SHOW_IDS 0x0008 /**< Show format stream IDs numbers. */ | |
241 | #define AVFMT_RAWPICTURE 0x0020 /**< Format wants AVPicture structure for | |
242 | raw picture data. */ | |
243 | #define AVFMT_GLOBALHEADER 0x0040 /**< Format wants global header. */ | |
244 | #define AVFMT_NOTIMESTAMPS 0x0080 /**< Format does not need / have any timestamps. */ | |
245 | #define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */ | |
246 | #define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. */ | |
25918212 | 247 | #define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */ |
ab5a0175 | 248 | #define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */ |
b9a281db FB |
249 | |
250 | typedef struct AVOutputFormat { | |
de6d9b64 | 251 | const char *name; |
bde15e74 SS |
252 | /** |
253 | * Descriptive name for the format, meant to be more human-readable | |
819174fa | 254 | * than name. You should use the NULL_IF_CONFIG_SMALL() macro |
bde15e74 SS |
255 | * to define it. |
256 | */ | |
de6d9b64 FB |
257 | const char *long_name; |
258 | const char *mime_type; | |
4f57fa8c | 259 | const char *extensions; /**< comma-separated filename extensions */ |
22e77e44 | 260 | /** size of private data so that it can be allocated in the wrapper */ |
b9a281db | 261 | int priv_data_size; |
de6d9b64 | 262 | /* output support */ |
43d414ba PI |
263 | enum CodecID audio_codec; /**< default audio codec */ |
264 | enum CodecID video_codec; /**< default video codec */ | |
de6d9b64 | 265 | int (*write_header)(struct AVFormatContext *); |
e928649b | 266 | int (*write_packet)(struct AVFormatContext *, AVPacket *pkt); |
de6d9b64 | 267 | int (*write_trailer)(struct AVFormatContext *); |
43d414ba | 268 | /** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */ |
b9a281db | 269 | int flags; |
4f57fa8c | 270 | /** Currently only used to set pixel format if not YUV420P. */ |
290c5fa6 | 271 | int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *); |
78cb7273 DB |
272 | int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, |
273 | AVPacket *in, int flush); | |
7caf0cc6 MN |
274 | |
275 | /** | |
78cb7273 | 276 | * List of supported codec_id-codec_tag pairs, ordered by "better |
22e77e44 | 277 | * choice first". The arrays are all terminated by CODEC_ID_NONE. |
7caf0cc6 | 278 | */ |
c1854592 | 279 | const struct AVCodecTag * const *codec_tag; |
7caf0cc6 | 280 | |
11bf3847 AJ |
281 | enum CodecID subtitle_codec; /**< default subtitle codec */ |
282 | ||
719e721a | 283 | const AVMetadataConv *metadata_conv; |
f610a9f2 | 284 | |
b9a281db FB |
285 | /* private fields */ |
286 | struct AVOutputFormat *next; | |
287 | } AVOutputFormat; | |
de6d9b64 | 288 | |
b9a281db FB |
289 | typedef struct AVInputFormat { |
290 | const char *name; | |
bde15e74 SS |
291 | /** |
292 | * Descriptive name for the format, meant to be more human-readable | |
819174fa | 293 | * than name. You should use the NULL_IF_CONFIG_SMALL() macro |
bde15e74 SS |
294 | * to define it. |
295 | */ | |
b9a281db | 296 | const char *long_name; |
4f57fa8c | 297 | /** Size of private data so that it can be allocated in the wrapper. */ |
b9a281db | 298 | int priv_data_size; |
65d7d68b | 299 | /** |
22e77e44 | 300 | * Tell if a given file has a chance of being parsed as this format. |
5d81d641 DB |
301 | * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes |
302 | * big so you do not have to check for that unless you need more. | |
65d7d68b | 303 | */ |
b9a281db | 304 | int (*read_probe)(AVProbeData *); |
4f57fa8c DB |
305 | /** Read the format header and initialize the AVFormatContext |
306 | structure. Return 0 if OK. 'ap' if non-NULL contains | |
307 | additional parameters. Only used in raw format right | |
b9a281db | 308 | now. 'av_new_stream' should be called to create new streams. */ |
de6d9b64 FB |
309 | int (*read_header)(struct AVFormatContext *, |
310 | AVFormatParameters *ap); | |
4f57fa8c | 311 | /** Read one packet and put it in 'pkt'. pts and flags are also |
b9a281db | 312 | set. 'av_new_stream' can be called only if the flag |
6883ebe4 RD |
313 | AVFMTCTX_NOHEADER is used. |
314 | @return 0 on success, < 0 on error. | |
315 | When returning an error, pkt must not have been allocated | |
316 | or must be freed before returning */ | |
de6d9b64 | 317 | int (*read_packet)(struct AVFormatContext *, AVPacket *pkt); |
4f57fa8c | 318 | /** Close the stream. The AVFormatContext and AVStreams are not |
de6d9b64 FB |
319 | freed by this function */ |
320 | int (*read_close)(struct AVFormatContext *); | |
1de2db8f MN |
321 | |
322 | #if LIBAVFORMAT_VERSION_MAJOR < 53 | |
115329f1 | 323 | /** |
4f57fa8c DB |
324 | * Seek to a given timestamp relative to the frames in |
325 | * stream component stream_index. | |
22e77e44 DB |
326 | * @param stream_index Must not be -1. |
327 | * @param flags Selects which direction should be preferred if no exact | |
328 | * match is available. | |
05ce0f11 | 329 | * @return >= 0 on success (but not necessarily the new offset) |
3ba1438d | 330 | */ |
115329f1 | 331 | int (*read_seek)(struct AVFormatContext *, |
3ba1438d | 332 | int stream_index, int64_t timestamp, int flags); |
1de2db8f | 333 | #endif |
8d14a25c | 334 | /** |
4f57fa8c | 335 | * Gets the next timestamp in stream[stream_index].time_base units. |
d9526386 | 336 | * @return the timestamp or AV_NOPTS_VALUE if an error occurred |
8d14a25c MN |
337 | */ |
338 | int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index, | |
339 | int64_t *pos, int64_t pos_limit); | |
4f57fa8c | 340 | /** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. */ |
de6d9b64 | 341 | int flags; |
4f57fa8c | 342 | /** If extensions are defined, then no probe is done. You should |
b9a281db FB |
343 | usually not use extension format guessing because it is not |
344 | reliable enough */ | |
345 | const char *extensions; | |
4f57fa8c | 346 | /** General purpose read-only value that the format can use. */ |
b9a281db | 347 | int value; |
fb2758c8 | 348 | |
d1b9adf2 | 349 | /** Starts/resumes playing - only meaningful if using a network-based format |
4f57fa8c | 350 | (RTSP). */ |
fb2758c8 FB |
351 | int (*read_play)(struct AVFormatContext *); |
352 | ||
d1b9adf2 | 353 | /** Pauses playing - only meaningful if using a network-based format |
4f57fa8c | 354 | (RTSP). */ |
fb2758c8 FB |
355 | int (*read_pause)(struct AVFormatContext *); |
356 | ||
c1854592 | 357 | const struct AVCodecTag * const *codec_tag; |
7caf0cc6 | 358 | |
1de2db8f | 359 | /** |
d1b9adf2 | 360 | * Seeks to timestamp ts. |
1de2db8f MN |
361 | * Seeking will be done so that the point from which all active streams |
362 | * can be presented successfully will be closest to ts and within min/max_ts. | |
363 | * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. | |
364 | */ | |
882fb0a3 | 365 | int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); |
1de2db8f | 366 | |
719e721a | 367 | const AVMetadataConv *metadata_conv; |
f610a9f2 | 368 | |
b9a281db FB |
369 | /* private fields */ |
370 | struct AVInputFormat *next; | |
371 | } AVInputFormat; | |
de6d9b64 | 372 | |
57004ff1 AJ |
373 | enum AVStreamParseType { |
374 | AVSTREAM_PARSE_NONE, | |
375 | AVSTREAM_PARSE_FULL, /**< full parsing and repack */ | |
4f57fa8c | 376 | AVSTREAM_PARSE_HEADERS, /**< Only parse headers, do not repack. */ |
78cb7273 | 377 | AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */ |
57004ff1 AJ |
378 | }; |
379 | ||
fb2758c8 FB |
380 | typedef struct AVIndexEntry { |
381 | int64_t pos; | |
382 | int64_t timestamp; | |
383 | #define AVINDEX_KEYFRAME 0x0001 | |
30a43f2d | 384 | int flags:2; |
4f57fa8c DB |
385 | int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment). |
386 | int min_distance; /**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. */ | |
fb2758c8 FB |
387 | } AVIndexEntry; |
388 | ||
90c2295b ES |
389 | #define AV_DISPOSITION_DEFAULT 0x0001 |
390 | #define AV_DISPOSITION_DUB 0x0002 | |
391 | #define AV_DISPOSITION_ORIGINAL 0x0004 | |
392 | #define AV_DISPOSITION_COMMENT 0x0008 | |
393 | #define AV_DISPOSITION_LYRICS 0x0010 | |
394 | #define AV_DISPOSITION_KARAOKE 0x0020 | |
395 | ||
ba66ae94 MN |
396 | /** |
397 | * Stream structure. | |
398 | * New fields can be added to the end with minor version bumps. | |
8bfb108b | 399 | * Removal, reordering and changes to existing fields require a major |
ba66ae94 | 400 | * version bump. |
8bfb108b | 401 | * sizeof(AVStream) must not be used outside libav*. |
ba66ae94 | 402 | */ |
de6d9b64 | 403 | typedef struct AVStream { |
43d414ba | 404 | int index; /**< stream index in AVFormatContext */ |
4f57fa8c | 405 | int id; /**< format-specific stream ID */ |
43d414ba | 406 | AVCodecContext *codec; /**< codec context */ |
b4b87d48 | 407 | /** |
22e77e44 DB |
408 | * Real base framerate of the stream. |
409 | * This is the lowest framerate with which all timestamps can be | |
864ff8c1 | 410 | * represented accurately (it is the least common multiple of all |
22e77e44 DB |
411 | * framerates in the stream). Note, this value is just a guess! |
412 | * For example, if the time base is 1/90000 and all frames have either | |
4f57fa8c | 413 | * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1. |
b4b87d48 MN |
414 | */ |
415 | AVRational r_frame_rate; | |
de6d9b64 | 416 | void *priv_data; |
82583548 | 417 | |
b9a281db | 418 | /* internal data used in av_find_stream_info() */ |
82583548 | 419 | int64_t first_dts; |
4f57fa8c | 420 | /** encoding: pts generation when outputting stream */ |
a9fd2b19 | 421 | struct AVFrac pts; |
5b28c8c3 MN |
422 | |
423 | /** | |
8bfb108b DB |
424 | * This is the fundamental unit of time (in seconds) in terms |
425 | * of which frame timestamps are represented. For fixed-fps content, | |
22e77e44 | 426 | * time base should be 1/framerate and timestamp increments should be 1. |
5b28c8c3 | 427 | */ |
9ee91c2f | 428 | AVRational time_base; |
43d414ba | 429 | int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */ |
a48b7a6b | 430 | /* ffmpeg.c private use */ |
4f57fa8c DB |
431 | int stream_copy; /**< If set, just copy stream. */ |
432 | enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed. | |
b4aea108 | 433 | //FIXME move stuff to a flags field? |
4f57fa8c | 434 | /** Quality, as it has been removed from AVCodecContext and put in AVVideoFrame. |
755bfeab | 435 | * MN: dunno if that is the right place for it */ |
115329f1 | 436 | float quality; |
6d96a9b9 | 437 | /** |
8bfb108b DB |
438 | * Decoding: pts of the first frame of the stream, in stream time base. |
439 | * Only set this if you are absolutely 100% sure that the value you set | |
440 | * it to really is the pts of the first frame. | |
4854c253 | 441 | * This may be undefined (AV_NOPTS_VALUE). |
8bfb108b DB |
442 | * @note The ASF header does NOT contain a correct start_time the ASF |
443 | * demuxer must NOT set this. | |
6d96a9b9 | 444 | */ |
115329f1 | 445 | int64_t start_time; |
e26381b6 | 446 | /** |
8bfb108b | 447 | * Decoding: duration of the stream, in stream time base. |
e26381b6 | 448 | * If a source file does not specify a duration, but does specify |
4f57fa8c | 449 | * a bitrate, this value will be estimated from bitrate and file size. |
e26381b6 | 450 | */ |
ee404803 | 451 | int64_t duration; |
fb2758c8 | 452 | |
827f7e28 | 453 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
7e030c47 | 454 | char language[4]; /** ISO 639-2/B 3-letter language code (empty string if undefined) */ |
827f7e28 | 455 | #endif |
09730260 | 456 | |
fb2758c8 | 457 | /* av_read_frame() support */ |
57004ff1 | 458 | enum AVStreamParseType need_parsing; |
fb2758c8 | 459 | struct AVCodecParserContext *parser; |
6ec87caa | 460 | |
fb2758c8 | 461 | int64_t cur_dts; |
635fbcb1 MN |
462 | int last_IP_duration; |
463 | int64_t last_IP_pts; | |
fb2758c8 | 464 | /* av_seek_frame() support */ |
4f57fa8c DB |
465 | AVIndexEntry *index_entries; /**< Only used if the format does not |
466 | support seeking natively. */ | |
fb2758c8 | 467 | int nb_index_entries; |
191e8ca7 | 468 | unsigned int index_entries_allocated_size; |
115329f1 | 469 | |
b4b87d48 | 470 | int64_t nb_frames; ///< number of frames in this stream if known or 0 |
504ee036 | 471 | |
0d84a8f6 BC |
472 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
473 | int64_t unused[4+1]; | |
f8d7c9d3 ES |
474 | |
475 | char *filename; /**< source filename of the stream */ | |
827f7e28 | 476 | #endif |
90c2295b | 477 | |
4f57fa8c | 478 | int disposition; /**< AV_DISPOSITION_* bit field */ |
0bef08e5 MN |
479 | |
480 | AVProbeData probe_data; | |
0d84a8f6 BC |
481 | #define MAX_REORDER_DELAY 16 |
482 | int64_t pts_buffer[MAX_REORDER_DELAY+1]; | |
c30a4489 AJ |
483 | |
484 | /** | |
485 | * sample aspect ratio (0 if unknown) | |
486 | * - encoding: Set by user. | |
487 | * - decoding: Set by libavformat. | |
488 | */ | |
489 | AVRational sample_aspect_ratio; | |
f526adaf | 490 | |
e232c252 | 491 | AVMetadata *metadata; |
3a41c2f7 MN |
492 | |
493 | /* av_read_frame() support */ | |
494 | const uint8_t *cur_ptr; | |
495 | int cur_len; | |
496 | AVPacket cur_pkt; | |
27ca0a79 IS |
497 | |
498 | // Timestamp generation support: | |
499 | /** | |
500 | * Timestamp corresponding to the last dts sync point. | |
501 | * | |
502 | * Initialized when AVCodecParserContext.dts_sync_point >= 0 and | |
503 | * a DTS is received from the underlying container. Otherwise set to | |
504 | * AV_NOPTS_VALUE by default. | |
505 | */ | |
506 | int64_t reference_dts; | |
86cb7e33 BC |
507 | |
508 | /** | |
509 | * Number of packets to buffer for codec probing | |
510 | * NOT PART OF PUBLIC API | |
511 | */ | |
48616887 | 512 | #define MAX_PROBE_PACKETS 2500 |
86cb7e33 | 513 | int probe_packets; |
ddce56ef MN |
514 | |
515 | /** | |
e07b882b | 516 | * last packet in packet_buffer for this stream when muxing. |
ddce56ef MN |
517 | * used internally, NOT PART OF PUBLIC API, dont read or write from outside of libav* |
518 | */ | |
e07b882b | 519 | struct AVPacketList *last_in_packet_buffer; |
02b398ef MN |
520 | |
521 | /** | |
522 | * Average framerate | |
523 | */ | |
524 | AVRational avg_frame_rate; | |
6c6e6ef5 MN |
525 | |
526 | /** | |
527 | * Number of frames that have been demuxed during av_find_stream_info() | |
528 | */ | |
529 | int codec_info_nb_frames; | |
de6d9b64 FB |
530 | } AVStream; |
531 | ||
15afa396 NS |
532 | #define AV_PROGRAM_RUNNING 1 |
533 | ||
ba66ae94 | 534 | /** |
ba66ae94 | 535 | * New fields can be added to the end with minor version bumps. |
8bfb108b | 536 | * Removal, reordering and changes to existing fields require a major |
ba66ae94 | 537 | * version bump. |
8bfb108b | 538 | * sizeof(AVProgram) must not be used outside libav*. |
ba66ae94 | 539 | */ |
15afa396 NS |
540 | typedef struct AVProgram { |
541 | int id; | |
827f7e28 | 542 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
4f57fa8c DB |
543 | char *provider_name; ///< network name for DVB streams |
544 | char *name; ///< service name for DVB streams | |
827f7e28 | 545 | #endif |
15afa396 NS |
546 | int flags; |
547 | enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller | |
526efa10 NS |
548 | unsigned int *stream_index; |
549 | unsigned int nb_stream_indexes; | |
e232c252 | 550 | AVMetadata *metadata; |
15afa396 NS |
551 | } AVProgram; |
552 | ||
43d414ba | 553 | #define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present |
da24c5e3 FB |
554 | (streams are added dynamically) */ |
555 | ||
79d7836a | 556 | typedef struct AVChapter { |
4f57fa8c DB |
557 | int id; ///< unique ID to identify the chapter |
558 | AVRational time_base; ///< time base in which the start/end timestamps are specified | |
8931e7b4 | 559 | int64_t start, end; ///< chapter start/end time in time_base units |
827f7e28 | 560 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
c2fb6be4 | 561 | char *title; ///< chapter title |
827f7e28 | 562 | #endif |
e232c252 | 563 | AVMetadata *metadata; |
79d7836a AK |
564 | } AVChapter; |
565 | ||
ad5cc780 | 566 | #if LIBAVFORMAT_VERSION_MAJOR < 53 |
de6d9b64 | 567 | #define MAX_STREAMS 20 |
ad5cc780 JM |
568 | #else |
569 | #define MAX_STREAMS 100 | |
570 | #endif | |
de6d9b64 | 571 | |
252f17e2 | 572 | /** |
4f57fa8c | 573 | * Format I/O context. |
252f17e2 | 574 | * New fields can be added to the end with minor version bumps. |
8bfb108b | 575 | * Removal, reordering and changes to existing fields require a major |
252f17e2 | 576 | * version bump. |
8bfb108b | 577 | * sizeof(AVFormatContext) must not be used outside libav*. |
252f17e2 | 578 | */ |
de6d9b64 | 579 | typedef struct AVFormatContext { |
1447aac4 | 580 | const AVClass *av_class; /**< Set by avformat_alloc_context. */ |
4f57fa8c | 581 | /* Can only be iformat or oformat, not both at the same time. */ |
b9a281db FB |
582 | struct AVInputFormat *iformat; |
583 | struct AVOutputFormat *oformat; | |
de6d9b64 | 584 | void *priv_data; |
899681cd | 585 | ByteIOContext *pb; |
db69c2e5 | 586 | unsigned int nb_streams; |
de6d9b64 | 587 | AVStream *streams[MAX_STREAMS]; |
43d414ba | 588 | char filename[1024]; /**< input or output filename */ |
de6d9b64 | 589 | /* stream info */ |
4568325a | 590 | int64_t timestamp; |
827f7e28 | 591 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
de6d9b64 FB |
592 | char title[512]; |
593 | char author[512]; | |
594 | char copyright[512]; | |
595 | char comment[512]; | |
6a58e151 | 596 | char album[512]; |
43d414ba PI |
597 | int year; /**< ID3 year, 0 if none */ |
598 | int track; /**< track number, 0 if none */ | |
599 | char genre[32]; /**< ID3 genre */ | |
827f7e28 | 600 | #endif |
6a58e151 | 601 | |
4f57fa8c DB |
602 | int ctx_flags; /**< Format-specific flags, see AVFMTCTX_xx */ |
603 | /* private data for pts handling (do not modify directly). */ | |
43d414ba | 604 | /** This buffer is only needed when packets were already buffered but |
4f57fa8c DB |
605 | not decoded, for example to get the codec parameters in MPEG |
606 | streams. */ | |
ee404803 FB |
607 | struct AVPacketList *packet_buffer; |
608 | ||
4f57fa8c | 609 | /** Decoding: position of the first frame of the component, in |
ee404803 | 610 | AV_TIME_BASE fractional seconds. NEVER set this value directly: |
4f57fa8c | 611 | It is deduced from the AVStream values. */ |
115329f1 | 612 | int64_t start_time; |
4f57fa8c | 613 | /** Decoding: duration of the stream, in AV_TIME_BASE fractional |
ee404803 FB |
614 | seconds. NEVER set this value directly: it is deduced from the |
615 | AVStream values. */ | |
616 | int64_t duration; | |
4f57fa8c | 617 | /** decoding: total file size, 0 if unknown */ |
ee404803 | 618 | int64_t file_size; |
4f57fa8c | 619 | /** Decoding: total stream bitrate in bit/s, 0 if not |
ee404803 | 620 | available. Never set it directly if the file_size and the |
22e77e44 | 621 | duration are known as FFmpeg can compute it automatically. */ |
ee404803 | 622 | int bit_rate; |
fb2758c8 FB |
623 | |
624 | /* av_read_frame() support */ | |
625 | AVStream *cur_st; | |
3a41c2f7 MN |
626 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
627 | const uint8_t *cur_ptr_deprecated; | |
628 | int cur_len_deprecated; | |
629 | AVPacket cur_pkt_deprecated; | |
630 | #endif | |
fb2758c8 | 631 | |
fb2758c8 | 632 | /* av_seek_frame() support */ |
43d414ba | 633 | int64_t data_offset; /** offset of the first packet */ |
fb2758c8 | 634 | int index_built; |
115329f1 | 635 | |
2db3c638 | 636 | int mux_rate; |
92400be2 | 637 | unsigned int packet_size; |
17c88cb0 MN |
638 | int preload; |
639 | int max_delay; | |
8108551a | 640 | |
115329f1 DB |
641 | #define AVFMT_NOOUTPUTLOOP -1 |
642 | #define AVFMT_INFINITEOUTPUTLOOP 0 | |
43d414ba | 643 | /** number of times to loop output in formats that support it */ |
8108551a | 644 | int loop_output; |
115329f1 | 645 | |
30bc6613 | 646 | int flags; |
22e77e44 | 647 | #define AVFMT_FLAG_GENPTS 0x0001 ///< Generate missing pts even if it requires parsing future frames. |
4f57fa8c DB |
648 | #define AVFMT_FLAG_IGNIDX 0x0002 ///< Ignore index. |
649 | #define AVFMT_FLAG_NONBLOCK 0x0004 ///< Do not block when reading packets from input. | |
c55806e3 | 650 | #define AVFMT_FLAG_IGNDTS 0x0008 ///< Ignore DTS on frames that contain both DTS & PTS |
fe8344a2 MN |
651 | #define AVFMT_FLAG_NOFILLIN 0x0010 ///< Do not infer any values from other values, just return what is stored in the container |
652 | #define AVFMT_FLAG_NOPARSE 0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled | |
5894e1bb VP |
653 | |
654 | int loop_input; | |
22e77e44 | 655 | /** decoding: size of data to probe; encoding: unused. */ |
9e6c9470 | 656 | unsigned int probesize; |
a44b3c4d MN |
657 | |
658 | /** | |
4f57fa8c DB |
659 | * Maximum time (in AV_TIME_BASE units) during which the input should |
660 | * be analyzed in av_find_stream_info(). | |
a44b3c4d MN |
661 | */ |
662 | int max_analyze_duration; | |
c964c2c7 RD |
663 | |
664 | const uint8_t *key; | |
665 | int keylen; | |
15afa396 NS |
666 | |
667 | unsigned int nb_programs; | |
668 | AVProgram **programs; | |
62600469 MN |
669 | |
670 | /** | |
671 | * Forced video codec_id. | |
4f57fa8c | 672 | * Demuxing: Set by user. |
62600469 MN |
673 | */ |
674 | enum CodecID video_codec_id; | |
675 | /** | |
676 | * Forced audio codec_id. | |
4f57fa8c | 677 | * Demuxing: Set by user. |
62600469 MN |
678 | */ |
679 | enum CodecID audio_codec_id; | |
680 | /** | |
681 | * Forced subtitle codec_id. | |
4f57fa8c | 682 | * Demuxing: Set by user. |
62600469 MN |
683 | */ |
684 | enum CodecID subtitle_codec_id; | |
3dea63bd PK |
685 | |
686 | /** | |
22e77e44 DB |
687 | * Maximum amount of memory in bytes to use for the index of each stream. |
688 | * If the index exceeds this size, entries will be discarded as | |
3dea63bd PK |
689 | * needed to maintain a smaller size. This can lead to slower or less |
690 | * accurate seeking (depends on demuxer). | |
4f57fa8c | 691 | * Demuxers for which a full in-memory index is mandatory will ignore |
3dea63bd PK |
692 | * this. |
693 | * muxing : unused | |
694 | * demuxing: set by user | |
695 | */ | |
696 | unsigned int max_index_size; | |
ab8ab30c RP |
697 | |
698 | /** | |
ffa71b2b | 699 | * Maximum amount of memory in bytes to use for buffering frames |
4f57fa8c | 700 | * obtained from realtime capture devices. |
ab8ab30c RP |
701 | */ |
702 | unsigned int max_picture_buffer; | |
79d7836a | 703 | |
fbabf1e9 | 704 | unsigned int nb_chapters; |
79d7836a | 705 | AVChapter **chapters; |
45b2b05f MN |
706 | |
707 | /** | |
4f57fa8c | 708 | * Flags to enable debugging. |
45b2b05f MN |
709 | */ |
710 | int debug; | |
711 | #define FF_FDEBUG_TS 0x0001 | |
0bef08e5 MN |
712 | |
713 | /** | |
4f57fa8c | 714 | * Raw packets from the demuxer, prior to parsing and decoding. |
0bef08e5 MN |
715 | * This buffer is used for buffering packets until the codec can |
716 | * be identified, as parsing cannot be done without knowing the | |
717 | * codec. | |
718 | */ | |
719 | struct AVPacketList *raw_packet_buffer; | |
5c5b1731 MR |
720 | struct AVPacketList *raw_packet_buffer_end; |
721 | ||
722 | struct AVPacketList *packet_buffer_end; | |
47146dfb | 723 | |
e232c252 | 724 | AVMetadata *metadata; |
af122d6a BC |
725 | |
726 | /** | |
727 | * Remaining size available for raw_packet_buffer, in bytes. | |
728 | * NOT PART OF PUBLIC API | |
729 | */ | |
48616887 | 730 | #define RAW_PACKET_BUFFER_SIZE 2500000 |
af122d6a | 731 | int raw_packet_buffer_remaining_size; |
b8819c85 MS |
732 | |
733 | /** | |
734 | * Start time of the stream in real world time, in microseconds | |
735 | * since the unix epoch (00:00 1st January 1970). That is, pts=0 | |
736 | * in the stream was captured at this real world time. | |
737 | * - encoding: Set by user. | |
738 | * - decoding: Unused. | |
739 | */ | |
740 | int64_t start_time_realtime; | |
de6d9b64 FB |
741 | } AVFormatContext; |
742 | ||
743 | typedef struct AVPacketList { | |
744 | AVPacket pkt; | |
745 | struct AVPacketList *next; | |
746 | } AVPacketList; | |
747 | ||
84be6e72 | 748 | #if LIBAVFORMAT_VERSION_INT < (53<<16) |
b9a281db FB |
749 | extern AVInputFormat *first_iformat; |
750 | extern AVOutputFormat *first_oformat; | |
84be6e72 MN |
751 | #endif |
752 | ||
aeedac95 SS |
753 | /** |
754 | * If f is NULL, returns the first registered input format, | |
22e77e44 | 755 | * if f is non-NULL, returns the next registered input format after f |
aeedac95 SS |
756 | * or NULL if f is the last one. |
757 | */ | |
84be6e72 | 758 | AVInputFormat *av_iformat_next(AVInputFormat *f); |
aeedac95 SS |
759 | |
760 | /** | |
761 | * If f is NULL, returns the first registered output format, | |
22e77e44 | 762 | * if f is non-NULL, returns the next registered output format after f |
aeedac95 SS |
763 | * or NULL if f is the last one. |
764 | */ | |
84be6e72 | 765 | AVOutputFormat *av_oformat_next(AVOutputFormat *f); |
de6d9b64 | 766 | |
5b6d5596 | 767 | enum CodecID av_guess_image2_codec(const char *filename); |
290c5fa6 | 768 | |
22e77e44 DB |
769 | /* XXX: Use automatic init with either ELF sections or C file parser */ |
770 | /* modules. */ | |
de6d9b64 | 771 | |
b9a281db | 772 | /* utils.c */ |
b9a281db FB |
773 | void av_register_input_format(AVInputFormat *format); |
774 | void av_register_output_format(AVOutputFormat *format); | |
1642ee43 SS |
775 | #if LIBAVFORMAT_VERSION_MAJOR < 53 |
776 | attribute_deprecated AVOutputFormat *guess_stream_format(const char *short_name, | |
78cb7273 DB |
777 | const char *filename, |
778 | const char *mime_type); | |
a1f547b9 SS |
779 | |
780 | /** | |
781 | * @deprecated Use av_guess_format() instead. | |
782 | */ | |
783 | attribute_deprecated AVOutputFormat *guess_format(const char *short_name, | |
784 | const char *filename, | |
785 | const char *mime_type); | |
1642ee43 | 786 | #endif |
f48b0fa2 SS |
787 | |
788 | /** | |
789 | * Returns the output format in the list of registered output formats | |
790 | * which best matches the provided parameters, or returns NULL if | |
791 | * there is no match. | |
792 | * | |
793 | * @param short_name if non-NULL checks if short_name matches with the | |
794 | * names of the registered formats | |
795 | * @param filename if non-NULL checks if filename terminates with the | |
796 | * extensions of the registered formats | |
797 | * @param mime_type if non-NULL checks if mime_type matches with the | |
798 | * MIME type of the registered formats | |
799 | */ | |
a1f547b9 | 800 | AVOutputFormat *av_guess_format(const char *short_name, |
94b1f338 SS |
801 | const char *filename, |
802 | const char *mime_type); | |
3217cb42 PI |
803 | |
804 | /** | |
4f57fa8c | 805 | * Guesses the codec ID based upon muxer and filename. |
3217cb42 | 806 | */ |
115329f1 | 807 | enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, |
78cb7273 | 808 | const char *filename, const char *mime_type, |
72415b2a | 809 | enum AVMediaType type); |
de6d9b64 | 810 | |
3217cb42 | 811 | /** |
d1b9adf2 | 812 | * Sends a nice hexadecimal dump of a buffer to the specified file stream. |
750f0e1f PI |
813 | * |
814 | * @param f The file stream pointer where the dump should be sent to. | |
3217cb42 PI |
815 | * @param buf buffer |
816 | * @param size buffer size | |
750f0e1f PI |
817 | * |
818 | * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log | |
3217cb42 | 819 | */ |
fb2758c8 | 820 | void av_hex_dump(FILE *f, uint8_t *buf, int size); |
3217cb42 PI |
821 | |
822 | /** | |
d1b9adf2 | 823 | * Sends a nice hexadecimal dump of a buffer to the log. |
750f0e1f PI |
824 | * |
825 | * @param avcl A pointer to an arbitrary struct of which the first field is a | |
826 | * pointer to an AVClass struct. | |
827 | * @param level The importance level of the message, lower values signifying | |
828 | * higher importance. | |
829 | * @param buf buffer | |
830 | * @param size buffer size | |
831 | * | |
832 | * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log | |
833 | */ | |
834 | void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size); | |
835 | ||
836 | /** | |
d1b9adf2 | 837 | * Sends a nice dump of a packet to the specified file stream. |
750f0e1f PI |
838 | * |
839 | * @param f The file stream pointer where the dump should be sent to. | |
3217cb42 | 840 | * @param pkt packet to dump |
4f57fa8c | 841 | * @param dump_payload True if the payload must be displayed, too. |
3217cb42 | 842 | */ |
fb2758c8 | 843 | void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload); |
de6d9b64 | 844 | |
750f0e1f | 845 | /** |
d1b9adf2 | 846 | * Sends a nice dump of a packet to the log. |
750f0e1f PI |
847 | * |
848 | * @param avcl A pointer to an arbitrary struct of which the first field is a | |
849 | * pointer to an AVClass struct. | |
850 | * @param level The importance level of the message, lower values signifying | |
851 | * higher importance. | |
852 | * @param pkt packet to dump | |
4f57fa8c | 853 | * @param dump_payload True if the payload must be displayed, too. |
750f0e1f PI |
854 | */ |
855 | void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload); | |
856 | ||
4815e246 | 857 | /** |
d1b9adf2 | 858 | * Initializes libavformat and registers all the muxers, demuxers and |
4815e246 SS |
859 | * protocols. If you do not call this function, then you can select |
860 | * exactly which formats you want to support. | |
861 | * | |
862 | * @see av_register_input_format() | |
863 | * @see av_register_output_format() | |
5d377501 | 864 | * @see av_register_protocol() |
4815e246 | 865 | */ |
94988531 | 866 | void av_register_all(void); |
de6d9b64 | 867 | |
43d414ba | 868 | /** codec tag <-> codec id */ |
15545a09 SS |
869 | enum CodecID av_codec_get_id(const struct AVCodecTag * const *tags, unsigned int tag); |
870 | unsigned int av_codec_get_tag(const struct AVCodecTag * const *tags, enum CodecID id); | |
7caf0cc6 | 871 | |
b9a281db | 872 | /* media file input */ |
3217cb42 PI |
873 | |
874 | /** | |
4f57fa8c | 875 | * Finds AVInputFormat based on the short name of the input format. |
3217cb42 | 876 | */ |
b9a281db | 877 | AVInputFormat *av_find_input_format(const char *short_name); |
3217cb42 PI |
878 | |
879 | /** | |
d1b9adf2 | 880 | * Guesses the file format. |
3217cb42 | 881 | * |
4f57fa8c DB |
882 | * @param is_opened Whether the file is already opened; determines whether |
883 | * demuxers with or without AVFMT_NOFILE are probed. | |
3217cb42 | 884 | */ |
94988531 | 885 | AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened); |
3217cb42 PI |
886 | |
887 | /** | |
888 | * Allocates all the structures needed to read an input stream. | |
889 | * This does not open the needed codecs for decoding the stream[s]. | |
890 | */ | |
115329f1 DB |
891 | int av_open_input_stream(AVFormatContext **ic_ptr, |
892 | ByteIOContext *pb, const char *filename, | |
da24c5e3 | 893 | AVInputFormat *fmt, AVFormatParameters *ap); |
3217cb42 PI |
894 | |
895 | /** | |
d1b9adf2 | 896 | * Opens a media file as input. The codecs are not opened. Only the file |
3217cb42 PI |
897 | * header (if present) is read. |
898 | * | |
4f57fa8c DB |
899 | * @param ic_ptr The opened media file handle is put here. |
900 | * @param filename filename to open | |
901 | * @param fmt If non-NULL, force the file format to use. | |
3217cb42 | 902 | * @param buf_size optional buffer size (zero if default is OK) |
78cb7273 DB |
903 | * @param ap Additional parameters needed when opening the file |
904 | * (NULL if default). | |
4f57fa8c | 905 | * @return 0 if OK, AVERROR_xxx otherwise |
3217cb42 | 906 | */ |
115329f1 | 907 | int av_open_input_file(AVFormatContext **ic_ptr, const char *filename, |
b9a281db FB |
908 | AVInputFormat *fmt, |
909 | int buf_size, | |
910 | AVFormatParameters *ap); | |
88a28965 SS |
911 | |
912 | #if LIBAVFORMAT_VERSION_MAJOR < 53 | |
913 | /** | |
914 | * @deprecated Use avformat_alloc_context() instead. | |
915 | */ | |
916 | attribute_deprecated AVFormatContext *av_alloc_format_context(void); | |
917 | #endif | |
918 | ||
88808c60 | 919 | /** |
d1b9adf2 | 920 | * Allocates an AVFormatContext. |
5d81d641 | 921 | * Can be freed with av_free() but do not forget to free everything you |
88808c60 MN |
922 | * explicitly allocated as well! |
923 | */ | |
88a28965 | 924 | AVFormatContext *avformat_alloc_context(void); |
b9a281db | 925 | |
3217cb42 | 926 | /** |
d1b9adf2 | 927 | * Reads packets of a media file to get stream information. This |
3217cb42 | 928 | * is useful for file formats with no headers such as MPEG. This |
22e77e44 | 929 | * function also computes the real framerate in case of MPEG-2 repeat |
3217cb42 PI |
930 | * frame mode. |
931 | * The logical file position is not changed by this function; | |
932 | * examined packets may be buffered for later processing. | |
933 | * | |
934 | * @param ic media file handle | |
4f57fa8c DB |
935 | * @return >=0 if OK, AVERROR_xxx on error |
936 | * @todo Let the user decide somehow what information is needed so that | |
937 | * we do not waste time getting stuff the user does not need. | |
3217cb42 | 938 | */ |
b9a281db | 939 | int av_find_stream_info(AVFormatContext *ic); |
3217cb42 PI |
940 | |
941 | /** | |
d1b9adf2 | 942 | * Reads a transport packet from a media file. |
3217cb42 | 943 | * |
864ff8c1 | 944 | * This function is obsolete and should never be used. |
3217cb42 PI |
945 | * Use av_read_frame() instead. |
946 | * | |
947 | * @param s media file handle | |
948 | * @param pkt is filled | |
4f57fa8c | 949 | * @return 0 if OK, AVERROR_xxx on error |
3217cb42 | 950 | */ |
de6d9b64 | 951 | int av_read_packet(AVFormatContext *s, AVPacket *pkt); |
3217cb42 PI |
952 | |
953 | /** | |
d1b9adf2 | 954 | * Returns the next frame of a stream. |
3217cb42 PI |
955 | * |
956 | * The returned packet is valid | |
957 | * until the next av_read_frame() or until av_close_input_file() and | |
958 | * must be freed with av_free_packet. For video, the packet contains | |
959 | * exactly one frame. For audio, it contains an integer number of | |
960 | * frames if each frame has a known fixed size (e.g. PCM or ADPCM | |
961 | * data). If the audio frames have a variable size (e.g. MPEG audio), | |
962 | * then it contains one frame. | |
963 | * | |
964 | * pkt->pts, pkt->dts and pkt->duration are always set to correct | |
22e77e44 | 965 | * values in AVStream.time_base units (and guessed if the format cannot |
4f57fa8c DB |
966 | * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format |
967 | * has B-frames, so it is better to rely on pkt->dts if you do not | |
3217cb42 PI |
968 | * decompress the payload. |
969 | * | |
4f57fa8c | 970 | * @return 0 if OK, < 0 on error or end of file |
3217cb42 | 971 | */ |
fb2758c8 | 972 | int av_read_frame(AVFormatContext *s, AVPacket *pkt); |
3217cb42 PI |
973 | |
974 | /** | |
d1b9adf2 | 975 | * Seeks to the keyframe at timestamp. |
3217cb42 PI |
976 | * 'timestamp' in 'stream_index'. |
977 | * @param stream_index If stream_index is (-1), a default | |
978 | * stream is selected, and timestamp is automatically converted | |
979 | * from AV_TIME_BASE units to the stream specific time_base. | |
4f57fa8c DB |
980 | * @param timestamp Timestamp in AVStream.time_base units |
981 | * or, if no stream is specified, in AV_TIME_BASE units. | |
3217cb42 PI |
982 | * @param flags flags which select direction and seeking mode |
983 | * @return >= 0 on success | |
984 | */ | |
78cb7273 DB |
985 | int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, |
986 | int flags); | |
3217cb42 PI |
987 | |
988 | /** | |
d1b9adf2 | 989 | * Seeks to timestamp ts. |
d04768fa MN |
990 | * Seeking will be done so that the point from which all active streams |
991 | * can be presented successfully will be closest to ts and within min/max_ts. | |
992 | * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. | |
993 | * | |
22e77e44 | 994 | * If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in bytes and |
d04768fa | 995 | * are the file position (this may not be supported by all demuxers). |
22e77e44 | 996 | * If flags contain AVSEEK_FLAG_FRAME, then all timestamps are in frames |
d04768fa | 997 | * in the stream with stream_index (this may not be supported by all demuxers). |
22e77e44 DB |
998 | * Otherwise all timestamps are in units of the stream selected by stream_index |
999 | * or if stream_index is -1, in AV_TIME_BASE units. | |
1000 | * If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as | |
d04768fa MN |
1001 | * keyframes (this may not be supported by all demuxers). |
1002 | * | |
22e77e44 | 1003 | * @param stream_index index of the stream which is used as time base reference |
d04768fa MN |
1004 | * @param min_ts smallest acceptable timestamp |
1005 | * @param ts target timestamp | |
1006 | * @param max_ts largest acceptable timestamp | |
1007 | * @param flags flags | |
32e543f8 | 1008 | * @return >=0 on success, error code otherwise |
998b6f7c | 1009 | * |
22e77e44 DB |
1010 | * @NOTE This is part of the new seek API which is still under construction. |
1011 | * Thus do not use this yet. It may change at any time, do not expect | |
1012 | * ABI compatibility yet! | |
d04768fa MN |
1013 | */ |
1014 | int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); | |
1015 | ||
1016 | /** | |
d1b9adf2 | 1017 | * Starts playing a network-based stream (e.g. RTSP stream) at the |
4f57fa8c | 1018 | * current position. |
3217cb42 | 1019 | */ |
fb2758c8 | 1020 | int av_read_play(AVFormatContext *s); |
3217cb42 PI |
1021 | |
1022 | /** | |
d1b9adf2 | 1023 | * Pauses a network-based stream (e.g. RTSP stream). |
3217cb42 PI |
1024 | * |
1025 | * Use av_read_play() to resume it. | |
1026 | */ | |
fb2758c8 | 1027 | int av_read_pause(AVFormatContext *s); |
3217cb42 PI |
1028 | |
1029 | /** | |
d1b9adf2 | 1030 | * Frees a AVFormatContext allocated by av_open_input_stream. |
2506fd54 RD |
1031 | * @param s context to free |
1032 | */ | |
1033 | void av_close_input_stream(AVFormatContext *s); | |
1034 | ||
1035 | /** | |
d1b9adf2 | 1036 | * Closes a media file (but not its codecs). |
3217cb42 PI |
1037 | * |
1038 | * @param s media file handle | |
1039 | */ | |
de6d9b64 | 1040 | void av_close_input_file(AVFormatContext *s); |
3217cb42 PI |
1041 | |
1042 | /** | |
d1b9adf2 | 1043 | * Adds a new stream to a media file. |
3217cb42 PI |
1044 | * |
1045 | * Can only be called in the read_header() function. If the flag | |
1046 | * AVFMTCTX_NOHEADER is in the format context, then new streams | |
1047 | * can be added in read_packet too. | |
1048 | * | |
1049 | * @param s media file handle | |
4f57fa8c | 1050 | * @param id file-format-dependent stream ID |
3217cb42 | 1051 | */ |
b9a281db | 1052 | AVStream *av_new_stream(AVFormatContext *s, int id); |
15afa396 | 1053 | AVProgram *av_new_program(AVFormatContext *s, int id); |
3217cb42 PI |
1054 | |
1055 | /** | |
d1b9adf2 | 1056 | * Adds a new chapter. |
79d7836a | 1057 | * This function is NOT part of the public API |
4f57fa8c | 1058 | * and should ONLY be used by demuxers. |
79d7836a AK |
1059 | * |
1060 | * @param s media file handle | |
4f57fa8c | 1061 | * @param id unique ID for this chapter |
abd2256d MN |
1062 | * @param start chapter start time in time_base units |
1063 | * @param end chapter end time in time_base units | |
79d7836a | 1064 | * @param title chapter title |
5c37f43a | 1065 | * |
4f57fa8c | 1066 | * @return AVChapter or NULL on error |
79d7836a | 1067 | */ |
78cb7273 DB |
1068 | AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, |
1069 | int64_t start, int64_t end, const char *title); | |
79d7836a AK |
1070 | |
1071 | /** | |
d1b9adf2 | 1072 | * Sets the pts for a given stream. |
3217cb42 PI |
1073 | * |
1074 | * @param s stream | |
1075 | * @param pts_wrap_bits number of bits effectively used by the pts | |
1076 | * (used for wrap control, 33 is the value for MPEG) | |
1077 | * @param pts_num numerator to convert to seconds (MPEG: 1) | |
1078 | * @param pts_den denominator to convert to seconds (MPEG: 90000) | |
1079 | */ | |
9ee91c2f | 1080 | void av_set_pts_info(AVStream *s, int pts_wrap_bits, |
dec14949 | 1081 | unsigned int pts_num, unsigned int pts_den); |
de6d9b64 | 1082 | |
3ba1438d MN |
1083 | #define AVSEEK_FLAG_BACKWARD 1 ///< seek backward |
1084 | #define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes | |
4f57fa8c | 1085 | #define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non-keyframes |
2bf74f49 | 1086 | #define AVSEEK_FLAG_FRAME 8 ///< seeking based on frame number |
3ba1438d | 1087 | |
b754978a | 1088 | int av_find_default_stream_index(AVFormatContext *s); |
3217cb42 PI |
1089 | |
1090 | /** | |
1091 | * Gets the index for a specific timestamp. | |
4f57fa8c DB |
1092 | * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond |
1093 | * to the timestamp which is <= the requested one, if backward | |
1094 | * is 0, then it will be >= | |
3217cb42 PI |
1095 | * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise |
1096 | * @return < 0 if no such timestamp could be found | |
1097 | */ | |
dc56fc38 | 1098 | int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags); |
3217cb42 PI |
1099 | |
1100 | /** | |
3dea63bd | 1101 | * Ensures the index uses less memory than the maximum specified in |
22e77e44 | 1102 | * AVFormatContext.max_index_size by discarding entries if it grows |
3dea63bd PK |
1103 | * too large. |
1104 | * This function is not part of the public API and should only be called | |
1105 | * by demuxers. | |
1106 | */ | |
1107 | void ff_reduce_index(AVFormatContext *s, int stream_index); | |
1108 | ||
1109 | /** | |
d1b9adf2 | 1110 | * Adds an index entry into a sorted list. Updates the entry if the list |
4f57fa8c | 1111 | * already contains it. |
3217cb42 | 1112 | * |
4f57fa8c | 1113 | * @param timestamp timestamp in the time base of the given stream |
3217cb42 | 1114 | */ |
78cb7273 DB |
1115 | int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, |
1116 | int size, int distance, int flags); | |
3217cb42 PI |
1117 | |
1118 | /** | |
78cb7273 DB |
1119 | * Does a binary search using av_index_search_timestamp() and |
1120 | * AVCodec.read_timestamp(). | |
1121 | * This is not supposed to be called directly by a user application, | |
1122 | * but by demuxers. | |
3217cb42 PI |
1123 | * @param target_ts target timestamp in the time base of the given stream |
1124 | * @param stream_index stream number | |
1125 | */ | |
78cb7273 DB |
1126 | int av_seek_frame_binary(AVFormatContext *s, int stream_index, |
1127 | int64_t target_ts, int flags); | |
3217cb42 PI |
1128 | |
1129 | /** | |
4f57fa8c | 1130 | * Updates cur_dts of all streams based on the given timestamp and AVStream. |
3217cb42 | 1131 | * |
4f57fa8c DB |
1132 | * Stream ref_st unchanged, others set cur_dts in their native time base. |
1133 | * Only needed for timestamp wrapping or if (dts not set and pts!=dts). | |
3217cb42 PI |
1134 | * @param timestamp new dts expressed in time_base of param ref_st |
1135 | * @param ref_st reference stream giving time_base of param timestamp | |
1136 | */ | |
22ffac70 | 1137 | void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp); |
3217cb42 PI |
1138 | |
1139 | /** | |
1140 | * Does a binary search using read_timestamp(). | |
78cb7273 DB |
1141 | * This is not supposed to be called directly by a user application, |
1142 | * but by demuxers. | |
3217cb42 PI |
1143 | * @param target_ts target timestamp in the time base of the given stream |
1144 | * @param stream_index stream number | |
1145 | */ | |
78cb7273 DB |
1146 | int64_t av_gen_search(AVFormatContext *s, int stream_index, |
1147 | int64_t target_ts, int64_t pos_min, | |
1148 | int64_t pos_max, int64_t pos_limit, | |
1149 | int64_t ts_min, int64_t ts_max, | |
1150 | int flags, int64_t *ts_ret, | |
1151 | int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )); | |
b754978a | 1152 | |
43d414ba | 1153 | /** media file output */ |
290c5fa6 | 1154 | int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap); |
3217cb42 PI |
1155 | |
1156 | /** | |
d1b9adf2 | 1157 | * Allocates the stream private data and writes the stream header to an |
755bfeab | 1158 | * output media file. |
3217cb42 PI |
1159 | * |
1160 | * @param s media file handle | |
4f57fa8c | 1161 | * @return 0 if OK, AVERROR_xxx on error |
3217cb42 | 1162 | */ |
b9a281db | 1163 | int av_write_header(AVFormatContext *s); |
3217cb42 PI |
1164 | |
1165 | /** | |
d1b9adf2 | 1166 | * Writes a packet to an output media file. |
3217cb42 PI |
1167 | * |
1168 | * The packet shall contain one audio or video frame. | |
78cb7273 DB |
1169 | * The packet must be correctly interleaved according to the container |
1170 | * specification, if not then av_interleaved_write_frame must be used. | |
3217cb42 PI |
1171 | * |
1172 | * @param s media file handle | |
78cb7273 DB |
1173 | * @param pkt The packet, which contains the stream_index, buf/buf_size, |
1174 | dts/pts, ... | |
4f57fa8c | 1175 | * @return < 0 on error, = 0 if OK, 1 if end of stream wanted |
3217cb42 | 1176 | */ |
e928649b | 1177 | int av_write_frame(AVFormatContext *s, AVPacket *pkt); |
3217cb42 PI |
1178 | |
1179 | /** | |
1180 | * Writes a packet to an output media file ensuring correct interleaving. | |
1181 | * | |
1182 | * The packet must contain one audio or video frame. | |
22e77e44 | 1183 | * If the packets are already correctly interleaved, the application should |
90b5b51e DB |
1184 | * call av_write_frame() instead as it is slightly faster. It is also important |
1185 | * to keep in mind that completely non-interleaved input will need huge amounts | |
1186 | * of memory to interleave with this, so it is preferable to interleave at the | |
1187 | * demuxer level. | |
3217cb42 PI |
1188 | * |
1189 | * @param s media file handle | |
78cb7273 DB |
1190 | * @param pkt The packet, which contains the stream_index, buf/buf_size, |
1191 | dts/pts, ... | |
4f57fa8c | 1192 | * @return < 0 on error, = 0 if OK, 1 if end of stream wanted |
3217cb42 | 1193 | */ |
3c895fc0 | 1194 | int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt); |
3217cb42 PI |
1195 | |
1196 | /** | |
d1b9adf2 | 1197 | * Interleaves a packet per dts in an output media file. |
3217cb42 | 1198 | * |
78cb7273 | 1199 | * Packets with pkt->destruct == av_destruct_packet will be freed inside this |
22e77e44 | 1200 | * function, so they cannot be used after it. Note that calling av_free_packet() |
78cb7273 | 1201 | * on them is still safe. |
3217cb42 PI |
1202 | * |
1203 | * @param s media file handle | |
1204 | * @param out the interleaved packet will be output here | |
1205 | * @param in the input packet | |
1206 | * @param flush 1 if no further packets are available as input and all | |
1207 | * remaining packets should be output | |
1208 | * @return 1 if a packet was output, 0 if no packet could be output, | |
d9526386 | 1209 | * < 0 if an error occurred |
3217cb42 | 1210 | */ |
78cb7273 DB |
1211 | int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, |
1212 | AVPacket *pkt, int flush); | |
e928649b | 1213 | |
3217cb42 | 1214 | /** |
2b75bde6 SS |
1215 | * Writes the stream trailer to an output media file and frees the |
1216 | * file private data. | |
3217cb42 | 1217 | * |
dc76fe13 RD |
1218 | * May only be called after a successful call to av_write_header. |
1219 | * | |
3217cb42 | 1220 | * @param s media file handle |
4f57fa8c | 1221 | * @return 0 if OK, AVERROR_xxx on error |
3217cb42 | 1222 | */ |
b9a281db | 1223 | int av_write_trailer(AVFormatContext *s); |
de6d9b64 FB |
1224 | |
1225 | void dump_format(AVFormatContext *ic, | |
115329f1 | 1226 | int index, |
de6d9b64 FB |
1227 | const char *url, |
1228 | int is_output); | |
3217cb42 | 1229 | |
1ca9133f | 1230 | #if LIBAVFORMAT_VERSION_MAJOR < 53 |
3217cb42 | 1231 | /** |
4f57fa8c | 1232 | * Parses width and height out of string str. |
26ef3220 | 1233 | * @deprecated Use av_parse_video_frame_size instead. |
3217cb42 | 1234 | */ |
78cb7273 DB |
1235 | attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr, |
1236 | const char *str); | |
3217cb42 PI |
1237 | |
1238 | /** | |
22e77e44 | 1239 | * Converts framerate from a string to a fraction. |
26ef3220 | 1240 | * @deprecated Use av_parse_video_frame_rate instead. |
3217cb42 | 1241 | */ |
78cb7273 DB |
1242 | attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, |
1243 | const char *arg); | |
1ca9133f | 1244 | #endif |
3217cb42 PI |
1245 | |
1246 | /** | |
819174fa | 1247 | * Parses datestr and returns a corresponding number of microseconds. |
f9436161 SS |
1248 | * @param datestr String representing a date or a duration. |
1249 | * - If a date the syntax is: | |
3217cb42 | 1250 | * @code |
3217cb42 | 1251 | * [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]} |
3217cb42 | 1252 | * @endcode |
4f57fa8c | 1253 | * Time is local time unless Z is appended, in which case it is |
f9436161 | 1254 | * interpreted as UTC. |
4f57fa8c | 1255 | * If the year-month-day part is not specified it takes the current |
f9436161 SS |
1256 | * year-month-day. |
1257 | * Returns the number of microseconds since 1st of January, 1970 up to | |
819174fa | 1258 | * the time of the parsed date or INT64_MIN if datestr cannot be |
f9436161 SS |
1259 | * successfully parsed. |
1260 | * - If a duration the syntax is: | |
1261 | * @code | |
1262 | * [-]HH[:MM[:SS[.m...]]] | |
1263 | * [-]S+[.m...] | |
1264 | * @endcode | |
1265 | * Returns the number of microseconds contained in a time interval | |
819174fa | 1266 | * with the specified duration or INT64_MIN if datestr cannot be |
7338d368 | 1267 | * successfully parsed. |
819174fa SS |
1268 | * @param duration Flag which tells how to interpret datestr, if |
1269 | * not zero datestr is interpreted as a duration, otherwise as a | |
f9436161 | 1270 | * date. |
3217cb42 | 1271 | */ |
0c1a9eda | 1272 | int64_t parse_date(const char *datestr, int duration); |
de6d9b64 | 1273 | |
fff5e687 | 1274 | /** Gets the current time in microseconds. */ |
0c1a9eda | 1275 | int64_t av_gettime(void); |
94988531 | 1276 | |
4f57fa8c | 1277 | /* ffm-specific for ffserver */ |
de6d9b64 | 1278 | #define FFM_PACKET_SIZE 4096 |
bc5c918e | 1279 | int64_t ffm_read_write_index(int fd); |
6fcce4f9 | 1280 | int ffm_write_write_index(int fd, int64_t pos); |
bc5c918e | 1281 | void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size); |
de6d9b64 | 1282 | |
3217cb42 PI |
1283 | /** |
1284 | * Attempts to find a specific tag in a URL. | |
1285 | * | |
1286 | * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. | |
1287 | * Return 1 if found. | |
1288 | */ | |
de6d9b64 FB |
1289 | int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info); |
1290 | ||
3217cb42 | 1291 | /** |
22e77e44 | 1292 | * Returns in 'buf' the path with '%d' replaced by a number. |
4f57fa8c | 1293 | * |
3217cb42 PI |
1294 | * Also handles the '%0nd' format where 'n' is the total number |
1295 | * of digits and '%%'. | |
1296 | * | |
1297 | * @param buf destination buffer | |
1298 | * @param buf_size destination buffer size | |
1299 | * @param path numbered sequence string | |
8ea0e802 | 1300 | * @param number frame number |
4f57fa8c | 1301 | * @return 0 if OK, -1 on format error |
3217cb42 | 1302 | */ |
5c07cf53 MB |
1303 | int av_get_frame_filename(char *buf, int buf_size, |
1304 | const char *path, int number); | |
3217cb42 PI |
1305 | |
1306 | /** | |
d1b9adf2 | 1307 | * Checks whether filename actually is a numbered sequence generator. |
3217cb42 PI |
1308 | * |
1309 | * @param filename possible numbered sequence string | |
4f57fa8c | 1310 | * @return 1 if a valid numbered sequence string, 0 otherwise |
3217cb42 | 1311 | */ |
5c07cf53 | 1312 | int av_filename_number_test(const char *filename); |
96baaa6a | 1313 | |
c5388c07 | 1314 | /** |
d1b9adf2 | 1315 | * Generates an SDP for an RTP session. |
c5388c07 LA |
1316 | * |
1317 | * @param ac array of AVFormatContexts describing the RTP streams. If the | |
1318 | * array is composed by only one context, such context can contain | |
1319 | * multiple AVStreams (one AVStream per RTP stream). Otherwise, | |
1320 | * all the contexts in the array (an AVCodecContext per RTP stream) | |
4f57fa8c | 1321 | * must contain only one AVStream. |
8767b80f LA |
1322 | * @param n_files number of AVCodecContexts contained in ac |
1323 | * @param buff buffer where the SDP will be stored (must be allocated by | |
4f57fa8c | 1324 | * the caller) |
8767b80f | 1325 | * @param size the size of the buffer |
4f57fa8c | 1326 | * @return 0 if OK, AVERROR_xxx on error |
c5388c07 | 1327 | */ |
8767b80f | 1328 | int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size); |
c5388c07 | 1329 | |
fb025625 | 1330 | #ifdef HAVE_AV_CONFIG_H |
f71869a4 | 1331 | |
2db5da97 | 1332 | void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem); |
39f472c3 | 1333 | |
e4e70d2e | 1334 | #ifdef __GNUC__ |
39f472c3 FB |
1335 | #define dynarray_add(tab, nb_ptr, elem)\ |
1336 | do {\ | |
72ab9d7f DP |
1337 | __typeof__(tab) _tab = (tab);\ |
1338 | __typeof__(elem) _elem = (elem);\ | |
39f472c3 | 1339 | (void)sizeof(**_tab == _elem); /* check that types are compatible */\ |
2db5da97 | 1340 | ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\ |
39f472c3 | 1341 | } while(0) |
e4e70d2e FH |
1342 | #else |
1343 | #define dynarray_add(tab, nb_ptr, elem)\ | |
1344 | do {\ | |
2db5da97 | 1345 | ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\ |
e4e70d2e FH |
1346 | } while(0) |
1347 | #endif | |
39f472c3 | 1348 | |
f71869a4 | 1349 | time_t mktimegm(struct tm *tm); |
0c9fc6e1 | 1350 | struct tm *brktimegm(time_t secs, struct tm *tm); |
115329f1 | 1351 | const char *small_strptime(const char *p, const char *fmt, |
f71869a4 FB |
1352 | struct tm *dt); |
1353 | ||
002a6d0e | 1354 | /** |
a3303178 SS |
1355 | * Returns a positive value if the given filename has one of the given |
1356 | * extensions, 0 otherwise. | |
1357 | * | |
1358 | * @param extensions a comma-separated list of filename extensions | |
1359 | */ | |
8eb631fa | 1360 | int av_match_ext(const char *filename, const char *extensions); |
a941f391 | 1361 | |
fb025625 FB |
1362 | #endif /* HAVE_AV_CONFIG_H */ |
1363 | ||
98790382 | 1364 | #endif /* AVFORMAT_AVFORMAT_H */ |