FFmpeg  1.2.4
internal.h
Go to the documentation of this file.
1 /*
2  * copyright (c) 2001 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
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
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVFORMAT_INTERNAL_H
22 #define AVFORMAT_INTERNAL_H
23 
24 #include <stdint.h>
25 #include "avformat.h"
26 
27 #define MAX_URL_SIZE 4096
28 
29 #ifdef DEBUG
30 # define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size)
31 #else
32 # define hex_dump_debug(class, buf, size)
33 #endif
34 
35 typedef struct AVCodecTag {
36  enum AVCodecID id;
37  unsigned int tag;
38 } AVCodecTag;
39 
40 typedef struct CodecMime{
41  char str[32];
42  enum AVCodecID id;
43 } CodecMime;
44 
45 #ifdef __GNUC__
46 #define dynarray_add(tab, nb_ptr, elem)\
47 do {\
48  __typeof__(tab) _tab = (tab);\
49  __typeof__(elem) _elem = (elem);\
50  (void)sizeof(**_tab == _elem); /* check that types are compatible */\
51  av_dynarray_add(_tab, nb_ptr, _elem);\
52 } while(0)
53 #else
54 #define dynarray_add(tab, nb_ptr, elem)\
55 do {\
56  av_dynarray_add((tab), nb_ptr, (elem));\
57 } while(0)
58 #endif
59 
60 struct tm *ff_brktimegm(time_t secs, struct tm *tm);
61 
62 char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
63 
72 int ff_hex_to_data(uint8_t *data, const char *p);
73 
74 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx);
75 
82  int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
83 
85 
86 #define NTP_OFFSET 2208988800ULL
87 #define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
88 
90 uint64_t ff_ntp_time(void);
91 
113 int ff_url_join(char *str, int size, const char *proto,
114  const char *authorization, const char *hostname,
115  int port, const char *fmt, ...) av_printf_format(7, 8);
116 
135 void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
136  const char *dest_addr, const char *dest_type,
137  int port, int ttl, AVFormatContext *fmt);
138 
150 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
151  AVFormatContext *src);
152 
156 int ff_get_v_length(uint64_t val);
157 
161 void ff_put_v(AVIOContext *bc, uint64_t val);
162 
174 int ff_get_line(AVIOContext *s, char *buf, int maxlen);
175 
176 #define SPACE_CHARS " \t\r\n"
177 
188 typedef void (*ff_parse_key_val_cb)(void *context, const char *key,
189  int key_len, char **dest, int *dest_len);
199 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
200  void *context);
201 
206 int ff_find_stream_index(AVFormatContext *s, int id);
207 
211 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
212  int64_t wanted_timestamp, int flags);
213 
217 int ff_add_index_entry(AVIndexEntry **index_entries,
218  int *nb_index_entries,
219  unsigned int *index_entries_allocated_size,
220  int64_t pos, int64_t timestamp, int size, int distance, int flags);
221 
234  int64_t start, int64_t end, const char *title);
235 
241 void ff_reduce_index(AVFormatContext *s, int stream_index);
242 
251 void ff_make_absolute_url(char *buf, int size, const char *base,
252  const char *rel);
253 
254 enum AVCodecID ff_guess_image2_codec(const char *filename);
255 
259 int64_t ff_iso8601_to_unix_time(const char *datestr);
260 
268 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
269  int64_t target_ts, int flags);
270 
279 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
280 
287 int64_t ff_gen_search(AVFormatContext *s, int stream_index,
288  int64_t target_ts, int64_t pos_min,
289  int64_t pos_max, int64_t pos_limit,
290  int64_t ts_min, int64_t ts_max,
291  int flags, int64_t *ts_ret,
292  int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
293 
306 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
307  unsigned int pts_num, unsigned int pts_den);
308 
313 int ff_add_param_change(AVPacket *pkt, int32_t channels,
314  uint64_t channel_layout, int32_t sample_rate,
316 
322 
331 
348  AVPacket *pkt, int flush);
349 
351 
355 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
356  AVCodecParserContext *pc, AVPacket *pkt);
357 
358 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux);
359 
360 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id);
361 
362 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);
363 
377 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags);
378 
386 AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precission);
387 
392 
393 int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
394 
395 #endif /* AVFORMAT_INTERNAL_H */