• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • Examples
  • File List
  • Globals

libavformat/internal.h

Go to the documentation of this file.
00001 /*
00002  * copyright (c) 2001 Fabrice Bellard
00003  *
00004  * This file is part of Libav.
00005  *
00006  * Libav is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * Libav is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with Libav; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #ifndef AVFORMAT_INTERNAL_H
00022 #define AVFORMAT_INTERNAL_H
00023 
00024 #include <stdint.h>
00025 #include "avformat.h"
00026 
00027 #define MAX_URL_SIZE 4096
00028 
00029 #ifdef DEBUG
00030 #    define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size)
00031 #else
00032 #    define hex_dump_debug(class, buf, size)
00033 #endif
00034 
00035 typedef struct AVCodecTag {
00036     enum CodecID id;
00037     unsigned int tag;
00038 } AVCodecTag;
00039 
00040 void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
00041 
00042 #ifdef __GNUC__
00043 #define dynarray_add(tab, nb_ptr, elem)\
00044 do {\
00045     __typeof__(tab) _tab = (tab);\
00046     __typeof__(elem) _elem = (elem);\
00047     (void)sizeof(**_tab == _elem); /* check that types are compatible */\
00048     ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\
00049 } while(0)
00050 #else
00051 #define dynarray_add(tab, nb_ptr, elem)\
00052 do {\
00053     ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\
00054 } while(0)
00055 #endif
00056 
00057 struct tm *brktimegm(time_t secs, struct tm *tm);
00058 
00059 char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
00060 
00069 int ff_hex_to_data(uint8_t *data, const char *p);
00070 
00071 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx);
00072 
00077 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
00078                               int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
00079 
00080 void ff_read_frame_flush(AVFormatContext *s);
00081 
00082 #define NTP_OFFSET 2208988800ULL
00083 #define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
00084 
00086 uint64_t ff_ntp_time(void);
00087 
00109 int ff_url_join(char *str, int size, const char *proto,
00110                 const char *authorization, const char *hostname,
00111                 int port, const char *fmt, ...) av_printf_format(7, 8);
00112 
00130 void ff_sdp_write_media(char *buff, int size, AVCodecContext *c,
00131                         const char *dest_addr, const char *dest_type,
00132                         int port, int ttl, AVFormatContext *fmt);
00133 
00145 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
00146                      AVFormatContext *src);
00147 
00151 int ff_get_v_length(uint64_t val);
00152 
00156 void ff_put_v(AVIOContext *bc, uint64_t val);
00157 
00169 int ff_get_line(AVIOContext *s, char *buf, int maxlen);
00170 
00171 #define SPACE_CHARS " \t\r\n"
00172 
00183 typedef void (*ff_parse_key_val_cb)(void *context, const char *key,
00184                                     int key_len, char **dest, int *dest_len);
00194 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
00195                         void *context);
00196 
00201 int ff_find_stream_index(AVFormatContext *s, int id);
00202 
00206 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
00207                               int64_t wanted_timestamp, int flags);
00208 
00212 int ff_add_index_entry(AVIndexEntry **index_entries,
00213                        int *nb_index_entries,
00214                        unsigned int *index_entries_allocated_size,
00215                        int64_t pos, int64_t timestamp, int size, int distance, int flags);
00216 
00228 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
00229                               int64_t start, int64_t end, const char *title);
00230 
00236 void ff_reduce_index(AVFormatContext *s, int stream_index);
00237 
00238 /*
00239  * Convert a relative url into an absolute url, given a base url.
00240  *
00241  * @param buf the buffer where output absolute url is written
00242  * @param size the size of buf
00243  * @param base the base url, may be equal to buf.
00244  * @param rel the new url, which is interpreted relative to base
00245  */
00246 void ff_make_absolute_url(char *buf, int size, const char *base,
00247                           const char *rel);
00248 
00249 enum CodecID ff_guess_image2_codec(const char *filename);
00250 
00254 int64_t ff_iso8601_to_unix_time(const char *datestr);
00255 
00263 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
00264                          int64_t target_ts, int flags);
00265 
00274 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
00275 
00282 int64_t ff_gen_search(AVFormatContext *s, int stream_index,
00283                       int64_t target_ts, int64_t pos_min,
00284                       int64_t pos_max, int64_t pos_limit,
00285                       int64_t ts_min, int64_t ts_max,
00286                       int flags, int64_t *ts_ret,
00287                       int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
00288 
00299 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
00300                          unsigned int pts_num, unsigned int pts_den);
00301 
00306 int ff_add_param_change(AVPacket *pkt, int32_t channels,
00307                         uint64_t channel_layout, int32_t sample_rate,
00308                         int32_t width, int32_t height);
00309 
00310 #endif /* AVFORMAT_INTERNAL_H */
Generated on Thu Jul 11 2013 15:38:20 for Libav by doxygen 1.7.1