timecode.h

00001 /*****************************************************************
00002  * gavl - a general purpose audio/video processing library
00003  *
00004  * Copyright (c) 2001 - 2008 Members of the Gmerlin project
00005  * gmerlin-general@lists.sourceforge.net
00006  * http://gmerlin.sourceforge.net
00007  *
00008  * This program is free software: you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation, either version 2 of the License, or
00011  * (at your option) any later version.
00012  *
00013  * This program is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00020  * *****************************************************************/
00021  
00022 #ifndef TIMECODE_H_INCLUDED
00023 #define TIMECODE_H_INCLUDED
00024 
00025 #ifdef __cplusplus
00026 extern "C" {
00027 #endif
00028 
00029 #pragma GCC visibility push(default)
00030 
00031   
00044 typedef uint64_t gavl_timecode_t; 
00045 
00046 #define GAVL_TIMECODE_SIGN_MASK     (0x1LL<<62) 
00047 #define GAVL_TIMECODE_INVALID_MASK  (0x1LL<<63) 
00048 
00049 #define GAVL_TIMECODE_DROP_FRAME (1<<0) 
00050 
00051 #define GAVL_TIMECODE_UNDEFINED GAVL_TIMECODE_INVALID_MASK 
00052   
00053 
00060 typedef struct
00061   {
00062   int int_framerate; 
00063   int flags;         
00064   } gavl_timecode_format_t;
00065   
00074 void gavl_timecode_to_hmsf(gavl_timecode_t tc,
00075                            int * hours,
00076                            int * minutes,
00077                            int * seconds,
00078                            int * frames);
00079 
00087 void gavl_timecode_to_ymd(gavl_timecode_t tc,
00088                           int * year,
00089                           int * month,
00090                           int * day);
00091 
00100 void gavl_timecode_from_hmsf(gavl_timecode_t * tc,
00101                             int hours,
00102                             int minutes,
00103                             int seconds,
00104                             int frames);
00105 
00113 void gavl_timecode_from_ymd(gavl_timecode_t * tc,
00114                             int year,
00115                             int month,
00116                             int day);
00117 
00128 int64_t gavl_timecode_to_framecount(const gavl_timecode_format_t * tf,
00129                                     gavl_timecode_t tc);
00130 
00141 gavl_timecode_t gavl_timecode_from_framecount(const gavl_timecode_format_t * tf,
00142                                               int64_t fc);
00143 
00151 void gavl_timecode_dump(const gavl_timecode_format_t * tf,
00152                         gavl_timecode_t tc);
00153   
00154 
00155 /* -YYYY-MM-DD-HH:MM:SS.FFFF */
00156 
00157 #define GAVL_TIMECODE_STRING_LEN 26 
00161 void gavl_timecode_prettyprint(const gavl_timecode_format_t * tf,
00162                                gavl_timecode_t tc,
00163                                char str[GAVL_TIMECODE_STRING_LEN]);
00164  
00165 
00166   
00167 /*
00168  * @}
00169  */
00170 
00171 #pragma GCC visibility pop
00172   
00173 #ifdef __cplusplus
00174 }
00175 #endif
00176 
00177 #endif /* TIMECODE_H_INCLUDED */
00178 

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