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# gavltime.h

    00001 /*****************************************************************
    00002  * gavl - a general purpose audio/video processing library
    00003  *
    00004  * Copyright (c) 2001 - 2011 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 GAVLTIME_H_INCLUDED
    00023 #define GAVLTIME_H_INCLUDED
    00024
    00025 #ifdef __cplusplus
    00026 extern "C" {
    00027 #endif
    00028
    00029 #include <inttypes.h>
    00030 #include <gavl/gavldefs.h>
    00031
    00038 #define GAVL_TIME_SCALE     1000000
    00043 #define GAVL_TIME_UNDEFINED 0x8000000000000000LL
    00046 #define GAVL_TIME_MAX       0x7fffffffffffffffLL
    00053 typedef int64_t gavl_time_t;
    00054
    00055 /* Utility functions */
    00056
    00061 GAVL_PUBLIC
    00062 gavl_time_t gavl_samples_to_time(int samplerate, int64_t samples);
    00063
    00071 GAVL_PUBLIC
    00072 int64_t gavl_time_to_samples(int samplerate, gavl_time_t time);
    00073
    00078 GAVL_PUBLIC
    00079 gavl_time_t gavl_frames_to_time(int rate_num, int rate_den, int64_t frames);
    00080
    00081
    00090 GAVL_PUBLIC
    00091 int64_t gavl_time_to_frames(int rate_num, int rate_den, gavl_time_t time);
    00092
    00100 GAVL_PUBLIC
    00101 int64_t gavl_time_scale(int scale, gavl_time_t time);
    00102
    00110 GAVL_PUBLIC
    00111 gavl_time_t gavl_time_unscale(int scale, int64_t time);
    00112
    00121 GAVL_PUBLIC
    00122 int64_t gavl_time_rescale(int scale1, int scale2, int64_t time);
    00123
    00130 #define gavl_seconds_to_time(s) (gavl_time_t)((s)*(double)(GAVL_TIME_SCALE))
    00131
    00138 #define gavl_time_to_seconds(t) ((double)(t)/(double)(GAVL_TIME_SCALE))
    00139
    00145 GAVL_PUBLIC
    00146 void gavl_time_delay(gavl_time_t * time);
    00147
    00152 #define GAVL_TIME_STRING_LEN 11
    00153
    00163 GAVL_PUBLIC void
    00164 gavl_time_prettyprint(gavl_time_t time, char str[GAVL_TIME_STRING_LEN]);
    00165
    00170 #define GAVL_TIME_STRING_LEN_MS 15
    00171
    00183 GAVL_PUBLIC void
    00184 gavl_time_prettyprint_ms(gavl_time_t time, char str[GAVL_TIME_STRING_LEN_MS]);
    00185
    00186
    00187 /* Scan time: format is hhh:mm:ss with hh: hours, mm: minutes, ss: seconds. Seconds can be a fractional
    00188    value (i.e. with decimal point) */
    00189
    00190 GAVL_PUBLIC
    00191 int gavl_time_parse(const char * str, gavl_time_t * ret);
    00192
    00193
    00194 /* Simple software timer */
    00195
    00210 typedef struct gavl_timer_s gavl_timer_t;
    00211
    00217 GAVL_PUBLIC
    00218 gavl_timer_t * gavl_timer_create();
    00219
    00227 GAVL_PUBLIC
    00228 void gavl_timer_destroy(gavl_timer_t * timer);
    00229
    00235 GAVL_PUBLIC
    00236 void gavl_timer_start(gavl_timer_t * timer);
    00237
    00243 GAVL_PUBLIC
    00244 void gavl_timer_stop(gavl_timer_t * timer);
    00245
    00252 GAVL_PUBLIC
    00253 gavl_time_t gavl_timer_get(gavl_timer_t * timer);
    00254
    00261 GAVL_PUBLIC
    00262 void gavl_timer_set(gavl_timer_t * timer, gavl_time_t t);
    00263
    00275 GAVL_PUBLIC
    00276 uint64_t gavl_benchmark_get_time(int flags);
    00277
    00285 GAVL_PUBLIC
    00286 const char * gavl_benchmark_get_desc(int flags);
    00287
    00288
    00289 #ifdef __cplusplus
    00290 }
    00291 #endif
    00292
    00293 #endif /* GAVLTIME_H_INCLUDED */
    00294