timestamp.h (2726B)
1 /* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 /** 20 * @file 21 * timestamp utils, mostly useful for debugging/logging purposes 22 */ 23 24 #ifndef AVUTIL_TIMESTAMP_H 25 #define AVUTIL_TIMESTAMP_H 26 27 #include "avutil.h" 28 29 #if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64) 30 #error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS 31 #endif 32 33 #define AV_TS_MAX_STRING_SIZE 32 34 35 /** 36 * Fill the provided buffer with a string containing a timestamp 37 * representation. 38 * 39 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE 40 * @param ts the timestamp to represent 41 * @return the buffer in input 42 */ 43 static inline char *av_ts_make_string(char *buf, int64_t ts) 44 { 45 if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); 46 else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%" PRId64, ts); 47 return buf; 48 } 49 50 /** 51 * Convenience macro, the return value should be used only directly in 52 * function arguments but never stand-alone. 53 */ 54 #define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts) 55 56 /** 57 * Fill the provided buffer with a string containing a timestamp time 58 * representation. 59 * 60 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE 61 * @param ts the timestamp to represent 62 * @param tb the timebase of the timestamp 63 * @return the buffer in input 64 */ 65 char *av_ts_make_time_string2(char *buf, int64_t ts, AVRational tb); 66 67 /** 68 * Fill the provided buffer with a string containing a timestamp 69 * representation. 70 * 71 * @see av_ts_make_time_string2 72 */ 73 static inline char *av_ts_make_time_string(char *buf, int64_t ts, 74 const AVRational *tb) 75 { 76 return av_ts_make_time_string2(buf, ts, *tb); 77 } 78 79 /** 80 * Convenience macro, the return value should be used only directly in 81 * function arguments but never stand-alone. 82 */ 83 #define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb) 84 85 #endif /* AVUTIL_TIMESTAMP_H */