timestamp.h (2462B)
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 "common.h" 28 29 #define AV_TS_MAX_STRING_SIZE 32 30 31 /** 32 * Fill the provided buffer with a string containing a timestamp 33 * representation. 34 * 35 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE 36 * @param ts the timestamp to represent 37 * @return the buffer in input 38 */ 39 static inline char *av_ts_make_string(char *buf, int64_t ts) 40 { 41 if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); 42 else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64"", ts); 43 return buf; 44 } 45 46 /** 47 * Convenience macro, the return value should be used only directly in 48 * function arguments but never stand-alone. 49 */ 50 #define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts) 51 52 /** 53 * Fill the provided buffer with a string containing a timestamp time 54 * representation. 55 * 56 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE 57 * @param ts the timestamp to represent 58 * @param tb the timebase of the timestamp 59 * @return the buffer in input 60 */ 61 static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb) 62 { 63 if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); 64 else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts); 65 return buf; 66 } 67 68 /** 69 * Convenience macro, the return value should be used only directly in 70 * function arguments but never stand-alone. 71 */ 72 #define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb) 73 74 #endif /* AVUTIL_TIMESTAMP_H */