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#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 */ 43static 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 */ 65static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb) 66{ 67 if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); 68 else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts); 69 return buf; 70} 71 72/** 73 * Convenience macro, the return value should be used only directly in 74 * function arguments but never stand-alone. 75 */ 76#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb) 77 78#endif /* AVUTIL_TIMESTAMP_H */ 79