mirror of
https://github.com/xiaoyifang/goldendict-ng.git
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79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* timestamp utils, mostly useful for debugging/logging purposes
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*/
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#ifndef AVUTIL_TIMESTAMP_H
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#define AVUTIL_TIMESTAMP_H
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#include "common.h"
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#if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64)
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#error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS
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#endif
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#define AV_TS_MAX_STRING_SIZE 32
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/**
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* Fill the provided buffer with a string containing a timestamp
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* representation.
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*
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* @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
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* @param ts the timestamp to represent
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* @return the buffer in input
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*/
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static inline char *av_ts_make_string(char *buf, int64_t ts)
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{
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if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
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else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%" PRId64, ts);
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return buf;
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}
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/**
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* Convenience macro, the return value should be used only directly in
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* function arguments but never stand-alone.
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*/
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#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)
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/**
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* Fill the provided buffer with a string containing a timestamp time
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* representation.
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*
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* @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
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* @param ts the timestamp to represent
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* @param tb the timebase of the timestamp
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* @return the buffer in input
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*/
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static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
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{
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if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
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else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
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return buf;
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}
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/**
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* Convenience macro, the return value should be used only directly in
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* function arguments but never stand-alone.
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*/
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#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)
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#endif /* AVUTIL_TIMESTAMP_H */
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