/*
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
  * @file
  * timestamp utils, mostly useful for debugging/logging purposes
  */
 
 #ifndef AVUTIL_TIMESTAMP_H
 #define AVUTIL_TIMESTAMP_H
 
 #include "common.h"
 

 #if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64)
 #error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS
 #endif
 

 #define AV_TS_MAX_STRING_SIZE 32
 
 /**
  * Fill the provided buffer with a string containing a timestamp
  * representation.
  *
  * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
  * @param ts the timestamp to represent
  * @return the buffer in input
  */
 static inline char *av_ts_make_string(char *buf, int64_t ts)
 {
     if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");

     else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64, ts);

     return buf;
 }
 
 /**
  * Convenience macro, the return value should be used only directly in
  * function arguments but never stand-alone.
  */
 #define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)
 
 /**
  * Fill the provided buffer with a string containing a timestamp time
  * representation.
  *
  * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
  * @param ts the timestamp to represent
  * @param tb the timebase of the timestamp
  * @return the buffer in input
  */
 static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
 {
     if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
     else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
     return buf;
 }
 
 /**
  * Convenience macro, the return value should be used only directly in
  * function arguments but never stand-alone.
  */
 #define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)
 
 #endif /* AVUTIL_TIMESTAMP_H */