yading@11: /*
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: /**
yading@11:  * @file
yading@11:  * timestamp utils, mostly useful for debugging/logging purposes
yading@11:  */
yading@11: 
yading@11: #ifndef AVUTIL_TIMESTAMP_H
yading@11: #define AVUTIL_TIMESTAMP_H
yading@11: 
yading@11: #include "common.h"
yading@11: 
yading@11: #define AV_TS_MAX_STRING_SIZE 32
yading@11: 
yading@11: /**
yading@11:  * Fill the provided buffer with a string containing a timestamp
yading@11:  * representation.
yading@11:  *
yading@11:  * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
yading@11:  * @param ts the timestamp to represent
yading@11:  * @return the buffer in input
yading@11:  */
yading@11: static inline char *av_ts_make_string(char *buf, int64_t ts)
yading@11: {
yading@11:     if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
yading@11:     else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64"", ts);
yading@11:     return buf;
yading@11: }
yading@11: 
yading@11: /**
yading@11:  * Convenience macro, the return value should be used only directly in
yading@11:  * function arguments but never stand-alone.
yading@11:  */
yading@11: #define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)
yading@11: 
yading@11: /**
yading@11:  * Fill the provided buffer with a string containing a timestamp time
yading@11:  * representation.
yading@11:  *
yading@11:  * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
yading@11:  * @param ts the timestamp to represent
yading@11:  * @param tb the timebase of the timestamp
yading@11:  * @return the buffer in input
yading@11:  */
yading@11: static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
yading@11: {
yading@11:     if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
yading@11:     else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
yading@11:     return buf;
yading@11: }
yading@11: 
yading@11: /**
yading@11:  * Convenience macro, the return value should be used only directly in
yading@11:  * function arguments but never stand-alone.
yading@11:  */
yading@11: #define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)
yading@11: 
yading@11: #endif /* AVUTIL_TIMESTAMP_H */