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| 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 | +#define AV_TS_MAX_STRING_SIZE 32 |
| 31 | + |
| 32 | +/** |
| 33 | + * Fill the provided buffer with a string containing a timestamp |
| 34 | + * representation. |
| 35 | + * |
| 36 | + * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE |
| 37 | + * @param ts the timestamp to represent |
| 38 | + * @return the buffer in input |
| 39 | + */ |
| 40 | +static inline char *av_ts_make_string(char *buf, int64_t ts) |
| 41 | +{ |
| 42 | + if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); |
| 43 | + else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64"", ts); |
| 44 | + return buf; |
| 45 | +} |
| 46 | + |
| 47 | +/** |
| 48 | + * Convenience macro, the return value should be used only directly in |
| 49 | + * function arguments but never stand-alone. |
| 50 | + */ |
| 51 | +#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts) |
| 52 | + |
| 53 | +/** |
| 54 | + * Fill the provided buffer with a string containing a timestamp time |
| 55 | + * representation. |
| 56 | + * |
| 57 | + * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE |
| 58 | + * @param ts the timestamp to represent |
| 59 | + * @param tb the timebase of the timestamp |
| 60 | + * @return the buffer in input |
| 61 | + */ |
| 62 | +static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb) |
| 63 | +{ |
| 64 | + if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); |
| 65 | + else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts); |
| 66 | + return buf; |
| 67 | +} |
| 68 | + |
| 69 | +/** |
| 70 | + * Convenience macro, the return value should be used only directly in |
| 71 | + * function arguments but never stand-alone. |
| 72 | + */ |
| 73 | +#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb) |
| 74 | + |
| 75 | +#endif /* AVUTIL_TIMESTAMP_H */ |