Mercurial > hg > forks > libbpg
comparison libavutil/timestamp.h @ 0:772086c29cc7
Initial import.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Wed, 16 Nov 2016 11:16:33 +0200 |
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-1:000000000000 | 0:772086c29cc7 |
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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 #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 */ | |
43 static 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 */ | |
65 static 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 */ |