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2ba45a60 DM |
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 */ |