blob: e082f01b40b332fc3bfec2ed86d65d2eaafe5d5e
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 */ |
79 |