ffmpeg.libavutil.timestamp source code

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 module ffmpeg.libavutil.timestamp;
25 
26 import std.stdint;
27 
28 public import ffmpeg.libavutil.common;
29 public import ffmpeg.libavutil.rational;
30 public import ffmpeg.libavutil.avutil_version;
31 
32 extern(C):
33 
34 /**
35  * Fill the provided buffer with a string containing a timestamp time
36  * representation.
37  *
38  * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
39  * @param ts the timestamp to represent
40  * @param tb the timebase of the timestamp
41  * @return the buffer in input
42  */
43 string av_ts_make_string(int64_t ts)
44 {
45     import std.format : format;
46   if (ts == 0x8000000000000000) {
47     return "NOPTS";
48   } else {
49     return format!"%d"(ts);
50   }
51 }
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 string av_ts_make_time_string(int64_t ts, AVRational tb)
63 {
64   import std.format : format;
65   if (ts == 0x8000000000000000) {
66     return "NOPTS";
67   } else {
68     return format!"%.6g"(av_q2d(tb) * ts);
69   }
70 }
71 
72 // end avutil.h