1 /*****************************************************************************
2  * Time.hpp: Adaptative streaming time definitions
3  *****************************************************************************
4  * Copyright © 2015 - VideoLAN and VLC Authors
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU Lesser General Public License as published
8  * by the Free Software Foundation; either version 2.1 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19  *****************************************************************************/
20 #ifndef TIME_HPP
21 #define TIME_HPP
22 
23 #include <vlc_common.h>
24 
25 /* Scaled time */
26 typedef int64_t stime_t;
27 
28 class Timescale
29 {
30     public:
Timescale(uint64_t v=0)31         Timescale(uint64_t v = 0) : scale(v) {}
32 
ToTime(stime_t t) const33         mtime_t ToTime(stime_t t) const
34         {
35             if( !scale ) return 0;
36             stime_t v = t / scale;
37             stime_t r = t % scale;
38             return v * 1000000 + r * 1000000 / scale;
39         }
40 
ToScaled(mtime_t t) const41         stime_t ToScaled(mtime_t t) const
42         {
43             mtime_t v = t / 1000000;
44             mtime_t r = t % 1000000;
45             return v * scale + r * scale / 1000000;
46         }
47 
isValid() const48         bool isValid() const { return !!scale; }
operator uint64_t() const49         operator uint64_t() const { return scale; }
50 
51     private:
52         uint64_t scale;
53 };
54 
55 #endif // TIME_HPP
56 
57