Mercurial > hg > svcore
comparison base/BaseTypes.h @ 1057:5c5d4863b428 tonioni
Merge from cxx11 branch
author | Chris Cannam |
---|---|
date | Mon, 23 Mar 2015 11:26:28 +0000 |
parents | cafd65fc411b |
children | d4a28d1479a8 54af1e21705c |
comparison
equal
deleted
inserted
replaced
1056:c4898e57eea5 | 1057:5c5d4863b428 |
---|---|
1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ | |
2 | |
3 /* | |
4 Sonic Visualiser | |
5 An audio file viewer and annotation editor. | |
6 Centre for Digital Music, Queen Mary, University of London. | |
7 | |
8 This program is free software; you can redistribute it and/or | |
9 modify it under the terms of the GNU General Public License as | |
10 published by the Free Software Foundation; either version 2 of the | |
11 License, or (at your option) any later version. See the file | |
12 COPYING included with this distribution for more information. | |
13 */ | |
14 | |
15 #ifndef BASE_TYPES_H | |
16 #define BASE_TYPES_H | |
17 | |
18 #include <cstdint> | |
19 | |
20 /** Frame index, the unit of our time axis. This is signed because the | |
21 axis conceptually extends below zero: zero represents the start of | |
22 the main loaded audio model, not the start of time; a windowed | |
23 transform could legitimately produce results before then. We also | |
24 use this for frame counts, simply to avoid error-prone arithmetic | |
25 between signed and unsigned types. | |
26 */ | |
27 typedef int64_t sv_frame_t; | |
28 | |
29 /** Check whether an integer index is in range for a container, | |
30 avoiding overflows and signed/unsigned comparison warnings. | |
31 */ | |
32 template<typename T, typename C> | |
33 bool in_range_for(const C &container, T i) | |
34 { | |
35 if (i < 0) return false; | |
36 if (sizeof(T) > sizeof(typename C::size_type)) { | |
37 return i < static_cast<T>(container.size()); | |
38 } else { | |
39 return static_cast<typename C::size_type>(i) < container.size(); | |
40 } | |
41 } | |
42 | |
43 /** Sample rate. We have to deal with sample rates provided as float | |
44 or (unsigned) int types, so we might as well have a type that can | |
45 represent both. Storage size isn't an issue anyway. | |
46 */ | |
47 typedef double sv_samplerate_t; | |
48 | |
49 #endif | |
50 |