Phonon

audioformat.cpp
1/* This file is part of the KDE project
2 Copyright (C) 2008 Matthias Kretz <kretz@kde.org>
3
4 This library 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) version 3, or any
8 later version accepted by the membership of KDE e.V. (or its
9 successor approved by the membership of KDE e.V.), Nokia Corporation
10 (or its successors, if any) and the KDE Free Qt Foundation, which shall
11 act as a proxy defined in Section 6 of version 3 of the license.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with this library. If not, see <http://www.gnu.org/licenses/>.
20
21*/
22
23#include "audioformat.h"
24#include "phonondefs_p.h"
25
26namespace Phonon
27{
28namespace Experimental
29{
30
31class AudioFormatPrivate
32{
33 P_DECLARE_PUBLIC(AudioFormat)
34 protected:
35 AudioFormat *q_ptr;
36};
37
38AudioFormat::AudioFormat(int sampleRate, int channelCount, Phonon::Experimental::BitRate bitRate, QSysInfo::Endian byteOrder)
39{
40 s.m_sampleRate = sampleRate;
41 s.m_channelCount = channelCount;
42 s.m_bitRate = bitRate;
43 s.m_byteOrder = byteOrder;
44}
45
46AudioFormat::~AudioFormat()
47{
48}
49
50int AudioFormat::sampleRate() const
51{
52 return s.m_sampleRate;
53}
54
55int AudioFormat::channelCount() const
56{
57 return s.m_channelCount;
58}
59
60Phonon::Experimental::BitRate AudioFormat::bitRate() const
61{
62 return s.m_bitRate;
63}
64
65QSysInfo::Endian AudioFormat::byteOrder() const
66{
67 return s.m_byteOrder;
68}
69
70AudioFormat::AudioFormat(const AudioFormat &f)
71{
72 s.m_sampleRate = f.sampleRate();
73 s.m_channelCount = f.channelCount();
74 s.m_bitRate = f.bitRate();
75 s.m_byteOrder = f.byteOrder();
76}
77
78AudioFormat &AudioFormat::operator=(const AudioFormat &f)
79{
80 s.m_sampleRate = f.sampleRate();
81 s.m_channelCount = f.channelCount();
82 s.m_bitRate = f.bitRate();
83 s.m_byteOrder = f.byteOrder();
84 return *this;
85}
86
87bool AudioFormat::operator==(const AudioFormat &f) const
88{
89 return s.m_sampleRate == f.sampleRate() &&
90 s.m_channelCount == f.channelCount() &&
91 s.m_bitRate == f.bitRate() &&
92 s.m_byteOrder == f.byteOrder();
93}
94
95bool AudioFormat::operator<(const AudioFormat &f) const
96{
97 return s.m_bitRate < f.bitRate() ||
98 (s.m_bitRate == f.bitRate() && (s.m_sampleRate < f.sampleRate() ||
99 (s.m_sampleRate == f.sampleRate() && (s.m_channelCount < f.channelCount() ||
100 (s.m_channelCount == f.channelCount() && s.m_byteOrder != QSysInfo::ByteOrder && f.byteOrder() == QSysInfo::ByteOrder)))));
101}
102
103quint32 AudioFormat::key() const
104{
105 return (s.m_byteOrder == QSysInfo::ByteOrder ? 1 : 0) + // 1 bit least significant
106 (s.m_channelCount << 1) + // give it 8 bits
107 (s.m_sampleRate) + // 192kHz ~ 18 bits (let the (unimportant) lower 9 bits overlap with channels + byteOrder)
108 (s.m_bitRate << 18); // most significant
109}
110
111} // namespace Experimental
112} // namespace Phonon
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