diff options
author | Justin McPherson <justin.mcpherson@nokia.com> | 2010-04-15 19:08:00 +1000 |
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committer | Justin McPherson <justin.mcpherson@nokia.com> | 2010-04-15 19:08:00 +1000 |
commit | e85223d233c0e1d6beca748332b8fbaba3ebbf2d (patch) | |
tree | 3f6b3df4e7255403ed1b26413240ea7008bf5883 /src/multimedia/audio/qaudio_mac_p.h | |
parent | 29bb0a4f0fc135337658e5fa273edb06eefaae3d (diff) |
Create Mediaservices lib, separate from Multimedia.
Diffstat (limited to 'src/multimedia/audio/qaudio_mac_p.h')
-rw-r--r-- | src/multimedia/audio/qaudio_mac_p.h | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/src/multimedia/audio/qaudio_mac_p.h b/src/multimedia/audio/qaudio_mac_p.h deleted file mode 100644 index 4e7d6882b0..0000000000 --- a/src/multimedia/audio/qaudio_mac_p.h +++ /dev/null @@ -1,144 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtMultimedia module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists for the convenience -// of other Qt classes. This header file may change from version to -// version without notice, or even be removed. -// -// We mean it. -// - - -#ifndef QAUDIO_MAC_P_H -#define QAUDIO_MAC_P_H - -#include <CoreAudio/CoreAudio.h> - -#include <QtCore/qdebug.h> -#include <QtCore/qatomic.h> - -#include <QtMultimedia/qaudioformat.h> - -QT_BEGIN_HEADER - -QT_BEGIN_NAMESPACE - -QT_MODULE(Multimedia) - - -extern QDebug operator<<(QDebug dbg, const QAudioFormat& audioFormat); - -extern QAudioFormat toQAudioFormat(const AudioStreamBasicDescription& streamFormat); -extern AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat); - -class QAudioRingBuffer -{ -public: - typedef QPair<char*, int> Region; - - QAudioRingBuffer(int bufferSize); - ~QAudioRingBuffer(); - - Region acquireReadRegion(int size) - { - const int used = m_bufferUsed.fetchAndAddAcquire(0); - - if (used > 0) { - const int readSize = qMin(size, qMin(m_bufferSize - m_readPos, used)); - - return readSize > 0 ? Region(m_buffer + m_readPos, readSize) : Region(0, 0); - } - - return Region(0, 0); - } - - void releaseReadRegion(Region const& region) - { - m_readPos = (m_readPos + region.second) % m_bufferSize; - - m_bufferUsed.fetchAndAddRelease(-region.second); - } - - Region acquireWriteRegion(int size) - { - const int free = m_bufferSize - m_bufferUsed.fetchAndAddAcquire(0); - - if (free > 0) { - const int writeSize = qMin(size, qMin(m_bufferSize - m_writePos, free)); - - return writeSize > 0 ? Region(m_buffer + m_writePos, writeSize) : Region(0, 0); - } - - return Region(0, 0); - } - - void releaseWriteRegion(Region const& region) - { - m_writePos = (m_writePos + region.second) % m_bufferSize; - - m_bufferUsed.fetchAndAddRelease(region.second); - } - - int used() const; - int free() const; - int size() const; - - void reset(); - -private: - int m_bufferSize; - int m_readPos; - int m_writePos; - char* m_buffer; - QAtomicInt m_bufferUsed; -}; - -QT_END_NAMESPACE - -QT_END_HEADER - -#endif // QAUDIO_MAC_P_H - - |