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Diffstat (limited to 'src/multimedia/audio/qaudio_mac_p.h')
-rw-r--r-- | src/multimedia/audio/qaudio_mac_p.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/multimedia/audio/qaudio_mac_p.h b/src/multimedia/audio/qaudio_mac_p.h deleted file mode 100644 index 06ce430..0000000 --- a/src/multimedia/audio/qaudio_mac_p.h +++ /dev/null @@ -1,145 +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 Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -// -// 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 <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 - - |