399500f87e
Change-Id: Ia8c1c38aba1544603fada8c414cc856f365fd15b Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
131 lines
4.3 KiB
C++
131 lines
4.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qaudio_mac_p.h"
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QT_BEGIN_NAMESPACE
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// Conversion
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QAudioFormat toQAudioFormat(AudioStreamBasicDescription const& sf)
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{
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QAudioFormat audioFormat;
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audioFormat.setSampleRate(sf.mSampleRate);
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audioFormat.setChannelCount(sf.mChannelsPerFrame);
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audioFormat.setSampleSize(sf.mBitsPerChannel);
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audioFormat.setCodec(QString::fromLatin1("audio/pcm"));
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audioFormat.setByteOrder((sf.mFormatFlags & kAudioFormatFlagIsBigEndian) != 0 ? QAudioFormat::BigEndian : QAudioFormat::LittleEndian);
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QAudioFormat::SampleType type = QAudioFormat::UnSignedInt;
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if ((sf.mFormatFlags & kAudioFormatFlagIsSignedInteger) != 0)
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type = QAudioFormat::SignedInt;
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else if ((sf.mFormatFlags & kAudioFormatFlagIsFloat) != 0)
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type = QAudioFormat::Float;
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audioFormat.setSampleType(type);
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return audioFormat;
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}
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AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat)
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{
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AudioStreamBasicDescription sf;
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sf.mFormatFlags = kAudioFormatFlagIsPacked;
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sf.mSampleRate = audioFormat.sampleRate();
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sf.mFramesPerPacket = 1;
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sf.mChannelsPerFrame = audioFormat.channelCount();
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sf.mBitsPerChannel = audioFormat.sampleSize();
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sf.mBytesPerFrame = sf.mChannelsPerFrame * (sf.mBitsPerChannel / 8);
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sf.mBytesPerPacket = sf.mFramesPerPacket * sf.mBytesPerFrame;
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sf.mFormatID = kAudioFormatLinearPCM;
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switch (audioFormat.sampleType()) {
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case QAudioFormat::SignedInt: sf.mFormatFlags |= kAudioFormatFlagIsSignedInteger; break;
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case QAudioFormat::UnSignedInt: /* default */ break;
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case QAudioFormat::Float: sf.mFormatFlags |= kAudioFormatFlagIsFloat; break;
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case QAudioFormat::Unknown: default: break;
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}
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if (audioFormat.byteOrder() == QAudioFormat::BigEndian)
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sf.mFormatFlags |= kAudioFormatFlagIsBigEndian;
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return sf;
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}
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// QAudioRingBuffer
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QAudioRingBuffer::QAudioRingBuffer(int bufferSize):
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m_bufferSize(bufferSize)
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{
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m_buffer = new char[m_bufferSize];
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reset();
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}
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QAudioRingBuffer::~QAudioRingBuffer()
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{
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delete m_buffer;
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}
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int QAudioRingBuffer::used() const
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{
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return m_bufferUsed.load();
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}
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int QAudioRingBuffer::free() const
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{
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return m_bufferSize - m_bufferUsed.load();
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}
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int QAudioRingBuffer::size() const
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{
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return m_bufferSize;
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}
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void QAudioRingBuffer::reset()
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{
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m_readPos = 0;
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m_writePos = 0;
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m_bufferUsed.store(0);
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}
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QT_END_NAMESPACE
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