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diff --git a/src/multimedia/platform/darwin/audio/qcoreaudioutils.mm b/src/multimedia/platform/darwin/audio/qcoreaudioutils.mm
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the plugins of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qcoreaudioutils_p.h"
-#include <mach/mach_time.h>
-
-QT_BEGIN_NAMESPACE
-
-double CoreAudioUtils::sFrequency = 0.0;
-bool CoreAudioUtils::sIsInitialized = false;
-
-void CoreAudioUtils::initialize()
-{
- struct mach_timebase_info timeBaseInfo;
- mach_timebase_info(&timeBaseInfo);
- sFrequency = static_cast<double>(timeBaseInfo.denom) / static_cast<double>(timeBaseInfo.numer);
- sFrequency *= 1000000000.0;
-
- sIsInitialized = true;
-}
-
-
-quint64 CoreAudioUtils::currentTime()
-{
- return mach_absolute_time();
-}
-
-double CoreAudioUtils::frequency()
-{
- if (!sIsInitialized)
- initialize();
- return sFrequency;
-}
-
-QAudioFormat CoreAudioUtils::toQAudioFormat(AudioStreamBasicDescription const& sf)
-{
- QAudioFormat audioFormat;
- // all Darwin HW is little endian, we ignore those formats
- if ((sf.mFormatFlags & kAudioFormatFlagIsBigEndian) != 0 && QSysInfo::ByteOrder != QSysInfo::LittleEndian)
- return audioFormat;
-
- // filter out the formats we're interested in
- QAudioFormat::SampleFormat format = QAudioFormat::Unknown;
- switch (sf.mBitsPerChannel) {
- case 8:
- if ((sf.mFormatFlags & kAudioFormatFlagIsSignedInteger) == 0)
- format = QAudioFormat::UInt8;
- break;
- case 16:
- if ((sf.mFormatFlags & kAudioFormatFlagIsSignedInteger) != 0)
- format = QAudioFormat::Int16;
- break;
- case 32:
- if ((sf.mFormatFlags & kAudioFormatFlagIsSignedInteger) != 0)
- format = QAudioFormat::Int32;
- else if ((sf.mFormatFlags & kAudioFormatFlagIsFloat) != 0)
- format = QAudioFormat::Float;
- break;
- default:
- break;
- }
-
- audioFormat.setSampleFormat(format);
- audioFormat.setSampleRate(sf.mSampleRate);
- audioFormat.setChannelCount(sf.mChannelsPerFrame);
-
- return audioFormat;
-}
-
-AudioStreamBasicDescription CoreAudioUtils::toAudioStreamBasicDescription(QAudioFormat const& audioFormat)
-{
- AudioStreamBasicDescription sf;
-
- sf.mFormatFlags = kAudioFormatFlagIsPacked;
- sf.mSampleRate = audioFormat.sampleRate();
- sf.mFramesPerPacket = 1;
- sf.mChannelsPerFrame = audioFormat.channelCount();
- sf.mBitsPerChannel = audioFormat.bytesPerSample() * 8;
- sf.mBytesPerFrame = audioFormat.bytesPerFrame();
- sf.mBytesPerPacket = sf.mFramesPerPacket * sf.mBytesPerFrame;
- sf.mFormatID = kAudioFormatLinearPCM;
-
- switch (audioFormat.sampleFormat()) {
- case QAudioFormat::Int16:
- case QAudioFormat::Int32:
- sf.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
- break;
- case QAudioFormat::Float:
- sf.mFormatFlags |= kAudioFormatFlagIsFloat;
- break;
- case QAudioFormat::UInt8:
- /* default */
- case QAudioFormat::Unknown:
- case QAudioFormat::NSampleFormats:
- break;
- }
-
- return sf;
-}
-
-// QAudioRingBuffer
-CoreAudioRingBuffer::CoreAudioRingBuffer(int bufferSize):
- m_bufferSize(bufferSize)
-{
- m_buffer = new char[m_bufferSize];
- reset();
-}
-
-CoreAudioRingBuffer::~CoreAudioRingBuffer()
-{
- delete[] m_buffer;
-}
-
-CoreAudioRingBuffer::Region CoreAudioRingBuffer::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 CoreAudioRingBuffer::releaseReadRegion(const CoreAudioRingBuffer::Region &region)
-{
- m_readPos = (m_readPos + region.second) % m_bufferSize;
-
- m_bufferUsed.fetchAndAddRelease(-region.second);
-}
-
-CoreAudioRingBuffer::Region CoreAudioRingBuffer::acquireWriteRegion(int size)
-{
- const int free = m_bufferSize - m_bufferUsed.fetchAndAddAcquire(0);
-
- Region output;
-
- if (free > 0) {
- const int writeSize = qMin(size, qMin(m_bufferSize - m_writePos, free));
- output = writeSize > 0 ? Region(m_buffer + m_writePos, writeSize) : Region(0, 0);
- } else {
- output = Region(0, 0);
- }
-#ifdef QT_DEBUG_COREAUDIO
- qDebug("acquireWriteRegion(%d) free: %d returning Region(%p, %d)", size, free, output.first, output.second);
-#endif
- return output;
-}
-void CoreAudioRingBuffer::releaseWriteRegion(const CoreAudioRingBuffer::Region &region)
-{
- m_writePos = (m_writePos + region.second) % m_bufferSize;
-
- m_bufferUsed.fetchAndAddRelease(region.second);
-#ifdef QT_DEBUG_COREAUDIO
- qDebug("releaseWriteRegion(%p,%d): m_writePos:%d", region.first, region.second, m_writePos);
-#endif
-}
-
-int CoreAudioRingBuffer::used() const
-{
- return m_bufferUsed.loadRelaxed();
-}
-
-int CoreAudioRingBuffer::free() const
-{
- return m_bufferSize - m_bufferUsed.loadRelaxed();
-}
-
-int CoreAudioRingBuffer::size() const
-{
- return m_bufferSize;
-}
-
-void CoreAudioRingBuffer::reset()
-{
- m_readPos = 0;
- m_writePos = 0;
- m_bufferUsed.storeRelaxed(0);
-}
-
-QT_END_NAMESPACE
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