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** this package.

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** General Public License version 2.1 as published by the Free Software

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****************************************************************************/

#include "qaudio_mac_p.h"

QT_BEGIN_NAMESPACE

// Debugging

QDebug operator<<(QDebug dbg, const QAudioFormat& audioFormat)

{

    dbg.nospace() << "QAudioFormat(" <<

            audioFormat.frequency() << "," <<

            audioFormat.channels() << "," <<

            audioFormat.sampleSize()<< "," <<

            audioFormat.codec() << "," <<

            audioFormat.byteOrder() << "," <<

            audioFormat.sampleType() << ")";

    return dbg.space();

}

// Conversion

QAudioFormat toQAudioFormat(AudioStreamBasicDescription const& sf)

{

    QAudioFormat    audioFormat;

    audioFormat.setFrequency(sf.mSampleRate);

    audioFormat.setChannels(sf.mChannelsPerFrame);

    audioFormat.setSampleSize(sf.mBitsPerChannel);

    audioFormat.setCodec(QString::fromLatin1("audio/pcm"));

    audioFormat.setByteOrder(sf.mFormatFlags & kLinearPCMFormatFlagIsBigEndian != 0 ? QAudioFormat::BigEndian : QAudioFormat::LittleEndian);

    QAudioFormat::SampleType type = QAudioFormat::UnSignedInt;

    if ((sf.mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) != 0)

        type = QAudioFormat::SignedInt;

    else if ((sf.mFormatFlags & kLinearPCMFormatFlagIsFloat) != 0)

        type = QAudioFormat::Float;

    audioFormat.setSampleType(type);

    return audioFormat;

}

AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat)

{

    AudioStreamBasicDescription sf;

    sf.mFormatFlags         = kAudioFormatFlagIsPacked;

    sf.mSampleRate          = audioFormat.frequency();

    sf.mFramesPerPacket     = 1;

    sf.mChannelsPerFrame    = audioFormat.channels();

    sf.mBitsPerChannel      = audioFormat.sampleSize();

    sf.mBytesPerFrame       = sf.mChannelsPerFrame * (sf.mBitsPerChannel / 8);

    sf.mBytesPerPacket      = sf.mFramesPerPacket * sf.mBytesPerFrame;

    sf.mFormatID            = kAudioFormatLinearPCM;

    switch (audioFormat.sampleType()) {

    case QAudioFormat::SignedInt: sf.mFormatFlags |= kAudioFormatFlagIsSignedInteger; break;

    case QAudioFormat::UnSignedInt: /* default */ break;

    case QAudioFormat::Float: sf.mFormatFlags |= kAudioFormatFlagIsFloat; break;

    case QAudioFormat::Unknown:  default: break;

    }

    return sf;

}

// QAudioRingBuffer

QAudioRingBuffer::QAudioRingBuffer(int bufferSize):

    m_bufferSize(bufferSize)

{

    m_buffer = new char[m_bufferSize];

    reset();

}

QAudioRingBuffer::~QAudioRingBuffer()

{

    delete m_buffer;

}

int QAudioRingBuffer::used() const

{

    return m_bufferUsed;

}

int QAudioRingBuffer::free() const

{

    return m_bufferSize - m_bufferUsed;

}

int QAudioRingBuffer::size() const

{

    return m_bufferSize;

}

void QAudioRingBuffer::reset()

{

    m_readPos = 0;

    m_writePos = 0;

    m_bufferUsed = 0;

}

QT_END_NAMESPACE