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** contained in the Technology Preview License Agreement accompanying

** this package.

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

** Foundation and appearing in the file LICENSE.LGPL included in the

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** ensure the GNU Lesser General Public License version 2.1 requirements

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//

//  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.

//

#include <QtCore/qstringlist.h>

#include <QtCore/qlist.h>

#include <QtCore/qbytearray.h>

#include <QtCore/qdatastream.h>

#include <QtCore/qdebug.h>

#include <qaudiodeviceinfo.h>

#include "qaudio_mac_p.h"

#include "qaudiodeviceinfo_mac_p.h"

QT_BEGIN_NAMESPACE

// XXX: remove at some future date

static inline QString cfStringToQString(CFStringRef str)

{

    CFIndex length = CFStringGetLength(str);

    const UniChar *chars = CFStringGetCharactersPtr(str);

    if (chars)

        return QString(reinterpret_cast<const QChar *>(chars), length);

    UniChar buffer[length];

    CFStringGetCharacters(str, CFRangeMake(0, length), buffer);

    return QString(reinterpret_cast<const QChar *>(buffer), length);

}

QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(QByteArray const& handle, QAudio::Mode)

{

    QDataStream ds(handle);

    quint32 did, tm;

    ds >> did >> tm >> name;

    deviceId = AudioDeviceID(did);

    mode = QAudio::Mode(tm);

}

bool QAudioDeviceInfoInternal::isFormatSupported(const QAudioFormat& format) const

{

    return format.codec() == QString::fromLatin1("audio/pcm");

}

QAudioFormat QAudioDeviceInfoInternal::preferredFormat() const

{

    QAudioFormat    rc;

    UInt32  propSize = 0;

    if (AudioDeviceGetPropertyInfo(deviceId,

                                    0,

                                    mode == QAudio::AudioInput,

                                    kAudioDevicePropertyStreams,

                                    &propSize,

                                    0) == noErr) {

        const int sc = propSize / sizeof(AudioStreamID);

        if (sc > 0) {

            AudioStreamID*  streams = new AudioStreamID[sc];

            if (AudioDeviceGetProperty(deviceId,

                                        0,

                                        mode == QAudio::AudioInput,

                                        kAudioDevicePropertyStreams,

                                        &propSize,

                                        streams) == noErr) {

                for (int i = 0; i < sc; ++i) {

                    if (AudioStreamGetPropertyInfo(streams[i],

                                                    0,

                                                    kAudioStreamPropertyPhysicalFormat,

                                                    &propSize,

                                                    0) == noErr) {

                        AudioStreamBasicDescription sf;

                        if (AudioStreamGetProperty(streams[i],

                                                    0,

                                                    kAudioStreamPropertyPhysicalFormat,

                                                    &propSize,

                                                    &sf) == noErr) {

                            rc = toQAudioFormat(sf);

                            break;

                        }

                    }

                }

            }

            delete streams;

        }

    }

    return rc;

}

QString QAudioDeviceInfoInternal::deviceName() const

{

    return name;

}

QStringList QAudioDeviceInfoInternal::supportedCodecs()

{

    return QStringList() << QString::fromLatin1("audio/pcm");

}

QList<int> QAudioDeviceInfoInternal::supportedSampleRates()

{

    QSet<int>  rc;

    // Add some common frequencies

    rc << 8000 << 11025 << 22050 << 44100;

    //

    UInt32  propSize = 0;

    if (AudioDeviceGetPropertyInfo(deviceId,

                                    0,

                                    mode == QAudio::AudioInput,

                                    kAudioDevicePropertyAvailableNominalSampleRates,

                                    &propSize,

                                    0) == noErr) {

        const int pc = propSize / sizeof(AudioValueRange);

        if (pc > 0) {

            AudioValueRange*    vr = new AudioValueRange[pc];

            if (AudioDeviceGetProperty(deviceId,

                                        0,

                                        mode == QAudio::AudioInput,

                                        kAudioDevicePropertyAvailableNominalSampleRates,

                                        &propSize,

                                        vr) == noErr) {

                for (int i = 0; i < pc; ++i)

                    rc << vr[i].mMaximum;

            }

            delete vr;

        }

    }

    return rc.toList();

}

QList<int> QAudioDeviceInfoInternal::supportedChannelCounts()

{

    QList<int>  rc;

    // Can mix down to 1 channel

    rc << 1;

    UInt32  propSize = 0;

    int     channels = 0;

    if (AudioDeviceGetPropertyInfo(deviceId, 

                                    0,

                                    mode == QAudio::AudioInput,

                                    kAudioDevicePropertyStreamConfiguration,

                                    &propSize, 

                                    0) == noErr) {

        AudioBufferList* audioBufferList = static_cast<AudioBufferList*>(qMalloc(propSize));

        if (audioBufferList != 0) {

            if (AudioDeviceGetProperty(deviceId, 

                                        0,

                                        mode == QAudio::AudioInput,

                                        kAudioDevicePropertyStreamConfiguration,

                                        &propSize,

                                        audioBufferList) == noErr) {

                for (int i = 0; i < int(audioBufferList->mNumberBuffers); ++i) {

                    channels += audioBufferList->mBuffers[i].mNumberChannels;

                    rc << channels;

                }

            }

            qFree(audioBufferList);

        }

    }

    return rc;

}

QList<int> QAudioDeviceInfoInternal::supportedSampleSizes()

{

    return QList<int>() << 8 << 16 << 24 << 32 << 64;

}

QList<QAudioFormat::Endian> QAudioDeviceInfoInternal::supportedByteOrders()

{

    return QList<QAudioFormat::Endian>() << QAudioFormat::LittleEndian << QAudioFormat::BigEndian;

}

QList<QAudioFormat::SampleType> QAudioDeviceInfoInternal::supportedSampleTypes()

{

    return QList<QAudioFormat::SampleType>() << QAudioFormat::SignedInt << QAudioFormat::UnSignedInt << QAudioFormat::Float;

}

static QByteArray get_device_info(AudioDeviceID audioDevice, QAudio::Mode mode)

{

    UInt32      size;

    QByteArray  device;

    QDataStream ds(&device, QIODevice::WriteOnly);

    AudioStreamBasicDescription     sf;

    CFStringRef name;

    Boolean     isInput = mode == QAudio::AudioInput;

    // Id

    ds << quint32(audioDevice);

    // Mode

    size = sizeof(AudioStreamBasicDescription);

    if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioDevicePropertyStreamFormat,

                                &size, &sf) != noErr) {

        return QByteArray();

    }

    ds << quint32(mode);

    // Name

    size = sizeof(CFStringRef);

    if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioObjectPropertyName,

                                &size, &name) != noErr) {

        qWarning() << "QAudioDeviceInfo: Unable to find device name";

    }

    ds << cfStringToQString(name);

    CFRelease(name);

    return device;

}

QByteArray QAudioDeviceInfoInternal::defaultInputDevice()

{

    AudioDeviceID   audioDevice;

    UInt32          size = sizeof(audioDevice);

    if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &size,

                                    &audioDevice) != noErr) {

        qWarning() << "QAudioDeviceInfo: Unable to find default input device";

        return QByteArray();

    }

    return get_device_info(audioDevice, QAudio::AudioInput);

}

QByteArray QAudioDeviceInfoInternal::defaultOutputDevice()

{

    AudioDeviceID audioDevice;

    UInt32        size = sizeof(audioDevice);

    if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &size,

                                    &audioDevice) != noErr) {

        qWarning() << "QAudioDeviceInfo: Unable to find default output device";

        return QByteArray();

    }

    return get_device_info(audioDevice, QAudio::AudioOutput);

}

QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)

{

    QList<QByteArray>   devices;

    UInt32  propSize = 0;

    if (AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &propSize, 0) == noErr) {

        const int dc = propSize / sizeof(AudioDeviceID);

        if (dc > 0) {

            AudioDeviceID*  audioDevices = new AudioDeviceID[dc];

            if (AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &propSize, audioDevices) == noErr) {

                for (int i = 0; i < dc; ++i) {

                    QByteArray info = get_device_info(audioDevices[i], mode);

                    if (!info.isNull())

                        devices << info;

                }

            }

            delete audioDevices;

        }

    }

    return devices;

}

QT_END_NAMESPACE