--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/src/multimedia/audio/qaudiodevicefactory.cpp	Wed Jun 23 19:08:38 2010 +0300
@@ -0,0 +1,293 @@
+/****************************************************************************
+**
+** 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 Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qdebug.h>
+
+#include "qaudiosystem.h"
+#include "qaudiosystemplugin.h"
+
+#include <private/qfactoryloader_p.h>
+#include "qaudiodevicefactory_p.h"
+
+#ifndef QT_NO_AUDIO_BACKEND
+#if defined(Q_OS_WIN)
+#include "qaudiodeviceinfo_win32_p.h"
+#include "qaudiooutput_win32_p.h"
+#include "qaudioinput_win32_p.h"
+#elif defined(Q_OS_MAC)
+#include "qaudiodeviceinfo_mac_p.h"
+#include "qaudiooutput_mac_p.h"
+#include "qaudioinput_mac_p.h"
+#elif defined(HAS_ALSA)
+#include "qaudiodeviceinfo_alsa_p.h"
+#include "qaudiooutput_alsa_p.h"
+#include "qaudioinput_alsa_p.h"
+#elif defined(Q_OS_SYMBIAN)
+#include "qaudiodeviceinfo_symbian_p.h"
+#include "qaudiooutput_symbian_p.h"
+#include "qaudioinput_symbian_p.h"
+#endif
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
+        (QAudioSystemFactoryInterface_iid, QLatin1String("/audio"), Qt::CaseInsensitive))
+#endif
+
+class QNullDeviceInfo : public QAbstractAudioDeviceInfo
+{
+public:
+    QAudioFormat preferredFormat() const { qWarning()<<"using null deviceinfo, none available"; return QAudioFormat(); }
+    bool isFormatSupported(const QAudioFormat& ) const { return false; }
+    QAudioFormat nearestFormat(const QAudioFormat& ) const { return QAudioFormat(); }
+    QString deviceName() const { return QString(); }
+    QStringList supportedCodecs() { return QStringList(); }
+    QList<int> supportedSampleRates()  { return QList<int>(); }
+    QList<int> supportedChannelCounts() { return QList<int>(); }
+    QList<int> supportedSampleSizes() { return QList<int>(); }
+    QList<QAudioFormat::Endian> supportedByteOrders() { return QList<QAudioFormat::Endian>(); }
+    QList<QAudioFormat::SampleType> supportedSampleTypes() { return QList<QAudioFormat::SampleType>(); }
+};
+
+class QNullInputDevice : public QAbstractAudioInput
+{
+public:
+    void start(QIODevice*) { qWarning()<<"using null input device, none available";}
+    QIODevice* start() { qWarning()<<"using null input device, none available"; return 0; }
+    void stop() {}
+    void reset() {}
+    void suspend() {}
+    void resume() {}
+    int bytesReady() const { return 0; }
+    int periodSize() const { return 0; }
+    void setBufferSize(int ) {}
+    int bufferSize() const  { return 0; }
+    void setNotifyInterval(int ) {}
+    int notifyInterval() const { return 0; }
+    qint64 processedUSecs() const { return 0; }
+    qint64 elapsedUSecs() const { return 0; }
+    QAudio::Error error() const { return QAudio::OpenError; }
+    QAudio::State state() const { return QAudio::StoppedState; }
+    void setFormat(const QAudioFormat&) {}
+    QAudioFormat format() const { return QAudioFormat(); }
+};
+
+class QNullOutputDevice : public QAbstractAudioOutput
+{
+public:
+    void start(QIODevice*) {qWarning()<<"using null output device, none available";}
+    QIODevice* start() { qWarning()<<"using null output device, none available"; return 0; }
+    void stop() {}
+    void reset() {}
+    void suspend() {}
+    void resume() {}
+    int bytesFree() const { return 0; }
+    int periodSize() const { return 0; }
+    void setBufferSize(int ) {}
+    int bufferSize() const  { return 0; }
+    void setNotifyInterval(int ) {}
+    int notifyInterval() const { return 0; }
+    qint64 processedUSecs() const { return 0; }
+    qint64 elapsedUSecs() const { return 0; }
+    QAudio::Error error() const { return QAudio::OpenError; }
+    QAudio::State state() const { return QAudio::StoppedState; }
+    void setFormat(const QAudioFormat&) {}
+    QAudioFormat format() const { return QAudioFormat(); }
+};
+
+QList<QAudioDeviceInfo> QAudioDeviceFactory::availableDevices(QAudio::Mode mode)
+{
+    QList<QAudioDeviceInfo> devices;
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    foreach (const QByteArray &handle, QAudioDeviceInfoInternal::availableDevices(mode))
+        devices << QAudioDeviceInfo(QLatin1String("builtin"), handle, mode);
+#endif
+#endif
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QFactoryLoader* l = loader();
+
+    foreach (QString const& key, l->keys()) {
+        QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(l->instance(key));
+        if (plugin) {
+            foreach (QByteArray const& handle, plugin->availableDevices(mode))
+                devices << QAudioDeviceInfo(key, handle, mode);
+        }
+
+        delete plugin;
+    }
+#endif
+
+    return devices;
+}
+
+QAudioDeviceInfo QAudioDeviceFactory::defaultInputDevice()
+{
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(QLatin1String("default")));
+
+    if (plugin) {
+        QList<QByteArray> list = plugin->availableDevices(QAudio::AudioInput);
+        if (list.size() > 0)
+            return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioInput);
+    }
+#endif
+
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultInputDevice(), QAudio::AudioInput);
+#endif
+#endif
+    return QAudioDeviceInfo();
+}
+
+QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
+{
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(QLatin1String("default")));
+
+    if (plugin) {
+        QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);
+        if (list.size() > 0)
+            return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput);
+    }
+#endif
+
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultOutputDevice(), QAudio::AudioOutput);
+#endif
+#endif
+    return QAudioDeviceInfo();
+}
+
+QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &realm, const QByteArray &handle, QAudio::Mode mode)
+{
+    QAbstractAudioDeviceInfo *rc = 0;
+
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    if (realm == QLatin1String("builtin"))
+        return new QAudioDeviceInfoInternal(handle, mode);
+#endif
+#endif
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QAudioSystemFactoryInterface* plugin =
+        qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(realm));
+
+    if (plugin)
+        rc = plugin->createDeviceInfo(handle, mode);
+#endif
+
+    return rc == 0 ? new QNullDeviceInfo() : rc;
+}
+
+QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format)
+{
+    return createInputDevice(defaultInputDevice(), format);
+}
+
+QAbstractAudioOutput* QAudioDeviceFactory::createDefaultOutputDevice(QAudioFormat const &format)
+{
+    return createOutputDevice(defaultOutputDevice(), format);
+}
+
+QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)
+{
+    if (deviceInfo.isNull())
+        return new QNullInputDevice();
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    if (deviceInfo.realm() == QLatin1String("builtin")) {
+        QAbstractAudioInput* p = new QAudioInputPrivate(deviceInfo.handle());
+        if (p) p->setFormat(format);
+        return p;
+    }
+#endif
+#endif
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QAudioSystemFactoryInterface* plugin =
+        qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(deviceInfo.realm()));
+
+    if (plugin) {
+        QAbstractAudioInput* p = plugin->createInput(deviceInfo.handle());
+        if (p) p->setFormat(format);
+        return p;
+    }
+#endif
+
+    return new QNullInputDevice();
+}
+
+QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)
+{
+    if (deviceInfo.isNull())
+        return new QNullOutputDevice();
+#ifndef QT_NO_AUDIO_BACKEND
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
+    if (deviceInfo.realm() == QLatin1String("builtin")) {
+        QAbstractAudioOutput* p = new QAudioOutputPrivate(deviceInfo.handle());
+        if (p) p->setFormat(format);
+        return p;
+    }
+#endif
+#endif
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    QAudioSystemFactoryInterface* plugin =
+        qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(deviceInfo.realm()));
+
+    if (plugin) {
+        QAbstractAudioOutput* p = plugin->createOutput(deviceInfo.handle());
+        if (p) p->setFormat(format);
+        return p;
+    }
+#endif
+
+    return new QNullOutputDevice();
+}
+
+QT_END_NAMESPACE
+