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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

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     7 ** This file is part of the Qt Mobility Components.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

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

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <QtCore/qdebug.h>

    43 

    44 #include "qaudiosystem.h"

    45 #include "qaudiosystemplugin.h"

    46 

    47 #include <private/qfactoryloader_p.h>

    48 #include "qaudiodevicefactory_p.h"

    49 

    50 #ifndef QT_NO_AUDIO_BACKEND

    51 #if defined(Q_OS_WIN)

    52 #include "qaudiodeviceinfo_win32_p.h"

    53 #include "qaudiooutput_win32_p.h"

    54 #include "qaudioinput_win32_p.h"

    55 #elif defined(Q_OS_MAC)

    56 #include "qaudiodeviceinfo_mac_p.h"

    57 #include "qaudiooutput_mac_p.h"

    58 #include "qaudioinput_mac_p.h"

    59 #elif defined(HAS_ALSA)

    60 #include "qaudiodeviceinfo_alsa_p.h"

    61 #include "qaudiooutput_alsa_p.h"

    62 #include "qaudioinput_alsa_p.h"

    63 #elif defined(Q_OS_SYMBIAN)

    64 #include "qaudiodeviceinfo_symbian_p.h"

    65 #include "qaudiooutput_symbian_p.h"

    66 #include "qaudioinput_symbian_p.h"

    67 #endif

    68 #endif

    69 

    70 QT_BEGIN_NAMESPACE

    71 

    72 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

    73 Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,

    74         (QAudioSystemFactoryInterface_iid, QLatin1String("/audio"), Qt::CaseInsensitive))

    75 #endif

    76 

    77 class QNullDeviceInfo : public QAbstractAudioDeviceInfo

    78 {

    79 public:

    80     QAudioFormat preferredFormat() const { qWarning()<<"using null deviceinfo, none available"; return QAudioFormat(); }

    81     bool isFormatSupported(const QAudioFormat& ) const { return false; }

    82     QAudioFormat nearestFormat(const QAudioFormat& ) const { return QAudioFormat(); }

    83     QString deviceName() const { return QString(); }

    84     QStringList supportedCodecs() { return QStringList(); }

    85     QList<int> supportedSampleRates()  { return QList<int>(); }

    86     QList<int> supportedChannelCounts() { return QList<int>(); }

    87     QList<int> supportedSampleSizes() { return QList<int>(); }

    88     QList<QAudioFormat::Endian> supportedByteOrders() { return QList<QAudioFormat::Endian>(); }

    89     QList<QAudioFormat::SampleType> supportedSampleTypes() { return QList<QAudioFormat::SampleType>(); }

    90 };

    91 

    92 class QNullInputDevice : public QAbstractAudioInput

    93 {

    94 public:

    95     void start(QIODevice*) { qWarning()<<"using null input device, none available";}

    96     QIODevice* start() { qWarning()<<"using null input device, none available"; return 0; }

    97     void stop() {}

    98     void reset() {}

    99     void suspend() {}

   100     void resume() {}

   101     int bytesReady() const { return 0; }

   102     int periodSize() const { return 0; }

   103     void setBufferSize(int ) {}

   104     int bufferSize() const  { return 0; }

   105     void setNotifyInterval(int ) {}

   106     int notifyInterval() const { return 0; }

   107     qint64 processedUSecs() const { return 0; }

   108     qint64 elapsedUSecs() const { return 0; }

   109     QAudio::Error error() const { return QAudio::OpenError; }

   110     QAudio::State state() const { return QAudio::StoppedState; }

   111     void setFormat(const QAudioFormat&) {}

   112     QAudioFormat format() const { return QAudioFormat(); }

   113 };

   114 

   115 class QNullOutputDevice : public QAbstractAudioOutput

   116 {

   117 public:

   118     void start(QIODevice*) {qWarning()<<"using null output device, none available";}

   119     QIODevice* start() { qWarning()<<"using null output device, none available"; return 0; }

   120     void stop() {}

   121     void reset() {}

   122     void suspend() {}

   123     void resume() {}

   124     int bytesFree() const { return 0; }

   125     int periodSize() const { return 0; }

   126     void setBufferSize(int ) {}

   127     int bufferSize() const  { return 0; }

   128     void setNotifyInterval(int ) {}

   129     int notifyInterval() const { return 0; }

   130     qint64 processedUSecs() const { return 0; }

   131     qint64 elapsedUSecs() const { return 0; }

   132     QAudio::Error error() const { return QAudio::OpenError; }

   133     QAudio::State state() const { return QAudio::StoppedState; }

   134     void setFormat(const QAudioFormat&) {}

   135     QAudioFormat format() const { return QAudioFormat(); }

   136 };

   137 

   138 QList<QAudioDeviceInfo> QAudioDeviceFactory::availableDevices(QAudio::Mode mode)

   139 {

   140     QList<QAudioDeviceInfo> devices;

   141 #ifndef QT_NO_AUDIO_BACKEND

   142 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   143     foreach (const QByteArray &handle, QAudioDeviceInfoInternal::availableDevices(mode))

   144         devices << QAudioDeviceInfo(QLatin1String("builtin"), handle, mode);

   145 #endif

   146 #endif

   147 

   148 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   149     QFactoryLoader* l = loader();

   150 

   151     foreach (QString const& key, l->keys()) {

   152         QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(l->instance(key));

   153         if (plugin) {

   154             foreach (QByteArray const& handle, plugin->availableDevices(mode))

   155                 devices << QAudioDeviceInfo(key, handle, mode);

   156         }

   157 

   158         delete plugin;

   159     }

   160 #endif

   161 

   162     return devices;

   163 }

   164 

   165 QAudioDeviceInfo QAudioDeviceFactory::defaultInputDevice()

   166 {

   167 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   168     QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(QLatin1String("default")));

   169 

   170     if (plugin) {

   171         QList<QByteArray> list = plugin->availableDevices(QAudio::AudioInput);

   172         if (list.size() > 0)

   173             return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioInput);

   174     }

   175 #endif

   176 

   177 #ifndef QT_NO_AUDIO_BACKEND

   178 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   179     return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultInputDevice(), QAudio::AudioInput);

   180 #endif

   181 #endif

   182     return QAudioDeviceInfo();

   183 }

   184 

   185 QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()

   186 {

   187 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   188     QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(QLatin1String("default")));

   189 

   190     if (plugin) {

   191         QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);

   192         if (list.size() > 0)

   193             return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput);

   194     }

   195 #endif

   196 

   197 #ifndef QT_NO_AUDIO_BACKEND

   198 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   199     return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultOutputDevice(), QAudio::AudioOutput);

   200 #endif

   201 #endif

   202     return QAudioDeviceInfo();

   203 }

   204 

   205 QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &realm, const QByteArray &handle, QAudio::Mode mode)

   206 {

   207     QAbstractAudioDeviceInfo *rc = 0;

   208 

   209 #ifndef QT_NO_AUDIO_BACKEND

   210 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   211     if (realm == QLatin1String("builtin"))

   212         return new QAudioDeviceInfoInternal(handle, mode);

   213 #endif

   214 #endif

   215 

   216 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   217     QAudioSystemFactoryInterface* plugin =

   218         qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(realm));

   219 

   220     if (plugin)

   221         rc = plugin->createDeviceInfo(handle, mode);

   222 #endif

   223 

   224     return rc == 0 ? new QNullDeviceInfo() : rc;

   225 }

   226 

   227 QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format)

   228 {

   229     return createInputDevice(defaultInputDevice(), format);

   230 }

   231 

   232 QAbstractAudioOutput* QAudioDeviceFactory::createDefaultOutputDevice(QAudioFormat const &format)

   233 {

   234     return createOutputDevice(defaultOutputDevice(), format);

   235 }

   236 

   237 QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)

   238 {

   239     if (deviceInfo.isNull())

   240         return new QNullInputDevice();

   241 #ifndef QT_NO_AUDIO_BACKEND

   242 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   243     if (deviceInfo.realm() == QLatin1String("builtin")) {

   244         QAbstractAudioInput* p = new QAudioInputPrivate(deviceInfo.handle());

   245         if (p) p->setFormat(format);

   246         return p;

   247     }

   248 #endif

   249 #endif

   250 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   251     QAudioSystemFactoryInterface* plugin =

   252         qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(deviceInfo.realm()));

   253 

   254     if (plugin) {

   255         QAbstractAudioInput* p = plugin->createInput(deviceInfo.handle());

   256         if (p) p->setFormat(format);

   257         return p;

   258     }

   259 #endif

   260 

   261     return new QNullInputDevice();

   262 }

   263 

   264 QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)

   265 {

   266     if (deviceInfo.isNull())

   267         return new QNullOutputDevice();

   268 #ifndef QT_NO_AUDIO_BACKEND

   269 #if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))

   270     if (deviceInfo.realm() == QLatin1String("builtin")) {

   271         QAbstractAudioOutput* p = new QAudioOutputPrivate(deviceInfo.handle());

   272         if (p) p->setFormat(format);

   273         return p;

   274     }

   275 #endif

   276 #endif

   277 

   278 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

   279     QAudioSystemFactoryInterface* plugin =

   280         qobject_cast<QAudioSystemFactoryInterface*>(loader()->instance(deviceInfo.realm()));

   281 

   282     if (plugin) {

   283         QAbstractAudioOutput* p = plugin->createOutput(deviceInfo.handle());

   284         if (p) p->setFormat(format);

   285         return p;

   286     }

   287 #endif

   288 

   289     return new QNullOutputDevice();

   290 }

   291 

   292 QT_END_NAMESPACE

   293