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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// 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.
+//
+
+#ifndef QAUDIOOUTPUTALSA_H
+#define QAUDIOOUTPUTALSA_H
+
+#include <alsa/asoundlib.h>
+
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+class OutputPrivate;
+
+class QAudioOutputPrivate : public QAbstractAudioOutput
+{
+ friend class OutputPrivate;
+ Q_OBJECT
+public:
+ QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+ ~QAudioOutputPrivate();
+
+ qint64 write( const char *data, qint64 len );
+
+ QIODevice* start(QIODevice* device = 0);
+ void stop();
+ void reset();
+ void suspend();
+ void resume();
+ int bytesFree() const;
+ int periodSize() const;
+ void setBufferSize(int value);
+ int bufferSize() const;
+ void setNotifyInterval(int milliSeconds);
+ int notifyInterval() const;
+ qint64 totalTime() const;
+ qint64 clock() const;
+ QAudio::Error error() const;
+ QAudio::State state() const;
+ QAudioFormat format() const;
+
+ QIODevice* audioSource;
+ QAudioFormat settings;
+ QAudio::Error errorState;
+ QAudio::State deviceState;
+
+private slots:
+ void userFeed();
+ void feedback();
+ void updateAvailable();
+ bool deviceReady();
+
+signals:
+ void processMore();
+
+private:
+ bool opened;
+ bool pullMode;
+ bool resuming;
+ int buffer_size;
+ int period_size;
+ int intervalTime;
+ qint64 totalTimeValue;
+ unsigned int buffer_time;
+ unsigned int period_time;
+ snd_pcm_uframes_t buffer_frames;
+ snd_pcm_uframes_t period_frames;
+ static void async_callback(snd_async_handler_t *ahandler);
+ int xrun_recovery(int err);
+
+ int setFormat();
+ bool open();
+ void close();
+
+ QTimer* timer;
+ QByteArray m_device;
+ int bytesAvailable;
+ QTime timeStamp;
+ char* audioBuffer;
+ snd_pcm_t* handle;
+ snd_async_handler_t* ahandler;
+ snd_pcm_access_t access;
+ snd_pcm_format_t pcmformat;
+ snd_timestamp_t* timestamp;
+ snd_pcm_hw_params_t *hwparams;
+};
+
+class OutputPrivate : public QIODevice
+{
+ friend class QAudioOutputPrivate;
+ Q_OBJECT
+public:
+ OutputPrivate(QAudioOutputPrivate* audio);
+ ~OutputPrivate();
+
+ qint64 readData( char* data, qint64 len);
+ qint64 writeData(const char* data, qint64 len);
+
+private:
+ QAudioOutputPrivate *audioDevice;
+};
+
+#endif