--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/multimedia/audio/qaudiooutput_symbian_p.h Mon May 03 13:17:34 2010 +0300
@@ -0,0 +1,210 @@
+/****************************************************************************
+**
+** 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 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// 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 QAUDIOOUTPUT_SYMBIAN_P_H
+#define QAUDIOOUTPUT_SYMBIAN_P_H
+
+#include <QtMultimedia/qaudioengine.h>
+#include <QTime>
+#include <QTimer>
+#include <sounddevice.h>
+#include "qaudio_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QAudioOutputPrivate;
+
+class SymbianAudioOutputPrivate : public QIODevice
+{
+ friend class QAudioOutputPrivate;
+ Q_OBJECT
+public:
+ SymbianAudioOutputPrivate(QAudioOutputPrivate *audio);
+ ~SymbianAudioOutputPrivate();
+
+ qint64 readData(char *data, qint64 len);
+ qint64 writeData(const char *data, qint64 len);
+
+private:
+ QAudioOutputPrivate *const m_audioDevice;
+};
+
+class QAudioOutputPrivate
+ : public QAbstractAudioOutput
+ , public MDevSoundObserver
+{
+ friend class SymbianAudioOutputPrivate;
+ Q_OBJECT
+public:
+ QAudioOutputPrivate(const QByteArray &device,
+ const QAudioFormat &audioFormat);
+ ~QAudioOutputPrivate();
+
+ // QAbstractAudioOutput
+ 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 processedUSecs() const;
+ qint64 elapsedUSecs() const;
+ QAudio::Error error() const;
+ QAudio::State state() const;
+ QAudioFormat format() const;
+
+ // MDevSoundObserver
+ void InitializeComplete(TInt aError);
+ void ToneFinished(TInt aError);
+ void BufferToBeFilled(CMMFBuffer *aBuffer);
+ void PlayError(TInt aError);
+ void BufferToBeEmptied(CMMFBuffer *aBuffer);
+ void RecordError(TInt aError);
+ void ConvertError(TInt aError);
+ void DeviceMessage(TUid aMessageType, const TDesC8 &aMsg);
+
+private slots:
+ void dataReady();
+ void underflowTimerExpired();
+
+private:
+ void open();
+ void startPlayback();
+ void startDevSoundL();
+ void writePaddingData();
+ qint64 pushData(const char *data, qint64 len);
+ void pullData();
+ void bufferFilled();
+ void lastBufferFilled();
+ Q_INVOKABLE void close();
+
+ qint64 getSamplesPlayed() const;
+
+ void setError(QAudio::Error error);
+ void setState(SymbianAudio::State state);
+
+ bool isDataReady() const;
+ QAudio::State initializingState() const;
+
+private:
+ const QByteArray m_device;
+ const QAudioFormat m_format;
+
+ int m_clientBufferSize;
+ int m_notifyInterval;
+ QScopedPointer<QTimer> m_notifyTimer;
+ QTime m_elapsed;
+ QAudio::Error m_error;
+
+ SymbianAudio::State m_internalState;
+ QAudio::State m_externalState;
+
+ bool m_pullMode;
+ QIODevice *m_source;
+
+ QScopedPointer<CMMFDevSound> m_devSound;
+ TUint32 m_nativeFourCC;
+ TMMFCapabilities m_nativeFormat;
+
+ // Buffer provided by DevSound, to be filled with data.
+ CMMFDataBuffer *m_devSoundBuffer;
+
+ int m_devSoundBufferSize;
+
+ // Number of bytes transferred from QIODevice to QAudioOutput. It is
+ // necessary to count this because data is dropped when suspend() is
+ // called. The difference between the position reported by DevSound and
+ // this value allows us to calculate m_bytesPadding;
+ quint32 m_bytesWritten;
+
+ // True if client has provided data while the audio subsystem was not
+ // ready to consume it.
+ bool m_pushDataReady;
+
+ // Number of zero bytes which will be written when client calls resume().
+ quint32 m_bytesPadding;
+
+ // True if PlayError(KErrUnderflow) has been called.
+ bool m_underflow;
+
+ // True if a buffer marked with the "last buffer" flag has been provided
+ // to DevSound.
+ bool m_lastBuffer;
+
+ // Some DevSound implementations ignore all underflow errors raised by the
+ // audio driver, unless the last buffer flag has been set by the client.
+ // In push-mode playback, this flag will never be set, so the underflow
+ // error will never be reported. In order to work around this, a timer
+ // is used, which gets reset every time the client provides more data. If
+ // the timer expires, an underflow error is raised by this object.
+ QScopedPointer<QTimer> m_underflowTimer;
+
+ // Result of previous call to CMMFDevSound::SamplesPlayed(). This value is
+ // used to determine whether, when m_underflowTimer expires, an
+ // underflow error has actually occurred.
+ quint32 m_samplesPlayed;
+
+ // Samples played up to the last call to suspend(). It is necessary
+ // to cache this because suspend() is implemented using
+ // CMMFDevSound::Stop(), which resets DevSound's SamplesPlayed() counter.
+ quint32 m_totalSamplesPlayed;
+
+};
+
+QT_END_NAMESPACE
+
+#endif