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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

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

     6 **

     7 ** This file is part of the QtMultimedia module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    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

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

    20 ** packaging of this file.  Please review the following information to

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

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

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

    41 

    42 //

    43 //  W A R N I N G

    44 //  -------------

    45 //

    46 // This file is not part of the Qt API.  It exists for the convenience

    47 // of other Qt classes.  This header file may change from version to

    48 // version without notice, or even be removed.

    49 //

    50 // We mean it.

    51 //

    52 

    53 #ifndef QAUDIOOUTPUTWIN_H

    54 #define QAUDIOOUTPUTWIN_H

    55 

    56 #include <windows.h>

    57 #include <mmsystem.h>

    58 

    59 #include <QtCore/qdebug.h>

    60 #include <QtCore/qtimer.h>

    61 #include <QtCore/qstring.h>

    62 #include <QtCore/qstringlist.h>

    63 #include <QtCore/qdatetime.h>

    64 

    65 #include <QtMultimedia/qaudio.h>

    66 #include <QtMultimedia/qaudiodeviceinfo.h>

    67 #include <QtMultimedia/qaudioengine.h>

    68 

    69 

    70 QT_BEGIN_NAMESPACE

    71 

    72 class QAudioOutputPrivate : public QAbstractAudioOutput

    73 {

    74     Q_OBJECT

    75 public:

    76     QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);

    77     ~QAudioOutputPrivate();

    78 

    79     qint64 write( const char *data, qint64 len );

    80 

    81     QAudioFormat format() const;

    82     QIODevice* start(QIODevice* device = 0);

    83     void stop();

    84     void reset();

    85     void suspend();

    86     void resume();

    87     int bytesFree() const;

    88     int periodSize() const;

    89     void setBufferSize(int value);

    90     int bufferSize() const;

    91     void setNotifyInterval(int milliSeconds);

    92     int notifyInterval() const;

    93     qint64 totalTime() const;

    94     qint64 clock() const;

    95     QAudio::Error error() const;

    96     QAudio::State state() const;

    97 

    98     QIODevice* audioSource;

    99     QAudioFormat settings;

   100     QAudio::Error errorState;

   101     QAudio::State deviceState;

   102 

   103 private slots:

   104     void feedback();

   105     bool deviceReady();

   106 

   107 private:

   108     QByteArray m_device;

   109     bool resuming;

   110     int bytesAvailable;

   111     QTime timeStamp;

   112     qint64 elapsedTimeOffset;

   113     QTime timeStampOpened;

   114     qint32 buffer_size;

   115     qint32 period_size;

   116     qint64 totalTimeValue;

   117     bool pullMode;

   118     int intervalTime;

   119     static void CALLBACK waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,

   120             DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );

   121 

   122     WAVEHDR* allocateBlocks(int size, int count);

   123     void freeBlocks(WAVEHDR* blockArray);

   124     bool open();

   125     void close();

   126 

   127     WAVEFORMATEX wfx;

   128     HWAVEOUT hWaveOut;

   129     MMRESULT result;

   130     WAVEHDR header;

   131     WAVEHDR* waveBlocks;

   132     volatile bool finished;

   133     volatile int waveFreeBlockCount;

   134     int waveCurrentBlock;

   135     char* audioBuffer;

   136 };

   137 

   138 class OutputPrivate : public QIODevice

   139 {

   140     Q_OBJECT

   141 public:

   142     OutputPrivate(QAudioOutputPrivate* audio);

   143     ~OutputPrivate();

   144 

   145     qint64 readData( char* data, qint64 len);

   146     qint64 writeData(const char* data, qint64 len);

   147 

   148 private:

   149     QAudioOutputPrivate *audioDevice;

   150 };

   151 

   152 QT_END_NAMESPACE

   153 

   154 #endif