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    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 QAUDIOINPUT_SYMBIAN_P_H

    54 #define QAUDIOINPUT_SYMBIAN_P_H

    55 

    56 #include <QtMultimedia/qaudioengine.h>

    57 #include <QTime>

    58 #include <QTimer>

    59 #include <sounddevice.h>

    60 #include "qaudio_symbian_p.h"

    61 

    62 QT_BEGIN_NAMESPACE

    63 

    64 class QAudioInputPrivate;

    65 

    66 class SymbianAudioInputPrivate : public QIODevice

    67 {

    68     friend class QAudioInputPrivate;

    69     Q_OBJECT

    70 public:

    71     SymbianAudioInputPrivate(QAudioInputPrivate *audio);

    72     ~SymbianAudioInputPrivate();

    73 

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

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

    76 

    77     void dataReady();

    78 

    79 private:

    80     QAudioInputPrivate *const m_audioDevice;

    81 };

    82 

    83 class QAudioInputPrivate

    84     :   public QAbstractAudioInput

    85     ,   public MDevSoundObserver

    86 {

    87     friend class SymbianAudioInputPrivate;

    88     Q_OBJECT

    89 public:

    90     QAudioInputPrivate(const QByteArray &device,

    91                       const QAudioFormat &audioFormat);

    92     ~QAudioInputPrivate();

    93 

    94     // QAbstractAudioInput

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

    96     void stop();

    97     void reset();

    98     void suspend();

    99     void resume();

   100     int bytesReady() const;

   101     int periodSize() const;

   102     void setBufferSize(int value);

   103     int bufferSize() const;

   104     void setNotifyInterval(int milliSeconds);

   105     int notifyInterval() const;

   106     qint64 processedUSecs() const;

   107     qint64 elapsedUSecs() const;

   108     QAudio::Error error() const;

   109     QAudio::State state() const;

   110     QAudioFormat format() const;

   111 

   112     // MDevSoundObserver

   113     void InitializeComplete(TInt aError);

   114     void ToneFinished(TInt aError);

   115     void BufferToBeFilled(CMMFBuffer *aBuffer);

   116     void PlayError(TInt aError);

   117     void BufferToBeEmptied(CMMFBuffer *aBuffer);

   118     void RecordError(TInt aError);

   119     void ConvertError(TInt aError);

   120     void DeviceMessage(TUid aMessageType, const TDesC8 &aMsg);

   121 

   122 private slots:

   123     void pullData();

   124 

   125 private:

   126    void open();

   127    void startRecording();

   128    void startDevSoundL();

   129    void startDataTransfer();

   130    CMMFDataBuffer* currentBuffer() const;

   131    void pushData();

   132    qint64 read(char *data, qint64 len);

   133    void bufferEmptied();

   134    Q_INVOKABLE void close();

   135 

   136    qint64 getSamplesRecorded() const;

   137 

   138    void setError(QAudio::Error error);

   139    void setState(SymbianAudio::State state);

   140 

   141    QAudio::State initializingState() const;

   142 

   143 private:

   144     const QByteArray m_device;

   145     const QAudioFormat m_format;

   146 

   147     int m_clientBufferSize;

   148     int m_notifyInterval;

   149     QScopedPointer<QTimer> m_notifyTimer;

   150     QTime m_elapsed;

   151     QAudio::Error m_error;

   152 

   153     SymbianAudio::State m_internalState;

   154     QAudio::State m_externalState;

   155 

   156     bool m_pullMode;

   157     QIODevice *m_sink;

   158 

   159     QScopedPointer<QTimer> m_pullTimer;

   160 

   161     QScopedPointer<CMMFDevSound> m_devSound;

   162     TUint32 m_nativeFourCC;

   163     TMMFCapabilities m_nativeFormat;

   164 

   165     // Latest buffer provided by DevSound, to be empied of data.

   166     CMMFDataBuffer *m_devSoundBuffer;

   167 

   168     int m_devSoundBufferSize;

   169 

   170     // Total amount of data in buffers provided by DevSound

   171     int m_totalBytesReady;

   172 

   173     // Queue of buffers returned after call to CMMFDevSound::Pause().

   174     QList<CMMFDataBuffer *> m_devSoundBufferQ;

   175 

   176     // Current read position within m_devSoundBuffer

   177     qint64 m_devSoundBufferPos;

   178 

   179     // Samples recorded up to the last call to suspend().  It is necessary

   180     // to cache this because suspend() is implemented using

   181     // CMMFDevSound::Stop(), which resets DevSound's SamplesRecorded() counter.

   182     quint32 m_totalSamplesRecorded;

   183 

   184 };

   185 

   186 QT_END_NAMESPACE

   187 

   188 #endif