Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public:
  Play whole file in spectrum analyzer demo
  Do not unnecessarily reset state of spectrum demo
  Set SpectrumAnalyserThread parent to 0 before calling moveToThread()
  Avoid being killed by graphics out-of-memory monitor.
  Revert function renaming in QtOpenVG.
  Support tactile feedback in QWidgets from QS60Style
  Support tactile feeedback from QS60Style for QWidgets
  Making the buttons less finger unfriendly
  Readded .def file entries after a little stunt
  Do not crash on Symbian
  Temporarily remove .def file entries for a little stunt
  Fixed crash with QClipboard in Symbian^3
  Fallback to vgWritePixels in drawPixmap.

1 files changed, 29 insertions, 28 deletions

diff --git a/demos/spectrum/app/engine.h b/demos/spectrum/app/engine.h
index e14ac83..c97083e 100644
--- a/demos/spectrum/app/engine.h
+++ b/demos/spectrum/app/engine.h
@@ -91,12 +91,6 @@ public:
     QAudio::State state() const     { return m_state; }
 
     /**
-     * \return Reference to internal audio buffer
-     * \note This reference is valid for the lifetime of the Engine
-     */
-    const QByteArray& buffer() const    { return m_buffer; }
-
-    /**
      * \return Current audio format
      * \note May be QAudioFormat() if engine is not initialized
      */
@@ -129,7 +123,7 @@ public:
 
     /**
      * Position of the audio input device.
-     * \return Position in microseconds.
+     * \return Position in bytes.
      */
     qint64 recordPosition() const   { return m_recordPosition; }
 
@@ -147,27 +141,21 @@ public:
 
     /**
      * Position of the audio output device.
-     * \return Position in microseconds.
+     * \return Position in bytes.
      */
     qint64 playPosition() const     { return m_playPosition; }
 
     /**
      * Length of the internal engine buffer.
-     * \return Buffer length in microseconds.
+     * \return Buffer length in bytes.
      */
-    qint64 bufferDuration() const;
+    qint64 bufferLength() const;
 
     /**
      * Amount of data held in the buffer.
-     * \return Data duration in microseconds.
+     * \return Data length in bytes.
      */
-    qint64 dataDuration() const;
-
-    /**
-     * Returns the size of the underlying audio buffer in bytes.
-     * This should be an approximation of the capture latency.
-     */
-    qint64 audioBufferLength() const;
+    qint64 dataLength() const       { return m_dataLength; }
 
     /**
      * Set window function applied to audio data before spectral analysis.
@@ -203,23 +191,23 @@ signals:
      * Length of buffer has changed.
      * \param duration Duration in microseconds
      */
-    void bufferDurationChanged(qint64 duration);
+    void bufferLengthChanged(qint64 duration);
 
     /**
      * Amount of data in buffer has changed.
-     * \param duration Duration of data in microseconds
+     * \param Length of data in bytes
      */
-    void dataDurationChanged(qint64 duration);
+    void dataLengthChanged(qint64 duration);
 
     /**
      * Position of the audio input device has changed.
-     * \param position Position in microseconds
+     * \param position Position in bytes
      */
     void recordPositionChanged(qint64 position);
 
     /**
      * Position of the audio output device has changed.
-     * \param position Position in microseconds
+     * \param position Position in bytes
      */
     void playPositionChanged(qint64 position);
 
@@ -233,12 +221,19 @@ signals:
 
     /**
      * Spectrum has changed.
-     * \param position Position of start of window in microseconds
-     * \param length   Length of window in microseconds
+     * \param position Position of start of window in bytes
+     * \param length   Length of window in bytes
      * \param spectrum Resulting frequency spectrum
      */
     void spectrumChanged(qint64 position, qint64 length, const FrequencySpectrum &spectrum);
 
+    /**
+     * Buffer containing audio data has changed.
+     * \param position Position of start of buffer in bytes
+     * \param buffer   Buffer
+     */
+    void bufferChanged(qint64 position, qint64 length, const QByteArray &buffer);
+
 private slots:
     void audioNotify();
     void audioStateChanged(QAudio::State state);
@@ -246,6 +241,7 @@ private slots:
     void spectrumChanged(const FrequencySpectrum &spectrum);
 
 private:
+    void resetAudioDevices();
     bool initialize();
     bool selectFormat();
     void stopRecording();
@@ -275,8 +271,10 @@ private:
     bool                m_generateTone;
     SweptTone           m_tone;
 
-    QFile*              m_file;
-    WavFile             m_wavFile;
+    WavFile*            m_file;
+    // We need a second file handle via which to read data into m_buffer
+    // for analysis
+    WavFile*            m_analysisFile;
 
     QAudioFormat        m_format;
 
@@ -293,12 +291,15 @@ private:
     QBuffer             m_audioOutputIODevice;
 
     QByteArray          m_buffer;
+    qint64              m_bufferPosition;
+    qint64              m_bufferLength;
     qint64              m_dataLength;
 
+    int                 m_levelBufferLength;
     qreal               m_rmsLevel;
     qreal               m_peakLevel;
 
-    int                 m_spectrumLengthBytes;
+    int                 m_spectrumBufferLength;
     QByteArray          m_spectrumBuffer;
     SpectrumAnalyser    m_spectrumAnalyser;
     qint64              m_spectrumPosition;