Audio decoder example.

Change-Id: I0f9fb755ef8bc6f66696a06996ac7a9f13de69cc Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
2012-02-24 13:00:35 +10:00
parent 5ed255ead6
commit c9b3f247c7
6 changed files with 647 additions and 0 deletions
--- a/examples/audiodecoder/audiodecoder.h
+++ b/examples/audiodecoder/audiodecoder.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef AUDIODECODER_H
+#define AUDIODECODER_H
+
+#include <private/qaudiodecoder_p.h>
+#include "wavefilewriter.h"
+#include <QSoundEffect>
+#include <QTextStream>
+
+QT_USE_NAMESPACE
+
+class AudioDecoder : public QObject
+{
+    Q_OBJECT
+public:
+    AudioDecoder(bool isPlayback, bool isDelete);
+    ~AudioDecoder() { }
+
+    void setSourceFilename(const QString &fileName);
+    void start();
+    void stop();
+
+    void setTargetFilename(const QString &fileName);
+
+Q_SIGNALS:
+    void done();
+
+public slots:
+    void bufferReady();
+    void error(QAudioDecoder::Error error);
+    void stateChanged(QAudioDecoder::State newState);
+    void finished();
+
+    void playbackStatusChanged();
+    void playingChanged();
+
+private slots:
+    void updateProgress();
+
+private:
+    bool m_isPlayback;
+    bool m_isDelete;
+    QAudioDecoder m_decoder;
+    QTextStream m_cout;
+
+    QString m_targetFilename;
+    WaveFileWriter m_fileWriter;
+    QSoundEffect m_soundEffect;
+
+    qreal m_progress;
+};
+
+#endif // AUDIODECODER_H