Audio envelope calculation extracted into own class, mean and standard deviation...

[kdenlive] / testingArea / audioEnvelope.h

diff --git a/testingArea/audioEnvelope.h b/testingArea/audioEnvelope.h
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+++ b/testingArea/audioEnvelope.h
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+/***************************************************************************
+ *   Copyright (C) 2012 by Simon Andreas Eugster (simon.eu@gmail.com)      *
+ *   This file is part of kdenlive. See www.kdenlive.org.                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#ifndef AUDIOENVELOPE_H
+#define AUDIOENVELOPE_H
+
+#include "audioInfo.h"
+#include <mlt++/Mlt.h>
+
+class QImage;
+class AudioEnvelope
+{
+public:
+    AudioEnvelope(Mlt::Producer *producer);
+    ~AudioEnvelope();
+
+    void loadEnvelope();
+    int64_t loadStdDev();
+
+    QImage drawEnvelope();
+
+    void dumpInfo() const;
+
+private:
+    uint64_t *m_envelope;
+    Mlt::Producer *m_producer;
+    AudioInfo *m_info;
+
+    int m_envelopeSize;
+    uint64_t m_envelopeMax;
+    uint64_t m_envelopeMean;
+    uint64_t m_envelopeStdDev;
+
+    bool m_envelopeStdDevCalculated;
+};
+
+#endif // AUDIOENVELOPE_H