1 /***************************************************************************
2 * Copyright (C) 2012 by Simon Andreas Eugster (simon.eu@gmail.com) *
3 * This file is part of kdenlive. See www.kdenlive.org. *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 ***************************************************************************/
11 #ifndef AUDIOCORRELATION_H
12 #define AUDIOCORRELATION_H
14 #include "audioCorrelationInfo.h"
15 #include "audioEnvelope.h"
20 This class does the correlation between two tracks
21 in order to synchronize (align) them.
23 It uses one main track (used in the initializer); further tracks will be
24 aligned relative to this main track.
26 class AudioCorrelation
29 /// AudioCorrelation will take ownership of mainTrackEnvelope
30 AudioCorrelation(AudioEnvelope *mainTrackEnvelope);
34 This object will take ownership of the passed envelope.
35 \return The child's index
37 int addChild(AudioEnvelope *envelope, bool useFFT = false);
39 const AudioCorrelationInfo *info(int childIndex) const;
40 int getShift(int childIndex) const;
43 Correlates the two vectors envMain and envSub.
44 \c correlation must be a pre-allocated vector of size sizeMain+sizeSub+1.
46 static void correlate(const int64_t *envMain, int sizeMain,
47 const int64_t *envSub, int sizeSub,
49 int64_t *out_max = NULL);
51 AudioEnvelope *m_mainTrackEnvelope;
53 QList<AudioEnvelope*> m_children;
54 QList<AudioCorrelationInfo*> m_correlations;
57 #endif // AUDIOCORRELATION_H