File indexing completed on 2024-04-28 04:51:59

0001 /*
0002     SPDX-FileCopyrightText: 2012 Simon Andreas Eugster <simon.eu@gmail.com>
0003     This file is part of kdenlive. See www.kdenlive.org.
0004 
0005 SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0006 */
0007 
0008 #pragma once
0009 
0010 #include <QImage>
0011 
0012 #include <sys/types.h>
0013 
0014 /**
0015   This class holds the correlation of two audio samples.
0016   It is mainly a container for data, the correlation itself is calculated
0017   in the class AudioCorrelation.
0018   */
0019 class AudioCorrelationInfo
0020 {
0021 public:
0022     AudioCorrelationInfo(size_t mainSize, size_t subSize);
0023     ~AudioCorrelationInfo();
0024 
0025     size_t size() const;
0026     qint64 *correlationVector();
0027     qint64 const *correlationVector() const;
0028 
0029     /**
0030       Returns the maximum value in the correlation vector.
0031       If it has not been set before with setMax(), it will be calculated.
0032       */
0033     qint64 max() const;
0034     void setMax(qint64 max); ///< Can be set to avoid calculating the max again in this function
0035 
0036     /**
0037       Returns the index of the largest value in the correlation vector
0038       */
0039     size_t maxIndex() const;
0040 
0041     QImage toImage(size_t height = 400) const;
0042 
0043 private:
0044     size_t m_mainSize;
0045     size_t m_subSize;
0046 
0047     qint64 *m_correlationVector;
0048     qint64 m_max;
0049 };