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

 /*
     SPDX-FileCopyrightText: 2012 Simon Andreas Eugster <simon.eu@gmail.com>
     This file is part of kdenlive. See www.kdenlive.org.
 
 SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #include "audioCorrelationInfo.h"
 
 AudioCorrelationInfo::AudioCorrelationInfo(size_t mainSize, size_t subSize)
     : m_mainSize(mainSize)
     , m_subSize(subSize)
     , m_max(-1)
 {
     m_correlationVector = new qint64[m_mainSize + m_subSize + 1];
 }
 
 AudioCorrelationInfo::~AudioCorrelationInfo()
 {
     delete[] m_correlationVector;
 }
 
 size_t AudioCorrelationInfo::size() const
 {
     return m_mainSize + m_subSize + 1;
 }
 
 void AudioCorrelationInfo::setMax(qint64 max)
 {
     m_max = max;
 }
 
 qint64 AudioCorrelationInfo::max() const
 {
     if (m_max <= 0) {
         size_t width = size();
         qint64 max = 0;
         for (size_t i = 0; i < width; ++i) {
             if (m_correlationVector[i] > max) {
                 max = m_correlationVector[i];
             }
         }
         Q_ASSERT(max > 0);
         return max;
     }
     return m_max;
 }
 
 size_t AudioCorrelationInfo::maxIndex() const
 {
     qint64 max = 0;
     size_t index = 0;
     size_t width = size();
 
     for (size_t i = 0; i < width; ++i) {
         if (m_correlationVector[i] > max) {
             max = m_correlationVector[i];
             index = i;
         }
     }
 
     return index;
 }
 
 qint64 *AudioCorrelationInfo::correlationVector()
 {
     return m_correlationVector;
 }
 
 QImage AudioCorrelationInfo::toImage(size_t height) const
 {
     size_t width = size();
     qint64 maxVal = max();
 
     QImage img(int(width), int(height), QImage::Format_ARGB32);
     img.fill(qRgb(255, 255, 255));
 
     if (maxVal == 0) {
         return img;
     }
 
     for (int x = 0; x < int(width); ++x) {
         int val = img.height() * int(m_correlationVector[x] / maxVal);
         for (int y = img.height() - 1; y > img.height() - val - 1; --y) {
             img.setPixel(x, y, qRgb(50, 50, 50));
         }
     }
 
     return img;
 }