void Record::createWaveFormPic(Ffmpeg_t *ffmpeg, QString recortPath) {
std::pair<std::vector<double>, std::vector<double> > dataWaveForm = ffmpeg->getSamplesForWaveformPlotting(recortPath + "/" + m_Name);
QCustomPlot Plotter;
Plotter.setBackground(QBrush(Qt::transparent) );
Plotter.xAxis->setVisible(false);
Plotter.yAxis->setVisible(false);
Plotter.axisRect()->setAutoMargins(QCP::msNone);
Plotter.axisRect()->setMargins(QMargins(0, 5, 0, 5));
QCPGraph *Waveform = Plotter.addGraph();
Waveform->setPen(QPen(Qt::green) );
if (!Waveform)
{
qDebug("addGraph failed\n");
}
QVector<double> Amplitudes(QVector<double>::fromStdVector(dataWaveForm.first) );
QVector<double> Time;
double CurrentTime = 0;
auto TimeSlotCount = Amplitudes.size();
for (int64_t i = 1; i < TimeSlotCount; i++)
{
Time.append(CurrentTime);
CurrentTime += 0.5;
}
Waveform->setData(Time, Amplitudes);
Plotter.xAxis->setRange(0, Time.back() );
Plotter.yAxis->setRange(SHRT_MIN, SHRT_MAX);
QByteArray ByteArray;
QBuffer Buffer(&ByteArray);
Buffer.open(QBuffer::WriteOnly);
uint32_t time = m_EndTime - m_StartTime;
for (int i = 1; i < 10000; i*=10) {
Plotter.toPixmap(time/(i), this->height()).save(&Buffer, "PNG", 0);
//Plotter.saveJpg(recortPath + "/plot" + QString::number(m_Id) + QString::number(i) + ".jpg", time/(i), this->height());
QPixmap Pixmap;
Pixmap.loadFromData(ByteArray, "PNG");
v_PixWaves.append(Pixmap);
ByteArray.clear();
Buffer.reset();
}
Buffer.close();
qDebug() << m_WavePic->margin();
// místo 2 podle toho jaký zoom
m_WavePic->setPixmap(v_PixWaves[2]);
}
