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#include "waveformrendererfilteredsignal.h"
#include "waveformwidgetrenderer.h"
#include "waveform/waveform.h"
#include "waveform/waveformwidgetfactory.h"
#include "control/controlproxy.h"
#include "widget/wskincolor.h"
#include "track/track.h"
#include "widget/wwidget.h"
#include "util/math.h"
WaveformRendererFilteredSignal::WaveformRendererFilteredSignal(
WaveformWidgetRenderer* waveformWidgetRenderer)
: WaveformRendererSignalBase(waveformWidgetRenderer) {
}
WaveformRendererFilteredSignal::~WaveformRendererFilteredSignal() {
}
void WaveformRendererFilteredSignal::onResize() {
m_lowLines.resize(m_waveformRenderer->getLength());
m_midLines.resize(m_waveformRenderer->getLength());
m_highLines.resize(m_waveformRenderer->getLength());
}
void WaveformRendererFilteredSignal::onSetup(const QDomNode& node) {
Q_UNUSED(node);
}
void WaveformRendererFilteredSignal::draw(QPainter* painter,
QPaintEvent* /*event*/) {
const TrackPointer trackInfo = m_waveformRenderer->getTrackInfo();
if (!trackInfo) {
return;
}
ConstWaveformPointer waveform = trackInfo->getWaveform();
if (waveform.isNull()) {
return;
}
const int dataSize = waveform->getDataSize();
if (dataSize <= 1) {
return;
}
const WaveformData* data = waveform->data();
if (data == NULL) {
return;
}
painter->save();
painter->setRenderHints(QPainter::Antialiasing, false);
painter->setRenderHints(QPainter::SmoothPixmapTransform, false);
painter->setWorldMatrixEnabled(false);
painter->resetTransform();
// Rotate if drawing vertical waveforms
if (m_waveformRenderer->getOrientation() == Qt::Vertical) {
painter->setTransform(QTransform(0, 1, 1, 0, 0, 0));
}
const double firstVisualIndex = m_waveformRenderer->getFirstDisplayedPosition() * dataSize;
const double lastVisualIndex = m_waveformRenderer->getLastDisplayedPosition() * dataSize;
// Represents the # of waveform data points per horizontal pixel.
const double gain = (lastVisualIndex - firstVisualIndex) /
(double)m_waveformRenderer->getLength();
// Per-band gain from the EQ knobs.
float allGain(1.0), lowGain(1.0), midGain(1.0), highGain(1.0);
getGains(&allGain, &lowGain, &midGain, &highGain);
const float breadth = m_waveformRenderer->getBreadth();
const float halfBreadth = breadth / 2.0;
const float heightFactor = m_alignment == Qt::AlignCenter
? allGain*halfBreadth/255.0
: allGain*m_waveformRenderer->getBreadth()/255.0;
//draw reference line
if (m_alignment == Qt::AlignCenter) {
painter->setPen(m_pColors->getAxesColor());
painter->drawLine(0, halfBreadth, m_waveformRenderer->getLength(), halfBreadth);
}
int actualLowLineNumber = 0;
int actualMidLineNumber = 0;
int actualHighLineNumber = 0;
for (int x = 0; x < m_waveformRenderer->getLength(); ++x) {
// Width of the x position in visual indices.
const double xSampleWidth = gain * x;
// Effective visual index of x
const double xVisualSampleIndex = xSampleWidth + firstVisualIndex;
// Our current pixel (x) corresponds to a number of visual samples
// (visualSamplerPerPixel) in our waveform object. We take the max of
// all the data points on either side of xVisualSampleIndex within a
// window of 'maxSamplingRange' visual samples to measure the maximum
// data point contained by this pixel.
double maxSamplingRange = gain / 2.0;
// Since xVisualSampleIndex is in visual-samples (e.g. R,L,R,L) we want
// to check +/- maxSamplingRange frames, not samples. To do this, divide
// xVisualSampleIndex by 2. Since frames indices are integers, we round
// to the nearest integer by adding 0.5 before casting to int.
int visualFrameStart = int(xVisualSampleIndex / 2.0 - maxSamplingRange + 0.5);
int visualFrameStop = int(xVisualSampleIndex / 2.0 + maxSamplingRange + 0.5);
// If the entire sample range is off the screen then don't calculate a
// point for this pixel.
const int lastVisualFrame = dataSize / 2 - 1;
if (visualFrameStop < 0 || visualFrameStart > lastVisualFrame) {
continue;
}
// We now know that some subset of [visualFrameStart, visualFrameStop]
// lies within the valid range of visual frames. Clamp
// visualFrameStart/Stop to within [0, lastVisualFrame].
visualFrameStart = math_clamp(visualFrameStart, 0, lastVisualFrame);
visualFrameStop = math_clamp(visualFrameStop, 0, lastVisualFrame);
int visualIndexStart = visualFrameStart * 2;
int visualIndexStop = visualFrameStop * 2;
// if (x == m_waveformRenderer->getLength() / 2) {
// qDebug() << "audioVisualRatio" << waveform->getAudioVisualRatio();
// qDebug() << "visualSampleRate" << waveform->getVisualSampleRate();
// qDebug() << "audioSamplesPerVisualPixel" << waveform->getAudioSamplesPerVisualSample();
// qDebug() << "visualSamplePerPixel" << visualSamplePerPixel;
// qDebug() << "xSampleWidth" << xSampleWidth;
// qDebug() << "xVisualSampleIndex" << xVisualSampleIndex;
// qDebug() << "maxSamplingRange" << maxSamplingRange;;
// qDebug() << "Sampling pixel " << x << "over [" << visualIndexStart << visualIndexStop << "]";
// }
unsigned char maxLow[2] = {0, 0};
unsigned char maxMid[2] = {0, 0};
unsigned char maxHigh[2] = {0, 0};
for (int i = visualIndexStart;
i >= 0 && i + 1 < dataSize && i + 1 <= visualIndexStop; i += 2) {
const WaveformData& waveformData = *(data + i);
const WaveformData& waveformDataNext = *(data + i + 1);
maxLow[0] = math_max(maxLow[0], waveformData.filtered.low);
maxLow[1] = math_max(maxLow[1], waveformDataNext.filtered.low);
maxMid[0] = math_max(maxMid[0], waveformData.filtered.mid);
maxMid[1] = math_max(maxMid[1], waveformDataNext.filtered.mid);
maxHigh[0] = math_max(maxHigh[0], waveformData.filtered.high);
maxHigh[1] = math_max(maxHigh[1], waveformDataNext.filtered.high);
}
if (maxLow[0] && maxLow[1]) {
switch (m_alignment) {
case Qt::AlignBottom :
case Qt::AlignRight :
m_lowLines[actualLowLineNumber].setLine(
x, breadth,
x, breadth - (int)(heightFactor*lowGain*(float)math_max(maxLow[0],maxLow[1])));
break;
case Qt::AlignTop :
case Qt::AlignLeft :
m_lowLines[actualLowLineNumber].setLine(
x, 0,
x, (int)(heightFactor*lowGain*(float)math_max(maxLow[0],maxLow[1])));
break;
default :
m_lowLines[actualLowLineNumber].setLine(
x, (int)(halfBreadth-heightFactor*(float)maxLow[0]*lowGain),
x, (int)(halfBreadth+heightFactor*(float)maxLow[1]*lowGain));
break;
}
actualLowLineNumber++;
}
if (maxMid[0] && maxMid[1]) {
switch (m_alignment) {
case Qt::AlignBottom :
case Qt::AlignRight :
m_midLines[actualMidLineNumber].setLine(
x, breadth,
x, breadth - (int)(heightFactor*midGain*(float)math_max(maxMid[0],maxMid[1])));
break;
case Qt::AlignTop :
case Qt::AlignLeft :
m_midLines[actualMidLineNumber].setLine(
x, 0,
x, (int)(heightFactor*midGain*(float)math_max(maxMid[0],maxMid[1])));
break;
default :
m_midLines[actualMidLineNumber].setLine(
x, (int)(halfBreadth-heightFactor*(float)maxMid[0]*midGain),
x, (int)(halfBreadth+heightFactor*(float)maxMid[1]*midGain));
break;
}
actualMidLineNumber++;
}
if (maxHigh[0] && maxHigh[1]) {
switch (m_alignment) {
case Qt::AlignBottom :
case Qt::AlignRight :
m_highLines[actualHighLineNumber].setLine(
x, breadth,
x, breadth - (int)(heightFactor*highGain*(float)math_max(maxHigh[0],maxHigh[1])));
break;
case Qt::AlignTop :
case Qt::AlignLeft :
m_highLines[actualHighLineNumber].setLine(
x, 0,
x, (int)(heightFactor*highGain*(float)math_max</
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