60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
#include "effects/effects.h"
|
|
|
|
#include <QGridLayout>
|
|
#include <QLabel>
|
|
#include <QtMath>
|
|
#include <QDebug>
|
|
#include <stdint.h>
|
|
|
|
#include "ui/labelslider.h"
|
|
#include "ui/collapsiblewidget.h"
|
|
|
|
VolumeEffect::VolumeEffect(Clip* c) : Effect(c, EFFECT_TYPE_AUDIO, AUDIO_VOLUME_EFFECT) {
|
|
ui_layout->addWidget(new QLabel("Volume:"), 0, 0);
|
|
volume_val = new LabelSlider();
|
|
volume_val->set_minimum_value(0);
|
|
volume_val->set_maximum_value(400);
|
|
ui_layout->addWidget(volume_val, 0, 1);
|
|
|
|
// set defaults
|
|
volume_val->set_value(100);
|
|
}
|
|
|
|
Effect* VolumeEffect::copy(Clip* c) {
|
|
VolumeEffect* v = new VolumeEffect(c);
|
|
v->volume_val->set_value(volume_val->value());
|
|
return v;
|
|
}
|
|
|
|
void VolumeEffect::load(QXmlStreamReader* stream) {
|
|
while (!(stream->isEndElement() && stream->name() == "effect") && !stream->atEnd()) {
|
|
stream->readNext();
|
|
if (stream->isStartElement() && stream->name() == "volume") {
|
|
stream->readNext();
|
|
volume_val->set_value(stream->text().toFloat());
|
|
}
|
|
}
|
|
}
|
|
|
|
void VolumeEffect::save(QXmlStreamWriter* stream) {
|
|
stream->writeTextElement("volume", QString::number(volume_val->value()));
|
|
}
|
|
|
|
void VolumeEffect::process_audio(quint8* samples, int nb_bytes) {
|
|
if (volume_val->value() != 100) {
|
|
for (int i=0;i<nb_bytes;i+=2) {
|
|
qint32 samp = (qint16) (((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
|
|
double val = qPow(volume_val->value()*0.01, 3);
|
|
samp *= val;
|
|
if (samp > INT16_MAX) {
|
|
samp = INT16_MAX;
|
|
} else if (samp < INT16_MIN) {
|
|
samp = INT16_MIN;
|
|
}
|
|
|
|
samples[i+1] = (quint8) (samp >> 8);
|
|
samples[i] = (quint8) samp;
|
|
}
|
|
}
|
|
}
|