changehslelement.cpp
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/* Webcamoid, webcam capture application.
* Copyright (C) 2016 Gonzalo Exequiel Pedone
*
* Webcamoid is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Webcamoid is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Webcamoid. If not, see <http://www.gnu.org/licenses/>.
*
* Web-Site: http://webcamoid.github.io/
*/
#include <QColor>
#include <QQmlContext>
#include <QVariant>
#include <akfrac.h>
#include <akpacket.h>
#include <akvideocaps.h>
#include <akvideoconverter.h>
#include <akvideopacket.h>
#include "changehslelement.h"
class ChangeHSLElementPrivate
{
public:
QVector<qreal> m_kernel;
AkVideoConverter m_videoConverter {{AkVideoCaps::Format_argbpack, 0, 0, {}}};
};
ChangeHSLElement::ChangeHSLElement(): AkElement()
{
this->d = new ChangeHSLElementPrivate;
this->d->m_kernel = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0
};
}
ChangeHSLElement::~ChangeHSLElement()
{
delete this->d;
}
QVariantList ChangeHSLElement::kernel() const
{
QVariantList kernel;
for (auto &e: this->d->m_kernel)
kernel << e;
return kernel;
}
QString ChangeHSLElement::controlInterfaceProvide(const QString &controlId) const
{
Q_UNUSED(controlId)
return QString("qrc:/ChangeHSL/share/qml/main.qml");
}
void ChangeHSLElement::controlInterfaceConfigure(QQmlContext *context,
const QString &controlId) const
{
Q_UNUSED(controlId)
context->setContextProperty("ChangeHSL", const_cast<QObject *>(qobject_cast<const QObject *>(this)));
context->setContextProperty("controlId", this->objectName());
}
AkPacket ChangeHSLElement::iVideoStream(const AkVideoPacket &packet)
{
if (this->d->m_kernel.size() < 12) {
if (packet)
emit this->oStream(packet);
return packet;
}
this->d->m_videoConverter.begin();
auto src = this->d->m_videoConverter.convert(packet);
this->d->m_videoConverter.end();
if (!src)
return packet;
AkVideoPacket dst(src.caps());
dst.copyMetadata(src);
auto kernel = this->d->m_kernel.constData();
for (int y = 0; y < src.caps().height(); y++) {
auto srcLine = reinterpret_cast<const QRgb *>(src.constLine(0, y));
auto dstLine = reinterpret_cast<QRgb *>(dst.line(0, y));
for (int x = 0; x < src.caps().width(); x++) {
auto &pixel = srcLine[x];
int h;
int s;
int l;
int a;
QColor(qRed(pixel),
qGreen(pixel),
qBlue(pixel),
qAlpha(pixel)).getHsl(&h, &s, &l, &a);
int ht = int(h * kernel[0] + s * kernel[1] + l * kernel[2] + kernel[3]);
int st = int(h * kernel[4] + s * kernel[5] + l * kernel[6] + kernel[7]);
int lt = int(h * kernel[8] + s * kernel[9] + l * kernel[10] + kernel[11]);
ht = qBound(0, ht, 359);
st = qBound(0, st, 255);
lt = qBound(0, lt, 255);
QColor color;
color.setHsl(ht, st, lt, a);
dstLine[x] = color.rgba();
}
}
if (dst)
emit this->oStream(dst);
return dst;
}
void ChangeHSLElement::setKernel(const QVariantList &kernel)
{
QVector<qreal> k;
for (const QVariant &e: kernel)
k << e.toReal();
if (this->d->m_kernel == k)
return;
this->d->m_kernel = k;
emit this->kernelChanged(kernel);
}
void ChangeHSLElement::resetKernel()
{
static const QVariantList kernel = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0
};
this->setKernel(kernel);
}
#include "moc_changehslelement.cpp"