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/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "viewerwindow.h"
#include <QKeyEvent>
#include <QVBoxLayout>
#include "common/timecodefunctions.h"
OLIVE_NAMESPACE_ENTER
ViewerWindow::ViewerWindow(QWidget *parent) :
QWidget(parent, Qt::Window | Qt::WindowStaysOnTopHint)
{
QVBoxLayout* layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->setSpacing(0);
display_widget_ = new ViewerDisplayWidget();
layout->addWidget(display_widget_);
}
ViewerDisplayWidget *ViewerWindow::display_widget() const
{
return display_widget_;
}
void ViewerWindow::SetResolution(int width, int height)
{
// Set GL widget matrix to maintain this texture's aspect ratio
double window_ar = static_cast<double>(this->width()) / static_cast<double>(this->height());
double image_ar = static_cast<double>(width) / static_cast<double>(height);
QMatrix4x4 mat;
if (window_ar > image_ar) {
// Window is wider than image, adjust X scale
mat.scale(image_ar / window_ar, 1.0f, 1.0f);
} else if (window_ar < image_ar) {
// Window is taller than image, adjust Y scale
mat.scale(1.0f, window_ar / image_ar, 1.0f);
}
display_widget_->SetMatrix(mat);
}
void ViewerWindow::Play(const int64_t& start_timestamp, const int& playback_speed, const rational &timebase)
{
timer_.Start(start_timestamp, playback_speed, timebase.toDouble());
playback_timebase_ = timebase;
connect(display_widget_, &ViewerDisplayWidget::frameSwapped, this, &ViewerWindow::UpdateFromQueue);
display_widget_->update();
}
void ViewerWindow::Pause()
{
disconnect(display_widget_, &ViewerDisplayWidget::frameSwapped, this, &ViewerWindow::UpdateFromQueue);
queue_.clear();
}
void ViewerWindow::keyPressEvent(QKeyEvent *e)
{
QWidget::keyPressEvent(e);
if (e->key() == Qt::Key_Escape) {
close();
}
}
void ViewerWindow::closeEvent(QCloseEvent *e)
{
QWidget::closeEvent(e);
deleteLater();
}
void ViewerWindow::UpdateFromQueue()
{
int64_t t = timer_.GetTimestampNow();
rational time = Timecode::timestamp_to_time(t, playback_timebase_);
while (!queue_.empty()) {
const ViewerPlaybackFrame& pf = queue_.front();
if (pf.timestamp == time) {
// Frame was in queue, no need to decode anything
display_widget_->SetImage(pf.frame);
return;
} else {
queue_.pop_front();
}
}
}
OLIVE_NAMESPACE_EXIT
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