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/* Copyright (c) 2012 Patrick Ruoff
* Copyright (c) 2014-2016 Stanislaw Halik <sthalik@misaki.pl>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "video-widget.hpp"
#include <opencv2/imgproc.hpp>
#include "api/is-window-visible.hpp"
cv_video_widget::cv_video_widget(QWidget* parent) :
QWidget(parent),
freshp(false),
visible(true)
{
connect(&timer, SIGNAL(timeout()), this, SLOT(update_and_repaint()));
timer.start(50);
}
void cv_video_widget::update_image(const cv::Mat& frame)
{
QMutexLocker foo(&mtx);
if (!freshp)
{
if (_frame.cols != frame.cols || _frame.rows != frame.rows)
{
_frame = cv::Mat(frame.rows, frame.cols, CV_8U);
_frame2 = cv::Mat(frame.rows, frame.cols, CV_8U);
}
frame.copyTo(_frame);
freshp = true;
}
}
void cv_video_widget::paintEvent(QPaintEvent*)
{
QMutexLocker foo(&mtx);
QPainter painter(this);
painter.drawImage(rect(), texture);
}
void cv_video_widget::update_and_repaint()
{
QMutexLocker l(&mtx);
if (window_check_timer.elapsed_ms() > 250)
{
visible = is_window_visible(this);
window_check_timer.start();
}
if (visible)
{
if (_frame.empty() || !freshp)
return;
cv::cvtColor(_frame, _frame2, cv::COLOR_RGB2BGR);
if (_frame3.cols != width() || _frame3.rows != height())
_frame3 = cv::Mat(height(), width(), CV_8U);
cv::resize(_frame2, _frame3, cv::Size(width(), height()), 0, 0, cv::INTER_NEAREST);
texture = QImage((const unsigned char*) _frame3.data, _frame3.cols, _frame3.rows, QImage::Format_RGB888);
freshp = false;
update();
}
}
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