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/* Copyright (c) 2012 Patrick Ruoff
* Copyright (c) 2015 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.
*
* 20130312, WVR: Add 7 lines to resizeGL after resize_frame. This should lower CPU-load.
*/
#include "pt_video_widget.h"
void PTVideoWidget::update_image(const cv::Mat& frame)
{
QMutexLocker foo(&mtx);
if (!freshp)
{
if (_frame.cols != frame.cols ||
_frame.rows != frame.rows ||
_frame.channels() != frame.channels())
{
_frame = cv::Mat();
}
frame.copyTo(_frame);
freshp = true;
}
}
void PTVideoWidget::update_and_repaint()
{
{
QMutexLocker foo(&mtx);
if (_frame.empty() || !freshp)
return;
texture = QImage(_frame.cols, _frame.rows, QImage::Format_RGB888);
freshp = false;
uchar* data = texture.bits();
const int chans = _frame.channels();
const int pitch = texture.bytesPerLine();
for (int y = 0; y < _frame.rows; y++)
{
unsigned char* dest = data + pitch * y;
const unsigned char* ln = _frame.ptr(y);
for (int x = 0; x < _frame.cols; x++)
{
const int idx = x * chans;
const int x_ = x * 3;
dest[x_ + 0] = ln[idx + 2];
dest[x_ + 1] = ln[idx + 1];
dest[x_ + 2] = ln[idx + 0];
}
}
}
texture = texture.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
update();
}
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