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/* Copyright (c) 2012 Patrick Ruoff
*
* 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)
{
_frame = frame.clone();
freshp = true;
}
}
void PTVideoWidget::update_and_repaint()
{
QImage qframe;
{
QMutexLocker foo(&mtx);
if (_frame.empty() || !freshp)
return;
qframe = QImage(_frame.cols, _frame.rows, QImage::Format_RGB888);
freshp = false;
uchar* data = qframe.bits();
const int pitch = qframe.bytesPerLine();
unsigned char *input = (unsigned char*) _frame.data;
const int chans = _frame.channels();
for (int y = 0; y < _frame.rows; y++)
{
const int step = y * _frame.step;
const int pitch_ = y * pitch;
for (int x = 0; x < _frame.cols; x++)
{
data[pitch_ + x * 3 + 0] = input[step + x * chans + 2];
data[pitch_ + x * 3 + 1] = input[step + x * chans + 1];
data[pitch_ + x * 3 + 2] = input[step + x * chans + 0];
}
}
}
qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
{
QMutexLocker foo(&mtx);
texture = qframe;
}
update();
}
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