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Added qt screenshot test

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Former-commit-id: c28e098ded780a6597952c83007fea1fe8da36fa
This commit is contained in:
T. van der Zwan 2014-03-06 21:01:14 +01:00
parent 6b63b57f17
commit 5f457fd9e3
2 changed files with 56 additions and 4 deletions
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56
test/TestQtScreenshot.cpp
View File

@ -6,15 +6,67 @@
#include <QApplication>
#include <QDesktopWidget>
#include <QPixmap>
#include <Qfile>
#include <QRgb>
#include <QElapsedTimer>
// Utils includes
#include <utils/Image.h>
#include <utils/ColorRgb.h>
void createScreenshot(const int cropHorizontal, const int cropVertical, const int decimation, Image<ColorRgb> & image)
{
// Create the full size screenshot
const QRect screenSize = QApplication::desktop()->screenGeometry();
const int croppedWidth = screenSize.width() - 2*cropVertical;
const int croppedHeight = screenSize.height() - 2*cropHorizontal;
const QPixmap fullSizeScreenshot = QPixmap::grabWindow(QApplication::desktop()->winId(), cropVertical, cropHorizontal, croppedWidth, croppedHeight);
// Scale the screenshot to the required size
const int width = fullSizeScreenshot.width()/decimation;
const int height = fullSizeScreenshot.height()/decimation;
const QPixmap scaledScreenshot = fullSizeScreenshot.scaled(width, height, Qt::IgnoreAspectRatio, Qt::FastTransformation);
// Convert the QPixmap to QImage in order to get out RGB values
const QImage qImage = scaledScreenshot.toImage();
// Make sure that the output image has the right size
image.resize(width, height);
// Copy the data into the output image
for (int y=0; y<qImage.height(); ++y)
{
for (int x=0; x<qImage.width(); ++x)
{
// Get the pixel at [x;y] (format int32 #AARRGGBB)
const QRgb inPixel = qImage.pixel(x,y);
// Copy the color channels into the output pixel
ColorRgb & outPixel = image(x,y);
outPixel.red = (inPixel & 0x00ff0000) >> 16;
outPixel.green = (inPixel & 0x0000ff00) >> 8;
outPixel.blue = (inPixel & 0x000000ff);
}
}
}
int main(int argc, char** argv)
{
int decimation = 10;
QApplication app(argc, argv);
QElapsedTimer timer;
QPixmap originalPixmap = QPixmap::grabWindow(QApplication::desktop()->winId());
Image<ColorRgb> screenshot(64,64);
std::cout << "Grabbed image: [" << originalPixmap.width() << "; " << originalPixmap.height() << "]" << std::endl;
int loopCnt = 100;
timer.start();
for (int i=0; i<loopCnt; ++i)
{
createScreenshot(0,0, decimation, screenshot);
}
std::cout << "Time required for single screenshot: " << timer.elapsed()/loopCnt << "ms" << std::endl;
return 0;
}

4
test/TestX11Performance.cpp
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@ -67,7 +67,7 @@ void foo_1(int pixelDecimation)
// Cleanup allocated resources of the X11 grab
XDestroyImage(xImage);
std::cout << "Time required: " << timer.elapsed() << " us" << std::endl;
std::cout << "Time required: " << timer.elapsed() << " ms" << std::endl;
XCloseDisplay(x11Display);
}
@ -125,7 +125,7 @@ void foo_2(int pixelDecimation)
XDestroyImage(xImage);
}
}
std::cout << "Time required: " << timer.elapsed() << " us" << std::endl;
std::cout << "Time required: " << timer.elapsed() << " ms" << std::endl;
XCloseDisplay(x11Display);