hyperion.ng/libsrc/grabber/x11/X11Wrapper.cpp

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// Hyperion includes
#include <hyperion/Hyperion.h>
#include <hyperion/ImageProcessorFactory.h>
#include <hyperion/ImageProcessor.h>
// X11 grabber includes
#include <grabber/X11Wrapper.h>
#include <grabber/X11Grabber.h>
X11Wrapper::X11Wrapper(bool useXGetImage, int cropLeft, int cropRight, int cropTop, int cropBottom, int horizontalPixelDecimation, int verticalPixelDecimation, const unsigned updateRate_Hz, const int priority)
: GrabberWrapper("X11", priority)
, _updateInterval_ms(1000/updateRate_Hz)
, _timeout_ms(2 * _updateInterval_ms)
, _grabber(new X11Grabber(useXGetImage, cropLeft, cropRight, cropTop, cropBottom, horizontalPixelDecimation, verticalPixelDecimation))
, _ledColors(Hyperion::getInstance()->getLedCount(), ColorRgb{0,0,0})
, _init(false)
, _x11SetupSuccess(false)
{
// Configure the timer to generate events every n milliseconds
_timer.setInterval(_updateInterval_ms);
}
X11Wrapper::~X11Wrapper()
{
delete _grabber;
}
bool X11Wrapper::start()
{
if (! _init )
{
_init = true;
_x11SetupSuccess = _grabber->Setup();
if ( _x11SetupSuccess )
{
_x11SetupSuccess = (_grabber->updateScreenDimensions() >= 0);
_processor->setSize(_grabber->getImageWidth(), _grabber->getImageHeight());
_image.resize(_grabber->getImageWidth(), _grabber->getImageHeight());
}
}
// Start the timer with the pre configured interval
if ( _x11SetupSuccess )
{
GrabberWrapper::start();
}
ErrorIf( ! _x11SetupSuccess, _log, "X11 Grabber start failed");
return _x11SetupSuccess;
}
void X11Wrapper::action()
{
int result = _grabber->updateScreenDimensions();
if (result < 0 )
{
return;
}
if ( result > 0 )
{
_processor->setSize(_grabber->getImageWidth(), _grabber->getImageHeight());
_image.resize(_grabber->getImageWidth(), _grabber->getImageHeight());
}
// Grab frame into the allocated image
_grabber->grabFrame(_image);
if ( _forward )
{
emit emitImage(_priority, _image, _timeout_ms);
}
_processor->process(_image, _ledColors);
_hyperion->setColors(_priority, _ledColors, _timeout_ms);
}
void X11Wrapper::setVideoMode(const VideoMode mode)
{
_grabber->setVideoMode(mode);
}