118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
#include <QMetaType>
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#include <grabber/V4L2Wrapper.h>
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#include <hyperion/ImageProcessorFactory.h>
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V4L2Wrapper::V4L2Wrapper(const std::string &device,
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int input,
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VideoStandard videoStandard,
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PixelFormat pixelFormat,
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int width,
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int height,
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int frameDecimation,
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int pixelDecimation,
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double redSignalThreshold,
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double greenSignalThreshold,
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double blueSignalThreshold,
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Hyperion *hyperion,
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int hyperionPriority) :
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_timeout_ms(1000),
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_priority(hyperionPriority),
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_grabber(device,
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input,
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videoStandard,
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pixelFormat,
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width,
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height,
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frameDecimation,
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pixelDecimation,
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pixelDecimation),
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_processor(ImageProcessorFactory::getInstance().newImageProcessor()),
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_hyperion(hyperion),
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_ledColors(hyperion->getLedCount(), ColorRgb{0,0,0}),
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_timer()
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{
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// set the signal detection threshold of the grabber
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_grabber.setSignalThreshold(
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redSignalThreshold,
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greenSignalThreshold,
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blueSignalThreshold,
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50);
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// register the image type
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qRegisterMetaType<Image<ColorRgb>>("Image<ColorRgb>");
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qRegisterMetaType<std::vector<ColorRgb>>("std::vector<ColorRgb>");
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// Handle the image in the captured thread using a direct connection
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QObject::connect(
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&_grabber, SIGNAL(newFrame(Image<ColorRgb>)),
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this, SLOT(newFrame(Image<ColorRgb>)),
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Qt::DirectConnection);
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// send color data to Hyperion using a queued connection to handle the data over to the main event loop
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QObject::connect(
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this, SIGNAL(emitColors(int,std::vector<ColorRgb>,int)),
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_hyperion, SLOT(setColors(int,std::vector<ColorRgb>,int)),
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Qt::QueuedConnection);
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// setup the higher prio source checker
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// this will disable the v4l2 grabber when a source with hisher priority is active
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_timer.setInterval(500);
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_timer.setSingleShot(false);
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QObject::connect(&_timer, SIGNAL(timeout()), this, SLOT(checkSources()));
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_timer.start();
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}
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V4L2Wrapper::~V4L2Wrapper()
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{
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delete _processor;
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}
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void V4L2Wrapper::start()
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{
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_grabber.start();
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}
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void V4L2Wrapper::stop()
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{
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_grabber.stop();
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}
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void V4L2Wrapper::setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom)
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{
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_grabber.setCropping(cropLeft, cropRight, cropTop, cropBottom);
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}
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void V4L2Wrapper::set3D(VideoMode mode)
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{
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_grabber.set3D(mode);
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}
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void V4L2Wrapper::newFrame(const Image<ColorRgb> &image)
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{
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// process the new image
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_processor->process(image, _ledColors);
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// send colors to Hyperion
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emit emitColors(_priority, _ledColors, _timeout_ms);
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}
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void V4L2Wrapper::checkSources()
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{
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QList<int> activePriorities = _hyperion->getActivePriorities();
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for (int x : activePriorities)
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{
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if (x < _priority)
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{
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// found a higher priority source: grabber should be disabled
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_grabber.stop();
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return;
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}
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}
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// no higher priority source was found: grabber should be enabled
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_grabber.start();
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}
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