152 lines
3.9 KiB
C++
152 lines
3.9 KiB
C++
#include <QMetaType>
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#include <grabber/VideoWrapper.h>
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// qt includes
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#include <QTimer>
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VideoWrapper::VideoWrapper()
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#if defined(ENABLE_V4L2)
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: GrabberWrapper("V4L2", &_grabber)
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#elif defined(ENABLE_MF)
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: GrabberWrapper("V4L2:MEDIA_FOUNDATION", &_grabber)
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#endif
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, _grabber()
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{
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// register the image type
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qRegisterMetaType<Image<ColorRgb>>("Image<ColorRgb>");
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// Handle the image in the captured thread (Media Foundation/V4L2) using a direct connection
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connect(&_grabber, SIGNAL(newFrame(const Image<ColorRgb>&)), this, SLOT(newFrame(const Image<ColorRgb>&)), Qt::DirectConnection);
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connect(&_grabber, SIGNAL(readError(const char*)), this, SLOT(readError(const char*)), Qt::DirectConnection);
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}
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VideoWrapper::~VideoWrapper()
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{
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stop();
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}
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bool VideoWrapper::start()
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{
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return (_grabber.prepare() && _grabber.start() && GrabberWrapper::start());
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}
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void VideoWrapper::stop()
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{
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_grabber.stop();
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GrabberWrapper::stop();
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}
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#if defined(ENABLE_CEC) && !defined(ENABLE_MF)
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void VideoWrapper::handleCecEvent(CECEvent event)
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{
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_grabber.handleCecEvent(event);
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}
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#endif
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void VideoWrapper::handleSettingsUpdate(settings::type type, const QJsonDocument& config)
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{
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if(type == settings::V4L2 && _grabberName.startsWith("V4L2"))
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{
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// extract settings
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const QJsonObject& obj = config.object();
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// set global grabber state
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setV4lGrabberState(obj["enable"].toBool(false));
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if (getV4lGrabberState())
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{
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#if defined(ENABLE_MF)
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// Device path
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_grabber.setDevice(obj["device"].toString("none"));
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#endif
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#if defined(ENABLE_V4L2)
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// Device path and name
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_grabber.setDevice(obj["device"].toString("none"), obj["available_devices"].toString("none"));
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#endif
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// Device input
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_grabber.setInput(obj["input"].toInt(0));
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// Device resolution
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_grabber.setWidthHeight(obj["width"].toInt(0), obj["height"].toInt(0));
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// Device encoding format
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_grabber.setEncoding(obj["encoding"].toString("NO_CHANGE"));
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// Video standard
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_grabber.setVideoStandard(parseVideoStandard(obj["standard"].toString("NO_CHANGE")));
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// Image size decimation
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_grabber.setPixelDecimation(obj["sizeDecimation"].toInt(8));
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// Flip mode
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_grabber.setFlipMode(parseFlipMode(obj["flip"].toString("NO_CHANGE")));
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// Image cropping
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_grabber.setCropping(
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obj["cropLeft"].toInt(0),
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obj["cropRight"].toInt(0),
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obj["cropTop"].toInt(0),
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obj["cropBottom"].toInt(0));
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// Brightness, Contrast, Saturation, Hue
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_grabber.setBrightnessContrastSaturationHue(
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obj["hardware_brightness"].toInt(0),
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obj["hardware_contrast"].toInt(0),
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obj["hardware_saturation"].toInt(0),
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obj["hardware_hue"].toInt(0));
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#if defined(ENABLE_CEC) && defined(ENABLE_V4L2)
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// CEC Standby
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_grabber.setCecDetectionEnable(obj["cecDetection"].toBool(true));
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#endif
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// Software frame skipping
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_grabber.setFpsSoftwareDecimation(obj["fpsSoftwareDecimation"].toInt(1));
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// Signal detection
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_grabber.setSignalDetectionEnable(obj["signalDetection"].toBool(true));
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_grabber.setSignalDetectionOffset(
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obj["sDHOffsetMin"].toDouble(0.25),
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obj["sDVOffsetMin"].toDouble(0.25),
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obj["sDHOffsetMax"].toDouble(0.75),
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obj["sDVOffsetMax"].toDouble(0.75));
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_grabber.setSignalThreshold(
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obj["redSignalThreshold"].toDouble(0.0)/100.0,
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obj["greenSignalThreshold"].toDouble(0.0)/100.0,
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obj["blueSignalThreshold"].toDouble(0.0)/100.0,
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obj["noSignalCounterThreshold"].toInt(50));
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// Device framerate
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_grabber.setFramerate(obj["fps"].toInt(15));
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updateTimer(_ggrabber->getUpdateInterval());
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// Reload the Grabber if any settings have been changed that require it
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_grabber.reload(getV4lGrabberState());
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}
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else
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stop();
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}
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}
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void VideoWrapper::newFrame(const Image<ColorRgb> &image)
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{
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emit systemImage(_grabberName, image);
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}
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void VideoWrapper::readError(const char* err)
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{
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Error(_log, "Stop grabber, because reading device failed. (%s)", err);
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stop();
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}
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void VideoWrapper::action()
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{
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// dummy as v4l get notifications from stream
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}
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