hyperion.ng/src/hyperion-v4l2/hyperion-v4l2.cpp

// STL includes
#include <csignal>
#include <iomanip>
#include <clocale>

// QT includes
#include <QCoreApplication>

// getoptPlusPLus includes
#include <getoptPlusPlus/getoptpp.h>

// blackborder includes
#include <blackborder/BlackBorderProcessor.h>

// grabber includes
#include "grabber/V4L2Grabber.h"

// proto includes
#include "protoserver/ProtoConnection.h"
#include "protoserver/ProtoConnectionWrapper.h"

// hyperion-v4l2 includes
#include "VideoStandardParameter.h"
#include "PixelFormatParameter.h"
#include "ScreenshotHandler.h"

#include "HyperionConfig.h"

using namespace vlofgren;

// save the image as screenshot
void saveScreenshot(void *, const Image<ColorRgb> & image)
{
	// store as PNG
	QImage pngImage((const uint8_t *) image.memptr(), image.width(), image.height(), 3*image.width(), QImage::Format_RGB888);
	pngImage.save("screenshot.png");
}

int main(int argc, char** argv)
{
	std::cout
		<< "hyperion-v4l2:" << std::endl
		<< "\tVersion   : " << HYPERION_VERSION << " (" << HYPERION_BUILD_ID << ")" << std::endl
		<< "\tbuild time: " << __DATE__ << " " << __TIME__ << std::endl;

	QCoreApplication app(argc, argv);

	// force the locale
	setlocale(LC_ALL, "C");
	QLocale::setDefault(QLocale::c());

	// register the image type to use in signals
	qRegisterMetaType<Image<ColorRgb>>("Image<ColorRgb>");

	try
	{
		// create the option parser and initialize all parameters
		OptionsParser optionParser("V4L capture application for Hyperion");
		ParameterSet & parameters = optionParser.getParameters();

		StringParameter		& argDevice		  = parameters.add<StringParameter>	   ('d', "device",		   "The device to use [default: /dev/video0]");
		VideoStandardParameter & argVideoStandard   = parameters.add<VideoStandardParameter>('v', "video-standard",   "The used video standard. Valid values are PAL or NTSC (optional)");
		PixelFormatParameter   & argPixelFormat	 = parameters.add<PixelFormatParameter>  (0x0, "pixel-format",	 "The use pixel format. Valid values are YUYV, UYVY, and RGB32 (optional)");
		IntParameter		   & argInput		   = parameters.add<IntParameter>		  (0x0, "input",			"Input channel (optional)");
		IntParameter		   & argWidth		   = parameters.add<IntParameter>		  (0x0, "width",			"Try to set the width of the video input (optional)");
		IntParameter		   & argHeight		  = parameters.add<IntParameter>		  (0x0, "height",		   "Try to set the height of the video input (optional)");
		IntParameter		   & argCropWidth	   = parameters.add<IntParameter>		  (0x0, "crop-width",	   "Number of pixels to crop from the left and right sides of the picture before decimation [default: 0]");
		IntParameter		   & argCropHeight	  = parameters.add<IntParameter>		  (0x0, "crop-height",	  "Number of pixels to crop from the top and the bottom of the picture before decimation [default: 0]");
		IntParameter		   & argCropLeft		= parameters.add<IntParameter>		  (0x0, "crop-left",		"Number of pixels to crop from the left of the picture before decimation (overrides --crop-width)");
		IntParameter		   & argCropRight	   = parameters.add<IntParameter>		  (0x0, "crop-right",	   "Number of pixels to crop from the right of the picture before decimation (overrides --crop-width)");
		IntParameter		   & argCropTop		 = parameters.add<IntParameter>		  (0x0, "crop-top",		 "Number of pixels to crop from the top of the picture before decimation (overrides --crop-height)");
		IntParameter		   & argCropBottom	  = parameters.add<IntParameter>		  (0x0, "crop-bottom",	  "Number of pixels to crop from the bottom of the picture before decimation (overrides --crop-height)");
		IntParameter		   & argSizeDecimation  = parameters.add<IntParameter>		  ('s', "size-decimator",   "Decimation factor for the output size [default=1]");
		IntParameter		   & argFrameDecimation = parameters.add<IntParameter>		  ('f', "frame-decimator",  "Decimation factor for the video frames [default=1]");
		SwitchParameter<>	  & argScreenshot	  = parameters.add<SwitchParameter<>>	 (0x0, "screenshot",	   "Take a single screenshot, save it to file and quit");
		DoubleParameter		& argSignalThreshold = parameters.add<DoubleParameter>	   ('t', "signal-threshold", "The signal threshold for detecting the presence of a signal. Value should be between 0.0 and 1.0.");
		DoubleParameter		& argRedSignalThreshold = parameters.add<DoubleParameter>	(0x0, "red-threshold",	"The red signal threshold. Value should be between 0.0 and 1.0. (overrides --signal-threshold)");
		DoubleParameter		& argGreenSignalThreshold = parameters.add<DoubleParameter>  (0x0, "green-threshold",  "The green signal threshold. Value should be between 0.0 and 1.0. (overrides --signal-threshold)");
		DoubleParameter		& argBlueSignalThreshold = parameters.add<DoubleParameter>   (0x0, "blue-threshold",   "The blue signal threshold. Value should be between 0.0 and 1.0. (overrides --signal-threshold)");
		SwitchParameter<>	  & arg3DSBS		   = parameters.add<SwitchParameter<>>	 (0x0, "3DSBS",			"Interpret the incoming video stream as 3D side-by-side");
		SwitchParameter<>	  & arg3DTAB		   = parameters.add<SwitchParameter<>>	 (0x0, "3DTAB",			"Interpret the incoming video stream as 3D top-and-bottom");
		StringParameter		& argAddress		 = parameters.add<StringParameter>	   ('a', "address",		  "Set the address of the hyperion server [default: 127.0.0.1:19445]");
		IntParameter		   & argPriority		= parameters.add<IntParameter>		  ('p', "priority",		 "Use the provided priority channel (the lower the number, the higher the priority) [default: 800]");
		SwitchParameter<>	  & argSkipReply	   = parameters.add<SwitchParameter<>>	 (0x0, "skip-reply",	   "Do not receive and check reply messages from Hyperion");
		SwitchParameter<>	  & argHelp			= parameters.add<SwitchParameter<>>	 ('h', "help",			 "Show this help message and exit");

		// set defaults
		argDevice.setDefault("/dev/video0");
		argVideoStandard.setDefault(VIDEOSTANDARD_NO_CHANGE);
		argPixelFormat.setDefault(PIXELFORMAT_NO_CHANGE);
		argInput.setDefault(-1);
		argWidth.setDefault(-1);
		argHeight.setDefault(-1);
		argCropWidth.setDefault(0);
		argCropHeight.setDefault(0);
		argSizeDecimation.setDefault(1);
		argFrameDecimation.setDefault(1);
		argAddress.setDefault("127.0.0.1:19445");
		argPriority.setDefault(800);
		argSignalThreshold.setDefault(-1);

		// parse all options
		optionParser.parse(argc, const_cast<const char **>(argv));

		// check if we need to display the usage. exit if we do.
		if (argHelp.isSet())
		{
			optionParser.usage();
			return 0;
		}

		// cropping values if not defined
		if (!argCropLeft.isSet())   argCropLeft.setDefault(argCropWidth.getValue());
		if (!argCropRight.isSet())  argCropRight.setDefault(argCropWidth.getValue());
		if (!argCropTop.isSet())	argCropTop.setDefault(argCropHeight.getValue());
		if (!argCropBottom.isSet()) argCropBottom.setDefault(argCropHeight.getValue());

		// initialize the grabber
		V4L2Grabber grabber(
					argDevice.getValue(),
					argInput.getValue(),
					argVideoStandard.getValue(),
					argPixelFormat.getValue(),
					argWidth.getValue(),
					argHeight.getValue(),
					std::max(1, argFrameDecimation.getValue()),
					std::max(1, argSizeDecimation.getValue()),
					std::max(1, argSizeDecimation.getValue()));

		// set signal detection
		grabber.setSignalThreshold(
					std::min(1.0, std::max(0.0, argRedSignalThreshold.isSet() ? argRedSignalThreshold.getValue() : argSignalThreshold.getValue())),
					std::min(1.0, std::max(0.0, argGreenSignalThreshold.isSet() ? argGreenSignalThreshold.getValue() : argSignalThreshold.getValue())),
					std::min(1.0, std::max(0.0, argBlueSignalThreshold.isSet() ? argBlueSignalThreshold.getValue() : argSignalThreshold.getValue())),
					50);

		// set cropping values
		grabber.setCropping(
					std::max(0, argCropLeft.getValue()),
					std::max(0, argCropRight.getValue()),
					std::max(0, argCropTop.getValue()),
					std::max(0, argCropBottom.getValue()));

		// set 3D mode if applicable
		if (arg3DSBS.isSet())
		{
			grabber.set3D(VIDEO_3DSBS);
		}
		else if (arg3DTAB.isSet())
		{
			grabber.set3D(VIDEO_3DTAB);
		}

		// run the grabber
		if (argScreenshot.isSet())
		{
			ScreenshotHandler handler("screenshot.png");
			QObject::connect(&grabber, SIGNAL(newFrame(Image<ColorRgb>)), &handler, SLOT(receiveImage(Image<ColorRgb>)));
			grabber.start();
			QCoreApplication::exec();
			grabber.stop();
		}
		else
		{
			ProtoConnectionWrapper handler(argAddress.getValue(), argPriority.getValue(), 1000, argSkipReply.isSet());
			QObject::connect(&grabber, SIGNAL(newFrame(Image<ColorRgb>)), &handler, SLOT(receiveImage(Image<ColorRgb>)));
			if (grabber.start())
				QCoreApplication::exec();
			grabber.stop();
		}
	}
	catch (const std::runtime_error & e)
	{
		// An error occured. Display error and quit
                Error(Logger::getInstance("V4L2GRABBER"), "%s", e.what());
		return 1;
	}

	return 0;
}