mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
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// STL includes
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#include <csignal>
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#include <iomanip>
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// QT includes
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#include <QImage>
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// getoptPlusPLus includes
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#include <getoptPlusPlus/getoptpp.h>
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#include "V4L2Grabber.h"
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using namespace vlofgren;
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/// Data parameter for the video standard
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typedef vlofgren::PODParameter<V4L2Grabber::VideoStandard> VideoStandardParameter;
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namespace vlofgren {
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/// Translates a string (as passed on the commandline) to a color standard
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///
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/// @param[in] s The string (as passed on the commandline)
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/// @return The color standard
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/// @throws Parameter::ParameterRejected If the string did not result in a video standard
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template<>
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V4L2Grabber::VideoStandard VideoStandardParameter::validate(const std::string& s) throw (Parameter::ParameterRejected)
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{
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QString input = QString::fromStdString(s).toLower();
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if (input == "pal")
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{
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return V4L2Grabber::PAL;
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}
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else if (input == "ntsc")
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{
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return V4L2Grabber::NTSC;
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}
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else if (input == "no-change")
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{
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return V4L2Grabber::NO_CHANGE;
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}
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throw Parameter::ParameterRejected("Invalid value for video standard. Valid values are: PAL, NTSC, and NO-CHANGE");
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return V4L2Grabber::NO_CHANGE;
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}
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}
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int main(int argc, char** argv)
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{
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try
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{
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// create the option parser and initialize all parameters
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OptionsParser optionParser("Simple application to send a command to hyperion using the Json interface");
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ParameterSet & parameters = optionParser.getParameters();
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StringParameter & argDevice = parameters.add<StringParameter> ('d', "device", "The device to use [default=/dev/video0]");
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VideoStandardParameter & argVideoStandard = parameters.add<VideoStandardParameter>('v', "video-standard", "The used video standard. Valid values are PAL. NYSC, or NO-CHANGE [default=PAL]");
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IntParameter & argInput = parameters.add<IntParameter> ('i', "input", "Input channel [default=0]");
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IntParameter & argCropWidth = parameters.add<IntParameter> (0x0, "crop-width", "Number of pixels to crop from the left and right sides in the picture before decimation [default=0]");
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IntParameter & argCropHeight = parameters.add<IntParameter> (0x0, "crop-height", "Number of pixels to crop from the top and the bottom in the picture before decimation [default=0]");
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IntParameter & argSizeDecimation = parameters.add<IntParameter> ('s', "size-decimator", "Decimation factor for the output size [default=1]");
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SwitchParameter<> & argHelp = parameters.add<SwitchParameter<> > ('h', "help", "Show this help message and exit");
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// set defaults
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argDevice.setDefault("/dev/video0");
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argVideoStandard.setDefault(V4L2Grabber::PAL);
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argInput.setDefault(0);
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argCropWidth.setDefault(0);
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argCropHeight.setDefault(0);
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argSizeDecimation.setDefault(1);
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// parse all options
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optionParser.parse(argc, const_cast<const char **>(argv));
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// check if we need to display the usage. exit if we do.
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if (argHelp.isSet())
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{
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optionParser.usage();
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return 0;
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}
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V4L2Grabber grabber(
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argDevice.getValue(),
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argInput.getValue(),
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argVideoStandard.getValue(),
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std::max(0, argCropWidth.getValue()),
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std::max(0, argCropHeight.getValue()),
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1,
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argSizeDecimation.getValue());
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grabber.start();
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grabber.capture(1);
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grabber.stop();
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}
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catch (const std::runtime_error & e)
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{
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// An error occured. Display error and quit
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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