Added image handler to v4l2 grabber to send colors to Hyperion

Author: poljvd

include/grabber/DispmanxWrapper.h

@@ -73,7 +73,7 @@ public slots:
 	const int _updateInterval_ms;
 	/// The timeout of the led colors [ms]
 	const int _timeout_ms;
-	/// The priority of the led colors [ms]
+	/// The priority of the led colors
 	const int _priority;
 
 	/// The timer for generating events with the specified update rate

include/grabber/V4L2Wrapper.h

@@ -0,0 +1,59 @@
+#pragma once
+
+// Hyperion includes
+#include <hyperion/Hyperion.h>
+#include <hyperion/ImageProcessor.h>
+
+// Grabber includes
+#include <grabber/V4L2Grabber.h>
+
+class V4L2Wrapper : public QObject
+{
+	Q_OBJECT
+
+public:
+	V4L2Wrapper(const std::string & device,
+			int input,
+			VideoStandard videoStandard,
+			int width,
+			int height,
+			int frameDecimation,
+			int pixelDecimation,
+			Hyperion * hyperion,
+			int hyperionPriority);
+	virtual ~V4L2Wrapper();
+
+public slots:
+	void start();
+
+	void stop();
+
+	void setCropping(int cropLeft,
+					 int cropRight,
+					 int cropTop,
+					 int cropBottom);
+
+	void set3D(VideoMode mode);
+
+private slots:
+	void newFrame(const Image<ColorRgb> & image);
+
+private:
+	/// The timeout of the led colors [ms]
+	const int _timeout_ms;
+
+	/// The priority of the led colors
+	const int _priority;
+
+	/// The V4L2 grabber
+	V4L2Grabber _grabber;
+
+	/// The processor for transforming images to led colors
+	ImageProcessor * _processor;
+
+	/// The Hyperion instance
+	Hyperion * _hyperion;
+
+	/// The list with computed led colors
+	std::vector<ColorRgb> _ledColors;
+};

libsrc/grabber/v4l2/CMakeLists.txt

@@ -4,6 +4,7 @@ SET(CURRENT_SOURCE_DIR ${CMAKE_SOURCE_DIR}/libsrc/grabber/v4l2)
 
 SET(V4L2_QT_HEADERS
 		${CURRENT_HEADER_DIR}/V4L2Grabber.h
+		${CURRENT_HEADER_DIR}/V4L2Wrapper.h
 )
 
 SET(V4L2_HEADERS
@@ -12,6 +13,7 @@ SET(V4L2_HEADERS
 
 SET(V4L2_SOURCES
 		${CURRENT_SOURCE_DIR}/V4L2Grabber.cpp
+		${CURRENT_SOURCE_DIR}/V4L2Wrapper.cpp
 )
 
 QT4_WRAP_CPP(V4L2_HEADERS_MOC ${V4L2_QT_HEADERS})

libsrc/grabber/v4l2/V4L2Wrapper.cpp

@@ -0,0 +1,67 @@
+#include <grabber/V4L2Wrapper.h>
+
+#include <hyperion/ImageProcessorFactory.h>
+
+V4L2Wrapper::V4L2Wrapper(const std::string &device,
+		int input,
+		VideoStandard videoStandard,
+		int width,
+		int height,
+		int frameDecimation,
+		int pixelDecimation,
+		Hyperion *hyperion,
+		int hyperionPriority) :
+	_timeout_ms(1000),
+	_priority(hyperionPriority),
+	_grabber(device,
+			 input,
+			 videoStandard,
+			 width,
+			 height,
+			 frameDecimation,
+			 pixelDecimation,
+			 pixelDecimation),
+	_processor(ImageProcessorFactory::getInstance().newImageProcessor()),
+	_hyperion(hyperion),
+	_ledColors(hyperion->getLedCount(), ColorRgb{0,0,0})
+{
+	// connect the new frame signal using a queued connection, because it will be called from a different thread
+	QObject::connect(&_grabber, SIGNAL(newFrame(Image<ColorRgb>)), this, SLOT(newFrame(Image<ColorRgb>)), Qt::QueuedConnection);
+}
+
+V4L2Wrapper::~V4L2Wrapper()
+{
+	delete _processor;
+}
+
+void V4L2Wrapper::start()
+{
+	_grabber.start();
+}
+
+void V4L2Wrapper::stop()
+{
+	_grabber.stop();
+}
+
+void V4L2Wrapper::setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom)
+{
+	_grabber.setCropping(cropLeft, cropRight, cropTop, cropBottom);
+}
+
+void V4L2Wrapper::set3D(VideoMode mode)
+{
+	_grabber.set3D(mode);
+}
+
+void V4L2Wrapper::newFrame(const Image<ColorRgb> &image)
+{
+	// TODO: add a signal detector
+
+	// process the new image
+	_processor->process(image, _ledColors);
+
+	// send colors to Hyperion
+	_hyperion->setColors(_priority, _ledColors, _timeout_ms);
+}
+

src/hyperiond/hyperiond.cpp

@@ -24,7 +24,7 @@
 
 #ifdef ENABLE_V4L2
 // v4l2 grabber
-#include <grabber/V4L2Grabber.h>
+#include <grabber/V4L2Wrapper.h>
 #endif
 
 // XBMC Video checker includes
@@ -172,27 +172,27 @@ int main(int argc, char** argv)
 
 #ifdef ENABLE_V4L2
 	// construct and start the v4l2 grabber if the configuration is present
-	V4L2Grabber * v4l2Grabber = nullptr;
+	V4L2Wrapper * v4l2Grabber = nullptr;
 	if (config.isMember("grabber-v4l2"))
 	{
 		const Json::Value & grabberConfig = config["grabber-v4l2"];
-		v4l2Grabber = new V4L2Grabber(
+		v4l2Grabber = new V4L2Wrapper(
 					grabberConfig.get("device", "/dev/video0").asString(),
 					grabberConfig.get("input", 0).asInt(),
-					parseVideoStandard(grabberConfig.get("standard", "NONE").asString()),
+					parseVideoStandard(grabberConfig.get("standard", "no-change").asString()),
 					grabberConfig.get("width", -1).asInt(),
 					grabberConfig.get("height", -1).asInt(),
 					grabberConfig.get("frameDecimation", 2).asInt(),
 					grabberConfig.get("sizeDecimation", 8).asInt(),
-					grabberConfig.get("sizeDecimation", 8).asInt());
+					&hyperion,
+					grabberConfig.get("priority", 800).asInt());
 		v4l2Grabber->set3D(parse3DMode(grabberConfig.get("mode", "2D").asString()));
 		v4l2Grabber->setCropping(
 					grabberConfig.get("cropLeft", 0).asInt(),
 					grabberConfig.get("cropRight", 0).asInt(),
 					grabberConfig.get("cropTop", 0).asInt(),
 					grabberConfig.get("cropBottom", 0).asInt());
 
-		// TODO: create handler
 		v4l2Grabber->start();
 		std::cout << "V4l2 grabber created and started" << std::endl;
 	}