Moved black border detection code to seperate library

Former-commit-id: 590029949b79689ea05409149677e51b748cb64f

libsrc/blackborder/BlackBorderDetector.cpp

@@ -0,0 +1,11 @@
+
+// BlackBorders includes
+#include <blackborder/BlackBorderDetector.h>
+
+using namespace hyperion;
+
+BlackBorderDetector::BlackBorderDetector(uint8_t blackborderThreshold) :
+	_blackborderThreshold(blackborderThreshold)
+{
+	// empty
+}

libsrc/blackborder/BlackBorderProcessor.cpp

@@ -0,0 +1,83 @@
+
+// Blackborder includes
+#include <blackborder/BlackBorderProcessor.h>
+
+using namespace hyperion;
+
+BlackBorderProcessor::BlackBorderProcessor(const unsigned unknownFrameCnt,
+		const unsigned borderFrameCnt,
+		const unsigned blurRemoveCnt,
+		uint8_t blackborderThreshold) :
+	_unknownSwitchCnt(unknownFrameCnt),
+	_borderSwitchCnt(borderFrameCnt),
+	_blurRemoveCnt(blurRemoveCnt),
+	_detector(blackborderThreshold),
+	_currentBorder({true, -1, -1}),
+	_previousDetectedBorder({true, -1, -1}),
+	_consistentCnt(0)
+{
+	// empty
+}
+
+BlackBorder BlackBorderProcessor::getCurrentBorder() const
+{
+	return _currentBorder;
+}
+
+bool BlackBorderProcessor::updateBorder(const BlackBorder & newDetectedBorder)
+{
+	// set the consistency counter
+	if (newDetectedBorder == _previousDetectedBorder)
+	{
+		++_consistentCnt;
+	}
+	else
+	{
+		_previousDetectedBorder = newDetectedBorder;
+		_consistentCnt          = 0;
+	}
+
+	// check if there is a change
+	if (_currentBorder == newDetectedBorder)
+	{
+		// No change required
+		return false;
+	}
+
+	bool borderChanged = false;
+	if (newDetectedBorder.unknown)
+	{
+		// apply the unknown border if we consistently can't determine a border
+		if (_consistentCnt == _unknownSwitchCnt)
+		{
+			_currentBorder = newDetectedBorder;
+			borderChanged = true;
+		}
+	}
+	else
+	{
+		// apply the detected border if it has been detected consistently
+		if (_currentBorder.unknown || _consistentCnt == _borderSwitchCnt)
+		{
+			_currentBorder = newDetectedBorder;
+			borderChanged = true;
+		}
+		else
+		{
+			// apply smaller borders immediately
+			if (newDetectedBorder.verticalSize < _currentBorder.verticalSize)
+			{
+				_currentBorder.verticalSize = newDetectedBorder.verticalSize;
+				borderChanged = true;
+			}
+
+			if (newDetectedBorder.horizontalSize < _currentBorder.horizontalSize)
+			{
+				_currentBorder.horizontalSize = newDetectedBorder.horizontalSize;
+				borderChanged = true;
+			}
+		}
+	}
+
+	return borderChanged;
+}

libsrc/blackborder/CMakeLists.txt

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+
+# Define the current source locations
+SET(CURRENT_HEADER_DIR ${CMAKE_SOURCE_DIR}/include/blackborder)
+SET(CURRENT_SOURCE_DIR ${CMAKE_SOURCE_DIR}/libsrc/blackborder)
+
+SET(Blackborder_HEADERS
+		${CURRENT_HEADER_DIR}/BlackBorderDetector.h
+		${CURRENT_HEADER_DIR}/BlackBorderProcessor.h
+)
+
+SET(Blackborder_SOURCES
+		${CURRENT_SOURCE_DIR}/BlackBorderDetector.cpp
+		${CURRENT_SOURCE_DIR}/BlackBorderProcessor.cpp
+)
+
+add_library(blackborder
+		${Blackborder_HEADERS}
+		${Blackborder_SOURCES}
+)
+
+target_link_libraries(blackborder
+		hyperion-utils
+)