136 lines
4.1 KiB
C++
136 lines
4.1 KiB
C++
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#pragma once
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// QT includes
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#include <QJsonObject>
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// Local Hyperion includes
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#include "BlackBorderDetector.h"
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namespace hyperion
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{
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///
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/// The BlackBorder processor is a wrapper around the black-border detector for keeping track of
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/// detected borders and count of the type and size of detected borders.
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///
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class BlackBorderProcessor
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{
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public:
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///
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/// Constructor for the BlackBorderProcessor
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/// @param unknownFrameCnt The number of frames(images) that need to contain an unknown
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/// border before the current border is set to unknown
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/// @param borderFrameCnt The number of frames(images) that need to contain a vertical or
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/// horizontal border becomes the current border
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/// @param blurRemoveCnt The size to add to a horizontal or vertical border (because the
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/// outer pixels is blurred (black and color combined due to image scaling))
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/// @param[in] blackborderThreshold The threshold which the blackborder detector should use
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///
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BlackBorderProcessor(const QJsonObject &blackborderConfig);
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///
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/// Return the current (detected) border
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/// @return The current border
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///
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BlackBorder getCurrentBorder() const;
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///
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/// Return activation state of black border detector
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/// @return The current border
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///
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bool enabled() const;
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///
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/// Set activation state of black border detector
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/// @param enable current state
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///
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void setEnabled(bool enable);
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///
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/// Processes the image. This performs detecion of black-border on the given image and
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/// updates the current border accordingly. If the current border is updated the method call
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/// will return true else false
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///
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/// @param image The image to process
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///
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/// @return True if a different border was detected than the current else false
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///
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template <typename Pixel_T>
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bool process(const Image<Pixel_T> & image)
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{
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// get the border for the single image
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BlackBorder imageBorder;
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if (!enabled())
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{
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imageBorder.horizontalSize = 0;
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imageBorder.verticalSize = 0;
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imageBorder.unknown=true;
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_currentBorder = imageBorder;
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return true;
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}
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if (_detectionMode == "default") {
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imageBorder = _detector.process(image);
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} else if (_detectionMode == "classic") {
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imageBorder = _detector.process_classic(image);
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} else if (_detectionMode == "osd") {
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imageBorder = _detector.process_osd(image);
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}
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// add blur to the border
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if (imageBorder.horizontalSize > 0)
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{
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imageBorder.horizontalSize += _blurRemoveCnt;
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}
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if (imageBorder.verticalSize > 0)
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{
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imageBorder.verticalSize += _blurRemoveCnt;
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}
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const bool borderUpdated = updateBorder(imageBorder);
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return borderUpdated;
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}
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private:
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///
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/// Updates the current border based on the newly detected border. Returns true if the
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/// current border has changed.
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///
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/// @param newDetectedBorder The newly detected border
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/// @return True if the current border changed else false
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///
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bool updateBorder(const BlackBorder & newDetectedBorder);
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/// flag for blackborder detector usage
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bool _enabled;
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/// The number of unknown-borders detected before it becomes the current border
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const unsigned _unknownSwitchCnt;
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/// The number of horizontal/vertical borders detected before it becomes the current border
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const unsigned _borderSwitchCnt;
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// The number of frames that are "ignored" before a new border gets set as _previousDetectedBorder
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const unsigned _maxInconsistentCnt;
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/// The number of pixels to increase a detected border for removing blury pixels
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unsigned _blurRemoveCnt;
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/// The border detection mode
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const std::string _detectionMode;
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/// The blackborder detector
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BlackBorderDetector _detector;
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/// The current detected border
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BlackBorder _currentBorder;
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/// The border detected in the previous frame
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BlackBorder _previousDetectedBorder;
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/// The number of frame the previous detected border matched the incomming border
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unsigned _consistentCnt;
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/// The number of frame the previous detected border NOT matched the incomming border
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unsigned _inconsistentCnt;
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};
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} // end namespace hyperion
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