File indexing completed on 2024-05-12 15:49:09

 /*
     SPDX-FileCopyrightText: 2022 Volker Krause <vkrause@kde.org>
     SPDX-License-Identifier: MIT
 */
 
 #ifndef PRISON_VIDEOSCANNER_H
 #define PRISON_VIDEOSCANNER_H
 
 #include "prisonscanner_export.h"
 #include "scanresult.h"
 
 #include <QAbstractVideoFilter>
 #include <QObject>
 
 #include <memory>
 
 namespace Prison
 {
 
 class VideoScannerPrivate;
 
 /** Scans a live video feed for barcodes.
  *
  *  In Qt5 this can be added as a video filter to a VideoOutput element.
  *  In Qt6 this can be connected to a QVideoSink object.
  *
  *  @since 5.94
  */
 class PRISONSCANNER_EXPORT VideoScanner : public QAbstractVideoFilter
 {
     Q_OBJECT
     Q_PROPERTY(Prison::ScanResult result READ result NOTIFY resultChanged)
     Q_PROPERTY(Prison::Format::BarcodeFormats formats READ formats WRITE setFormats NOTIFY formatsChanged)
 
 public:
     explicit VideoScanner(QObject *parent = nullptr);
     ~VideoScanner();
 
     /** The latest result of the barcode scan. */
     ScanResult result() const;
 
     /** The barcode formats the scanner should look for.
      *  By default all supported formats are enabled.
      */
     Format::BarcodeFormats formats() const;
     /**
      * Sets the barcode formats to detect.
      * @param formats can be OR'ed values from Format::BarcodeFormats.
      */
     void setFormats(Format::BarcodeFormats formats);
 
     /// @cond internal
     QVideoFilterRunnable *createFilterRunnable() override;
     /// @endcond
 
 Q_SIGNALS:
     /** Emitted whenever we get a new scan result, as long as any
      *  property of the result changes. On a live video feed this can
      *  be very frequently due to the changes of the position of the detected
      *  barcode. This is therefore useful e.g. for marking the position
      *  of the detected barcode.
      *  @see resultContentChanged
      */
     void resultChanged(const Prison::ScanResult &scanResult);
 
     /** Emitted when a barcode with a new content has been detected, but
      *  not when merely the position of a barcode changes in the video stream.
      *  This is useful e.g. for continuously scanning multiple codes in one go.
      *  @see resultChanged
      */
     void resultContentChanged(const Prison::ScanResult &scanResult);
 
     void formatsChanged();
     void videoSinkChanged();
 
 private:
     std::unique_ptr<VideoScannerPrivate> d;
 };
 
 }
 
 #endif // PRISON_VIDEOSCANNER_H