Merge pull request #19809 from alalek:issue_19513

modules/videoio/src/cap_avfoundation.mm

@@ -96,7 +96,7 @@ class CvCaptureCAM : public CvCapture {
         virtual double getProperty(int property_id) const;
         virtual bool setProperty(int property_id, double value);
         virtual int didStart();
-
+        int getCaptureDomain() /*const*/ CV_OVERRIDE { return cv::CAP_AVFOUNDATION; }
     private:
         AVCaptureSession            *mCaptureSession;
         AVCaptureDeviceInput        *mCaptureDeviceInput;
@@ -137,6 +137,7 @@ public:
     virtual double getProperty(int property_id) const;
     virtual bool setProperty(int property_id, double value);
     virtual int didStart();
+    int getCaptureDomain() /*const*/ CV_OVERRIDE { return cv::CAP_AVFOUNDATION; }
 private:
     AVAsset                  *mAsset;
     AVAssetTrack             *mAssetTrack;

modules/videoio/src/cap_avfoundation_mac.mm

@@ -99,7 +99,7 @@ public:
     virtual double getProperty(int property_id) const;
     virtual bool setProperty(int property_id, double value);
     virtual int didStart();
-
+    int getCaptureDomain() /*const*/ CV_OVERRIDE { return cv::CAP_AVFOUNDATION; }
 
 private:
     AVCaptureSession            *mCaptureSession;
@@ -141,7 +141,7 @@ public:
     virtual double getProperty(int property_id) const;
     virtual bool setProperty(int property_id, double value);
     virtual int didStart();
-
+    int getCaptureDomain() /*const*/ CV_OVERRIDE { return cv::CAP_AVFOUNDATION; }
 
 private:
     AVAsset                  *mAsset;