Added desync RMats and MediaFrames support

modules/gapi/src/api/kernels_streaming.cpp

@@ -2,7 +2,7 @@
 // It is subject to the license terms in the LICENSE file found in the top-level directory
 // of this distribution and at http://opencv.org/license.html.
 //
-// Copyright (C) 2020 Intel Corporation
+// Copyright (C) 2020-2021 Intel Corporation
 
 #include "precomp.hpp"
 
@@ -75,6 +75,11 @@ cv::GMat cv::gapi::streaming::desync(const cv::GMat &g) {
     // object will feed both branches of the streaming executable.
 }
 
+// All notes from the above desync(GMat) are also applicable here
+cv::GFrame cv::gapi::streaming::desync(const cv::GFrame &f) {
+    return cv::gapi::copy(detail::desync(f));
+}
+
 cv::GMat cv::gapi::streaming::BGR(const cv::GFrame& in) {
     return cv::gapi::streaming::GBGR::on(in);
 }

modules/gapi/src/executor/gstreamingexecutor.cpp

@@ -186,8 +186,9 @@ void sync_data(cv::gimpl::stream::Result &r, cv::GOptRunArgsP &outputs)
         // FIXME: this conversion should be unified
         switch (out_obj.index())
         {
-            HANDLE_CASE(cv::Scalar); break;
-            HANDLE_CASE(cv::RMat);   break;
+            HANDLE_CASE(cv::Scalar);     break;
+            HANDLE_CASE(cv::RMat);       break;
+            HANDLE_CASE(cv::MediaFrame); break;
 
         case T::index_of<O<cv::Mat>*>(): {
             // Mat: special handling.