Merge pull request #19009 from TolyaTalamanov:at/media-frame-copy

[G-API] GStreamingBackend

* Snapshot

* Implement StreamingBackend

* Refactoring

* Refactoring 2

* Clean up

* Add missing functionality to support MediaFrame as output

* Partially address review comments

* Fix build

* Implement reshape for gstreamingbackend and add a test on it

* Address more comments

* Add format.hpp to gapi.hpp

* Fix debug build

* Address review comments

Co-authored-by: Smirnov Alexey <alexey.smirnov@intel.com>

modules/gapi/src/compiler/gcompiler.cpp

@@ -43,6 +43,7 @@
 #include <opencv2/gapi/cpu/imgproc.hpp> // ...Imgproc
 #include <opencv2/gapi/cpu/video.hpp>   // ...and Video kernel implementations
 #include <opencv2/gapi/render/render.hpp>   // render::ocv::backend()
+#include <opencv2/gapi/streaming/format.hpp> // streaming::kernels()
 #endif // !defined(GAPI_STANDALONE)
 // </FIXME:>
 
@@ -72,7 +73,8 @@ namespace
             combine(cv::gapi::core::cpu::kernels(),
                     cv::gapi::imgproc::cpu::kernels(),
                     cv::gapi::video::cpu::kernels(),
-                    cv::gapi::render::ocv::kernels());
+                    cv::gapi::render::ocv::kernels(),
+                    cv::gapi::streaming::kernels());
 #else
             cv::gapi::GKernelPackage();
 #endif // !defined(GAPI_STANDALONE)

modules/gapi/src/compiler/gstreaming_priv.hpp

@@ -20,7 +20,7 @@ namespace gimpl
 
 // FIXME: GAPI_EXPORTS is here only due to tests and Windows linker issues
 // FIXME: It seems it clearly duplicates the GStreamingCompiled and
-// GStreamingExecutable APIs so is highly redundant now.
+// GStreamingIntrinExecutable APIs so is highly redundant now.
 // Same applies to GCompiled/GCompiled::Priv/GExecutor.
 class GAPI_EXPORTS GStreamingCompiled::Priv
 {

modules/gapi/src/compiler/passes/intrin.cpp

@@ -201,7 +201,7 @@ void traceDown(cv::gimpl::GModel::Graph &g,
 
 // Streaming case: ensure the graph has proper isolation of the
 // desynchronized parts, set proper Edge metadata hints for
-// GStreamingExecutable
+// GStreamingIntrinExecutable
 void apply(cv::gimpl::GModel::Graph &g) {
     using namespace cv::gimpl;
 

modules/gapi/src/compiler/passes/streaming.cpp

@@ -32,7 +32,7 @@ namespace cv { namespace gimpl { namespace passes {
  * connected to a new "Sink" node which becomes its _consumer_.
  *
  * These extra nodes are required to streamline the queues
- * initialization by the GStreamingExecutable and its derivatives.
+ * initialization by the GStreamingIntrinExecutable and its derivatives.
  */
 void addStreaming(ade::passes::PassContext &ctx)
 {