[DesktopCapture] Detect screen resolution changes in DirectX capturer

webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h

Index: webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h
diff --git a/webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h b/webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h
index d13961d0da09fee6c53d39c5968ba636fc23160d..7470db9eeb99a05b18ca210109e34448491ca903 100644
--- a/webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h
+++ b/webrtc/modules/desktop_capture/win/dxgi_duplicator_controller.h
@@ -19,6 +19,7 @@
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/desktop_capture/desktop_geometry.h"
 #include "webrtc/modules/desktop_capture/desktop_region.h"
+#include "webrtc/modules/desktop_capture/resolution_change_detector.h"
 #include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
 #include "webrtc/modules/desktop_capture/win/d3d_device.h"
 #include "webrtc/modules/desktop_capture/win/dxgi_adapter_duplicator.h"
@@ -47,6 +48,9 @@ class DxgiDuplicatorController {
     // destructing.
     ~Context();
 
+    // Reset current Context, so it will be reinitialized next time.
+    void Reset();
+
    private:
     friend class DxgiDuplicatorController;
 
@@ -87,6 +91,11 @@ class DxgiDuplicatorController {
   // Detects whether the system supports DXGI based capturer.
   bool IsSupported();
 
+  // Calls Deinitialize() function with lock. Consumers can call this function
+  // to force the DxgiDuplicatorController to be reinitialized to avoid an
+  // expected failure in next Duplicate() call.
+  void Reset();
+
   // Returns a copy of D3dInfo composed by last Initialize() function call.
   bool RetrieveD3dInfo(D3dInfo* info);
 
@@ -167,6 +176,10 @@ class DxgiDuplicatorController {
                    int monitor_id,
                    SharedDesktopFrame* target);
 
+  bool DoDuplicateUnlocked(Context* context,
+                           int monitor_id,
+                           SharedDesktopFrame* target);
+
   // This lock must be locked whenever accessing any of the following objects.
   rtc::CriticalSection lock_;
 
@@ -177,6 +190,7 @@ class DxgiDuplicatorController {
   DesktopVector dpi_;
   std::vector<DxgiAdapterDuplicator> duplicators_;
   D3dInfo d3d_info_;
+  ResolutionChangeDetector resolution_change_detector_;
 };
 
 }  // namespace webrtc