cast: support cursor rendering for tab capture

content/browser/media/capture/aura_window_capture_machine.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_
 #define CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
+#include "content/browser/media/capture/cursor_renderer_aura.h"
 #include "media/capture/content/screen_capture_device_core.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/cursor/cursors_aura.h"
 #include "ui/compositor/compositor.h"
 
 namespace cc {
 
 class CopyOutputResult;
 
@@ skipping 63 matching lines @@
       scoped_ptr<cc::CopyOutputResult> result);
 
   // A helper which does the real work for DidCopyOutput. Returns true if
   // succeeded.
   bool ProcessCopyOutputResponse(
       scoped_refptr<media::VideoFrame> video_frame,
       base::TimeTicks start_time,
       const CaptureFrameCallback& capture_frame_cb,
       scoped_ptr<cc::CopyOutputResult> result);
 
-  // Helper function to update cursor state.
-  // |region_in_frame| defines where the desktop is rendered in the captured
-  // frame.
-  // Returns the current cursor position in captured frame.
-  gfx::Point UpdateCursorState(const gfx::Rect& region_in_frame);
-
-  // Clears cursor state.
-  void ClearCursorState();
+  // Renders the cursor if needed and then delivers the captured frame.
+  static void CopyOutputFinishedForVideo(
+      base::WeakPtr<AuraWindowCaptureMachine> machine,
+      base::TimeTicks start_time,
+      const CaptureFrameCallback& capture_frame_cb,
+      const scoped_refptr<media::VideoFrame>& target,
+      scoped_ptr<cc::SingleReleaseCallback> release_callback,
+      bool result);
 
   // The window associated with the desktop.
   aura::Window* desktop_window_;
 
   // The timer that kicks off period captures.
   base::Timer timer_;
 
   // Whether screen capturing or window capture.
   bool screen_capture_;
 
   // Makes all the decisions about which frames to copy, and how.
   scoped_refptr<media::ThreadSafeCaptureOracle> oracle_proxy_;
 
   // The capture parameters for this capture.
   media::VideoCaptureParams capture_params_;
 
   // YUV readback pipeline.
   scoped_ptr<content::ReadbackYUVInterface> yuv_readback_pipeline_;
 
-  // Cursor state.
-  ui::Cursor last_cursor_;
-  gfx::Size window_size_when_cursor_last_updated_;
-  SkBitmap scaled_cursor_bitmap_;
+  // Renders mouse cursor on frame.
+  scoped_ptr<content::CursorRendererAura> cursor_renderer_;
 
   // TODO(jiayl): Remove power_save_blocker_ when there is an API to keep the
   // screen from sleeping for the drive-by web.
   scoped_ptr<PowerSaveBlocker> power_save_blocker_;
 
   // WeakPtrs are used for the asynchronous capture callbacks passed to external
   // modules.  They are only valid on the UI thread and become invalidated
   // immediately when InternalStop() is called to ensure that no more captured
   // frames will be delivered to the client.
   base::WeakPtrFactory<AuraWindowCaptureMachine> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AuraWindowCaptureMachine);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_AURA_WINDOW_CAPTURE_MACHINE_H_