1 files changed, 99 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/modules/desktop_capture/win/screen_capturer_win_gdi.h b/chromium/third_party/webrtc/modules/desktop_capture/win/screen_capturer_win_gdi.h
new file mode 100644
index 00000000000..2db87d097ca
--- /dev/null
+++ b/chromium/third_party/webrtc/modules/desktop_capture/win/screen_capturer_win_gdi.h
@@ -0,0 +1,99 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_GDI_H_
+#define WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_GDI_H_
+
+#include "webrtc/modules/desktop_capture/screen_capturer.h"
+
+#include <windows.h>
+
+#include "webrtc/modules/desktop_capture/mouse_cursor_shape.h"
+#include "webrtc/modules/desktop_capture/screen_capture_frame_queue.h"
+#include "webrtc/modules/desktop_capture/screen_capturer_helper.h"
+#include "webrtc/modules/desktop_capture/win/scoped_thread_desktop.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+
+namespace webrtc {
+
+class Differ;
+class MouseShapeObserver;
+
+// ScreenCapturerWinGdi captures 32bit RGB using GDI.
+//
+// ScreenCapturerWinGdi is double-buffered as required by ScreenCapturer.
+class ScreenCapturerWinGdi : public ScreenCapturer {
+ public:
+  explicit ScreenCapturerWinGdi(const DesktopCaptureOptions& options);
+  virtual ~ScreenCapturerWinGdi();
+
+  // Overridden from ScreenCapturer:
+  virtual void Start(Callback* callback) OVERRIDE;
+  virtual void Capture(const DesktopRegion& region) OVERRIDE;
+  virtual void SetMouseShapeObserver(
+      MouseShapeObserver* mouse_shape_observer) OVERRIDE;
+  virtual bool GetScreenList(ScreenList* screens) OVERRIDE;
+  virtual bool SelectScreen(ScreenId id) OVERRIDE;
+
+ private:
+  typedef HRESULT (WINAPI * DwmEnableCompositionFunc)(UINT);
+
+  // Make sure that the device contexts match the screen configuration.
+  void PrepareCaptureResources();
+
+  // Captures the current screen contents into the current buffer. Returns true
+  // if succeeded.
+  bool CaptureImage();
+
+  // Capture the current cursor shape.
+  void CaptureCursor();
+
+  Callback* callback_;
+  MouseShapeObserver* mouse_shape_observer_;
+  ScreenId current_screen_id_;
+  std::wstring current_device_key_;
+
+  // A thread-safe list of invalid rectangles, and the size of the most
+  // recently captured screen.
+  ScreenCapturerHelper helper_;
+
+  // Snapshot of the last cursor bitmap we sent to the client. This is used
+  // to diff against the current cursor so we only send a cursor-change
+  // message when the shape has changed.
+  MouseCursorShape last_cursor_;
+
+  ScopedThreadDesktop desktop_;
+
+  // GDI resources used for screen capture.
+  HDC desktop_dc_;
+  HDC memory_dc_;
+
+  // Queue of the frames buffers.
+  ScreenCaptureFrameQueue queue_;
+
+  // Rectangle describing the bounds of the desktop device context, relative to
+  // the primary display's top-left.
+  DesktopRect desktop_dc_rect_;
+
+  // Class to calculate the difference between two screen bitmaps.
+  scoped_ptr<Differ> differ_;
+
+  HMODULE dwmapi_library_;
+  DwmEnableCompositionFunc composition_func_;
+
+  // Used to suppress duplicate logging of SetThreadExecutionState errors.
+  bool set_thread_execution_state_failed_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenCapturerWinGdi);
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_GDI_H_