Index: webrtc/modules/desktop_capture/screen_capturer_differ_wrapper.h |
diff --git a/webrtc/modules/desktop_capture/screen_capturer_differ_wrapper.h b/webrtc/modules/desktop_capture/screen_capturer_differ_wrapper.h |
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index 0000000000000000000000000000000000000000..c7a20b3d07907eaaa2a53e3eab11e63ac5961c6c |
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+++ b/webrtc/modules/desktop_capture/screen_capturer_differ_wrapper.h |
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+/* |
+ * Copyright (c) 2016 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_SCREEN_CAPTURER_DIFFER_WRAPPER_H_ |
+#define WEBRTC_MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURER_DIFFER_WRAPPER_H_ |
+ |
+#include <memory> |
+ |
+#include "webrtc/modules/desktop_capture/screen_capturer.h" |
+#include "webrtc/modules/desktop_capture/shared_desktop_frame.h" |
+ |
+namespace webrtc { |
+ |
+// ScreenCapturer wrapper that calculates updated_region() by comparing frames |
+// content. This class always expects the underlying ScreenCapturer |
+// implementation returns a superset of updated regions in DestkopFrame. If a |
+// ScreenCapturer implementation does not know the updated region, it should |
+// set updated_region() to full frame. |
+// |
+// This class marks entire frame as updated if the frame size or frame stride |
+// has been changed. |
+class ScreenCapturerDifferWrapper : public ScreenCapturer, |
+ public DesktopCapturer::Callback { |
+ public: |
+ // Creates a ScreenCapturerDifferWrapper with a ScreenCapturer implementation, |
+ // and takes its ownership. |
+ explicit ScreenCapturerDifferWrapper( |
+ std::unique_ptr<ScreenCapturer> base_capturer); |
+ ~ScreenCapturerDifferWrapper() override; |
+ |
+ // ScreenCapturer interface. |
+ void Start(DesktopCapturer::Callback* callback) override; |
+ void SetSharedMemoryFactory( |
+ std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override; |
+ void Capture(const DesktopRegion& region) override; |
+ bool GetScreenList(ScreenList* screens) override; |
+ bool SelectScreen(ScreenId id) override; |
+ |
+ private: |
+ // DesktopCapturer::Callback interface. |
+ void OnCaptureResult(Result result, |
+ std::unique_ptr<DesktopFrame> frame) override; |
+ |
+ const std::unique_ptr<ScreenCapturer> base_capturer_; |
+ DesktopCapturer::Callback* callback_; |
+ std::unique_ptr<SharedDesktopFrame> last_frame_; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_SCREEN_CAPTURER_DIFFER_WRAPPER_H_ |