69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_
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#define MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_
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#include <memory>
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#include "modules/desktop_capture/desktop_capture_types.h"
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#include "modules/desktop_capture/desktop_capturer.h"
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#include "modules/desktop_capture/desktop_frame.h"
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#include "modules/desktop_capture/desktop_geometry.h"
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#include "modules/desktop_capture/shared_desktop_frame.h"
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#include "modules/desktop_capture/shared_memory.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// DesktopCapturer wrapper that calculates updated_region() by comparing frames
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// content. This class always expects the underlying DesktopCapturer
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// implementation returns a superset of updated regions in DestkopFrame. If a
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// DesktopCapturer implementation does not know the updated region, it should
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// set updated_region() to full frame.
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//
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// This class marks entire frame as updated if the frame size or frame stride
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// has been changed.
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class RTC_EXPORT DesktopCapturerDifferWrapper
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: public DesktopCapturer,
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public DesktopCapturer::Callback {
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public:
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// Creates a DesktopCapturerDifferWrapper with a DesktopCapturer
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// implementation, and takes its ownership.
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explicit DesktopCapturerDifferWrapper(
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std::unique_ptr<DesktopCapturer> base_capturer);
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~DesktopCapturerDifferWrapper() override;
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// DesktopCapturer interface.
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void Start(DesktopCapturer::Callback* callback) override;
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void SetSharedMemoryFactory(
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std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override;
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void CaptureFrame() override;
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void SetExcludedWindow(WindowId window) override;
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bool GetSourceList(SourceList* screens) override;
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bool SelectSource(SourceId id) override;
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bool FocusOnSelectedSource() override;
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bool IsOccluded(const DesktopVector& pos) override;
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private:
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// DesktopCapturer::Callback interface.
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void OnCaptureResult(Result result,
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std::unique_ptr<DesktopFrame> frame) override;
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const std::unique_ptr<DesktopCapturer> base_capturer_;
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DesktopCapturer::Callback* callback_;
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std::unique_ptr<SharedDesktopFrame> last_frame_;
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};
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_
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