85 lines
3.3 KiB
C++
85 lines
3.3 KiB
C++
/*
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* Copyright (c) 2014 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_CROPPING_WINDOW_CAPTURER_H_
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#define MODULES_DESKTOP_CAPTURE_CROPPING_WINDOW_CAPTURER_H_
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#include <memory>
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#include "modules/desktop_capture/desktop_capture_options.h"
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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_memory.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// WindowCapturer implementation that uses a screen capturer to capture the
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// whole screen and crops the video frame to the window area when the captured
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// window is on top.
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class RTC_EXPORT CroppingWindowCapturer : public DesktopCapturer,
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public DesktopCapturer::Callback {
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public:
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static std::unique_ptr<DesktopCapturer> CreateCapturer(
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const DesktopCaptureOptions& options);
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~CroppingWindowCapturer() override;
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// DesktopCapturer implementation.
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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* sources) 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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// DesktopCapturer::Callback implementation, passed to |screen_capturer_| to
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// intercept the capture result.
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void OnCaptureResult(DesktopCapturer::Result result,
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std::unique_ptr<DesktopFrame> frame) override;
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protected:
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explicit CroppingWindowCapturer(const DesktopCaptureOptions& options);
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// The platform implementation should override these methods.
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// Returns true if it is OK to capture the whole screen and crop to the
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// selected window, i.e. the selected window is opaque, rectangular, and not
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// occluded.
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virtual bool ShouldUseScreenCapturer() = 0;
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// Returns the window area relative to the top left of the virtual screen
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// within the bounds of the virtual screen. This function should return the
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// DesktopRect in full desktop coordinates, i.e. the top-left monitor starts
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// from (0, 0).
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virtual DesktopRect GetWindowRectInVirtualScreen() = 0;
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WindowId selected_window() const { return selected_window_; }
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WindowId excluded_window() const { return excluded_window_; }
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DesktopCapturer* window_capturer() const { return window_capturer_.get(); }
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private:
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DesktopCaptureOptions options_;
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DesktopCapturer::Callback* callback_;
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std::unique_ptr<DesktopCapturer> window_capturer_;
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std::unique_ptr<DesktopCapturer> screen_capturer_;
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SourceId selected_window_;
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WindowId excluded_window_;
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};
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_CROPPING_WINDOW_CAPTURER_H_
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