84be511ac0
(This is a re-land of https://codereview.webrtc.org/1921233002, which got reverted for breaking Chromium.) BUG=webrtc:5520 Review URL: https://codereview.webrtc.org/1923133002 Cr-Commit-Position: refs/heads/master@{#12522}
78 lines
2.8 KiB
C++
78 lines
2.8 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 WEBRTC_MODULES_DESKTOP_CAPTURE_CROPPING_WINDOW_CAPTURER_H_
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#define WEBRTC_MODULES_DESKTOP_CAPTURE_CROPPING_WINDOW_CAPTURER_H_
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#include <memory>
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#include "webrtc/base/scoped_ptr.h"
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#include "webrtc/modules/desktop_capture/desktop_capture_options.h"
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#include "webrtc/modules/desktop_capture/screen_capturer.h"
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#include "webrtc/modules/desktop_capture/window_capturer.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 CroppingWindowCapturer : public WindowCapturer,
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public DesktopCapturer::Callback {
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public:
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static WindowCapturer* Create(const DesktopCaptureOptions& options);
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virtual ~CroppingWindowCapturer();
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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 Capture(const DesktopRegion& region) override;
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void SetExcludedWindow(WindowId window) override;
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// WindowCapturer implementation.
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bool GetWindowList(WindowList* windows) override;
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bool SelectWindow(WindowId id) override;
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bool BringSelectedWindowToFront() 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 OnCaptureCompleted(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.
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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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private:
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DesktopCaptureOptions options_;
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DesktopCapturer::Callback* callback_;
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std::unique_ptr<WindowCapturer> window_capturer_;
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std::unique_ptr<ScreenCapturer> screen_capturer_;
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WindowId selected_window_;
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WindowId excluded_window_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_CROPPING_WINDOW_CAPTURER_H_
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