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86ee89f73e
On a 32bit system, this reduces the allocation size of the flag down from 12 bytes to 8, and removes the need for a vtable (the extra 4 bytes are the vtable pointer). The downside is that this change makes the binary layout of the flag, less compatible with RefCountedObject<> based reference counting objects and thus we don't immediately get the benefits of identical COMDAT folding and subsequently there's a slight binary size increase. With wider use, the binary size benefits will come. Bug: none Change-Id: I04129771790a3258d6accaf0ab1258b7a798a55e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215681 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33793}
81 lines
3 KiB
C++
81 lines
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_FULL_SCREEN_WINDOW_DETECTOR_H_
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#define MODULES_DESKTOP_CAPTURE_FULL_SCREEN_WINDOW_DETECTOR_H_
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#include <memory>
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#include "api/function_view.h"
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#include "api/ref_counted_base.h"
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#include "api/scoped_refptr.h"
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#include "modules/desktop_capture/desktop_capturer.h"
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#include "modules/desktop_capture/full_screen_application_handler.h"
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#include "rtc_base/constructor_magic.h"
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namespace webrtc {
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// This is a way to handle switch to full-screen mode for application in some
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// specific cases:
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// - Chrome on MacOS creates a new window in full-screen mode to
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// show a tab full-screen and minimizes the old window.
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// - PowerPoint creates new windows in full-screen mode when user goes to
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// presentation mode (Slide Show Window, Presentation Window).
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//
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// To continue capturing in these cases, we try to find the new full-screen
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// window using criteria provided by application specific
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// FullScreenApplicationHandler.
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class FullScreenWindowDetector
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: public rtc::RefCountedNonVirtual<FullScreenWindowDetector> {
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public:
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using ApplicationHandlerFactory =
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std::function<std::unique_ptr<FullScreenApplicationHandler>(
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DesktopCapturer::SourceId sourceId)>;
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FullScreenWindowDetector(
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ApplicationHandlerFactory application_handler_factory);
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// Returns the full-screen window in place of the original window if all the
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// criteria provided by FullScreenApplicationHandler are met, or 0 if no such
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// window found.
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DesktopCapturer::SourceId FindFullScreenWindow(
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DesktopCapturer::SourceId original_source_id);
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// The caller should call this function periodically, implementation will
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// update internal state no often than twice per second
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void UpdateWindowListIfNeeded(
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DesktopCapturer::SourceId original_source_id,
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rtc::FunctionView<bool(DesktopCapturer::SourceList*)> get_sources);
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static rtc::scoped_refptr<FullScreenWindowDetector>
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CreateFullScreenWindowDetector();
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protected:
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std::unique_ptr<FullScreenApplicationHandler> app_handler_;
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private:
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void CreateApplicationHandlerIfNeeded(DesktopCapturer::SourceId source_id);
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ApplicationHandlerFactory application_handler_factory_;
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int64_t last_update_time_ms_;
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DesktopCapturer::SourceId previous_source_id_;
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// Save the source id when we fail to create an instance of
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// CreateApplicationHandlerIfNeeded to avoid redundant attempt to do it again.
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DesktopCapturer::SourceId no_handler_source_id_;
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DesktopCapturer::SourceList window_list_;
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RTC_DISALLOW_COPY_AND_ASSIGN(FullScreenWindowDetector);
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};
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_FULL_SCREEN_WINDOW_DETECTOR_H_
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