From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/thebes/SoftwareVsyncSource.h | 53 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 gfx/thebes/SoftwareVsyncSource.h (limited to 'gfx/thebes/SoftwareVsyncSource.h') diff --git a/gfx/thebes/SoftwareVsyncSource.h b/gfx/thebes/SoftwareVsyncSource.h new file mode 100644 index 0000000000..0a86432db3 --- /dev/null +++ b/gfx/thebes/SoftwareVsyncSource.h @@ -0,0 +1,53 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#ifndef GFX_SOFTWARE_VSYNC_SOURCE_H +#define GFX_SOFTWARE_VSYNC_SOURCE_H + +#include "mozilla/DataMutex.h" +#include "mozilla/Monitor.h" +#include "mozilla/RefPtr.h" +#include "mozilla/TimeStamp.h" +#include "base/thread.h" +#include "nsISupportsImpl.h" +#include "VsyncSource.h" + +namespace mozilla::gfx { + +// Fallback option to use a software timer to mimic vsync. Useful for gtests +// To mimic a hardware vsync thread, we create a dedicated software timer +// vsync thread. +class SoftwareVsyncSource : public VsyncSource { + public: + explicit SoftwareVsyncSource(const TimeDuration& aInitialVsyncRate); + virtual ~SoftwareVsyncSource(); + + void EnableVsync() override; + void DisableVsync() override; + bool IsVsyncEnabled() override; + bool IsInSoftwareVsyncThread(); + void NotifyVsync(const TimeStamp& aVsyncTimestamp, + const TimeStamp& aOutputTimestamp) override; + TimeDuration GetVsyncRate() override; + void ScheduleNextVsync(TimeStamp aVsyncTimestamp); + void Shutdown() override; + + // Can be called on any thread + void SetVsyncRate(const TimeDuration& aNewRate); + + protected: + // Use a chromium thread because nsITimers* fire on the main thread + base::Thread* mVsyncThread; + RefPtr mCurrentVsyncTask; // only access on vsync thread + bool mVsyncEnabled; // Only access on main thread + + private: + DataMutex mVsyncRate; // can be accessed on any thread +}; + +} // namespace mozilla::gfx + +#endif /* GFX_SOFTWARE_VSYNC_SOURCE_H */ -- cgit v1.2.3