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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/thebes/SoftwareVsyncSource.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/thebes/SoftwareVsyncSource.h')
-rw-r--r-- | gfx/thebes/SoftwareVsyncSource.h | 53 |
1 files changed, 53 insertions, 0 deletions
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<CancelableRunnable> mCurrentVsyncTask; // only access on vsync thread + bool mVsyncEnabled; // Only access on main thread + + private: + DataMutex<TimeDuration> mVsyncRate; // can be accessed on any thread +}; + +} // namespace mozilla::gfx + +#endif /* GFX_SOFTWARE_VSYNC_SOURCE_H */ |