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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/thebes/SoftwareVsyncSource.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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/Monitor.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/TimeStamp.h"
+#include "base/thread.h"
+#include "nsISupportsImpl.h"
+#include "VsyncSource.h"
+
+class SoftwareDisplay final : public mozilla::gfx::VsyncSource::Display
+{
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SoftwareDisplay)
+
+public:
+ SoftwareDisplay();
+ virtual void EnableVsync() override;
+ virtual void DisableVsync() override;
+ virtual bool IsVsyncEnabled() override;
+ bool IsInSoftwareVsyncThread();
+ virtual void NotifyVsync(mozilla::TimeStamp aVsyncTimestamp) override;
+ virtual mozilla::TimeDuration GetVsyncRate() override;
+ void ScheduleNextVsync(mozilla::TimeStamp aVsyncTimestamp);
+ void Shutdown() override;
+
+protected:
+ ~SoftwareDisplay();
+
+private:
+ mozilla::TimeDuration mVsyncRate;
+ // Use a chromium thread because nsITimers* fire on the main thread
+ base::Thread* mVsyncThread;
+ RefPtr<mozilla::CancelableRunnable> mCurrentVsyncTask; // only access on vsync thread
+ bool mVsyncEnabled; // Only access on main thread
+}; // SoftwareDisplay
+
+// 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 mozilla::gfx::VsyncSource
+{
+public:
+ SoftwareVsyncSource();
+ ~SoftwareVsyncSource();
+
+ virtual Display& GetGlobalDisplay() override
+ {
+ MOZ_ASSERT(mGlobalDisplay != nullptr);
+ return *mGlobalDisplay;
+ }
+
+private:
+ RefPtr<SoftwareDisplay> mGlobalDisplay;
+};
+
+#endif /* GFX_SOFTWARE_VSYNC_SOURCE_H */