зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
3.0 KiB
C++
85 строки
3.0 KiB
C++
/* -*- 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_VSYNCSOURCE_H
|
|
#define GFX_VSYNCSOURCE_H
|
|
|
|
#include "nsTArray.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "mozilla/Mutex.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "nsISupportsImpl.h"
|
|
|
|
namespace mozilla {
|
|
class RefreshTimerVsyncDispatcher;
|
|
class CompositorVsyncDispatcher;
|
|
|
|
namespace gfx {
|
|
|
|
// Controls how and when to enable/disable vsync. Lives as long as the
|
|
// gfxPlatform does on the parent process
|
|
class VsyncSource
|
|
{
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VsyncSource)
|
|
|
|
typedef mozilla::RefreshTimerVsyncDispatcher RefreshTimerVsyncDispatcher;
|
|
typedef mozilla::CompositorVsyncDispatcher CompositorVsyncDispatcher;
|
|
|
|
public:
|
|
// Controls vsync unique to each display and unique on each platform
|
|
class Display {
|
|
public:
|
|
Display();
|
|
virtual ~Display();
|
|
|
|
// Notified when this display's vsync occurs, on the vsync thread
|
|
// The aVsyncTimestamp should normalize to the Vsync time that just occured
|
|
// However, different platforms give different vsync notification times.
|
|
// b2g - The vsync timestamp of the previous frame that was just displayed
|
|
// OSX - The vsync timestamp of the upcoming frame, in the future
|
|
// Windows: It's messy, see gfxWindowsPlatform.
|
|
// Android: TODO
|
|
// All platforms should normalize to the vsync that just occured.
|
|
// Large parts of Gecko assume TimeStamps should not be in the future such as animations
|
|
virtual void NotifyVsync(TimeStamp aVsyncTimestamp);
|
|
|
|
RefPtr<RefreshTimerVsyncDispatcher> GetRefreshTimerVsyncDispatcher();
|
|
|
|
void AddCompositorVsyncDispatcher(CompositorVsyncDispatcher* aCompositorVsyncDispatcher);
|
|
void RemoveCompositorVsyncDispatcher(CompositorVsyncDispatcher* aCompositorVsyncDispatcher);
|
|
void NotifyRefreshTimerVsyncStatus(bool aEnable);
|
|
virtual TimeDuration GetVsyncRate();
|
|
|
|
// These should all only be called on the main thread
|
|
virtual void EnableVsync() = 0;
|
|
virtual void DisableVsync() = 0;
|
|
virtual bool IsVsyncEnabled() = 0;
|
|
virtual void Shutdown() = 0;
|
|
|
|
private:
|
|
void UpdateVsyncStatus();
|
|
|
|
Mutex mDispatcherLock;
|
|
bool mRefreshTimerNeedsVsync;
|
|
nsTArray<RefPtr<CompositorVsyncDispatcher>> mCompositorVsyncDispatchers;
|
|
RefPtr<RefreshTimerVsyncDispatcher> mRefreshTimerVsyncDispatcher;
|
|
};
|
|
|
|
void AddCompositorVsyncDispatcher(CompositorVsyncDispatcher* aCompositorVsyncDispatcher);
|
|
void RemoveCompositorVsyncDispatcher(CompositorVsyncDispatcher* aCompositorVsyncDispatcher);
|
|
|
|
RefPtr<RefreshTimerVsyncDispatcher> GetRefreshTimerVsyncDispatcher();
|
|
virtual Display& GetGlobalDisplay() = 0; // Works across all displays
|
|
void Shutdown();
|
|
|
|
protected:
|
|
virtual ~VsyncSource() {}
|
|
};
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif /* GFX_VSYNCSOURCE_H */
|