forked from mirrors/gecko-dev
150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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/. */
|
|
|
|
#include "AndroidVsync.h"
|
|
|
|
#include "AndroidBridge.h"
|
|
#include "nsTArray.h"
|
|
|
|
/**
|
|
* Implementation for the AndroidVsync class.
|
|
*/
|
|
|
|
namespace mozilla {
|
|
namespace widget {
|
|
|
|
StaticDataMutex<ThreadSafeWeakPtr<AndroidVsync>> AndroidVsync::sInstance(
|
|
"AndroidVsync::sInstance");
|
|
|
|
/* static */ RefPtr<AndroidVsync> AndroidVsync::GetInstance() {
|
|
auto weakInstance = sInstance.Lock();
|
|
RefPtr<AndroidVsync> instance(*weakInstance);
|
|
if (!instance) {
|
|
instance = new AndroidVsync();
|
|
*weakInstance = instance;
|
|
}
|
|
return instance;
|
|
}
|
|
|
|
/**
|
|
* Owned by the Java AndroidVsync instance.
|
|
*/
|
|
class AndroidVsyncSupport final
|
|
: public java::AndroidVsync::Natives<AndroidVsyncSupport> {
|
|
public:
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(AndroidVsyncSupport)
|
|
|
|
using Base = java::AndroidVsync::Natives<AndroidVsyncSupport>;
|
|
using Base::AttachNative;
|
|
using Base::DisposeNative;
|
|
|
|
explicit AndroidVsyncSupport(AndroidVsync* aAndroidVsync)
|
|
: mAndroidVsync(std::move(aAndroidVsync),
|
|
"AndroidVsyncSupport::mAndroidVsync") {}
|
|
|
|
// Called by Java
|
|
void NotifyVsync(const java::AndroidVsync::LocalRef& aInstance,
|
|
int64_t aFrameTimeNanos) {
|
|
auto androidVsync = mAndroidVsync.Lock();
|
|
if (*androidVsync) {
|
|
(*androidVsync)->NotifyVsync(aFrameTimeNanos);
|
|
}
|
|
}
|
|
|
|
// Called by the AndroidVsync destructor
|
|
void Unlink() {
|
|
auto androidVsync = mAndroidVsync.Lock();
|
|
*androidVsync = nullptr;
|
|
}
|
|
|
|
protected:
|
|
~AndroidVsyncSupport() = default;
|
|
|
|
DataMutex<AndroidVsync*> mAndroidVsync;
|
|
};
|
|
|
|
AndroidVsync::AndroidVsync() : mImpl("AndroidVsync.mImpl") {
|
|
AndroidVsyncSupport::Init();
|
|
|
|
auto impl = mImpl.Lock();
|
|
impl->mSupport = new AndroidVsyncSupport(this);
|
|
impl->mSupportJava = java::AndroidVsync::New();
|
|
AndroidVsyncSupport::AttachNative(impl->mSupportJava, impl->mSupport);
|
|
}
|
|
|
|
AndroidVsync::~AndroidVsync() {
|
|
auto impl = mImpl.Lock();
|
|
impl->mInputObservers.Clear();
|
|
impl->mRenderObservers.Clear();
|
|
impl->UpdateObservingVsync();
|
|
impl->mSupport->Unlink();
|
|
}
|
|
|
|
void AndroidVsync::RegisterObserver(Observer* aObserver, ObserverType aType) {
|
|
auto impl = mImpl.Lock();
|
|
if (aType == AndroidVsync::INPUT) {
|
|
impl->mInputObservers.AppendElement(aObserver);
|
|
} else {
|
|
impl->mRenderObservers.AppendElement(aObserver);
|
|
}
|
|
impl->UpdateObservingVsync();
|
|
}
|
|
|
|
void AndroidVsync::UnregisterObserver(Observer* aObserver, ObserverType aType) {
|
|
auto impl = mImpl.Lock();
|
|
if (aType == AndroidVsync::INPUT) {
|
|
impl->mInputObservers.RemoveElement(aObserver);
|
|
} else {
|
|
impl->mRenderObservers.RemoveElement(aObserver);
|
|
}
|
|
aObserver->Dispose();
|
|
impl->UpdateObservingVsync();
|
|
}
|
|
|
|
void AndroidVsync::Impl::UpdateObservingVsync() {
|
|
bool shouldObserve =
|
|
!mInputObservers.IsEmpty() || !mRenderObservers.IsEmpty();
|
|
if (shouldObserve != mObservingVsync) {
|
|
mObservingVsync = mSupportJava->ObserveVsync(shouldObserve);
|
|
}
|
|
}
|
|
|
|
// Always called on the Java UI thread.
|
|
void AndroidVsync::NotifyVsync(int64_t aFrameTimeNanos) {
|
|
MOZ_ASSERT(AndroidBridge::IsJavaUiThread());
|
|
|
|
// Convert aFrameTimeNanos to a TimeStamp. The value converts trivially to
|
|
// the internal ticks representation of TimeStamp_posix; both use the
|
|
// monotonic clock and are in nanoseconds.
|
|
TimeStamp timeStamp = TimeStamp::FromSystemTime(aFrameTimeNanos);
|
|
|
|
// Do not keep the lock held while calling OnVsync.
|
|
nsTArray<Observer*> observers;
|
|
{
|
|
auto impl = mImpl.Lock();
|
|
observers.AppendElements(impl->mInputObservers);
|
|
observers.AppendElements(impl->mRenderObservers);
|
|
}
|
|
for (Observer* observer : observers) {
|
|
observer->OnVsync(timeStamp);
|
|
}
|
|
}
|
|
|
|
void AndroidVsync::OnMaybeUpdateRefreshRate() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
auto impl = mImpl.Lock();
|
|
|
|
nsTArray<Observer*> observers;
|
|
observers.AppendElements(impl->mRenderObservers);
|
|
|
|
for (Observer* observer : observers) {
|
|
observer->OnMaybeUpdateRefreshRate();
|
|
}
|
|
}
|
|
|
|
} // namespace widget
|
|
} // namespace mozilla
|