зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
1.8 KiB
C++
69 строки
1.8 KiB
C++
/* -*- 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/. */
|
|
|
|
#include "mozilla/layers/TextureSourceProvider.h"
|
|
#include "mozilla/layers/TextureHost.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
TextureSourceProvider::~TextureSourceProvider()
|
|
{
|
|
ReadUnlockTextures();
|
|
}
|
|
|
|
void
|
|
TextureSourceProvider::ReadUnlockTextures()
|
|
{
|
|
for (auto& texture : mUnlockAfterComposition) {
|
|
texture->ReadUnlock();
|
|
}
|
|
mUnlockAfterComposition.Clear();
|
|
}
|
|
|
|
void
|
|
TextureSourceProvider::UnlockAfterComposition(TextureHost* aTexture)
|
|
{
|
|
mUnlockAfterComposition.AppendElement(aTexture);
|
|
}
|
|
|
|
bool
|
|
TextureSourceProvider::NotifyNotUsedAfterComposition(TextureHost* aTextureHost)
|
|
{
|
|
mNotifyNotUsedAfterComposition.AppendElement(aTextureHost);
|
|
|
|
// If Compositor holds many TextureHosts without compositing,
|
|
// the TextureHosts should be flushed to reduce memory consumption.
|
|
const int thresholdCount = 5;
|
|
const double thresholdSec = 2.0f;
|
|
if (mNotifyNotUsedAfterComposition.Length() > thresholdCount) {
|
|
TimeStamp lastCompositionEndTime = GetLastCompositionEndTime();
|
|
TimeDuration duration = lastCompositionEndTime ? TimeStamp::Now() - lastCompositionEndTime : TimeDuration();
|
|
// Check if we could flush
|
|
if (duration.ToSeconds() > thresholdSec) {
|
|
FlushPendingNotifyNotUsed();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
TextureSourceProvider::FlushPendingNotifyNotUsed()
|
|
{
|
|
for (auto& textureHost : mNotifyNotUsedAfterComposition) {
|
|
textureHost->CallNotifyNotUsed();
|
|
}
|
|
mNotifyNotUsedAfterComposition.Clear();
|
|
}
|
|
|
|
void
|
|
TextureSourceProvider::Destroy()
|
|
{
|
|
ReadUnlockTextures();
|
|
}
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|