gecko-dev/gfx/layers/TextureSourceProvider.cpp

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