gecko/gfx/layers/client/ClientImageLayer.cpp

186 lines
5.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; 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 "ClientLayerManager.h" // for ClientLayerManager, etc
#include "ImageContainer.h" // for AutoLockImage, etc
#include "ImageLayers.h" // for ImageLayer
#include "mozilla/Attributes.h" // for MOZ_OVERRIDE
#include "mozilla/RefPtr.h" // for RefPtr
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/ImageClient.h" // for ImageClient, etc
#include "mozilla/layers/LayersMessages.h" // for ImageLayerAttributes, etc
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "nsAutoPtr.h" // for nsRefPtr, getter_AddRefs, etc
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsDebug.h" // for NS_ASSERTION
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "nsRegion.h" // for nsIntRegion
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
class ClientImageLayer : public ImageLayer,
public ClientLayer {
public:
ClientImageLayer(ClientLayerManager* aLayerManager)
: ImageLayer(aLayerManager,
static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))
, mImageClientTypeContainer(CompositableType::BUFFER_UNKNOWN)
{
MOZ_COUNT_CTOR(ClientImageLayer);
}
protected:
virtual ~ClientImageLayer()
{
DestroyBackBuffer();
MOZ_COUNT_DTOR(ClientImageLayer);
}
virtual void SetContainer(ImageContainer* aContainer) MOZ_OVERRIDE
{
ImageLayer::SetContainer(aContainer);
mImageClientTypeContainer = CompositableType::BUFFER_UNKNOWN;
}
virtual void SetVisibleRegion(const nsIntRegion& aRegion)
{
NS_ASSERTION(ClientManager()->InConstruction(),
"Can only set properties in construction phase");
ImageLayer::SetVisibleRegion(aRegion);
}
virtual void RenderLayer();
virtual void ClearCachedResources() MOZ_OVERRIDE
{
DestroyBackBuffer();
}
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ImageLayerAttributes(mFilter, mScaleToSize, mScaleMode);
}
virtual Layer* AsLayer() { return this; }
virtual ShadowableLayer* AsShadowableLayer() { return this; }
virtual void Disconnect()
{
DestroyBackBuffer();
ClientLayer::Disconnect();
}
void DestroyBackBuffer()
{
if (mImageClient) {
mImageClient->OnDetach();
mImageClient = nullptr;
}
}
virtual CompositableClient* GetCompositableClient() MOZ_OVERRIDE
{
return mImageClient;
}
protected:
ClientLayerManager* ClientManager()
{
return static_cast<ClientLayerManager*>(mManager);
}
CompositableType GetImageClientType()
{
if (mImageClientTypeContainer != CompositableType::BUFFER_UNKNOWN) {
return mImageClientTypeContainer;
}
if (mContainer->IsAsync()) {
mImageClientTypeContainer = CompositableType::BUFFER_BRIDGE;
return mImageClientTypeContainer;
}
AutoLockImage autoLock(mContainer);
#ifdef MOZ_WIDGET_GONK
// gralloc buffer needs CompositableType::BUFFER_IMAGE_BUFFERED to prevent
// the buffer's usage conflict.
mImageClientTypeContainer = autoLock.GetImage() ?
CompositableType::BUFFER_IMAGE_BUFFERED : CompositableType::BUFFER_UNKNOWN;
#else
mImageClientTypeContainer = autoLock.GetImage() ?
CompositableType::BUFFER_IMAGE_SINGLE : CompositableType::BUFFER_UNKNOWN;
#endif
return mImageClientTypeContainer;
}
RefPtr<ImageClient> mImageClient;
CompositableType mImageClientTypeContainer;
};
void
ClientImageLayer::RenderLayer()
{
if (GetMaskLayer()) {
ToClientLayer(GetMaskLayer())->RenderLayer();
}
if (!mContainer) {
return;
}
if (mImageClient) {
mImageClient->OnTransaction();
}
if (!mImageClient ||
!mImageClient->UpdateImage(mContainer, GetContentFlags())) {
CompositableType type = GetImageClientType();
if (type == CompositableType::BUFFER_UNKNOWN) {
return;
}
TextureFlags flags = TextureFlags::FRONT;
if (mDisallowBigImage) {
flags |= TextureFlags::DISALLOW_BIGIMAGE;
}
mImageClient = ImageClient::CreateImageClient(type,
ClientManager()->AsShadowForwarder(),
flags);
if (type == CompositableType::BUFFER_BRIDGE) {
static_cast<ImageClientBridge*>(mImageClient.get())->SetLayer(this);
}
if (!mImageClient) {
return;
}
if (HasShadow() && !mContainer->IsAsync()) {
mImageClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mImageClient, this);
}
if (!mImageClient->UpdateImage(mContainer, GetContentFlags())) {
return;
}
}
if (mImageClient) {
mImageClient->OnTransaction();
}
ClientManager()->Hold(this);
}
already_AddRefed<ImageLayer>
ClientLayerManager::CreateImageLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<ClientImageLayer> layer =
new ClientImageLayer(this);
CREATE_SHADOW(Image);
return layer.forget();
}
}
}