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139 lines
4.0 KiB
C++
139 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_IMAGECLIENT_H
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#define MOZILLA_GFX_IMAGECLIENT_H
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#include "mozilla/layers/LayersSurfaces.h"
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#include "mozilla/layers/CompositableClient.h"
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#include "mozilla/layers/TextureClient.h"
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#include "gfxPattern.h"
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namespace mozilla {
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namespace layers {
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class ImageContainer;
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class ImageLayer;
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class PlanarYCbCrImage;
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/**
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* Image clients are used by basic image layers on the content thread, they
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* always match with an ImageHost on the compositor thread. See
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* CompositableClient.h for information on connecting clients to hosts.
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*/
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class ImageClient : public CompositableClient
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{
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public:
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/**
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* Creates, configures, and returns a new image client. If necessary, a
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* message will be sent to the compositor to create a corresponding image
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* host.
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*/
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static TemporaryRef<ImageClient> CreateImageClient(LayersBackend aBackendType,
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CompositableType aImageHostType,
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CompositableForwarder* aFwd,
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TextureFlags aFlags);
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virtual ~ImageClient() {}
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/**
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* Update this ImageClient from aContainer in aLayer
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* returns false if this is the wrong kind of ImageClient for aContainer.
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* Note that returning true does not necessarily imply success
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*/
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virtual bool UpdateImage(ImageContainer* aContainer, uint32_t aContentFlags) = 0;
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/**
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* Notify the compositor that this image client has been updated
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*/
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virtual void Updated() = 0;
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/**
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* The picture rect is the area of the texture which makes up the image. That
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* is, the area that should be composited. In texture space.
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*/
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virtual void UpdatePictureRect(nsIntRect aPictureRect);
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virtual already_AddRefed<Image> CreateImage(const uint32_t *aFormats,
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uint32_t aNumFormats);
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protected:
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ImageClient(CompositableForwarder* aFwd, CompositableType aType);
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gfxPattern::GraphicsFilter mFilter;
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CompositableType mType;
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int32_t mLastPaintedImageSerial;
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nsIntRect mPictureRect;
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};
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/**
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* An image client which uses a single texture client, may be single or double
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* buffered. (As opposed to using two texture clients for buffering, as in
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* ContentClientDoubleBuffered, or using multiple clients for YCbCr or tiled
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* images).
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*/
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class ImageClientSingle : public ImageClient
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{
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public:
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ImageClientSingle(CompositableForwarder* aFwd,
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TextureFlags aFlags,
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CompositableType aType);
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virtual bool UpdateImage(ImageContainer* aContainer, uint32_t aContentFlags);
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void EnsureTextureClient(TextureClientType aType);
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virtual void Updated();
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virtual void SetDescriptorFromReply(TextureIdentifier aTextureId,
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const SurfaceDescriptor& aDescriptor) MOZ_OVERRIDE
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{
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mTextureClient->SetDescriptorFromReply(aDescriptor);
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}
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virtual TextureInfo GetTextureInfo() const MOZ_OVERRIDE
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{
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return mTextureInfo;
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}
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private:
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RefPtr<TextureClient> mTextureClient;
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TextureInfo mTextureInfo;
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};
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/**
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* Image class to be used for async image uploads using the image bridge
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* protocol.
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* We store the ImageBridge id in the TextureClientIdentifier.
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*/
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class ImageClientBridge : public ImageClient
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{
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public:
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ImageClientBridge(CompositableForwarder* aFwd,
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TextureFlags aFlags);
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virtual bool UpdateImage(ImageContainer* aContainer, uint32_t aContentFlags);
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virtual bool Connect() { return false; }
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virtual void Updated() {}
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void SetLayer(ShadowableLayer* aLayer)
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{
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mLayer = aLayer;
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}
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virtual TextureInfo GetTextureInfo() const MOZ_OVERRIDE
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{
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return TextureInfo(mType);
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}
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protected:
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uint64_t mAsyncContainerID;
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ShadowableLayer* mLayer;
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};
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}
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}
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#endif
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