зеркало из https://github.com/mozilla/gecko-dev.git
131 строка
3.6 KiB
C++
131 строка
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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_TEXTUREDIB_H
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#define MOZILLA_GFX_TEXTUREDIB_H
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#include "mozilla/layers/Compositor.h"
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#include "mozilla/layers/TextureClient.h"
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#include "mozilla/layers/TextureHost.h"
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#include "mozilla/GfxMessageUtils.h"
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#include "gfxWindowsPlatform.h"
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namespace mozilla {
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namespace layers {
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class DIBTextureData : public TextureData
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{
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public:
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virtual bool Lock(OpenMode) override { return true; }
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virtual void Unlock() override {}
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virtual void FillInfo(TextureData::Info& aInfo) const override;
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virtual already_AddRefed<gfx::DrawTarget> BorrowDrawTarget() override;
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static
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DIBTextureData* Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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LayersIPCChannel* aAllocator);
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protected:
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DIBTextureData(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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gfxWindowsSurface* aSurface)
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: mSurface(aSurface)
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, mSize(aSize)
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, mFormat(aFormat)
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{
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MOZ_ASSERT(aSurface);
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}
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RefPtr<gfxWindowsSurface> mSurface;
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gfx::IntSize mSize;
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gfx::SurfaceFormat mFormat;
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};
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/**
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* This is meant for a texture host which does a direct upload from
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* Updated to a Compositor specific DataTextureSource and therefor doesn't
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* need any specific Lock/Unlock magic.
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*/
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class TextureHostDirectUpload : public TextureHost
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{
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public:
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TextureHostDirectUpload(TextureFlags aFlags,
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gfx::SurfaceFormat aFormat,
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gfx::IntSize aSize)
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: TextureHost(aFlags)
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, mFormat(aFormat)
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, mSize(aSize)
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, mIsLocked(false)
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{ }
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virtual void DeallocateDeviceData() override;
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virtual void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual bool Lock() override;
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virtual void Unlock() override;
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virtual bool HasIntermediateBuffer() const { return true; }
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virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override;
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protected:
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RefPtr<TextureSourceProvider> mProvider;
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RefPtr<DataTextureSource> mTextureSource;
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gfx::SurfaceFormat mFormat;
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gfx::IntSize mSize;
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bool mIsLocked;
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};
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class DIBTextureHost : public TextureHostDirectUpload
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{
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public:
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DIBTextureHost(TextureFlags aFlags,
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const SurfaceDescriptorDIB& aDescriptor);
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virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
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{
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return nullptr; // TODO: cf bug 872568
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}
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protected:
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virtual void UpdatedInternal(const nsIntRegion* aRegion = nullptr) override;
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RefPtr<gfxWindowsSurface> mSurface;
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};
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class TextureHostFileMapping : public TextureHostDirectUpload
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{
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public:
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TextureHostFileMapping(TextureFlags aFlags,
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const SurfaceDescriptorFileMapping& aDescriptor);
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~TextureHostFileMapping();
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virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
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{
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MOZ_CRASH("GFX: TextureHostFileMapping::GetAsSurface not implemented");
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// Not implemented! It would be tricky to keep track of the
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// scope of the file mapping. We could do this through UserData
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// on the DataSourceSurface but we don't need this right now.
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}
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protected:
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virtual void UpdatedInternal(const nsIntRegion* aRegion = nullptr) override;
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HANDLE mFileMapping;
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};
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}
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}
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#endif /* MOZILLA_GFX_TEXTUREDIB_H */
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