зеркало из https://github.com/mozilla/gecko-dev.git
132 строки
4.1 KiB
C++
132 строки
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_TEXTURECLIENT_RECYCLE_ALLOCATOR_H
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#define MOZILLA_GFX_TEXTURECLIENT_RECYCLE_ALLOCATOR_H
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#include <map>
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#include <stack>
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#include "mozilla/gfx/Types.h"
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#include "mozilla/layers/TextureForwarder.h"
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#include "mozilla/RefPtr.h"
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#include "TextureClient.h"
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#include "mozilla/Mutex.h"
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namespace mozilla {
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namespace layers {
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class TextureClientHolder;
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struct PlanarYCbCrData;
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class ITextureClientRecycleAllocator {
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protected:
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virtual ~ITextureClientRecycleAllocator() = default;
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ITextureClientRecycleAllocator)
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protected:
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friend class TextureClient;
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virtual void RecycleTextureClient(TextureClient* aClient) = 0;
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};
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class ITextureClientAllocationHelper {
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public:
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ITextureClientAllocationHelper(gfx::SurfaceFormat aFormat, gfx::IntSize aSize,
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BackendSelector aSelector,
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TextureFlags aTextureFlags,
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TextureAllocationFlags aAllocationFlags)
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: mFormat(aFormat),
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mSize(aSize),
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mSelector(aSelector),
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mTextureFlags(aTextureFlags |
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TextureFlags::RECYCLE) // Set recycle flag
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,
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mAllocationFlags(aAllocationFlags) {}
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virtual already_AddRefed<TextureClient> Allocate(
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KnowsCompositor* aAllocator) = 0;
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virtual bool IsCompatible(TextureClient* aTextureClient) = 0;
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const gfx::SurfaceFormat mFormat;
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const gfx::IntSize mSize;
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const BackendSelector mSelector;
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const TextureFlags mTextureFlags;
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const TextureAllocationFlags mAllocationFlags;
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};
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class MOZ_RAII YCbCrTextureClientAllocationHelper
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: public ITextureClientAllocationHelper {
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public:
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YCbCrTextureClientAllocationHelper(const PlanarYCbCrData& aData,
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TextureFlags aTextureFlags);
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bool IsCompatible(TextureClient* aTextureClient) override;
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already_AddRefed<TextureClient> Allocate(
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KnowsCompositor* aAllocator) override;
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protected:
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const PlanarYCbCrData& mData;
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};
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/**
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* TextureClientRecycleAllocator provides TextureClients allocation and
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* recycling capabilities. It expects allocations of same sizes and
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* attributres. If a recycled TextureClient is different from
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* requested one, the recycled one is dropped and new TextureClient is
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* allocated.
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*
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* By default this uses TextureClient::CreateForDrawing to allocate new texture
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* clients.
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*/
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class TextureClientRecycleAllocator : public ITextureClientRecycleAllocator {
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protected:
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virtual ~TextureClientRecycleAllocator();
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public:
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explicit TextureClientRecycleAllocator(KnowsCompositor* aAllocator);
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void SetMaxPoolSize(uint32_t aMax);
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// Creates and allocates a TextureClient.
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already_AddRefed<TextureClient> CreateOrRecycle(
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gfx::SurfaceFormat aFormat, gfx::IntSize aSize, BackendSelector aSelector,
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TextureFlags aTextureFlags, TextureAllocationFlags flags = ALLOC_DEFAULT);
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already_AddRefed<TextureClient> CreateOrRecycle(
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ITextureClientAllocationHelper& aHelper);
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void ShrinkToMinimumSize();
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void Destroy();
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protected:
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virtual already_AddRefed<TextureClient> Allocate(
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gfx::SurfaceFormat aFormat, gfx::IntSize aSize, BackendSelector aSelector,
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TextureFlags aTextureFlags, TextureAllocationFlags aAllocFlags);
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RefPtr<KnowsCompositor> mSurfaceAllocator;
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friend class DefaultTextureClientAllocationHelper;
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void RecycleTextureClient(TextureClient* aClient) override;
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static const uint32_t kMaxPooledSized = 2;
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uint32_t mMaxPooledSize;
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std::map<TextureClient*, RefPtr<TextureClientHolder> > mInUseClients;
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// stack is good from Graphics cache usage point of view.
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std::stack<RefPtr<TextureClientHolder> > mPooledClients;
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Mutex mLock;
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bool mIsDestroyed;
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};
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} // namespace layers
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} // namespace mozilla
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#endif /* MOZILLA_GFX_TEXTURECLIENT_RECYCLE_ALLOCATOR_H */
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