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Diffstat (limited to 'services/surfaceflinger/Layer.h')
| -rw-r--r-- | services/surfaceflinger/Layer.h | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h new file mode 100644 index 0000000..e1d283b --- /dev/null +++ b/services/surfaceflinger/Layer.h @@ -0,0 +1,239 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_LAYER_H +#define ANDROID_LAYER_H + +#include <stdint.h> +#include <sys/types.h> + +#include <ui/GraphicBuffer.h> +#include <ui/PixelFormat.h> +#include <pixelflinger/pixelflinger.h> + +#include <EGL/egl.h> +#include <EGL/eglext.h> +#include <GLES/gl.h> +#include <GLES/glext.h> + +#include "LayerBase.h" +#include "Transform.h" +#include "TextureManager.h" + +namespace android { + +// --------------------------------------------------------------------------- + +class FreezeLock; +class Client; +class GLExtensions; +class UserClient; + +// --------------------------------------------------------------------------- + +class Layer : public LayerBaseClient +{ +public: + Layer(SurfaceFlinger* flinger, DisplayID display, + const sp<Client>& client); + + virtual ~Layer(); + + virtual const char* getTypeId() const { return "Layer"; } + + // the this layer's size and format + status_t setBuffers(uint32_t w, uint32_t h, + PixelFormat format, uint32_t flags=0); + + // associate a UserClient to this Layer + status_t setToken(const sp<UserClient>& uc, SharedClient* sc, int32_t idx); + int32_t getToken() const; + sp<UserClient> getClient() const; + + // Set this Layer's buffers size + void setBufferSize(uint32_t w, uint32_t h); + bool isFixedSize() const; + + // LayerBase interface + virtual void onDraw(const Region& clip) const; + virtual uint32_t doTransaction(uint32_t transactionFlags); + virtual void lockPageFlip(bool& recomputeVisibleRegions); + virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion); + virtual void finishPageFlip(); + virtual bool needsBlending() const { return mNeedsBlending; } + virtual bool needsDithering() const { return mNeedsDithering; } + virtual bool needsFiltering() const; + virtual bool isSecure() const { return mSecure; } + virtual sp<Surface> createSurface() const; + virtual status_t ditch(); + virtual void onRemoved(); + + // only for debugging + inline sp<GraphicBuffer> getBuffer(int i) const { + return mBufferManager.getBuffer(i); } + // only for debugging + inline const sp<FreezeLock>& getFreezeLock() const { + return mFreezeLock; } + +protected: + virtual void dump(String8& result, char* scratch, size_t size) const; + +private: + void reloadTexture(const Region& dirty); + uint32_t getEffectiveUsage(uint32_t usage) const; + sp<GraphicBuffer> requestBuffer(int bufferIdx, + uint32_t w, uint32_t h, uint32_t format, uint32_t usage); + status_t setBufferCount(int bufferCount); + + // ----------------------------------------------------------------------- + + class SurfaceLayer : public LayerBaseClient::Surface { + public: + SurfaceLayer(const sp<SurfaceFlinger>& flinger, const sp<Layer>& owner); + ~SurfaceLayer(); + private: + virtual sp<GraphicBuffer> requestBuffer(int bufferIdx, + uint32_t w, uint32_t h, uint32_t format, uint32_t usage); + virtual status_t setBufferCount(int bufferCount); + sp<Layer> getOwner() const { + return static_cast<Layer*>(Surface::getOwner().get()); + } + }; + friend class SurfaceLayer; + + // ----------------------------------------------------------------------- + + class ClientRef { + ClientRef(const ClientRef& rhs); + ClientRef& operator = (const ClientRef& rhs); + mutable Mutex mLock; + // binder thread, page-flip thread + sp<SharedBufferServer> mControlBlock; + wp<UserClient> mUserClient; + int32_t mToken; + public: + ClientRef(); + ~ClientRef(); + int32_t getToken() const; + sp<UserClient> getClient() const; + status_t setToken(const sp<UserClient>& uc, + const sp<SharedBufferServer>& sharedClient, int32_t token); + sp<UserClient> getUserClientUnsafe() const; + class Access { + Access(const Access& rhs); + Access& operator = (const Access& rhs); + sp<UserClient> mUserClientStrongRef; + sp<SharedBufferServer> mControlBlock; + public: + Access(const ClientRef& ref); + ~Access(); + inline SharedBufferServer* get() const { return mControlBlock.get(); } + }; + friend class Access; + }; + + // ----------------------------------------------------------------------- + + class BufferManager { + static const size_t NUM_BUFFERS = 2; + struct BufferData { + sp<GraphicBuffer> buffer; + Image texture; + }; + // this lock protect mBufferData[].buffer but since there + // is very little contention, we have only one like for + // the whole array, we also use it to protect mNumBuffers. + mutable Mutex mLock; + BufferData mBufferData[SharedBufferStack::NUM_BUFFER_MAX]; + size_t mNumBuffers; + Texture mFailoverTexture; + TextureManager& mTextureManager; + ssize_t mActiveBuffer; + bool mFailover; + static status_t destroyTexture(Image* tex, EGLDisplay dpy); + + public: + static size_t getDefaultBufferCount() { return NUM_BUFFERS; } + BufferManager(TextureManager& tm); + ~BufferManager(); + + // detach/attach buffer from/to given index + sp<GraphicBuffer> detachBuffer(size_t index); + status_t attachBuffer(size_t index, const sp<GraphicBuffer>& buffer); + // resize the number of active buffers + status_t resize(size_t size); + + // ---------------------------------------------- + // must be called from GL thread + + // set/get active buffer index + status_t setActiveBufferIndex(size_t index); + size_t getActiveBufferIndex() const; + // return the active buffer + sp<GraphicBuffer> getActiveBuffer() const; + // return the active texture (or fail-over) + Texture getActiveTexture() const; + // frees resources associated with all buffers + status_t destroy(EGLDisplay dpy); + // load bitmap data into the active buffer + status_t loadTexture(const Region& dirty, const GGLSurface& t); + // make active buffer an EGLImage if needed + status_t initEglImage(EGLDisplay dpy, + const sp<GraphicBuffer>& buffer); + + // ---------------------------------------------- + // only for debugging + sp<GraphicBuffer> getBuffer(size_t index) const; + }; + + // ----------------------------------------------------------------------- + + // thread-safe + ClientRef mUserClientRef; + + // constants + sp<Surface> mSurface; + PixelFormat mFormat; + const GLExtensions& mGLExtensions; + bool mNeedsBlending; + bool mNeedsDithering; + + // page-flip thread (currently main thread) + bool mSecure; + Region mPostedDirtyRegion; + + // page-flip thread and transaction thread (currently main thread) + sp<FreezeLock> mFreezeLock; + + // see threading usage in declaration + TextureManager mTextureManager; + BufferManager mBufferManager; + + // binder thread, transaction thread + mutable Mutex mLock; + uint32_t mWidth; + uint32_t mHeight; + uint32_t mReqWidth; + uint32_t mReqHeight; + uint32_t mReqFormat; + bool mFixedSize; +}; + +// --------------------------------------------------------------------------- + +}; // namespace android + +#endif // ANDROID_LAYER_H |