158 lines
5.0 KiB
C++
158 lines
5.0 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_LAYER_H
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#define ANDROID_LAYER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Timers.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <gui/ISurfaceComposerClient.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include "SurfaceFlingerConsumer.h"
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#include "FrameTracker.h"
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#include "LayerBase.h"
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#include "SurfaceTextureLayer.h"
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#include "Transform.h"
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namespace android {
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// ---------------------------------------------------------------------------
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class Client;
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class GLExtensions;
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// ---------------------------------------------------------------------------
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/*
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* The Layer class is essentially a LayerBase combined with a BufferQueue.
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* A new BufferQueue and a new SurfaceFlingerConsumer are created when the
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* Layer is first referenced.
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*
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* This also implements onFrameAvailable(), which notifies SurfaceFlinger
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* that new data has arrived.
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*/
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class Layer : public LayerBaseClient,
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public SurfaceFlingerConsumer::FrameAvailableListener
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{
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public:
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Layer(SurfaceFlinger* flinger, const sp<Client>& client);
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virtual ~Layer();
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virtual const char* getTypeId() const { return "Layer"; }
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// the this layer's size and format
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status_t setBuffers(uint32_t w, uint32_t h,
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PixelFormat format, uint32_t flags=0);
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bool isFixedSize() const;
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// LayerBase interface
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virtual void setGeometry(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer);
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virtual void setPerFrameData(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer);
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virtual void setAcquireFence(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface& layer);
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virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
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HWComposer::HWCLayerInterface* layer);
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virtual bool onPreComposition();
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virtual void onPostComposition();
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virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
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virtual uint32_t doTransaction(uint32_t transactionFlags);
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virtual Region latchBuffer(bool& recomputeVisibleRegions);
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virtual bool isOpaque() const;
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virtual bool isSecure() const { return mSecure; }
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virtual bool isProtected() const;
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virtual void onRemoved();
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virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); }
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virtual void setName(const String8& name);
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virtual bool isVisible() const;
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// LayerBaseClient interface
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virtual wp<IBinder> getSurfaceTextureBinder() const;
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// only for debugging
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inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
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// Updates the transform hint in our SurfaceFlingerConsumer to match
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// the current orientation of the display device.
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virtual void updateTransformHint(const sp<const DisplayDevice>& hw) const;
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protected:
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virtual void onFirstRef();
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virtual void dump(String8& result, char* scratch, size_t size) const;
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virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const;
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virtual void clearStats();
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private:
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// Creates an instance of ISurface for this Layer.
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virtual sp<ISurface> createSurface();
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uint32_t getEffectiveUsage(uint32_t usage) const;
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bool isCropped() const;
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Rect computeBufferCrop() const;
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static bool getOpacityForFormat(uint32_t format);
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// Interface implementation for SurfaceFlingerConsumer::FrameAvailableListener
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virtual void onFrameAvailable();
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// -----------------------------------------------------------------------
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// constants
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sp<SurfaceFlingerConsumer> mSurfaceFlingerConsumer;
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GLuint mTextureName;
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// thread-safe
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volatile int32_t mQueuedFrames;
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FrameTracker mFrameTracker;
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// main thread
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sp<GraphicBuffer> mActiveBuffer;
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Rect mCurrentCrop;
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uint32_t mCurrentTransform;
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uint32_t mCurrentScalingMode;
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bool mCurrentOpacity;
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bool mRefreshPending;
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bool mFrameLatencyNeeded;
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// constants
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PixelFormat mFormat;
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const GLExtensions& mGLExtensions;
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bool mOpaqueLayer;
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// page-flip thread (currently main thread)
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bool mSecure; // no screenshots
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bool mProtectedByApp; // application requires protected path to external sink
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_LAYER_H
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