f15a83f581
This change adds a crop rectangle specified in window coordinates to the layer state. The all window pixels outside this crop rectangle are treated as though they were fully transparent. This change also adds the plumbing necessary for WindowManager to set that crop. Change-Id: I582bc445dc8c97d4c943d4db8d582a6ef5a66081
153 lines
4.5 KiB
C++
153 lines
4.5 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 <gui/SurfaceTexture.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 "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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class Layer : public LayerBaseClient
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{
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public:
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Layer(SurfaceFlinger* flinger, DisplayID display,
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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(hwc_layer_t* hwcl);
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virtual void setPerFrameData(hwc_layer_t* hwcl);
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virtual void onDraw(const Region& clip) const;
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virtual uint32_t doTransaction(uint32_t transactionFlags);
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virtual void lockPageFlip(bool& recomputeVisibleRegions);
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virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
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virtual bool isOpaque() const;
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virtual bool needsDithering() const { return mNeedsDithering; }
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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 void validateVisibility(const Transform& globalTransform);
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// LayerBaseClient interface
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virtual wp<IBinder> getSurfaceTextureBinder() const;
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virtual void onLayerDisplayed();
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virtual bool onPreComposition();
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// only for debugging
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inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
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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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friend class SurfaceTextureLayer;
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void onFrameQueued();
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virtual sp<ISurface> createSurface();
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uint32_t getEffectiveUsage(uint32_t usage) const;
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uint32_t getTransformHint() 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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// -----------------------------------------------------------------------
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// constants
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sp<SurfaceTexture> mSurfaceTexture;
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GLuint mTextureName;
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// thread-safe
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volatile int32_t mQueuedFrames;
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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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int mFrameLatencyOffset;
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struct Statistics {
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Statistics() : timestamp(0), set(0), vsync(0) { }
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nsecs_t timestamp; // buffer timestamp
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nsecs_t set; // buffer displayed timestamp
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nsecs_t vsync; // vsync immediately before set
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};
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// protected by mLock
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Statistics mFrameStats[128];
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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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bool mNeedsDithering;
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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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Region mPostedDirtyRegion;
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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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