Layer.h revision 25e66fc324bbc004fa8902b2d4699e41bb601104
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ANDROID_LAYER_H 18#define ANDROID_LAYER_H 19 20#include <stdint.h> 21#include <sys/types.h> 22 23#include <gui/SurfaceTexture.h> 24 25#include <pixelflinger/pixelflinger.h> 26#include <ui/GraphicBuffer.h> 27#include <ui/PixelFormat.h> 28 29#include <EGL/egl.h> 30#include <EGL/eglext.h> 31#include <GLES/gl.h> 32#include <GLES/glext.h> 33 34#include "LayerBase.h" 35#include "SurfaceTextureLayer.h" 36#include "Transform.h" 37#include <utils/Timers.h> 38 39namespace android { 40 41// --------------------------------------------------------------------------- 42 43class Client; 44class GLExtensions; 45 46// --------------------------------------------------------------------------- 47 48class Layer : public LayerBaseClient 49{ 50public: 51 Layer(SurfaceFlinger* flinger, DisplayID display, 52 const sp<Client>& client); 53 54 virtual ~Layer(); 55 56 virtual const char* getTypeId() const { return "Layer"; } 57 58 // the this layer's size and format 59 status_t setBuffers(uint32_t w, uint32_t h, 60 PixelFormat format, uint32_t flags=0); 61 62 bool isFixedSize() const; 63 64 // LayerBase interface 65 virtual void setGeometry(hwc_layer_t* hwcl); 66 virtual void setPerFrameData(hwc_layer_t* hwcl); 67 virtual void onDraw(const Region& clip) const; 68 virtual uint32_t doTransaction(uint32_t transactionFlags); 69 virtual void lockPageFlip(bool& recomputeVisibleRegions); 70 virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion); 71 virtual bool isOpaque() const; 72 virtual bool needsDithering() const { return mNeedsDithering; } 73 virtual bool isSecure() const { return mSecure; } 74 virtual bool isProtected() const; 75 virtual void onRemoved(); 76 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); } 77 virtual void setName(const String8& name); 78 79 // LayerBaseClient interface 80 virtual wp<IBinder> getSurfaceTextureBinder() const; 81 82 virtual void onLayerDisplayed(); 83 84 // only for debugging 85 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 86 87protected: 88 virtual void onFirstRef(); 89 virtual void dump(String8& result, char* scratch, size_t size) const; 90 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const; 91 virtual void clearStats(); 92 93private: 94 friend class SurfaceTextureLayer; 95 void onFrameQueued(); 96 virtual sp<ISurface> createSurface(); 97 uint32_t getEffectiveUsage(uint32_t usage) const; 98 uint32_t getTransformHint() const; 99 bool isCropped() const; 100 static bool getOpacityForFormat(uint32_t format); 101 102 // ----------------------------------------------------------------------- 103 104 // constants 105 sp<SurfaceTextureLayer> mSurfaceTexture; 106 GLuint mTextureName; 107 108 // thread-safe 109 volatile int32_t mQueuedFrames; 110 111 // main thread 112 sp<GraphicBuffer> mActiveBuffer; 113 GLfloat mTextureMatrix[16]; 114 Rect mCurrentCrop; 115 uint32_t mCurrentTransform; 116 uint32_t mCurrentScalingMode; 117 bool mCurrentOpacity; 118 bool mFrameLatencyNeeded; 119 int mFrameLatencyOffset; 120 struct Statistics { 121 Statistics() : timestamp(0), set(0), vsync(0) { } 122 nsecs_t timestamp; // buffer timestamp 123 nsecs_t set; // buffer displayed timestamp 124 nsecs_t vsync; // vsync immediately before set 125 }; 126 // protected by mLock 127 Statistics mFrameStats[128]; 128 129 // constants 130 PixelFormat mFormat; 131 const GLExtensions& mGLExtensions; 132 bool mOpaqueLayer; 133 bool mNeedsDithering; 134 135 // page-flip thread (currently main thread) 136 bool mSecure; // no screenshots 137 bool mProtectedByApp; // application requires protected path to external sink 138 Region mPostedDirtyRegion; 139}; 140 141// --------------------------------------------------------------------------- 142 143}; // namespace android 144 145#endif // ANDROID_LAYER_H 146