Layer.h revision 99ce5cdeb383216dee95af4d90e47406b0948ea1
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 virtual bool onPreComposition(); 84 85 // only for debugging 86 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 87 88protected: 89 virtual void onFirstRef(); 90 virtual void dump(String8& result, char* scratch, size_t size) const; 91 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const; 92 virtual void clearStats(); 93 94private: 95 friend class SurfaceTextureLayer; 96 void onFrameQueued(); 97 virtual sp<ISurface> createSurface(); 98 uint32_t getEffectiveUsage(uint32_t usage) const; 99 uint32_t getTransformHint() const; 100 bool isCropped() const; 101 static bool getOpacityForFormat(uint32_t format); 102 103 // ----------------------------------------------------------------------- 104 105 // constants 106 sp<SurfaceTextureLayer> mSurfaceTexture; 107 GLuint mTextureName; 108 109 // thread-safe 110 volatile int32_t mQueuedFrames; 111 112 // main thread 113 sp<GraphicBuffer> mActiveBuffer; 114 GLfloat mTextureMatrix[16]; 115 Rect mCurrentCrop; 116 uint32_t mCurrentTransform; 117 uint32_t mCurrentScalingMode; 118 bool mCurrentOpacity; 119 size_t mRefreshPending; 120 bool mFrameLatencyNeeded; 121 int mFrameLatencyOffset; 122 123 struct Statistics { 124 Statistics() : timestamp(0), set(0), vsync(0) { } 125 nsecs_t timestamp; // buffer timestamp 126 nsecs_t set; // buffer displayed timestamp 127 nsecs_t vsync; // vsync immediately before set 128 }; 129 130 // protected by mLock 131 Statistics mFrameStats[128]; 132 133 // constants 134 PixelFormat mFormat; 135 const GLExtensions& mGLExtensions; 136 bool mOpaqueLayer; 137 bool mNeedsDithering; 138 139 // page-flip thread (currently main thread) 140 bool mSecure; // no screenshots 141 bool mProtectedByApp; // application requires protected path to external sink 142 Region mPostedDirtyRegion; 143}; 144 145// --------------------------------------------------------------------------- 146 147}; // namespace android 148 149#endif // ANDROID_LAYER_H 150