Layer.h revision cbb1a95819ec302ae15e4a1162a8b1349ae5c33e
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 <utils/Timers.h> 26 27#include <ui/GraphicBuffer.h> 28#include <ui/PixelFormat.h> 29 30#include <gui/ISurfaceComposerClient.h> 31 32#include <EGL/egl.h> 33#include <EGL/eglext.h> 34#include <GLES/gl.h> 35#include <GLES/glext.h> 36 37#include "LayerBase.h" 38#include "SurfaceTextureLayer.h" 39#include "Transform.h" 40 41namespace android { 42 43// --------------------------------------------------------------------------- 44 45class Client; 46class GLExtensions; 47 48// --------------------------------------------------------------------------- 49 50class Layer : public LayerBaseClient 51{ 52public: 53 Layer(SurfaceFlinger* flinger, DisplayID display, 54 const sp<Client>& client); 55 56 virtual ~Layer(); 57 58 virtual const char* getTypeId() const { return "Layer"; } 59 60 // the this layer's size and format 61 status_t setBuffers(uint32_t w, uint32_t h, 62 PixelFormat format, uint32_t flags=0); 63 64 bool isFixedSize() const; 65 66 // LayerBase interface 67 virtual void setGeometry(hwc_layer_t* hwcl); 68 virtual void setPerFrameData(hwc_layer_t* hwcl); 69 virtual void onDraw(const Region& clip) const; 70 virtual uint32_t doTransaction(uint32_t transactionFlags); 71 virtual void lockPageFlip(bool& recomputeVisibleRegions); 72 virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion); 73 virtual bool isOpaque() const; 74 virtual bool needsDithering() const { return mNeedsDithering; } 75 virtual bool isSecure() const { return mSecure; } 76 virtual bool isProtected() const; 77 virtual void onRemoved(); 78 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); } 79 virtual void setName(const String8& name); 80 virtual void validateVisibility(const Transform& globalTransform); 81 82 // LayerBaseClient interface 83 virtual wp<IBinder> getSurfaceTextureBinder() const; 84 85 virtual void onLayerDisplayed(); 86 virtual bool onPreComposition(); 87 88 // only for debugging 89 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 90 91protected: 92 virtual void onFirstRef(); 93 virtual void dump(String8& result, char* scratch, size_t size) const; 94 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const; 95 virtual void clearStats(); 96 97private: 98 friend class SurfaceTextureLayer; 99 void onFrameQueued(); 100 virtual sp<ISurface> createSurface(); 101 uint32_t getEffectiveUsage(uint32_t usage) const; 102 uint32_t getTransformHint() const; 103 bool isCropped() const; 104 static bool getOpacityForFormat(uint32_t format); 105 106 // ----------------------------------------------------------------------- 107 108 // constants 109 sp<SurfaceTexture> mSurfaceTexture; 110 GLuint mTextureName; 111 112 // thread-safe 113 volatile int32_t mQueuedFrames; 114 115 // main thread 116 sp<GraphicBuffer> mActiveBuffer; 117 Rect mCurrentCrop; 118 uint32_t mCurrentTransform; 119 uint32_t mCurrentScalingMode; 120 bool mCurrentOpacity; 121 bool mRefreshPending; 122 bool mFrameLatencyNeeded; 123 int mFrameLatencyOffset; 124 125 struct Statistics { 126 Statistics() : timestamp(0), set(0), vsync(0) { } 127 nsecs_t timestamp; // buffer timestamp 128 nsecs_t set; // buffer displayed timestamp 129 nsecs_t vsync; // vsync immediately before set 130 }; 131 132 // protected by mLock 133 Statistics mFrameStats[128]; 134 135 // constants 136 PixelFormat mFormat; 137 const GLExtensions& mGLExtensions; 138 bool mOpaqueLayer; 139 bool mNeedsDithering; 140 141 // page-flip thread (currently main thread) 142 bool mSecure; // no screenshots 143 bool mProtectedByApp; // application requires protected path to external sink 144 Region mPostedDirtyRegion; 145}; 146 147// --------------------------------------------------------------------------- 148 149}; // namespace android 150 151#endif // ANDROID_LAYER_H 152