Layer.h revision 8430095879d2fa6878e68f8f12da4e704815ac09
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, const sp<Client>& client); 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(const sp<const DisplayDevice>& hw, 66 HWComposer::HWCLayerInterface& layer); 67 virtual void setPerFrameData(const sp<const DisplayDevice>& hw, 68 HWComposer::HWCLayerInterface& layer); 69 virtual void setAcquireFence(const sp<const DisplayDevice>& hw, 70 HWComposer::HWCLayerInterface& layer); 71 virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw, 72 HWComposer::HWCLayerInterface* layer); 73 virtual bool onPreComposition(); 74 virtual void onPostComposition(); 75 76 virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const; 77 virtual uint32_t doTransaction(uint32_t transactionFlags); 78 virtual Region latchBuffer(bool& recomputeVisibleRegions); 79 virtual bool isOpaque() const; 80 virtual bool isSecure() const { return mSecure; } 81 virtual bool isProtected() const; 82 virtual void onRemoved(); 83 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); } 84 virtual void setName(const String8& name); 85 virtual bool isVisible() const; 86 87 // LayerBaseClient interface 88 virtual wp<IBinder> getSurfaceTextureBinder() const; 89 90 // only for debugging 91 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 92 93 // Updates the transform hint in our SurfaceTexture to match 94 // the current orientation of the display device. 95 virtual void updateTransformHint(const sp<const DisplayDevice>& hw) const; 96 97protected: 98 virtual void onFirstRef(); 99 virtual void dump(String8& result, char* scratch, size_t size) const; 100 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const; 101 virtual void clearStats(); 102 103private: 104 friend class SurfaceTextureLayer; 105 void onFrameQueued(); 106 virtual sp<ISurface> createSurface(); 107 uint32_t getEffectiveUsage(uint32_t usage) const; 108 bool isCropped() const; 109 Rect computeBufferCrop() const; 110 static bool getOpacityForFormat(uint32_t format); 111 112 // ----------------------------------------------------------------------- 113 114 // constants 115 sp<SurfaceTexture> mSurfaceTexture; 116 GLuint mTextureName; 117 118 // thread-safe 119 volatile int32_t mQueuedFrames; 120 121 // main thread 122 sp<GraphicBuffer> mActiveBuffer; 123 Rect mCurrentCrop; 124 uint32_t mCurrentTransform; 125 uint32_t mCurrentScalingMode; 126 bool mCurrentOpacity; 127 bool mRefreshPending; 128 bool mFrameLatencyNeeded; 129 int mFrameLatencyOffset; 130 131 struct Statistics { 132 Statistics() : timestamp(0), set(0), vsync(0) { } 133 nsecs_t timestamp; // buffer timestamp 134 nsecs_t set; // buffer displayed timestamp 135 nsecs_t vsync; // vsync immediately before set 136 }; 137 138 // protected by mLock 139 Statistics mFrameStats[128]; 140 141 // constants 142 PixelFormat mFormat; 143 const GLExtensions& mGLExtensions; 144 bool mOpaqueLayer; 145 146 // page-flip thread (currently main thread) 147 bool mSecure; // no screenshots 148 bool mProtectedByApp; // application requires protected path to external sink 149}; 150 151// --------------------------------------------------------------------------- 152 153}; // namespace android 154 155#endif // ANDROID_LAYER_H 156