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 41 namespace android { 42 43 // --------------------------------------------------------------------------- 44 45 class Client; 46 class GLExtensions; 47 48 // --------------------------------------------------------------------------- 49 50 class Layer : public LayerBaseClient 51 { 52 public: 53 Layer(SurfaceFlinger* flinger, DisplayID display, 54 const sp<Client>& client); 55 56 virtual ~Layer(); 57 getTypeId()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; needsDithering()74 virtual bool needsDithering() const { return mNeedsDithering; } isSecure()75 virtual bool isSecure() const { return mSecure; } 76 virtual bool isProtected() const; 77 virtual void onRemoved(); getLayer()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 getActiveBuffer()89 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 90 91 protected: 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 97 private: 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 Rect computeBufferCrop() const; 105 static bool getOpacityForFormat(uint32_t format); 106 107 // ----------------------------------------------------------------------- 108 109 // constants 110 sp<SurfaceTexture> mSurfaceTexture; 111 GLuint mTextureName; 112 113 // thread-safe 114 volatile int32_t mQueuedFrames; 115 116 // main thread 117 sp<GraphicBuffer> mActiveBuffer; 118 Rect mCurrentCrop; 119 uint32_t mCurrentTransform; 120 uint32_t mCurrentScalingMode; 121 bool mCurrentOpacity; 122 bool mRefreshPending; 123 bool mFrameLatencyNeeded; 124 int mFrameLatencyOffset; 125 126 struct Statistics { StatisticsStatistics127 Statistics() : timestamp(0), set(0), vsync(0) { } 128 nsecs_t timestamp; // buffer timestamp 129 nsecs_t set; // buffer displayed timestamp 130 nsecs_t vsync; // vsync immediately before set 131 }; 132 133 // protected by mLock 134 Statistics mFrameStats[128]; 135 136 // constants 137 PixelFormat mFormat; 138 const GLExtensions& mGLExtensions; 139 bool mOpaqueLayer; 140 bool mNeedsDithering; 141 142 // page-flip thread (currently main thread) 143 bool mSecure; // no screenshots 144 bool mProtectedByApp; // application requires protected path to external sink 145 Region mPostedDirtyRegion; 146 }; 147 148 // --------------------------------------------------------------------------- 149 150 }; // namespace android 151 152 #endif // ANDROID_LAYER_H 153