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 38 namespace android { 39 40 // --------------------------------------------------------------------------- 41 42 class Client; 43 class GLExtensions; 44 45 // --------------------------------------------------------------------------- 46 47 class Layer : public LayerBaseClient 48 { 49 public: 50 Layer(SurfaceFlinger* flinger, DisplayID display, 51 const sp<Client>& client); 52 53 virtual ~Layer(); 54 55 virtual const char* getTypeId() const { return "Layer"; } 56 57 // the this layer's size and format 58 status_t setBuffers(uint32_t w, uint32_t h, 59 PixelFormat format, uint32_t flags=0); 60 61 bool isFixedSize() const; 62 63 // LayerBase interface 64 virtual void setGeometry(hwc_layer_t* hwcl); 65 virtual void setPerFrameData(hwc_layer_t* hwcl); 66 virtual void onDraw(const Region& clip) const; 67 virtual uint32_t doTransaction(uint32_t transactionFlags); 68 virtual void lockPageFlip(bool& recomputeVisibleRegions); 69 virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion); 70 virtual bool isOpaque() const; 71 virtual bool needsDithering() const { return mNeedsDithering; } 72 virtual bool isSecure() const { return mSecure; } 73 virtual bool isProtected() const; 74 virtual void onRemoved(); 75 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); } 76 virtual void setName(const String8& name); 77 78 // LayerBaseClient interface 79 virtual wp<IBinder> getSurfaceTextureBinder() const; 80 81 // only for debugging 82 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 83 84 protected: 85 virtual void onFirstRef(); 86 virtual void dump(String8& result, char* scratch, size_t size) const; 87 88 private: 89 friend class SurfaceTextureLayer; 90 void onFrameQueued(); 91 virtual sp<ISurface> createSurface(); 92 uint32_t getEffectiveUsage(uint32_t usage) const; 93 uint32_t getTransformHint() const; 94 bool isCropped() const; 95 static bool getOpacityForFormat(uint32_t format); 96 97 // ----------------------------------------------------------------------- 98 99 // constants 100 sp<SurfaceTextureLayer> mSurfaceTexture; 101 GLuint mTextureName; 102 103 // thread-safe 104 volatile int32_t mQueuedFrames; 105 106 // main thread 107 sp<GraphicBuffer> mActiveBuffer; 108 GLfloat mTextureMatrix[16]; 109 Rect mCurrentCrop; 110 uint32_t mCurrentTransform; 111 uint32_t mCurrentScalingMode; 112 bool mCurrentOpacity; 113 114 // constants 115 PixelFormat mFormat; 116 const GLExtensions& mGLExtensions; 117 bool mOpaqueLayer; 118 bool mNeedsDithering; 119 120 // page-flip thread (currently main thread) 121 bool mSecure; // no screenshots 122 bool mProtectedByApp; // application requires protected path to external sink 123 Region mPostedDirtyRegion; 124 125 // binder thread, transaction thread 126 mutable Mutex mLock; 127 }; 128 129 // --------------------------------------------------------------------------- 130 131 }; // namespace android 132 133 #endif // ANDROID_LAYER_H 134
