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 FreezeLock; 43 class Client; 44 class GLExtensions; 45 46 // --------------------------------------------------------------------------- 47 48 class Layer : public LayerBaseClient 49 { 50 public: 51 Layer(SurfaceFlinger* flinger, DisplayID display, 52 const sp<Client>& client); 53 54 virtual ~Layer(); 55 getTypeId()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; needsDithering()72 virtual bool needsDithering() const { return mNeedsDithering; } isSecure()73 virtual bool isSecure() const { return mSecure; } 74 virtual bool isProtected() const; 75 virtual void onRemoved(); getLayer()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 // only for debugging getFreezeLock()83 inline const sp<FreezeLock>& getFreezeLock() const { return mFreezeLock; } getActiveBuffer()84 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 85 86 protected: 87 virtual void onFirstRef(); 88 virtual void dump(String8& result, char* scratch, size_t size) const; 89 90 private: 91 friend class SurfaceTextureLayer; 92 void onFrameQueued(); 93 virtual sp<ISurface> createSurface(); 94 uint32_t getEffectiveUsage(uint32_t usage) const; 95 uint32_t getTransformHint() const; 96 bool isCropped() const; 97 static bool getOpacityForFormat(uint32_t format); 98 99 // ----------------------------------------------------------------------- 100 101 // constants 102 sp<SurfaceTextureLayer> mSurfaceTexture; 103 GLuint mTextureName; 104 105 // thread-safe 106 volatile int32_t mQueuedFrames; 107 108 // main thread 109 sp<GraphicBuffer> mActiveBuffer; 110 GLfloat mTextureMatrix[16]; 111 Rect mCurrentCrop; 112 uint32_t mCurrentTransform; 113 uint32_t mCurrentScalingMode; 114 bool mCurrentOpacity; 115 116 // constants 117 PixelFormat mFormat; 118 const GLExtensions& mGLExtensions; 119 bool mOpaqueLayer; 120 bool mNeedsDithering; 121 122 // page-flip thread (currently main thread) 123 bool mSecure; // no screenshots 124 bool mProtectedByApp; // application requires protected path to external sink 125 Region mPostedDirtyRegion; 126 127 // page-flip thread and transaction thread (currently main thread) 128 sp<FreezeLock> mFreezeLock; 129 130 // binder thread, transaction thread 131 mutable Mutex mLock; 132 }; 133 134 // --------------------------------------------------------------------------- 135 136 }; // namespace android 137 138 #endif // ANDROID_LAYER_H 139