Layer.h revision e8696a40e09b24b634214684d18526187b316a2f
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 38namespace android { 39 40// --------------------------------------------------------------------------- 41 42class Client; 43class GLExtensions; 44 45// --------------------------------------------------------------------------- 46 47class Layer : public LayerBaseClient 48{ 49public: 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 virtual void onLayerDisplayed(); 82 83 // only for debugging 84 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 85 86protected: 87 virtual void onFirstRef(); 88 virtual void dump(String8& result, char* scratch, size_t size) const; 89 90private: 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 bool mFrameLatencyNeeded; 116 int mFrameLatencyOffset; 117 int64_t mFrameLatencies[128]; 118 119 // constants 120 PixelFormat mFormat; 121 const GLExtensions& mGLExtensions; 122 bool mOpaqueLayer; 123 bool mNeedsDithering; 124 125 // page-flip thread (currently main thread) 126 bool mSecure; // no screenshots 127 bool mProtectedByApp; // application requires protected path to external sink 128 Region mPostedDirtyRegion; 129 130 // binder thread, transaction thread 131 mutable Mutex mLock; 132}; 133 134// --------------------------------------------------------------------------- 135 136}; // namespace android 137 138#endif // ANDROID_LAYER_H 139