Layer.h revision 9913b9941ef90a98d826f3338c0a1ec3e4497b8c
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 "FrameTracker.h" 38#include "LayerBase.h" 39#include "SurfaceTextureLayer.h" 40#include "Transform.h" 41 42namespace android { 43 44// --------------------------------------------------------------------------- 45 46class Client; 47class GLExtensions; 48 49// --------------------------------------------------------------------------- 50 51class Layer : public LayerBaseClient, 52 public SurfaceTexture::FrameAvailableListener 53{ 54public: 55 Layer(SurfaceFlinger* flinger, const sp<Client>& client); 56 virtual ~Layer(); 57 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(const sp<const DisplayDevice>& hw, 68 HWComposer::HWCLayerInterface& layer); 69 virtual void setPerFrameData(const sp<const DisplayDevice>& hw, 70 HWComposer::HWCLayerInterface& layer); 71 virtual void setAcquireFence(const sp<const DisplayDevice>& hw, 72 HWComposer::HWCLayerInterface& layer); 73 virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw, 74 HWComposer::HWCLayerInterface* layer); 75 virtual bool onPreComposition(); 76 virtual void onPostComposition(); 77 78 virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const; 79 virtual uint32_t doTransaction(uint32_t transactionFlags); 80 virtual Region latchBuffer(bool& recomputeVisibleRegions); 81 virtual bool isOpaque() const; 82 virtual bool isSecure() const { return mSecure; } 83 virtual bool isProtected() const; 84 virtual void onRemoved(); 85 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); } 86 virtual void setName(const String8& name); 87 virtual bool isVisible() const; 88 89 // LayerBaseClient interface 90 virtual wp<IBinder> getSurfaceTextureBinder() const; 91 92 // only for debugging 93 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; } 94 95 // Updates the transform hint in our SurfaceTexture to match 96 // the current orientation of the display device. 97 virtual void updateTransformHint(const sp<const DisplayDevice>& hw) const; 98 99protected: 100 virtual void onFirstRef(); 101 virtual void dump(String8& result, char* scratch, size_t size) const; 102 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const; 103 virtual void clearStats(); 104 105private: 106 friend class SurfaceTextureLayer; 107 virtual sp<ISurface> createSurface(); 108 uint32_t getEffectiveUsage(uint32_t usage) const; 109 bool isCropped() const; 110 Rect computeBufferCrop() const; 111 static bool getOpacityForFormat(uint32_t format); 112 113 // Interface implementation for SurfaceTexture::FrameAvailableListener 114 virtual void onFrameAvailable(); 115 116 // ----------------------------------------------------------------------- 117 118 // constants 119 sp<SurfaceTexture> mSurfaceTexture; 120 GLuint mTextureName; 121 122 // thread-safe 123 volatile int32_t mQueuedFrames; 124 125 // main thread 126 sp<GraphicBuffer> mActiveBuffer; 127 Rect mCurrentCrop; 128 uint32_t mCurrentTransform; 129 uint32_t mCurrentScalingMode; 130 bool mCurrentOpacity; 131 bool mRefreshPending; 132 bool mFrameLatencyNeeded; 133 FrameTracker mFrameTracker; 134 135 // constants 136 PixelFormat mFormat; 137 const GLExtensions& mGLExtensions; 138 bool mOpaqueLayer; 139 140 // page-flip thread (currently main thread) 141 bool mSecure; // no screenshots 142 bool mProtectedByApp; // application requires protected path to external sink 143}; 144 145// --------------------------------------------------------------------------- 146 147}; // namespace android 148 149#endif // ANDROID_LAYER_H 150