DisplayDevice.h revision 888c822c4cb6976aab9256c58bae9e17e3e55c5c
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_DISPLAY_DEVICE_H 18#define ANDROID_DISPLAY_DEVICE_H 19 20#include <stdlib.h> 21 22#include <ui/PixelFormat.h> 23#include <ui/Region.h> 24 25#include <EGL/egl.h> 26#include <EGL/eglext.h> 27 28#include <utils/Mutex.h> 29#include <utils/Timers.h> 30 31#include "Transform.h" 32 33namespace android { 34 35class DisplayInfo; 36class FramebufferSurface; 37class LayerBase; 38class SurfaceFlinger; 39class SurfaceTextureClient; 40 41class DisplayDevice 42{ 43public: 44 // region in layer-stack space 45 mutable Region dirtyRegion; 46 // region in screen space 47 mutable Region swapRegion; 48 // region in screen space 49 Region undefinedRegion; 50 51 enum { 52 DISPLAY_ID_MAIN = 0, 53 DISPLAY_ID_HDMI = 1 54 }; 55 56 enum { 57 PARTIAL_UPDATES = 0x00020000, // video driver feature 58 SWAP_RECTANGLE = 0x00080000, 59 }; 60 61 DisplayDevice(); 62 63 DisplayDevice( 64 const sp<SurfaceFlinger>& flinger, 65 int dpy, 66 const sp<SurfaceTextureClient>& surface, 67 EGLConfig config); 68 69 ~DisplayDevice(); 70 71 // must be called when this object is no longer needed. this will 72 // render the associated EGLSurface invalid. 73 void terminate(); 74 75 // whether this is a valid object. An invalid DisplayDevice is returned 76 // when an non existing id is requested 77 bool isValid() const; 78 79 // Flip the front and back buffers if the back buffer is "dirty". Might 80 // be instantaneous, might involve copying the frame buffer around. 81 void flip(const Region& dirty) const; 82 83 float getDpiX() const; 84 float getDpiY() const; 85 float getDensity() const; 86 int getWidth() const; 87 int getHeight() const; 88 PixelFormat getFormat() const; 89 uint32_t getFlags() const; 90 91 EGLSurface getEGLSurface() const; 92 93 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 94 Vector< sp<LayerBase> > getVisibleLayersSortedByZ() const; 95 bool getSecureLayerVisible() const; 96 97 status_t setOrientation(int orientation); 98 int getOrientation() const { return mOrientation; } 99 const Transform& getTransform() const { return mGlobalTransform; } 100 uint32_t getLayerStack() const { return mLayerStack; } 101 102 status_t compositionComplete() const; 103 104 Rect getBounds() const { 105 return Rect(mDisplayWidth, mDisplayHeight); 106 } 107 inline Rect bounds() const { return getBounds(); } 108 109 static void makeCurrent(const DisplayDevice& hw, EGLContext ctx); 110 111 /* ------------------------------------------------------------------------ 112 * blank / unplank management 113 */ 114 void releaseScreen() const; 115 void acquireScreen() const; 116 bool isScreenAcquired() const; 117 bool canDraw() const; 118 119 /* ------------------------------------------------------------------------ 120 * Debugging 121 */ 122 uint32_t getPageFlipCount() const; 123 void dump(String8& res) const; 124 125 inline bool operator < (const DisplayDevice& rhs) const { 126 return mId < rhs.mId; 127 } 128 129private: 130 void init(EGLConfig config); 131 132 /* 133 * Constants, set during initialization 134 */ 135 sp<SurfaceFlinger> mFlinger; 136 int32_t mId; 137 138 // ANativeWindow this display is rendering into 139 sp<SurfaceTextureClient> mNativeWindow; 140 141 // set if mNativeWindow is a FramebufferSurface 142 sp<FramebufferSurface> mFramebufferSurface; 143 144 EGLDisplay mDisplay; 145 EGLSurface mSurface; 146 EGLContext mContext; 147 float mDpiX; 148 float mDpiY; 149 float mDensity; 150 int mDisplayWidth; 151 int mDisplayHeight; 152 PixelFormat mFormat; 153 uint32_t mFlags; 154 mutable uint32_t mPageFlipCount; 155 156 /* 157 * Can only accessed from the main thread, these members 158 * don't need synchronization. 159 */ 160 161 // list of visible layers on that display 162 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 163 164 // Whether we have a visible secure layer on this display 165 bool mSecureLayerVisible; 166 167 // Whether the screen is blanked; 168 mutable int mScreenAcquired; 169 170 171 /* 172 * Transaction state 173 */ 174 static status_t orientationToTransfrom(int orientation, int w, int h, 175 Transform* tr); 176 Transform mGlobalTransform; 177 int mOrientation; 178 uint32_t mLayerStack; 179}; 180 181}; // namespace android 182 183#endif // ANDROID_DISPLAY_DEVICE_H 184