DisplayDevice.h revision 1a4d883dcc1725892bfb5c28dec255a233186524
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 33struct ANativeWindow; 34 35namespace android { 36 37class DisplayInfo; 38class FramebufferSurface; 39class LayerBase; 40class SurfaceFlinger; 41 42class DisplayDevice : public LightRefBase<DisplayDevice> 43{ 44public: 45 // region in layer-stack space 46 mutable Region dirtyRegion; 47 // region in screen space 48 mutable Region swapRegion; 49 // region in screen space 50 Region undefinedRegion; 51 52 enum { 53 DISPLAY_ID_MAIN = 0, 54 DISPLAY_ID_HDMI = 1 55 }; 56 57 enum { 58 PARTIAL_UPDATES = 0x00020000, // video driver feature 59 SWAP_RECTANGLE = 0x00080000, 60 }; 61 62 DisplayDevice( 63 const sp<SurfaceFlinger>& flinger, 64 int dpy, 65 const sp<ANativeWindow>& nativeWindow, 66 const sp<FramebufferSurface>& framebufferSurface, 67 EGLConfig config); 68 69 ~DisplayDevice(); 70 71 // whether this is a valid object. An invalid DisplayDevice is returned 72 // when an non existing id is requested 73 bool isValid() const; 74 75 // Flip the front and back buffers if the back buffer is "dirty". Might 76 // be instantaneous, might involve copying the frame buffer around. 77 void flip(const Region& dirty) const; 78 79 float getDpiX() const; 80 float getDpiY() const; 81 float getDensity() const; 82 int getWidth() const; 83 int getHeight() const; 84 PixelFormat getFormat() const; 85 uint32_t getFlags() const; 86 87 EGLSurface getEGLSurface() const; 88 89 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 90 Vector< sp<LayerBase> > getVisibleLayersSortedByZ() const; 91 bool getSecureLayerVisible() const; 92 93 status_t setOrientation(int orientation); 94 int getOrientation() const { return mOrientation; } 95 const Transform& getTransform() const { return mGlobalTransform; } 96 uint32_t getLayerStack() const { return mLayerStack; } 97 98 status_t compositionComplete() const; 99 100 Rect getBounds() const { 101 return Rect(mDisplayWidth, mDisplayHeight); 102 } 103 inline Rect bounds() const { return getBounds(); } 104 105 static void makeCurrent(const sp<const DisplayDevice>& hw, EGLContext ctx); 106 107 /* ------------------------------------------------------------------------ 108 * blank / unplank management 109 */ 110 void releaseScreen() const; 111 void acquireScreen() const; 112 bool isScreenAcquired() const; 113 bool canDraw() const; 114 115 /* ------------------------------------------------------------------------ 116 * Debugging 117 */ 118 uint32_t getPageFlipCount() const; 119 void dump(String8& res) const; 120 121 inline bool operator < (const DisplayDevice& rhs) const { 122 return mId < rhs.mId; 123 } 124 125private: 126 void init(EGLConfig config); 127 128 /* 129 * Constants, set during initialization 130 */ 131 sp<SurfaceFlinger> mFlinger; 132 int32_t mId; 133 134 // ANativeWindow this display is rendering into 135 sp<ANativeWindow> mNativeWindow; 136 137 // set if mNativeWindow is a FramebufferSurface 138 sp<FramebufferSurface> mFramebufferSurface; 139 140 EGLDisplay mDisplay; 141 EGLSurface mSurface; 142 EGLContext mContext; 143 float mDpiX; 144 float mDpiY; 145 float mDensity; 146 int mDisplayWidth; 147 int mDisplayHeight; 148 PixelFormat mFormat; 149 uint32_t mFlags; 150 mutable uint32_t mPageFlipCount; 151 152 /* 153 * Can only accessed from the main thread, these members 154 * don't need synchronization. 155 */ 156 157 // list of visible layers on that display 158 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 159 160 // Whether we have a visible secure layer on this display 161 bool mSecureLayerVisible; 162 163 // Whether the screen is blanked; 164 mutable int mScreenAcquired; 165 166 167 /* 168 * Transaction state 169 */ 170 static status_t orientationToTransfrom(int orientation, int w, int h, 171 Transform* tr); 172 Transform mGlobalTransform; 173 int mOrientation; 174 uint32_t mLayerStack; 175}; 176 177}; // namespace android 178 179#endif // ANDROID_DISPLAY_DEVICE_H 180