DisplayDevice.h revision e57f292595bec48f65c8088b00ff6beea01217e9
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 DISPLAY_ID_COUNT 56 }; 57 58 enum { 59 PARTIAL_UPDATES = 0x00020000, // video driver feature 60 SWAP_RECTANGLE = 0x00080000, 61 }; 62 63 DisplayDevice( 64 const sp<SurfaceFlinger>& flinger, 65 int dpy, 66 const sp<ANativeWindow>& nativeWindow, 67 const sp<FramebufferSurface>& framebufferSurface, 68 EGLConfig config); 69 70 ~DisplayDevice(); 71 72 // whether this is a valid object. An invalid DisplayDevice is returned 73 // when an non existing id is requested 74 bool isValid() const; 75 76 // Flip the front and back buffers if the back buffer is "dirty". Might 77 // be instantaneous, might involve copying the frame buffer around. 78 void flip(const Region& dirty) const; 79 80 float getDpiX() const; 81 float getDpiY() const; 82 float getDensity() const; 83 int getWidth() const; 84 int getHeight() const; 85 PixelFormat getFormat() const; 86 uint32_t getFlags() const; 87 88 EGLSurface getEGLSurface() const; 89 90 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 91 Vector< sp<LayerBase> > getVisibleLayersSortedByZ() const; 92 bool getSecureLayerVisible() const; 93 94 status_t setOrientation(int orientation); 95 void setLayerStack(uint32_t stack); 96 97 int getOrientation() const { return mOrientation; } 98 const Transform& getTransform() const { return mGlobalTransform; } 99 uint32_t getLayerStack() const { return mLayerStack; } 100 int32_t getDisplayId() const { return mId; } 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 sp<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<ANativeWindow> 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