DisplayDevice.h revision 8b736f138cfd9b239a2c7073347a13c489534ae1
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 int getWidth() const; 81 int getHeight() const; 82 PixelFormat getFormat() const; 83 uint32_t getFlags() const; 84 85 EGLSurface getEGLSurface() const; 86 87 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 88 Vector< sp<LayerBase> > getVisibleLayersSortedByZ() const; 89 bool getSecureLayerVisible() const; 90 91 status_t setOrientation(int orientation); 92 void setLayerStack(uint32_t stack); 93 94 int getOrientation() const { return mOrientation; } 95 const Transform& getTransform() const { return mGlobalTransform; } 96 uint32_t getLayerStack() const { return mLayerStack; } 97 int32_t getDisplayId() const { return mId; } 98 99 status_t compositionComplete() const; 100 101 Rect getBounds() const { 102 return Rect(mDisplayWidth, mDisplayHeight); 103 } 104 inline Rect bounds() const { return getBounds(); } 105 106 static void makeCurrent(const sp<const DisplayDevice>& hw, EGLContext ctx); 107 108 /* ------------------------------------------------------------------------ 109 * blank / unplank management 110 */ 111 void releaseScreen() const; 112 void acquireScreen() const; 113 bool isScreenAcquired() const; 114 bool canDraw() const; 115 116 /* ------------------------------------------------------------------------ 117 * Debugging 118 */ 119 uint32_t getPageFlipCount() const; 120 void dump(String8& res) const; 121 122 inline bool operator < (const DisplayDevice& rhs) const { 123 return mId < rhs.mId; 124 } 125 126private: 127 void init(EGLConfig config); 128 129 /* 130 * Constants, set during initialization 131 */ 132 sp<SurfaceFlinger> mFlinger; 133 int32_t mId; 134 135 // ANativeWindow this display is rendering into 136 sp<ANativeWindow> mNativeWindow; 137 138 // set if mNativeWindow is a FramebufferSurface 139 sp<FramebufferSurface> mFramebufferSurface; 140 141 EGLDisplay mDisplay; 142 EGLSurface mSurface; 143 EGLContext mContext; 144 int mDisplayWidth; 145 int mDisplayHeight; 146 PixelFormat mFormat; 147 uint32_t mFlags; 148 mutable uint32_t mPageFlipCount; 149 150 /* 151 * Can only accessed from the main thread, these members 152 * don't need synchronization. 153 */ 154 155 // list of visible layers on that display 156 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 157 158 // Whether we have a visible secure layer on this display 159 bool mSecureLayerVisible; 160 161 // Whether the screen is blanked; 162 mutable int mScreenAcquired; 163 164 165 /* 166 * Transaction state 167 */ 168 static status_t orientationToTransfrom(int orientation, int w, int h, 169 Transform* tr); 170 Transform mGlobalTransform; 171 int mOrientation; 172 uint32_t mLayerStack; 173}; 174 175}; // namespace android 176 177#endif // ANDROID_DISPLAY_DEVICE_H 178