DisplayDevice.h revision 00e8c7a88a5b9c4104a71013a713acd3e4d3b77b
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 <hardware/hwcomposer_defs.h> 32 33#include "Transform.h" 34 35struct ANativeWindow; 36 37namespace android { 38 39class DisplayInfo; 40class FramebufferSurface; 41class LayerBase; 42class SurfaceFlinger; 43 44class DisplayDevice : public LightRefBase<DisplayDevice> 45{ 46public: 47 // region in layer-stack space 48 mutable Region dirtyRegion; 49 // region in screen space 50 mutable Region swapRegion; 51 // region in screen space 52 Region undefinedRegion; 53 54 enum DisplayType { 55 DISPLAY_ID_INVALID = -1, 56 DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY, 57 DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL, 58 NUM_DISPLAY_TYPES = HWC_NUM_DISPLAY_TYPES, 59 DISPLAY_VIRTUAL = HWC_NUM_DISPLAY_TYPES 60 }; 61 62 enum { 63 PARTIAL_UPDATES = 0x00020000, // video driver feature 64 SWAP_RECTANGLE = 0x00080000, 65 }; 66 67 DisplayDevice( 68 const sp<SurfaceFlinger>& flinger, 69 DisplayType type, const wp<IBinder>& displayToken, 70 const sp<ANativeWindow>& nativeWindow, 71 const sp<FramebufferSurface>& framebufferSurface, 72 EGLConfig config); 73 74 ~DisplayDevice(); 75 76 // whether this is a valid object. An invalid DisplayDevice is returned 77 // when an non existing id is requested 78 bool isValid() const; 79 80 // Flip the front and back buffers if the back buffer is "dirty". Might 81 // be instantaneous, might involve copying the frame buffer around. 82 void flip(const Region& dirty) const; 83 84 int getWidth() const; 85 int getHeight() const; 86 PixelFormat getFormat() const; 87 uint32_t getFlags() const; 88 89 EGLSurface getEGLSurface() const; 90 91 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 92 const Vector< sp<LayerBase> >& getVisibleLayersSortedByZ() const; 93 bool getSecureLayerVisible() const; 94 Region getDirtyRegion(bool repaintEverything) const; 95 96 void setLayerStack(uint32_t stack); 97 void setProjection(int orientation, const Rect& viewport, const Rect& frame); 98 99 int getOrientation() const { return mOrientation; } 100 const Transform& getTransform() const { return mGlobalTransform; } 101 const Rect& getViewport() const { return mViewport; } 102 const Rect& getFrame() const { return mFrame; } 103 104 uint32_t getLayerStack() const { return mLayerStack; } 105 int32_t getDisplayType() const { return mType; } 106 int32_t getHwcDisplayId() const { return mHwcDisplayId; } 107 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; } 108 109 status_t compositionComplete() const; 110 111 Rect getBounds() const { 112 return Rect(mDisplayWidth, mDisplayHeight); 113 } 114 inline Rect bounds() const { return getBounds(); } 115 116 static EGLBoolean makeCurrent(EGLDisplay dpy, 117 const sp<const DisplayDevice>& hw, EGLContext ctx); 118 119 /* ------------------------------------------------------------------------ 120 * blank / unplank management 121 */ 122 void releaseScreen() const; 123 void acquireScreen() const; 124 bool isScreenAcquired() const; 125 bool canDraw() const; 126 127 /* ------------------------------------------------------------------------ 128 * Debugging 129 */ 130 uint32_t getPageFlipCount() const; 131 void dump(String8& res) const; 132 133private: 134 void init(EGLConfig config); 135 136 /* 137 * Constants, set during initialization 138 */ 139 sp<SurfaceFlinger> mFlinger; 140 DisplayType mType; 141 int32_t mHwcDisplayId; 142 wp<IBinder> mDisplayToken; 143 144 // ANativeWindow this display is rendering into 145 sp<ANativeWindow> mNativeWindow; 146 147 // set if mNativeWindow is a FramebufferSurface 148 sp<FramebufferSurface> mFramebufferSurface; 149 150 EGLDisplay mDisplay; 151 EGLSurface mSurface; 152 EGLContext mContext; 153 int mDisplayWidth; 154 int mDisplayHeight; 155 PixelFormat mFormat; 156 uint32_t mFlags; 157 mutable uint32_t mPageFlipCount; 158 159 /* 160 * Can only accessed from the main thread, these members 161 * don't need synchronization. 162 */ 163 164 // list of visible layers on that display 165 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 166 167 // Whether we have a visible secure layer on this display 168 bool mSecureLayerVisible; 169 170 // Whether the screen is blanked; 171 mutable int mScreenAcquired; 172 173 174 /* 175 * Transaction state 176 */ 177 static status_t orientationToTransfrom(int orientation, 178 int w, int h, Transform* tr); 179 180 void updateGeometryTransform(); 181 182 uint32_t mLayerStack; 183 int mOrientation; 184 Rect mViewport; 185 Rect mFrame; 186 Transform mGlobalTransform; 187}; 188 189}; // namespace android 190 191#endif // ANDROID_DISPLAY_DEVICE_H 192