DisplayDevice.h revision 8dfa92fef9759a881e96ee58d59875d35023aab9
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; 43class HWComposer; 44 45class DisplayDevice : public LightRefBase<DisplayDevice> 46{ 47public: 48 // region in layer-stack space 49 mutable Region dirtyRegion; 50 // region in screen space 51 mutable Region swapRegion; 52 // region in screen space 53 Region undefinedRegion; 54 55 enum DisplayType { 56 DISPLAY_ID_INVALID = -1, 57 DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY, 58 DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL, 59 NUM_DISPLAY_TYPES = HWC_NUM_DISPLAY_TYPES, 60 DISPLAY_VIRTUAL = HWC_NUM_DISPLAY_TYPES 61 }; 62 63 enum { 64 PARTIAL_UPDATES = 0x00020000, // video driver feature 65 SWAP_RECTANGLE = 0x00080000, 66 }; 67 68 DisplayDevice( 69 const sp<SurfaceFlinger>& flinger, 70 DisplayType type, const wp<IBinder>& displayToken, 71 const sp<ANativeWindow>& nativeWindow, 72 const sp<FramebufferSurface>& framebufferSurface, 73 EGLConfig config); 74 75 ~DisplayDevice(); 76 77 // whether this is a valid object. An invalid DisplayDevice is returned 78 // when an non existing id is requested 79 bool isValid() const; 80 81 // Flip the front and back buffers if the back buffer is "dirty". Might 82 // be instantaneous, might involve copying the frame buffer around. 83 void flip(const Region& dirty) const; 84 85 int getWidth() const; 86 int getHeight() const; 87 PixelFormat getFormat() const; 88 uint32_t getFlags() const; 89 90 EGLSurface getEGLSurface() const; 91 92 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers); 93 const Vector< sp<LayerBase> >& getVisibleLayersSortedByZ() const; 94 bool getSecureLayerVisible() const; 95 Region getDirtyRegion(bool repaintEverything) const; 96 97 void setLayerStack(uint32_t stack); 98 void setProjection(int orientation, const Rect& viewport, const Rect& frame); 99 100 int getOrientation() const { return mOrientation; } 101 const Transform& getTransform() const { return mGlobalTransform; } 102 const Rect& getViewport() const { return mViewport; } 103 const Rect& getFrame() const { return mFrame; } 104 105 uint32_t getLayerStack() const { return mLayerStack; } 106 int32_t getDisplayType() const { return mType; } 107 int32_t getHwcDisplayId() const { return mHwcDisplayId; } 108 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; } 109 110 void swapBuffers(HWComposer& hwc) const; 111 status_t compositionComplete() const; 112 113 // called after h/w composer has completed its set() call 114 void onSwapBuffersCompleted(HWComposer& hwc) const; 115 116 Rect getBounds() const { 117 return Rect(mDisplayWidth, mDisplayHeight); 118 } 119 inline Rect bounds() const { return getBounds(); } 120 121 void setDisplayName(const String8& displayName) { 122 mDisplayName = displayName; 123 } 124 const String8& getDisplayName() const { return mDisplayName; } 125 126 static EGLBoolean makeCurrent(EGLDisplay dpy, 127 const sp<const DisplayDevice>& hw, EGLContext ctx); 128 129 /* ------------------------------------------------------------------------ 130 * blank / unblank management 131 */ 132 void releaseScreen() const; 133 void acquireScreen() const; 134 bool isScreenAcquired() const; 135 bool canDraw() const; 136 137 /* ------------------------------------------------------------------------ 138 * Debugging 139 */ 140 uint32_t getPageFlipCount() const; 141 void dump(String8& res) const; 142 143private: 144 void init(EGLConfig config); 145 146 /* 147 * Constants, set during initialization 148 */ 149 sp<SurfaceFlinger> mFlinger; 150 DisplayType mType; 151 int32_t mHwcDisplayId; 152 wp<IBinder> mDisplayToken; 153 154 // ANativeWindow this display is rendering into 155 sp<ANativeWindow> mNativeWindow; 156 157 // set if mNativeWindow is a FramebufferSurface 158 sp<FramebufferSurface> mFramebufferSurface; 159 160 EGLDisplay mDisplay; 161 EGLSurface mSurface; 162 EGLContext mContext; 163 int mDisplayWidth; 164 int mDisplayHeight; 165 PixelFormat mFormat; 166 uint32_t mFlags; 167 mutable uint32_t mPageFlipCount; 168 String8 mDisplayName; 169 170 /* 171 * Can only accessed from the main thread, these members 172 * don't need synchronization. 173 */ 174 175 // list of visible layers on that display 176 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 177 178 // Whether we have a visible secure layer on this display 179 bool mSecureLayerVisible; 180 181 // Whether the screen is blanked; 182 mutable int mScreenAcquired; 183 184 185 /* 186 * Transaction state 187 */ 188 static status_t orientationToTransfrom(int orientation, 189 int w, int h, Transform* tr); 190 191 void updateGeometryTransform(); 192 193 uint32_t mLayerStack; 194 int mOrientation; 195 Rect mViewport; 196 Rect mFrame; 197 Transform mGlobalTransform; 198}; 199 200}; // namespace android 201 202#endif // ANDROID_DISPLAY_DEVICE_H 203