DisplayDevice.h revision d2cf8c2f07b4285a224acd262e6f052c37dbc0b0
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/String8.h> 30#include <utils/Timers.h> 31 32#include <hardware/hwcomposer_defs.h> 33 34#include "Transform.h" 35 36struct ANativeWindow; 37 38namespace android { 39 40class DisplayInfo; 41class DisplaySurface; 42class IGraphicBufferProducer; 43class Layer; 44class SurfaceFlinger; 45class HWComposer; 46 47class DisplayDevice : public LightRefBase<DisplayDevice> 48{ 49public: 50 // region in layer-stack space 51 mutable Region dirtyRegion; 52 // region in screen space 53 mutable Region swapRegion; 54 // region in screen space 55 Region undefinedRegion; 56 57 enum DisplayType { 58 DISPLAY_ID_INVALID = -1, 59 DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY, 60 DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL, 61 DISPLAY_VIRTUAL = HWC_DISPLAY_VIRTUAL, 62 NUM_BUILTIN_DISPLAY_TYPES = HWC_NUM_PHYSICAL_DISPLAY_TYPES, 63 }; 64 65 enum { 66 PARTIAL_UPDATES = 0x00020000, // video driver feature 67 SWAP_RECTANGLE = 0x00080000, 68 }; 69 70 enum { 71 NO_LAYER_STACK = 0xFFFFFFFF, 72 }; 73 74 DisplayDevice( 75 const sp<SurfaceFlinger>& flinger, 76 DisplayType type, 77 int32_t hwcId, // negative for non-HWC-composited displays 78 bool isSecure, 79 const wp<IBinder>& displayToken, 80 const sp<DisplaySurface>& displaySurface, 81 const sp<IGraphicBufferProducer>& producer, 82 EGLConfig config); 83 84 ~DisplayDevice(); 85 86 // whether this is a valid object. An invalid DisplayDevice is returned 87 // when an non existing id is requested 88 bool isValid() const; 89 90 // isSecure indicates whether this display can be trusted to display 91 // secure surfaces. 92 bool isSecure() const { return mIsSecure; } 93 94 // Flip the front and back buffers if the back buffer is "dirty". Might 95 // be instantaneous, might involve copying the frame buffer around. 96 void flip(const Region& dirty) const; 97 98 int getWidth() const; 99 int getHeight() const; 100 PixelFormat getFormat() const; 101 uint32_t getFlags() const; 102 103 EGLSurface getEGLSurface() const; 104 105 void setVisibleLayersSortedByZ(const Vector< sp<Layer> >& layers); 106 const Vector< sp<Layer> >& getVisibleLayersSortedByZ() const; 107 bool getSecureLayerVisible() const; 108 Region getDirtyRegion(bool repaintEverything) const; 109 110 void setLayerStack(uint32_t stack); 111 void setProjection(int orientation, const Rect& viewport, const Rect& frame); 112 113 int getOrientation() const { return mOrientation; } 114 const Transform& getTransform() const { return mGlobalTransform; } 115 const Rect getViewport() const { return mViewport; } 116 const Rect getFrame() const { return mFrame; } 117 const Rect& getScissor() const { return mScissor; } 118 bool needsFiltering() const { return mNeedsFiltering; } 119 120 uint32_t getLayerStack() const { return mLayerStack; } 121 int32_t getDisplayType() const { return mType; } 122 int32_t getHwcDisplayId() const { return mHwcDisplayId; } 123 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; } 124 125 status_t beginFrame() const; 126 status_t prepareFrame(const HWComposer& hwc) const; 127 128 void swapBuffers(HWComposer& hwc) const; 129 status_t compositionComplete() const; 130 131 // called after h/w composer has completed its set() call 132 void onSwapBuffersCompleted(HWComposer& hwc) const; 133 134 Rect getBounds() const { 135 return Rect(mDisplayWidth, mDisplayHeight); 136 } 137 inline Rect bounds() const { return getBounds(); } 138 139 void setDisplayName(const String8& displayName); 140 const String8& getDisplayName() const { return mDisplayName; } 141 142 EGLBoolean makeCurrent(EGLDisplay dpy, EGLContext ctx) const; 143 void setViewportAndProjection() const; 144 145 /* ------------------------------------------------------------------------ 146 * blank / unblank management 147 */ 148 void releaseScreen() const; 149 void acquireScreen() const; 150 bool isScreenAcquired() const; 151 bool canDraw() const; 152 153 // release HWC resources (if any) for removable displays 154 void disconnect(HWComposer& hwc); 155 156 /* ------------------------------------------------------------------------ 157 * Debugging 158 */ 159 uint32_t getPageFlipCount() const; 160 void dump(String8& result) const; 161 162private: 163 /* 164 * Constants, set during initialization 165 */ 166 sp<SurfaceFlinger> mFlinger; 167 DisplayType mType; 168 int32_t mHwcDisplayId; 169 wp<IBinder> mDisplayToken; 170 171 // ANativeWindow this display is rendering into 172 sp<ANativeWindow> mNativeWindow; 173 sp<DisplaySurface> mDisplaySurface; 174 175 EGLDisplay mDisplay; 176 EGLSurface mSurface; 177 int mDisplayWidth; 178 int mDisplayHeight; 179 PixelFormat mFormat; 180 uint32_t mFlags; 181 mutable uint32_t mPageFlipCount; 182 String8 mDisplayName; 183 bool mIsSecure; 184 185 /* 186 * Can only accessed from the main thread, these members 187 * don't need synchronization. 188 */ 189 190 // list of visible layers on that display 191 Vector< sp<Layer> > mVisibleLayersSortedByZ; 192 193 // Whether we have a visible secure layer on this display 194 bool mSecureLayerVisible; 195 196 // Whether the screen is blanked; 197 mutable int mScreenAcquired; 198 199 200 /* 201 * Transaction state 202 */ 203 static status_t orientationToTransfrom(int orientation, 204 int w, int h, Transform* tr); 205 206 uint32_t mLayerStack; 207 int mOrientation; 208 // user-provided visible area of the layer stack 209 Rect mViewport; 210 // user-provided rectangle where mViewport gets mapped to 211 Rect mFrame; 212 // pre-computed scissor to apply to the display 213 Rect mScissor; 214 Transform mGlobalTransform; 215 bool mNeedsFiltering; 216}; 217 218}; // namespace android 219 220#endif // ANDROID_DISPLAY_DEVICE_H 221