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 36 struct ANativeWindow; 37 38 namespace android { 39 40 struct DisplayInfo; 41 class DisplaySurface; 42 class IGraphicBufferProducer; 43 class Layer; 44 class SurfaceFlinger; 45 class HWComposer; 46 47 class DisplayDevice : public LightRefBase<DisplayDevice> 48 { 49 public: 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 bool lastCompositionHadVisibleLayers; 57 58 enum DisplayType { 59 DISPLAY_ID_INVALID = -1, 60 DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY, 61 DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL, 62 DISPLAY_VIRTUAL = HWC_DISPLAY_VIRTUAL, 63 NUM_BUILTIN_DISPLAY_TYPES = HWC_NUM_PHYSICAL_DISPLAY_TYPES, 64 }; 65 66 enum { 67 PARTIAL_UPDATES = 0x00020000, // video driver feature 68 SWAP_RECTANGLE = 0x00080000, 69 }; 70 71 enum { 72 NO_LAYER_STACK = 0xFFFFFFFF, 73 }; 74 75 DisplayDevice( 76 const sp<SurfaceFlinger>& flinger, 77 DisplayType type, 78 int32_t hwcId, // negative for non-HWC-composited displays 79 int format, 80 bool isSecure, 81 const wp<IBinder>& displayToken, 82 const sp<DisplaySurface>& displaySurface, 83 const sp<IGraphicBufferProducer>& producer, 84 EGLConfig config); 85 86 ~DisplayDevice(); 87 88 // whether this is a valid object. An invalid DisplayDevice is returned 89 // when an non existing id is requested 90 bool isValid() const; 91 92 // isSecure indicates whether this display can be trusted to display 93 // secure surfaces. 94 bool isSecure() const { return mIsSecure; } 95 96 // Flip the front and back buffers if the back buffer is "dirty". Might 97 // be instantaneous, might involve copying the frame buffer around. 98 void flip(const Region& dirty) const; 99 100 int getWidth() const; 101 int getHeight() const; 102 PixelFormat getFormat() const; 103 uint32_t getFlags() const; 104 105 EGLSurface getEGLSurface() const; 106 107 void setVisibleLayersSortedByZ(const Vector< sp<Layer> >& layers); 108 const Vector< sp<Layer> >& getVisibleLayersSortedByZ() const; 109 bool getSecureLayerVisible() const; 110 Region getDirtyRegion(bool repaintEverything) const; 111 112 void setLayerStack(uint32_t stack); 113 void setDisplaySize(const int newWidth, const int newHeight); 114 void setProjection(int orientation, const Rect& viewport, const Rect& frame); 115 116 int getOrientation() const { return mOrientation; } 117 uint32_t getOrientationTransform() const; 118 const Transform& getTransform() const { return mGlobalTransform; } 119 const Rect getViewport() const { return mViewport; } 120 const Rect getFrame() const { return mFrame; } 121 const Rect& getScissor() const { return mScissor; } 122 bool needsFiltering() const { return mNeedsFiltering; } 123 124 uint32_t getLayerStack() const { return mLayerStack; } 125 int32_t getDisplayType() const { return mType; } 126 int32_t getHwcDisplayId() const { return mHwcDisplayId; } 127 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; } 128 129 // We pass in mustRecompose so we can keep VirtualDisplaySurface's state 130 // machine happy without actually queueing a buffer if nothing has changed 131 status_t beginFrame(bool mustRecompose) const; 132 status_t prepareFrame(const HWComposer& hwc) const; 133 134 void swapBuffers(HWComposer& hwc) const; 135 status_t compositionComplete() const; 136 137 // called after h/w composer has completed its set() call 138 void onSwapBuffersCompleted(HWComposer& hwc) const; 139 140 Rect getBounds() const { 141 return Rect(mDisplayWidth, mDisplayHeight); 142 } 143 inline Rect bounds() const { return getBounds(); } 144 145 void setDisplayName(const String8& displayName); 146 const String8& getDisplayName() const { return mDisplayName; } 147 148 EGLBoolean makeCurrent(EGLDisplay dpy, EGLContext ctx) const; 149 void setViewportAndProjection() const; 150 151 /* ------------------------------------------------------------------------ 152 * Display power mode management. 153 */ 154 int getPowerMode() const; 155 void setPowerMode(int mode); 156 bool isDisplayOn() const; 157 158 /* ------------------------------------------------------------------------ 159 * Display active config management. 160 */ 161 int getActiveConfig() const; 162 void setActiveConfig(int mode); 163 164 // release HWC resources (if any) for removable displays 165 void disconnect(HWComposer& hwc); 166 167 /* ------------------------------------------------------------------------ 168 * Debugging 169 */ 170 uint32_t getPageFlipCount() const; 171 void dump(String8& result) const; 172 173 private: 174 /* 175 * Constants, set during initialization 176 */ 177 sp<SurfaceFlinger> mFlinger; 178 DisplayType mType; 179 int32_t mHwcDisplayId; 180 wp<IBinder> mDisplayToken; 181 182 // ANativeWindow this display is rendering into 183 sp<ANativeWindow> mNativeWindow; 184 sp<DisplaySurface> mDisplaySurface; 185 186 EGLConfig mConfig; 187 EGLDisplay mDisplay; 188 EGLSurface mSurface; 189 int mDisplayWidth; 190 int mDisplayHeight; 191 PixelFormat mFormat; 192 uint32_t mFlags; 193 mutable uint32_t mPageFlipCount; 194 String8 mDisplayName; 195 bool mIsSecure; 196 197 /* 198 * Can only accessed from the main thread, these members 199 * don't need synchronization. 200 */ 201 202 // list of visible layers on that display 203 Vector< sp<Layer> > mVisibleLayersSortedByZ; 204 205 // Whether we have a visible secure layer on this display 206 bool mSecureLayerVisible; 207 208 209 /* 210 * Transaction state 211 */ 212 static status_t orientationToTransfrom(int orientation, 213 int w, int h, Transform* tr); 214 215 uint32_t mLayerStack; 216 int mOrientation; 217 // user-provided visible area of the layer stack 218 Rect mViewport; 219 // user-provided rectangle where mViewport gets mapped to 220 Rect mFrame; 221 // pre-computed scissor to apply to the display 222 Rect mScissor; 223 Transform mGlobalTransform; 224 bool mNeedsFiltering; 225 // Current power mode 226 int mPowerMode; 227 // Current active config 228 int mActiveConfig; 229 }; 230 231 }; // namespace android 232 233 #endif // ANDROID_DISPLAY_DEVICE_H 234
