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_HARDWARE_H 18 #define ANDROID_DISPLAY_HARDWARE_H 19 20 #include <stdlib.h> 21 22 #include <ui/PixelFormat.h> 23 #include <ui/Region.h> 24 25 #include <GLES/gl.h> 26 #include <GLES/glext.h> 27 #include <EGL/egl.h> 28 #include <EGL/eglext.h> 29 30 #include "GLExtensions.h" 31 32 #include "DisplayHardware/DisplayHardwareBase.h" 33 #include "HWComposer.h" 34 #include "PowerHAL.h" 35 36 namespace android { 37 38 class FramebufferNativeWindow; 39 40 class DisplayHardware : 41 public DisplayHardwareBase, 42 public HWComposer::EventHandler 43 { 44 public: 45 46 class VSyncHandler : virtual public RefBase { 47 friend class DisplayHardware; 48 virtual void onVSyncReceived(int dpy, nsecs_t timestamp) = 0; 49 protected: ~VSyncHandler()50 virtual ~VSyncHandler() {} 51 }; 52 53 enum { 54 COPY_BITS_EXTENSION = 0x00000008, 55 PARTIAL_UPDATES = 0x00020000, // video driver feature 56 SLOW_CONFIG = 0x00040000, // software 57 SWAP_RECTANGLE = 0x00080000, 58 }; 59 60 DisplayHardware( 61 const sp<SurfaceFlinger>& flinger, 62 uint32_t displayIndex); 63 64 virtual ~DisplayHardware(); 65 66 void releaseScreen() const; 67 void acquireScreen() const; 68 69 // Flip the front and back buffers if the back buffer is "dirty". Might 70 // be instantaneous, might involve copying the frame buffer around. 71 void flip(const Region& dirty) const; 72 73 float getDpiX() const; 74 float getDpiY() const; 75 float getRefreshRate() const; 76 float getDensity() const; 77 int getWidth() const; 78 int getHeight() const; 79 PixelFormat getFormat() const; 80 uint32_t getFlags() const; 81 uint32_t getMaxTextureSize() const; 82 uint32_t getMaxViewportDims() const; 83 nsecs_t getRefreshPeriod() const; 84 nsecs_t getRefreshTimestamp() const; 85 void makeCurrent() const; 86 87 88 void setVSyncHandler(const sp<VSyncHandler>& handler); 89 90 enum { 91 EVENT_VSYNC = HWC_EVENT_VSYNC 92 }; 93 94 void eventControl(int event, int enabled); 95 96 97 uint32_t getPageFlipCount() const; getEGLDisplay()98 EGLDisplay getEGLDisplay() const { return mDisplay; } 99 100 void dump(String8& res) const; 101 102 // Hardware Composer 103 HWComposer& getHwComposer() const; 104 105 status_t compositionComplete() const; 106 getBounds()107 Rect getBounds() const { 108 return Rect(mWidth, mHeight); 109 } bounds()110 inline Rect bounds() const { return getBounds(); } 111 112 private: 113 virtual void onVSyncReceived(int dpy, nsecs_t timestamp); 114 void init(uint32_t displayIndex) __attribute__((noinline)); 115 void fini() __attribute__((noinline)); 116 117 sp<SurfaceFlinger> mFlinger; 118 EGLDisplay mDisplay; 119 EGLSurface mSurface; 120 EGLContext mContext; 121 EGLConfig mConfig; 122 float mDpiX; 123 float mDpiY; 124 float mRefreshRate; 125 float mDensity; 126 int mWidth; 127 int mHeight; 128 PixelFormat mFormat; 129 uint32_t mFlags; 130 mutable uint32_t mPageFlipCount; 131 GLint mMaxViewportDims[2]; 132 GLint mMaxTextureSize; 133 134 nsecs_t mRefreshPeriod; 135 mutable nsecs_t mLastHwVSync; 136 137 // constant once set 138 HWComposer* mHwc; 139 PowerHAL mPowerHAL; 140 141 142 mutable Mutex mLock; 143 144 // protected by mLock 145 wp<VSyncHandler> mVSyncHandler; 146 147 sp<FramebufferNativeWindow> mNativeWindow; 148 }; 149 150 }; // namespace android 151 152 #endif // ANDROID_DISPLAY_HARDWARE_H 153