1 /* 2 * Copyright (C) 2006 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_GUI_ISURFACE_COMPOSER_H 18 #define ANDROID_GUI_ISURFACE_COMPOSER_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <utils/RefBase.h> 24 #include <utils/Errors.h> 25 26 #include <binder/IInterface.h> 27 28 #include <ui/PixelFormat.h> 29 30 #include <gui/IGraphicBufferAlloc.h> 31 #include <gui/ISurfaceComposerClient.h> 32 33 namespace android { 34 // ---------------------------------------------------------------------------- 35 36 class ComposerState; 37 class DisplayState; 38 class DisplayInfo; 39 class IDisplayEventConnection; 40 class IMemoryHeap; 41 42 /* 43 * This class defines the Binder IPC interface for accessing various 44 * SurfaceFlinger features. 45 */ 46 class ISurfaceComposer: public IInterface { 47 public: 48 DECLARE_META_INTERFACE(SurfaceComposer); 49 50 // flags for setTransactionState() 51 enum { 52 eSynchronous = 0x01, 53 eAnimation = 0x02, 54 }; 55 56 enum { 57 eDisplayIdMain = 0, 58 eDisplayIdHdmi = 1 59 }; 60 61 /* create connection with surface flinger, requires 62 * ACCESS_SURFACE_FLINGER permission 63 */ 64 virtual sp<ISurfaceComposerClient> createConnection() = 0; 65 66 /* create a graphic buffer allocator 67 */ 68 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc() = 0; 69 70 /* return an IDisplayEventConnection */ 71 virtual sp<IDisplayEventConnection> createDisplayEventConnection() = 0; 72 73 /* create a display 74 * requires ACCESS_SURFACE_FLINGER permission. 75 */ 76 virtual sp<IBinder> createDisplay(const String8& displayName, 77 bool secure) = 0; 78 79 /* get the token for the existing default displays. possible values 80 * for id are eDisplayIdMain and eDisplayIdHdmi. 81 */ 82 virtual sp<IBinder> getBuiltInDisplay(int32_t id) = 0; 83 84 /* open/close transactions. requires ACCESS_SURFACE_FLINGER permission */ 85 virtual void setTransactionState(const Vector<ComposerState>& state, 86 const Vector<DisplayState>& displays, uint32_t flags) = 0; 87 88 /* signal that we're done booting. 89 * Requires ACCESS_SURFACE_FLINGER permission 90 */ 91 virtual void bootFinished() = 0; 92 93 /* verify that an IGraphicBufferProducer was created by SurfaceFlinger. 94 */ 95 virtual bool authenticateSurfaceTexture( 96 const sp<IGraphicBufferProducer>& surface) const = 0; 97 98 /* triggers screen off and waits for it to complete 99 * requires ACCESS_SURFACE_FLINGER permission. 100 */ 101 virtual void blank(const sp<IBinder>& display) = 0; 102 103 /* triggers screen on and waits for it to complete 104 * requires ACCESS_SURFACE_FLINGER permission. 105 */ 106 virtual void unblank(const sp<IBinder>& display) = 0; 107 108 /* returns information about a display 109 * intended to be used to get information about built-in displays */ 110 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) = 0; 111 112 /* Capture the specified screen. requires READ_FRAME_BUFFER permission 113 * This function will fail if there is a secure window on screen. 114 */ 115 virtual status_t captureScreen(const sp<IBinder>& display, 116 const sp<IGraphicBufferProducer>& producer, 117 uint32_t reqWidth, uint32_t reqHeight, 118 uint32_t minLayerZ, uint32_t maxLayerZ, 119 bool isCpuConsumer) = 0; 120 }; 121 122 // ---------------------------------------------------------------------------- 123 124 class BnSurfaceComposer: public BnInterface<ISurfaceComposer> { 125 public: 126 enum { 127 // Note: BOOT_FINISHED must remain this value, it is called from 128 // Java by ActivityManagerService. 129 BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION, 130 CREATE_CONNECTION, 131 CREATE_GRAPHIC_BUFFER_ALLOC, 132 CREATE_DISPLAY_EVENT_CONNECTION, 133 CREATE_DISPLAY, 134 GET_BUILT_IN_DISPLAY, 135 SET_TRANSACTION_STATE, 136 AUTHENTICATE_SURFACE, 137 BLANK, 138 UNBLANK, 139 GET_DISPLAY_INFO, 140 CONNECT_DISPLAY, 141 CAPTURE_SCREEN, 142 }; 143 144 virtual status_t onTransact(uint32_t code, const Parcel& data, 145 Parcel* reply, uint32_t flags = 0); 146 }; 147 148 // ---------------------------------------------------------------------------- 149 150 }; // namespace android 151 152 #endif // ANDROID_GUI_ISURFACE_COMPOSER_H 153