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