ISurfaceComposer.h revision 2d5e230292c27d59f4c096bc742a0a19abf811c1
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 33namespace android { 34// ---------------------------------------------------------------------------- 35 36class ComposerState; 37class DisplayState; 38class DisplayInfo; 39class IDisplayEventConnection; 40class IMemoryHeap; 41 42class ISurfaceComposer: public IInterface { 43public: 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) = 0; 73 74 /* get the token for the existing default displays. possible values 75 * for id are eDisplayIdMain and eDisplayIdHdmi. 76 */ 77 virtual sp<IBinder> getBuiltInDisplay(int32_t id) = 0; 78 79 /* open/close transactions. requires ACCESS_SURFACE_FLINGER permission */ 80 virtual void setTransactionState(const Vector<ComposerState>& state, 81 const Vector<DisplayState>& displays, uint32_t flags) = 0; 82 83 /* signal that we're done booting. 84 * Requires ACCESS_SURFACE_FLINGER permission 85 */ 86 virtual void bootFinished() = 0; 87 88 /* verify that an ISurfaceTexture was created by SurfaceFlinger. 89 */ 90 virtual bool authenticateSurfaceTexture( 91 const sp<ISurfaceTexture>& surface) const = 0; 92 93 /* Capture the specified screen. requires READ_FRAME_BUFFER permission 94 * This function will fail if there is a secure window on screen. 95 */ 96 virtual status_t captureScreen(const sp<IBinder>& display, sp<IMemoryHeap>* heap, 97 uint32_t* width, uint32_t* height, PixelFormat* format, 98 uint32_t reqWidth, uint32_t reqHeight, 99 uint32_t minLayerZ, uint32_t maxLayerZ) = 0; 100 101 102 /* triggers screen off and waits for it to complete */ 103 virtual void blank(const sp<IBinder>& display) = 0; 104 105 /* triggers screen on and waits for it to complete */ 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 /* connects to an external display */ 113 virtual void connectDisplay(const sp<ISurfaceTexture>& display) = 0; 114}; 115 116// ---------------------------------------------------------------------------- 117 118class BnSurfaceComposer: public BnInterface<ISurfaceComposer> { 119public: 120 enum { 121 // Note: BOOT_FINISHED must remain this value, it is called from 122 // Java by ActivityManagerService. 123 BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION, 124 CREATE_CONNECTION, 125 CREATE_GRAPHIC_BUFFER_ALLOC, 126 CREATE_DISPLAY_EVENT_CONNECTION, 127 CREATE_DISPLAY, 128 GET_BUILT_IN_DISPLAY, 129 SET_TRANSACTION_STATE, 130 AUTHENTICATE_SURFACE, 131 CAPTURE_SCREEN, 132 BLANK, 133 UNBLANK, 134 GET_DISPLAY_INFO, 135 CONNECT_DISPLAY, 136 }; 137 138 virtual status_t onTransact(uint32_t code, const Parcel& data, 139 Parcel* reply, uint32_t flags = 0); 140}; 141 142// ---------------------------------------------------------------------------- 143 144}; // namespace android 145 146#endif // ANDROID_GUI_ISURFACE_COMPOSER_H 147