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 // tag as surfaceflinger 18 #define LOG_TAG "SurfaceFlinger" 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <binder/Parcel.h> 24 #include <binder/IMemory.h> 25 #include <binder/IPCThreadState.h> 26 #include <binder/IServiceManager.h> 27 28 #include <gui/BitTube.h> 29 #include <gui/IDisplayEventConnection.h> 30 #include <gui/ISurfaceComposer.h> 31 #include <gui/ISurfaceTexture.h> 32 33 #include <private/gui/LayerState.h> 34 35 #include <ui/DisplayInfo.h> 36 37 #include <utils/Log.h> 38 39 // --------------------------------------------------------------------------- 40 41 namespace android { 42 43 class IDisplayEventConnection; 44 45 class BpSurfaceComposer : public BpInterface<ISurfaceComposer> 46 { 47 public: 48 BpSurfaceComposer(const sp<IBinder>& impl) 49 : BpInterface<ISurfaceComposer>(impl) 50 { 51 } 52 53 virtual sp<ISurfaceComposerClient> createConnection() 54 { 55 uint32_t n; 56 Parcel data, reply; 57 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 58 remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply); 59 return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder()); 60 } 61 62 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc() 63 { 64 uint32_t n; 65 Parcel data, reply; 66 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 67 remote()->transact(BnSurfaceComposer::CREATE_GRAPHIC_BUFFER_ALLOC, data, &reply); 68 return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder()); 69 } 70 71 virtual sp<IMemoryHeap> getCblk() const 72 { 73 Parcel data, reply; 74 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 75 remote()->transact(BnSurfaceComposer::GET_CBLK, data, &reply); 76 return interface_cast<IMemoryHeap>(reply.readStrongBinder()); 77 } 78 79 virtual void setTransactionState(const Vector<ComposerState>& state, 80 int orientation, uint32_t flags) 81 { 82 Parcel data, reply; 83 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 84 Vector<ComposerState>::const_iterator b(state.begin()); 85 Vector<ComposerState>::const_iterator e(state.end()); 86 data.writeInt32(state.size()); 87 for ( ; b != e ; ++b ) { 88 b->write(data); 89 } 90 data.writeInt32(orientation); 91 data.writeInt32(flags); 92 remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply); 93 } 94 95 virtual void bootFinished() 96 { 97 Parcel data, reply; 98 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 99 remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply); 100 } 101 102 virtual status_t captureScreen(DisplayID dpy, 103 sp<IMemoryHeap>* heap, 104 uint32_t* width, uint32_t* height, PixelFormat* format, 105 uint32_t reqWidth, uint32_t reqHeight, 106 uint32_t minLayerZ, uint32_t maxLayerZ) 107 { 108 Parcel data, reply; 109 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 110 data.writeInt32(dpy); 111 data.writeInt32(reqWidth); 112 data.writeInt32(reqHeight); 113 data.writeInt32(minLayerZ); 114 data.writeInt32(maxLayerZ); 115 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply); 116 *heap = interface_cast<IMemoryHeap>(reply.readStrongBinder()); 117 *width = reply.readInt32(); 118 *height = reply.readInt32(); 119 *format = reply.readInt32(); 120 return reply.readInt32(); 121 } 122 123 virtual status_t turnElectronBeamOff(int32_t mode) 124 { 125 Parcel data, reply; 126 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 127 data.writeInt32(mode); 128 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_OFF, data, &reply); 129 return reply.readInt32(); 130 } 131 132 virtual status_t turnElectronBeamOn(int32_t mode) 133 { 134 Parcel data, reply; 135 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 136 data.writeInt32(mode); 137 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_ON, data, &reply); 138 return reply.readInt32(); 139 } 140 141 virtual bool authenticateSurfaceTexture( 142 const sp<ISurfaceTexture>& surfaceTexture) const 143 { 144 Parcel data, reply; 145 int err = NO_ERROR; 146 err = data.writeInterfaceToken( 147 ISurfaceComposer::getInterfaceDescriptor()); 148 if (err != NO_ERROR) { 149 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " 150 "interface descriptor: %s (%d)", strerror(-err), -err); 151 return false; 152 } 153 err = data.writeStrongBinder(surfaceTexture->asBinder()); 154 if (err != NO_ERROR) { 155 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " 156 "strong binder to parcel: %s (%d)", strerror(-err), -err); 157 return false; 158 } 159 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data, 160 &reply); 161 if (err != NO_ERROR) { 162 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " 163 "performing transaction: %s (%d)", strerror(-err), -err); 164 return false; 165 } 166 int32_t result = 0; 167 err = reply.readInt32(&result); 168 if (err != NO_ERROR) { 169 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " 170 "retrieving result: %s (%d)", strerror(-err), -err); 171 return false; 172 } 173 return result != 0; 174 } 175 176 virtual sp<IDisplayEventConnection> createDisplayEventConnection() 177 { 178 Parcel data, reply; 179 sp<IDisplayEventConnection> result; 180 int err = data.writeInterfaceToken( 181 ISurfaceComposer::getInterfaceDescriptor()); 182 if (err != NO_ERROR) { 183 return result; 184 } 185 err = remote()->transact( 186 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION, 187 data, &reply); 188 if (err != NO_ERROR) { 189 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing " 190 "transaction: %s (%d)", strerror(-err), -err); 191 return result; 192 } 193 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder()); 194 return result; 195 } 196 }; 197 198 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer"); 199 200 // ---------------------------------------------------------------------- 201 202 status_t BnSurfaceComposer::onTransact( 203 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 204 { 205 switch(code) { 206 case CREATE_CONNECTION: { 207 CHECK_INTERFACE(ISurfaceComposer, data, reply); 208 sp<IBinder> b = createConnection()->asBinder(); 209 reply->writeStrongBinder(b); 210 } break; 211 case CREATE_GRAPHIC_BUFFER_ALLOC: { 212 CHECK_INTERFACE(ISurfaceComposer, data, reply); 213 sp<IBinder> b = createGraphicBufferAlloc()->asBinder(); 214 reply->writeStrongBinder(b); 215 } break; 216 case SET_TRANSACTION_STATE: { 217 CHECK_INTERFACE(ISurfaceComposer, data, reply); 218 size_t count = data.readInt32(); 219 ComposerState s; 220 Vector<ComposerState> state; 221 state.setCapacity(count); 222 for (size_t i=0 ; i<count ; i++) { 223 s.read(data); 224 state.add(s); 225 } 226 int orientation = data.readInt32(); 227 uint32_t flags = data.readInt32(); 228 setTransactionState(state, orientation, flags); 229 } break; 230 case BOOT_FINISHED: { 231 CHECK_INTERFACE(ISurfaceComposer, data, reply); 232 bootFinished(); 233 } break; 234 case GET_CBLK: { 235 CHECK_INTERFACE(ISurfaceComposer, data, reply); 236 sp<IBinder> b = getCblk()->asBinder(); 237 reply->writeStrongBinder(b); 238 } break; 239 case CAPTURE_SCREEN: { 240 CHECK_INTERFACE(ISurfaceComposer, data, reply); 241 DisplayID dpy = data.readInt32(); 242 uint32_t reqWidth = data.readInt32(); 243 uint32_t reqHeight = data.readInt32(); 244 uint32_t minLayerZ = data.readInt32(); 245 uint32_t maxLayerZ = data.readInt32(); 246 sp<IMemoryHeap> heap; 247 uint32_t w, h; 248 PixelFormat f; 249 status_t res = captureScreen(dpy, &heap, &w, &h, &f, 250 reqWidth, reqHeight, minLayerZ, maxLayerZ); 251 reply->writeStrongBinder(heap->asBinder()); 252 reply->writeInt32(w); 253 reply->writeInt32(h); 254 reply->writeInt32(f); 255 reply->writeInt32(res); 256 } break; 257 case TURN_ELECTRON_BEAM_OFF: { 258 CHECK_INTERFACE(ISurfaceComposer, data, reply); 259 int32_t mode = data.readInt32(); 260 status_t res = turnElectronBeamOff(mode); 261 reply->writeInt32(res); 262 } break; 263 case TURN_ELECTRON_BEAM_ON: { 264 CHECK_INTERFACE(ISurfaceComposer, data, reply); 265 int32_t mode = data.readInt32(); 266 status_t res = turnElectronBeamOn(mode); 267 reply->writeInt32(res); 268 } break; 269 case AUTHENTICATE_SURFACE: { 270 CHECK_INTERFACE(ISurfaceComposer, data, reply); 271 sp<ISurfaceTexture> surfaceTexture = 272 interface_cast<ISurfaceTexture>(data.readStrongBinder()); 273 int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0; 274 reply->writeInt32(result); 275 } break; 276 case CREATE_DISPLAY_EVENT_CONNECTION: { 277 CHECK_INTERFACE(ISurfaceComposer, data, reply); 278 sp<IDisplayEventConnection> connection(createDisplayEventConnection()); 279 reply->writeStrongBinder(connection->asBinder()); 280 return NO_ERROR; 281 } break; 282 default: 283 return BBinder::onTransact(code, data, reply, flags); 284 } 285 return NO_ERROR; 286 } 287 288 // ---------------------------------------------------------------------------- 289 290 }; 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