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