ISurfaceComposer.cpp revision 92efd84f37ce5a8aae74dc9086f825a67b6894e9
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 41namespace android { 42 43class IDisplayEventConnection; 44 45class BpSurfaceComposer : public BpInterface<ISurfaceComposer> 46{ 47public: 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 void setTransactionState( 72 const Vector<ComposerState>& state, 73 const Vector<DisplayState>& displays, 74 uint32_t flags) 75 { 76 Parcel data, reply; 77 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 78 { 79 Vector<ComposerState>::const_iterator b(state.begin()); 80 Vector<ComposerState>::const_iterator e(state.end()); 81 data.writeInt32(state.size()); 82 for ( ; b != e ; ++b ) { 83 b->write(data); 84 } 85 } 86 { 87 Vector<DisplayState>::const_iterator b(displays.begin()); 88 Vector<DisplayState>::const_iterator e(displays.end()); 89 data.writeInt32(displays.size()); 90 for ( ; b != e ; ++b ) { 91 b->write(data); 92 } 93 } 94 data.writeInt32(flags); 95 remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply); 96 } 97 98 virtual void bootFinished() 99 { 100 Parcel data, reply; 101 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 102 remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply); 103 } 104 105 virtual status_t captureScreen(DisplayID dpy, 106 sp<IMemoryHeap>* heap, 107 uint32_t* width, uint32_t* height, PixelFormat* format, 108 uint32_t reqWidth, uint32_t reqHeight, 109 uint32_t minLayerZ, uint32_t maxLayerZ) 110 { 111 Parcel data, reply; 112 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 113 data.writeInt32(dpy); 114 data.writeInt32(reqWidth); 115 data.writeInt32(reqHeight); 116 data.writeInt32(minLayerZ); 117 data.writeInt32(maxLayerZ); 118 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply); 119 *heap = interface_cast<IMemoryHeap>(reply.readStrongBinder()); 120 *width = reply.readInt32(); 121 *height = reply.readInt32(); 122 *format = reply.readInt32(); 123 return reply.readInt32(); 124 } 125 126 virtual bool authenticateSurfaceTexture( 127 const sp<ISurfaceTexture>& surfaceTexture) const 128 { 129 Parcel data, reply; 130 int err = NO_ERROR; 131 err = data.writeInterfaceToken( 132 ISurfaceComposer::getInterfaceDescriptor()); 133 if (err != NO_ERROR) { 134 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " 135 "interface descriptor: %s (%d)", strerror(-err), -err); 136 return false; 137 } 138 err = data.writeStrongBinder(surfaceTexture->asBinder()); 139 if (err != NO_ERROR) { 140 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing " 141 "strong binder to parcel: %s (%d)", strerror(-err), -err); 142 return false; 143 } 144 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data, 145 &reply); 146 if (err != NO_ERROR) { 147 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " 148 "performing transaction: %s (%d)", strerror(-err), -err); 149 return false; 150 } 151 int32_t result = 0; 152 err = reply.readInt32(&result); 153 if (err != NO_ERROR) { 154 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error " 155 "retrieving result: %s (%d)", strerror(-err), -err); 156 return false; 157 } 158 return result != 0; 159 } 160 161 virtual sp<IDisplayEventConnection> createDisplayEventConnection() 162 { 163 Parcel data, reply; 164 sp<IDisplayEventConnection> result; 165 int err = data.writeInterfaceToken( 166 ISurfaceComposer::getInterfaceDescriptor()); 167 if (err != NO_ERROR) { 168 return result; 169 } 170 err = remote()->transact( 171 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION, 172 data, &reply); 173 if (err != NO_ERROR) { 174 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing " 175 "transaction: %s (%d)", strerror(-err), -err); 176 return result; 177 } 178 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder()); 179 return result; 180 } 181 182 virtual void blank() 183 { 184 Parcel data, reply; 185 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 186 remote()->transact(BnSurfaceComposer::BLANK, data, &reply); 187 } 188 189 virtual void unblank() 190 { 191 Parcel data, reply; 192 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 193 remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply); 194 } 195 196 virtual status_t getDisplayInfo(DisplayID dpy, DisplayInfo* info) 197 { 198 Parcel data, reply; 199 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 200 data.writeInt32(dpy); 201 remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply); 202 memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo)); 203 return reply.readInt32(); 204 } 205 206 207 virtual void connectDisplay(const sp<ISurfaceTexture> display) { 208 Parcel data, reply; 209 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor()); 210 data.writeStrongBinder(display->asBinder()); 211 remote()->transact(BnSurfaceComposer::CONNECT_DISPLAY, data, &reply); 212 } 213}; 214 215IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer"); 216 217// ---------------------------------------------------------------------- 218 219status_t BnSurfaceComposer::onTransact( 220 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 221{ 222 switch(code) { 223 case CREATE_CONNECTION: { 224 CHECK_INTERFACE(ISurfaceComposer, data, reply); 225 sp<IBinder> b = createConnection()->asBinder(); 226 reply->writeStrongBinder(b); 227 } break; 228 case CREATE_GRAPHIC_BUFFER_ALLOC: { 229 CHECK_INTERFACE(ISurfaceComposer, data, reply); 230 sp<IBinder> b = createGraphicBufferAlloc()->asBinder(); 231 reply->writeStrongBinder(b); 232 } break; 233 case SET_TRANSACTION_STATE: { 234 CHECK_INTERFACE(ISurfaceComposer, data, reply); 235 size_t count = data.readInt32(); 236 ComposerState s; 237 Vector<ComposerState> state; 238 state.setCapacity(count); 239 for (size_t i=0 ; i<count ; i++) { 240 s.read(data); 241 state.add(s); 242 } 243 count = data.readInt32(); 244 DisplayState d; 245 Vector<DisplayState> displays; 246 displays.setCapacity(count); 247 for (size_t i=0 ; i<count ; i++) { 248 d.read(data); 249 displays.add(d); 250 } 251 uint32_t flags = data.readInt32(); 252 setTransactionState(state, displays, flags); 253 } break; 254 case BOOT_FINISHED: { 255 CHECK_INTERFACE(ISurfaceComposer, data, reply); 256 bootFinished(); 257 } break; 258 case CAPTURE_SCREEN: { 259 CHECK_INTERFACE(ISurfaceComposer, data, reply); 260 DisplayID dpy = data.readInt32(); 261 uint32_t reqWidth = data.readInt32(); 262 uint32_t reqHeight = data.readInt32(); 263 uint32_t minLayerZ = data.readInt32(); 264 uint32_t maxLayerZ = data.readInt32(); 265 sp<IMemoryHeap> heap; 266 uint32_t w, h; 267 PixelFormat f; 268 status_t res = captureScreen(dpy, &heap, &w, &h, &f, 269 reqWidth, reqHeight, minLayerZ, maxLayerZ); 270 reply->writeStrongBinder(heap->asBinder()); 271 reply->writeInt32(w); 272 reply->writeInt32(h); 273 reply->writeInt32(f); 274 reply->writeInt32(res); 275 } break; 276 case AUTHENTICATE_SURFACE: { 277 CHECK_INTERFACE(ISurfaceComposer, data, reply); 278 sp<ISurfaceTexture> surfaceTexture = 279 interface_cast<ISurfaceTexture>(data.readStrongBinder()); 280 int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0; 281 reply->writeInt32(result); 282 } break; 283 case CREATE_DISPLAY_EVENT_CONNECTION: { 284 CHECK_INTERFACE(ISurfaceComposer, data, reply); 285 sp<IDisplayEventConnection> connection(createDisplayEventConnection()); 286 reply->writeStrongBinder(connection->asBinder()); 287 return NO_ERROR; 288 } break; 289 case BLANK: { 290 CHECK_INTERFACE(ISurfaceComposer, data, reply); 291 blank(); 292 } break; 293 case UNBLANK: { 294 CHECK_INTERFACE(ISurfaceComposer, data, reply); 295 unblank(); 296 } break; 297 case GET_DISPLAY_INFO: { 298 CHECK_INTERFACE(ISurfaceComposer, data, reply); 299 DisplayInfo info; 300 DisplayID dpy = data.readInt32(); 301 status_t result = getDisplayInfo(dpy, &info); 302 memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo)); 303 reply->writeInt32(result); 304 } break; 305 case CONNECT_DISPLAY: { 306 CHECK_INTERFACE(ISurfaceComposer, data, reply); 307 sp<ISurfaceTexture> surfaceTexture = 308 interface_cast<ISurfaceTexture>(data.readStrongBinder()); 309 connectDisplay(surfaceTexture); 310 } break; 311 default: 312 return BBinder::onTransact(code, data, reply, flags); 313 } 314 return NO_ERROR; 315} 316 317// ---------------------------------------------------------------------------- 318 319}; 320