1 /* 2 * Copyright (C) 2009 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 //#define LOG_NDEBUG 0 18 #define LOG_TAG "OMX" 19 #include <utils/Log.h> 20 21 #include <dlfcn.h> 22 23 #include "../include/OMX.h" 24 25 #include "../include/OMXNodeInstance.h" 26 27 #include <binder/IMemory.h> 28 #include <media/stagefright/foundation/ADebug.h> 29 #include <utils/threads.h> 30 31 #include "OMXMaster.h" 32 33 #include <OMX_Component.h> 34 35 namespace android { 36 37 //////////////////////////////////////////////////////////////////////////////// 38 39 // This provides the underlying Thread used by CallbackDispatcher. 40 // Note that deriving CallbackDispatcher from Thread does not work. 41 42 struct OMX::CallbackDispatcherThread : public Thread { 43 CallbackDispatcherThread(CallbackDispatcher *dispatcher) 44 : mDispatcher(dispatcher) { 45 } 46 47 private: 48 CallbackDispatcher *mDispatcher; 49 50 bool threadLoop(); 51 52 CallbackDispatcherThread(const CallbackDispatcherThread &); 53 CallbackDispatcherThread &operator=(const CallbackDispatcherThread &); 54 }; 55 56 //////////////////////////////////////////////////////////////////////////////// 57 58 struct OMX::CallbackDispatcher : public RefBase { 59 CallbackDispatcher(OMXNodeInstance *owner); 60 61 void post(const omx_message &msg); 62 63 bool loop(); 64 65 protected: 66 virtual ~CallbackDispatcher(); 67 68 private: 69 Mutex mLock; 70 71 OMXNodeInstance *mOwner; 72 bool mDone; 73 Condition mQueueChanged; 74 List<omx_message> mQueue; 75 76 sp<CallbackDispatcherThread> mThread; 77 78 void dispatch(const omx_message &msg); 79 80 CallbackDispatcher(const CallbackDispatcher &); 81 CallbackDispatcher &operator=(const CallbackDispatcher &); 82 }; 83 84 OMX::CallbackDispatcher::CallbackDispatcher(OMXNodeInstance *owner) 85 : mOwner(owner), 86 mDone(false) { 87 mThread = new CallbackDispatcherThread(this); 88 mThread->run("OMXCallbackDisp", ANDROID_PRIORITY_FOREGROUND); 89 } 90 91 OMX::CallbackDispatcher::~CallbackDispatcher() { 92 { 93 Mutex::Autolock autoLock(mLock); 94 95 mDone = true; 96 mQueueChanged.signal(); 97 } 98 99 // A join on self can happen if the last ref to CallbackDispatcher 100 // is released within the CallbackDispatcherThread loop 101 status_t status = mThread->join(); 102 if (status != WOULD_BLOCK) { 103 // Other than join to self, the only other error return codes are 104 // whatever readyToRun() returns, and we don't override that 105 CHECK_EQ(status, (status_t)NO_ERROR); 106 } 107 } 108 109 void OMX::CallbackDispatcher::post(const omx_message &msg) { 110 Mutex::Autolock autoLock(mLock); 111 112 mQueue.push_back(msg); 113 mQueueChanged.signal(); 114 } 115 116 void OMX::CallbackDispatcher::dispatch(const omx_message &msg) { 117 if (mOwner == NULL) { 118 ALOGV("Would have dispatched a message to a node that's already gone."); 119 return; 120 } 121 mOwner->onMessage(msg); 122 } 123 124 bool OMX::CallbackDispatcher::loop() { 125 for (;;) { 126 omx_message msg; 127 128 { 129 Mutex::Autolock autoLock(mLock); 130 while (!mDone && mQueue.empty()) { 131 mQueueChanged.wait(mLock); 132 } 133 134 if (mDone) { 135 break; 136 } 137 138 msg = *mQueue.begin(); 139 mQueue.erase(mQueue.begin()); 140 } 141 142 dispatch(msg); 143 } 144 145 return false; 146 } 147 148 //////////////////////////////////////////////////////////////////////////////// 149 150 bool OMX::CallbackDispatcherThread::threadLoop() { 151 return mDispatcher->loop(); 152 } 153 154 //////////////////////////////////////////////////////////////////////////////// 155 156 OMX::OMX() 157 : mMaster(new OMXMaster), 158 mNodeCounter(0) { 159 } 160 161 OMX::~OMX() { 162 delete mMaster; 163 mMaster = NULL; 164 } 165 166 void OMX::binderDied(const wp<IBinder> &the_late_who) { 167 OMXNodeInstance *instance; 168 169 { 170 Mutex::Autolock autoLock(mLock); 171 172 ssize_t index = mLiveNodes.indexOfKey(the_late_who); 173 CHECK(index >= 0); 174 175 instance = mLiveNodes.editValueAt(index); 176 mLiveNodes.removeItemsAt(index); 177 178 index = mDispatchers.indexOfKey(instance->nodeID()); 179 CHECK(index >= 0); 180 mDispatchers.removeItemsAt(index); 181 182 invalidateNodeID_l(instance->nodeID()); 183 } 184 185 instance->onObserverDied(mMaster); 186 } 187 188 bool OMX::livesLocally(node_id node, pid_t pid) { 189 return pid == getpid(); 190 } 191 192 status_t OMX::listNodes(List<ComponentInfo> *list) { 193 list->clear(); 194 195 OMX_U32 index = 0; 196 char componentName[256]; 197 while (mMaster->enumerateComponents( 198 componentName, sizeof(componentName), index) == OMX_ErrorNone) { 199 list->push_back(ComponentInfo()); 200 ComponentInfo &info = *--list->end(); 201 202 info.mName = componentName; 203 204 Vector<String8> roles; 205 OMX_ERRORTYPE err = 206 mMaster->getRolesOfComponent(componentName, &roles); 207 208 if (err == OMX_ErrorNone) { 209 for (OMX_U32 i = 0; i < roles.size(); ++i) { 210 info.mRoles.push_back(roles[i]); 211 } 212 } 213 214 ++index; 215 } 216 217 return OK; 218 } 219 220 status_t OMX::allocateNode( 221 const char *name, const sp<IOMXObserver> &observer, node_id *node) { 222 Mutex::Autolock autoLock(mLock); 223 224 *node = 0; 225 226 OMXNodeInstance *instance = new OMXNodeInstance(this, observer); 227 228 OMX_COMPONENTTYPE *handle; 229 OMX_ERRORTYPE err = mMaster->makeComponentInstance( 230 name, &OMXNodeInstance::kCallbacks, 231 instance, &handle); 232 233 if (err != OMX_ErrorNone) { 234 ALOGV("FAILED to allocate omx component '%s'", name); 235 236 instance->onGetHandleFailed(); 237 238 return UNKNOWN_ERROR; 239 } 240 241 *node = makeNodeID(instance); 242 mDispatchers.add(*node, new CallbackDispatcher(instance)); 243 244 instance->setHandle(*node, handle); 245 246 mLiveNodes.add(observer->asBinder(), instance); 247 observer->asBinder()->linkToDeath(this); 248 249 return OK; 250 } 251 252 status_t OMX::freeNode(node_id node) { 253 OMXNodeInstance *instance = findInstance(node); 254 255 ssize_t index = mLiveNodes.indexOfKey(instance->observer()->asBinder()); 256 if (index < 0) { 257 // This could conceivably happen if the observer dies at roughly the 258 // same time that a client attempts to free the node explicitly. 259 return OK; 260 } 261 mLiveNodes.removeItemsAt(index); 262 263 instance->observer()->asBinder()->unlinkToDeath(this); 264 265 status_t err = instance->freeNode(mMaster); 266 267 { 268 Mutex::Autolock autoLock(mLock); 269 index = mDispatchers.indexOfKey(node); 270 CHECK(index >= 0); 271 mDispatchers.removeItemsAt(index); 272 } 273 274 return err; 275 } 276 277 status_t OMX::sendCommand( 278 node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param) { 279 return findInstance(node)->sendCommand(cmd, param); 280 } 281 282 status_t OMX::getParameter( 283 node_id node, OMX_INDEXTYPE index, 284 void *params, size_t size) { 285 return findInstance(node)->getParameter( 286 index, params, size); 287 } 288 289 status_t OMX::setParameter( 290 node_id node, OMX_INDEXTYPE index, 291 const void *params, size_t size) { 292 return findInstance(node)->setParameter( 293 index, params, size); 294 } 295 296 status_t OMX::getConfig( 297 node_id node, OMX_INDEXTYPE index, 298 void *params, size_t size) { 299 return findInstance(node)->getConfig( 300 index, params, size); 301 } 302 303 status_t OMX::setConfig( 304 node_id node, OMX_INDEXTYPE index, 305 const void *params, size_t size) { 306 return findInstance(node)->setConfig( 307 index, params, size); 308 } 309 310 status_t OMX::getState( 311 node_id node, OMX_STATETYPE* state) { 312 return findInstance(node)->getState( 313 state); 314 } 315 316 status_t OMX::enableGraphicBuffers( 317 node_id node, OMX_U32 port_index, OMX_BOOL enable) { 318 return findInstance(node)->enableGraphicBuffers(port_index, enable); 319 } 320 321 status_t OMX::getGraphicBufferUsage( 322 node_id node, OMX_U32 port_index, OMX_U32* usage) { 323 return findInstance(node)->getGraphicBufferUsage(port_index, usage); 324 } 325 326 status_t OMX::storeMetaDataInBuffers( 327 node_id node, OMX_U32 port_index, OMX_BOOL enable) { 328 return findInstance(node)->storeMetaDataInBuffers(port_index, enable); 329 } 330 331 status_t OMX::useBuffer( 332 node_id node, OMX_U32 port_index, const sp<IMemory> ¶ms, 333 buffer_id *buffer) { 334 return findInstance(node)->useBuffer( 335 port_index, params, buffer); 336 } 337 338 status_t OMX::useGraphicBuffer( 339 node_id node, OMX_U32 port_index, 340 const sp<GraphicBuffer> &graphicBuffer, buffer_id *buffer) { 341 return findInstance(node)->useGraphicBuffer( 342 port_index, graphicBuffer, buffer); 343 } 344 345 status_t OMX::allocateBuffer( 346 node_id node, OMX_U32 port_index, size_t size, 347 buffer_id *buffer, void **buffer_data) { 348 return findInstance(node)->allocateBuffer( 349 port_index, size, buffer, buffer_data); 350 } 351 352 status_t OMX::allocateBufferWithBackup( 353 node_id node, OMX_U32 port_index, const sp<IMemory> ¶ms, 354 buffer_id *buffer) { 355 return findInstance(node)->allocateBufferWithBackup( 356 port_index, params, buffer); 357 } 358 359 status_t OMX::freeBuffer(node_id node, OMX_U32 port_index, buffer_id buffer) { 360 return findInstance(node)->freeBuffer( 361 port_index, buffer); 362 } 363 364 status_t OMX::fillBuffer(node_id node, buffer_id buffer) { 365 return findInstance(node)->fillBuffer(buffer); 366 } 367 368 status_t OMX::emptyBuffer( 369 node_id node, 370 buffer_id buffer, 371 OMX_U32 range_offset, OMX_U32 range_length, 372 OMX_U32 flags, OMX_TICKS timestamp) { 373 return findInstance(node)->emptyBuffer( 374 buffer, range_offset, range_length, flags, timestamp); 375 } 376 377 status_t OMX::getExtensionIndex( 378 node_id node, 379 const char *parameter_name, 380 OMX_INDEXTYPE *index) { 381 return findInstance(node)->getExtensionIndex( 382 parameter_name, index); 383 } 384 385 OMX_ERRORTYPE OMX::OnEvent( 386 node_id node, 387 OMX_IN OMX_EVENTTYPE eEvent, 388 OMX_IN OMX_U32 nData1, 389 OMX_IN OMX_U32 nData2, 390 OMX_IN OMX_PTR pEventData) { 391 ALOGV("OnEvent(%d, %ld, %ld)", eEvent, nData1, nData2); 392 393 omx_message msg; 394 msg.type = omx_message::EVENT; 395 msg.node = node; 396 msg.u.event_data.event = eEvent; 397 msg.u.event_data.data1 = nData1; 398 msg.u.event_data.data2 = nData2; 399 400 findDispatcher(node)->post(msg); 401 402 return OMX_ErrorNone; 403 } 404 405 OMX_ERRORTYPE OMX::OnEmptyBufferDone( 406 node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) { 407 ALOGV("OnEmptyBufferDone buffer=%p", pBuffer); 408 409 omx_message msg; 410 msg.type = omx_message::EMPTY_BUFFER_DONE; 411 msg.node = node; 412 msg.u.buffer_data.buffer = pBuffer; 413 414 findDispatcher(node)->post(msg); 415 416 return OMX_ErrorNone; 417 } 418 419 OMX_ERRORTYPE OMX::OnFillBufferDone( 420 node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) { 421 ALOGV("OnFillBufferDone buffer=%p", pBuffer); 422 423 omx_message msg; 424 msg.type = omx_message::FILL_BUFFER_DONE; 425 msg.node = node; 426 msg.u.extended_buffer_data.buffer = pBuffer; 427 msg.u.extended_buffer_data.range_offset = pBuffer->nOffset; 428 msg.u.extended_buffer_data.range_length = pBuffer->nFilledLen; 429 msg.u.extended_buffer_data.flags = pBuffer->nFlags; 430 msg.u.extended_buffer_data.timestamp = pBuffer->nTimeStamp; 431 msg.u.extended_buffer_data.platform_private = pBuffer->pPlatformPrivate; 432 msg.u.extended_buffer_data.data_ptr = pBuffer->pBuffer; 433 434 findDispatcher(node)->post(msg); 435 436 return OMX_ErrorNone; 437 } 438 439 OMX::node_id OMX::makeNodeID(OMXNodeInstance *instance) { 440 // mLock is already held. 441 442 node_id node = (node_id)++mNodeCounter; 443 mNodeIDToInstance.add(node, instance); 444 445 return node; 446 } 447 448 OMXNodeInstance *OMX::findInstance(node_id node) { 449 Mutex::Autolock autoLock(mLock); 450 451 ssize_t index = mNodeIDToInstance.indexOfKey(node); 452 453 return index < 0 ? NULL : mNodeIDToInstance.valueAt(index); 454 } 455 456 sp<OMX::CallbackDispatcher> OMX::findDispatcher(node_id node) { 457 Mutex::Autolock autoLock(mLock); 458 459 ssize_t index = mDispatchers.indexOfKey(node); 460 461 return index < 0 ? NULL : mDispatchers.valueAt(index); 462 } 463 464 void OMX::invalidateNodeID(node_id node) { 465 Mutex::Autolock autoLock(mLock); 466 invalidateNodeID_l(node); 467 } 468 469 void OMX::invalidateNodeID_l(node_id node) { 470 // mLock is held. 471 mNodeIDToInstance.removeItem(node); 472 } 473 474 } // namespace android 475