MediaPlayerService.cpp revision 148c1a2a96774517407717b61e5bc9cb08be8806
1/* 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18// Proxy for media player implementations 19 20//#define LOG_NDEBUG 0 21#define LOG_TAG "MediaPlayerService" 22#include <utils/Log.h> 23 24#include <sys/types.h> 25#include <sys/stat.h> 26#include <dirent.h> 27#include <unistd.h> 28 29#include <string.h> 30 31#include <cutils/atomic.h> 32#include <cutils/properties.h> // for property_get 33 34#include <utils/misc.h> 35 36#include <android_runtime/ActivityManager.h> 37 38#include <binder/IPCThreadState.h> 39#include <binder/IServiceManager.h> 40#include <binder/MemoryHeapBase.h> 41#include <binder/MemoryBase.h> 42#include <utils/Errors.h> // for status_t 43#include <utils/String8.h> 44#include <utils/Vector.h> 45#include <cutils/properties.h> 46 47#include <media/MediaPlayerInterface.h> 48#include <media/mediarecorder.h> 49#include <media/MediaMetadataRetrieverInterface.h> 50#include <media/Metadata.h> 51#include <media/AudioTrack.h> 52 53#include "MediaRecorderClient.h" 54#include "MediaPlayerService.h" 55#include "MetadataRetrieverClient.h" 56 57#include "MidiFile.h" 58#include "VorbisPlayer.h" 59#include <media/PVPlayer.h> 60#include "TestPlayerStub.h" 61#include "StagefrightPlayer.h" 62 63#include <OMX.h> 64 65/* desktop Linux needs a little help with gettid() */ 66#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS) 67#define __KERNEL__ 68# include <linux/unistd.h> 69#ifdef _syscall0 70_syscall0(pid_t,gettid) 71#else 72pid_t gettid() { return syscall(__NR_gettid);} 73#endif 74#undef __KERNEL__ 75#endif 76 77namespace { 78using android::media::Metadata; 79using android::status_t; 80using android::OK; 81using android::BAD_VALUE; 82using android::NOT_ENOUGH_DATA; 83using android::Parcel; 84 85// Max number of entries in the filter. 86const int kMaxFilterSize = 64; // I pulled that out of thin air. 87 88// FIXME: Move all the metadata related function in the Metadata.cpp 89 90 91// Unmarshall a filter from a Parcel. 92// Filter format in a parcel: 93// 94// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 95// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 96// | number of entries (n) | 97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 98// | metadata type 1 | 99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 100// | metadata type 2 | 101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 102// .... 103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 104// | metadata type n | 105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 106// 107// @param p Parcel that should start with a filter. 108// @param[out] filter On exit contains the list of metadata type to be 109// filtered. 110// @param[out] status On exit contains the status code to be returned. 111// @return true if the parcel starts with a valid filter. 112bool unmarshallFilter(const Parcel& p, 113 Metadata::Filter *filter, 114 status_t *status) 115{ 116 int32_t val; 117 if (p.readInt32(&val) != OK) 118 { 119 LOGE("Failed to read filter's length"); 120 *status = NOT_ENOUGH_DATA; 121 return false; 122 } 123 124 if( val > kMaxFilterSize || val < 0) 125 { 126 LOGE("Invalid filter len %d", val); 127 *status = BAD_VALUE; 128 return false; 129 } 130 131 const size_t num = val; 132 133 filter->clear(); 134 filter->setCapacity(num); 135 136 size_t size = num * sizeof(Metadata::Type); 137 138 139 if (p.dataAvail() < size) 140 { 141 LOGE("Filter too short expected %d but got %d", size, p.dataAvail()); 142 *status = NOT_ENOUGH_DATA; 143 return false; 144 } 145 146 const Metadata::Type *data = 147 static_cast<const Metadata::Type*>(p.readInplace(size)); 148 149 if (NULL == data) 150 { 151 LOGE("Filter had no data"); 152 *status = BAD_VALUE; 153 return false; 154 } 155 156 // TODO: The stl impl of vector would be more efficient here 157 // because it degenerates into a memcpy on pod types. Try to 158 // replace later or use stl::set. 159 for (size_t i = 0; i < num; ++i) 160 { 161 filter->add(*data); 162 ++data; 163 } 164 *status = OK; 165 return true; 166} 167 168// @param filter Of metadata type. 169// @param val To be searched. 170// @return true if a match was found. 171bool findMetadata(const Metadata::Filter& filter, const int32_t val) 172{ 173 // Deal with empty and ANY right away 174 if (filter.isEmpty()) return false; 175 if (filter[0] == Metadata::kAny) return true; 176 177 return filter.indexOf(val) >= 0; 178} 179 180} // anonymous namespace 181 182 183namespace android { 184 185// TODO: Temp hack until we can register players 186typedef struct { 187 const char *extension; 188 const player_type playertype; 189} extmap; 190extmap FILE_EXTS [] = { 191 {".mid", SONIVOX_PLAYER}, 192 {".midi", SONIVOX_PLAYER}, 193 {".smf", SONIVOX_PLAYER}, 194 {".xmf", SONIVOX_PLAYER}, 195 {".imy", SONIVOX_PLAYER}, 196 {".rtttl", SONIVOX_PLAYER}, 197 {".rtx", SONIVOX_PLAYER}, 198 {".ota", SONIVOX_PLAYER}, 199 {".ogg", VORBIS_PLAYER}, 200 {".oga", VORBIS_PLAYER}, 201}; 202 203// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround 204/* static */ const uint32_t MediaPlayerService::AudioOutput::kAudioVideoDelayMs = 96; 205/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4; 206/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false; 207 208void MediaPlayerService::instantiate() { 209 defaultServiceManager()->addService( 210 String16("media.player"), new MediaPlayerService()); 211} 212 213MediaPlayerService::MediaPlayerService() 214{ 215 LOGV("MediaPlayerService created"); 216 mNextConnId = 1; 217} 218 219MediaPlayerService::~MediaPlayerService() 220{ 221 LOGV("MediaPlayerService destroyed"); 222} 223 224sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid) 225{ 226#ifndef NO_OPENCORE 227 sp<MediaRecorderClient> recorder = new MediaRecorderClient(pid); 228#else 229 sp<MediaRecorderClient> recorder = NULL; 230#endif 231 LOGV("Create new media recorder client from pid %d", pid); 232 return recorder; 233} 234 235sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid) 236{ 237 sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid); 238 LOGV("Create new media retriever from pid %d", pid); 239 return retriever; 240} 241 242sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url) 243{ 244 int32_t connId = android_atomic_inc(&mNextConnId); 245 sp<Client> c = new Client(this, pid, connId, client); 246 LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId); 247 if (NO_ERROR != c->setDataSource(url)) 248 { 249 c.clear(); 250 return c; 251 } 252 wp<Client> w = c; 253 Mutex::Autolock lock(mLock); 254 mClients.add(w); 255 return c; 256} 257 258sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, 259 int fd, int64_t offset, int64_t length) 260{ 261 int32_t connId = android_atomic_inc(&mNextConnId); 262 sp<Client> c = new Client(this, pid, connId, client); 263 LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld", 264 connId, pid, fd, offset, length); 265 if (NO_ERROR != c->setDataSource(fd, offset, length)) { 266 c.clear(); 267 } else { 268 wp<Client> w = c; 269 Mutex::Autolock lock(mLock); 270 mClients.add(w); 271 } 272 ::close(fd); 273 return c; 274} 275 276sp<IOMX> MediaPlayerService::createOMX() { 277 return new OMX; 278} 279 280status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const 281{ 282 const size_t SIZE = 256; 283 char buffer[SIZE]; 284 String8 result; 285 286 result.append(" AudioCache\n"); 287 if (mHeap != 0) { 288 snprintf(buffer, 255, " heap base(%p), size(%d), flags(%d), device(%s)\n", 289 mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice()); 290 result.append(buffer); 291 } 292 snprintf(buffer, 255, " msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n", 293 mMsecsPerFrame, mChannelCount, mFormat, mFrameCount); 294 result.append(buffer); 295 snprintf(buffer, 255, " sample rate(%d), size(%d), error(%d), command complete(%s)\n", 296 mSampleRate, mSize, mError, mCommandComplete?"true":"false"); 297 result.append(buffer); 298 ::write(fd, result.string(), result.size()); 299 return NO_ERROR; 300} 301 302status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const 303{ 304 const size_t SIZE = 256; 305 char buffer[SIZE]; 306 String8 result; 307 308 result.append(" AudioOutput\n"); 309 snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n", 310 mStreamType, mLeftVolume, mRightVolume); 311 result.append(buffer); 312 snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n", 313 mMsecsPerFrame, mLatency); 314 result.append(buffer); 315 ::write(fd, result.string(), result.size()); 316 if (mTrack != 0) { 317 mTrack->dump(fd, args); 318 } 319 return NO_ERROR; 320} 321 322status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const 323{ 324 const size_t SIZE = 256; 325 char buffer[SIZE]; 326 String8 result; 327 result.append(" Client\n"); 328 snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n", 329 mPid, mConnId, mStatus, mLoop?"true": "false"); 330 result.append(buffer); 331 write(fd, result.string(), result.size()); 332 if (mAudioOutput != 0) { 333 mAudioOutput->dump(fd, args); 334 } 335 write(fd, "\n", 1); 336 return NO_ERROR; 337} 338 339static int myTid() { 340#ifdef HAVE_GETTID 341 return gettid(); 342#else 343 return getpid(); 344#endif 345} 346 347#if defined(__arm__) 348extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, 349 size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); 350extern "C" void free_malloc_leak_info(uint8_t* info); 351 352void memStatus(int fd, const Vector<String16>& args) 353{ 354 const size_t SIZE = 256; 355 char buffer[SIZE]; 356 String8 result; 357 358 typedef struct { 359 size_t size; 360 size_t dups; 361 intptr_t * backtrace; 362 } AllocEntry; 363 364 uint8_t *info = NULL; 365 size_t overallSize = 0; 366 size_t infoSize = 0; 367 size_t totalMemory = 0; 368 size_t backtraceSize = 0; 369 370 get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize); 371 if (info) { 372 uint8_t *ptr = info; 373 size_t count = overallSize / infoSize; 374 375 snprintf(buffer, SIZE, " Allocation count %i\n", count); 376 result.append(buffer); 377 378 AllocEntry * entries = new AllocEntry[count]; 379 380 for (size_t i = 0; i < count; i++) { 381 // Each entry should be size_t, size_t, intptr_t[backtraceSize] 382 AllocEntry *e = &entries[i]; 383 384 e->size = *reinterpret_cast<size_t *>(ptr); 385 ptr += sizeof(size_t); 386 387 e->dups = *reinterpret_cast<size_t *>(ptr); 388 ptr += sizeof(size_t); 389 390 e->backtrace = reinterpret_cast<intptr_t *>(ptr); 391 ptr += sizeof(intptr_t) * backtraceSize; 392 } 393 394 // Now we need to sort the entries. They come sorted by size but 395 // not by stack trace which causes problems using diff. 396 bool moved; 397 do { 398 moved = false; 399 for (size_t i = 0; i < (count - 1); i++) { 400 AllocEntry *e1 = &entries[i]; 401 AllocEntry *e2 = &entries[i+1]; 402 403 bool swap = e1->size < e2->size; 404 if (e1->size == e2->size) { 405 for(size_t j = 0; j < backtraceSize; j++) { 406 if (e1->backtrace[j] == e2->backtrace[j]) { 407 continue; 408 } 409 swap = e1->backtrace[j] < e2->backtrace[j]; 410 break; 411 } 412 } 413 if (swap) { 414 AllocEntry t = entries[i]; 415 entries[i] = entries[i+1]; 416 entries[i+1] = t; 417 moved = true; 418 } 419 } 420 } while (moved); 421 422 for (size_t i = 0; i < count; i++) { 423 AllocEntry *e = &entries[i]; 424 425 snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups); 426 result.append(buffer); 427 for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) { 428 if (ct) { 429 result.append(", "); 430 } 431 snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]); 432 result.append(buffer); 433 } 434 result.append("\n"); 435 } 436 437 delete[] entries; 438 free_malloc_leak_info(info); 439 } 440 441 write(fd, result.string(), result.size()); 442} 443#endif 444 445status_t MediaPlayerService::dump(int fd, const Vector<String16>& args) 446{ 447 const size_t SIZE = 256; 448 char buffer[SIZE]; 449 String8 result; 450 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 451 snprintf(buffer, SIZE, "Permission Denial: " 452 "can't dump MediaPlayerService from pid=%d, uid=%d\n", 453 IPCThreadState::self()->getCallingPid(), 454 IPCThreadState::self()->getCallingUid()); 455 result.append(buffer); 456 } else { 457 Mutex::Autolock lock(mLock); 458 for (int i = 0, n = mClients.size(); i < n; ++i) { 459 sp<Client> c = mClients[i].promote(); 460 if (c != 0) c->dump(fd, args); 461 } 462 result.append(" Files opened and/or mapped:\n"); 463 snprintf(buffer, SIZE, "/proc/%d/maps", myTid()); 464 FILE *f = fopen(buffer, "r"); 465 if (f) { 466 while (!feof(f)) { 467 fgets(buffer, SIZE, f); 468 if (strstr(buffer, " /sdcard/") || 469 strstr(buffer, " /system/sounds/") || 470 strstr(buffer, " /system/media/")) { 471 result.append(" "); 472 result.append(buffer); 473 } 474 } 475 fclose(f); 476 } else { 477 result.append("couldn't open "); 478 result.append(buffer); 479 result.append("\n"); 480 } 481 482 snprintf(buffer, SIZE, "/proc/%d/fd", myTid()); 483 DIR *d = opendir(buffer); 484 if (d) { 485 struct dirent *ent; 486 while((ent = readdir(d)) != NULL) { 487 if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) { 488 snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name); 489 struct stat s; 490 if (lstat(buffer, &s) == 0) { 491 if ((s.st_mode & S_IFMT) == S_IFLNK) { 492 char linkto[256]; 493 int len = readlink(buffer, linkto, sizeof(linkto)); 494 if(len > 0) { 495 if(len > 255) { 496 linkto[252] = '.'; 497 linkto[253] = '.'; 498 linkto[254] = '.'; 499 linkto[255] = 0; 500 } else { 501 linkto[len] = 0; 502 } 503 if (strstr(linkto, "/sdcard/") == linkto || 504 strstr(linkto, "/system/sounds/") == linkto || 505 strstr(linkto, "/system/media/") == linkto) { 506 result.append(" "); 507 result.append(buffer); 508 result.append(" -> "); 509 result.append(linkto); 510 result.append("\n"); 511 } 512 } 513 } else { 514 result.append(" unexpected type for "); 515 result.append(buffer); 516 result.append("\n"); 517 } 518 } 519 } 520 } 521 closedir(d); 522 } else { 523 result.append("couldn't open "); 524 result.append(buffer); 525 result.append("\n"); 526 } 527 528#if defined(__arm__) 529 bool dumpMem = false; 530 for (size_t i = 0; i < args.size(); i++) { 531 if (args[i] == String16("-m")) { 532 dumpMem = true; 533 } 534 } 535 if (dumpMem) { 536 memStatus(fd, args); 537 } 538#endif 539 } 540 write(fd, result.string(), result.size()); 541 return NO_ERROR; 542} 543 544void MediaPlayerService::removeClient(wp<Client> client) 545{ 546 Mutex::Autolock lock(mLock); 547 mClients.remove(client); 548} 549 550MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid, 551 int32_t connId, const sp<IMediaPlayerClient>& client) 552{ 553 LOGV("Client(%d) constructor", connId); 554 mPid = pid; 555 mConnId = connId; 556 mService = service; 557 mClient = client; 558 mLoop = false; 559 mStatus = NO_INIT; 560#if CALLBACK_ANTAGONIZER 561 LOGD("create Antagonizer"); 562 mAntagonizer = new Antagonizer(notify, this); 563#endif 564} 565 566MediaPlayerService::Client::~Client() 567{ 568 LOGV("Client(%d) destructor pid = %d", mConnId, mPid); 569 mAudioOutput.clear(); 570 wp<Client> client(this); 571 disconnect(); 572 mService->removeClient(client); 573} 574 575void MediaPlayerService::Client::disconnect() 576{ 577 LOGV("disconnect(%d) from pid %d", mConnId, mPid); 578 // grab local reference and clear main reference to prevent future 579 // access to object 580 sp<MediaPlayerBase> p; 581 { 582 Mutex::Autolock l(mLock); 583 p = mPlayer; 584 } 585 mClient.clear(); 586 587 mPlayer.clear(); 588 589 // clear the notification to prevent callbacks to dead client 590 // and reset the player. We assume the player will serialize 591 // access to itself if necessary. 592 if (p != 0) { 593 p->setNotifyCallback(0, 0); 594#if CALLBACK_ANTAGONIZER 595 LOGD("kill Antagonizer"); 596 mAntagonizer->kill(); 597#endif 598 p->reset(); 599 } 600 601 IPCThreadState::self()->flushCommands(); 602} 603 604static player_type getDefaultPlayerType() { 605 char value[PROPERTY_VALUE_MAX]; 606 if (property_get("media.stagefright.enable-player", value, NULL) 607 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 608 return STAGEFRIGHT_PLAYER; 609 } 610 611 return PV_PLAYER; 612} 613 614player_type getPlayerType(int fd, int64_t offset, int64_t length) 615{ 616 char buf[20]; 617 lseek(fd, offset, SEEK_SET); 618 read(fd, buf, sizeof(buf)); 619 lseek(fd, offset, SEEK_SET); 620 621 long ident = *((long*)buf); 622 623 // Ogg vorbis? 624 if (ident == 0x5367674f) // 'OggS' 625 return VORBIS_PLAYER; 626 627 // Some kind of MIDI? 628 EAS_DATA_HANDLE easdata; 629 if (EAS_Init(&easdata) == EAS_SUCCESS) { 630 EAS_FILE locator; 631 locator.path = NULL; 632 locator.fd = fd; 633 locator.offset = offset; 634 locator.length = length; 635 EAS_HANDLE eashandle; 636 if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) { 637 EAS_CloseFile(easdata, eashandle); 638 EAS_Shutdown(easdata); 639 return SONIVOX_PLAYER; 640 } 641 EAS_Shutdown(easdata); 642 } 643 644 return getDefaultPlayerType(); 645} 646 647player_type getPlayerType(const char* url) 648{ 649 if (TestPlayerStub::canBeUsed(url)) { 650 return TEST_PLAYER; 651 } 652 653 // use MidiFile for MIDI extensions 654 int lenURL = strlen(url); 655 for (int i = 0; i < NELEM(FILE_EXTS); ++i) { 656 int len = strlen(FILE_EXTS[i].extension); 657 int start = lenURL - len; 658 if (start > 0) { 659 if (!strncmp(url + start, FILE_EXTS[i].extension, len)) { 660 return FILE_EXTS[i].playertype; 661 } 662 } 663 } 664 665 return getDefaultPlayerType(); 666} 667 668static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie, 669 notify_callback_f notifyFunc) 670{ 671 sp<MediaPlayerBase> p; 672 switch (playerType) { 673#ifndef NO_OPENCORE 674 case PV_PLAYER: 675 LOGV(" create PVPlayer"); 676 p = new PVPlayer(); 677 break; 678#endif 679 case SONIVOX_PLAYER: 680 LOGV(" create MidiFile"); 681 p = new MidiFile(); 682 break; 683 case VORBIS_PLAYER: 684 LOGV(" create VorbisPlayer"); 685 p = new VorbisPlayer(); 686 break; 687 case STAGEFRIGHT_PLAYER: 688 LOGV(" create StagefrightPlayer"); 689 p = new StagefrightPlayer; 690 break; 691 case TEST_PLAYER: 692 LOGV("Create Test Player stub"); 693 p = new TestPlayerStub(); 694 break; 695 } 696 if (p != NULL) { 697 if (p->initCheck() == NO_ERROR) { 698 p->setNotifyCallback(cookie, notifyFunc); 699 } else { 700 p.clear(); 701 } 702 } 703 if (p == NULL) { 704 LOGE("Failed to create player object"); 705 } 706 return p; 707} 708 709sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType) 710{ 711 // determine if we have the right player type 712 sp<MediaPlayerBase> p = mPlayer; 713 if ((p != NULL) && (p->playerType() != playerType)) { 714 LOGV("delete player"); 715 p.clear(); 716 } 717 if (p == NULL) { 718 p = android::createPlayer(playerType, this, notify); 719 } 720 return p; 721} 722 723status_t MediaPlayerService::Client::setDataSource(const char *url) 724{ 725 LOGV("setDataSource(%s)", url); 726 if (url == NULL) 727 return UNKNOWN_ERROR; 728 729 if (strncmp(url, "content://", 10) == 0) { 730 // get a filedescriptor for the content Uri and 731 // pass it to the setDataSource(fd) method 732 733 String16 url16(url); 734 int fd = android::openContentProviderFile(url16); 735 if (fd < 0) 736 { 737 LOGE("Couldn't open fd for %s", url); 738 return UNKNOWN_ERROR; 739 } 740 setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus 741 close(fd); 742 return mStatus; 743 } else { 744 player_type playerType = getPlayerType(url); 745 LOGV("player type = %d", playerType); 746 747 // create the right type of player 748 sp<MediaPlayerBase> p = createPlayer(playerType); 749 if (p == NULL) return NO_INIT; 750 751 if (!p->hardwareOutput()) { 752 mAudioOutput = new AudioOutput(); 753 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 754 } 755 756 // now set data source 757 LOGV(" setDataSource"); 758 mStatus = p->setDataSource(url); 759 if (mStatus == NO_ERROR) { 760 mPlayer = p; 761 } else { 762 LOGE(" error: %d", mStatus); 763 } 764 return mStatus; 765 } 766} 767 768status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length) 769{ 770 LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 771 struct stat sb; 772 int ret = fstat(fd, &sb); 773 if (ret != 0) { 774 LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 775 return UNKNOWN_ERROR; 776 } 777 778 LOGV("st_dev = %llu", sb.st_dev); 779 LOGV("st_mode = %u", sb.st_mode); 780 LOGV("st_uid = %lu", sb.st_uid); 781 LOGV("st_gid = %lu", sb.st_gid); 782 LOGV("st_size = %llu", sb.st_size); 783 784 if (offset >= sb.st_size) { 785 LOGE("offset error"); 786 ::close(fd); 787 return UNKNOWN_ERROR; 788 } 789 if (offset + length > sb.st_size) { 790 length = sb.st_size - offset; 791 LOGV("calculated length = %lld", length); 792 } 793 794 player_type playerType = getPlayerType(fd, offset, length); 795 LOGV("player type = %d", playerType); 796 797 // create the right type of player 798 sp<MediaPlayerBase> p = createPlayer(playerType); 799 if (p == NULL) return NO_INIT; 800 801 if (!p->hardwareOutput()) { 802 mAudioOutput = new AudioOutput(); 803 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 804 } 805 806 // now set data source 807 mStatus = p->setDataSource(fd, offset, length); 808 if (mStatus == NO_ERROR) mPlayer = p; 809 return mStatus; 810} 811 812status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface) 813{ 814 LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get()); 815 sp<MediaPlayerBase> p = getPlayer(); 816 if (p == 0) return UNKNOWN_ERROR; 817 return p->setVideoSurface(surface); 818} 819 820status_t MediaPlayerService::Client::invoke(const Parcel& request, 821 Parcel *reply) 822{ 823 sp<MediaPlayerBase> p = getPlayer(); 824 if (p == NULL) return UNKNOWN_ERROR; 825 return p->invoke(request, reply); 826} 827 828// This call doesn't need to access the native player. 829status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter) 830{ 831 status_t status; 832 media::Metadata::Filter allow, drop; 833 834 if (unmarshallFilter(filter, &allow, &status) && 835 unmarshallFilter(filter, &drop, &status)) { 836 Mutex::Autolock lock(mLock); 837 838 mMetadataAllow = allow; 839 mMetadataDrop = drop; 840 } 841 return status; 842} 843 844status_t MediaPlayerService::Client::getMetadata( 845 bool update_only, bool apply_filter, Parcel *reply) 846{ 847 sp<MediaPlayerBase> player = getPlayer(); 848 if (player == 0) return UNKNOWN_ERROR; 849 850 status_t status; 851 // Placeholder for the return code, updated by the caller. 852 reply->writeInt32(-1); 853 854 media::Metadata::Filter ids; 855 856 // We don't block notifications while we fetch the data. We clear 857 // mMetadataUpdated first so we don't lose notifications happening 858 // during the rest of this call. 859 { 860 Mutex::Autolock lock(mLock); 861 if (update_only) { 862 ids = mMetadataUpdated; 863 } 864 mMetadataUpdated.clear(); 865 } 866 867 media::Metadata metadata(reply); 868 869 metadata.appendHeader(); 870 status = player->getMetadata(ids, reply); 871 872 if (status != OK) { 873 metadata.resetParcel(); 874 LOGE("getMetadata failed %d", status); 875 return status; 876 } 877 878 // FIXME: Implement filtering on the result. Not critical since 879 // filtering takes place on the update notifications already. This 880 // would be when all the metadata are fetch and a filter is set. 881 882 // Everything is fine, update the metadata length. 883 metadata.updateLength(); 884 return OK; 885} 886 887status_t MediaPlayerService::Client::prepareAsync() 888{ 889 LOGV("[%d] prepareAsync", mConnId); 890 sp<MediaPlayerBase> p = getPlayer(); 891 if (p == 0) return UNKNOWN_ERROR; 892 status_t ret = p->prepareAsync(); 893#if CALLBACK_ANTAGONIZER 894 LOGD("start Antagonizer"); 895 if (ret == NO_ERROR) mAntagonizer->start(); 896#endif 897 return ret; 898} 899 900status_t MediaPlayerService::Client::start() 901{ 902 LOGV("[%d] start", mConnId); 903 sp<MediaPlayerBase> p = getPlayer(); 904 if (p == 0) return UNKNOWN_ERROR; 905 p->setLooping(mLoop); 906 return p->start(); 907} 908 909status_t MediaPlayerService::Client::stop() 910{ 911 LOGV("[%d] stop", mConnId); 912 sp<MediaPlayerBase> p = getPlayer(); 913 if (p == 0) return UNKNOWN_ERROR; 914 return p->stop(); 915} 916 917status_t MediaPlayerService::Client::pause() 918{ 919 LOGV("[%d] pause", mConnId); 920 sp<MediaPlayerBase> p = getPlayer(); 921 if (p == 0) return UNKNOWN_ERROR; 922 return p->pause(); 923} 924 925status_t MediaPlayerService::Client::isPlaying(bool* state) 926{ 927 *state = false; 928 sp<MediaPlayerBase> p = getPlayer(); 929 if (p == 0) return UNKNOWN_ERROR; 930 *state = p->isPlaying(); 931 LOGV("[%d] isPlaying: %d", mConnId, *state); 932 return NO_ERROR; 933} 934 935status_t MediaPlayerService::Client::getCurrentPosition(int *msec) 936{ 937 LOGV("getCurrentPosition"); 938 sp<MediaPlayerBase> p = getPlayer(); 939 if (p == 0) return UNKNOWN_ERROR; 940 status_t ret = p->getCurrentPosition(msec); 941 if (ret == NO_ERROR) { 942 LOGV("[%d] getCurrentPosition = %d", mConnId, *msec); 943 } else { 944 LOGE("getCurrentPosition returned %d", ret); 945 } 946 return ret; 947} 948 949status_t MediaPlayerService::Client::getDuration(int *msec) 950{ 951 LOGV("getDuration"); 952 sp<MediaPlayerBase> p = getPlayer(); 953 if (p == 0) return UNKNOWN_ERROR; 954 status_t ret = p->getDuration(msec); 955 if (ret == NO_ERROR) { 956 LOGV("[%d] getDuration = %d", mConnId, *msec); 957 } else { 958 LOGE("getDuration returned %d", ret); 959 } 960 return ret; 961} 962 963status_t MediaPlayerService::Client::seekTo(int msec) 964{ 965 LOGV("[%d] seekTo(%d)", mConnId, msec); 966 sp<MediaPlayerBase> p = getPlayer(); 967 if (p == 0) return UNKNOWN_ERROR; 968 return p->seekTo(msec); 969} 970 971status_t MediaPlayerService::Client::reset() 972{ 973 LOGV("[%d] reset", mConnId); 974 sp<MediaPlayerBase> p = getPlayer(); 975 if (p == 0) return UNKNOWN_ERROR; 976 return p->reset(); 977} 978 979status_t MediaPlayerService::Client::setAudioStreamType(int type) 980{ 981 LOGV("[%d] setAudioStreamType(%d)", mConnId, type); 982 // TODO: for hardware output, call player instead 983 Mutex::Autolock l(mLock); 984 if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type); 985 return NO_ERROR; 986} 987 988status_t MediaPlayerService::Client::setLooping(int loop) 989{ 990 LOGV("[%d] setLooping(%d)", mConnId, loop); 991 mLoop = loop; 992 sp<MediaPlayerBase> p = getPlayer(); 993 if (p != 0) return p->setLooping(loop); 994 return NO_ERROR; 995} 996 997status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume) 998{ 999 LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume); 1000 // TODO: for hardware output, call player instead 1001 Mutex::Autolock l(mLock); 1002 if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume); 1003 return NO_ERROR; 1004} 1005 1006 1007void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2) 1008{ 1009 Client* client = static_cast<Client*>(cookie); 1010 1011 if (MEDIA_INFO == msg && 1012 MEDIA_INFO_METADATA_UPDATE == ext1) { 1013 const media::Metadata::Type metadata_type = ext2; 1014 1015 if(client->shouldDropMetadata(metadata_type)) { 1016 return; 1017 } 1018 1019 // Update the list of metadata that have changed. getMetadata 1020 // also access mMetadataUpdated and clears it. 1021 client->addNewMetadataUpdate(metadata_type); 1022 } 1023 LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2); 1024 client->mClient->notify(msg, ext1, ext2); 1025} 1026 1027 1028bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const 1029{ 1030 Mutex::Autolock lock(mLock); 1031 1032 if (findMetadata(mMetadataDrop, code)) { 1033 return true; 1034 } 1035 1036 if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) { 1037 return false; 1038 } else { 1039 return true; 1040 } 1041} 1042 1043 1044void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) { 1045 Mutex::Autolock lock(mLock); 1046 if (mMetadataUpdated.indexOf(metadata_type) < 0) { 1047 mMetadataUpdated.add(metadata_type); 1048 } 1049} 1050 1051#if CALLBACK_ANTAGONIZER 1052const int Antagonizer::interval = 10000; // 10 msecs 1053 1054Antagonizer::Antagonizer(notify_callback_f cb, void* client) : 1055 mExit(false), mActive(false), mClient(client), mCb(cb) 1056{ 1057 createThread(callbackThread, this); 1058} 1059 1060void Antagonizer::kill() 1061{ 1062 Mutex::Autolock _l(mLock); 1063 mActive = false; 1064 mExit = true; 1065 mCondition.wait(mLock); 1066} 1067 1068int Antagonizer::callbackThread(void* user) 1069{ 1070 LOGD("Antagonizer started"); 1071 Antagonizer* p = reinterpret_cast<Antagonizer*>(user); 1072 while (!p->mExit) { 1073 if (p->mActive) { 1074 LOGV("send event"); 1075 p->mCb(p->mClient, 0, 0, 0); 1076 } 1077 usleep(interval); 1078 } 1079 Mutex::Autolock _l(p->mLock); 1080 p->mCondition.signal(); 1081 LOGD("Antagonizer stopped"); 1082 return 0; 1083} 1084#endif 1085 1086static size_t kDefaultHeapSize = 1024 * 1024; // 1MB 1087 1088sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1089{ 1090 LOGV("decode(%s)", url); 1091 sp<MemoryBase> mem; 1092 sp<MediaPlayerBase> player; 1093 1094 // Protect our precious, precious DRMd ringtones by only allowing 1095 // decoding of http, but not filesystem paths or content Uris. 1096 // If the application wants to decode those, it should open a 1097 // filedescriptor for them and use that. 1098 if (url != NULL && strncmp(url, "http://", 7) != 0) { 1099 LOGD("Can't decode %s by path, use filedescriptor instead", url); 1100 return mem; 1101 } 1102 1103 player_type playerType = getPlayerType(url); 1104 LOGV("player type = %d", playerType); 1105 1106 // create the right type of player 1107 sp<AudioCache> cache = new AudioCache(url); 1108 player = android::createPlayer(playerType, cache.get(), cache->notify); 1109 if (player == NULL) goto Exit; 1110 if (player->hardwareOutput()) goto Exit; 1111 1112 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1113 1114 // set data source 1115 if (player->setDataSource(url) != NO_ERROR) goto Exit; 1116 1117 LOGV("prepare"); 1118 player->prepareAsync(); 1119 1120 LOGV("wait for prepare"); 1121 if (cache->wait() != NO_ERROR) goto Exit; 1122 1123 LOGV("start"); 1124 player->start(); 1125 1126 LOGV("wait for playback complete"); 1127 if (cache->wait() != NO_ERROR) goto Exit; 1128 1129 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1130 *pSampleRate = cache->sampleRate(); 1131 *pNumChannels = cache->channelCount(); 1132 *pFormat = cache->format(); 1133 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1134 1135Exit: 1136 if (player != 0) player->reset(); 1137 return mem; 1138} 1139 1140sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1141{ 1142 LOGV("decode(%d, %lld, %lld)", fd, offset, length); 1143 sp<MemoryBase> mem; 1144 sp<MediaPlayerBase> player; 1145 1146 player_type playerType = getPlayerType(fd, offset, length); 1147 LOGV("player type = %d", playerType); 1148 1149 // create the right type of player 1150 sp<AudioCache> cache = new AudioCache("decode_fd"); 1151 player = android::createPlayer(playerType, cache.get(), cache->notify); 1152 if (player == NULL) goto Exit; 1153 if (player->hardwareOutput()) goto Exit; 1154 1155 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1156 1157 // set data source 1158 if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit; 1159 1160 LOGV("prepare"); 1161 player->prepareAsync(); 1162 1163 LOGV("wait for prepare"); 1164 if (cache->wait() != NO_ERROR) goto Exit; 1165 1166 LOGV("start"); 1167 player->start(); 1168 1169 LOGV("wait for playback complete"); 1170 if (cache->wait() != NO_ERROR) goto Exit; 1171 1172 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1173 *pSampleRate = cache->sampleRate(); 1174 *pNumChannels = cache->channelCount(); 1175 *pFormat = cache->format(); 1176 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1177 1178Exit: 1179 if (player != 0) player->reset(); 1180 ::close(fd); 1181 return mem; 1182} 1183 1184#undef LOG_TAG 1185#define LOG_TAG "AudioSink" 1186MediaPlayerService::AudioOutput::AudioOutput() 1187 : mCallback(NULL), 1188 mCallbackCookie(NULL) { 1189 mTrack = 0; 1190 mStreamType = AudioSystem::MUSIC; 1191 mLeftVolume = 1.0; 1192 mRightVolume = 1.0; 1193 mLatency = 0; 1194 mMsecsPerFrame = 0; 1195 setMinBufferCount(); 1196} 1197 1198MediaPlayerService::AudioOutput::~AudioOutput() 1199{ 1200 close(); 1201} 1202 1203void MediaPlayerService::AudioOutput::setMinBufferCount() 1204{ 1205 char value[PROPERTY_VALUE_MAX]; 1206 if (property_get("ro.kernel.qemu", value, 0)) { 1207 mIsOnEmulator = true; 1208 mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator 1209 } 1210} 1211 1212bool MediaPlayerService::AudioOutput::isOnEmulator() 1213{ 1214 setMinBufferCount(); 1215 return mIsOnEmulator; 1216} 1217 1218int MediaPlayerService::AudioOutput::getMinBufferCount() 1219{ 1220 setMinBufferCount(); 1221 return mMinBufferCount; 1222} 1223 1224ssize_t MediaPlayerService::AudioOutput::bufferSize() const 1225{ 1226 if (mTrack == 0) return NO_INIT; 1227 return mTrack->frameCount() * frameSize(); 1228} 1229 1230ssize_t MediaPlayerService::AudioOutput::frameCount() const 1231{ 1232 if (mTrack == 0) return NO_INIT; 1233 return mTrack->frameCount(); 1234} 1235 1236ssize_t MediaPlayerService::AudioOutput::channelCount() const 1237{ 1238 if (mTrack == 0) return NO_INIT; 1239 return mTrack->channelCount(); 1240} 1241 1242ssize_t MediaPlayerService::AudioOutput::frameSize() const 1243{ 1244 if (mTrack == 0) return NO_INIT; 1245 return mTrack->frameSize(); 1246} 1247 1248uint32_t MediaPlayerService::AudioOutput::latency () const 1249{ 1250 return mLatency; 1251} 1252 1253float MediaPlayerService::AudioOutput::msecsPerFrame() const 1254{ 1255 return mMsecsPerFrame; 1256} 1257 1258status_t MediaPlayerService::AudioOutput::open( 1259 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1260 AudioCallback cb, void *cookie) 1261{ 1262 mCallback = cb; 1263 mCallbackCookie = cookie; 1264 1265 // Check argument "bufferCount" against the mininum buffer count 1266 if (bufferCount < mMinBufferCount) { 1267 LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount); 1268 bufferCount = mMinBufferCount; 1269 1270 } 1271 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1272 if (mTrack) close(); 1273 int afSampleRate; 1274 int afFrameCount; 1275 int frameCount; 1276 1277 if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) { 1278 return NO_INIT; 1279 } 1280 if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) { 1281 return NO_INIT; 1282 } 1283 1284 frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate; 1285 1286 AudioTrack *t; 1287 if (mCallback != NULL) { 1288 t = new AudioTrack( 1289 mStreamType, 1290 sampleRate, 1291 format, 1292 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1293 frameCount, 1294 0 /* flags */, 1295 CallbackWrapper, 1296 this); 1297 } else { 1298 t = new AudioTrack( 1299 mStreamType, 1300 sampleRate, 1301 format, 1302 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1303 frameCount); 1304 } 1305 1306 if ((t == 0) || (t->initCheck() != NO_ERROR)) { 1307 LOGE("Unable to create audio track"); 1308 delete t; 1309 return NO_INIT; 1310 } 1311 1312 LOGV("setVolume"); 1313 t->setVolume(mLeftVolume, mRightVolume); 1314 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1315 mLatency = t->latency() + kAudioVideoDelayMs; 1316 mTrack = t; 1317 return NO_ERROR; 1318} 1319 1320void MediaPlayerService::AudioOutput::start() 1321{ 1322 LOGV("start"); 1323 if (mTrack) { 1324 mTrack->setVolume(mLeftVolume, mRightVolume); 1325 mTrack->start(); 1326 } 1327} 1328 1329ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size) 1330{ 1331 LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback."); 1332 1333 //LOGV("write(%p, %u)", buffer, size); 1334 if (mTrack) return mTrack->write(buffer, size); 1335 return NO_INIT; 1336} 1337 1338void MediaPlayerService::AudioOutput::stop() 1339{ 1340 LOGV("stop"); 1341 if (mTrack) mTrack->stop(); 1342} 1343 1344void MediaPlayerService::AudioOutput::flush() 1345{ 1346 LOGV("flush"); 1347 if (mTrack) mTrack->flush(); 1348} 1349 1350void MediaPlayerService::AudioOutput::pause() 1351{ 1352 LOGV("pause"); 1353 if (mTrack) mTrack->pause(); 1354} 1355 1356void MediaPlayerService::AudioOutput::close() 1357{ 1358 LOGV("close"); 1359 delete mTrack; 1360 mTrack = 0; 1361} 1362 1363void MediaPlayerService::AudioOutput::setVolume(float left, float right) 1364{ 1365 LOGV("setVolume(%f, %f)", left, right); 1366 mLeftVolume = left; 1367 mRightVolume = right; 1368 if (mTrack) { 1369 mTrack->setVolume(left, right); 1370 } 1371} 1372 1373// static 1374void MediaPlayerService::AudioOutput::CallbackWrapper( 1375 int event, void *cookie, void *info) { 1376 if (event != AudioTrack::EVENT_MORE_DATA) { 1377 return; 1378 } 1379 1380 AudioOutput *me = (AudioOutput *)cookie; 1381 AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; 1382 1383 (*me->mCallback)( 1384 me, buffer->raw, buffer->size, me->mCallbackCookie); 1385} 1386 1387#undef LOG_TAG 1388#define LOG_TAG "AudioCache" 1389MediaPlayerService::AudioCache::AudioCache(const char* name) : 1390 mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0), 1391 mError(NO_ERROR), mCommandComplete(false) 1392{ 1393 // create ashmem heap 1394 mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name); 1395} 1396 1397uint32_t MediaPlayerService::AudioCache::latency () const 1398{ 1399 return 0; 1400} 1401 1402float MediaPlayerService::AudioCache::msecsPerFrame() const 1403{ 1404 return mMsecsPerFrame; 1405} 1406 1407status_t MediaPlayerService::AudioCache::open( 1408 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1409 AudioCallback cb, void *cookie) 1410{ 1411 if (cb != NULL) { 1412 return UNKNOWN_ERROR; // TODO: implement this. 1413 } 1414 1415 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1416 if (mHeap->getHeapID() < 0) return NO_INIT; 1417 mSampleRate = sampleRate; 1418 mChannelCount = (uint16_t)channelCount; 1419 mFormat = (uint16_t)format; 1420 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1421 return NO_ERROR; 1422} 1423 1424ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size) 1425{ 1426 LOGV("write(%p, %u)", buffer, size); 1427 if ((buffer == 0) || (size == 0)) return size; 1428 1429 uint8_t* p = static_cast<uint8_t*>(mHeap->getBase()); 1430 if (p == NULL) return NO_INIT; 1431 p += mSize; 1432 LOGV("memcpy(%p, %p, %u)", p, buffer, size); 1433 if (mSize + size > mHeap->getSize()) { 1434 LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize()); 1435 size = mHeap->getSize() - mSize; 1436 } 1437 memcpy(p, buffer, size); 1438 mSize += size; 1439 return size; 1440} 1441 1442// call with lock held 1443status_t MediaPlayerService::AudioCache::wait() 1444{ 1445 Mutex::Autolock lock(mLock); 1446 if (!mCommandComplete) { 1447 mSignal.wait(mLock); 1448 } 1449 mCommandComplete = false; 1450 1451 if (mError == NO_ERROR) { 1452 LOGV("wait - success"); 1453 } else { 1454 LOGV("wait - error"); 1455 } 1456 return mError; 1457} 1458 1459void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2) 1460{ 1461 LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2); 1462 AudioCache* p = static_cast<AudioCache*>(cookie); 1463 1464 // ignore buffering messages 1465 if (msg == MEDIA_BUFFERING_UPDATE) return; 1466 1467 // set error condition 1468 if (msg == MEDIA_ERROR) { 1469 LOGE("Error %d, %d occurred", ext1, ext2); 1470 p->mError = ext1; 1471 } 1472 1473 // wake up thread 1474 LOGV("wakeup thread"); 1475 p->mCommandComplete = true; 1476 p->mSignal.signal(); 1477} 1478 1479} // namespace android 1480