MediaPlayerService.cpp revision 10dbb8e97e7a81ca4867663b5517f048820b3094
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/SystemClock.h> 45#include <utils/Vector.h> 46#include <cutils/properties.h> 47 48#include <media/MediaPlayerInterface.h> 49#include <media/mediarecorder.h> 50#include <media/MediaMetadataRetrieverInterface.h> 51#include <media/Metadata.h> 52#include <media/AudioTrack.h> 53 54#include "MediaRecorderClient.h" 55#include "MediaPlayerService.h" 56#include "MetadataRetrieverClient.h" 57 58#include "MidiFile.h" 59#include "VorbisPlayer.h" 60#include <media/PVPlayer.h> 61#include "TestPlayerStub.h" 62#include "StagefrightPlayer.h" 63 64#include <OMX.h> 65 66/* desktop Linux needs a little help with gettid() */ 67#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS) 68#define __KERNEL__ 69# include <linux/unistd.h> 70#ifdef _syscall0 71_syscall0(pid_t,gettid) 72#else 73pid_t gettid() { return syscall(__NR_gettid);} 74#endif 75#undef __KERNEL__ 76#endif 77 78namespace { 79using android::media::Metadata; 80using android::status_t; 81using android::OK; 82using android::BAD_VALUE; 83using android::NOT_ENOUGH_DATA; 84using android::Parcel; 85 86// Max number of entries in the filter. 87const int kMaxFilterSize = 64; // I pulled that out of thin air. 88 89// FIXME: Move all the metadata related function in the Metadata.cpp 90 91 92// Unmarshall a filter from a Parcel. 93// Filter format in a parcel: 94// 95// 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 96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 97// | number of entries (n) | 98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 99// | metadata type 1 | 100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 101// | metadata type 2 | 102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 103// .... 104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 105// | metadata type n | 106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 107// 108// @param p Parcel that should start with a filter. 109// @param[out] filter On exit contains the list of metadata type to be 110// filtered. 111// @param[out] status On exit contains the status code to be returned. 112// @return true if the parcel starts with a valid filter. 113bool unmarshallFilter(const Parcel& p, 114 Metadata::Filter *filter, 115 status_t *status) 116{ 117 int32_t val; 118 if (p.readInt32(&val) != OK) 119 { 120 LOGE("Failed to read filter's length"); 121 *status = NOT_ENOUGH_DATA; 122 return false; 123 } 124 125 if( val > kMaxFilterSize || val < 0) 126 { 127 LOGE("Invalid filter len %d", val); 128 *status = BAD_VALUE; 129 return false; 130 } 131 132 const size_t num = val; 133 134 filter->clear(); 135 filter->setCapacity(num); 136 137 size_t size = num * sizeof(Metadata::Type); 138 139 140 if (p.dataAvail() < size) 141 { 142 LOGE("Filter too short expected %d but got %d", size, p.dataAvail()); 143 *status = NOT_ENOUGH_DATA; 144 return false; 145 } 146 147 const Metadata::Type *data = 148 static_cast<const Metadata::Type*>(p.readInplace(size)); 149 150 if (NULL == data) 151 { 152 LOGE("Filter had no data"); 153 *status = BAD_VALUE; 154 return false; 155 } 156 157 // TODO: The stl impl of vector would be more efficient here 158 // because it degenerates into a memcpy on pod types. Try to 159 // replace later or use stl::set. 160 for (size_t i = 0; i < num; ++i) 161 { 162 filter->add(*data); 163 ++data; 164 } 165 *status = OK; 166 return true; 167} 168 169// @param filter Of metadata type. 170// @param val To be searched. 171// @return true if a match was found. 172bool findMetadata(const Metadata::Filter& filter, const int32_t val) 173{ 174 // Deal with empty and ANY right away 175 if (filter.isEmpty()) return false; 176 if (filter[0] == Metadata::kAny) return true; 177 178 return filter.indexOf(val) >= 0; 179} 180 181} // anonymous namespace 182 183 184namespace android { 185 186// TODO: Temp hack until we can register players 187typedef struct { 188 const char *extension; 189 const player_type playertype; 190} extmap; 191extmap FILE_EXTS [] = { 192 {".mid", SONIVOX_PLAYER}, 193 {".midi", SONIVOX_PLAYER}, 194 {".smf", SONIVOX_PLAYER}, 195 {".xmf", SONIVOX_PLAYER}, 196 {".imy", SONIVOX_PLAYER}, 197 {".rtttl", SONIVOX_PLAYER}, 198 {".rtx", SONIVOX_PLAYER}, 199 {".ota", SONIVOX_PLAYER}, 200 {".ogg", VORBIS_PLAYER}, 201 {".oga", VORBIS_PLAYER}, 202}; 203 204// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround 205/* static */ const uint32_t MediaPlayerService::AudioOutput::kAudioVideoDelayMs = 0; 206/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4; 207/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false; 208 209void MediaPlayerService::instantiate() { 210 defaultServiceManager()->addService( 211 String16("media.player"), new MediaPlayerService()); 212} 213 214MediaPlayerService::MediaPlayerService() 215{ 216 LOGV("MediaPlayerService created"); 217 mNextConnId = 1; 218} 219 220MediaPlayerService::~MediaPlayerService() 221{ 222 LOGV("MediaPlayerService destroyed"); 223} 224 225sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid) 226{ 227#ifndef NO_OPENCORE 228 sp<MediaRecorderClient> recorder = new MediaRecorderClient(pid); 229#else 230 sp<MediaRecorderClient> recorder = NULL; 231#endif 232 LOGV("Create new media recorder client from pid %d", pid); 233 return recorder; 234} 235 236sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid) 237{ 238 sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid); 239 LOGV("Create new media retriever from pid %d", pid); 240 return retriever; 241} 242 243sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url) 244{ 245 int32_t connId = android_atomic_inc(&mNextConnId); 246 sp<Client> c = new Client(this, pid, connId, client); 247 LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId); 248 if (NO_ERROR != c->setDataSource(url)) 249 { 250 c.clear(); 251 return c; 252 } 253 wp<Client> w = c; 254 Mutex::Autolock lock(mLock); 255 mClients.add(w); 256 return c; 257} 258 259sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, 260 int fd, int64_t offset, int64_t length) 261{ 262 int32_t connId = android_atomic_inc(&mNextConnId); 263 sp<Client> c = new Client(this, pid, connId, client); 264 LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld", 265 connId, pid, fd, offset, length); 266 if (NO_ERROR != c->setDataSource(fd, offset, length)) { 267 c.clear(); 268 } else { 269 wp<Client> w = c; 270 Mutex::Autolock lock(mLock); 271 mClients.add(w); 272 } 273 ::close(fd); 274 return c; 275} 276 277sp<IOMX> MediaPlayerService::createOMX() { 278 return new OMX; 279} 280 281status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const 282{ 283 const size_t SIZE = 256; 284 char buffer[SIZE]; 285 String8 result; 286 287 result.append(" AudioCache\n"); 288 if (mHeap != 0) { 289 snprintf(buffer, 255, " heap base(%p), size(%d), flags(%d), device(%s)\n", 290 mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice()); 291 result.append(buffer); 292 } 293 snprintf(buffer, 255, " msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n", 294 mMsecsPerFrame, mChannelCount, mFormat, mFrameCount); 295 result.append(buffer); 296 snprintf(buffer, 255, " sample rate(%d), size(%d), error(%d), command complete(%s)\n", 297 mSampleRate, mSize, mError, mCommandComplete?"true":"false"); 298 result.append(buffer); 299 ::write(fd, result.string(), result.size()); 300 return NO_ERROR; 301} 302 303status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const 304{ 305 const size_t SIZE = 256; 306 char buffer[SIZE]; 307 String8 result; 308 309 result.append(" AudioOutput\n"); 310 snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n", 311 mStreamType, mLeftVolume, mRightVolume); 312 result.append(buffer); 313 snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n", 314 mMsecsPerFrame, mLatency); 315 result.append(buffer); 316 ::write(fd, result.string(), result.size()); 317 if (mTrack != 0) { 318 mTrack->dump(fd, args); 319 } 320 return NO_ERROR; 321} 322 323status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const 324{ 325 const size_t SIZE = 256; 326 char buffer[SIZE]; 327 String8 result; 328 result.append(" Client\n"); 329 snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n", 330 mPid, mConnId, mStatus, mLoop?"true": "false"); 331 result.append(buffer); 332 write(fd, result.string(), result.size()); 333 if (mAudioOutput != 0) { 334 mAudioOutput->dump(fd, args); 335 } 336 write(fd, "\n", 1); 337 return NO_ERROR; 338} 339 340static int myTid() { 341#ifdef HAVE_GETTID 342 return gettid(); 343#else 344 return getpid(); 345#endif 346} 347 348#if defined(__arm__) 349extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, 350 size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); 351extern "C" void free_malloc_leak_info(uint8_t* info); 352 353void memStatus(int fd, const Vector<String16>& args) 354{ 355 const size_t SIZE = 256; 356 char buffer[SIZE]; 357 String8 result; 358 359 typedef struct { 360 size_t size; 361 size_t dups; 362 intptr_t * backtrace; 363 } AllocEntry; 364 365 uint8_t *info = NULL; 366 size_t overallSize = 0; 367 size_t infoSize = 0; 368 size_t totalMemory = 0; 369 size_t backtraceSize = 0; 370 371 get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize); 372 if (info) { 373 uint8_t *ptr = info; 374 size_t count = overallSize / infoSize; 375 376 snprintf(buffer, SIZE, " Allocation count %i\n", count); 377 result.append(buffer); 378 379 AllocEntry * entries = new AllocEntry[count]; 380 381 for (size_t i = 0; i < count; i++) { 382 // Each entry should be size_t, size_t, intptr_t[backtraceSize] 383 AllocEntry *e = &entries[i]; 384 385 e->size = *reinterpret_cast<size_t *>(ptr); 386 ptr += sizeof(size_t); 387 388 e->dups = *reinterpret_cast<size_t *>(ptr); 389 ptr += sizeof(size_t); 390 391 e->backtrace = reinterpret_cast<intptr_t *>(ptr); 392 ptr += sizeof(intptr_t) * backtraceSize; 393 } 394 395 // Now we need to sort the entries. They come sorted by size but 396 // not by stack trace which causes problems using diff. 397 bool moved; 398 do { 399 moved = false; 400 for (size_t i = 0; i < (count - 1); i++) { 401 AllocEntry *e1 = &entries[i]; 402 AllocEntry *e2 = &entries[i+1]; 403 404 bool swap = e1->size < e2->size; 405 if (e1->size == e2->size) { 406 for(size_t j = 0; j < backtraceSize; j++) { 407 if (e1->backtrace[j] == e2->backtrace[j]) { 408 continue; 409 } 410 swap = e1->backtrace[j] < e2->backtrace[j]; 411 break; 412 } 413 } 414 if (swap) { 415 AllocEntry t = entries[i]; 416 entries[i] = entries[i+1]; 417 entries[i+1] = t; 418 moved = true; 419 } 420 } 421 } while (moved); 422 423 for (size_t i = 0; i < count; i++) { 424 AllocEntry *e = &entries[i]; 425 426 snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups); 427 result.append(buffer); 428 for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) { 429 if (ct) { 430 result.append(", "); 431 } 432 snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]); 433 result.append(buffer); 434 } 435 result.append("\n"); 436 } 437 438 delete[] entries; 439 free_malloc_leak_info(info); 440 } 441 442 write(fd, result.string(), result.size()); 443} 444#endif 445 446status_t MediaPlayerService::dump(int fd, const Vector<String16>& args) 447{ 448 const size_t SIZE = 256; 449 char buffer[SIZE]; 450 String8 result; 451 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 452 snprintf(buffer, SIZE, "Permission Denial: " 453 "can't dump MediaPlayerService from pid=%d, uid=%d\n", 454 IPCThreadState::self()->getCallingPid(), 455 IPCThreadState::self()->getCallingUid()); 456 result.append(buffer); 457 } else { 458 Mutex::Autolock lock(mLock); 459 for (int i = 0, n = mClients.size(); i < n; ++i) { 460 sp<Client> c = mClients[i].promote(); 461 if (c != 0) c->dump(fd, args); 462 } 463 result.append(" Files opened and/or mapped:\n"); 464 snprintf(buffer, SIZE, "/proc/%d/maps", myTid()); 465 FILE *f = fopen(buffer, "r"); 466 if (f) { 467 while (!feof(f)) { 468 fgets(buffer, SIZE, f); 469 if (strstr(buffer, " /sdcard/") || 470 strstr(buffer, " /system/sounds/") || 471 strstr(buffer, " /system/media/")) { 472 result.append(" "); 473 result.append(buffer); 474 } 475 } 476 fclose(f); 477 } else { 478 result.append("couldn't open "); 479 result.append(buffer); 480 result.append("\n"); 481 } 482 483 snprintf(buffer, SIZE, "/proc/%d/fd", myTid()); 484 DIR *d = opendir(buffer); 485 if (d) { 486 struct dirent *ent; 487 while((ent = readdir(d)) != NULL) { 488 if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) { 489 snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name); 490 struct stat s; 491 if (lstat(buffer, &s) == 0) { 492 if ((s.st_mode & S_IFMT) == S_IFLNK) { 493 char linkto[256]; 494 int len = readlink(buffer, linkto, sizeof(linkto)); 495 if(len > 0) { 496 if(len > 255) { 497 linkto[252] = '.'; 498 linkto[253] = '.'; 499 linkto[254] = '.'; 500 linkto[255] = 0; 501 } else { 502 linkto[len] = 0; 503 } 504 if (strstr(linkto, "/sdcard/") == linkto || 505 strstr(linkto, "/system/sounds/") == linkto || 506 strstr(linkto, "/system/media/") == linkto) { 507 result.append(" "); 508 result.append(buffer); 509 result.append(" -> "); 510 result.append(linkto); 511 result.append("\n"); 512 } 513 } 514 } else { 515 result.append(" unexpected type for "); 516 result.append(buffer); 517 result.append("\n"); 518 } 519 } 520 } 521 } 522 closedir(d); 523 } else { 524 result.append("couldn't open "); 525 result.append(buffer); 526 result.append("\n"); 527 } 528 529#if defined(__arm__) 530 bool dumpMem = false; 531 for (size_t i = 0; i < args.size(); i++) { 532 if (args[i] == String16("-m")) { 533 dumpMem = true; 534 } 535 } 536 if (dumpMem) { 537 memStatus(fd, args); 538 } 539#endif 540 } 541 write(fd, result.string(), result.size()); 542 return NO_ERROR; 543} 544 545void MediaPlayerService::removeClient(wp<Client> client) 546{ 547 Mutex::Autolock lock(mLock); 548 mClients.remove(client); 549} 550 551MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid, 552 int32_t connId, const sp<IMediaPlayerClient>& client) 553{ 554 LOGV("Client(%d) constructor", connId); 555 mPid = pid; 556 mConnId = connId; 557 mService = service; 558 mClient = client; 559 mLoop = false; 560 mStatus = NO_INIT; 561#if CALLBACK_ANTAGONIZER 562 LOGD("create Antagonizer"); 563 mAntagonizer = new Antagonizer(notify, this); 564#endif 565} 566 567MediaPlayerService::Client::~Client() 568{ 569 LOGV("Client(%d) destructor pid = %d", mConnId, mPid); 570 mAudioOutput.clear(); 571 wp<Client> client(this); 572 disconnect(); 573 mService->removeClient(client); 574} 575 576void MediaPlayerService::Client::disconnect() 577{ 578 LOGV("disconnect(%d) from pid %d", mConnId, mPid); 579 // grab local reference and clear main reference to prevent future 580 // access to object 581 sp<MediaPlayerBase> p; 582 { 583 Mutex::Autolock l(mLock); 584 p = mPlayer; 585 } 586 mClient.clear(); 587 588 mPlayer.clear(); 589 590 // clear the notification to prevent callbacks to dead client 591 // and reset the player. We assume the player will serialize 592 // access to itself if necessary. 593 if (p != 0) { 594 p->setNotifyCallback(0, 0); 595#if CALLBACK_ANTAGONIZER 596 LOGD("kill Antagonizer"); 597 mAntagonizer->kill(); 598#endif 599 p->reset(); 600 } 601 602 IPCThreadState::self()->flushCommands(); 603} 604 605static player_type getDefaultPlayerType() { 606#if BUILD_WITH_FULL_STAGEFRIGHT 607 char value[PROPERTY_VALUE_MAX]; 608 if (property_get("media.stagefright.enable-player", value, NULL) 609 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 610 return STAGEFRIGHT_PLAYER; 611 } 612#endif 613 614 return PV_PLAYER; 615} 616 617player_type getPlayerType(int fd, int64_t offset, int64_t length) 618{ 619 char buf[20]; 620 lseek(fd, offset, SEEK_SET); 621 read(fd, buf, sizeof(buf)); 622 lseek(fd, offset, SEEK_SET); 623 624 long ident = *((long*)buf); 625 626 // Ogg vorbis? 627 if (ident == 0x5367674f) // 'OggS' 628 return VORBIS_PLAYER; 629 630 // Some kind of MIDI? 631 EAS_DATA_HANDLE easdata; 632 if (EAS_Init(&easdata) == EAS_SUCCESS) { 633 EAS_FILE locator; 634 locator.path = NULL; 635 locator.fd = fd; 636 locator.offset = offset; 637 locator.length = length; 638 EAS_HANDLE eashandle; 639 if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) { 640 EAS_CloseFile(easdata, eashandle); 641 EAS_Shutdown(easdata); 642 return SONIVOX_PLAYER; 643 } 644 EAS_Shutdown(easdata); 645 } 646 647 return getDefaultPlayerType(); 648} 649 650player_type getPlayerType(const char* url) 651{ 652 if (TestPlayerStub::canBeUsed(url)) { 653 return TEST_PLAYER; 654 } 655 656 // use MidiFile for MIDI extensions 657 int lenURL = strlen(url); 658 for (int i = 0; i < NELEM(FILE_EXTS); ++i) { 659 int len = strlen(FILE_EXTS[i].extension); 660 int start = lenURL - len; 661 if (start > 0) { 662 if (!strncmp(url + start, FILE_EXTS[i].extension, len)) { 663 return FILE_EXTS[i].playertype; 664 } 665 } 666 } 667 668 return getDefaultPlayerType(); 669} 670 671static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie, 672 notify_callback_f notifyFunc) 673{ 674 sp<MediaPlayerBase> p; 675 switch (playerType) { 676#ifndef NO_OPENCORE 677 case PV_PLAYER: 678 LOGV(" create PVPlayer"); 679 p = new PVPlayer(); 680 break; 681#endif 682 case SONIVOX_PLAYER: 683 LOGV(" create MidiFile"); 684 p = new MidiFile(); 685 break; 686 case VORBIS_PLAYER: 687 LOGV(" create VorbisPlayer"); 688 p = new VorbisPlayer(); 689 break; 690#if BUILD_WITH_FULL_STAGEFRIGHT 691 case STAGEFRIGHT_PLAYER: 692 LOGV(" create StagefrightPlayer"); 693 p = new StagefrightPlayer; 694 break; 695#endif 696 case TEST_PLAYER: 697 LOGV("Create Test Player stub"); 698 p = new TestPlayerStub(); 699 break; 700 } 701 if (p != NULL) { 702 if (p->initCheck() == NO_ERROR) { 703 p->setNotifyCallback(cookie, notifyFunc); 704 } else { 705 p.clear(); 706 } 707 } 708 if (p == NULL) { 709 LOGE("Failed to create player object"); 710 } 711 return p; 712} 713 714sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType) 715{ 716 // determine if we have the right player type 717 sp<MediaPlayerBase> p = mPlayer; 718 if ((p != NULL) && (p->playerType() != playerType)) { 719 LOGV("delete player"); 720 p.clear(); 721 } 722 if (p == NULL) { 723 p = android::createPlayer(playerType, this, notify); 724 } 725 return p; 726} 727 728status_t MediaPlayerService::Client::setDataSource(const char *url) 729{ 730 LOGV("setDataSource(%s)", url); 731 if (url == NULL) 732 return UNKNOWN_ERROR; 733 734 if (strncmp(url, "content://", 10) == 0) { 735 // get a filedescriptor for the content Uri and 736 // pass it to the setDataSource(fd) method 737 738 String16 url16(url); 739 int fd = android::openContentProviderFile(url16); 740 if (fd < 0) 741 { 742 LOGE("Couldn't open fd for %s", url); 743 return UNKNOWN_ERROR; 744 } 745 setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus 746 close(fd); 747 return mStatus; 748 } else { 749 player_type playerType = getPlayerType(url); 750 LOGV("player type = %d", playerType); 751 752 // create the right type of player 753 sp<MediaPlayerBase> p = createPlayer(playerType); 754 if (p == NULL) return NO_INIT; 755 756 if (!p->hardwareOutput()) { 757 mAudioOutput = new AudioOutput(); 758 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 759 } 760 761 // now set data source 762 LOGV(" setDataSource"); 763 mStatus = p->setDataSource(url); 764 if (mStatus == NO_ERROR) { 765 mPlayer = p; 766 } else { 767 LOGE(" error: %d", mStatus); 768 } 769 return mStatus; 770 } 771} 772 773status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length) 774{ 775 LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 776 struct stat sb; 777 int ret = fstat(fd, &sb); 778 if (ret != 0) { 779 LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 780 return UNKNOWN_ERROR; 781 } 782 783 LOGV("st_dev = %llu", sb.st_dev); 784 LOGV("st_mode = %u", sb.st_mode); 785 LOGV("st_uid = %lu", sb.st_uid); 786 LOGV("st_gid = %lu", sb.st_gid); 787 LOGV("st_size = %llu", sb.st_size); 788 789 if (offset >= sb.st_size) { 790 LOGE("offset error"); 791 ::close(fd); 792 return UNKNOWN_ERROR; 793 } 794 if (offset + length > sb.st_size) { 795 length = sb.st_size - offset; 796 LOGV("calculated length = %lld", length); 797 } 798 799 player_type playerType = getPlayerType(fd, offset, length); 800 LOGV("player type = %d", playerType); 801 802 // create the right type of player 803 sp<MediaPlayerBase> p = createPlayer(playerType); 804 if (p == NULL) return NO_INIT; 805 806 if (!p->hardwareOutput()) { 807 mAudioOutput = new AudioOutput(); 808 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 809 } 810 811 // now set data source 812 mStatus = p->setDataSource(fd, offset, length); 813 if (mStatus == NO_ERROR) mPlayer = p; 814 return mStatus; 815} 816 817status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface) 818{ 819 LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get()); 820 sp<MediaPlayerBase> p = getPlayer(); 821 if (p == 0) return UNKNOWN_ERROR; 822 return p->setVideoSurface(surface); 823} 824 825status_t MediaPlayerService::Client::invoke(const Parcel& request, 826 Parcel *reply) 827{ 828 sp<MediaPlayerBase> p = getPlayer(); 829 if (p == NULL) return UNKNOWN_ERROR; 830 return p->invoke(request, reply); 831} 832 833// This call doesn't need to access the native player. 834status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter) 835{ 836 status_t status; 837 media::Metadata::Filter allow, drop; 838 839 if (unmarshallFilter(filter, &allow, &status) && 840 unmarshallFilter(filter, &drop, &status)) { 841 Mutex::Autolock lock(mLock); 842 843 mMetadataAllow = allow; 844 mMetadataDrop = drop; 845 } 846 return status; 847} 848 849status_t MediaPlayerService::Client::getMetadata( 850 bool update_only, bool apply_filter, Parcel *reply) 851{ 852 sp<MediaPlayerBase> player = getPlayer(); 853 if (player == 0) return UNKNOWN_ERROR; 854 855 status_t status; 856 // Placeholder for the return code, updated by the caller. 857 reply->writeInt32(-1); 858 859 media::Metadata::Filter ids; 860 861 // We don't block notifications while we fetch the data. We clear 862 // mMetadataUpdated first so we don't lose notifications happening 863 // during the rest of this call. 864 { 865 Mutex::Autolock lock(mLock); 866 if (update_only) { 867 ids = mMetadataUpdated; 868 } 869 mMetadataUpdated.clear(); 870 } 871 872 media::Metadata metadata(reply); 873 874 metadata.appendHeader(); 875 status = player->getMetadata(ids, reply); 876 877 if (status != OK) { 878 metadata.resetParcel(); 879 LOGE("getMetadata failed %d", status); 880 return status; 881 } 882 883 // FIXME: Implement filtering on the result. Not critical since 884 // filtering takes place on the update notifications already. This 885 // would be when all the metadata are fetch and a filter is set. 886 887 // Everything is fine, update the metadata length. 888 metadata.updateLength(); 889 return OK; 890} 891 892status_t MediaPlayerService::Client::prepareAsync() 893{ 894 LOGV("[%d] prepareAsync", mConnId); 895 sp<MediaPlayerBase> p = getPlayer(); 896 if (p == 0) return UNKNOWN_ERROR; 897 status_t ret = p->prepareAsync(); 898#if CALLBACK_ANTAGONIZER 899 LOGD("start Antagonizer"); 900 if (ret == NO_ERROR) mAntagonizer->start(); 901#endif 902 return ret; 903} 904 905status_t MediaPlayerService::Client::start() 906{ 907 LOGV("[%d] start", mConnId); 908 sp<MediaPlayerBase> p = getPlayer(); 909 if (p == 0) return UNKNOWN_ERROR; 910 p->setLooping(mLoop); 911 return p->start(); 912} 913 914status_t MediaPlayerService::Client::stop() 915{ 916 LOGV("[%d] stop", mConnId); 917 sp<MediaPlayerBase> p = getPlayer(); 918 if (p == 0) return UNKNOWN_ERROR; 919 return p->stop(); 920} 921 922status_t MediaPlayerService::Client::pause() 923{ 924 LOGV("[%d] pause", mConnId); 925 sp<MediaPlayerBase> p = getPlayer(); 926 if (p == 0) return UNKNOWN_ERROR; 927 return p->pause(); 928} 929 930status_t MediaPlayerService::Client::isPlaying(bool* state) 931{ 932 *state = false; 933 sp<MediaPlayerBase> p = getPlayer(); 934 if (p == 0) return UNKNOWN_ERROR; 935 *state = p->isPlaying(); 936 LOGV("[%d] isPlaying: %d", mConnId, *state); 937 return NO_ERROR; 938} 939 940status_t MediaPlayerService::Client::getCurrentPosition(int *msec) 941{ 942 LOGV("getCurrentPosition"); 943 sp<MediaPlayerBase> p = getPlayer(); 944 if (p == 0) return UNKNOWN_ERROR; 945 status_t ret = p->getCurrentPosition(msec); 946 if (ret == NO_ERROR) { 947 LOGV("[%d] getCurrentPosition = %d", mConnId, *msec); 948 } else { 949 LOGE("getCurrentPosition returned %d", ret); 950 } 951 return ret; 952} 953 954status_t MediaPlayerService::Client::getDuration(int *msec) 955{ 956 LOGV("getDuration"); 957 sp<MediaPlayerBase> p = getPlayer(); 958 if (p == 0) return UNKNOWN_ERROR; 959 status_t ret = p->getDuration(msec); 960 if (ret == NO_ERROR) { 961 LOGV("[%d] getDuration = %d", mConnId, *msec); 962 } else { 963 LOGE("getDuration returned %d", ret); 964 } 965 return ret; 966} 967 968status_t MediaPlayerService::Client::seekTo(int msec) 969{ 970 LOGV("[%d] seekTo(%d)", mConnId, msec); 971 sp<MediaPlayerBase> p = getPlayer(); 972 if (p == 0) return UNKNOWN_ERROR; 973 return p->seekTo(msec); 974} 975 976status_t MediaPlayerService::Client::reset() 977{ 978 LOGV("[%d] reset", mConnId); 979 sp<MediaPlayerBase> p = getPlayer(); 980 if (p == 0) return UNKNOWN_ERROR; 981 return p->reset(); 982} 983 984status_t MediaPlayerService::Client::setAudioStreamType(int type) 985{ 986 LOGV("[%d] setAudioStreamType(%d)", mConnId, type); 987 // TODO: for hardware output, call player instead 988 Mutex::Autolock l(mLock); 989 if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type); 990 return NO_ERROR; 991} 992 993status_t MediaPlayerService::Client::setLooping(int loop) 994{ 995 LOGV("[%d] setLooping(%d)", mConnId, loop); 996 mLoop = loop; 997 sp<MediaPlayerBase> p = getPlayer(); 998 if (p != 0) return p->setLooping(loop); 999 return NO_ERROR; 1000} 1001 1002status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume) 1003{ 1004 LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume); 1005 // TODO: for hardware output, call player instead 1006 Mutex::Autolock l(mLock); 1007 if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume); 1008 return NO_ERROR; 1009} 1010 1011 1012void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2) 1013{ 1014 Client* client = static_cast<Client*>(cookie); 1015 1016 if (MEDIA_INFO == msg && 1017 MEDIA_INFO_METADATA_UPDATE == ext1) { 1018 const media::Metadata::Type metadata_type = ext2; 1019 1020 if(client->shouldDropMetadata(metadata_type)) { 1021 return; 1022 } 1023 1024 // Update the list of metadata that have changed. getMetadata 1025 // also access mMetadataUpdated and clears it. 1026 client->addNewMetadataUpdate(metadata_type); 1027 } 1028 LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2); 1029 client->mClient->notify(msg, ext1, ext2); 1030} 1031 1032 1033bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const 1034{ 1035 Mutex::Autolock lock(mLock); 1036 1037 if (findMetadata(mMetadataDrop, code)) { 1038 return true; 1039 } 1040 1041 if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) { 1042 return false; 1043 } else { 1044 return true; 1045 } 1046} 1047 1048 1049void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) { 1050 Mutex::Autolock lock(mLock); 1051 if (mMetadataUpdated.indexOf(metadata_type) < 0) { 1052 mMetadataUpdated.add(metadata_type); 1053 } 1054} 1055 1056#if CALLBACK_ANTAGONIZER 1057const int Antagonizer::interval = 10000; // 10 msecs 1058 1059Antagonizer::Antagonizer(notify_callback_f cb, void* client) : 1060 mExit(false), mActive(false), mClient(client), mCb(cb) 1061{ 1062 createThread(callbackThread, this); 1063} 1064 1065void Antagonizer::kill() 1066{ 1067 Mutex::Autolock _l(mLock); 1068 mActive = false; 1069 mExit = true; 1070 mCondition.wait(mLock); 1071} 1072 1073int Antagonizer::callbackThread(void* user) 1074{ 1075 LOGD("Antagonizer started"); 1076 Antagonizer* p = reinterpret_cast<Antagonizer*>(user); 1077 while (!p->mExit) { 1078 if (p->mActive) { 1079 LOGV("send event"); 1080 p->mCb(p->mClient, 0, 0, 0); 1081 } 1082 usleep(interval); 1083 } 1084 Mutex::Autolock _l(p->mLock); 1085 p->mCondition.signal(); 1086 LOGD("Antagonizer stopped"); 1087 return 0; 1088} 1089#endif 1090 1091static size_t kDefaultHeapSize = 1024 * 1024; // 1MB 1092 1093sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1094{ 1095 LOGV("decode(%s)", url); 1096 sp<MemoryBase> mem; 1097 sp<MediaPlayerBase> player; 1098 1099 // Protect our precious, precious DRMd ringtones by only allowing 1100 // decoding of http, but not filesystem paths or content Uris. 1101 // If the application wants to decode those, it should open a 1102 // filedescriptor for them and use that. 1103 if (url != NULL && strncmp(url, "http://", 7) != 0) { 1104 LOGD("Can't decode %s by path, use filedescriptor instead", url); 1105 return mem; 1106 } 1107 1108 player_type playerType = getPlayerType(url); 1109 LOGV("player type = %d", playerType); 1110 1111 // create the right type of player 1112 sp<AudioCache> cache = new AudioCache(url); 1113 player = android::createPlayer(playerType, cache.get(), cache->notify); 1114 if (player == NULL) goto Exit; 1115 if (player->hardwareOutput()) goto Exit; 1116 1117 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1118 1119 // set data source 1120 if (player->setDataSource(url) != NO_ERROR) goto Exit; 1121 1122 LOGV("prepare"); 1123 player->prepareAsync(); 1124 1125 LOGV("wait for prepare"); 1126 if (cache->wait() != NO_ERROR) goto Exit; 1127 1128 LOGV("start"); 1129 player->start(); 1130 1131 LOGV("wait for playback complete"); 1132 if (cache->wait() != NO_ERROR) goto Exit; 1133 1134 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1135 *pSampleRate = cache->sampleRate(); 1136 *pNumChannels = cache->channelCount(); 1137 *pFormat = cache->format(); 1138 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1139 1140Exit: 1141 if (player != 0) player->reset(); 1142 return mem; 1143} 1144 1145sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1146{ 1147 LOGV("decode(%d, %lld, %lld)", fd, offset, length); 1148 sp<MemoryBase> mem; 1149 sp<MediaPlayerBase> player; 1150 1151 player_type playerType = getPlayerType(fd, offset, length); 1152 LOGV("player type = %d", playerType); 1153 1154 // create the right type of player 1155 sp<AudioCache> cache = new AudioCache("decode_fd"); 1156 player = android::createPlayer(playerType, cache.get(), cache->notify); 1157 if (player == NULL) goto Exit; 1158 if (player->hardwareOutput()) goto Exit; 1159 1160 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1161 1162 // set data source 1163 if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit; 1164 1165 LOGV("prepare"); 1166 player->prepareAsync(); 1167 1168 LOGV("wait for prepare"); 1169 if (cache->wait() != NO_ERROR) goto Exit; 1170 1171 LOGV("start"); 1172 player->start(); 1173 1174 LOGV("wait for playback complete"); 1175 if (cache->wait() != NO_ERROR) goto Exit; 1176 1177 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1178 *pSampleRate = cache->sampleRate(); 1179 *pNumChannels = cache->channelCount(); 1180 *pFormat = cache->format(); 1181 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1182 1183Exit: 1184 if (player != 0) player->reset(); 1185 ::close(fd); 1186 return mem; 1187} 1188 1189/* 1190 * Avert your eyes, ugly hack ahead. 1191 * The following is to support music visualizations. 1192 */ 1193 1194static const int NUMVIZBUF = 32; 1195static const int VIZBUFFRAMES = 1024; 1196static const int TOTALBUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100; 1197 1198static bool gotMem = false; 1199static sp<MemoryBase> mem[NUMVIZBUF]; 1200static uint64_t timeStamp[NUMVIZBUF]; 1201static uint64_t lastReadTime; 1202static uint64_t lastWriteTime; 1203static int writeIdx = 0; 1204 1205static void allocVizBufs() { 1206 if (!gotMem) { 1207 for (int i=0;i<NUMVIZBUF;i++) { 1208 sp<MemoryHeapBase> heap = new MemoryHeapBase(VIZBUFFRAMES*2, 0, "snooper"); 1209 mem[i] = new MemoryBase(heap, 0, heap->getSize()); 1210 timeStamp[i] = 0; 1211 } 1212 gotMem = true; 1213 } 1214} 1215 1216 1217/* 1218 * Get a buffer of audio data that is about to be played. 1219 * We don't synchronize this because in practice the writer 1220 * is ahead of the reader, and even if we did happen to catch 1221 * a buffer while it's being written, it's just a visualization, 1222 * so no harm done. 1223 */ 1224static sp<MemoryBase> getVizBuffer() { 1225 1226 allocVizBufs(); 1227 1228 lastReadTime = uptimeMillis() + 100; // account for renderer delay (we shouldn't be doing this here) 1229 1230 // if there is no recent buffer (yet), just return empty handed 1231 if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) { 1232 //LOGI("@@@@ no audio data to look at yet"); 1233 return NULL; 1234 } 1235 1236 char buf[200]; 1237 1238 int closestIdx = -1; 1239 uint32_t closestTime = 0x7ffffff; 1240 1241 for (int i = 0; i < NUMVIZBUF; i++) { 1242 uint64_t tsi = timeStamp[i]; 1243 uint64_t diff = tsi > lastReadTime ? tsi - lastReadTime : lastReadTime - tsi; 1244 if (diff < closestTime) { 1245 closestIdx = i; 1246 closestTime = diff; 1247 } 1248 } 1249 1250 1251 if (closestIdx >= 0) { 1252 //LOGI("@@@ return buffer %d, %d/%d", closestIdx, uint32_t(lastReadTime), uint32_t(timeStamp[closestIdx])); 1253 return mem[closestIdx]; 1254 } 1255 1256 // we won't get here, since we either bailed out early, or got a buffer 1257 LOGD("Didn't expect to be here"); 1258 return NULL; 1259} 1260 1261static void storeVizBuf(const void *data, int len, uint64_t time) { 1262 // Copy the data in to the visualizer buffer 1263 // Assume a 16 bit stereo source for now. 1264 short *viz = (short*)mem[writeIdx]->pointer(); 1265 short *src = (short*)data; 1266 for (int i = 0; i < VIZBUFFRAMES; i++) { 1267 // Degrade quality by mixing to mono and clearing the lowest 3 bits. 1268 // This should still be good enough for a visualization 1269 *viz++ = ((int(src[0]) + int(src[1])) >> 1) & ~0x7; 1270 src += 2; 1271 } 1272 timeStamp[writeIdx++] = time; 1273 if (writeIdx >= NUMVIZBUF) { 1274 writeIdx = 0; 1275 } 1276} 1277 1278static void makeVizBuffers(const char *data, int len, uint64_t time) { 1279 1280 allocVizBufs(); 1281 1282 uint64_t startTime = time; 1283 const int frameSize = 4; // 16 bit stereo sample is 4 bytes 1284 while (len >= VIZBUFFRAMES * frameSize) { 1285 storeVizBuf(data, len, time); 1286 data += VIZBUFFRAMES * frameSize; 1287 len -= VIZBUFFRAMES * frameSize; 1288 time += 1000 * VIZBUFFRAMES / 44100; 1289 } 1290 //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time)); 1291} 1292 1293sp<IMemory> MediaPlayerService::snoop() 1294{ 1295 sp<MemoryBase> mem = getVizBuffer(); 1296 return mem; 1297} 1298 1299 1300#undef LOG_TAG 1301#define LOG_TAG "AudioSink" 1302MediaPlayerService::AudioOutput::AudioOutput() 1303 : mCallback(NULL), 1304 mCallbackCookie(NULL) { 1305 mTrack = 0; 1306 mStreamType = AudioSystem::MUSIC; 1307 mLeftVolume = 1.0; 1308 mRightVolume = 1.0; 1309 mLatency = 0; 1310 mMsecsPerFrame = 0; 1311 mNumFramesWritten = 0; 1312 setMinBufferCount(); 1313} 1314 1315MediaPlayerService::AudioOutput::~AudioOutput() 1316{ 1317 close(); 1318} 1319 1320void MediaPlayerService::AudioOutput::setMinBufferCount() 1321{ 1322 char value[PROPERTY_VALUE_MAX]; 1323 if (property_get("ro.kernel.qemu", value, 0)) { 1324 mIsOnEmulator = true; 1325 mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator 1326 } 1327} 1328 1329bool MediaPlayerService::AudioOutput::isOnEmulator() 1330{ 1331 setMinBufferCount(); 1332 return mIsOnEmulator; 1333} 1334 1335int MediaPlayerService::AudioOutput::getMinBufferCount() 1336{ 1337 setMinBufferCount(); 1338 return mMinBufferCount; 1339} 1340 1341ssize_t MediaPlayerService::AudioOutput::bufferSize() const 1342{ 1343 if (mTrack == 0) return NO_INIT; 1344 return mTrack->frameCount() * frameSize(); 1345} 1346 1347ssize_t MediaPlayerService::AudioOutput::frameCount() const 1348{ 1349 if (mTrack == 0) return NO_INIT; 1350 return mTrack->frameCount(); 1351} 1352 1353ssize_t MediaPlayerService::AudioOutput::channelCount() const 1354{ 1355 if (mTrack == 0) return NO_INIT; 1356 return mTrack->channelCount(); 1357} 1358 1359ssize_t MediaPlayerService::AudioOutput::frameSize() const 1360{ 1361 if (mTrack == 0) return NO_INIT; 1362 return mTrack->frameSize(); 1363} 1364 1365uint32_t MediaPlayerService::AudioOutput::latency () const 1366{ 1367 return mLatency; 1368} 1369 1370float MediaPlayerService::AudioOutput::msecsPerFrame() const 1371{ 1372 return mMsecsPerFrame; 1373} 1374 1375status_t MediaPlayerService::AudioOutput::open( 1376 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1377 AudioCallback cb, void *cookie) 1378{ 1379 mCallback = cb; 1380 mCallbackCookie = cookie; 1381 1382 // Check argument "bufferCount" against the mininum buffer count 1383 if (bufferCount < mMinBufferCount) { 1384 LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount); 1385 bufferCount = mMinBufferCount; 1386 1387 } 1388 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1389 if (mTrack) close(); 1390 int afSampleRate; 1391 int afFrameCount; 1392 int frameCount; 1393 1394 if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) { 1395 return NO_INIT; 1396 } 1397 if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) { 1398 return NO_INIT; 1399 } 1400 1401 frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate; 1402 1403 AudioTrack *t; 1404 if (mCallback != NULL) { 1405 t = new AudioTrack( 1406 mStreamType, 1407 sampleRate, 1408 format, 1409 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1410 frameCount, 1411 0 /* flags */, 1412 CallbackWrapper, 1413 this); 1414 } else { 1415 t = new AudioTrack( 1416 mStreamType, 1417 sampleRate, 1418 format, 1419 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1420 frameCount); 1421 } 1422 1423 if ((t == 0) || (t->initCheck() != NO_ERROR)) { 1424 LOGE("Unable to create audio track"); 1425 delete t; 1426 return NO_INIT; 1427 } 1428 1429 LOGV("setVolume"); 1430 t->setVolume(mLeftVolume, mRightVolume); 1431 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1432 mLatency = t->latency() + kAudioVideoDelayMs; 1433 mTrack = t; 1434 return NO_ERROR; 1435} 1436 1437void MediaPlayerService::AudioOutput::start() 1438{ 1439 LOGV("start"); 1440 if (mTrack) { 1441 mTrack->setVolume(mLeftVolume, mRightVolume); 1442 mTrack->start(); 1443 mTrack->getPosition(&mNumFramesWritten); 1444 } 1445} 1446 1447ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size) 1448{ 1449 LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback."); 1450 1451 //LOGV("write(%p, %u)", buffer, size); 1452 if (mTrack) { 1453 // Only make visualization buffers if anyone recently requested visualization data 1454 uint64_t now = uptimeMillis(); 1455 if (lastReadTime + TOTALBUFTIMEMSEC >= now) { 1456 // Based on the current play counter, the number of frames written and 1457 // the current real time we can calculate the approximate real start 1458 // time of the buffer we're about to write. 1459 uint32_t pos; 1460 mTrack->getPosition(&pos); 1461 1462 // we're writing ahead by this many frames: 1463 int ahead = mNumFramesWritten - pos; 1464 //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency()); 1465 // which is this many milliseconds, assuming 44100 Hz: 1466 ahead /= 44; 1467 1468 makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency()); 1469 lastWriteTime = now; 1470 } 1471 ssize_t ret = mTrack->write(buffer, size); 1472 mNumFramesWritten += ret / 4; // assume 16 bit stereo 1473 return ret; 1474 } 1475 return NO_INIT; 1476} 1477 1478void MediaPlayerService::AudioOutput::stop() 1479{ 1480 LOGV("stop"); 1481 if (mTrack) mTrack->stop(); 1482 lastWriteTime = 0; 1483} 1484 1485void MediaPlayerService::AudioOutput::flush() 1486{ 1487 LOGV("flush"); 1488 if (mTrack) mTrack->flush(); 1489} 1490 1491void MediaPlayerService::AudioOutput::pause() 1492{ 1493 LOGV("pause"); 1494 if (mTrack) mTrack->pause(); 1495} 1496 1497void MediaPlayerService::AudioOutput::close() 1498{ 1499 LOGV("close"); 1500 delete mTrack; 1501 mTrack = 0; 1502} 1503 1504void MediaPlayerService::AudioOutput::setVolume(float left, float right) 1505{ 1506 LOGV("setVolume(%f, %f)", left, right); 1507 mLeftVolume = left; 1508 mRightVolume = right; 1509 if (mTrack) { 1510 mTrack->setVolume(left, right); 1511 } 1512} 1513 1514// static 1515void MediaPlayerService::AudioOutput::CallbackWrapper( 1516 int event, void *cookie, void *info) { 1517 if (event != AudioTrack::EVENT_MORE_DATA) { 1518 return; 1519 } 1520 1521 AudioOutput *me = (AudioOutput *)cookie; 1522 AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; 1523 1524 (*me->mCallback)( 1525 me, buffer->raw, buffer->size, me->mCallbackCookie); 1526} 1527 1528#undef LOG_TAG 1529#define LOG_TAG "AudioCache" 1530MediaPlayerService::AudioCache::AudioCache(const char* name) : 1531 mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0), 1532 mError(NO_ERROR), mCommandComplete(false) 1533{ 1534 // create ashmem heap 1535 mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name); 1536} 1537 1538uint32_t MediaPlayerService::AudioCache::latency () const 1539{ 1540 return 0; 1541} 1542 1543float MediaPlayerService::AudioCache::msecsPerFrame() const 1544{ 1545 return mMsecsPerFrame; 1546} 1547 1548status_t MediaPlayerService::AudioCache::open( 1549 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1550 AudioCallback cb, void *cookie) 1551{ 1552 if (cb != NULL) { 1553 return UNKNOWN_ERROR; // TODO: implement this. 1554 } 1555 1556 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1557 if (mHeap->getHeapID() < 0) return NO_INIT; 1558 mSampleRate = sampleRate; 1559 mChannelCount = (uint16_t)channelCount; 1560 mFormat = (uint16_t)format; 1561 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1562 return NO_ERROR; 1563} 1564 1565ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size) 1566{ 1567 LOGV("write(%p, %u)", buffer, size); 1568 if ((buffer == 0) || (size == 0)) return size; 1569 1570 uint8_t* p = static_cast<uint8_t*>(mHeap->getBase()); 1571 if (p == NULL) return NO_INIT; 1572 p += mSize; 1573 LOGV("memcpy(%p, %p, %u)", p, buffer, size); 1574 if (mSize + size > mHeap->getSize()) { 1575 LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize()); 1576 size = mHeap->getSize() - mSize; 1577 } 1578 memcpy(p, buffer, size); 1579 mSize += size; 1580 return size; 1581} 1582 1583// call with lock held 1584status_t MediaPlayerService::AudioCache::wait() 1585{ 1586 Mutex::Autolock lock(mLock); 1587 if (!mCommandComplete) { 1588 mSignal.wait(mLock); 1589 } 1590 mCommandComplete = false; 1591 1592 if (mError == NO_ERROR) { 1593 LOGV("wait - success"); 1594 } else { 1595 LOGV("wait - error"); 1596 } 1597 return mError; 1598} 1599 1600void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2) 1601{ 1602 LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2); 1603 AudioCache* p = static_cast<AudioCache*>(cookie); 1604 1605 // ignore buffering messages 1606 if (msg == MEDIA_BUFFERING_UPDATE) return; 1607 1608 // set error condition 1609 if (msg == MEDIA_ERROR) { 1610 LOGE("Error %d, %d occurred", ext1, ext2); 1611 p->mError = ext1; 1612 } 1613 1614 // wake up thread 1615 LOGV("wakeup thread"); 1616 p->mCommandComplete = true; 1617 p->mSignal.signal(); 1618} 1619 1620} // namespace android 1621