MediaPlayerService.cpp revision 1d711f67ffb3ea73aca155537e0f21b444251158
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 */ 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(this, pid); 228 wp<MediaRecorderClient> w = recorder; 229 Mutex::Autolock lock(mLock); 230 mMediaRecorderClients.add(w); 231#else 232 sp<MediaRecorderClient> recorder = NULL; 233#endif 234 LOGV("Create new media recorder client from pid %d", pid); 235 return recorder; 236} 237 238void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client) 239{ 240 Mutex::Autolock lock(mLock); 241 mMediaRecorderClients.remove(client); 242 LOGV("Delete media recorder client"); 243} 244 245sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid) 246{ 247 sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid); 248 LOGV("Create new media retriever from pid %d", pid); 249 return retriever; 250} 251 252sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url) 253{ 254 int32_t connId = android_atomic_inc(&mNextConnId); 255 sp<Client> c = new Client(this, pid, connId, client); 256 LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId); 257 if (NO_ERROR != c->setDataSource(url)) 258 { 259 c.clear(); 260 return c; 261 } 262 wp<Client> w = c; 263 Mutex::Autolock lock(mLock); 264 mClients.add(w); 265 return c; 266} 267 268sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, 269 int fd, int64_t offset, int64_t length) 270{ 271 int32_t connId = android_atomic_inc(&mNextConnId); 272 sp<Client> c = new Client(this, pid, connId, client); 273 LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld", 274 connId, pid, fd, offset, length); 275 if (NO_ERROR != c->setDataSource(fd, offset, length)) { 276 c.clear(); 277 } else { 278 wp<Client> w = c; 279 Mutex::Autolock lock(mLock); 280 mClients.add(w); 281 } 282 ::close(fd); 283 return c; 284} 285 286sp<IOMX> MediaPlayerService::getOMX() { 287 Mutex::Autolock autoLock(mLock); 288 289 if (mOMX.get() == NULL) { 290 mOMX = new OMX; 291 } 292 293 return mOMX; 294} 295 296status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const 297{ 298 const size_t SIZE = 256; 299 char buffer[SIZE]; 300 String8 result; 301 302 result.append(" AudioCache\n"); 303 if (mHeap != 0) { 304 snprintf(buffer, 255, " heap base(%p), size(%d), flags(%d), device(%s)\n", 305 mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice()); 306 result.append(buffer); 307 } 308 snprintf(buffer, 255, " msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n", 309 mMsecsPerFrame, mChannelCount, mFormat, mFrameCount); 310 result.append(buffer); 311 snprintf(buffer, 255, " sample rate(%d), size(%d), error(%d), command complete(%s)\n", 312 mSampleRate, mSize, mError, mCommandComplete?"true":"false"); 313 result.append(buffer); 314 ::write(fd, result.string(), result.size()); 315 return NO_ERROR; 316} 317 318status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const 319{ 320 const size_t SIZE = 256; 321 char buffer[SIZE]; 322 String8 result; 323 324 result.append(" AudioOutput\n"); 325 snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n", 326 mStreamType, mLeftVolume, mRightVolume); 327 result.append(buffer); 328 snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n", 329 mMsecsPerFrame, mLatency); 330 result.append(buffer); 331 ::write(fd, result.string(), result.size()); 332 if (mTrack != 0) { 333 mTrack->dump(fd, args); 334 } 335 return NO_ERROR; 336} 337 338status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const 339{ 340 const size_t SIZE = 256; 341 char buffer[SIZE]; 342 String8 result; 343 result.append(" Client\n"); 344 snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n", 345 mPid, mConnId, mStatus, mLoop?"true": "false"); 346 result.append(buffer); 347 write(fd, result.string(), result.size()); 348 if (mAudioOutput != 0) { 349 mAudioOutput->dump(fd, args); 350 } 351 write(fd, "\n", 1); 352 return NO_ERROR; 353} 354 355static int myTid() { 356#ifdef HAVE_GETTID 357 return gettid(); 358#else 359 return getpid(); 360#endif 361} 362 363#if defined(__arm__) 364extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, 365 size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); 366extern "C" void free_malloc_leak_info(uint8_t* info); 367 368// Use the String-class below instead of String8 to allocate all memory 369// beforehand and not reenter the heap while we are examining it... 370struct MyString8 { 371 static const size_t MAX_SIZE = 256 * 1024; 372 373 MyString8() 374 : mPtr((char *)malloc(MAX_SIZE)) { 375 *mPtr = '\0'; 376 } 377 378 ~MyString8() { 379 free(mPtr); 380 } 381 382 void append(const char *s) { 383 strcat(mPtr, s); 384 } 385 386 const char *string() const { 387 return mPtr; 388 } 389 390 size_t size() const { 391 return strlen(mPtr); 392 } 393 394private: 395 char *mPtr; 396 397 MyString8(const MyString8 &); 398 MyString8 &operator=(const MyString8 &); 399}; 400 401void memStatus(int fd, const Vector<String16>& args) 402{ 403 const size_t SIZE = 256; 404 char buffer[SIZE]; 405 MyString8 result; 406 407 typedef struct { 408 size_t size; 409 size_t dups; 410 intptr_t * backtrace; 411 } AllocEntry; 412 413 uint8_t *info = NULL; 414 size_t overallSize = 0; 415 size_t infoSize = 0; 416 size_t totalMemory = 0; 417 size_t backtraceSize = 0; 418 419 get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize); 420 if (info) { 421 uint8_t *ptr = info; 422 size_t count = overallSize / infoSize; 423 424 snprintf(buffer, SIZE, " Allocation count %i\n", count); 425 result.append(buffer); 426 427 AllocEntry * entries = new AllocEntry[count]; 428 429 for (size_t i = 0; i < count; i++) { 430 // Each entry should be size_t, size_t, intptr_t[backtraceSize] 431 AllocEntry *e = &entries[i]; 432 433 e->size = *reinterpret_cast<size_t *>(ptr); 434 ptr += sizeof(size_t); 435 436 e->dups = *reinterpret_cast<size_t *>(ptr); 437 ptr += sizeof(size_t); 438 439 e->backtrace = reinterpret_cast<intptr_t *>(ptr); 440 ptr += sizeof(intptr_t) * backtraceSize; 441 } 442 443 // Now we need to sort the entries. They come sorted by size but 444 // not by stack trace which causes problems using diff. 445 bool moved; 446 do { 447 moved = false; 448 for (size_t i = 0; i < (count - 1); i++) { 449 AllocEntry *e1 = &entries[i]; 450 AllocEntry *e2 = &entries[i+1]; 451 452 bool swap = e1->size < e2->size; 453 if (e1->size == e2->size) { 454 for(size_t j = 0; j < backtraceSize; j++) { 455 if (e1->backtrace[j] == e2->backtrace[j]) { 456 continue; 457 } 458 swap = e1->backtrace[j] < e2->backtrace[j]; 459 break; 460 } 461 } 462 if (swap) { 463 AllocEntry t = entries[i]; 464 entries[i] = entries[i+1]; 465 entries[i+1] = t; 466 moved = true; 467 } 468 } 469 } while (moved); 470 471 for (size_t i = 0; i < count; i++) { 472 AllocEntry *e = &entries[i]; 473 474 snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups); 475 result.append(buffer); 476 for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) { 477 if (ct) { 478 result.append(", "); 479 } 480 snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]); 481 result.append(buffer); 482 } 483 result.append("\n"); 484 } 485 486 delete[] entries; 487 free_malloc_leak_info(info); 488 } 489 490 write(fd, result.string(), result.size()); 491} 492#endif 493 494status_t MediaPlayerService::dump(int fd, const Vector<String16>& args) 495{ 496 const size_t SIZE = 256; 497 char buffer[SIZE]; 498 String8 result; 499 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 500 snprintf(buffer, SIZE, "Permission Denial: " 501 "can't dump MediaPlayerService from pid=%d, uid=%d\n", 502 IPCThreadState::self()->getCallingPid(), 503 IPCThreadState::self()->getCallingUid()); 504 result.append(buffer); 505 } else { 506 Mutex::Autolock lock(mLock); 507 for (int i = 0, n = mClients.size(); i < n; ++i) { 508 sp<Client> c = mClients[i].promote(); 509 if (c != 0) c->dump(fd, args); 510 } 511 for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) { 512 result.append(" MediaRecorderClient\n"); 513 sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote(); 514 snprintf(buffer, 255, " pid(%d)\n\n", c->mPid); 515 result.append(buffer); 516 } 517 518 result.append(" Files opened and/or mapped:\n"); 519 snprintf(buffer, SIZE, "/proc/%d/maps", myTid()); 520 FILE *f = fopen(buffer, "r"); 521 if (f) { 522 while (!feof(f)) { 523 fgets(buffer, SIZE, f); 524 if (strstr(buffer, " /sdcard/") || 525 strstr(buffer, " /system/sounds/") || 526 strstr(buffer, " /system/media/")) { 527 result.append(" "); 528 result.append(buffer); 529 } 530 } 531 fclose(f); 532 } else { 533 result.append("couldn't open "); 534 result.append(buffer); 535 result.append("\n"); 536 } 537 538 snprintf(buffer, SIZE, "/proc/%d/fd", myTid()); 539 DIR *d = opendir(buffer); 540 if (d) { 541 struct dirent *ent; 542 while((ent = readdir(d)) != NULL) { 543 if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) { 544 snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name); 545 struct stat s; 546 if (lstat(buffer, &s) == 0) { 547 if ((s.st_mode & S_IFMT) == S_IFLNK) { 548 char linkto[256]; 549 int len = readlink(buffer, linkto, sizeof(linkto)); 550 if(len > 0) { 551 if(len > 255) { 552 linkto[252] = '.'; 553 linkto[253] = '.'; 554 linkto[254] = '.'; 555 linkto[255] = 0; 556 } else { 557 linkto[len] = 0; 558 } 559 if (strstr(linkto, "/sdcard/") == linkto || 560 strstr(linkto, "/system/sounds/") == linkto || 561 strstr(linkto, "/system/media/") == linkto) { 562 result.append(" "); 563 result.append(buffer); 564 result.append(" -> "); 565 result.append(linkto); 566 result.append("\n"); 567 } 568 } 569 } else { 570 result.append(" unexpected type for "); 571 result.append(buffer); 572 result.append("\n"); 573 } 574 } 575 } 576 } 577 closedir(d); 578 } else { 579 result.append("couldn't open "); 580 result.append(buffer); 581 result.append("\n"); 582 } 583 584#if defined(__arm__) 585 bool dumpMem = false; 586 for (size_t i = 0; i < args.size(); i++) { 587 if (args[i] == String16("-m")) { 588 dumpMem = true; 589 } 590 } 591 if (dumpMem) { 592 memStatus(fd, args); 593 } 594#endif 595 } 596 write(fd, result.string(), result.size()); 597 return NO_ERROR; 598} 599 600void MediaPlayerService::removeClient(wp<Client> client) 601{ 602 Mutex::Autolock lock(mLock); 603 mClients.remove(client); 604} 605 606MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid, 607 int32_t connId, const sp<IMediaPlayerClient>& client) 608{ 609 LOGV("Client(%d) constructor", connId); 610 mPid = pid; 611 mConnId = connId; 612 mService = service; 613 mClient = client; 614 mLoop = false; 615 mStatus = NO_INIT; 616#if CALLBACK_ANTAGONIZER 617 LOGD("create Antagonizer"); 618 mAntagonizer = new Antagonizer(notify, this); 619#endif 620} 621 622MediaPlayerService::Client::~Client() 623{ 624 LOGV("Client(%d) destructor pid = %d", mConnId, mPid); 625 mAudioOutput.clear(); 626 wp<Client> client(this); 627 disconnect(); 628 mService->removeClient(client); 629} 630 631void MediaPlayerService::Client::disconnect() 632{ 633 LOGV("disconnect(%d) from pid %d", mConnId, mPid); 634 // grab local reference and clear main reference to prevent future 635 // access to object 636 sp<MediaPlayerBase> p; 637 { 638 Mutex::Autolock l(mLock); 639 p = mPlayer; 640 } 641 mClient.clear(); 642 643 mPlayer.clear(); 644 645 // clear the notification to prevent callbacks to dead client 646 // and reset the player. We assume the player will serialize 647 // access to itself if necessary. 648 if (p != 0) { 649 p->setNotifyCallback(0, 0); 650#if CALLBACK_ANTAGONIZER 651 LOGD("kill Antagonizer"); 652 mAntagonizer->kill(); 653#endif 654 p->reset(); 655 } 656 657 IPCThreadState::self()->flushCommands(); 658} 659 660static player_type getDefaultPlayerType() { 661#if BUILD_WITH_FULL_STAGEFRIGHT 662 char value[PROPERTY_VALUE_MAX]; 663 if (property_get("media.stagefright.enable-player", value, NULL) 664 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 665 return STAGEFRIGHT_PLAYER; 666 } 667#endif 668 669 return PV_PLAYER; 670} 671 672player_type getPlayerType(int fd, int64_t offset, int64_t length) 673{ 674 char buf[20]; 675 lseek(fd, offset, SEEK_SET); 676 read(fd, buf, sizeof(buf)); 677 lseek(fd, offset, SEEK_SET); 678 679 long ident = *((long*)buf); 680 681 // Ogg vorbis? 682 if (ident == 0x5367674f) // 'OggS' 683 return VORBIS_PLAYER; 684 685 // Some kind of MIDI? 686 EAS_DATA_HANDLE easdata; 687 if (EAS_Init(&easdata) == EAS_SUCCESS) { 688 EAS_FILE locator; 689 locator.path = NULL; 690 locator.fd = fd; 691 locator.offset = offset; 692 locator.length = length; 693 EAS_HANDLE eashandle; 694 if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) { 695 EAS_CloseFile(easdata, eashandle); 696 EAS_Shutdown(easdata); 697 return SONIVOX_PLAYER; 698 } 699 EAS_Shutdown(easdata); 700 } 701 702 return getDefaultPlayerType(); 703} 704 705player_type getPlayerType(const char* url) 706{ 707 if (TestPlayerStub::canBeUsed(url)) { 708 return TEST_PLAYER; 709 } 710 711 // use MidiFile for MIDI extensions 712 int lenURL = strlen(url); 713 for (int i = 0; i < NELEM(FILE_EXTS); ++i) { 714 int len = strlen(FILE_EXTS[i].extension); 715 int start = lenURL - len; 716 if (start > 0) { 717 if (!strncmp(url + start, FILE_EXTS[i].extension, len)) { 718 return FILE_EXTS[i].playertype; 719 } 720 } 721 } 722 723 return getDefaultPlayerType(); 724} 725 726static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie, 727 notify_callback_f notifyFunc) 728{ 729 sp<MediaPlayerBase> p; 730 switch (playerType) { 731#ifndef NO_OPENCORE 732 case PV_PLAYER: 733 LOGV(" create PVPlayer"); 734 p = new PVPlayer(); 735 break; 736#endif 737 case SONIVOX_PLAYER: 738 LOGV(" create MidiFile"); 739 p = new MidiFile(); 740 break; 741 case VORBIS_PLAYER: 742 LOGV(" create VorbisPlayer"); 743 p = new VorbisPlayer(); 744 break; 745#if BUILD_WITH_FULL_STAGEFRIGHT 746 case STAGEFRIGHT_PLAYER: 747 LOGV(" create StagefrightPlayer"); 748 p = new StagefrightPlayer; 749 break; 750#endif 751 case TEST_PLAYER: 752 LOGV("Create Test Player stub"); 753 p = new TestPlayerStub(); 754 break; 755 } 756 if (p != NULL) { 757 if (p->initCheck() == NO_ERROR) { 758 p->setNotifyCallback(cookie, notifyFunc); 759 } else { 760 p.clear(); 761 } 762 } 763 if (p == NULL) { 764 LOGE("Failed to create player object"); 765 } 766 return p; 767} 768 769sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType) 770{ 771 // determine if we have the right player type 772 sp<MediaPlayerBase> p = mPlayer; 773 if ((p != NULL) && (p->playerType() != playerType)) { 774 LOGV("delete player"); 775 p.clear(); 776 } 777 if (p == NULL) { 778 p = android::createPlayer(playerType, this, notify); 779 } 780 return p; 781} 782 783status_t MediaPlayerService::Client::setDataSource(const char *url) 784{ 785 LOGV("setDataSource(%s)", url); 786 if (url == NULL) 787 return UNKNOWN_ERROR; 788 789 if (strncmp(url, "content://", 10) == 0) { 790 // get a filedescriptor for the content Uri and 791 // pass it to the setDataSource(fd) method 792 793 String16 url16(url); 794 int fd = android::openContentProviderFile(url16); 795 if (fd < 0) 796 { 797 LOGE("Couldn't open fd for %s", url); 798 return UNKNOWN_ERROR; 799 } 800 setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus 801 close(fd); 802 return mStatus; 803 } else { 804 player_type playerType = getPlayerType(url); 805 LOGV("player type = %d", playerType); 806 807 // create the right type of player 808 sp<MediaPlayerBase> p = createPlayer(playerType); 809 if (p == NULL) return NO_INIT; 810 811 if (!p->hardwareOutput()) { 812 mAudioOutput = new AudioOutput(); 813 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 814 } 815 816 // now set data source 817 LOGV(" setDataSource"); 818 mStatus = p->setDataSource(url); 819 if (mStatus == NO_ERROR) { 820 mPlayer = p; 821 } else { 822 LOGE(" error: %d", mStatus); 823 } 824 return mStatus; 825 } 826} 827 828status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length) 829{ 830 LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 831 struct stat sb; 832 int ret = fstat(fd, &sb); 833 if (ret != 0) { 834 LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 835 return UNKNOWN_ERROR; 836 } 837 838 LOGV("st_dev = %llu", sb.st_dev); 839 LOGV("st_mode = %u", sb.st_mode); 840 LOGV("st_uid = %lu", sb.st_uid); 841 LOGV("st_gid = %lu", sb.st_gid); 842 LOGV("st_size = %llu", sb.st_size); 843 844 if (offset >= sb.st_size) { 845 LOGE("offset error"); 846 ::close(fd); 847 return UNKNOWN_ERROR; 848 } 849 if (offset + length > sb.st_size) { 850 length = sb.st_size - offset; 851 LOGV("calculated length = %lld", length); 852 } 853 854 player_type playerType = getPlayerType(fd, offset, length); 855 LOGV("player type = %d", playerType); 856 857 // create the right type of player 858 sp<MediaPlayerBase> p = createPlayer(playerType); 859 if (p == NULL) return NO_INIT; 860 861 if (!p->hardwareOutput()) { 862 mAudioOutput = new AudioOutput(); 863 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 864 } 865 866 // now set data source 867 mStatus = p->setDataSource(fd, offset, length); 868 if (mStatus == NO_ERROR) mPlayer = p; 869 return mStatus; 870} 871 872status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface) 873{ 874 LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get()); 875 sp<MediaPlayerBase> p = getPlayer(); 876 if (p == 0) return UNKNOWN_ERROR; 877 return p->setVideoSurface(surface); 878} 879 880status_t MediaPlayerService::Client::invoke(const Parcel& request, 881 Parcel *reply) 882{ 883 sp<MediaPlayerBase> p = getPlayer(); 884 if (p == NULL) return UNKNOWN_ERROR; 885 return p->invoke(request, reply); 886} 887 888// This call doesn't need to access the native player. 889status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter) 890{ 891 status_t status; 892 media::Metadata::Filter allow, drop; 893 894 if (unmarshallFilter(filter, &allow, &status) && 895 unmarshallFilter(filter, &drop, &status)) { 896 Mutex::Autolock lock(mLock); 897 898 mMetadataAllow = allow; 899 mMetadataDrop = drop; 900 } 901 return status; 902} 903 904status_t MediaPlayerService::Client::getMetadata( 905 bool update_only, bool apply_filter, Parcel *reply) 906{ 907 sp<MediaPlayerBase> player = getPlayer(); 908 if (player == 0) return UNKNOWN_ERROR; 909 910 status_t status; 911 // Placeholder for the return code, updated by the caller. 912 reply->writeInt32(-1); 913 914 media::Metadata::Filter ids; 915 916 // We don't block notifications while we fetch the data. We clear 917 // mMetadataUpdated first so we don't lose notifications happening 918 // during the rest of this call. 919 { 920 Mutex::Autolock lock(mLock); 921 if (update_only) { 922 ids = mMetadataUpdated; 923 } 924 mMetadataUpdated.clear(); 925 } 926 927 media::Metadata metadata(reply); 928 929 metadata.appendHeader(); 930 status = player->getMetadata(ids, reply); 931 932 if (status != OK) { 933 metadata.resetParcel(); 934 LOGE("getMetadata failed %d", status); 935 return status; 936 } 937 938 // FIXME: Implement filtering on the result. Not critical since 939 // filtering takes place on the update notifications already. This 940 // would be when all the metadata are fetch and a filter is set. 941 942 // Everything is fine, update the metadata length. 943 metadata.updateLength(); 944 return OK; 945} 946 947status_t MediaPlayerService::Client::prepareAsync() 948{ 949 LOGV("[%d] prepareAsync", mConnId); 950 sp<MediaPlayerBase> p = getPlayer(); 951 if (p == 0) return UNKNOWN_ERROR; 952 status_t ret = p->prepareAsync(); 953#if CALLBACK_ANTAGONIZER 954 LOGD("start Antagonizer"); 955 if (ret == NO_ERROR) mAntagonizer->start(); 956#endif 957 return ret; 958} 959 960status_t MediaPlayerService::Client::start() 961{ 962 LOGV("[%d] start", mConnId); 963 sp<MediaPlayerBase> p = getPlayer(); 964 if (p == 0) return UNKNOWN_ERROR; 965 p->setLooping(mLoop); 966 return p->start(); 967} 968 969status_t MediaPlayerService::Client::stop() 970{ 971 LOGV("[%d] stop", mConnId); 972 sp<MediaPlayerBase> p = getPlayer(); 973 if (p == 0) return UNKNOWN_ERROR; 974 return p->stop(); 975} 976 977status_t MediaPlayerService::Client::pause() 978{ 979 LOGV("[%d] pause", mConnId); 980 sp<MediaPlayerBase> p = getPlayer(); 981 if (p == 0) return UNKNOWN_ERROR; 982 return p->pause(); 983} 984 985status_t MediaPlayerService::Client::isPlaying(bool* state) 986{ 987 *state = false; 988 sp<MediaPlayerBase> p = getPlayer(); 989 if (p == 0) return UNKNOWN_ERROR; 990 *state = p->isPlaying(); 991 LOGV("[%d] isPlaying: %d", mConnId, *state); 992 return NO_ERROR; 993} 994 995status_t MediaPlayerService::Client::getCurrentPosition(int *msec) 996{ 997 LOGV("getCurrentPosition"); 998 sp<MediaPlayerBase> p = getPlayer(); 999 if (p == 0) return UNKNOWN_ERROR; 1000 status_t ret = p->getCurrentPosition(msec); 1001 if (ret == NO_ERROR) { 1002 LOGV("[%d] getCurrentPosition = %d", mConnId, *msec); 1003 } else { 1004 LOGE("getCurrentPosition returned %d", ret); 1005 } 1006 return ret; 1007} 1008 1009status_t MediaPlayerService::Client::getDuration(int *msec) 1010{ 1011 LOGV("getDuration"); 1012 sp<MediaPlayerBase> p = getPlayer(); 1013 if (p == 0) return UNKNOWN_ERROR; 1014 status_t ret = p->getDuration(msec); 1015 if (ret == NO_ERROR) { 1016 LOGV("[%d] getDuration = %d", mConnId, *msec); 1017 } else { 1018 LOGE("getDuration returned %d", ret); 1019 } 1020 return ret; 1021} 1022 1023status_t MediaPlayerService::Client::seekTo(int msec) 1024{ 1025 LOGV("[%d] seekTo(%d)", mConnId, msec); 1026 sp<MediaPlayerBase> p = getPlayer(); 1027 if (p == 0) return UNKNOWN_ERROR; 1028 return p->seekTo(msec); 1029} 1030 1031status_t MediaPlayerService::Client::reset() 1032{ 1033 LOGV("[%d] reset", mConnId); 1034 sp<MediaPlayerBase> p = getPlayer(); 1035 if (p == 0) return UNKNOWN_ERROR; 1036 return p->reset(); 1037} 1038 1039status_t MediaPlayerService::Client::setAudioStreamType(int type) 1040{ 1041 LOGV("[%d] setAudioStreamType(%d)", mConnId, type); 1042 // TODO: for hardware output, call player instead 1043 Mutex::Autolock l(mLock); 1044 if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type); 1045 return NO_ERROR; 1046} 1047 1048status_t MediaPlayerService::Client::setLooping(int loop) 1049{ 1050 LOGV("[%d] setLooping(%d)", mConnId, loop); 1051 mLoop = loop; 1052 sp<MediaPlayerBase> p = getPlayer(); 1053 if (p != 0) return p->setLooping(loop); 1054 return NO_ERROR; 1055} 1056 1057status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume) 1058{ 1059 LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume); 1060 // TODO: for hardware output, call player instead 1061 Mutex::Autolock l(mLock); 1062 if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume); 1063 return NO_ERROR; 1064} 1065 1066 1067void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2) 1068{ 1069 Client* client = static_cast<Client*>(cookie); 1070 1071 if (MEDIA_INFO == msg && 1072 MEDIA_INFO_METADATA_UPDATE == ext1) { 1073 const media::Metadata::Type metadata_type = ext2; 1074 1075 if(client->shouldDropMetadata(metadata_type)) { 1076 return; 1077 } 1078 1079 // Update the list of metadata that have changed. getMetadata 1080 // also access mMetadataUpdated and clears it. 1081 client->addNewMetadataUpdate(metadata_type); 1082 } 1083 LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2); 1084 client->mClient->notify(msg, ext1, ext2); 1085} 1086 1087 1088bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const 1089{ 1090 Mutex::Autolock lock(mLock); 1091 1092 if (findMetadata(mMetadataDrop, code)) { 1093 return true; 1094 } 1095 1096 if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) { 1097 return false; 1098 } else { 1099 return true; 1100 } 1101} 1102 1103 1104void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) { 1105 Mutex::Autolock lock(mLock); 1106 if (mMetadataUpdated.indexOf(metadata_type) < 0) { 1107 mMetadataUpdated.add(metadata_type); 1108 } 1109} 1110 1111#if CALLBACK_ANTAGONIZER 1112const int Antagonizer::interval = 10000; // 10 msecs 1113 1114Antagonizer::Antagonizer(notify_callback_f cb, void* client) : 1115 mExit(false), mActive(false), mClient(client), mCb(cb) 1116{ 1117 createThread(callbackThread, this); 1118} 1119 1120void Antagonizer::kill() 1121{ 1122 Mutex::Autolock _l(mLock); 1123 mActive = false; 1124 mExit = true; 1125 mCondition.wait(mLock); 1126} 1127 1128int Antagonizer::callbackThread(void* user) 1129{ 1130 LOGD("Antagonizer started"); 1131 Antagonizer* p = reinterpret_cast<Antagonizer*>(user); 1132 while (!p->mExit) { 1133 if (p->mActive) { 1134 LOGV("send event"); 1135 p->mCb(p->mClient, 0, 0, 0); 1136 } 1137 usleep(interval); 1138 } 1139 Mutex::Autolock _l(p->mLock); 1140 p->mCondition.signal(); 1141 LOGD("Antagonizer stopped"); 1142 return 0; 1143} 1144#endif 1145 1146static size_t kDefaultHeapSize = 1024 * 1024; // 1MB 1147 1148sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1149{ 1150 LOGV("decode(%s)", url); 1151 sp<MemoryBase> mem; 1152 sp<MediaPlayerBase> player; 1153 1154 // Protect our precious, precious DRMd ringtones by only allowing 1155 // decoding of http, but not filesystem paths or content Uris. 1156 // If the application wants to decode those, it should open a 1157 // filedescriptor for them and use that. 1158 if (url != NULL && strncmp(url, "http://", 7) != 0) { 1159 LOGD("Can't decode %s by path, use filedescriptor instead", url); 1160 return mem; 1161 } 1162 1163 player_type playerType = getPlayerType(url); 1164 LOGV("player type = %d", playerType); 1165 1166 // create the right type of player 1167 sp<AudioCache> cache = new AudioCache(url); 1168 player = android::createPlayer(playerType, cache.get(), cache->notify); 1169 if (player == NULL) goto Exit; 1170 if (player->hardwareOutput()) goto Exit; 1171 1172 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1173 1174 // set data source 1175 if (player->setDataSource(url) != NO_ERROR) goto Exit; 1176 1177 LOGV("prepare"); 1178 player->prepareAsync(); 1179 1180 LOGV("wait for prepare"); 1181 if (cache->wait() != NO_ERROR) goto Exit; 1182 1183 LOGV("start"); 1184 player->start(); 1185 1186 LOGV("wait for playback complete"); 1187 if (cache->wait() != NO_ERROR) goto Exit; 1188 1189 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1190 *pSampleRate = cache->sampleRate(); 1191 *pNumChannels = cache->channelCount(); 1192 *pFormat = cache->format(); 1193 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1194 1195Exit: 1196 if (player != 0) player->reset(); 1197 return mem; 1198} 1199 1200sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1201{ 1202 LOGV("decode(%d, %lld, %lld)", fd, offset, length); 1203 sp<MemoryBase> mem; 1204 sp<MediaPlayerBase> player; 1205 1206 player_type playerType = getPlayerType(fd, offset, length); 1207 LOGV("player type = %d", playerType); 1208 1209 // create the right type of player 1210 sp<AudioCache> cache = new AudioCache("decode_fd"); 1211 player = android::createPlayer(playerType, cache.get(), cache->notify); 1212 if (player == NULL) goto Exit; 1213 if (player->hardwareOutput()) goto Exit; 1214 1215 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1216 1217 // set data source 1218 if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit; 1219 1220 LOGV("prepare"); 1221 player->prepareAsync(); 1222 1223 LOGV("wait for prepare"); 1224 if (cache->wait() != NO_ERROR) goto Exit; 1225 1226 LOGV("start"); 1227 player->start(); 1228 1229 LOGV("wait for playback complete"); 1230 if (cache->wait() != NO_ERROR) goto Exit; 1231 1232 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1233 *pSampleRate = cache->sampleRate(); 1234 *pNumChannels = cache->channelCount(); 1235 *pFormat = cache->format(); 1236 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1237 1238Exit: 1239 if (player != 0) player->reset(); 1240 ::close(fd); 1241 return mem; 1242} 1243 1244/* 1245 * Avert your eyes, ugly hack ahead. 1246 * The following is to support music visualizations. 1247 */ 1248 1249static const int NUMVIZBUF = 32; 1250static const int VIZBUFFRAMES = 1024; 1251static const int TOTALBUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100; 1252 1253static bool gotMem = false; 1254static sp<MemoryBase> mem[NUMVIZBUF]; 1255static uint64_t timeStamp[NUMVIZBUF]; 1256static uint64_t lastReadTime; 1257static uint64_t lastWriteTime; 1258static int writeIdx = 0; 1259 1260static void allocVizBufs() { 1261 if (!gotMem) { 1262 for (int i=0;i<NUMVIZBUF;i++) { 1263 sp<MemoryHeapBase> heap = new MemoryHeapBase(VIZBUFFRAMES*2, 0, "snooper"); 1264 mem[i] = new MemoryBase(heap, 0, heap->getSize()); 1265 timeStamp[i] = 0; 1266 } 1267 gotMem = true; 1268 } 1269} 1270 1271 1272/* 1273 * Get a buffer of audio data that is about to be played. 1274 * We don't synchronize this because in practice the writer 1275 * is ahead of the reader, and even if we did happen to catch 1276 * a buffer while it's being written, it's just a visualization, 1277 * so no harm done. 1278 */ 1279static sp<MemoryBase> getVizBuffer() { 1280 1281 allocVizBufs(); 1282 1283 lastReadTime = uptimeMillis() + 100; // account for renderer delay (we shouldn't be doing this here) 1284 1285 // if there is no recent buffer (yet), just return empty handed 1286 if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) { 1287 //LOGI("@@@@ no audio data to look at yet"); 1288 return NULL; 1289 } 1290 1291 char buf[200]; 1292 1293 int closestIdx = -1; 1294 uint32_t closestTime = 0x7ffffff; 1295 1296 for (int i = 0; i < NUMVIZBUF; i++) { 1297 uint64_t tsi = timeStamp[i]; 1298 uint64_t diff = tsi > lastReadTime ? tsi - lastReadTime : lastReadTime - tsi; 1299 if (diff < closestTime) { 1300 closestIdx = i; 1301 closestTime = diff; 1302 } 1303 } 1304 1305 1306 if (closestIdx >= 0) { 1307 //LOGI("@@@ return buffer %d, %d/%d", closestIdx, uint32_t(lastReadTime), uint32_t(timeStamp[closestIdx])); 1308 return mem[closestIdx]; 1309 } 1310 1311 // we won't get here, since we either bailed out early, or got a buffer 1312 LOGD("Didn't expect to be here"); 1313 return NULL; 1314} 1315 1316static void storeVizBuf(const void *data, int len, uint64_t time) { 1317 // Copy the data in to the visualizer buffer 1318 // Assume a 16 bit stereo source for now. 1319 short *viz = (short*)mem[writeIdx]->pointer(); 1320 short *src = (short*)data; 1321 for (int i = 0; i < VIZBUFFRAMES; i++) { 1322 // Degrade quality by mixing to mono and clearing the lowest 3 bits. 1323 // This should still be good enough for a visualization 1324 *viz++ = ((int(src[0]) + int(src[1])) >> 1) & ~0x7; 1325 src += 2; 1326 } 1327 timeStamp[writeIdx++] = time; 1328 if (writeIdx >= NUMVIZBUF) { 1329 writeIdx = 0; 1330 } 1331} 1332 1333static void makeVizBuffers(const char *data, int len, uint64_t time) { 1334 1335 allocVizBufs(); 1336 1337 uint64_t startTime = time; 1338 const int frameSize = 4; // 16 bit stereo sample is 4 bytes 1339 while (len >= VIZBUFFRAMES * frameSize) { 1340 storeVizBuf(data, len, time); 1341 data += VIZBUFFRAMES * frameSize; 1342 len -= VIZBUFFRAMES * frameSize; 1343 time += 1000 * VIZBUFFRAMES / 44100; 1344 } 1345 //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time)); 1346} 1347 1348sp<IMemory> MediaPlayerService::snoop() 1349{ 1350 sp<MemoryBase> mem = getVizBuffer(); 1351 return mem; 1352} 1353 1354 1355#undef LOG_TAG 1356#define LOG_TAG "AudioSink" 1357MediaPlayerService::AudioOutput::AudioOutput() 1358 : mCallback(NULL), 1359 mCallbackCookie(NULL) { 1360 mTrack = 0; 1361 mStreamType = AudioSystem::MUSIC; 1362 mLeftVolume = 1.0; 1363 mRightVolume = 1.0; 1364 mLatency = 0; 1365 mMsecsPerFrame = 0; 1366 mNumFramesWritten = 0; 1367 setMinBufferCount(); 1368} 1369 1370MediaPlayerService::AudioOutput::~AudioOutput() 1371{ 1372 close(); 1373} 1374 1375void MediaPlayerService::AudioOutput::setMinBufferCount() 1376{ 1377 char value[PROPERTY_VALUE_MAX]; 1378 if (property_get("ro.kernel.qemu", value, 0)) { 1379 mIsOnEmulator = true; 1380 mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator 1381 } 1382} 1383 1384bool MediaPlayerService::AudioOutput::isOnEmulator() 1385{ 1386 setMinBufferCount(); 1387 return mIsOnEmulator; 1388} 1389 1390int MediaPlayerService::AudioOutput::getMinBufferCount() 1391{ 1392 setMinBufferCount(); 1393 return mMinBufferCount; 1394} 1395 1396ssize_t MediaPlayerService::AudioOutput::bufferSize() const 1397{ 1398 if (mTrack == 0) return NO_INIT; 1399 return mTrack->frameCount() * frameSize(); 1400} 1401 1402ssize_t MediaPlayerService::AudioOutput::frameCount() const 1403{ 1404 if (mTrack == 0) return NO_INIT; 1405 return mTrack->frameCount(); 1406} 1407 1408ssize_t MediaPlayerService::AudioOutput::channelCount() const 1409{ 1410 if (mTrack == 0) return NO_INIT; 1411 return mTrack->channelCount(); 1412} 1413 1414ssize_t MediaPlayerService::AudioOutput::frameSize() const 1415{ 1416 if (mTrack == 0) return NO_INIT; 1417 return mTrack->frameSize(); 1418} 1419 1420uint32_t MediaPlayerService::AudioOutput::latency () const 1421{ 1422 return mLatency; 1423} 1424 1425float MediaPlayerService::AudioOutput::msecsPerFrame() const 1426{ 1427 return mMsecsPerFrame; 1428} 1429 1430status_t MediaPlayerService::AudioOutput::open( 1431 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1432 AudioCallback cb, void *cookie) 1433{ 1434 mCallback = cb; 1435 mCallbackCookie = cookie; 1436 1437 // Check argument "bufferCount" against the mininum buffer count 1438 if (bufferCount < mMinBufferCount) { 1439 LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount); 1440 bufferCount = mMinBufferCount; 1441 1442 } 1443 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1444 if (mTrack) close(); 1445 int afSampleRate; 1446 int afFrameCount; 1447 int frameCount; 1448 1449 if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) { 1450 return NO_INIT; 1451 } 1452 if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) { 1453 return NO_INIT; 1454 } 1455 1456 frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate; 1457 1458 AudioTrack *t; 1459 if (mCallback != NULL) { 1460 t = new AudioTrack( 1461 mStreamType, 1462 sampleRate, 1463 format, 1464 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1465 frameCount, 1466 0 /* flags */, 1467 CallbackWrapper, 1468 this); 1469 } else { 1470 t = new AudioTrack( 1471 mStreamType, 1472 sampleRate, 1473 format, 1474 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1475 frameCount); 1476 } 1477 1478 if ((t == 0) || (t->initCheck() != NO_ERROR)) { 1479 LOGE("Unable to create audio track"); 1480 delete t; 1481 return NO_INIT; 1482 } 1483 1484 LOGV("setVolume"); 1485 t->setVolume(mLeftVolume, mRightVolume); 1486 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1487 mLatency = t->latency(); 1488 mTrack = t; 1489 return NO_ERROR; 1490} 1491 1492void MediaPlayerService::AudioOutput::start() 1493{ 1494 LOGV("start"); 1495 if (mTrack) { 1496 mTrack->setVolume(mLeftVolume, mRightVolume); 1497 mTrack->start(); 1498 mTrack->getPosition(&mNumFramesWritten); 1499 } 1500} 1501 1502ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size) 1503{ 1504 LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback."); 1505 1506 //LOGV("write(%p, %u)", buffer, size); 1507 if (mTrack) { 1508 // Only make visualization buffers if anyone recently requested visualization data 1509 uint64_t now = uptimeMillis(); 1510 if (lastReadTime + TOTALBUFTIMEMSEC >= now) { 1511 // Based on the current play counter, the number of frames written and 1512 // the current real time we can calculate the approximate real start 1513 // time of the buffer we're about to write. 1514 uint32_t pos; 1515 mTrack->getPosition(&pos); 1516 1517 // we're writing ahead by this many frames: 1518 int ahead = mNumFramesWritten - pos; 1519 //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency()); 1520 // which is this many milliseconds, assuming 44100 Hz: 1521 ahead /= 44; 1522 1523 makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency()); 1524 lastWriteTime = now; 1525 } 1526 ssize_t ret = mTrack->write(buffer, size); 1527 mNumFramesWritten += ret / 4; // assume 16 bit stereo 1528 return ret; 1529 } 1530 return NO_INIT; 1531} 1532 1533void MediaPlayerService::AudioOutput::stop() 1534{ 1535 LOGV("stop"); 1536 if (mTrack) mTrack->stop(); 1537 lastWriteTime = 0; 1538} 1539 1540void MediaPlayerService::AudioOutput::flush() 1541{ 1542 LOGV("flush"); 1543 if (mTrack) mTrack->flush(); 1544} 1545 1546void MediaPlayerService::AudioOutput::pause() 1547{ 1548 LOGV("pause"); 1549 if (mTrack) mTrack->pause(); 1550 lastWriteTime = 0; 1551} 1552 1553void MediaPlayerService::AudioOutput::close() 1554{ 1555 LOGV("close"); 1556 delete mTrack; 1557 mTrack = 0; 1558} 1559 1560void MediaPlayerService::AudioOutput::setVolume(float left, float right) 1561{ 1562 LOGV("setVolume(%f, %f)", left, right); 1563 mLeftVolume = left; 1564 mRightVolume = right; 1565 if (mTrack) { 1566 mTrack->setVolume(left, right); 1567 } 1568} 1569 1570// static 1571void MediaPlayerService::AudioOutput::CallbackWrapper( 1572 int event, void *cookie, void *info) { 1573 if (event != AudioTrack::EVENT_MORE_DATA) { 1574 return; 1575 } 1576 1577 AudioOutput *me = (AudioOutput *)cookie; 1578 AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; 1579 1580 (*me->mCallback)( 1581 me, buffer->raw, buffer->size, me->mCallbackCookie); 1582} 1583 1584#undef LOG_TAG 1585#define LOG_TAG "AudioCache" 1586MediaPlayerService::AudioCache::AudioCache(const char* name) : 1587 mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0), 1588 mError(NO_ERROR), mCommandComplete(false) 1589{ 1590 // create ashmem heap 1591 mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name); 1592} 1593 1594uint32_t MediaPlayerService::AudioCache::latency () const 1595{ 1596 return 0; 1597} 1598 1599float MediaPlayerService::AudioCache::msecsPerFrame() const 1600{ 1601 return mMsecsPerFrame; 1602} 1603 1604status_t MediaPlayerService::AudioCache::open( 1605 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1606 AudioCallback cb, void *cookie) 1607{ 1608 if (cb != NULL) { 1609 return UNKNOWN_ERROR; // TODO: implement this. 1610 } 1611 1612 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1613 if (mHeap->getHeapID() < 0) return NO_INIT; 1614 mSampleRate = sampleRate; 1615 mChannelCount = (uint16_t)channelCount; 1616 mFormat = (uint16_t)format; 1617 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1618 return NO_ERROR; 1619} 1620 1621ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size) 1622{ 1623 LOGV("write(%p, %u)", buffer, size); 1624 if ((buffer == 0) || (size == 0)) return size; 1625 1626 uint8_t* p = static_cast<uint8_t*>(mHeap->getBase()); 1627 if (p == NULL) return NO_INIT; 1628 p += mSize; 1629 LOGV("memcpy(%p, %p, %u)", p, buffer, size); 1630 if (mSize + size > mHeap->getSize()) { 1631 LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize()); 1632 size = mHeap->getSize() - mSize; 1633 } 1634 memcpy(p, buffer, size); 1635 mSize += size; 1636 return size; 1637} 1638 1639// call with lock held 1640status_t MediaPlayerService::AudioCache::wait() 1641{ 1642 Mutex::Autolock lock(mLock); 1643 if (!mCommandComplete) { 1644 mSignal.wait(mLock); 1645 } 1646 mCommandComplete = false; 1647 1648 if (mError == NO_ERROR) { 1649 LOGV("wait - success"); 1650 } else { 1651 LOGV("wait - error"); 1652 } 1653 return mError; 1654} 1655 1656void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2) 1657{ 1658 LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2); 1659 AudioCache* p = static_cast<AudioCache*>(cookie); 1660 1661 // ignore buffering messages 1662 if (msg == MEDIA_BUFFERING_UPDATE) return; 1663 1664 // set error condition 1665 if (msg == MEDIA_ERROR) { 1666 LOGE("Error %d, %d occurred", ext1, ext2); 1667 p->mError = ext1; 1668 } 1669 1670 // wake up thread 1671 LOGV("wakeup thread"); 1672 p->mCommandComplete = true; 1673 p->mSignal.signal(); 1674} 1675 1676} // namespace android 1677