MediaPlayerService.cpp revision 4bbc0ba371c52951191eff1cba7c1ea5d27ee976
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#ifndef NO_OPENCORE 203 {".wma", PV_PLAYER}, 204 {".wmv", PV_PLAYER}, 205 {".asf", PV_PLAYER}, 206#endif 207}; 208 209// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround 210/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4; 211/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false; 212 213void MediaPlayerService::instantiate() { 214 defaultServiceManager()->addService( 215 String16("media.player"), new MediaPlayerService()); 216} 217 218MediaPlayerService::MediaPlayerService() 219{ 220 LOGV("MediaPlayerService created"); 221 mNextConnId = 1; 222} 223 224MediaPlayerService::~MediaPlayerService() 225{ 226 LOGV("MediaPlayerService destroyed"); 227} 228 229sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid) 230{ 231#ifndef NO_OPENCORE 232 sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid); 233 wp<MediaRecorderClient> w = recorder; 234 Mutex::Autolock lock(mLock); 235 mMediaRecorderClients.add(w); 236#else 237 sp<MediaRecorderClient> recorder = NULL; 238#endif 239 LOGV("Create new media recorder client from pid %d", pid); 240 return recorder; 241} 242 243void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client) 244{ 245 Mutex::Autolock lock(mLock); 246 mMediaRecorderClients.remove(client); 247 LOGV("Delete media recorder client"); 248} 249 250sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid) 251{ 252 sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid); 253 LOGV("Create new media retriever from pid %d", pid); 254 return retriever; 255} 256 257sp<IMediaPlayer> MediaPlayerService::create( 258 pid_t pid, const sp<IMediaPlayerClient>& client, const char* url, 259 const KeyedVector<String8, String8> *headers) 260{ 261 int32_t connId = android_atomic_inc(&mNextConnId); 262 sp<Client> c = new Client(this, pid, connId, client); 263 LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId); 264 if (NO_ERROR != c->setDataSource(url, headers)) 265 { 266 c.clear(); 267 return c; 268 } 269 wp<Client> w = c; 270 Mutex::Autolock lock(mLock); 271 mClients.add(w); 272 return c; 273} 274 275sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, 276 int fd, int64_t offset, int64_t length) 277{ 278 int32_t connId = android_atomic_inc(&mNextConnId); 279 sp<Client> c = new Client(this, pid, connId, client); 280 LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld", 281 connId, pid, fd, offset, length); 282 if (NO_ERROR != c->setDataSource(fd, offset, length)) { 283 c.clear(); 284 } else { 285 wp<Client> w = c; 286 Mutex::Autolock lock(mLock); 287 mClients.add(w); 288 } 289 ::close(fd); 290 return c; 291} 292 293sp<IOMX> MediaPlayerService::getOMX() { 294 Mutex::Autolock autoLock(mLock); 295 296 if (mOMX.get() == NULL) { 297 mOMX = new OMX; 298 } 299 300 return mOMX; 301} 302 303status_t MediaPlayerService::AudioCache::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(" AudioCache\n"); 310 if (mHeap != 0) { 311 snprintf(buffer, 255, " heap base(%p), size(%d), flags(%d), device(%s)\n", 312 mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice()); 313 result.append(buffer); 314 } 315 snprintf(buffer, 255, " msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n", 316 mMsecsPerFrame, mChannelCount, mFormat, mFrameCount); 317 result.append(buffer); 318 snprintf(buffer, 255, " sample rate(%d), size(%d), error(%d), command complete(%s)\n", 319 mSampleRate, mSize, mError, mCommandComplete?"true":"false"); 320 result.append(buffer); 321 ::write(fd, result.string(), result.size()); 322 return NO_ERROR; 323} 324 325status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const 326{ 327 const size_t SIZE = 256; 328 char buffer[SIZE]; 329 String8 result; 330 331 result.append(" AudioOutput\n"); 332 snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n", 333 mStreamType, mLeftVolume, mRightVolume); 334 result.append(buffer); 335 snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n", 336 mMsecsPerFrame, mLatency); 337 result.append(buffer); 338 ::write(fd, result.string(), result.size()); 339 if (mTrack != 0) { 340 mTrack->dump(fd, args); 341 } 342 return NO_ERROR; 343} 344 345status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const 346{ 347 const size_t SIZE = 256; 348 char buffer[SIZE]; 349 String8 result; 350 result.append(" Client\n"); 351 snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n", 352 mPid, mConnId, mStatus, mLoop?"true": "false"); 353 result.append(buffer); 354 write(fd, result.string(), result.size()); 355 if (mAudioOutput != 0) { 356 mAudioOutput->dump(fd, args); 357 } 358 write(fd, "\n", 1); 359 return NO_ERROR; 360} 361 362static int myTid() { 363#ifdef HAVE_GETTID 364 return gettid(); 365#else 366 return getpid(); 367#endif 368} 369 370#if defined(__arm__) 371extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, 372 size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); 373extern "C" void free_malloc_leak_info(uint8_t* info); 374 375// Use the String-class below instead of String8 to allocate all memory 376// beforehand and not reenter the heap while we are examining it... 377struct MyString8 { 378 static const size_t MAX_SIZE = 256 * 1024; 379 380 MyString8() 381 : mPtr((char *)malloc(MAX_SIZE)) { 382 *mPtr = '\0'; 383 } 384 385 ~MyString8() { 386 free(mPtr); 387 } 388 389 void append(const char *s) { 390 strcat(mPtr, s); 391 } 392 393 const char *string() const { 394 return mPtr; 395 } 396 397 size_t size() const { 398 return strlen(mPtr); 399 } 400 401private: 402 char *mPtr; 403 404 MyString8(const MyString8 &); 405 MyString8 &operator=(const MyString8 &); 406}; 407 408void memStatus(int fd, const Vector<String16>& args) 409{ 410 const size_t SIZE = 256; 411 char buffer[SIZE]; 412 MyString8 result; 413 414 typedef struct { 415 size_t size; 416 size_t dups; 417 intptr_t * backtrace; 418 } AllocEntry; 419 420 uint8_t *info = NULL; 421 size_t overallSize = 0; 422 size_t infoSize = 0; 423 size_t totalMemory = 0; 424 size_t backtraceSize = 0; 425 426 get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize); 427 if (info) { 428 uint8_t *ptr = info; 429 size_t count = overallSize / infoSize; 430 431 snprintf(buffer, SIZE, " Allocation count %i\n", count); 432 result.append(buffer); 433 snprintf(buffer, SIZE, " Total memory %i\n", totalMemory); 434 result.append(buffer); 435 436 AllocEntry * entries = new AllocEntry[count]; 437 438 for (size_t i = 0; i < count; i++) { 439 // Each entry should be size_t, size_t, intptr_t[backtraceSize] 440 AllocEntry *e = &entries[i]; 441 442 e->size = *reinterpret_cast<size_t *>(ptr); 443 ptr += sizeof(size_t); 444 445 e->dups = *reinterpret_cast<size_t *>(ptr); 446 ptr += sizeof(size_t); 447 448 e->backtrace = reinterpret_cast<intptr_t *>(ptr); 449 ptr += sizeof(intptr_t) * backtraceSize; 450 } 451 452 // Now we need to sort the entries. They come sorted by size but 453 // not by stack trace which causes problems using diff. 454 bool moved; 455 do { 456 moved = false; 457 for (size_t i = 0; i < (count - 1); i++) { 458 AllocEntry *e1 = &entries[i]; 459 AllocEntry *e2 = &entries[i+1]; 460 461 bool swap = e1->size < e2->size; 462 if (e1->size == e2->size) { 463 for(size_t j = 0; j < backtraceSize; j++) { 464 if (e1->backtrace[j] == e2->backtrace[j]) { 465 continue; 466 } 467 swap = e1->backtrace[j] < e2->backtrace[j]; 468 break; 469 } 470 } 471 if (swap) { 472 AllocEntry t = entries[i]; 473 entries[i] = entries[i+1]; 474 entries[i+1] = t; 475 moved = true; 476 } 477 } 478 } while (moved); 479 480 for (size_t i = 0; i < count; i++) { 481 AllocEntry *e = &entries[i]; 482 483 snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups); 484 result.append(buffer); 485 for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) { 486 if (ct) { 487 result.append(", "); 488 } 489 snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]); 490 result.append(buffer); 491 } 492 result.append("\n"); 493 } 494 495 delete[] entries; 496 free_malloc_leak_info(info); 497 } 498 499 write(fd, result.string(), result.size()); 500} 501#endif 502 503status_t MediaPlayerService::dump(int fd, const Vector<String16>& args) 504{ 505 const size_t SIZE = 256; 506 char buffer[SIZE]; 507 String8 result; 508 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 509 snprintf(buffer, SIZE, "Permission Denial: " 510 "can't dump MediaPlayerService from pid=%d, uid=%d\n", 511 IPCThreadState::self()->getCallingPid(), 512 IPCThreadState::self()->getCallingUid()); 513 result.append(buffer); 514 } else { 515 Mutex::Autolock lock(mLock); 516 for (int i = 0, n = mClients.size(); i < n; ++i) { 517 sp<Client> c = mClients[i].promote(); 518 if (c != 0) c->dump(fd, args); 519 } 520 for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) { 521 result.append(" MediaRecorderClient\n"); 522 sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote(); 523 snprintf(buffer, 255, " pid(%d)\n\n", c->mPid); 524 result.append(buffer); 525 } 526 527 result.append(" Files opened and/or mapped:\n"); 528 snprintf(buffer, SIZE, "/proc/%d/maps", myTid()); 529 FILE *f = fopen(buffer, "r"); 530 if (f) { 531 while (!feof(f)) { 532 fgets(buffer, SIZE, f); 533 if (strstr(buffer, " /sdcard/") || 534 strstr(buffer, " /system/sounds/") || 535 strstr(buffer, " /system/media/")) { 536 result.append(" "); 537 result.append(buffer); 538 } 539 } 540 fclose(f); 541 } else { 542 result.append("couldn't open "); 543 result.append(buffer); 544 result.append("\n"); 545 } 546 547 snprintf(buffer, SIZE, "/proc/%d/fd", myTid()); 548 DIR *d = opendir(buffer); 549 if (d) { 550 struct dirent *ent; 551 while((ent = readdir(d)) != NULL) { 552 if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) { 553 snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name); 554 struct stat s; 555 if (lstat(buffer, &s) == 0) { 556 if ((s.st_mode & S_IFMT) == S_IFLNK) { 557 char linkto[256]; 558 int len = readlink(buffer, linkto, sizeof(linkto)); 559 if(len > 0) { 560 if(len > 255) { 561 linkto[252] = '.'; 562 linkto[253] = '.'; 563 linkto[254] = '.'; 564 linkto[255] = 0; 565 } else { 566 linkto[len] = 0; 567 } 568 if (strstr(linkto, "/sdcard/") == linkto || 569 strstr(linkto, "/system/sounds/") == linkto || 570 strstr(linkto, "/system/media/") == linkto) { 571 result.append(" "); 572 result.append(buffer); 573 result.append(" -> "); 574 result.append(linkto); 575 result.append("\n"); 576 } 577 } 578 } else { 579 result.append(" unexpected type for "); 580 result.append(buffer); 581 result.append("\n"); 582 } 583 } 584 } 585 } 586 closedir(d); 587 } else { 588 result.append("couldn't open "); 589 result.append(buffer); 590 result.append("\n"); 591 } 592 593#if defined(__arm__) 594 bool dumpMem = false; 595 for (size_t i = 0; i < args.size(); i++) { 596 if (args[i] == String16("-m")) { 597 dumpMem = true; 598 } 599 } 600 if (dumpMem) { 601 memStatus(fd, args); 602 } 603#endif 604 } 605 write(fd, result.string(), result.size()); 606 return NO_ERROR; 607} 608 609void MediaPlayerService::removeClient(wp<Client> client) 610{ 611 Mutex::Autolock lock(mLock); 612 mClients.remove(client); 613} 614 615MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid, 616 int32_t connId, const sp<IMediaPlayerClient>& client) 617{ 618 LOGV("Client(%d) constructor", connId); 619 mPid = pid; 620 mConnId = connId; 621 mService = service; 622 mClient = client; 623 mLoop = false; 624 mStatus = NO_INIT; 625#if CALLBACK_ANTAGONIZER 626 LOGD("create Antagonizer"); 627 mAntagonizer = new Antagonizer(notify, this); 628#endif 629} 630 631MediaPlayerService::Client::~Client() 632{ 633 LOGV("Client(%d) destructor pid = %d", mConnId, mPid); 634 mAudioOutput.clear(); 635 wp<Client> client(this); 636 disconnect(); 637 mService->removeClient(client); 638} 639 640void MediaPlayerService::Client::disconnect() 641{ 642 LOGV("disconnect(%d) from pid %d", mConnId, mPid); 643 // grab local reference and clear main reference to prevent future 644 // access to object 645 sp<MediaPlayerBase> p; 646 { 647 Mutex::Autolock l(mLock); 648 p = mPlayer; 649 } 650 mClient.clear(); 651 652 mPlayer.clear(); 653 654 // clear the notification to prevent callbacks to dead client 655 // and reset the player. We assume the player will serialize 656 // access to itself if necessary. 657 if (p != 0) { 658 p->setNotifyCallback(0, 0); 659#if CALLBACK_ANTAGONIZER 660 LOGD("kill Antagonizer"); 661 mAntagonizer->kill(); 662#endif 663 p->reset(); 664 } 665 666 IPCThreadState::self()->flushCommands(); 667} 668 669static player_type getDefaultPlayerType() { 670#if BUILD_WITH_FULL_STAGEFRIGHT 671 char value[PROPERTY_VALUE_MAX]; 672 if (property_get("media.stagefright.enable-player", value, NULL) 673 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 674 return STAGEFRIGHT_PLAYER; 675 } 676#endif 677 678 return PV_PLAYER; 679} 680 681player_type getPlayerType(int fd, int64_t offset, int64_t length) 682{ 683 char buf[20]; 684 lseek(fd, offset, SEEK_SET); 685 read(fd, buf, sizeof(buf)); 686 lseek(fd, offset, SEEK_SET); 687 688 long ident = *((long*)buf); 689 690 // Ogg vorbis? 691 if (ident == 0x5367674f) // 'OggS' 692 return VORBIS_PLAYER; 693 694#ifndef NO_OPENCORE 695 if (ident == 0x75b22630) { 696 // The magic number for .asf files, i.e. wmv and wma content. 697 // These are not currently supported through stagefright. 698 return PV_PLAYER; 699 } 700#endif 701 702 // Some kind of MIDI? 703 EAS_DATA_HANDLE easdata; 704 if (EAS_Init(&easdata) == EAS_SUCCESS) { 705 EAS_FILE locator; 706 locator.path = NULL; 707 locator.fd = fd; 708 locator.offset = offset; 709 locator.length = length; 710 EAS_HANDLE eashandle; 711 if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) { 712 EAS_CloseFile(easdata, eashandle); 713 EAS_Shutdown(easdata); 714 return SONIVOX_PLAYER; 715 } 716 EAS_Shutdown(easdata); 717 } 718 719 return getDefaultPlayerType(); 720} 721 722player_type getPlayerType(const char* url) 723{ 724 if (TestPlayerStub::canBeUsed(url)) { 725 return TEST_PLAYER; 726 } 727 728 // use MidiFile for MIDI extensions 729 int lenURL = strlen(url); 730 for (int i = 0; i < NELEM(FILE_EXTS); ++i) { 731 int len = strlen(FILE_EXTS[i].extension); 732 int start = lenURL - len; 733 if (start > 0) { 734 if (!strncmp(url + start, FILE_EXTS[i].extension, len)) { 735 return FILE_EXTS[i].playertype; 736 } 737 } 738 } 739 740 if (!strncasecmp(url, "http://", 7)) { 741 char value[PROPERTY_VALUE_MAX]; 742 if (!property_get("media.stagefright.enable-http", value, NULL) 743 || (strcmp(value, "1") && strcasecmp(value, "true"))) { 744 // For now, we're going to use PV for http-based playback 745 // by default until we can clear up a few more issues. 746 return PV_PLAYER; 747 } 748 } 749 750 return getDefaultPlayerType(); 751} 752 753static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie, 754 notify_callback_f notifyFunc) 755{ 756 sp<MediaPlayerBase> p; 757 switch (playerType) { 758#ifndef NO_OPENCORE 759 case PV_PLAYER: 760 LOGV(" create PVPlayer"); 761 p = new PVPlayer(); 762 break; 763#endif 764 case SONIVOX_PLAYER: 765 LOGV(" create MidiFile"); 766 p = new MidiFile(); 767 break; 768 case VORBIS_PLAYER: 769 LOGV(" create VorbisPlayer"); 770 p = new VorbisPlayer(); 771 break; 772#if BUILD_WITH_FULL_STAGEFRIGHT 773 case STAGEFRIGHT_PLAYER: 774 LOGV(" create StagefrightPlayer"); 775 p = new StagefrightPlayer; 776 break; 777#endif 778 case TEST_PLAYER: 779 LOGV("Create Test Player stub"); 780 p = new TestPlayerStub(); 781 break; 782 } 783 if (p != NULL) { 784 if (p->initCheck() == NO_ERROR) { 785 p->setNotifyCallback(cookie, notifyFunc); 786 } else { 787 p.clear(); 788 } 789 } 790 if (p == NULL) { 791 LOGE("Failed to create player object"); 792 } 793 return p; 794} 795 796sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType) 797{ 798 // determine if we have the right player type 799 sp<MediaPlayerBase> p = mPlayer; 800 if ((p != NULL) && (p->playerType() != playerType)) { 801 LOGV("delete player"); 802 p.clear(); 803 } 804 if (p == NULL) { 805 p = android::createPlayer(playerType, this, notify); 806 } 807 return p; 808} 809 810status_t MediaPlayerService::Client::setDataSource( 811 const char *url, const KeyedVector<String8, String8> *headers) 812{ 813 LOGV("setDataSource(%s)", url); 814 if (url == NULL) 815 return UNKNOWN_ERROR; 816 817 if (strncmp(url, "content://", 10) == 0) { 818 // get a filedescriptor for the content Uri and 819 // pass it to the setDataSource(fd) method 820 821 String16 url16(url); 822 int fd = android::openContentProviderFile(url16); 823 if (fd < 0) 824 { 825 LOGE("Couldn't open fd for %s", url); 826 return UNKNOWN_ERROR; 827 } 828 setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus 829 close(fd); 830 return mStatus; 831 } else { 832 player_type playerType = getPlayerType(url); 833 LOGV("player type = %d", playerType); 834 835 // create the right type of player 836 sp<MediaPlayerBase> p = createPlayer(playerType); 837 if (p == NULL) return NO_INIT; 838 839 if (!p->hardwareOutput()) { 840 mAudioOutput = new AudioOutput(); 841 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 842 } 843 844 // now set data source 845 LOGV(" setDataSource"); 846 mStatus = p->setDataSource(url, headers); 847 if (mStatus == NO_ERROR) { 848 mPlayer = p; 849 } else { 850 LOGE(" error: %d", mStatus); 851 } 852 return mStatus; 853 } 854} 855 856status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length) 857{ 858 LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 859 struct stat sb; 860 int ret = fstat(fd, &sb); 861 if (ret != 0) { 862 LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 863 return UNKNOWN_ERROR; 864 } 865 866 LOGV("st_dev = %llu", sb.st_dev); 867 LOGV("st_mode = %u", sb.st_mode); 868 LOGV("st_uid = %lu", sb.st_uid); 869 LOGV("st_gid = %lu", sb.st_gid); 870 LOGV("st_size = %llu", sb.st_size); 871 872 if (offset >= sb.st_size) { 873 LOGE("offset error"); 874 ::close(fd); 875 return UNKNOWN_ERROR; 876 } 877 if (offset + length > sb.st_size) { 878 length = sb.st_size - offset; 879 LOGV("calculated length = %lld", length); 880 } 881 882 player_type playerType = getPlayerType(fd, offset, length); 883 LOGV("player type = %d", playerType); 884 885 // create the right type of player 886 sp<MediaPlayerBase> p = createPlayer(playerType); 887 if (p == NULL) return NO_INIT; 888 889 if (!p->hardwareOutput()) { 890 mAudioOutput = new AudioOutput(); 891 static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput); 892 } 893 894 // now set data source 895 mStatus = p->setDataSource(fd, offset, length); 896 if (mStatus == NO_ERROR) mPlayer = p; 897 return mStatus; 898} 899 900status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface) 901{ 902 LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get()); 903 sp<MediaPlayerBase> p = getPlayer(); 904 if (p == 0) return UNKNOWN_ERROR; 905 return p->setVideoSurface(surface); 906} 907 908status_t MediaPlayerService::Client::invoke(const Parcel& request, 909 Parcel *reply) 910{ 911 sp<MediaPlayerBase> p = getPlayer(); 912 if (p == NULL) return UNKNOWN_ERROR; 913 return p->invoke(request, reply); 914} 915 916// This call doesn't need to access the native player. 917status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter) 918{ 919 status_t status; 920 media::Metadata::Filter allow, drop; 921 922 if (unmarshallFilter(filter, &allow, &status) && 923 unmarshallFilter(filter, &drop, &status)) { 924 Mutex::Autolock lock(mLock); 925 926 mMetadataAllow = allow; 927 mMetadataDrop = drop; 928 } 929 return status; 930} 931 932status_t MediaPlayerService::Client::getMetadata( 933 bool update_only, bool apply_filter, Parcel *reply) 934{ 935 sp<MediaPlayerBase> player = getPlayer(); 936 if (player == 0) return UNKNOWN_ERROR; 937 938 status_t status; 939 // Placeholder for the return code, updated by the caller. 940 reply->writeInt32(-1); 941 942 media::Metadata::Filter ids; 943 944 // We don't block notifications while we fetch the data. We clear 945 // mMetadataUpdated first so we don't lose notifications happening 946 // during the rest of this call. 947 { 948 Mutex::Autolock lock(mLock); 949 if (update_only) { 950 ids = mMetadataUpdated; 951 } 952 mMetadataUpdated.clear(); 953 } 954 955 media::Metadata metadata(reply); 956 957 metadata.appendHeader(); 958 status = player->getMetadata(ids, reply); 959 960 if (status != OK) { 961 metadata.resetParcel(); 962 LOGE("getMetadata failed %d", status); 963 return status; 964 } 965 966 // FIXME: Implement filtering on the result. Not critical since 967 // filtering takes place on the update notifications already. This 968 // would be when all the metadata are fetch and a filter is set. 969 970 // Everything is fine, update the metadata length. 971 metadata.updateLength(); 972 return OK; 973} 974 975status_t MediaPlayerService::Client::suspend() { 976 sp<MediaPlayerBase> p = getPlayer(); 977 if (p == 0) return UNKNOWN_ERROR; 978 979 return p->suspend(); 980} 981 982status_t MediaPlayerService::Client::resume() { 983 sp<MediaPlayerBase> p = getPlayer(); 984 if (p == 0) return UNKNOWN_ERROR; 985 986 return p->resume(); 987} 988 989status_t MediaPlayerService::Client::prepareAsync() 990{ 991 LOGV("[%d] prepareAsync", mConnId); 992 sp<MediaPlayerBase> p = getPlayer(); 993 if (p == 0) return UNKNOWN_ERROR; 994 status_t ret = p->prepareAsync(); 995#if CALLBACK_ANTAGONIZER 996 LOGD("start Antagonizer"); 997 if (ret == NO_ERROR) mAntagonizer->start(); 998#endif 999 return ret; 1000} 1001 1002status_t MediaPlayerService::Client::start() 1003{ 1004 LOGV("[%d] start", mConnId); 1005 sp<MediaPlayerBase> p = getPlayer(); 1006 if (p == 0) return UNKNOWN_ERROR; 1007 p->setLooping(mLoop); 1008 return p->start(); 1009} 1010 1011status_t MediaPlayerService::Client::stop() 1012{ 1013 LOGV("[%d] stop", mConnId); 1014 sp<MediaPlayerBase> p = getPlayer(); 1015 if (p == 0) return UNKNOWN_ERROR; 1016 return p->stop(); 1017} 1018 1019status_t MediaPlayerService::Client::pause() 1020{ 1021 LOGV("[%d] pause", mConnId); 1022 sp<MediaPlayerBase> p = getPlayer(); 1023 if (p == 0) return UNKNOWN_ERROR; 1024 return p->pause(); 1025} 1026 1027status_t MediaPlayerService::Client::isPlaying(bool* state) 1028{ 1029 *state = false; 1030 sp<MediaPlayerBase> p = getPlayer(); 1031 if (p == 0) return UNKNOWN_ERROR; 1032 *state = p->isPlaying(); 1033 LOGV("[%d] isPlaying: %d", mConnId, *state); 1034 return NO_ERROR; 1035} 1036 1037status_t MediaPlayerService::Client::getCurrentPosition(int *msec) 1038{ 1039 LOGV("getCurrentPosition"); 1040 sp<MediaPlayerBase> p = getPlayer(); 1041 if (p == 0) return UNKNOWN_ERROR; 1042 status_t ret = p->getCurrentPosition(msec); 1043 if (ret == NO_ERROR) { 1044 LOGV("[%d] getCurrentPosition = %d", mConnId, *msec); 1045 } else { 1046 LOGE("getCurrentPosition returned %d", ret); 1047 } 1048 return ret; 1049} 1050 1051status_t MediaPlayerService::Client::getDuration(int *msec) 1052{ 1053 LOGV("getDuration"); 1054 sp<MediaPlayerBase> p = getPlayer(); 1055 if (p == 0) return UNKNOWN_ERROR; 1056 status_t ret = p->getDuration(msec); 1057 if (ret == NO_ERROR) { 1058 LOGV("[%d] getDuration = %d", mConnId, *msec); 1059 } else { 1060 LOGE("getDuration returned %d", ret); 1061 } 1062 return ret; 1063} 1064 1065status_t MediaPlayerService::Client::seekTo(int msec) 1066{ 1067 LOGV("[%d] seekTo(%d)", mConnId, msec); 1068 sp<MediaPlayerBase> p = getPlayer(); 1069 if (p == 0) return UNKNOWN_ERROR; 1070 return p->seekTo(msec); 1071} 1072 1073status_t MediaPlayerService::Client::reset() 1074{ 1075 LOGV("[%d] reset", mConnId); 1076 sp<MediaPlayerBase> p = getPlayer(); 1077 if (p == 0) return UNKNOWN_ERROR; 1078 return p->reset(); 1079} 1080 1081status_t MediaPlayerService::Client::setAudioStreamType(int type) 1082{ 1083 LOGV("[%d] setAudioStreamType(%d)", mConnId, type); 1084 // TODO: for hardware output, call player instead 1085 Mutex::Autolock l(mLock); 1086 if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type); 1087 return NO_ERROR; 1088} 1089 1090status_t MediaPlayerService::Client::setLooping(int loop) 1091{ 1092 LOGV("[%d] setLooping(%d)", mConnId, loop); 1093 mLoop = loop; 1094 sp<MediaPlayerBase> p = getPlayer(); 1095 if (p != 0) return p->setLooping(loop); 1096 return NO_ERROR; 1097} 1098 1099status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume) 1100{ 1101 LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume); 1102 // TODO: for hardware output, call player instead 1103 Mutex::Autolock l(mLock); 1104 if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume); 1105 return NO_ERROR; 1106} 1107 1108 1109void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2) 1110{ 1111 Client* client = static_cast<Client*>(cookie); 1112 1113 if (MEDIA_INFO == msg && 1114 MEDIA_INFO_METADATA_UPDATE == ext1) { 1115 const media::Metadata::Type metadata_type = ext2; 1116 1117 if(client->shouldDropMetadata(metadata_type)) { 1118 return; 1119 } 1120 1121 // Update the list of metadata that have changed. getMetadata 1122 // also access mMetadataUpdated and clears it. 1123 client->addNewMetadataUpdate(metadata_type); 1124 } 1125 LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2); 1126 client->mClient->notify(msg, ext1, ext2); 1127} 1128 1129 1130bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const 1131{ 1132 Mutex::Autolock lock(mLock); 1133 1134 if (findMetadata(mMetadataDrop, code)) { 1135 return true; 1136 } 1137 1138 if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) { 1139 return false; 1140 } else { 1141 return true; 1142 } 1143} 1144 1145 1146void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) { 1147 Mutex::Autolock lock(mLock); 1148 if (mMetadataUpdated.indexOf(metadata_type) < 0) { 1149 mMetadataUpdated.add(metadata_type); 1150 } 1151} 1152 1153#if CALLBACK_ANTAGONIZER 1154const int Antagonizer::interval = 10000; // 10 msecs 1155 1156Antagonizer::Antagonizer(notify_callback_f cb, void* client) : 1157 mExit(false), mActive(false), mClient(client), mCb(cb) 1158{ 1159 createThread(callbackThread, this); 1160} 1161 1162void Antagonizer::kill() 1163{ 1164 Mutex::Autolock _l(mLock); 1165 mActive = false; 1166 mExit = true; 1167 mCondition.wait(mLock); 1168} 1169 1170int Antagonizer::callbackThread(void* user) 1171{ 1172 LOGD("Antagonizer started"); 1173 Antagonizer* p = reinterpret_cast<Antagonizer*>(user); 1174 while (!p->mExit) { 1175 if (p->mActive) { 1176 LOGV("send event"); 1177 p->mCb(p->mClient, 0, 0, 0); 1178 } 1179 usleep(interval); 1180 } 1181 Mutex::Autolock _l(p->mLock); 1182 p->mCondition.signal(); 1183 LOGD("Antagonizer stopped"); 1184 return 0; 1185} 1186#endif 1187 1188static size_t kDefaultHeapSize = 1024 * 1024; // 1MB 1189 1190sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1191{ 1192 LOGV("decode(%s)", url); 1193 sp<MemoryBase> mem; 1194 sp<MediaPlayerBase> player; 1195 1196 // Protect our precious, precious DRMd ringtones by only allowing 1197 // decoding of http, but not filesystem paths or content Uris. 1198 // If the application wants to decode those, it should open a 1199 // filedescriptor for them and use that. 1200 if (url != NULL && strncmp(url, "http://", 7) != 0) { 1201 LOGD("Can't decode %s by path, use filedescriptor instead", url); 1202 return mem; 1203 } 1204 1205 player_type playerType = getPlayerType(url); 1206 LOGV("player type = %d", playerType); 1207 1208 // create the right type of player 1209 sp<AudioCache> cache = new AudioCache(url); 1210 player = android::createPlayer(playerType, cache.get(), cache->notify); 1211 if (player == NULL) goto Exit; 1212 if (player->hardwareOutput()) goto Exit; 1213 1214 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1215 1216 // set data source 1217 if (player->setDataSource(url) != NO_ERROR) goto Exit; 1218 1219 LOGV("prepare"); 1220 player->prepareAsync(); 1221 1222 LOGV("wait for prepare"); 1223 if (cache->wait() != NO_ERROR) goto Exit; 1224 1225 LOGV("start"); 1226 player->start(); 1227 1228 LOGV("wait for playback complete"); 1229 if (cache->wait() != NO_ERROR) goto Exit; 1230 1231 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1232 *pSampleRate = cache->sampleRate(); 1233 *pNumChannels = cache->channelCount(); 1234 *pFormat = cache->format(); 1235 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1236 1237Exit: 1238 if (player != 0) player->reset(); 1239 return mem; 1240} 1241 1242sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat) 1243{ 1244 LOGV("decode(%d, %lld, %lld)", fd, offset, length); 1245 sp<MemoryBase> mem; 1246 sp<MediaPlayerBase> player; 1247 1248 player_type playerType = getPlayerType(fd, offset, length); 1249 LOGV("player type = %d", playerType); 1250 1251 // create the right type of player 1252 sp<AudioCache> cache = new AudioCache("decode_fd"); 1253 player = android::createPlayer(playerType, cache.get(), cache->notify); 1254 if (player == NULL) goto Exit; 1255 if (player->hardwareOutput()) goto Exit; 1256 1257 static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache); 1258 1259 // set data source 1260 if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit; 1261 1262 LOGV("prepare"); 1263 player->prepareAsync(); 1264 1265 LOGV("wait for prepare"); 1266 if (cache->wait() != NO_ERROR) goto Exit; 1267 1268 LOGV("start"); 1269 player->start(); 1270 1271 LOGV("wait for playback complete"); 1272 if (cache->wait() != NO_ERROR) goto Exit; 1273 1274 mem = new MemoryBase(cache->getHeap(), 0, cache->size()); 1275 *pSampleRate = cache->sampleRate(); 1276 *pNumChannels = cache->channelCount(); 1277 *pFormat = cache->format(); 1278 LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat); 1279 1280Exit: 1281 if (player != 0) player->reset(); 1282 ::close(fd); 1283 return mem; 1284} 1285 1286/* 1287 * Avert your eyes, ugly hack ahead. 1288 * The following is to support music visualizations. 1289 */ 1290 1291static const int NUMVIZBUF = 32; 1292static const int VIZBUFFRAMES = 1024; 1293static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100; 1294static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC; 1295 1296static bool gotMem = false; 1297static sp<MemoryHeapBase> heap; 1298static sp<MemoryBase> mem[NUMVIZBUF]; 1299static uint64_t endTime; 1300static uint64_t lastReadTime; 1301static uint64_t lastWriteTime; 1302static int writeIdx = 0; 1303 1304static void allocVizBufs() { 1305 if (!gotMem) { 1306 heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper"); 1307 for (int i=0;i<NUMVIZBUF;i++) { 1308 mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2); 1309 } 1310 endTime = 0; 1311 gotMem = true; 1312 } 1313} 1314 1315 1316/* 1317 * Get a buffer of audio data that is about to be played. 1318 * We don't synchronize this because in practice the writer 1319 * is ahead of the reader, and even if we did happen to catch 1320 * a buffer while it's being written, it's just a visualization, 1321 * so no harm done. 1322 */ 1323static sp<MemoryBase> getVizBuffer() { 1324 1325 allocVizBufs(); 1326 1327 lastReadTime = uptimeMillis(); 1328 1329 // if there is no recent buffer (yet), just return empty handed 1330 if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) { 1331 //LOGI("@@@@ no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime); 1332 return NULL; 1333 } 1334 1335 int timedelta = endTime - lastReadTime; 1336 if (timedelta < 0) timedelta = 0; 1337 int framedelta = timedelta * 44100 / 1000; 1338 int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1; 1339 while (headIdx < 0) { 1340 headIdx += NUMVIZBUF; 1341 } 1342 return mem[headIdx]; 1343} 1344 1345// Append the data to the vizualization buffer 1346static void makeVizBuffers(const char *data, int len, uint64_t time) { 1347 1348 allocVizBufs(); 1349 1350 uint64_t startTime = time; 1351 const int frameSize = 4; // 16 bit stereo sample is 4 bytes 1352 int offset = writeIdx; 1353 int maxoff = heap->getSize() / 2; // in shorts 1354 short *base = (short*)heap->getBase(); 1355 short *src = (short*)data; 1356 while (len > 0) { 1357 1358 // Degrade quality by mixing to mono and clearing the lowest 3 bits. 1359 // This should still be good enough for a visualization 1360 base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7; 1361 src += 2; 1362 len -= frameSize; 1363 if (offset >= maxoff) { 1364 offset = 0; 1365 } 1366 } 1367 writeIdx = offset; 1368 endTime = time + (len / frameSize) / 44; 1369 //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time)); 1370} 1371 1372sp<IMemory> MediaPlayerService::snoop() 1373{ 1374 sp<MemoryBase> mem = getVizBuffer(); 1375 return mem; 1376} 1377 1378 1379#undef LOG_TAG 1380#define LOG_TAG "AudioSink" 1381MediaPlayerService::AudioOutput::AudioOutput() 1382 : mCallback(NULL), 1383 mCallbackCookie(NULL) { 1384 mTrack = 0; 1385 mStreamType = AudioSystem::MUSIC; 1386 mLeftVolume = 1.0; 1387 mRightVolume = 1.0; 1388 mLatency = 0; 1389 mMsecsPerFrame = 0; 1390 mNumFramesWritten = 0; 1391 setMinBufferCount(); 1392} 1393 1394MediaPlayerService::AudioOutput::~AudioOutput() 1395{ 1396 close(); 1397} 1398 1399void MediaPlayerService::AudioOutput::setMinBufferCount() 1400{ 1401 char value[PROPERTY_VALUE_MAX]; 1402 if (property_get("ro.kernel.qemu", value, 0)) { 1403 mIsOnEmulator = true; 1404 mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator 1405 } 1406} 1407 1408bool MediaPlayerService::AudioOutput::isOnEmulator() 1409{ 1410 setMinBufferCount(); 1411 return mIsOnEmulator; 1412} 1413 1414int MediaPlayerService::AudioOutput::getMinBufferCount() 1415{ 1416 setMinBufferCount(); 1417 return mMinBufferCount; 1418} 1419 1420ssize_t MediaPlayerService::AudioOutput::bufferSize() const 1421{ 1422 if (mTrack == 0) return NO_INIT; 1423 return mTrack->frameCount() * frameSize(); 1424} 1425 1426ssize_t MediaPlayerService::AudioOutput::frameCount() const 1427{ 1428 if (mTrack == 0) return NO_INIT; 1429 return mTrack->frameCount(); 1430} 1431 1432ssize_t MediaPlayerService::AudioOutput::channelCount() const 1433{ 1434 if (mTrack == 0) return NO_INIT; 1435 return mTrack->channelCount(); 1436} 1437 1438ssize_t MediaPlayerService::AudioOutput::frameSize() const 1439{ 1440 if (mTrack == 0) return NO_INIT; 1441 return mTrack->frameSize(); 1442} 1443 1444uint32_t MediaPlayerService::AudioOutput::latency () const 1445{ 1446 return mLatency; 1447} 1448 1449float MediaPlayerService::AudioOutput::msecsPerFrame() const 1450{ 1451 return mMsecsPerFrame; 1452} 1453 1454status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) 1455{ 1456 if (mTrack == 0) return NO_INIT; 1457 return mTrack->getPosition(position); 1458} 1459 1460status_t MediaPlayerService::AudioOutput::open( 1461 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1462 AudioCallback cb, void *cookie) 1463{ 1464 mCallback = cb; 1465 mCallbackCookie = cookie; 1466 1467 // Check argument "bufferCount" against the mininum buffer count 1468 if (bufferCount < mMinBufferCount) { 1469 LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount); 1470 bufferCount = mMinBufferCount; 1471 1472 } 1473 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1474 if (mTrack) close(); 1475 int afSampleRate; 1476 int afFrameCount; 1477 int frameCount; 1478 1479 if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) { 1480 return NO_INIT; 1481 } 1482 if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) { 1483 return NO_INIT; 1484 } 1485 1486 frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate; 1487 1488 AudioTrack *t; 1489 if (mCallback != NULL) { 1490 t = new AudioTrack( 1491 mStreamType, 1492 sampleRate, 1493 format, 1494 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1495 frameCount, 1496 0 /* flags */, 1497 CallbackWrapper, 1498 this); 1499 } else { 1500 t = new AudioTrack( 1501 mStreamType, 1502 sampleRate, 1503 format, 1504 (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO, 1505 frameCount); 1506 } 1507 1508 if ((t == 0) || (t->initCheck() != NO_ERROR)) { 1509 LOGE("Unable to create audio track"); 1510 delete t; 1511 return NO_INIT; 1512 } 1513 1514 LOGV("setVolume"); 1515 t->setVolume(mLeftVolume, mRightVolume); 1516 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1517 mLatency = t->latency(); 1518 mTrack = t; 1519 return NO_ERROR; 1520} 1521 1522void MediaPlayerService::AudioOutput::start() 1523{ 1524 LOGV("start"); 1525 if (mTrack) { 1526 mTrack->setVolume(mLeftVolume, mRightVolume); 1527 mTrack->start(); 1528 mTrack->getPosition(&mNumFramesWritten); 1529 } 1530} 1531 1532void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) { 1533 // Only make visualization buffers if anyone recently requested visualization data 1534 uint64_t now = uptimeMillis(); 1535 if (lastReadTime + TOTALBUFTIMEMSEC >= now) { 1536 // Based on the current play counter, the number of frames written and 1537 // the current real time we can calculate the approximate real start 1538 // time of the buffer we're about to write. 1539 uint32_t pos; 1540 mTrack->getPosition(&pos); 1541 1542 // we're writing ahead by this many frames: 1543 int ahead = mNumFramesWritten - pos; 1544 //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency()); 1545 // which is this many milliseconds, assuming 44100 Hz: 1546 ahead /= 44; 1547 1548 makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency()); 1549 lastWriteTime = now; 1550 } 1551} 1552 1553 1554ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size) 1555{ 1556 LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback."); 1557 1558 //LOGV("write(%p, %u)", buffer, size); 1559 if (mTrack) { 1560 snoopWrite(buffer, size); 1561 ssize_t ret = mTrack->write(buffer, size); 1562 mNumFramesWritten += ret / 4; // assume 16 bit stereo 1563 return ret; 1564 } 1565 return NO_INIT; 1566} 1567 1568void MediaPlayerService::AudioOutput::stop() 1569{ 1570 LOGV("stop"); 1571 if (mTrack) mTrack->stop(); 1572 lastWriteTime = 0; 1573} 1574 1575void MediaPlayerService::AudioOutput::flush() 1576{ 1577 LOGV("flush"); 1578 if (mTrack) mTrack->flush(); 1579} 1580 1581void MediaPlayerService::AudioOutput::pause() 1582{ 1583 LOGV("pause"); 1584 if (mTrack) mTrack->pause(); 1585 lastWriteTime = 0; 1586} 1587 1588void MediaPlayerService::AudioOutput::close() 1589{ 1590 LOGV("close"); 1591 delete mTrack; 1592 mTrack = 0; 1593} 1594 1595void MediaPlayerService::AudioOutput::setVolume(float left, float right) 1596{ 1597 LOGV("setVolume(%f, %f)", left, right); 1598 mLeftVolume = left; 1599 mRightVolume = right; 1600 if (mTrack) { 1601 mTrack->setVolume(left, right); 1602 } 1603} 1604 1605// static 1606void MediaPlayerService::AudioOutput::CallbackWrapper( 1607 int event, void *cookie, void *info) { 1608 //LOGV("callbackwrapper"); 1609 if (event != AudioTrack::EVENT_MORE_DATA) { 1610 return; 1611 } 1612 1613 AudioOutput *me = (AudioOutput *)cookie; 1614 AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; 1615 1616 size_t actualSize = (*me->mCallback)( 1617 me, buffer->raw, buffer->size, me->mCallbackCookie); 1618 1619 buffer->size = actualSize; 1620 1621 if (actualSize > 0) { 1622 me->snoopWrite(buffer->raw, actualSize); 1623 } 1624} 1625 1626#undef LOG_TAG 1627#define LOG_TAG "AudioCache" 1628MediaPlayerService::AudioCache::AudioCache(const char* name) : 1629 mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0), 1630 mError(NO_ERROR), mCommandComplete(false) 1631{ 1632 // create ashmem heap 1633 mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name); 1634} 1635 1636uint32_t MediaPlayerService::AudioCache::latency () const 1637{ 1638 return 0; 1639} 1640 1641float MediaPlayerService::AudioCache::msecsPerFrame() const 1642{ 1643 return mMsecsPerFrame; 1644} 1645 1646status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) 1647{ 1648 if (position == 0) return BAD_VALUE; 1649 *position = mSize; 1650 return NO_ERROR; 1651} 1652 1653//////////////////////////////////////////////////////////////////////////////// 1654 1655struct CallbackThread : public Thread { 1656 CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink, 1657 MediaPlayerBase::AudioSink::AudioCallback cb, 1658 void *cookie); 1659 1660protected: 1661 virtual ~CallbackThread(); 1662 1663 virtual bool threadLoop(); 1664 1665private: 1666 wp<MediaPlayerBase::AudioSink> mSink; 1667 MediaPlayerBase::AudioSink::AudioCallback mCallback; 1668 void *mCookie; 1669 void *mBuffer; 1670 size_t mBufferSize; 1671 1672 CallbackThread(const CallbackThread &); 1673 CallbackThread &operator=(const CallbackThread &); 1674}; 1675 1676CallbackThread::CallbackThread( 1677 const wp<MediaPlayerBase::AudioSink> &sink, 1678 MediaPlayerBase::AudioSink::AudioCallback cb, 1679 void *cookie) 1680 : mSink(sink), 1681 mCallback(cb), 1682 mCookie(cookie), 1683 mBuffer(NULL), 1684 mBufferSize(0) { 1685} 1686 1687CallbackThread::~CallbackThread() { 1688 if (mBuffer) { 1689 free(mBuffer); 1690 mBuffer = NULL; 1691 } 1692} 1693 1694bool CallbackThread::threadLoop() { 1695 sp<MediaPlayerBase::AudioSink> sink = mSink.promote(); 1696 if (sink == NULL) { 1697 return false; 1698 } 1699 1700 if (mBuffer == NULL) { 1701 mBufferSize = sink->bufferSize(); 1702 mBuffer = malloc(mBufferSize); 1703 } 1704 1705 size_t actualSize = 1706 (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie); 1707 1708 if (actualSize > 0) { 1709 sink->write(mBuffer, actualSize); 1710 } 1711 1712 return true; 1713} 1714 1715//////////////////////////////////////////////////////////////////////////////// 1716 1717status_t MediaPlayerService::AudioCache::open( 1718 uint32_t sampleRate, int channelCount, int format, int bufferCount, 1719 AudioCallback cb, void *cookie) 1720{ 1721 LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount); 1722 if (mHeap->getHeapID() < 0) { 1723 return NO_INIT; 1724 } 1725 1726 mSampleRate = sampleRate; 1727 mChannelCount = (uint16_t)channelCount; 1728 mFormat = (uint16_t)format; 1729 mMsecsPerFrame = 1.e3 / (float) sampleRate; 1730 1731 if (cb != NULL) { 1732 mCallbackThread = new CallbackThread(this, cb, cookie); 1733 } 1734 return NO_ERROR; 1735} 1736 1737void MediaPlayerService::AudioCache::start() { 1738 if (mCallbackThread != NULL) { 1739 mCallbackThread->run("AudioCache callback"); 1740 } 1741} 1742 1743void MediaPlayerService::AudioCache::stop() { 1744 if (mCallbackThread != NULL) { 1745 mCallbackThread->requestExitAndWait(); 1746 } 1747} 1748 1749ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size) 1750{ 1751 LOGV("write(%p, %u)", buffer, size); 1752 if ((buffer == 0) || (size == 0)) return size; 1753 1754 uint8_t* p = static_cast<uint8_t*>(mHeap->getBase()); 1755 if (p == NULL) return NO_INIT; 1756 p += mSize; 1757 LOGV("memcpy(%p, %p, %u)", p, buffer, size); 1758 if (mSize + size > mHeap->getSize()) { 1759 LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize()); 1760 size = mHeap->getSize() - mSize; 1761 } 1762 memcpy(p, buffer, size); 1763 mSize += size; 1764 return size; 1765} 1766 1767// call with lock held 1768status_t MediaPlayerService::AudioCache::wait() 1769{ 1770 Mutex::Autolock lock(mLock); 1771 while (!mCommandComplete) { 1772 mSignal.wait(mLock); 1773 } 1774 mCommandComplete = false; 1775 1776 if (mError == NO_ERROR) { 1777 LOGV("wait - success"); 1778 } else { 1779 LOGV("wait - error"); 1780 } 1781 return mError; 1782} 1783 1784void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2) 1785{ 1786 LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2); 1787 AudioCache* p = static_cast<AudioCache*>(cookie); 1788 1789 // ignore buffering messages 1790 switch (msg) 1791 { 1792 case MEDIA_ERROR: 1793 LOGE("Error %d, %d occurred", ext1, ext2); 1794 p->mError = ext1; 1795 break; 1796 case MEDIA_PREPARED: 1797 LOGV("prepared"); 1798 break; 1799 case MEDIA_PLAYBACK_COMPLETE: 1800 LOGV("playback complete"); 1801 break; 1802 default: 1803 LOGV("ignored"); 1804 return; 1805 } 1806 1807 // wake up thread 1808 Mutex::Autolock lock(mLock); 1809 p->mCommandComplete = true; 1810 p->mSignal.signal(); 1811} 1812 1813} // namespace android 1814