/* ** ** Copyright 2008, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** ** http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ // Proxy for media player implementations //#define LOG_NDEBUG 0 #define LOG_TAG "MediaPlayerService" #include #include #include #include #include #include #include #include #include #include // for property_get #include #include #include #include #include #include #include // for status_t #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ActivityManager.h" #include "MediaRecorderClient.h" #include "MediaPlayerService.h" #include "MetadataRetrieverClient.h" #include "MediaPlayerFactory.h" #include "TestPlayerStub.h" #include "nuplayer/NuPlayerDriver.h" #include #include "Crypto.h" #include "Drm.h" #include "HDCP.h" #include "HTTPBase.h" #include "RemoteDisplay.h" namespace { using android::media::Metadata; using android::status_t; using android::OK; using android::BAD_VALUE; using android::NOT_ENOUGH_DATA; using android::Parcel; // Max number of entries in the filter. const int kMaxFilterSize = 64; // I pulled that out of thin air. // FIXME: Move all the metadata related function in the Metadata.cpp // Unmarshall a filter from a Parcel. // Filter format in a parcel: // // 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 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | number of entries (n) | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | metadata type 1 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | metadata type 2 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // .... // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | metadata type n | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // // @param p Parcel that should start with a filter. // @param[out] filter On exit contains the list of metadata type to be // filtered. // @param[out] status On exit contains the status code to be returned. // @return true if the parcel starts with a valid filter. bool unmarshallFilter(const Parcel& p, Metadata::Filter *filter, status_t *status) { int32_t val; if (p.readInt32(&val) != OK) { ALOGE("Failed to read filter's length"); *status = NOT_ENOUGH_DATA; return false; } if( val > kMaxFilterSize || val < 0) { ALOGE("Invalid filter len %d", val); *status = BAD_VALUE; return false; } const size_t num = val; filter->clear(); filter->setCapacity(num); size_t size = num * sizeof(Metadata::Type); if (p.dataAvail() < size) { ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail()); *status = NOT_ENOUGH_DATA; return false; } const Metadata::Type *data = static_cast(p.readInplace(size)); if (NULL == data) { ALOGE("Filter had no data"); *status = BAD_VALUE; return false; } // TODO: The stl impl of vector would be more efficient here // because it degenerates into a memcpy on pod types. Try to // replace later or use stl::set. for (size_t i = 0; i < num; ++i) { filter->add(*data); ++data; } *status = OK; return true; } // @param filter Of metadata type. // @param val To be searched. // @return true if a match was found. bool findMetadata(const Metadata::Filter& filter, const int32_t val) { // Deal with empty and ANY right away if (filter.isEmpty()) return false; if (filter[0] == Metadata::kAny) return true; return filter.indexOf(val) >= 0; } } // anonymous namespace namespace { using android::Parcel; using android::String16; // marshalling tag indicating flattened utf16 tags // keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java const int32_t kAudioAttributesMarshallTagFlattenTags = 1; // Audio attributes format in a parcel: // // 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 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | usage | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | content_type | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | source | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | flags | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | kAudioAttributesMarshallTagFlattenTags | // ignore tags if not found // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // | flattened tags in UTF16 | // | ... | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // // @param p Parcel that contains audio attributes. // @param[out] attributes On exit points to an initialized audio_attributes_t structure // @param[out] status On exit contains the status code to be returned. void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes) { attributes->usage = (audio_usage_t) parcel.readInt32(); attributes->content_type = (audio_content_type_t) parcel.readInt32(); attributes->source = (audio_source_t) parcel.readInt32(); attributes->flags = (audio_flags_mask_t) parcel.readInt32(); const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags); if (hasFlattenedTag) { // the tags are UTF16, convert to UTF8 String16 tags = parcel.readString16(); ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size()); if (realTagSize <= 0) { strcpy(attributes->tags, ""); } else { // copy the flattened string into the attributes as the destination for the conversion: // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ? AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize; utf16_to_utf8(tags.string(), tagSize, attributes->tags, sizeof(attributes->tags) / sizeof(attributes->tags[0])); } } else { ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values"); strcpy(attributes->tags, ""); } } } // anonymous namespace namespace android { extern ALooperRoster gLooperRoster; static bool checkPermission(const char* permissionString) { #ifndef HAVE_ANDROID_OS return true; #endif if (getpid() == IPCThreadState::self()->getCallingPid()) return true; bool ok = checkCallingPermission(String16(permissionString)); if (!ok) ALOGE("Request requires %s", permissionString); return ok; } // TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround /* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4; /* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false; void MediaPlayerService::instantiate() { defaultServiceManager()->addService( String16("media.player"), new MediaPlayerService()); } MediaPlayerService::MediaPlayerService() { ALOGV("MediaPlayerService created"); mNextConnId = 1; mBatteryAudio.refCount = 0; for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { mBatteryAudio.deviceOn[i] = 0; mBatteryAudio.lastTime[i] = 0; mBatteryAudio.totalTime[i] = 0; } // speaker is on by default mBatteryAudio.deviceOn[SPEAKER] = 1; // reset battery stats // if the mediaserver has crashed, battery stats could be left // in bad state, reset the state upon service start. BatteryNotifier& notifier(BatteryNotifier::getInstance()); notifier.noteResetVideo(); notifier.noteResetAudio(); MediaPlayerFactory::registerBuiltinFactories(); } MediaPlayerService::~MediaPlayerService() { ALOGV("MediaPlayerService destroyed"); } sp MediaPlayerService::createMediaRecorder(const String16 &opPackageName) { pid_t pid = IPCThreadState::self()->getCallingPid(); sp recorder = new MediaRecorderClient(this, pid, opPackageName); wp w = recorder; Mutex::Autolock lock(mLock); mMediaRecorderClients.add(w); ALOGV("Create new media recorder client from pid %d", pid); return recorder; } void MediaPlayerService::removeMediaRecorderClient(wp client) { Mutex::Autolock lock(mLock); mMediaRecorderClients.remove(client); ALOGV("Delete media recorder client"); } sp MediaPlayerService::createMetadataRetriever() { pid_t pid = IPCThreadState::self()->getCallingPid(); sp retriever = new MetadataRetrieverClient(pid); ALOGV("Create new media retriever from pid %d", pid); return retriever; } sp MediaPlayerService::create(const sp& client, int audioSessionId) { pid_t pid = IPCThreadState::self()->getCallingPid(); int32_t connId = android_atomic_inc(&mNextConnId); sp c = new Client( this, pid, connId, client, audioSessionId, IPCThreadState::self()->getCallingUid()); ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid, IPCThreadState::self()->getCallingUid()); wp w = c; { Mutex::Autolock lock(mLock); mClients.add(w); } return c; } sp MediaPlayerService::getCodecList() const { return MediaCodecList::getLocalInstance(); } sp MediaPlayerService::getOMX() { Mutex::Autolock autoLock(mLock); if (mOMX.get() == NULL) { mOMX = new OMX; } return mOMX; } sp MediaPlayerService::makeCrypto() { return new Crypto; } sp MediaPlayerService::makeDrm() { return new Drm; } sp MediaPlayerService::makeHDCP(bool createEncryptionModule) { return new HDCP(createEncryptionModule); } sp MediaPlayerService::listenForRemoteDisplay( const String16 &opPackageName, const sp& client, const String8& iface) { if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) { return NULL; } return new RemoteDisplay(opPackageName, client, iface.string()); } status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector& args) const { const size_t SIZE = 256; char buffer[SIZE]; String8 result; result.append(" AudioOutput\n"); snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n", mStreamType, mLeftVolume, mRightVolume); result.append(buffer); snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n", mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1); result.append(buffer); snprintf(buffer, 255, " aux effect id(%d), send level (%f)\n", mAuxEffectId, mSendLevel); result.append(buffer); ::write(fd, result.string(), result.size()); if (mTrack != 0) { mTrack->dump(fd, args); } return NO_ERROR; } status_t MediaPlayerService::Client::dump(int fd, const Vector& args) { const size_t SIZE = 256; char buffer[SIZE]; String8 result; result.append(" Client\n"); snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n", mPid, mConnId, mStatus, mLoop?"true": "false"); result.append(buffer); write(fd, result.string(), result.size()); if (mPlayer != NULL) { mPlayer->dump(fd, args); } if (mAudioOutput != 0) { mAudioOutput->dump(fd, args); } write(fd, "\n", 1); return NO_ERROR; } /** * The only arguments this understands right now are -c, -von and -voff, * which are parsed by ALooperRoster::dump() */ status_t MediaPlayerService::dump(int fd, const Vector& args) { const size_t SIZE = 256; char buffer[SIZE]; String8 result; SortedVector< sp > clients; //to serialise the mutex unlock & client destruction. SortedVector< sp > mediaRecorderClients; if (checkCallingPermission(String16("android.permission.DUMP")) == false) { snprintf(buffer, SIZE, "Permission Denial: " "can't dump MediaPlayerService from pid=%d, uid=%d\n", IPCThreadState::self()->getCallingPid(), IPCThreadState::self()->getCallingUid()); result.append(buffer); } else { Mutex::Autolock lock(mLock); for (int i = 0, n = mClients.size(); i < n; ++i) { sp c = mClients[i].promote(); if (c != 0) c->dump(fd, args); clients.add(c); } if (mMediaRecorderClients.size() == 0) { result.append(" No media recorder client\n\n"); } else { for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) { sp c = mMediaRecorderClients[i].promote(); if (c != 0) { snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid); result.append(buffer); write(fd, result.string(), result.size()); result = "\n"; c->dump(fd, args); mediaRecorderClients.add(c); } } } result.append(" Files opened and/or mapped:\n"); snprintf(buffer, SIZE, "/proc/%d/maps", getpid()); FILE *f = fopen(buffer, "r"); if (f) { while (!feof(f)) { fgets(buffer, SIZE, f); if (strstr(buffer, " /storage/") || strstr(buffer, " /system/sounds/") || strstr(buffer, " /data/") || strstr(buffer, " /system/media/")) { result.append(" "); result.append(buffer); } } fclose(f); } else { result.append("couldn't open "); result.append(buffer); result.append("\n"); } snprintf(buffer, SIZE, "/proc/%d/fd", getpid()); DIR *d = opendir(buffer); if (d) { struct dirent *ent; while((ent = readdir(d)) != NULL) { if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) { snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name); struct stat s; if (lstat(buffer, &s) == 0) { if ((s.st_mode & S_IFMT) == S_IFLNK) { char linkto[256]; int len = readlink(buffer, linkto, sizeof(linkto)); if(len > 0) { if(len > 255) { linkto[252] = '.'; linkto[253] = '.'; linkto[254] = '.'; linkto[255] = 0; } else { linkto[len] = 0; } if (strstr(linkto, "/storage/") == linkto || strstr(linkto, "/system/sounds/") == linkto || strstr(linkto, "/data/") == linkto || strstr(linkto, "/system/media/") == linkto) { result.append(" "); result.append(buffer); result.append(" -> "); result.append(linkto); result.append("\n"); } } } else { result.append(" unexpected type for "); result.append(buffer); result.append("\n"); } } } } closedir(d); } else { result.append("couldn't open "); result.append(buffer); result.append("\n"); } gLooperRoster.dump(fd, args); bool dumpMem = false; for (size_t i = 0; i < args.size(); i++) { if (args[i] == String16("-m")) { dumpMem = true; } } if (dumpMem) { dumpMemoryAddresses(fd); } } write(fd, result.string(), result.size()); return NO_ERROR; } void MediaPlayerService::removeClient(wp client) { Mutex::Autolock lock(mLock); mClients.remove(client); } bool MediaPlayerService::hasClient(wp client) { Mutex::Autolock lock(mLock); return mClients.indexOf(client) != NAME_NOT_FOUND; } MediaPlayerService::Client::Client( const sp& service, pid_t pid, int32_t connId, const sp& client, int audioSessionId, uid_t uid) { ALOGV("Client(%d) constructor", connId); mPid = pid; mConnId = connId; mService = service; mClient = client; mLoop = false; mStatus = NO_INIT; mAudioSessionId = audioSessionId; mUID = uid; mRetransmitEndpointValid = false; mAudioAttributes = NULL; #if CALLBACK_ANTAGONIZER ALOGD("create Antagonizer"); mAntagonizer = new Antagonizer(notify, this); #endif } MediaPlayerService::Client::~Client() { ALOGV("Client(%d) destructor pid = %d", mConnId, mPid); mAudioOutput.clear(); wp client(this); disconnect(); mService->removeClient(client); if (mAudioAttributes != NULL) { free(mAudioAttributes); } } void MediaPlayerService::Client::disconnect() { ALOGV("disconnect(%d) from pid %d", mConnId, mPid); // grab local reference and clear main reference to prevent future // access to object sp p; { Mutex::Autolock l(mLock); p = mPlayer; mClient.clear(); } mPlayer.clear(); // clear the notification to prevent callbacks to dead client // and reset the player. We assume the player will serialize // access to itself if necessary. if (p != 0) { p->setNotifyCallback(0, 0); #if CALLBACK_ANTAGONIZER ALOGD("kill Antagonizer"); mAntagonizer->kill(); #endif p->reset(); } disconnectNativeWindow(); IPCThreadState::self()->flushCommands(); } sp MediaPlayerService::Client::createPlayer(player_type playerType) { // determine if we have the right player type sp p = mPlayer; if ((p != NULL) && (p->playerType() != playerType)) { ALOGV("delete player"); p.clear(); } if (p == NULL) { p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid); } if (p != NULL) { p->setUID(mUID); } return p; } sp MediaPlayerService::Client::setDataSource_pre( player_type playerType) { ALOGV("player type = %d", playerType); // create the right type of player sp p = createPlayer(playerType); if (p == NULL) { return p; } if (!p->hardwareOutput()) { Mutex::Autolock l(mLock); mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(), mPid, mAudioAttributes); static_cast(p.get())->setAudioSink(mAudioOutput); } return p; } void MediaPlayerService::Client::setDataSource_post( const sp& p, status_t status) { ALOGV(" setDataSource"); mStatus = status; if (mStatus != OK) { ALOGE(" error: %d", mStatus); return; } // Set the re-transmission endpoint if one was chosen. if (mRetransmitEndpointValid) { mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint); if (mStatus != NO_ERROR) { ALOGE("setRetransmitEndpoint error: %d", mStatus); } } if (mStatus == OK) { mPlayer = p; } } status_t MediaPlayerService::Client::setDataSource( const sp &httpService, const char *url, const KeyedVector *headers) { ALOGV("setDataSource(%s)", url); if (url == NULL) return UNKNOWN_ERROR; if ((strncmp(url, "http://", 7) == 0) || (strncmp(url, "https://", 8) == 0) || (strncmp(url, "rtsp://", 7) == 0)) { if (!checkPermission("android.permission.INTERNET")) { return PERMISSION_DENIED; } } if (strncmp(url, "content://", 10) == 0) { // get a filedescriptor for the content Uri and // pass it to the setDataSource(fd) method String16 url16(url); int fd = android::openContentProviderFile(url16); if (fd < 0) { ALOGE("Couldn't open fd for %s", url); return UNKNOWN_ERROR; } setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus close(fd); return mStatus; } else { player_type playerType = MediaPlayerFactory::getPlayerType(this, url); sp p = setDataSource_pre(playerType); if (p == NULL) { return NO_INIT; } setDataSource_post(p, p->setDataSource(httpService, url, headers)); return mStatus; } } status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length) { ALOGV("setDataSource fd=%d, offset=%" PRId64 ", length=%" PRId64 "", fd, offset, length); struct stat sb; int ret = fstat(fd, &sb); if (ret != 0) { ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); return UNKNOWN_ERROR; } ALOGV("st_dev = %" PRIu64 "", static_cast(sb.st_dev)); ALOGV("st_mode = %u", sb.st_mode); ALOGV("st_uid = %lu", static_cast(sb.st_uid)); ALOGV("st_gid = %lu", static_cast(sb.st_gid)); ALOGV("st_size = %" PRId64 "", sb.st_size); if (offset >= sb.st_size) { ALOGE("offset error"); return UNKNOWN_ERROR; } if (offset + length > sb.st_size) { length = sb.st_size - offset; ALOGV("calculated length = %" PRId64 "", length); } player_type playerType = MediaPlayerFactory::getPlayerType(this, fd, offset, length); sp p = setDataSource_pre(playerType); if (p == NULL) { return NO_INIT; } // now set data source setDataSource_post(p, p->setDataSource(fd, offset, length)); return mStatus; } status_t MediaPlayerService::Client::setDataSource( const sp &source) { // create the right type of player player_type playerType = MediaPlayerFactory::getPlayerType(this, source); sp p = setDataSource_pre(playerType); if (p == NULL) { return NO_INIT; } // now set data source setDataSource_post(p, p->setDataSource(source)); return mStatus; } status_t MediaPlayerService::Client::setDataSource( const sp &source) { sp dataSource = DataSource::CreateFromIDataSource(source); player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource); sp p = setDataSource_pre(playerType); if (p == NULL) { return NO_INIT; } // now set data source setDataSource_post(p, p->setDataSource(dataSource)); return mStatus; } void MediaPlayerService::Client::disconnectNativeWindow() { if (mConnectedWindow != NULL) { status_t err = native_window_api_disconnect(mConnectedWindow.get(), NATIVE_WINDOW_API_MEDIA); if (err != OK) { ALOGW("native_window_api_disconnect returned an error: %s (%d)", strerror(-err), err); } } mConnectedWindow.clear(); } status_t MediaPlayerService::Client::setVideoSurfaceTexture( const sp& bufferProducer) { ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get()); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; sp binder(IInterface::asBinder(bufferProducer)); if (mConnectedWindowBinder == binder) { return OK; } sp anw; if (bufferProducer != NULL) { anw = new Surface(bufferProducer, true /* controlledByApp */); status_t err = native_window_api_connect(anw.get(), NATIVE_WINDOW_API_MEDIA); if (err != OK) { ALOGE("setVideoSurfaceTexture failed: %d", err); // Note that we must do the reset before disconnecting from the ANW. // Otherwise queue/dequeue calls could be made on the disconnected // ANW, which may result in errors. reset(); disconnectNativeWindow(); return err; } } // Note that we must set the player's new GraphicBufferProducer before // disconnecting the old one. Otherwise queue/dequeue calls could be made // on the disconnected ANW, which may result in errors. status_t err = p->setVideoSurfaceTexture(bufferProducer); disconnectNativeWindow(); mConnectedWindow = anw; if (err == OK) { mConnectedWindowBinder = binder; } else { disconnectNativeWindow(); } return err; } status_t MediaPlayerService::Client::invoke(const Parcel& request, Parcel *reply) { sp p = getPlayer(); if (p == NULL) return UNKNOWN_ERROR; return p->invoke(request, reply); } // This call doesn't need to access the native player. status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter) { status_t status; media::Metadata::Filter allow, drop; if (unmarshallFilter(filter, &allow, &status) && unmarshallFilter(filter, &drop, &status)) { Mutex::Autolock lock(mLock); mMetadataAllow = allow; mMetadataDrop = drop; } return status; } status_t MediaPlayerService::Client::getMetadata( bool update_only, bool /*apply_filter*/, Parcel *reply) { sp player = getPlayer(); if (player == 0) return UNKNOWN_ERROR; status_t status; // Placeholder for the return code, updated by the caller. reply->writeInt32(-1); media::Metadata::Filter ids; // We don't block notifications while we fetch the data. We clear // mMetadataUpdated first so we don't lose notifications happening // during the rest of this call. { Mutex::Autolock lock(mLock); if (update_only) { ids = mMetadataUpdated; } mMetadataUpdated.clear(); } media::Metadata metadata(reply); metadata.appendHeader(); status = player->getMetadata(ids, reply); if (status != OK) { metadata.resetParcel(); ALOGE("getMetadata failed %d", status); return status; } // FIXME: Implement filtering on the result. Not critical since // filtering takes place on the update notifications already. This // would be when all the metadata are fetch and a filter is set. // Everything is fine, update the metadata length. metadata.updateLength(); return OK; } status_t MediaPlayerService::Client::prepareAsync() { ALOGV("[%d] prepareAsync", mConnId); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; status_t ret = p->prepareAsync(); #if CALLBACK_ANTAGONIZER ALOGD("start Antagonizer"); if (ret == NO_ERROR) mAntagonizer->start(); #endif return ret; } status_t MediaPlayerService::Client::start() { ALOGV("[%d] start", mConnId); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; p->setLooping(mLoop); return p->start(); } status_t MediaPlayerService::Client::stop() { ALOGV("[%d] stop", mConnId); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->stop(); } status_t MediaPlayerService::Client::pause() { ALOGV("[%d] pause", mConnId); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->pause(); } status_t MediaPlayerService::Client::isPlaying(bool* state) { *state = false; sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; *state = p->isPlaying(); ALOGV("[%d] isPlaying: %d", mConnId, *state); return NO_ERROR; } status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate) { ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)", mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->setPlaybackSettings(rate); } status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */) { sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; status_t ret = p->getPlaybackSettings(rate); if (ret == NO_ERROR) { ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)", mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode); } else { ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret); } return ret; } status_t MediaPlayerService::Client::setSyncSettings( const AVSyncSettings& sync, float videoFpsHint) { ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)", mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->setSyncSettings(sync, videoFpsHint); } status_t MediaPlayerService::Client::getSyncSettings( AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */) { sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; status_t ret = p->getSyncSettings(sync, videoFps); if (ret == NO_ERROR) { ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)", mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps); } else { ALOGV("[%d] getSyncSettings returned %d", mConnId, ret); } return ret; } status_t MediaPlayerService::Client::getCurrentPosition(int *msec) { ALOGV("getCurrentPosition"); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; status_t ret = p->getCurrentPosition(msec); if (ret == NO_ERROR) { ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec); } else { ALOGE("getCurrentPosition returned %d", ret); } return ret; } status_t MediaPlayerService::Client::getDuration(int *msec) { ALOGV("getDuration"); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; status_t ret = p->getDuration(msec); if (ret == NO_ERROR) { ALOGV("[%d] getDuration = %d", mConnId, *msec); } else { ALOGE("getDuration returned %d", ret); } return ret; } status_t MediaPlayerService::Client::setNextPlayer(const sp& player) { ALOGV("setNextPlayer"); Mutex::Autolock l(mLock); sp c = static_cast(player.get()); if (c != NULL && !mService->hasClient(c)) { return BAD_VALUE; } mNextClient = c; if (c != NULL) { if (mAudioOutput != NULL) { mAudioOutput->setNextOutput(c->mAudioOutput); } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) { ALOGE("no current audio output"); } if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) { mPlayer->setNextPlayer(mNextClient->getPlayer()); } } return OK; } status_t MediaPlayerService::Client::seekTo(int msec) { ALOGV("[%d] seekTo(%d)", mConnId, msec); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->seekTo(msec); } status_t MediaPlayerService::Client::reset() { ALOGV("[%d] reset", mConnId); mRetransmitEndpointValid = false; sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->reset(); } status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type) { ALOGV("[%d] setAudioStreamType(%d)", mConnId, type); // TODO: for hardware output, call player instead Mutex::Autolock l(mLock); if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type); return NO_ERROR; } status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel) { if (mAudioAttributes != NULL) { free(mAudioAttributes); } mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t)); if (mAudioAttributes == NULL) { return NO_MEMORY; } unmarshallAudioAttributes(parcel, mAudioAttributes); ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s", mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags, mAudioAttributes->tags); if (mAudioOutput != 0) { mAudioOutput->setAudioAttributes(mAudioAttributes); } return NO_ERROR; } status_t MediaPlayerService::Client::setLooping(int loop) { ALOGV("[%d] setLooping(%d)", mConnId, loop); mLoop = loop; sp p = getPlayer(); if (p != 0) return p->setLooping(loop); return NO_ERROR; } status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume) { ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume); // for hardware output, call player instead sp p = getPlayer(); { Mutex::Autolock l(mLock); if (p != 0 && p->hardwareOutput()) { MediaPlayerHWInterface* hwp = reinterpret_cast(p.get()); return hwp->setVolume(leftVolume, rightVolume); } else { if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume); return NO_ERROR; } } return NO_ERROR; } status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level) { ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level); Mutex::Autolock l(mLock); if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level); return NO_ERROR; } status_t MediaPlayerService::Client::attachAuxEffect(int effectId) { ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId); Mutex::Autolock l(mLock); if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId); return NO_ERROR; } status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) { ALOGV("[%d] setParameter(%d)", mConnId, key); switch (key) { case KEY_PARAMETER_AUDIO_ATTRIBUTES: { Mutex::Autolock l(mLock); return setAudioAttributes_l(request); } default: sp p = getPlayer(); if (p == 0) { return UNKNOWN_ERROR; } return p->setParameter(key, request); } } status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) { ALOGV("[%d] getParameter(%d)", mConnId, key); sp p = getPlayer(); if (p == 0) return UNKNOWN_ERROR; return p->getParameter(key, reply); } status_t MediaPlayerService::Client::setRetransmitEndpoint( const struct sockaddr_in* endpoint) { if (NULL != endpoint) { uint32_t a = ntohl(endpoint->sin_addr.s_addr); uint16_t p = ntohs(endpoint->sin_port); ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId, (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p); } else { ALOGV("[%d] setRetransmitEndpoint = ", mConnId); } sp p = getPlayer(); // Right now, the only valid time to set a retransmit endpoint is before // player selection has been made (since the presence or absence of a // retransmit endpoint is going to determine which player is selected during // setDataSource). if (p != 0) return INVALID_OPERATION; if (NULL != endpoint) { mRetransmitEndpoint = *endpoint; mRetransmitEndpointValid = true; } else { mRetransmitEndpointValid = false; } return NO_ERROR; } status_t MediaPlayerService::Client::getRetransmitEndpoint( struct sockaddr_in* endpoint) { if (NULL == endpoint) return BAD_VALUE; sp p = getPlayer(); if (p != NULL) return p->getRetransmitEndpoint(endpoint); if (!mRetransmitEndpointValid) return NO_INIT; *endpoint = mRetransmitEndpoint; return NO_ERROR; } void MediaPlayerService::Client::notify( void* cookie, int msg, int ext1, int ext2, const Parcel *obj) { Client* client = static_cast(cookie); if (client == NULL) { return; } sp c; { Mutex::Autolock l(client->mLock); c = client->mClient; if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) { if (client->mAudioOutput != NULL) client->mAudioOutput->switchToNextOutput(); ALOGD("gapless:current track played back"); ALOGD("gapless:try to do a gapless switch to next track"); status_t ret; ret = client->mNextClient->start(); if (ret == NO_ERROR) { client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj); } else { client->mClient->notify(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN , 0, obj); ALOGW("gapless:start playback for next track failed"); } } } if (MEDIA_INFO == msg && MEDIA_INFO_METADATA_UPDATE == ext1) { const media::Metadata::Type metadata_type = ext2; if(client->shouldDropMetadata(metadata_type)) { return; } // Update the list of metadata that have changed. getMetadata // also access mMetadataUpdated and clears it. client->addNewMetadataUpdate(metadata_type); } if (c != NULL) { ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2); c->notify(msg, ext1, ext2, obj); } } bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const { Mutex::Autolock lock(mLock); if (findMetadata(mMetadataDrop, code)) { return true; } if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) { return false; } else { return true; } } void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) { Mutex::Autolock lock(mLock); if (mMetadataUpdated.indexOf(metadata_type) < 0) { mMetadataUpdated.add(metadata_type); } } status_t MediaPlayerService::Client::suspend() { ALOGV("[%d] suspend", mConnId); sp p = getPlayer(); if (p == NULL) return NO_INIT; return p->suspend(); } status_t MediaPlayerService::Client::resume() { ALOGV("[%d] resume", mConnId); sp p = getPlayer(); if (p == NULL) return NO_INIT; return p->resume(); } #if CALLBACK_ANTAGONIZER const int Antagonizer::interval = 10000; // 10 msecs Antagonizer::Antagonizer(notify_callback_f cb, void* client) : mExit(false), mActive(false), mClient(client), mCb(cb) { createThread(callbackThread, this); } void Antagonizer::kill() { Mutex::Autolock _l(mLock); mActive = false; mExit = true; mCondition.wait(mLock); } int Antagonizer::callbackThread(void* user) { ALOGD("Antagonizer started"); Antagonizer* p = reinterpret_cast(user); while (!p->mExit) { if (p->mActive) { ALOGV("send event"); p->mCb(p->mClient, 0, 0, 0); } usleep(interval); } Mutex::Autolock _l(p->mLock); p->mCondition.signal(); ALOGD("Antagonizer stopped"); return 0; } #endif #undef LOG_TAG #define LOG_TAG "AudioSink" MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid, const audio_attributes_t* attr) : mCallback(NULL), mCallbackCookie(NULL), mCallbackData(NULL), mBytesWritten(0), mStreamType(AUDIO_STREAM_MUSIC), mLeftVolume(1.0), mRightVolume(1.0), mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT), mSampleRateHz(0), mMsecsPerFrame(0), mFrameSize(0), mSessionId(sessionId), mUid(uid), mPid(pid), mSendLevel(0.0), mAuxEffectId(0), mFlags(AUDIO_OUTPUT_FLAG_NONE) { ALOGV("AudioOutput(%d)", sessionId); if (attr != NULL) { mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t)); if (mAttributes != NULL) { memcpy(mAttributes, attr, sizeof(audio_attributes_t)); mStreamType = audio_attributes_to_stream_type(attr); } } else { mAttributes = NULL; } setMinBufferCount(); mBitWidth = 16; } MediaPlayerService::AudioOutput::~AudioOutput() { close(); free(mAttributes); delete mCallbackData; } //static void MediaPlayerService::AudioOutput::setMinBufferCount() { char value[PROPERTY_VALUE_MAX]; if (property_get("ro.kernel.qemu", value, 0)) { mIsOnEmulator = true; mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator } } // static bool MediaPlayerService::AudioOutput::isOnEmulator() { setMinBufferCount(); // benign race wrt other threads return mIsOnEmulator; } // static int MediaPlayerService::AudioOutput::getMinBufferCount() { setMinBufferCount(); // benign race wrt other threads return mMinBufferCount; } ssize_t MediaPlayerService::AudioOutput::bufferSize() const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->frameCount() * mFrameSize; } ssize_t MediaPlayerService::AudioOutput::frameCount() const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->frameCount(); } ssize_t MediaPlayerService::AudioOutput::channelCount() const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->channelCount(); } ssize_t MediaPlayerService::AudioOutput::frameSize() const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mFrameSize; } uint32_t MediaPlayerService::AudioOutput::latency () const { Mutex::Autolock lock(mLock); if (mTrack == 0) return 0; return mTrack->latency(); } float MediaPlayerService::AudioOutput::msecsPerFrame() const { Mutex::Autolock lock(mLock); return mMsecsPerFrame; } status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->getPosition(position); } status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->getTimestamp(ts); } status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; *frameswritten = mBytesWritten / mFrameSize; return OK; } status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs) { Mutex::Autolock lock(mLock); if (mTrack == 0) return NO_INIT; return mTrack->setParameters(keyValuePairs); } String8 MediaPlayerService::AudioOutput::getParameters(const String8& keys) { Mutex::Autolock lock(mLock); if (mTrack == 0) return String8::empty(); return mTrack->getParameters(keys); } void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) { Mutex::Autolock lock(mLock); if (attributes == NULL) { free(mAttributes); mAttributes = NULL; } else { if (mAttributes == NULL) { mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t)); } memcpy(mAttributes, attributes, sizeof(audio_attributes_t)); mStreamType = audio_attributes_to_stream_type(attributes); } } void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType) { Mutex::Autolock lock(mLock); // do not allow direct stream type modification if attributes have been set if (mAttributes == NULL) { mStreamType = streamType; } } void MediaPlayerService::AudioOutput::deleteRecycledTrack_l() { ALOGV("deleteRecycledTrack_l"); if (mRecycledTrack != 0) { if (mCallbackData != NULL) { mCallbackData->setOutput(NULL); mCallbackData->endTrackSwitch(); } if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) { mRecycledTrack->flush(); } // An offloaded track isn't flushed because the STREAM_END is reported // slightly prematurely to allow time for the gapless track switch // but this means that if we decide not to recycle the track there // could be a small amount of residual data still playing. We leave // AudioFlinger to drain the track. mRecycledTrack.clear(); close_l(); delete mCallbackData; mCallbackData = NULL; } } void MediaPlayerService::AudioOutput::close_l() { mTrack.clear(); } status_t MediaPlayerService::AudioOutput::open( uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, audio_format_t format, int bufferCount, AudioCallback cb, void *cookie, audio_output_flags_t flags, const audio_offload_info_t *offloadInfo, bool doNotReconnect, uint32_t suggestedFrameCount) { ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask, format, bufferCount, mSessionId, flags); // offloading is only supported in callback mode for now. // offloadInfo must be present if offload flag is set if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) && ((cb == NULL) || (offloadInfo == NULL))) { return BAD_VALUE; } // compute frame count for the AudioTrack internal buffer size_t frameCount; if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) { frameCount = 0; // AudioTrack will get frame count from AudioFlinger } else { // try to estimate the buffer processing fetch size from AudioFlinger. // framesPerBuffer is approximate and generally correct, except when it's not :-). uint32_t afSampleRate; size_t afFrameCount; if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) { return NO_INIT; } if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) { return NO_INIT; } const size_t framesPerBuffer = (unsigned long long)sampleRate * afFrameCount / afSampleRate; if (bufferCount == 0) { // use suggestedFrameCount bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer; } // Check argument bufferCount against the mininum buffer count if (bufferCount != 0 && bufferCount < mMinBufferCount) { ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount); bufferCount = mMinBufferCount; } // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger // which will be the minimum size permitted. frameCount = bufferCount * framesPerBuffer; } if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) { channelMask = audio_channel_out_mask_from_count(channelCount); if (0 == channelMask) { ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount); return NO_INIT; } } Mutex::Autolock lock(mLock); mCallback = cb; mCallbackCookie = cookie; // Check whether we can recycle the track bool reuse = false; bool bothOffloaded = false; if (mRecycledTrack != 0) { // check whether we are switching between two offloaded tracks bothOffloaded = (flags & mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; // check if the existing track can be reused as-is, or if a new track needs to be created. reuse = true; if ((mCallbackData == NULL && mCallback != NULL) || (mCallbackData != NULL && mCallback == NULL)) { // recycled track uses callbacks but the caller wants to use writes, or vice versa ALOGV("can't chain callback and write"); reuse = false; } else if ((mRecycledTrack->getSampleRate() != sampleRate) || (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) { ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch", mRecycledTrack->getSampleRate(), sampleRate, mRecycledTrack->channelCount(), channelCount); reuse = false; } else if (flags != mFlags) { ALOGV("output flags differ %08x/%08x", flags, mFlags); reuse = false; } else if (mRecycledTrack->format() != format) { reuse = false; } if (bothOffloaded) { if (mBitWidth != offloadInfo->bit_width) { ALOGV("output bit width differs %d v/s %d", mBitWidth, offloadInfo->bit_width); reuse = false; } } } else { ALOGV("no track available to recycle"); } ALOGV_IF(bothOffloaded, "both tracks offloaded"); // If we can't recycle and both tracks are offloaded // we must close the previous output before opening a new one if (bothOffloaded && !reuse) { ALOGV("both offloaded and not recycling"); deleteRecycledTrack_l(); } sp t; CallbackData *newcbd = NULL; // We don't attempt to create a new track if we are recycling an // offloaded track. But, if we are recycling a non-offloaded or we // are switching where one is offloaded and one isn't then we create // the new track in advance so that we can read additional stream info if (!(reuse && bothOffloaded)) { ALOGV("creating new AudioTrack"); if (mCallback != NULL) { newcbd = new CallbackData(this); t = new AudioTrack( mStreamType, sampleRate, format, channelMask, frameCount, flags, CallbackWrapper, newcbd, 0, // notification frames mSessionId, AudioTrack::TRANSFER_CALLBACK, offloadInfo, mUid, mPid, mAttributes, doNotReconnect); } else { t = new AudioTrack( mStreamType, sampleRate, format, channelMask, frameCount, flags, NULL, // callback NULL, // user data 0, // notification frames mSessionId, AudioTrack::TRANSFER_DEFAULT, NULL, // offload info mUid, mPid, mAttributes, doNotReconnect); } if ((t == 0) || (t->initCheck() != NO_ERROR)) { ALOGE("Unable to create audio track"); delete newcbd; // t goes out of scope, so reference count drops to zero return NO_INIT; } else { // successful AudioTrack initialization implies a legacy stream type was generated // from the audio attributes mStreamType = t->streamType(); } } if (reuse) { CHECK(mRecycledTrack != NULL); if (!bothOffloaded) { if (mRecycledTrack->frameCount() != t->frameCount()) { ALOGV("framecount differs: %zu/%zu frames", mRecycledTrack->frameCount(), t->frameCount()); reuse = false; } } if (reuse) { ALOGV("chaining to next output and recycling track"); close_l(); mTrack = mRecycledTrack; mRecycledTrack.clear(); if (mCallbackData != NULL) { mCallbackData->setOutput(this); } delete newcbd; return OK; } } // we're not going to reuse the track, unblock and flush it // this was done earlier if both tracks are offloaded if (!bothOffloaded) { deleteRecycledTrack_l(); } CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL))); mCallbackData = newcbd; ALOGV("setVolume"); t->setVolume(mLeftVolume, mRightVolume); mSampleRateHz = sampleRate; mFlags = flags; mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate); mFrameSize = t->frameSize(); if (offloadInfo) { mBitWidth = offloadInfo->bit_width; } else { mBitWidth = 16; } uint32_t pos; if (t->getPosition(&pos) == OK) { mBytesWritten = uint64_t(pos) * mFrameSize; } mTrack = t; status_t res = NO_ERROR; // Note some output devices may give us a direct track even though we don't specify it. // Example: Line application b/17459982. if ((t->getFlags() & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) { res = t->setPlaybackRate(mPlaybackRate); if (res == NO_ERROR) { t->setAuxEffectSendLevel(mSendLevel); res = t->attachAuxEffect(mAuxEffectId); } } ALOGV("open() DONE status %d", res); return res; } status_t MediaPlayerService::AudioOutput::start() { ALOGV("start"); Mutex::Autolock lock(mLock); if (mCallbackData != NULL) { mCallbackData->endTrackSwitch(); } if (mTrack != 0) { mTrack->setVolume(mLeftVolume, mRightVolume); mTrack->setAuxEffectSendLevel(mSendLevel); return mTrack->start(); } return NO_INIT; } void MediaPlayerService::AudioOutput::setNextOutput(const sp& nextOutput) { Mutex::Autolock lock(mLock); mNextOutput = nextOutput; } void MediaPlayerService::AudioOutput::switchToNextOutput() { ALOGV("switchToNextOutput"); // Try to acquire the callback lock before moving track (without incurring deadlock). const unsigned kMaxSwitchTries = 100; Mutex::Autolock lock(mLock); for (unsigned tries = 0;;) { if (mTrack == 0) { return; } if (mNextOutput != NULL && mNextOutput != this) { if (mCallbackData != NULL) { // two alternative approaches #if 1 CallbackData *callbackData = mCallbackData; mLock.unlock(); // proper acquisition sequence callbackData->lock(); mLock.lock(); // Caution: it is unlikely that someone deleted our callback or changed our target if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) { // fatal if we are starved out. LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries, "switchToNextOutput() cannot obtain correct lock sequence"); callbackData->unlock(); continue; } callbackData->mSwitching = true; // begin track switch #else // tryBeginTrackSwitch() returns false if the callback has the lock. if (!mCallbackData->tryBeginTrackSwitch()) { // fatal if we are starved out. LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries, "switchToNextOutput() cannot obtain callback lock"); mLock.unlock(); usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput mLock.lock(); continue; } #endif } Mutex::Autolock nextLock(mNextOutput->mLock); // If the next output track is not NULL, then it has been // opened already for playback. // This is possible even without the next player being started, // for example, the next player could be prepared and seeked. // // Presuming it isn't advisable to force the track over. if (mNextOutput->mTrack == NULL) { ALOGD("Recycling track for gapless playback"); delete mNextOutput->mCallbackData; mNextOutput->mCallbackData = mCallbackData; mNextOutput->mRecycledTrack = mTrack; mNextOutput->mSampleRateHz = mSampleRateHz; mNextOutput->mMsecsPerFrame = mMsecsPerFrame; mNextOutput->mBytesWritten = mBytesWritten; mNextOutput->mFlags = mFlags; mNextOutput->mFrameSize = mFrameSize; mNextOutput->mBitWidth = mBitWidth; close_l(); mCallbackData = NULL; // destruction handled by mNextOutput } else { ALOGW("Ignoring gapless playback because next player has already started"); // remove track in case resource needed for future players. if (mCallbackData != NULL) { mCallbackData->endTrackSwitch(); // release lock for callbacks before close. } close_l(); } } break; } } ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking) { Mutex::Autolock lock(mLock); LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback."); //ALOGV("write(%p, %u)", buffer, size); if (mTrack != 0) { ssize_t ret = mTrack->write(buffer, size, blocking); if (ret >= 0) { mBytesWritten += ret; } return ret; } return NO_INIT; } void MediaPlayerService::AudioOutput::stop() { ALOGV("stop"); Mutex::Autolock lock(mLock); mBytesWritten = 0; if (mTrack != 0) mTrack->stop(); } void MediaPlayerService::AudioOutput::flush() { ALOGV("flush"); Mutex::Autolock lock(mLock); mBytesWritten = 0; if (mTrack != 0) mTrack->flush(); } void MediaPlayerService::AudioOutput::pause() { ALOGV("pause"); Mutex::Autolock lock(mLock); if (mTrack != 0) mTrack->pause(); } void MediaPlayerService::AudioOutput::close() { ALOGV("close"); sp track; { Mutex::Autolock lock(mLock); track = mTrack; close_l(); // clears mTrack } // destruction of the track occurs outside of mutex. } void MediaPlayerService::AudioOutput::setVolume(float left, float right) { ALOGV("setVolume(%f, %f)", left, right); Mutex::Autolock lock(mLock); mLeftVolume = left; mRightVolume = right; if (mTrack != 0) { mTrack->setVolume(left, right); } } status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate) { ALOGV("setPlaybackRate(%f %f %d %d)", rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode); Mutex::Autolock lock(mLock); if (mTrack == 0) { // remember rate so that we can set it when the track is opened mPlaybackRate = rate; return OK; } status_t res = mTrack->setPlaybackRate(rate); if (res != NO_ERROR) { return res; } // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded CHECK_GT(rate.mSpeed, 0.f); mPlaybackRate = rate; if (mSampleRateHz != 0) { mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz); } return res; } status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate) { ALOGV("setPlaybackRate"); Mutex::Autolock lock(mLock); if (mTrack == 0) { return NO_INIT; } *rate = mTrack->getPlaybackRate(); return NO_ERROR; } status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level) { ALOGV("setAuxEffectSendLevel(%f)", level); Mutex::Autolock lock(mLock); mSendLevel = level; if (mTrack != 0) { return mTrack->setAuxEffectSendLevel(level); } return NO_ERROR; } status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId) { ALOGV("attachAuxEffect(%d)", effectId); Mutex::Autolock lock(mLock); mAuxEffectId = effectId; if (mTrack != 0) { return mTrack->attachAuxEffect(effectId); } return NO_ERROR; } // static void MediaPlayerService::AudioOutput::CallbackWrapper( int event, void *cookie, void *info) { //ALOGV("callbackwrapper"); CallbackData *data = (CallbackData*)cookie; // lock to ensure we aren't caught in the middle of a track switch. data->lock(); AudioOutput *me = data->getOutput(); AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; if (me == NULL) { // no output set, likely because the track was scheduled to be reused // by another player, but the format turned out to be incompatible. data->unlock(); if (buffer != NULL) { buffer->size = 0; } return; } switch(event) { case AudioTrack::EVENT_MORE_DATA: { size_t actualSize = (*me->mCallback)( me, buffer->raw, buffer->size, me->mCallbackCookie, CB_EVENT_FILL_BUFFER); // Log when no data is returned from the callback. // (1) We may have no data (especially with network streaming sources). // (2) We may have reached the EOS and the audio track is not stopped yet. // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS. // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill). // // This is a benign busy-wait, with the next data request generated 10 ms or more later; // nevertheless for power reasons, we don't want to see too many of these. ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned"); me->mBytesWritten += actualSize; // benign race with reader. buffer->size = actualSize; } break; case AudioTrack::EVENT_STREAM_END: // currently only occurs for offloaded callbacks ALOGV("callbackwrapper: deliver EVENT_STREAM_END"); (*me->mCallback)(me, NULL /* buffer */, 0 /* size */, me->mCallbackCookie, CB_EVENT_STREAM_END); break; case AudioTrack::EVENT_NEW_IAUDIOTRACK : ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN"); (*me->mCallback)(me, NULL /* buffer */, 0 /* size */, me->mCallbackCookie, CB_EVENT_TEAR_DOWN); break; case AudioTrack::EVENT_UNDERRUN: // This occurs when there is no data available, typically // when there is a failure to supply data to the AudioTrack. It can also // occur in non-offloaded mode when the audio device comes out of standby. // // If an AudioTrack underruns it outputs silence. Since this happens suddenly // it may sound like an audible pop or glitch. // // The underrun event is sent once per track underrun; the condition is reset // when more data is sent to the AudioTrack. ALOGI("callbackwrapper: EVENT_UNDERRUN (discarded)"); break; default: ALOGE("received unknown event type: %d inside CallbackWrapper !", event); } data->unlock(); } int MediaPlayerService::AudioOutput::getSessionId() const { Mutex::Autolock lock(mLock); return mSessionId; } uint32_t MediaPlayerService::AudioOutput::getSampleRate() const { Mutex::Autolock lock(mLock); if (mTrack == 0) return 0; return mTrack->getSampleRate(); } //////////////////////////////////////////////////////////////////////////////// struct CallbackThread : public Thread { CallbackThread(const wp &sink, MediaPlayerBase::AudioSink::AudioCallback cb, void *cookie); protected: virtual ~CallbackThread(); virtual bool threadLoop(); private: wp mSink; MediaPlayerBase::AudioSink::AudioCallback mCallback; void *mCookie; void *mBuffer; size_t mBufferSize; CallbackThread(const CallbackThread &); CallbackThread &operator=(const CallbackThread &); }; CallbackThread::CallbackThread( const wp &sink, MediaPlayerBase::AudioSink::AudioCallback cb, void *cookie) : mSink(sink), mCallback(cb), mCookie(cookie), mBuffer(NULL), mBufferSize(0) { } CallbackThread::~CallbackThread() { if (mBuffer) { free(mBuffer); mBuffer = NULL; } } bool CallbackThread::threadLoop() { sp sink = mSink.promote(); if (sink == NULL) { return false; } if (mBuffer == NULL) { mBufferSize = sink->bufferSize(); mBuffer = malloc(mBufferSize); CHECK(mBuffer != NULL); } size_t actualSize = (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie, MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER); if (actualSize > 0) { sink->write(mBuffer, actualSize); // Could return false on sink->write() error or short count. // Not necessarily appropriate but would work for AudioCache behavior. } return true; } //////////////////////////////////////////////////////////////////////////////// void MediaPlayerService::addBatteryData(uint32_t params) { Mutex::Autolock lock(mLock); int32_t time = systemTime() / 1000000L; // change audio output devices. This notification comes from AudioFlinger if ((params & kBatteryDataSpeakerOn) || (params & kBatteryDataOtherAudioDeviceOn)) { int deviceOn[NUM_AUDIO_DEVICES]; for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { deviceOn[i] = 0; } if ((params & kBatteryDataSpeakerOn) && (params & kBatteryDataOtherAudioDeviceOn)) { deviceOn[SPEAKER_AND_OTHER] = 1; } else if (params & kBatteryDataSpeakerOn) { deviceOn[SPEAKER] = 1; } else { deviceOn[OTHER_AUDIO_DEVICE] = 1; } for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { if (mBatteryAudio.deviceOn[i] != deviceOn[i]){ if (mBatteryAudio.refCount > 0) { // if playing audio if (!deviceOn[i]) { mBatteryAudio.lastTime[i] += time; mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i]; mBatteryAudio.lastTime[i] = 0; } else { mBatteryAudio.lastTime[i] = 0 - time; } } mBatteryAudio.deviceOn[i] = deviceOn[i]; } } return; } // an audio stream is started if (params & kBatteryDataAudioFlingerStart) { // record the start time only if currently no other audio // is being played if (mBatteryAudio.refCount == 0) { for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { if (mBatteryAudio.deviceOn[i]) { mBatteryAudio.lastTime[i] -= time; } } } mBatteryAudio.refCount ++; return; } else if (params & kBatteryDataAudioFlingerStop) { if (mBatteryAudio.refCount <= 0) { ALOGW("Battery track warning: refCount is <= 0"); return; } // record the stop time only if currently this is the only // audio being played if (mBatteryAudio.refCount == 1) { for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { if (mBatteryAudio.deviceOn[i]) { mBatteryAudio.lastTime[i] += time; mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i]; mBatteryAudio.lastTime[i] = 0; } } } mBatteryAudio.refCount --; return; } int uid = IPCThreadState::self()->getCallingUid(); if (uid == AID_MEDIA) { return; } int index = mBatteryData.indexOfKey(uid); if (index < 0) { // create a new entry for this UID BatteryUsageInfo info; info.audioTotalTime = 0; info.videoTotalTime = 0; info.audioLastTime = 0; info.videoLastTime = 0; info.refCount = 0; if (mBatteryData.add(uid, info) == NO_MEMORY) { ALOGE("Battery track error: no memory for new app"); return; } } BatteryUsageInfo &info = mBatteryData.editValueFor(uid); if (params & kBatteryDataCodecStarted) { if (params & kBatteryDataTrackAudio) { info.audioLastTime -= time; info.refCount ++; } if (params & kBatteryDataTrackVideo) { info.videoLastTime -= time; info.refCount ++; } } else { if (info.refCount == 0) { ALOGW("Battery track warning: refCount is already 0"); return; } else if (info.refCount < 0) { ALOGE("Battery track error: refCount < 0"); mBatteryData.removeItem(uid); return; } if (params & kBatteryDataTrackAudio) { info.audioLastTime += time; info.refCount --; } if (params & kBatteryDataTrackVideo) { info.videoLastTime += time; info.refCount --; } // no stream is being played by this UID if (info.refCount == 0) { info.audioTotalTime += info.audioLastTime; info.audioLastTime = 0; info.videoTotalTime += info.videoLastTime; info.videoLastTime = 0; } } } status_t MediaPlayerService::pullBatteryData(Parcel* reply) { Mutex::Autolock lock(mLock); // audio output devices usage int32_t time = systemTime() / 1000000L; //in ms int32_t totalTime; for (int i = 0; i < NUM_AUDIO_DEVICES; i++) { totalTime = mBatteryAudio.totalTime[i]; if (mBatteryAudio.deviceOn[i] && (mBatteryAudio.lastTime[i] != 0)) { int32_t tmpTime = mBatteryAudio.lastTime[i] + time; totalTime += tmpTime; } reply->writeInt32(totalTime); // reset the total time mBatteryAudio.totalTime[i] = 0; } // codec usage BatteryUsageInfo info; int size = mBatteryData.size(); reply->writeInt32(size); int i = 0; while (i < size) { info = mBatteryData.valueAt(i); reply->writeInt32(mBatteryData.keyAt(i)); //UID reply->writeInt32(info.audioTotalTime); reply->writeInt32(info.videoTotalTime); info.audioTotalTime = 0; info.videoTotalTime = 0; // remove the UID entry where no stream is being played if (info.refCount <= 0) { mBatteryData.removeItemsAt(i); size --; i --; } i++; } return NO_ERROR; } } // namespace android