diff --git a/media/libaudiofoundation/AudioContainers.cpp b/media/libaudiofoundation/AudioContainers.cpp
index adc5d40..1bfe3f9 100644
--- a/media/libaudiofoundation/AudioContainers.cpp
+++ b/media/libaudiofoundation/AudioContainers.cpp
@@ -50,6 +50,10 @@
 }
 
 bool deviceTypesToString(const DeviceTypeSet &deviceTypes, std::string &str) {
+    if (deviceTypes.empty()) {
+        str = "Empty device types";
+        return true;
+    }
     bool ret = true;
     for (auto it = deviceTypes.begin(); it != deviceTypes.end();) {
         std::string deviceTypeStr;
@@ -83,4 +87,10 @@
     return ret;
 }
 
+std::string toString(const DeviceTypeSet& deviceTypes) {
+    std::string ret;
+    deviceTypesToString(deviceTypes, ret);
+    return ret;
+}
+
 } // namespace android
diff --git a/media/libaudiofoundation/AudioDeviceTypeAddr.cpp b/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
index 3e43ead..d390467 100644
--- a/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
+++ b/media/libaudiofoundation/AudioDeviceTypeAddr.cpp
@@ -26,6 +26,11 @@
     return mType == other.mType && mAddress == other.mAddress;
 }
 
+void AudioDeviceTypeAddr::reset() {
+    mType = AUDIO_DEVICE_NONE;
+    mAddress = "";
+}
+
 status_t AudioDeviceTypeAddr::readFromParcel(const Parcel *parcel) {
     status_t status;
     if ((status = parcel->readUint32(&mType)) != NO_ERROR) return status;
@@ -40,4 +45,13 @@
     return status;
 }
 
+
+DeviceTypeSet getAudioDeviceTypes(const AudioDeviceTypeAddrVector& deviceTypeAddrs) {
+    DeviceTypeSet deviceTypes;
+    for (const auto& deviceTypeAddr : deviceTypeAddrs) {
+        deviceTypes.insert(deviceTypeAddr.mType);
+    }
+    return deviceTypes;
+}
+
 }
\ No newline at end of file
diff --git a/media/libaudiofoundation/DeviceDescriptorBase.cpp b/media/libaudiofoundation/DeviceDescriptorBase.cpp
index 8933002..f01ac83 100644
--- a/media/libaudiofoundation/DeviceDescriptorBase.cpp
+++ b/media/libaudiofoundation/DeviceDescriptorBase.cpp
@@ -137,4 +137,25 @@
     return status;
 }
 
+std::string toString(const DeviceDescriptorBaseVector& devices)
+{
+    std::string ret;
+    for (const auto& device : devices) {
+        if (device != *devices.begin()) {
+            ret += ";";
+        }
+        ret += device->toString();
+    }
+    return ret;
+}
+
+AudioDeviceTypeAddrVector deviceTypeAddrsFromDescriptors(const DeviceDescriptorBaseVector& devices)
+{
+    AudioDeviceTypeAddrVector deviceTypeAddrs;
+    for (const auto& device : devices) {
+        deviceTypeAddrs.push_back(device->getDeviceTypeAddr());
+    }
+    return deviceTypeAddrs;
+}
+
 } // namespace android
diff --git a/media/libaudiofoundation/include/media/AudioContainers.h b/media/libaudiofoundation/include/media/AudioContainers.h
index 05e68fa..2a3385b 100644
--- a/media/libaudiofoundation/include/media/AudioContainers.h
+++ b/media/libaudiofoundation/include/media/AudioContainers.h
@@ -123,5 +123,10 @@
 
 std::string dumpDeviceTypes(const DeviceTypeSet& deviceTypes);
 
+/**
+ * Return human readable string for device types.
+ */
+std::string toString(const DeviceTypeSet& deviceTypes);
+
 
 } // namespace android
\ No newline at end of file
diff --git a/media/libaudiofoundation/include/media/AudioDeviceTypeAddr.h b/media/libaudiofoundation/include/media/AudioDeviceTypeAddr.h
index 392a355..5e5e762 100644
--- a/media/libaudiofoundation/include/media/AudioDeviceTypeAddr.h
+++ b/media/libaudiofoundation/include/media/AudioDeviceTypeAddr.h
@@ -17,9 +17,11 @@
 #pragma once
 
 #include <string>
+#include <vector>
 
 #include <binder/Parcelable.h>
 #include <binder/Parcel.h>
+#include <media/AudioContainers.h>
 #include <system/audio.h>
 #include <utils/Errors.h>
 
@@ -35,6 +37,8 @@
 
     bool equals(const AudioDeviceTypeAddr& other) const;
 
+    void reset();
+
     status_t readFromParcel(const Parcel *parcel) override;
 
     status_t writeToParcel(Parcel *parcel) const override;
@@ -43,4 +47,11 @@
     std::string mAddress;
 };
 
+using AudioDeviceTypeAddrVector = std::vector<AudioDeviceTypeAddr>;
+
+/**
+ * Return a collection of audio device types from a collection of AudioDeviceTypeAddr
+ */
+DeviceTypeSet getAudioDeviceTypes(const AudioDeviceTypeAddrVector& deviceTypeAddrs);
+
 }
diff --git a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
index 5a60502..5641ff1 100644
--- a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
+++ b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
@@ -16,8 +16,11 @@
 
 #pragma once
 
+#include <vector>
+
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
+#include <media/AudioContainers.h>
 #include <media/AudioPort.h>
 #include <media/AudioDeviceTypeAddr.h>
 #include <utils/Errors.h>
@@ -64,4 +67,17 @@
     AudioDeviceTypeAddr mDeviceTypeAddr;
 };
 
+using DeviceDescriptorBaseVector = std::vector<sp<DeviceDescriptorBase>>;
+
+/**
+ * Return human readable string for collection of DeviceDescriptorBase.
+ * For a DeviceDescriptorBase, it contains port id, audio device type and address.
+ */
+std::string toString(const DeviceDescriptorBaseVector& devices);
+
+/**
+ * Return a set of device types and addresses from collection of DeviceDescriptorBase.
+ */
+AudioDeviceTypeAddrVector deviceTypeAddrsFromDescriptors(const DeviceDescriptorBaseVector& devices);
+
 } // namespace android
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 7015c4e..e722995 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1357,6 +1357,13 @@
     }
 }
 
+void AudioFlinger::updateOutDevicesForRecordThreads_l(const DeviceDescriptorBaseVector& devices)
+{
+    for (size_t i = 0; i < mRecordThreads.size(); i++) {
+        mRecordThreads.valueAt(i)->updateOutDevices(devices);
+    }
+}
+
 // forwardAudioHwSyncToDownstreamPatches_l() must be called with AudioFlinger::mLock held
 void AudioFlinger::forwardParametersToDownstreamPatches_l(
         audio_io_handle_t upStream, const String8& keyValuePairs,
@@ -2361,8 +2368,7 @@
     if (status == NO_ERROR) {
         if (flags & AUDIO_OUTPUT_FLAG_MMAP_NOIRQ) {
             sp<MmapPlaybackThread> thread =
-                    new MmapPlaybackThread(this, *output, outHwDev, outputStream,
-                                           deviceType, AUDIO_DEVICE_NONE, mSystemReady);
+                    new MmapPlaybackThread(this, *output, outHwDev, outputStream, mSystemReady);
             mMmapThreads.add(*output, thread);
             ALOGV("openOutput_l() created mmap playback thread: ID %d thread %p",
                   *output, thread.get());
@@ -2370,18 +2376,17 @@
         } else {
             sp<PlaybackThread> thread;
             if (flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) {
-                thread = new OffloadThread(this, outputStream, *output, deviceType, mSystemReady);
+                thread = new OffloadThread(this, outputStream, *output, mSystemReady);
                 ALOGV("openOutput_l() created offload output: ID %d thread %p",
                       *output, thread.get());
             } else if ((flags & AUDIO_OUTPUT_FLAG_DIRECT)
                     || !isValidPcmSinkFormat(config->format)
                     || !isValidPcmSinkChannelMask(config->channel_mask)) {
-                thread = new DirectOutputThread(
-                        this, outputStream, *output, deviceType, mSystemReady);
+                thread = new DirectOutputThread(this, outputStream, *output, mSystemReady);
                 ALOGV("openOutput_l() created direct output: ID %d thread %p",
                       *output, thread.get());
             } else {
-                thread = new MixerThread(this, outputStream, *output, deviceType, mSystemReady);
+                thread = new MixerThread(this, outputStream, *output, mSystemReady);
                 ALOGV("openOutput_l() created mixer output: ID %d thread %p",
                       *output, thread.get());
             }
@@ -2689,9 +2694,7 @@
         AudioStreamIn *inputStream = new AudioStreamIn(inHwDev, inStream, flags);
         if ((flags & AUDIO_INPUT_FLAG_MMAP_NOIRQ) != 0) {
             sp<MmapCaptureThread> thread =
-                    new MmapCaptureThread(this, *input,
-                                          inHwDev, inputStream,
-                                          primaryOutputDevice_l(), devices, mSystemReady);
+                    new MmapCaptureThread(this, *input, inHwDev, inputStream, mSystemReady);
             mMmapThreads.add(*input, thread);
             ALOGV("openInput_l() created mmap capture thread: ID %d thread %p", *input,
                     thread.get());
@@ -2700,13 +2703,7 @@
             // Start record thread
             // RecordThread requires both input and output device indication to forward to audio
             // pre processing modules
-            sp<RecordThread> thread = new RecordThread(this,
-                                      inputStream,
-                                      *input,
-                                      primaryOutputDevice_l(),
-                                      devices,
-                                      mSystemReady
-                                      );
+            sp<RecordThread> thread = new RecordThread(this, inputStream, *input, mSystemReady);
             mRecordThreads.add(*input, thread);
             ALOGV("openInput_l() created record thread: ID %d thread %p", *input, thread.get());
             return thread;
@@ -3122,15 +3119,15 @@
     return NULL;
 }
 
-audio_devices_t AudioFlinger::primaryOutputDevice_l() const
+DeviceTypeSet AudioFlinger::primaryOutputDevice_l() const
 {
     PlaybackThread *thread = primaryPlaybackThread_l();
 
     if (thread == NULL) {
-        return 0;
+        return DeviceTypeSet();
     }
 
-    return thread->outDevice();
+    return thread->outDeviceTypes();
 }
 
 AudioFlinger::PlaybackThread *AudioFlinger::fastPlaybackThread_l() const
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 80254e3..29d6ec6 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -65,7 +65,10 @@
 #include <media/audiohal/EffectBufferHalInterface.h>
 #include <media/audiohal/StreamHalInterface.h>
 #include <media/AudioBufferProvider.h>
+#include <media/AudioContainers.h>
+#include <media/AudioDeviceTypeAddr.h>
 #include <media/AudioMixer.h>
+#include <media/DeviceDescriptorBase.h>
 #include <media/ExtendedAudioBufferProvider.h>
 #include <media/LinearMap.h>
 #include <media/VolumeShaper.h>
@@ -716,7 +719,7 @@
 
               // return thread associated with primary hardware device, or NULL
               PlaybackThread *primaryPlaybackThread_l() const;
-              audio_devices_t primaryOutputDevice_l() const;
+              DeviceTypeSet primaryOutputDevice_l() const;
 
               // return the playback thread with smallest HAL buffer size, and prefer fast
               PlaybackThread *fastPlaybackThread_l() const;
@@ -750,6 +753,7 @@
                 std::vector< sp<EffectModule> > purgeStaleEffects_l();
 
                 void broacastParametersToRecordThreads_l(const String8& keyValuePairs);
+                void updateOutDevicesForRecordThreads_l(const DeviceDescriptorBaseVector& devices);
                 void forwardParametersToDownstreamPatches_l(
                         audio_io_handle_t upStream, const String8& keyValuePairs,
                         std::function<bool(const sp<PlaybackThread>&)> useThread = nullptr);
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index 18cb53b..cb1ef7f 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -25,6 +25,7 @@
 
 #include "AudioFlinger.h"
 #include <media/AudioParameter.h>
+#include <media/DeviceDescriptorBase.h>
 #include <media/PatchBuilder.h>
 #include <mediautils/ServiceUtilities.h>
 
@@ -351,7 +352,7 @@
                 goto exit;
             }
             // limit to connections between devices and output streams
-            audio_devices_t type = AUDIO_DEVICE_NONE;
+            DeviceDescriptorBaseVector devices;
             for (unsigned int i = 0; i < patch->num_sinks; i++) {
                 if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) {
                     ALOGW("%s() invalid sink type %d for mix source",
@@ -364,7 +365,11 @@
                     status = BAD_VALUE;
                     goto exit;
                 }
-                type |= patch->sinks[i].ext.device.type;
+                sp<DeviceDescriptorBase> device = new DeviceDescriptorBase(
+                        patch->sinks[i].ext.device.type);
+                device->setAddress(patch->sinks[i].ext.device.address);
+                device->applyAudioPortConfig(&patch->sinks[i]);
+                devices.push_back(device);
             }
             sp<ThreadBase> thread =
                             mAudioFlinger.checkPlaybackThread_l(patch->sources[0].ext.mix.handle);
@@ -378,10 +383,7 @@
                 }
             }
             if (thread == mAudioFlinger.primaryPlaybackThread_l()) {
-                AudioParameter param = AudioParameter();
-                param.addInt(String8(AudioParameter::keyRouting), (int)type);
-
-                mAudioFlinger.broacastParametersToRecordThreads_l(param.toString());
+                mAudioFlinger.updateOutDevicesForRecordThreads_l(devices);
             }
 
             status = thread->sendCreateAudioPatchConfigEvent(patch, &halHandle);
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index ac892a5..59ffff1 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -29,6 +29,8 @@
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <cutils/properties.h>
+#include <media/AudioContainers.h>
+#include <media/AudioDeviceTypeAddr.h>
 #include <media/AudioParameter.h>
 #include <media/AudioResamplerPublic.h>
 #include <media/RecordBufferConverter.h>
@@ -460,7 +462,7 @@
 }
 
 AudioFlinger::ThreadBase::ThreadBase(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-        audio_devices_t outDevice, audio_devices_t inDevice, type_t type, bool systemReady)
+        type_t type, bool systemReady)
     :   Thread(false /*canCallJava*/),
         mType(type),
         mAudioFlinger(audioFlinger),
@@ -468,8 +470,7 @@
         // are set by PlaybackThread::readOutputParameters_l() or
         // RecordThread::readInputParameters_l()
         //FIXME: mStandby should be true here. Is this some kind of hack?
-        mStandby(false), mOutDevice(outDevice), mInDevice(inDevice),
-        mPrevOutDevice(AUDIO_DEVICE_NONE), mPrevInDevice(AUDIO_DEVICE_NONE),
+        mStandby(false),
         mAudioSource(AUDIO_SOURCE_DEFAULT), mId(id),
         // mName will be set by concrete (non-virtual) subclass
         mDeathRecipient(new PMDeathRecipient(this)),
@@ -646,6 +647,18 @@
     return sendConfigEvent_l(configEvent);
 }
 
+status_t AudioFlinger::ThreadBase::sendUpdateOutDeviceConfigEvent(
+        const DeviceDescriptorBaseVector& outDevices)
+{
+    if (type() != RECORD) {
+        // The update out device operation is only for record thread.
+        return INVALID_OPERATION;
+    }
+    Mutex::Autolock _l(mLock);
+    sp<ConfigEvent> configEvent = (ConfigEvent *)new UpdateOutDevicesConfigEvent(outDevices);
+    return sendConfigEvent_l(configEvent);
+}
+
 
 // post condition: mConfigEvents.isEmpty()
 void AudioFlinger::ThreadBase::processConfigEvents_l()
@@ -680,24 +693,29 @@
             }
         } break;
         case CFG_EVENT_CREATE_AUDIO_PATCH: {
-            const audio_devices_t oldDevice = getDevice();
+            const DeviceTypeSet oldDevices = getDeviceTypes();
             CreateAudioPatchConfigEventData *data =
                                             (CreateAudioPatchConfigEventData *)event->mData.get();
             event->mStatus = createAudioPatch_l(&data->mPatch, &data->mHandle);
-            const audio_devices_t newDevice = getDevice();
-            mLocalLog.log("CFG_EVENT_CREATE_AUDIO_PATCH: old device %#x (%s) new device %#x (%s)",
-                    (unsigned)oldDevice, toString(oldDevice).c_str(),
-                    (unsigned)newDevice, toString(newDevice).c_str());
+            const DeviceTypeSet newDevices = getDeviceTypes();
+            mLocalLog.log("CFG_EVENT_CREATE_AUDIO_PATCH: old device %s (%s) new device %s (%s)",
+                    dumpDeviceTypes(oldDevices).c_str(), toString(oldDevices).c_str(),
+                    dumpDeviceTypes(newDevices).c_str(), toString(newDevices).c_str());
         } break;
         case CFG_EVENT_RELEASE_AUDIO_PATCH: {
-            const audio_devices_t oldDevice = getDevice();
+            const DeviceTypeSet oldDevices = getDeviceTypes();
             ReleaseAudioPatchConfigEventData *data =
                                             (ReleaseAudioPatchConfigEventData *)event->mData.get();
             event->mStatus = releaseAudioPatch_l(data->mHandle);
-            const audio_devices_t newDevice = getDevice();
-            mLocalLog.log("CFG_EVENT_RELEASE_AUDIO_PATCH: old device %#x (%s) new device %#x (%s)",
-                    (unsigned)oldDevice, toString(oldDevice).c_str(),
-                    (unsigned)newDevice, toString(newDevice).c_str());
+            const DeviceTypeSet newDevices = getDeviceTypes();
+            mLocalLog.log("CFG_EVENT_RELEASE_AUDIO_PATCH: old device %s (%s) new device %s (%s)",
+                    dumpDeviceTypes(oldDevices).c_str(), toString(oldDevices).c_str(),
+                    dumpDeviceTypes(newDevices).c_str(), toString(newDevices).c_str());
+        } break;
+        case CFG_EVENT_UPDATE_OUT_DEVICE: {
+            UpdateOutDevicesConfigEventData *data =
+                    (UpdateOutDevicesConfigEventData *)event->mData.get();
+            updateOutDevices(data->mOutDevices);
         } break;
         default:
             ALOG_ASSERT(false, "processConfigEvents_l() unknown event type %d", event->mType);
@@ -840,8 +858,10 @@
         dprintf(fd, " none\n");
     }
     // Note: output device may be used by capture threads for effects such as AEC.
-    dprintf(fd, "  Output device: %#x (%s)\n", mOutDevice, toString(mOutDevice).c_str());
-    dprintf(fd, "  Input device: %#x (%s)\n", mInDevice, toString(mInDevice).c_str());
+    dprintf(fd, "  Output devices: %s (%s)\n",
+            dumpDeviceTypes(outDeviceTypes()).c_str(), toString(outDeviceTypes()).c_str());
+    dprintf(fd, "  Input device: %#x (%s)\n",
+            inDeviceType(), toString(inDeviceType()).c_str());
     dprintf(fd, "  Audio source: %d (%s)\n", mAudioSource, toString(mAudioSource).c_str());
 
     // Dump timestamp statistics for the Thread types that support it.
@@ -1011,6 +1031,12 @@
     mPowerManager.clear();
 }
 
+void AudioFlinger::ThreadBase::updateOutDevices(
+        const DeviceDescriptorBaseVector& outDevices __unused)
+{
+    ALOGE("%s should only be called in RecordThread", __func__);
+}
+
 void AudioFlinger::ThreadBase::PMDeathRecipient::binderDied(const wp<IBinder>& who __unused)
 {
     sp<ThreadBase> thread = mThread.promote();
@@ -1351,8 +1377,9 @@
             }
             effectCreated = true;
 
-            effect->setDevice(mOutDevice);
-            effect->setDevice(mInDevice);
+            // FIXME: use vector of device and address when effect interface is ready.
+            effect->setDevice(deviceTypesToBitMask(outDeviceTypes()));
+            effect->setDevice(inDeviceType());
             effect->setMode(mAudioFlinger->getMode());
             effect->setAudioSource(mAudioSource);
         }
@@ -1468,8 +1495,8 @@
         return status;
     }
 
-    effect->setDevice(mOutDevice);
-    effect->setDevice(mInDevice);
+    effect->setDevice(deviceTypesToBitMask(outDeviceTypes()));
+    effect->setDevice(inDeviceType());
     effect->setMode(mAudioFlinger->getMode());
     effect->setAudioSource(mAudioSource);
 
@@ -1702,8 +1729,8 @@
     item->setInt64(MM_PREFIX "channelMask", (int64_t)mChannelMask);
     item->setCString(MM_PREFIX "encoding", toString(mFormat).c_str());
     item->setInt32(MM_PREFIX "frameCount", (int32_t)mFrameCount);
-    item->setCString(MM_PREFIX "outDevice", toString(mOutDevice).c_str());
-    item->setCString(MM_PREFIX "inDevice", toString(mInDevice).c_str());
+    item->setCString(MM_PREFIX "outDevice", toString(outDeviceTypes()).c_str());
+    item->setCString(MM_PREFIX "inDevice", toString(inDeviceType()).c_str());
 
     // thread statistics
     if (mIoJitterMs.getN() > 0) {
@@ -1734,10 +1761,9 @@
 AudioFlinger::PlaybackThread::PlaybackThread(const sp<AudioFlinger>& audioFlinger,
                                              AudioStreamOut* output,
                                              audio_io_handle_t id,
-                                             audio_devices_t device,
                                              type_t type,
                                              bool systemReady)
-    :   ThreadBase(audioFlinger, id, device, AUDIO_DEVICE_NONE, type, systemReady),
+    :   ThreadBase(audioFlinger, id, type, systemReady),
         mNormalFrameCount(0), mSinkBuffer(NULL),
         mMixerBufferEnabled(AudioFlinger::kEnableExtendedPrecision),
         mMixerBuffer(NULL),
@@ -1800,8 +1826,9 @@
     // TODO: We may also match on address as well as device type for
     // AUDIO_DEVICE_OUT_BUS, AUDIO_DEVICE_OUT_ALL_A2DP, AUDIO_DEVICE_OUT_REMOTE_SUBMIX
     if (type == MIXER || type == DIRECT) {
-        mTimestampCorrectedDevices = (audio_devices_t)property_get_int64(
-                "audio.timestamp.corrected_output_devices",
+        // TODO: This property should be ensure that only contains one single device type.
+        mTimestampCorrectedDevice = (audio_devices_t)property_get_int64(
+                "audio.timestamp.corrected_output_device",
                 (int64_t)(mIsMsdDevice ? AUDIO_DEVICE_OUT_BUS // turn on by default for MSD
                                        : AUDIO_DEVICE_NONE));
     }
@@ -2891,7 +2918,7 @@
 {
     if (!mMasterMute) {
         char value[PROPERTY_VALUE_MAX];
-        if (mOutDevice == AUDIO_DEVICE_OUT_REMOTE_SUBMIX) {
+        if (isSingleDeviceType(outDeviceTypes(), AUDIO_DEVICE_OUT_REMOTE_SUBMIX)) {
             ALOGD("ro.audio.silent will be ignored for threads on AUDIO_DEVICE_OUT_REMOTE_SUBMIX");
             return;
         }
@@ -3035,7 +3062,7 @@
     // make sure standby delay is not too short when connected to an A2DP sink to avoid
     // truncating audio when going to standby.
     mStandbyDelayNs = AudioFlinger::mStandbyTimeInNsecs;
-    if ((mOutDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0) {
+    if (!Intersection(outDeviceTypes(),  getAudioDeviceOutAllA2dpSet()).empty()) {
         if (mStandbyDelayNs < kDefaultStandbyTimeInNsecs) {
             mStandbyDelayNs = kDefaultStandbyTimeInNsecs;
         }
@@ -3283,8 +3310,8 @@
 
         // If the device is AUDIO_DEVICE_OUT_BUS, check for downstream latency.
         //
-        // Note: we access outDevice() outside of mLock.
-        if (isMsdDevice() && (outDevice() & AUDIO_DEVICE_OUT_BUS) != 0) {
+        // Note: we access outDeviceTypes() outside of mLock.
+        if (isMsdDevice() && outDeviceTypes().count(AUDIO_DEVICE_OUT_BUS) != 0) {
             // Here, we try for the AF lock, but do not block on it as the latency
             // is more informational.
             if (mAudioFlinger->mLock.tryLock() == NO_ERROR) {
@@ -3820,8 +3847,10 @@
                             if (diff > 0) {
                                 // notify of throttle end on debug log
                                 // but prevent spamming for bluetooth
-                                ALOGD_IF(!audio_is_a2dp_out_device(outDevice()) &&
-                                         !audio_is_hearing_aid_out_device(outDevice()),
+                                ALOGD_IF(!isSingleDeviceType(
+                                                 outDeviceTypes(), audio_is_a2dp_out_device) &&
+                                         !isSingleDeviceType(
+                                                 outDeviceTypes(), audio_is_hearing_aid_out_device),
                                         "mixer(%p) throttle end: throttle time(%u)", this, diff);
                                 mThreadThrottleEndMs = mThreadThrottleTimeMs;
                             }
@@ -4006,25 +4035,31 @@
 
     // store new device and send to effects
     audio_devices_t type = AUDIO_DEVICE_NONE;
+    AudioDeviceTypeAddrVector deviceTypeAddrs;
     for (unsigned int i = 0; i < patch->num_sinks; i++) {
+        LOG_ALWAYS_FATAL_IF(popcount(patch->sinks[i].ext.device.type) > 1
+                            && !mOutput->audioHwDev->supportsAudioPatches(),
+                            "Enumerated device type(%#x) must not be used "
+                            "as it does not support audio patches",
+                            patch->sinks[i].ext.device.type);
         type |= patch->sinks[i].ext.device.type;
+        deviceTypeAddrs.push_back(AudioDeviceTypeAddr(patch->sinks[i].ext.device.type,
+                patch->sinks[i].ext.device.address));
     }
 
     audio_port_handle_t sinkPortId = patch->sinks[0].id;
 #ifdef ADD_BATTERY_DATA
     // when changing the audio output device, call addBatteryData to notify
     // the change
-    if (mOutDevice != type) {
+    if (outDeviceTypes() != deviceTypes) {
         uint32_t params = 0;
         // check whether speaker is on
-        if (type & AUDIO_DEVICE_OUT_SPEAKER) {
+        if (deviceTypes.count(AUDIO_DEVICE_OUT_SPEAKER) > 0) {
             params |= IMediaPlayerService::kBatteryDataSpeakerOn;
         }
 
-        audio_devices_t deviceWithoutSpeaker
-            = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER;
         // check if any other device (except speaker) is on
-        if (type & deviceWithoutSpeaker) {
+        if (!isSingleDeviceType(deviceTypes, AUDIO_DEVICE_OUT_SPEAKER)) {
             params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn;
         }
 
@@ -4038,11 +4073,12 @@
         mEffectChains[i]->setDevice_l(type);
     }
 
-    // mPrevOutDevice is the latest device set by createAudioPatch_l(). It is not set when
-    // the thread is created so that the first patch creation triggers an ioConfigChanged callback
-    bool configChanged = (mPrevOutDevice != type) || (mDeviceId != sinkPortId);
-    mOutDevice = type;
+    // mPatch.num_sinks is not set when the thread is created so that
+    // the first patch creation triggers an ioConfigChanged callback
+    bool configChanged = (mPatch.num_sinks == 0) ||
+                         (mPatch.sinks[0].id != sinkPortId);
     mPatch = *patch;
+    mOutDeviceTypeAddrs = deviceTypeAddrs;
 
     if (mOutput->audioHwDev->supportsAudioPatches()) {
         sp<DeviceHalInterface> hwDevice = mOutput->audioHwDev->hwDevice();
@@ -4068,8 +4104,6 @@
         *handle = AUDIO_PATCH_HANDLE_NONE;
     }
     if (configChanged) {
-        mPrevOutDevice = type;
-        mDeviceId = sinkPortId;
         sendIoConfigEvent_l(AUDIO_OUTPUT_CONFIG_CHANGED);
     }
     return status;
@@ -4093,7 +4127,8 @@
 {
     status_t status = NO_ERROR;
 
-    mOutDevice = AUDIO_DEVICE_NONE;
+    mPatch = audio_patch{};
+    mOutDeviceTypeAddrs.clear();
 
     if (mOutput->audioHwDev->supportsAudioPatches()) {
         sp<DeviceHalInterface> hwDevice = mOutput->audioHwDev->hwDevice();
@@ -4133,8 +4168,8 @@
 // ----------------------------------------------------------------------------
 
 AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
-        audio_io_handle_t id, audio_devices_t device, bool systemReady, type_t type)
-    :   PlaybackThread(audioFlinger, output, id, device, type, systemReady),
+        audio_io_handle_t id, bool systemReady, type_t type)
+    :   PlaybackThread(audioFlinger, output, id, type, systemReady),
         // mAudioMixer below
         // mFastMixer below
         mFastMixerFutex(0),
@@ -4144,7 +4179,7 @@
         // mNormalSink below
 {
     setMasterBalance(audioFlinger->getMasterBalance_l());
-    ALOGV("MixerThread() id=%d device=%#x type=%d", id, device, type);
+    ALOGV("MixerThread() id=%d type=%d", id, type);
     ALOGV("mSampleRate=%u, mChannelMask=%#x, mChannelCount=%u, mFormat=%#x, mFrameSize=%zu, "
             "mFrameCount=%zu, mNormalFrameCount=%zu",
             mSampleRate, mChannelMask, mChannelCount, mFormat, mFrameSize, mFrameCount,
@@ -4186,7 +4221,7 @@
         // scheduled reliably with CFS. However, the BT A2DP HAL is
         // bursty (does not pull at a regular rate) and so cannot operate with FastMixer.
         initFastMixer = mFrameCount < mNormalFrameCount
-                && (mOutDevice & AUDIO_DEVICE_OUT_ALL_A2DP) == 0;
+                && Intersection(outDeviceTypes(), getAudioDeviceOutAllA2dpSet()).empty();
         break;
     }
     ALOGW_IF(initFastMixer == false && mFrameCount < mNormalFrameCount,
@@ -5357,39 +5392,7 @@
         }
     }
     if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) {
-#ifdef ADD_BATTERY_DATA
-        // when changing the audio output device, call addBatteryData to notify
-        // the change
-        if (mOutDevice != value) {
-            uint32_t params = 0;
-            // check whether speaker is on
-            if (value & AUDIO_DEVICE_OUT_SPEAKER) {
-                params |= IMediaPlayerService::kBatteryDataSpeakerOn;
-            }
-
-            audio_devices_t deviceWithoutSpeaker
-                = AUDIO_DEVICE_OUT_ALL & ~AUDIO_DEVICE_OUT_SPEAKER;
-            // check if any other device (except speaker) is on
-            if (value & deviceWithoutSpeaker) {
-                params |= IMediaPlayerService::kBatteryDataOtherAudioDeviceOn;
-            }
-
-            if (params != 0) {
-                addBatteryData(params);
-            }
-        }
-#endif
-
-        // forward device change to effects that have requested to be
-        // aware of attached audio device.
-        if (value != AUDIO_DEVICE_NONE) {
-            a2dpDeviceChanged =
-                    (mOutDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != (value & AUDIO_DEVICE_OUT_ALL_A2DP);
-            mOutDevice = value;
-            for (size_t i = 0; i < mEffectChains.size(); i++) {
-                mEffectChains[i]->setDevice_l(mOutDevice);
-            }
-        }
+        LOG_FATAL("Should not set routing device in MixerThread");
     }
 
     if (status == NO_ERROR) {
@@ -5490,9 +5493,8 @@
 // ----------------------------------------------------------------------------
 
 AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger,
-        AudioStreamOut* output, audio_io_handle_t id, audio_devices_t device,
-        ThreadBase::type_t type, bool systemReady)
-    :   PlaybackThread(audioFlinger, output, id, device, type, systemReady)
+        AudioStreamOut* output, audio_io_handle_t id, ThreadBase::type_t type, bool systemReady)
+    :   PlaybackThread(audioFlinger, output, id, type, systemReady)
 {
     setMasterBalance(audioFlinger->getMasterBalance_l());
 }
@@ -5894,16 +5896,7 @@
     AudioParameter param = AudioParameter(keyValuePair);
     int value;
     if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) {
-        // forward device change to effects that have requested to be
-        // aware of attached audio device.
-        if (value != AUDIO_DEVICE_NONE) {
-            a2dpDeviceChanged =
-                    (mOutDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != (value & AUDIO_DEVICE_OUT_ALL_A2DP);
-            mOutDevice = value;
-            for (size_t i = 0; i < mEffectChains.size(); i++) {
-                mEffectChains[i]->setDevice_l(mOutDevice);
-            }
-        }
+        LOG_FATAL("Should not set routing device in DirectOutputThread");
     }
     if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) {
         // do not accept frame count changes if tracks are open as the track buffer
@@ -6115,8 +6108,8 @@
 
 // ----------------------------------------------------------------------------
 AudioFlinger::OffloadThread::OffloadThread(const sp<AudioFlinger>& audioFlinger,
-        AudioStreamOut* output, audio_io_handle_t id, uint32_t device, bool systemReady)
-    :   DirectOutputThread(audioFlinger, output, id, device, OFFLOAD, systemReady),
+        AudioStreamOut* output, audio_io_handle_t id, bool systemReady)
+    :   DirectOutputThread(audioFlinger, output, id, OFFLOAD, systemReady),
         mPausedWriteLength(0), mPausedBytesRemaining(0), mKeepWakeLock(true),
         mOffloadUnderrunPosition(~0LL)
 {
@@ -6441,7 +6434,7 @@
 
 AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger,
         AudioFlinger::MixerThread* mainThread, audio_io_handle_t id, bool systemReady)
-    :   MixerThread(audioFlinger, mainThread->getOutput(), id, mainThread->outDevice(),
+    :   MixerThread(audioFlinger, mainThread->getOutput(), id,
                     systemReady, DUPLICATING),
         mWaitTimeMs(UINT_MAX)
 {
@@ -6673,11 +6666,9 @@
 AudioFlinger::RecordThread::RecordThread(const sp<AudioFlinger>& audioFlinger,
                                          AudioStreamIn *input,
                                          audio_io_handle_t id,
-                                         audio_devices_t outDevice,
-                                         audio_devices_t inDevice,
                                          bool systemReady
                                          ) :
-    ThreadBase(audioFlinger, id, outDevice, inDevice, RECORD, systemReady),
+    ThreadBase(audioFlinger, id, RECORD, systemReady),
     mInput(input),
     mSource(mInput),
     mActiveTracks(&this->mLocalLog),
@@ -6709,8 +6700,9 @@
 
     // TODO: We may also match on address as well as device type for
     // AUDIO_DEVICE_IN_BUS, AUDIO_DEVICE_IN_BLUETOOTH_A2DP, AUDIO_DEVICE_IN_REMOTE_SUBMIX
-    mTimestampCorrectedDevices = (audio_devices_t)property_get_int64(
-            "audio.timestamp.corrected_input_devices",
+    // TODO: This property should be ensure that only contains one single device type.
+    mTimestampCorrectedDevice = (audio_devices_t)property_get_int64(
+            "audio.timestamp.corrected_input_device",
             (int64_t)(mIsMsdDevice ? AUDIO_DEVICE_IN_BUS // turn on by default for MSD
                                    : AUDIO_DEVICE_NONE));
 
@@ -8054,7 +8046,7 @@
 {
     // disable AEC and NS if the device is a BT SCO headset supporting those
     // pre processings
-    bool suspend = audio_is_bluetooth_sco_device(mInDevice) &&
+    bool suspend = audio_is_bluetooth_sco_device(inDeviceType()) &&
                         mAudioFlinger->btNrecIsOff();
     if (mBtNrecSuspended.exchange(suspend) != suspend) {
         for (size_t i = 0; i < mEffectChains.size(); i++) {
@@ -8119,34 +8111,11 @@
         }
     }
     if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) {
-        // forward device change to effects that have requested to be
-        // aware of attached audio device.
-        for (size_t i = 0; i < mEffectChains.size(); i++) {
-            mEffectChains[i]->setDevice_l(value);
-        }
-
-        // store input device and output device but do not forward output device to audio HAL.
-        // Note that status is ignored by the caller for output device
-        // (see AudioFlinger::setParameters()
-        if (audio_is_output_devices(value)) {
-            mOutDevice = value;
-            status = BAD_VALUE;
-        } else {
-            mInDevice = value;
-            if (value != AUDIO_DEVICE_NONE) {
-                mPrevInDevice = value;
-            }
-            checkBtNrec_l();
-        }
+        LOG_FATAL("Should not set routing device in RecordThread");
     }
     if (param.getInt(String8(AudioParameter::keyInputSource), value) == NO_ERROR &&
             mAudioSource != (audio_source_t)value) {
-        // forward device change to effects that have requested to be
-        // aware of attached audio device.
-        for (size_t i = 0; i < mEffectChains.size(); i++) {
-            mEffectChains[i]->setAudioSource_l((audio_source_t)value);
-        }
-        mAudioSource = (audio_source_t)value;
+        LOG_FATAL("Should not set audio source in RecordThread");
     }
 
     if (status == NO_ERROR) {
@@ -8348,11 +8317,11 @@
     status_t status = NO_ERROR;
 
     // store new device and send to effects
-    mInDevice = patch->sources[0].ext.device.type;
+    mInDeviceTypeAddr.mType = patch->sources[0].ext.device.type;
+    mInDeviceTypeAddr.mAddress = patch->sources[0].ext.device.address;
     audio_port_handle_t deviceId = patch->sources[0].id;
-    mPatch = *patch;
     for (size_t i = 0; i < mEffectChains.size(); i++) {
-        mEffectChains[i]->setDevice_l(mInDevice);
+        mEffectChains[i]->setDevice_l(mInDeviceTypeAddr.mType);
     }
 
     checkBtNrec_l();
@@ -8391,10 +8360,9 @@
         *handle = AUDIO_PATCH_HANDLE_NONE;
     }
 
-    if ((mInDevice != mPrevInDevice) || (mDeviceId != deviceId)) {
+    if ((mPatch.num_sources == 0) || (mPatch.sources[0].id != deviceId)) {
         sendIoConfigEvent_l(AUDIO_INPUT_CONFIG_CHANGED);
-        mPrevInDevice = mInDevice;
-        mDeviceId = deviceId;
+        mPatch = *patch;
     }
 
     return status;
@@ -8404,7 +8372,8 @@
 {
     status_t status = NO_ERROR;
 
-    mInDevice = AUDIO_DEVICE_NONE;
+    mPatch = audio_patch{};
+    mInDeviceTypeAddr.reset();
 
     if (mInput->audioHwDev->supportsAudioPatches()) {
         sp<DeviceHalInterface> hwDevice = mInput->audioHwDev->hwDevice();
@@ -8417,6 +8386,15 @@
     return status;
 }
 
+void AudioFlinger::RecordThread::updateOutDevices(const DeviceDescriptorBaseVector& outDevices)
+{
+    mOutDevices = outDevices;
+    mOutDeviceTypeAddrs = deviceTypeAddrsFromDescriptors(mOutDevices);
+    for (size_t i = 0; i < mEffectChains.size(); i++) {
+        mEffectChains[i]->setDevice_l(deviceTypesToBitMask(outDeviceTypes()));
+    }
+}
+
 void AudioFlinger::RecordThread::addPatchTrack(const sp<PatchRecord>& record)
 {
     Mutex::Autolock _l(mLock);
@@ -8493,9 +8471,8 @@
 
 AudioFlinger::MmapThread::MmapThread(
         const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-        AudioHwDevice *hwDev, sp<StreamHalInterface> stream,
-        audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady)
-    : ThreadBase(audioFlinger, id, outDevice, inDevice, MMAP, systemReady),
+        AudioHwDevice *hwDev, sp<StreamHalInterface> stream, bool systemReady)
+    : ThreadBase(audioFlinger, id, MMAP, systemReady),
       mSessionId(AUDIO_SESSION_NONE),
       mPortId(AUDIO_PORT_HANDLE_NONE),
       mHalStream(stream), mHalDevice(hwDev->hwDevice()), mAudioHwDev(hwDev),
@@ -8861,26 +8838,7 @@
     int value;
     bool sendToHal = true;
     if (param.getInt(String8(AudioParameter::keyRouting), value) == NO_ERROR) {
-        audio_devices_t device = (audio_devices_t)value;
-        // forward device change to effects that have requested to be
-        // aware of attached audio device.
-        if (device != AUDIO_DEVICE_NONE) {
-            for (size_t i = 0; i < mEffectChains.size(); i++) {
-                mEffectChains[i]->setDevice_l(device);
-            }
-        }
-        if (audio_is_output_devices(device)) {
-            mOutDevice = device;
-            if (!isOutput()) {
-                sendToHal = false;
-            }
-        } else {
-            mInDevice = device;
-            if (device != AUDIO_DEVICE_NONE) {
-                mPrevInDevice = value;
-            }
-            // TODO: implement and call checkBtNrec_l();
-        }
+        LOG_FATAL("Should not happen set routing device in MmapThread");
     }
     if (sendToHal) {
         status = mHalStream->setParameters(keyValuePair);
@@ -8939,24 +8897,35 @@
     // store new device and send to effects
     audio_devices_t type = AUDIO_DEVICE_NONE;
     audio_port_handle_t deviceId;
+    AudioDeviceTypeAddrVector sinkDeviceTypeAddrs;
+    AudioDeviceTypeAddr sourceDeviceTypeAddr;
+    uint32_t numDevices = 0;
     if (isOutput()) {
         for (unsigned int i = 0; i < patch->num_sinks; i++) {
+            LOG_ALWAYS_FATAL_IF(popcount(patch->sinks[i].ext.device.type) > 1
+                                && !mAudioHwDev->supportsAudioPatches(),
+                                "Enumerated device type(%#x) must not be used "
+                                "as it does not support audio patches",
+                                patch->sinks[i].ext.device.type);
             type |= patch->sinks[i].ext.device.type;
+            sinkDeviceTypeAddrs.push_back(AudioDeviceTypeAddr(patch->sinks[i].ext.device.type,
+                    patch->sinks[i].ext.device.address));
         }
         deviceId = patch->sinks[0].id;
+        numDevices = mPatch.num_sinks;
     } else {
         type = patch->sources[0].ext.device.type;
         deviceId = patch->sources[0].id;
+        numDevices = mPatch.num_sources;
+        sourceDeviceTypeAddr.mType = patch->sources[0].ext.device.type;
+        sourceDeviceTypeAddr.mAddress = patch->sources[0].ext.device.address;
     }
 
     for (size_t i = 0; i < mEffectChains.size(); i++) {
         mEffectChains[i]->setDevice_l(type);
     }
 
-    if (isOutput()) {
-        mOutDevice = type;
-    } else {
-        mInDevice = type;
+    if (!isOutput()) {
         // store new source and send to effects
         if (mAudioSource != patch->sinks[0].ext.mix.usecase.source) {
             mAudioSource = patch->sinks[0].ext.mix.usecase.source;
@@ -8993,26 +8962,21 @@
         *handle = AUDIO_PATCH_HANDLE_NONE;
     }
 
-    if (isOutput() && (mPrevOutDevice != mOutDevice || mDeviceId != deviceId)) {
-        mPrevOutDevice = type;
-        sendIoConfigEvent_l(AUDIO_OUTPUT_CONFIG_CHANGED);
+    if (numDevices == 0 || mDeviceId != deviceId) {
+        if (isOutput()) {
+            sendIoConfigEvent_l(AUDIO_OUTPUT_CONFIG_CHANGED);
+            mOutDeviceTypeAddrs = sinkDeviceTypeAddrs;
+        } else {
+            sendIoConfigEvent_l(AUDIO_INPUT_CONFIG_CHANGED);
+            mInDeviceTypeAddr = sourceDeviceTypeAddr;
+        }
         sp<MmapStreamCallback> callback = mCallback.promote();
         if (mDeviceId != deviceId && callback != 0) {
             mLock.unlock();
             callback->onRoutingChanged(deviceId);
             mLock.lock();
         }
-        mDeviceId = deviceId;
-    }
-    if (!isOutput() && (mPrevInDevice != mInDevice || mDeviceId != deviceId)) {
-        mPrevInDevice = type;
-        sendIoConfigEvent_l(AUDIO_INPUT_CONFIG_CHANGED);
-        sp<MmapStreamCallback> callback = mCallback.promote();
-        if (mDeviceId != deviceId && callback != 0) {
-            mLock.unlock();
-            callback->onRoutingChanged(deviceId);
-            mLock.lock();
-        }
+        mPatch = *patch;
         mDeviceId = deviceId;
     }
     return status;
@@ -9022,7 +8986,9 @@
 {
     status_t status = NO_ERROR;
 
-    mInDevice = AUDIO_DEVICE_NONE;
+    mPatch = audio_patch{};
+    mOutDeviceTypeAddrs.clear();
+    mInDeviceTypeAddr.reset();
 
     bool supportsAudioPatches = mHalDevice->supportsAudioPatches(&supportsAudioPatches) == OK ?
                                         supportsAudioPatches : false;
@@ -9198,9 +9164,8 @@
 
 AudioFlinger::MmapPlaybackThread::MmapPlaybackThread(
         const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-        AudioHwDevice *hwDev,  AudioStreamOut *output,
-        audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady)
-    : MmapThread(audioFlinger, id, hwDev, output->stream, outDevice, inDevice, systemReady),
+        AudioHwDevice *hwDev,  AudioStreamOut *output, bool systemReady)
+    : MmapThread(audioFlinger, id, hwDev, output->stream, systemReady),
       mStreamType(AUDIO_STREAM_MUSIC),
       mStreamVolume(1.0),
       mStreamMute(false),
@@ -9410,9 +9375,8 @@
 
 AudioFlinger::MmapCaptureThread::MmapCaptureThread(
         const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-        AudioHwDevice *hwDev,  AudioStreamIn *input,
-        audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady)
-    : MmapThread(audioFlinger, id, hwDev, input->stream, outDevice, inDevice, systemReady),
+        AudioHwDevice *hwDev,  AudioStreamIn *input, bool systemReady)
+    : MmapThread(audioFlinger, id, hwDev, input->stream, systemReady),
       mInput(input)
 {
     snprintf(mThreadName, kThreadNameLength, "AudioMmapIn_%X", id);
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 0a473d5..a7660f3 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -37,8 +37,7 @@
     static const char *threadTypeToString(type_t type);
 
     ThreadBase(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-                audio_devices_t outDevice, audio_devices_t inDevice, type_t type,
-                bool systemReady);
+               type_t type, bool systemReady);
     virtual             ~ThreadBase();
 
     virtual status_t    readyToRun();
@@ -52,6 +51,7 @@
         CFG_EVENT_SET_PARAMETER,
         CFG_EVENT_CREATE_AUDIO_PATCH,
         CFG_EVENT_RELEASE_AUDIO_PATCH,
+        CFG_EVENT_UPDATE_OUT_DEVICE,
     };
 
     class ConfigEventData: public RefBase {
@@ -219,6 +219,28 @@
         virtual ~ReleaseAudioPatchConfigEvent() {}
     };
 
+    class UpdateOutDevicesConfigEventData : public ConfigEventData {
+    public:
+        explicit UpdateOutDevicesConfigEventData(const DeviceDescriptorBaseVector& outDevices) :
+            mOutDevices(outDevices) {}
+
+        virtual void dump(char *buffer, size_t size) {
+            snprintf(buffer, size, "Devices: %s", android::toString(mOutDevices).c_str());
+        }
+
+        DeviceDescriptorBaseVector mOutDevices;
+    };
+
+    class UpdateOutDevicesConfigEvent : public ConfigEvent {
+    public:
+        explicit UpdateOutDevicesConfigEvent(const DeviceDescriptorBaseVector& outDevices) :
+            ConfigEvent(CFG_EVENT_UPDATE_OUT_DEVICE) {
+            mData = new UpdateOutDevicesConfigEventData(outDevices);
+        }
+
+        virtual ~UpdateOutDevicesConfigEvent();
+    };
+
     class PMDeathRecipient : public IBinder::DeathRecipient {
     public:
         explicit    PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {}
@@ -278,19 +300,26 @@
                 status_t    sendCreateAudioPatchConfigEvent(const struct audio_patch *patch,
                                                             audio_patch_handle_t *handle);
                 status_t    sendReleaseAudioPatchConfigEvent(audio_patch_handle_t handle);
+                status_t    sendUpdateOutDeviceConfigEvent(
+                                    const DeviceDescriptorBaseVector& outDevices);
                 void        processConfigEvents_l();
     virtual     void        cacheParameters_l() = 0;
     virtual     status_t    createAudioPatch_l(const struct audio_patch *patch,
                                                audio_patch_handle_t *handle) = 0;
     virtual     status_t    releaseAudioPatch_l(const audio_patch_handle_t handle) = 0;
+    virtual     void        updateOutDevices(const DeviceDescriptorBaseVector& outDevices);
     virtual     void        toAudioPortConfig(struct audio_port_config *config) = 0;
 
 
                 // see note at declaration of mStandby, mOutDevice and mInDevice
                 bool        standby() const { return mStandby; }
-                audio_devices_t outDevice() const { return mOutDevice; }
-                audio_devices_t inDevice() const { return mInDevice; }
-                audio_devices_t getDevice() const { return isOutput() ? mOutDevice : mInDevice; }
+                const DeviceTypeSet outDeviceTypes() const {
+                    return getAudioDeviceTypes(mOutDeviceTypeAddrs);
+                }
+                audio_devices_t inDeviceType() const { return mInDeviceTypeAddr.mType; }
+                DeviceTypeSet getDeviceTypes() const {
+                    return isOutput() ? outDeviceTypes() : DeviceTypeSet({inDeviceType()});
+                }
 
     virtual     bool        isOutput() const = 0;
 
@@ -502,26 +531,21 @@
                                                            // HAL format if Fastmixer is used.
                 audio_format_t          mHALFormat;
                 size_t                  mBufferSize;       // HAL buffer size for read() or write()
-
+                AudioDeviceTypeAddrVector mOutDeviceTypeAddrs; // output device types and addresses
+                AudioDeviceTypeAddr       mInDeviceTypeAddr;   // input device type and address
                 Vector< sp<ConfigEvent> >     mConfigEvents;
                 Vector< sp<ConfigEvent> >     mPendingConfigEvents; // events awaiting system ready
 
                 // These fields are written and read by thread itself without lock or barrier,
-                // and read by other threads without lock or barrier via standby(), outDevice()
-                // and inDevice().
+                // and read by other threads without lock or barrier via standby(), outDeviceTypes()
+                // and inDeviceType().
                 // Because of the absence of a lock or barrier, any other thread that reads
                 // these fields must use the information in isolation, or be prepared to deal
                 // with possibility that it might be inconsistent with other information.
                 bool                    mStandby;     // Whether thread is currently in standby.
-                audio_devices_t         mOutDevice;   // output device
-                audio_devices_t         mInDevice;    // input device
-                audio_devices_t         mPrevOutDevice;   // previous output device
-                audio_devices_t         mPrevInDevice;    // previous input device
+
                 struct audio_patch      mPatch;
-                /**
-                 * @brief mDeviceId  current device port unique identifier
-                 */
-                audio_port_handle_t     mDeviceId = AUDIO_PORT_HANDLE_NONE;
+
                 audio_source_t          mAudioSource;
 
                 const audio_io_handle_t mId;
@@ -544,7 +568,8 @@
                 ExtendedTimestamp       mTimestamp;
                 TimestampVerifier< // For timestamp statistics.
                         int64_t /* frame count */, int64_t /* time ns */> mTimestampVerifier;
-                audio_devices_t         mTimestampCorrectedDevices = AUDIO_DEVICE_NONE;
+                // Timestamp corrected device should be a single device.
+                audio_devices_t         mTimestampCorrectedDevice = AUDIO_DEVICE_NONE;
 
                 // ThreadLoop statistics per iteration.
                 int64_t                 mLastIoBeginNs = -1;
@@ -719,7 +744,7 @@
     static const nsecs_t kMaxNextBufferDelayNs = 100000000;
 
     PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
-                   audio_io_handle_t id, audio_devices_t device, type_t type, bool systemReady);
+                   audio_io_handle_t id, type_t type, bool systemReady);
     virtual             ~PlaybackThread();
 
     // Thread virtuals
@@ -886,10 +911,10 @@
                             }
 
                 bool        isTimestampCorrectionEnabled() const override {
-                                const audio_devices_t device =
-                                        mOutDevice & mTimestampCorrectedDevices;
-                                return audio_is_output_devices(device) && popcount(device) > 0;
+                                return audio_is_output_devices(mTimestampCorrectedDevice)
+                                        && outDeviceTypes().count(mTimestampCorrectedDevice) != 0;
                             }
+
 protected:
     // updated by readOutputParameters_l()
     size_t                          mNormalFrameCount;  // normal mixer and effects
@@ -1171,7 +1196,6 @@
     MixerThread(const sp<AudioFlinger>& audioFlinger,
                 AudioStreamOut* output,
                 audio_io_handle_t id,
-                audio_devices_t device,
                 bool systemReady,
                 type_t type = MIXER);
     virtual             ~MixerThread();
@@ -1269,8 +1293,8 @@
 public:
 
     DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
-                       audio_io_handle_t id, audio_devices_t device, bool systemReady)
-        : DirectOutputThread(audioFlinger, output, id, device, DIRECT, systemReady) { }
+                       audio_io_handle_t id, bool systemReady)
+        : DirectOutputThread(audioFlinger, output, id, DIRECT, systemReady) { }
 
     virtual                 ~DirectOutputThread();
 
@@ -1305,8 +1329,7 @@
     bool mVolumeShaperActive = false;
 
     DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
-                        audio_io_handle_t id, audio_devices_t device, ThreadBase::type_t type,
-                        bool systemReady);
+                       audio_io_handle_t id, ThreadBase::type_t type, bool systemReady);
     void processVolume_l(Track *track, bool lastTrack);
 
     // prepareTracks_l() tells threadLoop_mix() the name of the single active track
@@ -1345,7 +1368,7 @@
 public:
 
     OffloadThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
-                        audio_io_handle_t id, uint32_t device, bool systemReady);
+                  audio_io_handle_t id, bool systemReady);
     virtual                 ~OffloadThread() {};
     virtual     void        flushHw_l();
 
@@ -1516,8 +1539,6 @@
             RecordThread(const sp<AudioFlinger>& audioFlinger,
                     AudioStreamIn *input,
                     audio_io_handle_t id,
-                    audio_devices_t outDevice,
-                    audio_devices_t inDevice,
                     bool systemReady
                     );
             virtual     ~RecordThread();
@@ -1577,6 +1598,7 @@
     virtual status_t    createAudioPatch_l(const struct audio_patch *patch,
                                            audio_patch_handle_t *handle);
     virtual status_t    releaseAudioPatch_l(const audio_patch_handle_t handle);
+            void        updateOutDevices(const DeviceDescriptorBaseVector& outDevices) override;
 
             void        addPatchTrack(const sp<PatchRecord>& record);
             void        deletePatchTrack(const sp<PatchRecord>& record);
@@ -1629,8 +1651,8 @@
 
             bool        isTimestampCorrectionEnabled() const override {
                             // checks popcount for exactly one device.
-                            return audio_is_input_device(
-                                    mInDevice & mTimestampCorrectedDevices);
+                            return audio_is_input_device(mTimestampCorrectedDevice)
+                                    && inDeviceType() == mTimestampCorrectedDevice;
                         }
 
 protected:
@@ -1709,6 +1731,8 @@
             std::atomic_bool                    mBtNrecSuspended;
 
             int64_t                             mFramesRead = 0;    // continuous running counter.
+
+            DeviceDescriptorBaseVector          mOutDevices;
 };
 
 class MmapThread : public ThreadBase
@@ -1718,8 +1742,7 @@
 #include "MmapTracks.h"
 
     MmapThread(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-                      AudioHwDevice *hwDev, sp<StreamHalInterface> stream,
-                      audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady);
+               AudioHwDevice *hwDev, sp<StreamHalInterface> stream, bool systemReady);
     virtual     ~MmapThread();
 
     virtual     void        configure(const audio_attributes_t *attr,
@@ -1792,6 +1815,11 @@
                 void        dumpInternals_l(int fd, const Vector<String16>& args) override;
                 void        dumpTracks_l(int fd, const Vector<String16>& args) override;
 
+                /**
+                 * @brief mDeviceId  current device port unique identifier
+                 */
+                audio_port_handle_t     mDeviceId = AUDIO_PORT_HANDLE_NONE;
+
                 audio_attributes_t      mAttr;
                 audio_session_t         mSessionId;
                 audio_port_handle_t     mPortId;
@@ -1812,8 +1840,7 @@
 
 public:
     MmapPlaybackThread(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-                      AudioHwDevice *hwDev, AudioStreamOut *output,
-                      audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady);
+                       AudioHwDevice *hwDev, AudioStreamOut *output, bool systemReady);
     virtual     ~MmapPlaybackThread() {}
 
     virtual     void        configure(const audio_attributes_t *attr,
@@ -1862,8 +1889,7 @@
 
 public:
     MmapCaptureThread(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id,
-                      AudioHwDevice *hwDev, AudioStreamIn *input,
-                      audio_devices_t outDevice, audio_devices_t inDevice, bool systemReady);
+                      AudioHwDevice *hwDev, AudioStreamIn *input, bool systemReady);
     virtual     ~MmapCaptureThread() {}
 
                 AudioStreamIn* clearInput();