diff --git a/audio/aidl/Android.bp b/audio/aidl/Android.bp
index 563ee62..691cf34 100644
--- a/audio/aidl/Android.bp
+++ b/audio/aidl/Android.bp
@@ -117,6 +117,8 @@
         "android/hardware/audio/core/IStreamIn.aidl",
         "android/hardware/audio/core/IStreamOut.aidl",
         "android/hardware/audio/core/ITelephony.aidl",
+        "android/hardware/audio/core/MicrophoneDynamicInfo.aidl",
+        "android/hardware/audio/core/MicrophoneInfo.aidl",
         "android/hardware/audio/core/MmapBufferDescriptor.aidl",
         "android/hardware/audio/core/ModuleDebug.aidl",
         "android/hardware/audio/core/StreamDescriptor.aidl",
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IModule.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IModule.aidl
index 7f960e0..0c7ca27 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IModule.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IModule.aidl
@@ -56,6 +56,7 @@
   void setMasterVolume(float volume);
   boolean getMicMute();
   void setMicMute(boolean mute);
+  android.hardware.audio.core.MicrophoneInfo[] getMicrophones();
   void updateAudioMode(android.hardware.audio.core.AudioMode mode);
   void updateScreenRotation(android.hardware.audio.core.IModule.ScreenRotation rotation);
   void updateScreenState(boolean isTurnedOn);
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IStreamIn.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IStreamIn.aidl
index d5ab3e8..e9c727f 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IStreamIn.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IStreamIn.aidl
@@ -35,5 +35,20 @@
 @VintfStability
 interface IStreamIn {
   void close();
+  android.hardware.audio.core.MicrophoneDynamicInfo[] getActiveMicrophones();
+  android.hardware.audio.core.IStreamIn.MicrophoneDirection getMicrophoneDirection();
+  void setMicrophoneDirection(android.hardware.audio.core.IStreamIn.MicrophoneDirection direction);
+  float getMicrophoneFieldDimension();
+  void setMicrophoneFieldDimension(float zoom);
   void updateMetadata(in android.hardware.audio.common.SinkMetadata sinkMetadata);
+  const int MIC_FIELD_DIMENSION_WIDE_ANGLE = -1;
+  const int MIC_FIELD_DIMENSION_NO_ZOOM = 0;
+  const int MIC_FIELD_DIMENSION_MAX_ZOOM = 1;
+  @Backing(type="int") @VintfStability
+  enum MicrophoneDirection {
+    UNSPECIFIED = 0,
+    FRONT = 1,
+    BACK = 2,
+    EXTERNAL = 3,
+  }
 }
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneDynamicInfo.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneDynamicInfo.aidl
new file mode 100644
index 0000000..50a5528
--- /dev/null
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneDynamicInfo.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.audio.core;
+@JavaDerive(equals=true, toString=true) @VintfStability
+parcelable MicrophoneDynamicInfo {
+  @utf8InCpp String id;
+  android.hardware.audio.core.MicrophoneDynamicInfo.ChannelMapping[] channelMapping;
+  @Backing(type="int") @VintfStability
+  enum ChannelMapping {
+    UNUSED = 0,
+    DIRECT = 1,
+    PROCESSED = 2,
+  }
+}
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneInfo.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneInfo.aidl
new file mode 100644
index 0000000..68c7f88
--- /dev/null
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/MicrophoneInfo.aidl
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.audio.core;
+@JavaDerive(equals=true, toString=true) @VintfStability
+parcelable MicrophoneInfo {
+  @utf8InCpp String id;
+  android.media.audio.common.AudioDevice device;
+  android.hardware.audio.core.MicrophoneInfo.Location location = android.hardware.audio.core.MicrophoneInfo.Location.UNKNOWN;
+  int group = -1;
+  int indexInTheGroup = -1;
+  @nullable android.hardware.audio.core.MicrophoneInfo.Sensitivity sensitivity;
+  android.hardware.audio.core.MicrophoneInfo.Directionality directionality = android.hardware.audio.core.MicrophoneInfo.Directionality.UNKNOWN;
+  android.hardware.audio.core.MicrophoneInfo.FrequencyResponsePoint[] frequencyResponse;
+  @nullable android.hardware.audio.core.MicrophoneInfo.Coordinate position;
+  @nullable android.hardware.audio.core.MicrophoneInfo.Coordinate orientation;
+  const int GROUP_UNKNOWN = -1;
+  const int INDEX_IN_THE_GROUP_UNKNOWN = -1;
+  @Backing(type="int") @VintfStability
+  enum Location {
+    UNKNOWN = 0,
+    MAINBODY = 1,
+    MAINBODY_MOVABLE = 2,
+    PERIPHERAL = 3,
+  }
+  @VintfStability
+  parcelable Sensitivity {
+    float leveldBFS;
+    float maxSpldB;
+    float minSpldB;
+  }
+  @Backing(type="int") @VintfStability
+  enum Directionality {
+    UNKNOWN = 0,
+    OMNI = 1,
+    BI_DIRECTIONAL = 2,
+    CARDIOID = 3,
+    HYPER_CARDIOID = 4,
+    SUPER_CARDIOID = 5,
+  }
+  @VintfStability
+  parcelable FrequencyResponsePoint {
+    float frequencyHz;
+    float leveldB;
+  }
+  @VintfStability
+  parcelable Coordinate {
+    float x;
+    float y;
+    float z;
+  }
+}
diff --git a/audio/aidl/android/hardware/audio/core/IModule.aidl b/audio/aidl/android/hardware/audio/core/IModule.aidl
index 974e7e8..786d5ee 100644
--- a/audio/aidl/android/hardware/audio/core/IModule.aidl
+++ b/audio/aidl/android/hardware/audio/core/IModule.aidl
@@ -25,6 +25,7 @@
 import android.hardware.audio.core.IStreamIn;
 import android.hardware.audio.core.IStreamOut;
 import android.hardware.audio.core.ITelephony;
+import android.hardware.audio.core.MicrophoneInfo;
 import android.hardware.audio.core.ModuleDebug;
 import android.hardware.audio.core.StreamDescriptor;
 import android.media.audio.common.AudioOffloadInfo;
@@ -605,6 +606,22 @@
     void setMicMute(boolean mute);
 
     /**
+     * Provide information describing built-in microphones of the HAL module.
+     *
+     * If there are no built-in microphones in the HAL module, it must return an
+     * empty vector. If there are microphones, but the HAL module does not
+     * possess the required information about them, EX_UNSUPPORTED_OPERATION
+     * must be thrown.
+     *
+     * If this method is supported by the HAL module, it must also support
+     * 'IStreamIn.getActiveMicrophones' method.
+     *
+     * @return The vector with information about each microphone.
+     * @throws EX_UNSUPPORTED_OPERATION If the information is unavailable.
+     */
+    MicrophoneInfo[] getMicrophones();
+
+    /**
      * Notify the HAL module on the change of the current audio mode.
      *
      * The current audio mode is always controlled by the client. This is an
diff --git a/audio/aidl/android/hardware/audio/core/IStreamIn.aidl b/audio/aidl/android/hardware/audio/core/IStreamIn.aidl
index 0c3e3d1..0b6e02c 100644
--- a/audio/aidl/android/hardware/audio/core/IStreamIn.aidl
+++ b/audio/aidl/android/hardware/audio/core/IStreamIn.aidl
@@ -17,6 +17,7 @@
 package android.hardware.audio.core;
 
 import android.hardware.audio.common.SinkMetadata;
+import android.hardware.audio.core.MicrophoneDynamicInfo;
 
 /**
  * This interface provides means for receiving audio data from input devices.
@@ -39,6 +40,92 @@
     void close();
 
     /**
+     * Provides information on the microphones that are active for this stream.
+     *
+     * The returned array contains dynamic information on the microphones which
+     * are active for this stream. Each entry in the returned array must have a
+     * corresponding entry (matched by the 'MicrophoneInfo.id' field value) in
+     * the list of all available microphones which is provided by the
+     * 'IModule.getMicrophones' method.
+     *
+     * This method must be supported by the HAL module if
+     * 'IModule.getMicrophones' is supported.
+     *
+     * @return The vector with dynamic information on the microphones.
+     * @throws EX_ILLEGAL_STATE If the stream has already been closed.
+     * @throws EX_UNSUPPORTED_OPERATION If the information is unavailable.
+     */
+    MicrophoneDynamicInfo[] getActiveMicrophones();
+
+    @VintfStability
+    @Backing(type="int")
+    enum MicrophoneDirection {
+        /**
+         * Don't do any directionality processing of the activated microphone(s).
+         */
+        UNSPECIFIED = 0,
+        /**
+         * Optimize capture for audio coming from the screen-side of the device.
+         */
+        FRONT = 1,
+        /**
+         * Optimize capture for audio coming from the side of the device opposite the screen.
+         */
+        BACK = 2,
+        /**
+         * Optimize capture for audio coming from an off-device microphone.
+         */
+        EXTERNAL = 3,
+    }
+    /**
+     * Get the current logical microphone direction.
+     *
+     * @return The current logical microphone direction.
+     * @throws EX_ILLEGAL_STATE If the stream has already been closed.
+     * @throws EX_UNSUPPORTED_OPERATION If the information is unavailable.
+     */
+    MicrophoneDirection getMicrophoneDirection();
+    /**
+     * Set the current logical microphone direction.
+     *
+     * The client sets this parameter in order to specify its preference for
+     * optimizing the direction of capture when multiple microphones are in use.
+     *
+     * @param direction The preferred capture direction.
+     * @throws EX_ILLEGAL_STATE If the stream has already been closed.
+     * @throws EX_UNSUPPORTED_OPERATION If the operation is not supported.
+     */
+    void setMicrophoneDirection(MicrophoneDirection direction);
+
+    const int MIC_FIELD_DIMENSION_WIDE_ANGLE = -1;
+    const int MIC_FIELD_DIMENSION_NO_ZOOM = 0;
+    const int MIC_FIELD_DIMENSION_MAX_ZOOM = 1;
+    /**
+     * Get the "zoom factor" for the logical microphone.
+     *
+     * The returned value must be within the range of [-1.0, 1.0] (see
+     * MIC_FIELD_DIMENSION_* constants).
+     *
+     * @throws EX_ILLEGAL_STATE If the stream has already been closed.
+     * @throws EX_UNSUPPORTED_OPERATION If the information is unavailable.
+     */
+    float getMicrophoneFieldDimension();
+    /**
+     * Set the "zoom factor" for the logical microphone.
+     *
+     * If multiple microphones are in use, the provided zoom factor must be
+     * treated as a preference for their combined field dimension. The zoom
+     * factor must be within the range of [-1.0, 1.0] (see MIC_FIELD_DIMENSION_*
+     * constants).
+     *
+     * @param zoom The preferred field dimension of the microphone capture.
+     * @throws EX_ILLEGAL_ARGUMENT If the dimension value is outside of the range.
+     * @throws EX_ILLEGAL_STATE If the stream has already been closed.
+     * @throws EX_UNSUPPORTED_OPERATION If the operation is not supported.
+     */
+    void setMicrophoneFieldDimension(float zoom);
+
+    /**
      * Update stream metadata.
      *
      * Updates the metadata initially provided at the stream creation.
diff --git a/audio/aidl/android/hardware/audio/core/MicrophoneDynamicInfo.aidl b/audio/aidl/android/hardware/audio/core/MicrophoneDynamicInfo.aidl
new file mode 100644
index 0000000..36cc51f
--- /dev/null
+++ b/audio/aidl/android/hardware/audio/core/MicrophoneDynamicInfo.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+package android.hardware.audio.core;
+
+/**
+ * Structure providing dynamic information on a microphone. This information
+ * changes between recording sessions.
+ */
+@JavaDerive(equals=true, toString=true)
+@VintfStability
+parcelable MicrophoneDynamicInfo {
+    /**
+     * Unique alphanumeric id for the microphone. It must match the id of one of
+     * the 'MicrophoneInfo' entries returned by 'IModule.getMicrophones'.
+     */
+    @utf8InCpp String id;
+
+    @VintfStability
+    @Backing(type="int")
+    enum ChannelMapping {
+        /** Channel not used. */
+        UNUSED = 0,
+        /** Channel is used and the signal is not processed. */
+        DIRECT = 1,
+        /** Channel is used and the signal has some processing. */
+        PROCESSED = 2,
+    }
+    /**
+     * The vector is indexes by zero-based channels of the microphone, thus the
+     * element '0' corresponds to the first channel, '1' is the second, etc. The
+     * vector must contain at least 1 element.
+     */
+    ChannelMapping[] channelMapping;
+}
diff --git a/audio/aidl/android/hardware/audio/core/MicrophoneInfo.aidl b/audio/aidl/android/hardware/audio/core/MicrophoneInfo.aidl
new file mode 100644
index 0000000..3b8c7f3
--- /dev/null
+++ b/audio/aidl/android/hardware/audio/core/MicrophoneInfo.aidl
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+package android.hardware.audio.core;
+
+import android.media.audio.common.AudioDevice;
+
+/**
+ * Structure providing static information on a microphone. This information
+ * never changes during the lifetime of the IModule which owns the microphone.
+ * The information presented in this structure indicates the location and
+ * orientation of the microphone on the device as well as useful information
+ * like frequency response and sensitivity.
+ */
+@JavaDerive(equals=true, toString=true)
+@VintfStability
+parcelable MicrophoneInfo {
+    /**
+     * Unique alphanumeric id for the microphone. It must remain the same across
+     * device reboots. The client must never attempt to parse the value of this
+     * field.
+     */
+    @utf8InCpp String id;
+    /**
+     * Describes the location of the microphone in terms of managed audio devices.
+     */
+    AudioDevice device;
+
+    @VintfStability
+    @Backing(type="int")
+    enum Location {
+        /** Microphone location is unknown. */
+        UNKNOWN = 0,
+        /** The microphone is located on the main body of the device. */
+        MAINBODY = 1,
+        /** The microphone is located on a movable main body of the device. */
+        MAINBODY_MOVABLE = 2,
+        /** The microphone is located on a peripheral. */
+        PERIPHERAL = 3,
+    }
+    /** Location of the microphone in regard to the body of the device */
+    Location location = Location.UNKNOWN;
+
+    /**
+     * This value is used when the group of the microphone is unknown.
+     */
+    const int GROUP_UNKNOWN = -1;
+    /**
+     * An identifier to group related microphones together, for example,
+     * microphones of a microphone array should all belong to the same group.
+     * Note that microphones assigned to 'GROUP_UNKNOWN' do not form a group.
+     */
+    int group = GROUP_UNKNOWN;
+    /**
+     * This value is used when the index in the group of the microphone is
+     * unknown.
+     */
+    const int INDEX_IN_THE_GROUP_UNKNOWN = -1;
+    /**
+     * Index of this microphone within the group. The pair (group, index) must
+     * be unique within the same HAL module, except the pair
+     * (GROUP_UNKNOWN, INDEX_IN_THE_GROUP_UNKNOWN).
+     */
+    int indexInTheGroup = INDEX_IN_THE_GROUP_UNKNOWN;
+
+    @VintfStability
+    parcelable Sensitivity {
+        /** Level in dBFS produced by a 1000 Hz tone at 94 dB SPL. */
+        float leveldBFS;
+        /** Level in dB of the max SPL supported at 1000 Hz */
+        float maxSpldB;
+        /** Level in dB of the min SPL supported at 1000 Hz */
+        float minSpldB;
+    }
+    /**
+     * If provided, must describe acceptable sound pressure levels (SPL)
+     * for a 1 kHz sine wave, and the resulting level in dBFS.
+     */
+    @nullable Sensitivity sensitivity;
+
+    @VintfStability
+    @Backing(type="int")
+    enum Directionality {
+        UNKNOWN = 0,
+        OMNI = 1,
+        BI_DIRECTIONAL = 2,
+        CARDIOID = 3,
+        HYPER_CARDIOID = 4,
+        SUPER_CARDIOID = 5,
+    }
+    /**
+     * The standard polar pattern of the microphone.
+     */
+    Directionality directionality = Directionality.UNKNOWN;
+
+    /**
+     * A (frequency, level) pair. Used to represent frequency response.
+     */
+    @VintfStability
+    parcelable FrequencyResponsePoint {
+        float frequencyHz;
+        float leveldB;
+    }
+    /**
+     * Vector with ordered frequency responses (from low to high frequencies)
+     * with the frequency response of the microphone. Levels are in dB,
+     * relative to level at 1000 Hz.
+     */
+    FrequencyResponsePoint[] frequencyResponse;
+
+    /**
+     * A 3D point used to represent position or orientation of a microphone.
+     */
+    @VintfStability
+    parcelable Coordinate {
+        float x;
+        float y;
+        float z;
+    }
+    /**
+     * If provided, must specify distances of the microphone's capsule, in
+     * meters, from the bottom-left-back corner of the bounding box of device in
+     * its natural orientation (PORTRAIT for phones, LANDSCAPE for tablets, TVs,
+     * etc).
+     */
+    @nullable Coordinate position;
+    /**
+     * If provided, describes the normalized point which defines the main
+     * orientation of the microphone's capsule.
+     * Magnitude = sqrt(x^2 + y^2 + z^2) = 1.
+     */
+    @nullable Coordinate orientation;
+}
diff --git a/audio/aidl/default/Configuration.cpp b/audio/aidl/default/Configuration.cpp
index a3e5ff7..280814f 100644
--- a/audio/aidl/default/Configuration.cpp
+++ b/audio/aidl/default/Configuration.cpp
@@ -243,6 +243,13 @@
                                  AudioChannelLayout::LAYOUT_MONO, 48000, 0, true,
                                  createDeviceExt(AudioDeviceType::IN_MICROPHONE, 0)));
 
+        MicrophoneInfo mic;
+        mic.id = "zero";
+        mic.device = zeroInDevice.ext.get<AudioPortExt::Tag::device>().device;
+        mic.group = 0;
+        mic.indexInTheGroup = 0;
+        c.microphones = std::vector<MicrophoneInfo>{mic};
+
         AudioPort primaryInMix =
                 createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(2, 2));
         primaryInMix.profiles.push_back(
diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index 9dbd61c..1e561d4 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -31,6 +31,7 @@
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
 using aidl::android::media::audio::common::AudioChannelLayout;
+using aidl::android::media::audio::common::AudioDevice;
 using aidl::android::media::audio::common::AudioFormatDescription;
 using aidl::android::media::audio::common::AudioFormatType;
 using aidl::android::media::audio::common::AudioInputFlags;
@@ -136,7 +137,8 @@
         StreamContext temp(
                 std::make_unique<StreamContext::CommandMQ>(1, true /*configureEventFlagWord*/),
                 std::make_unique<StreamContext::ReplyMQ>(1, true /*configureEventFlagWord*/),
-                frameSize, std::make_unique<StreamContext::DataMQ>(frameSize * in_bufferSizeFrames),
+                portConfigIt->format.value(), portConfigIt->channelMask.value(),
+                std::make_unique<StreamContext::DataMQ>(frameSize * in_bufferSizeFrames),
                 asyncCallback, mDebug.streamTransientStateDelayMs);
         if (temp.isValid()) {
             *out_context = std::move(temp);
@@ -149,6 +151,39 @@
     return ndk::ScopedAStatus::ok();
 }
 
+std::vector<AudioDevice> Module::findConnectedDevices(int32_t portConfigId) {
+    std::vector<AudioDevice> result;
+    auto& ports = getConfig().ports;
+    auto portIds = portIdsFromPortConfigIds(findConnectedPortConfigIds(portConfigId));
+    for (auto it = portIds.begin(); it != portIds.end(); ++it) {
+        auto portIt = findById<AudioPort>(ports, *it);
+        if (portIt != ports.end() && portIt->ext.getTag() == AudioPortExt::Tag::device) {
+            result.push_back(portIt->ext.template get<AudioPortExt::Tag::device>().device);
+        }
+    }
+    return result;
+}
+
+std::set<int32_t> Module::findConnectedPortConfigIds(int32_t portConfigId) {
+    std::set<int32_t> result;
+    auto patchIdsRange = mPatches.equal_range(portConfigId);
+    auto& patches = getConfig().patches;
+    for (auto it = patchIdsRange.first; it != patchIdsRange.second; ++it) {
+        auto patchIt = findById<AudioPatch>(patches, it->second);
+        if (patchIt == patches.end()) {
+            LOG(FATAL) << __func__ << ": patch with id " << it->second << " taken from mPatches "
+                       << "not found in the configuration";
+        }
+        if (std::find(patchIt->sourcePortConfigIds.begin(), patchIt->sourcePortConfigIds.end(),
+                      portConfigId) != patchIt->sourcePortConfigIds.end()) {
+            result.insert(patchIt->sinkPortConfigIds.begin(), patchIt->sinkPortConfigIds.end());
+        } else {
+            result.insert(patchIt->sourcePortConfigIds.begin(), patchIt->sourcePortConfigIds.end());
+        }
+    }
+    return result;
+}
+
 ndk::ScopedAStatus Module::findPortIdForNewStream(int32_t in_portConfigId, AudioPort** port) {
     auto& configs = getConfig().portConfigs;
     auto portConfigIt = findById<AudioPortConfig>(configs, in_portConfigId);
@@ -187,6 +222,19 @@
     return ndk::ScopedAStatus::ok();
 }
 
+template <typename C>
+std::set<int32_t> Module::portIdsFromPortConfigIds(C portConfigIds) {
+    std::set<int32_t> result;
+    auto& portConfigs = getConfig().portConfigs;
+    for (auto it = portConfigIds.begin(); it != portConfigIds.end(); ++it) {
+        auto portConfigIt = findById<AudioPortConfig>(portConfigs, *it);
+        if (portConfigIt != portConfigs.end()) {
+            result.insert(portConfigIt->portId);
+        }
+    }
+    return result;
+}
+
 internal::Configuration& Module::getConfig() {
     if (!mConfig) {
         mConfig.reset(new internal::Configuration(internal::getNullPrimaryConfiguration()));
@@ -223,12 +271,16 @@
     idsToConnect.insert(newPatch.sinkPortConfigIds.begin(), newPatch.sinkPortConfigIds.end());
     std::for_each(idsToDisconnect.begin(), idsToDisconnect.end(), [&](const auto& portConfigId) {
         if (idsToConnect.count(portConfigId) == 0) {
-            mStreams.setStreamIsConnected(portConfigId, false);
+            LOG(DEBUG) << "The stream on port config id " << portConfigId << " is not connected";
+            mStreams.setStreamIsConnected(portConfigId, {});
         }
     });
     std::for_each(idsToConnect.begin(), idsToConnect.end(), [&](const auto& portConfigId) {
         if (idsToDisconnect.count(portConfigId) == 0) {
-            mStreams.setStreamIsConnected(portConfigId, true);
+            const auto connectedDevices = findConnectedDevices(portConfigId);
+            LOG(DEBUG) << "The stream on port config id " << portConfigId
+                       << " is connected to: " << ::android::internal::ToString(connectedDevices);
+            mStreams.setStreamIsConnected(portConfigId, connectedDevices);
         }
     });
 }
@@ -468,14 +520,15 @@
         return status;
     }
     context.fillDescriptor(&_aidl_return->desc);
-    auto stream = ndk::SharedRefBase::make<StreamIn>(in_args.sinkMetadata, std::move(context));
+    auto stream = ndk::SharedRefBase::make<StreamIn>(in_args.sinkMetadata, std::move(context),
+                                                     mConfig->microphones);
     if (auto status = stream->init(); !status.isOk()) {
         return status;
     }
     StreamWrapper streamWrapper(stream);
     auto patchIt = mPatches.find(in_args.portConfigId);
     if (patchIt != mPatches.end()) {
-        streamWrapper.setStreamIsConnected(true);
+        streamWrapper.setStreamIsConnected(findConnectedDevices(in_args.portConfigId));
     }
     mStreams.insert(port->id, in_args.portConfigId, std::move(streamWrapper));
     _aidl_return->stream = std::move(stream);
@@ -525,7 +578,7 @@
     StreamWrapper streamWrapper(stream);
     auto patchIt = mPatches.find(in_args.portConfigId);
     if (patchIt != mPatches.end()) {
-        streamWrapper.setStreamIsConnected(true);
+        streamWrapper.setStreamIsConnected(findConnectedDevices(in_args.portConfigId));
     }
     mStreams.insert(port->id, in_args.portConfigId, std::move(streamWrapper));
     _aidl_return->stream = std::move(stream);
@@ -844,6 +897,12 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus Module::getMicrophones(std::vector<MicrophoneInfo>* _aidl_return) {
+    *_aidl_return = mConfig->microphones;
+    LOG(DEBUG) << __func__ << ": returning " << ::android::internal::ToString(*_aidl_return);
+    return ndk::ScopedAStatus::ok();
+}
+
 ndk::ScopedAStatus Module::updateAudioMode(AudioMode in_mode) {
     // No checks for supported audio modes here, it's an informative notification.
     LOG(DEBUG) << __func__ << ": " << toString(in_mode);
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index d7c352f..be5887c 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -18,12 +18,17 @@
 #include <android-base/logging.h>
 #include <utils/SystemClock.h>
 
+#include <Utils.h>
+
 #include "core-impl/Module.h"
 #include "core-impl/Stream.h"
 
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::media::audio::common::AudioDevice;
 using aidl::android::media::audio::common::AudioOffloadInfo;
+using android::hardware::audio::common::getChannelCount;
+using android::hardware::audio::common::getFrameSizeInBytes;
 
 namespace aidl::android::hardware::audio::core {
 
@@ -35,13 +40,17 @@
         desc->reply = mReplyMQ->dupeDesc();
     }
     if (mDataMQ) {
-        desc->frameSizeBytes = mFrameSize;
-        desc->bufferSizeFrames =
-                mDataMQ->getQuantumCount() * mDataMQ->getQuantumSize() / mFrameSize;
+        const size_t frameSize = getFrameSize();
+        desc->frameSizeBytes = frameSize;
+        desc->bufferSizeFrames = mDataMQ->getQuantumCount() * mDataMQ->getQuantumSize() / frameSize;
         desc->audio.set<StreamDescriptor::AudioBuffer::Tag::fmq>(mDataMQ->dupeDesc());
     }
 }
 
+size_t StreamContext::getFrameSize() const {
+    return getFrameSizeInBytes(mFormat, mChannelLayout);
+}
+
 bool StreamContext::isValid() const {
     if (mCommandMQ && !mCommandMQ->isValid()) {
         LOG(ERROR) << "command FMQ is invalid";
@@ -51,8 +60,8 @@
         LOG(ERROR) << "reply FMQ is invalid";
         return false;
     }
-    if (mFrameSize == 0) {
-        LOG(ERROR) << "frame size is not set";
+    if (getFrameSize() == 0) {
+        LOG(ERROR) << "frame size is invalid";
         return false;
     }
     if (mDataMQ && !mDataMQ->isValid()) {
@@ -530,11 +539,64 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
 }
 
-StreamIn::StreamIn(const SinkMetadata& sinkMetadata, StreamContext context)
-    : StreamCommon<SinkMetadata, StreamInWorker>(sinkMetadata, std::move(context)) {
+namespace {
+static std::map<AudioDevice, std::string> transformMicrophones(
+        const std::vector<MicrophoneInfo>& microphones) {
+    std::map<AudioDevice, std::string> result;
+    std::transform(microphones.begin(), microphones.end(), std::inserter(result, result.begin()),
+                   [](const auto& mic) { return std::make_pair(mic.device, mic.id); });
+    return result;
+}
+}  // namespace
+
+StreamIn::StreamIn(const SinkMetadata& sinkMetadata, StreamContext context,
+                   const std::vector<MicrophoneInfo>& microphones)
+    : StreamCommon<SinkMetadata, StreamInWorker>(sinkMetadata, std::move(context)),
+      mMicrophones(transformMicrophones(microphones)) {
     LOG(DEBUG) << __func__;
 }
 
+ndk::ScopedAStatus StreamIn::getActiveMicrophones(
+        std::vector<MicrophoneDynamicInfo>* _aidl_return) {
+    std::vector<MicrophoneDynamicInfo> result;
+    std::vector<MicrophoneDynamicInfo::ChannelMapping> channelMapping{
+            getChannelCount(mContext.getChannelLayout()),
+            MicrophoneDynamicInfo::ChannelMapping::DIRECT};
+    for (auto it = mConnectedDevices.begin(); it != mConnectedDevices.end(); ++it) {
+        if (auto micIt = mMicrophones.find(*it); micIt != mMicrophones.end()) {
+            MicrophoneDynamicInfo dynMic;
+            dynMic.id = micIt->second;
+            dynMic.channelMapping = channelMapping;
+            result.push_back(std::move(dynMic));
+        }
+    }
+    *_aidl_return = std::move(result);
+    LOG(DEBUG) << __func__ << ": returning " << ::android::internal::ToString(*_aidl_return);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus StreamIn::getMicrophoneDirection(MicrophoneDirection* _aidl_return) {
+    LOG(DEBUG) << __func__;
+    (void)_aidl_return;
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus StreamIn::setMicrophoneDirection(MicrophoneDirection in_direction) {
+    LOG(DEBUG) << __func__ << ": direction " << toString(in_direction);
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus StreamIn::getMicrophoneFieldDimension(float* _aidl_return) {
+    LOG(DEBUG) << __func__;
+    (void)_aidl_return;
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus StreamIn::setMicrophoneFieldDimension(float in_zoom) {
+    LOG(DEBUG) << __func__ << ": zoom " << in_zoom;
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
 StreamOut::StreamOut(const SourceMetadata& sourceMetadata, StreamContext context,
                      const std::optional<AudioOffloadInfo>& offloadInfo)
     : StreamCommon<SourceMetadata, StreamOutWorker>(sourceMetadata, std::move(context)),
diff --git a/audio/aidl/default/include/core-impl/Configuration.h b/audio/aidl/default/include/core-impl/Configuration.h
index d5cd30b..95adcd7 100644
--- a/audio/aidl/default/include/core-impl/Configuration.h
+++ b/audio/aidl/default/include/core-impl/Configuration.h
@@ -21,12 +21,14 @@
 
 #include <aidl/android/hardware/audio/core/AudioPatch.h>
 #include <aidl/android/hardware/audio/core/AudioRoute.h>
+#include <aidl/android/hardware/audio/core/MicrophoneInfo.h>
 #include <aidl/android/media/audio/common/AudioPort.h>
 #include <aidl/android/media/audio/common/AudioPortConfig.h>
 
 namespace aidl::android::hardware::audio::core::internal {
 
 struct Configuration {
+    std::vector<MicrophoneInfo> microphones;
     std::vector<::aidl::android::media::audio::common::AudioPort> ports;
     std::vector<::aidl::android::media::audio::common::AudioPortConfig> portConfigs;
     std::vector<::aidl::android::media::audio::common::AudioPortConfig> initialConfigs;
diff --git a/audio/aidl/default/include/core-impl/Module.h b/audio/aidl/default/include/core-impl/Module.h
index f7b85ed..3509327 100644
--- a/audio/aidl/default/include/core-impl/Module.h
+++ b/audio/aidl/default/include/core-impl/Module.h
@@ -77,6 +77,7 @@
     ndk::ScopedAStatus setMasterVolume(float in_volume) override;
     ndk::ScopedAStatus getMicMute(bool* _aidl_return) override;
     ndk::ScopedAStatus setMicMute(bool in_mute) override;
+    ndk::ScopedAStatus getMicrophones(std::vector<MicrophoneInfo>* _aidl_return) override;
     ndk::ScopedAStatus updateAudioMode(
             ::aidl::android::hardware::audio::core::AudioMode in_mode) override;
     ndk::ScopedAStatus updateScreenRotation(
@@ -88,9 +89,14 @@
             int32_t in_portConfigId, int64_t in_bufferSizeFrames,
             std::shared_ptr<IStreamCallback> asyncCallback,
             ::aidl::android::hardware::audio::core::StreamContext* out_context);
+    std::vector<::aidl::android::media::audio::common::AudioDevice> findConnectedDevices(
+            int32_t portConfigId);
+    std::set<int32_t> findConnectedPortConfigIds(int32_t portConfigId);
     ndk::ScopedAStatus findPortIdForNewStream(
             int32_t in_portConfigId, ::aidl::android::media::audio::common::AudioPort** port);
     internal::Configuration& getConfig();
+    template <typename C>
+    std::set<int32_t> portIdsFromPortConfigIds(C portConfigIds);
     void registerPatch(const AudioPatch& patch);
     void updateStreamsConnectedState(const AudioPatch& oldPatch, const AudioPatch& newPatch);
 
diff --git a/audio/aidl/default/include/core-impl/Stream.h b/audio/aidl/default/include/core-impl/Stream.h
index 3c96973..7a07eeb 100644
--- a/audio/aidl/default/include/core-impl/Stream.h
+++ b/audio/aidl/default/include/core-impl/Stream.h
@@ -30,7 +30,9 @@
 #include <aidl/android/hardware/audio/core/BnStreamIn.h>
 #include <aidl/android/hardware/audio/core/BnStreamOut.h>
 #include <aidl/android/hardware/audio/core/IStreamCallback.h>
+#include <aidl/android/hardware/audio/core/MicrophoneInfo.h>
 #include <aidl/android/hardware/audio/core/StreamDescriptor.h>
+#include <aidl/android/media/audio/common/AudioDevice.h>
 #include <aidl/android/media/audio/common/AudioOffloadInfo.h>
 #include <fmq/AidlMessageQueue.h>
 #include <system/thread_defs.h>
@@ -61,12 +63,15 @@
 
     StreamContext() = default;
     StreamContext(std::unique_ptr<CommandMQ> commandMQ, std::unique_ptr<ReplyMQ> replyMQ,
-                  size_t frameSize, std::unique_ptr<DataMQ> dataMQ,
-                  std::shared_ptr<IStreamCallback> asyncCallback, int transientStateDelayMs)
+                  const ::aidl::android::media::audio::common::AudioFormatDescription& format,
+                  const ::aidl::android::media::audio::common::AudioChannelLayout& channelLayout,
+                  std::unique_ptr<DataMQ> dataMQ, std::shared_ptr<IStreamCallback> asyncCallback,
+                  int transientStateDelayMs)
         : mCommandMQ(std::move(commandMQ)),
           mInternalCommandCookie(std::rand()),
           mReplyMQ(std::move(replyMQ)),
-          mFrameSize(frameSize),
+          mFormat(format),
+          mChannelLayout(channelLayout),
           mDataMQ(std::move(dataMQ)),
           mAsyncCallback(asyncCallback),
           mTransientStateDelayMs(transientStateDelayMs) {}
@@ -74,7 +79,8 @@
         : mCommandMQ(std::move(other.mCommandMQ)),
           mInternalCommandCookie(other.mInternalCommandCookie),
           mReplyMQ(std::move(other.mReplyMQ)),
-          mFrameSize(other.mFrameSize),
+          mFormat(other.mFormat),
+          mChannelLayout(other.mChannelLayout),
           mDataMQ(std::move(other.mDataMQ)),
           mAsyncCallback(other.mAsyncCallback),
           mTransientStateDelayMs(other.mTransientStateDelayMs) {}
@@ -82,7 +88,8 @@
         mCommandMQ = std::move(other.mCommandMQ);
         mInternalCommandCookie = other.mInternalCommandCookie;
         mReplyMQ = std::move(other.mReplyMQ);
-        mFrameSize = other.mFrameSize;
+        mFormat = std::move(other.mFormat);
+        mChannelLayout = std::move(other.mChannelLayout);
         mDataMQ = std::move(other.mDataMQ);
         mAsyncCallback = other.mAsyncCallback;
         mTransientStateDelayMs = other.mTransientStateDelayMs;
@@ -91,9 +98,15 @@
 
     void fillDescriptor(StreamDescriptor* desc);
     std::shared_ptr<IStreamCallback> getAsyncCallback() const { return mAsyncCallback; }
+    ::aidl::android::media::audio::common::AudioChannelLayout getChannelLayout() const {
+        return mChannelLayout;
+    }
     CommandMQ* getCommandMQ() const { return mCommandMQ.get(); }
     DataMQ* getDataMQ() const { return mDataMQ.get(); }
-    size_t getFrameSize() const { return mFrameSize; }
+    ::aidl::android::media::audio::common::AudioFormatDescription getFormat() const {
+        return mFormat;
+    }
+    size_t getFrameSize() const;
     int getInternalCommandCookie() const { return mInternalCommandCookie; }
     ReplyMQ* getReplyMQ() const { return mReplyMQ.get(); }
     int getTransientStateDelayMs() const { return mTransientStateDelayMs; }
@@ -104,7 +117,8 @@
     std::unique_ptr<CommandMQ> mCommandMQ;
     int mInternalCommandCookie;  // The value used to confirm that the command was posted internally
     std::unique_ptr<ReplyMQ> mReplyMQ;
-    size_t mFrameSize;
+    ::aidl::android::media::audio::common::AudioFormatDescription mFormat;
+    ::aidl::android::media::audio::common::AudioChannelLayout mChannelLayout;
     std::unique_ptr<DataMQ> mDataMQ;
     std::shared_ptr<IStreamCallback> mAsyncCallback;
     int mTransientStateDelayMs;
@@ -193,7 +207,11 @@
                        : ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
     }
     bool isClosed() const { return mWorker.isClosed(); }
-    void setIsConnected(bool connected) { mWorker.setIsConnected(connected); }
+    void setIsConnected(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
+        mWorker.setIsConnected(!devices.empty());
+        mConnectedDevices = devices;
+    }
     ndk::ScopedAStatus updateMetadata(const Metadata& metadata);
 
   protected:
@@ -205,6 +223,7 @@
     Metadata mMetadata;
     StreamContext mContext;
     StreamWorker mWorker;
+    std::vector<::aidl::android::media::audio::common::AudioDevice> mConnectedDevices;
 };
 
 class StreamIn
@@ -214,6 +233,12 @@
         return StreamCommon<::aidl::android::hardware::audio::common::SinkMetadata,
                             StreamInWorker>::close();
     }
+    ndk::ScopedAStatus getActiveMicrophones(
+            std::vector<MicrophoneDynamicInfo>* _aidl_return) override;
+    ndk::ScopedAStatus getMicrophoneDirection(MicrophoneDirection* _aidl_return) override;
+    ndk::ScopedAStatus setMicrophoneDirection(MicrophoneDirection in_direction) override;
+    ndk::ScopedAStatus getMicrophoneFieldDimension(float* _aidl_return) override;
+    ndk::ScopedAStatus setMicrophoneFieldDimension(float in_zoom) override;
     ndk::ScopedAStatus updateMetadata(const ::aidl::android::hardware::audio::common::SinkMetadata&
                                               in_sinkMetadata) override {
         return StreamCommon<::aidl::android::hardware::audio::common::SinkMetadata,
@@ -222,7 +247,10 @@
 
   public:
     StreamIn(const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
-             StreamContext context);
+             StreamContext context, const std::vector<MicrophoneInfo>& microphones);
+
+  private:
+    const std::map<::aidl::android::media::audio::common::AudioDevice, std::string> mMicrophones;
 };
 
 class StreamOut : public StreamCommon<::aidl::android::hardware::audio::common::SourceMetadata,
@@ -261,11 +289,12 @@
                 },
                 mStream);
     }
-    void setStreamIsConnected(bool connected) {
+    void setStreamIsConnected(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
         std::visit(
                 [&](auto&& ws) {
                     auto s = ws.lock();
-                    if (s) s->setIsConnected(connected);
+                    if (s) s->setIsConnected(devices);
                 },
                 mStream);
     }
@@ -288,9 +317,11 @@
         mStreams.insert(std::pair{portConfigId, sw});
         mStreams.insert(std::pair{portId, std::move(sw)});
     }
-    void setStreamIsConnected(int32_t portConfigId, bool connected) {
+    void setStreamIsConnected(
+            int32_t portConfigId,
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
         if (auto it = mStreams.find(portConfigId); it != mStreams.end()) {
-            it->second.setStreamIsConnected(connected);
+            it->second.setStreamIsConnected(devices);
         }
     }
 
diff --git a/audio/aidl/vts/AudioHalBinderServiceUtil.h b/audio/aidl/vts/AudioHalBinderServiceUtil.h
index c8d81b1..b4b4632 100644
--- a/audio/aidl/vts/AudioHalBinderServiceUtil.h
+++ b/audio/aidl/vts/AudioHalBinderServiceUtil.h
@@ -31,7 +31,7 @@
   public:
     ndk::SpAIBinder connectToService(const std::string& serviceName) {
         mServiceName = serviceName;
-        mBinder = ndk::SpAIBinder(AServiceManager_getService(serviceName.c_str()));
+        mBinder = ndk::SpAIBinder(AServiceManager_waitForService(serviceName.c_str()));
         if (mBinder == nullptr) {
             LOG(ERROR) << "Failed to get service " << serviceName;
         } else {
diff --git a/audio/aidl/vts/ModuleConfig.cpp b/audio/aidl/vts/ModuleConfig.cpp
index c081402..7e4b148 100644
--- a/audio/aidl/vts/ModuleConfig.cpp
+++ b/audio/aidl/vts/ModuleConfig.cpp
@@ -28,6 +28,7 @@
 
 using aidl::android::hardware::audio::core::IModule;
 using aidl::android::media::audio::common::AudioChannelLayout;
+using aidl::android::media::audio::common::AudioDeviceType;
 using aidl::android::media::audio::common::AudioEncapsulationMode;
 using aidl::android::media::audio::common::AudioFormatDescription;
 using aidl::android::media::audio::common::AudioFormatType;
@@ -62,6 +63,18 @@
     return {};
 }
 
+// static
+std::vector<aidl::android::media::audio::common::AudioPort> ModuleConfig::getBuiltInMicPorts(
+        const std::vector<aidl::android::media::audio::common::AudioPort>& ports) {
+    std::vector<AudioPort> result;
+    std::copy_if(ports.begin(), ports.end(), std::back_inserter(result), [](const auto& port) {
+        const auto type = port.ext.template get<AudioPortExt::Tag::device>().device.type;
+        return type.connection.empty() && (type.type == AudioDeviceType::IN_MICROPHONE ||
+                                           type.type == AudioDeviceType::IN_MICROPHONE_BACK);
+    });
+    return result;
+}
+
 template <typename T>
 auto findById(const std::vector<T>& v, int32_t id) {
     return std::find_if(v.begin(), v.end(), [&](const auto& p) { return p.id == id; });
@@ -107,38 +120,45 @@
     return result;
 }
 
-std::vector<AudioPort> ModuleConfig::getInputMixPorts() const {
+std::vector<AudioPort> ModuleConfig::getInputMixPorts(bool attachedOnly) const {
     std::vector<AudioPort> result;
-    std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [](const auto& port) {
+    std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [&](const auto& port) {
         return port.ext.getTag() == AudioPortExt::Tag::mix &&
-               port.flags.getTag() == AudioIoFlags::Tag::input;
+               port.flags.getTag() == AudioIoFlags::Tag::input &&
+               (!attachedOnly || !getAttachedSourceDevicesPortsForMixPort(port).empty());
     });
     return result;
 }
 
-std::vector<AudioPort> ModuleConfig::getOutputMixPorts() const {
+std::vector<AudioPort> ModuleConfig::getOutputMixPorts(bool attachedOnly) const {
     std::vector<AudioPort> result;
-    std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [](const auto& port) {
+    std::copy_if(mPorts.begin(), mPorts.end(), std::back_inserter(result), [&](const auto& port) {
         return port.ext.getTag() == AudioPortExt::Tag::mix &&
-               port.flags.getTag() == AudioIoFlags::Tag::output;
+               port.flags.getTag() == AudioIoFlags::Tag::output &&
+               (!attachedOnly || !getAttachedSinkDevicesPortsForMixPort(port).empty());
     });
     return result;
 }
 
 std::vector<AudioPort> ModuleConfig::getNonBlockingMixPorts(bool attachedOnly,
                                                             bool singlePort) const {
-    return findMixPorts(false /*isInput*/, singlePort, [&](const AudioPort& port) {
+    return findMixPorts(false /*isInput*/, attachedOnly, singlePort, [&](const AudioPort& port) {
         return isBitPositionFlagSet(port.flags.get<AudioIoFlags::Tag::output>(),
-                                    AudioOutputFlags::NON_BLOCKING) &&
-               (!attachedOnly || !getAttachedSinkDevicesPortsForMixPort(port).empty());
+                                    AudioOutputFlags::NON_BLOCKING);
     });
 }
 
 std::vector<AudioPort> ModuleConfig::getOffloadMixPorts(bool attachedOnly, bool singlePort) const {
-    return findMixPorts(false /*isInput*/, singlePort, [&](const AudioPort& port) {
+    return findMixPorts(false /*isInput*/, attachedOnly, singlePort, [&](const AudioPort& port) {
         return isBitPositionFlagSet(port.flags.get<AudioIoFlags::Tag::output>(),
-                                    AudioOutputFlags::COMPRESS_OFFLOAD) &&
-               (!attachedOnly || !getAttachedSinkDevicesPortsForMixPort(port).empty());
+                                    AudioOutputFlags::COMPRESS_OFFLOAD);
+    });
+}
+
+std::vector<AudioPort> ModuleConfig::getPrimaryMixPorts(bool attachedOnly, bool singlePort) const {
+    return findMixPorts(false /*isInput*/, attachedOnly, singlePort, [&](const AudioPort& port) {
+        return isBitPositionFlagSet(port.flags.get<AudioIoFlags::Tag::output>(),
+                                    AudioOutputFlags::PRIMARY);
     });
 }
 
@@ -193,7 +213,7 @@
 
 std::optional<ModuleConfig::SrcSinkPair> ModuleConfig::getNonRoutableSrcSinkPair(
         bool isInput) const {
-    const auto mixPorts = getMixPorts(isInput);
+    const auto mixPorts = getMixPorts(isInput, false /*attachedOnly*/);
     std::set<std::pair<int32_t, int32_t>> allowedRoutes;
     for (const auto& route : mRoutes) {
         for (const auto srcPortId : route.sourcePortIds) {
@@ -344,9 +364,10 @@
 }
 
 std::vector<AudioPort> ModuleConfig::findMixPorts(
-        bool isInput, bool singlePort, std::function<bool(const AudioPort&)> pred) const {
+        bool isInput, bool attachedOnly, bool singlePort,
+        const std::function<bool(const AudioPort&)>& pred) const {
     std::vector<AudioPort> result;
-    const auto mixPorts = getMixPorts(isInput);
+    const auto mixPorts = getMixPorts(isInput, attachedOnly);
     for (auto mixPortIt = mixPorts.begin(); mixPortIt != mixPorts.end();) {
         mixPortIt = std::find_if(mixPortIt, mixPorts.end(), pred);
         if (mixPortIt == mixPorts.end()) break;
diff --git a/audio/aidl/vts/ModuleConfig.h b/audio/aidl/vts/ModuleConfig.h
index a85aa7f..7247f3b 100644
--- a/audio/aidl/vts/ModuleConfig.h
+++ b/audio/aidl/vts/ModuleConfig.h
@@ -37,22 +37,32 @@
     static std::optional<aidl::android::media::audio::common::AudioOffloadInfo>
     generateOffloadInfoIfNeeded(
             const aidl::android::media::audio::common::AudioPortConfig& portConfig);
+    static std::vector<aidl::android::media::audio::common::AudioPort> getBuiltInMicPorts(
+            const std::vector<aidl::android::media::audio::common::AudioPort>& ports);
 
     explicit ModuleConfig(aidl::android::hardware::audio::core::IModule* module);
     const ndk::ScopedAStatus& getStatus() const { return mStatus; }
     std::string getError() const { return mStatus.getMessage(); }
 
     std::vector<aidl::android::media::audio::common::AudioPort> getAttachedDevicePorts() const;
+    std::vector<aidl::android::media::audio::common::AudioPort> getAttachedMicrophonePorts() const {
+        return getBuiltInMicPorts(getAttachedDevicePorts());
+    }
     std::vector<aidl::android::media::audio::common::AudioPort> getExternalDevicePorts() const;
-    std::vector<aidl::android::media::audio::common::AudioPort> getInputMixPorts() const;
-    std::vector<aidl::android::media::audio::common::AudioPort> getOutputMixPorts() const;
-    std::vector<aidl::android::media::audio::common::AudioPort> getMixPorts(bool isInput) const {
-        return isInput ? getInputMixPorts() : getOutputMixPorts();
+    std::vector<aidl::android::media::audio::common::AudioPort> getInputMixPorts(
+            bool attachedOnly) const;
+    std::vector<aidl::android::media::audio::common::AudioPort> getOutputMixPorts(
+            bool attachedOnly) const;
+    std::vector<aidl::android::media::audio::common::AudioPort> getMixPorts(
+            bool isInput, bool attachedOnly) const {
+        return isInput ? getInputMixPorts(attachedOnly) : getOutputMixPorts(attachedOnly);
     }
     std::vector<aidl::android::media::audio::common::AudioPort> getNonBlockingMixPorts(
             bool attachedOnly, bool singlePort) const;
     std::vector<aidl::android::media::audio::common::AudioPort> getOffloadMixPorts(
             bool attachedOnly, bool singlePort) const;
+    std::vector<aidl::android::media::audio::common::AudioPort> getPrimaryMixPorts(
+            bool attachedOnly, bool singlePort) const;
 
     std::vector<aidl::android::media::audio::common::AudioPort> getAttachedDevicesPortsForMixPort(
             bool isInput, const aidl::android::media::audio::common::AudioPort& mixPort) const {
@@ -81,14 +91,17 @@
     }
     std::vector<aidl::android::media::audio::common::AudioPortConfig> getPortConfigsForMixPorts()
             const {
-        auto inputs = generateAudioMixPortConfigs(getInputMixPorts(), true, false);
-        auto outputs = generateAudioMixPortConfigs(getOutputMixPorts(), false, false);
+        auto inputs =
+                generateAudioMixPortConfigs(getInputMixPorts(false /*attachedOnly*/), true, false);
+        auto outputs = generateAudioMixPortConfigs(getOutputMixPorts(false /*attachedOnly*/), false,
+                                                   false);
         inputs.insert(inputs.end(), outputs.begin(), outputs.end());
         return inputs;
     }
     std::vector<aidl::android::media::audio::common::AudioPortConfig> getPortConfigsForMixPorts(
             bool isInput) const {
-        return generateAudioMixPortConfigs(getMixPorts(isInput), isInput, false);
+        return generateAudioMixPortConfigs(getMixPorts(isInput, false /*attachedOnly*/), isInput,
+                                           false);
     }
     std::vector<aidl::android::media::audio::common::AudioPortConfig> getPortConfigsForMixPorts(
             bool isInput, const aidl::android::media::audio::common::AudioPort& port) const {
@@ -96,7 +109,8 @@
     }
     std::optional<aidl::android::media::audio::common::AudioPortConfig> getSingleConfigForMixPort(
             bool isInput) const {
-        const auto config = generateAudioMixPortConfigs(getMixPorts(isInput), isInput, true);
+        const auto config = generateAudioMixPortConfigs(
+                getMixPorts(isInput, false /*attachedOnly*/), isInput, true);
         if (!config.empty()) {
             return *config.begin();
         }
@@ -125,8 +139,9 @@
 
   private:
     std::vector<aidl::android::media::audio::common::AudioPort> findMixPorts(
-            bool isInput, bool singlePort,
-            std::function<bool(const aidl::android::media::audio::common::AudioPort&)> pred) const;
+            bool isInput, bool attachedOnly, bool singlePort,
+            const std::function<bool(const aidl::android::media::audio::common::AudioPort&)>& pred)
+            const;
     std::vector<aidl::android::media::audio::common::AudioPortConfig> generateAudioMixPortConfigs(
             const std::vector<aidl::android::media::audio::common::AudioPort>& ports, bool isInput,
             bool singleProfile) const;
diff --git a/audio/aidl/vts/VtsHalAudioCoreTargetTest.cpp b/audio/aidl/vts/VtsHalAudioCoreTargetTest.cpp
index 79b20fe..c0c04f4 100644
--- a/audio/aidl/vts/VtsHalAudioCoreTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioCoreTargetTest.cpp
@@ -59,6 +59,8 @@
 using aidl::android::hardware::audio::core::IStreamIn;
 using aidl::android::hardware::audio::core::IStreamOut;
 using aidl::android::hardware::audio::core::ITelephony;
+using aidl::android::hardware::audio::core::MicrophoneDynamicInfo;
+using aidl::android::hardware::audio::core::MicrophoneInfo;
 using aidl::android::hardware::audio::core::ModuleDebug;
 using aidl::android::hardware::audio::core::StreamDescriptor;
 using aidl::android::hardware::common::fmq::SynchronizedReadWrite;
@@ -192,6 +194,7 @@
         *isSupported = false;
         return;
     }
+    ASSERT_TRUE(status.isOk()) << "Unexpected status from a getter: " << status;
     *isSupported = true;
     for (const auto v : validValues) {
         EXPECT_IS_OK((inst->*setter)(v)) << "for valid value: " << v;
@@ -1567,6 +1570,42 @@
     // TODO: Test that mic mute actually mutes input.
 }
 
+TEST_P(AudioCoreModule, GetMicrophones) {
+    ASSERT_NO_FATAL_FAILURE(SetUpModuleConfig());
+    const std::vector<AudioPort> builtInMicPorts = moduleConfig->getAttachedMicrophonePorts();
+    std::vector<MicrophoneInfo> micInfos;
+    ScopedAStatus status = module->getMicrophones(&micInfos);
+    if (!status.isOk()) {
+        EXPECT_EQ(EX_UNSUPPORTED_OPERATION, status.getExceptionCode());
+        ASSERT_FALSE(builtInMicPorts.empty())
+                << "When the HAL module does not have built-in microphones, IModule.getMicrophones"
+                << " must complete with no error and return an empty list";
+        GTEST_SKIP() << "Microphone info is not supported";
+    }
+    std::set<int32_t> micPortIdsWithInfo;
+    for (const auto& micInfo : micInfos) {
+        const auto& micDevice = micInfo.device;
+        const auto it =
+                std::find_if(builtInMicPorts.begin(), builtInMicPorts.end(), [&](const auto& port) {
+                    return port.ext.template get<AudioPortExt::Tag::device>().device == micDevice;
+                });
+        if (it != builtInMicPorts.end()) {
+            micPortIdsWithInfo.insert(it->id);
+        } else {
+            ADD_FAILURE() << "No device port found with a device specified for the microphone \""
+                          << micInfo.id << "\": " << micDevice.toString();
+        }
+    }
+    if (micPortIdsWithInfo.size() != builtInMicPorts.size()) {
+        std::vector<AudioPort> micPortsNoInfo;
+        std::copy_if(builtInMicPorts.begin(), builtInMicPorts.end(),
+                     std::back_inserter(micPortsNoInfo),
+                     [&](const auto& port) { return micPortIdsWithInfo.count(port.id) == 0; });
+        ADD_FAILURE() << "No MicrophoneInfo is provided for the following microphone device ports: "
+                      << ::android::internal::ToString(micPortsNoInfo);
+    }
+}
+
 TEST_P(AudioCoreModule, UpdateAudioMode) {
     for (const auto mode : ::ndk::enum_range<AudioMode>()) {
         EXPECT_IS_OK(module->updateAudioMode(mode)) << toString(mode);
@@ -1747,13 +1786,11 @@
 
     void OpenOverMaxCount() {
         constexpr bool isInput = IOTraits<Stream>::is_input;
-        auto ports = moduleConfig->getMixPorts(isInput);
+        auto ports = moduleConfig->getMixPorts(isInput, true /*attachedOnly*/);
         bool hasSingleRun = false;
         for (const auto& port : ports) {
             const size_t maxStreamCount = port.ext.get<AudioPortExt::Tag::mix>().maxOpenStreamCount;
-            if (maxStreamCount == 0 ||
-                moduleConfig->getAttachedDevicesPortsForMixPort(isInput, port).empty()) {
-                // No restrictions or no permanently attached devices.
+            if (maxStreamCount == 0) {
                 continue;
             }
             auto portConfigs = moduleConfig->getPortConfigsForMixPorts(isInput, port);
@@ -1878,20 +1915,127 @@
 TEST_IN_AND_OUT_STREAM(ResetPortConfigWithOpenStream);
 TEST_IN_AND_OUT_STREAM(SendInvalidCommand);
 
+namespace aidl::android::hardware::audio::core {
+std::ostream& operator<<(std::ostream& os, const IStreamIn::MicrophoneDirection& md) {
+    os << toString(md);
+    return os;
+}
+}  // namespace aidl::android::hardware::audio::core
+
+TEST_P(AudioStreamIn, ActiveMicrophones) {
+    std::vector<MicrophoneInfo> micInfos;
+    ScopedAStatus status = module->getMicrophones(&micInfos);
+    if (!status.isOk()) {
+        GTEST_SKIP() << "Microphone info is not supported";
+    }
+    const auto ports = moduleConfig->getInputMixPorts(true /*attachedOnly*/);
+    if (ports.empty()) {
+        GTEST_SKIP() << "No input mix ports for attached devices";
+    }
+    for (const auto& port : ports) {
+        const auto portConfig = moduleConfig->getSingleConfigForMixPort(true, port);
+        ASSERT_TRUE(portConfig.has_value()) << "No profiles specified for input mix port";
+        WithStream<IStreamIn> stream(portConfig.value());
+        ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
+        {
+            // The port of the stream is not connected, thus the list of active mics must be empty.
+            std::vector<MicrophoneDynamicInfo> activeMics;
+            EXPECT_IS_OK(stream.get()->getActiveMicrophones(&activeMics));
+            EXPECT_TRUE(activeMics.empty()) << "a stream on an unconnected port returns a "
+                                               "non-empty list of active microphones";
+        }
+        if (auto micDevicePorts = ModuleConfig::getBuiltInMicPorts(
+                    moduleConfig->getAttachedSourceDevicesPortsForMixPort(port));
+            !micDevicePorts.empty()) {
+            auto devicePortConfig = moduleConfig->getSingleConfigForDevicePort(micDevicePorts[0]);
+            WithAudioPatch patch(true /*isInput*/, stream.getPortConfig(), devicePortConfig);
+            ASSERT_NO_FATAL_FAILURE(patch.SetUp(module.get()));
+            std::vector<MicrophoneDynamicInfo> activeMics;
+            EXPECT_IS_OK(stream.get()->getActiveMicrophones(&activeMics));
+            for (const auto& mic : activeMics) {
+                EXPECT_NE(micInfos.end(),
+                          std::find_if(micInfos.begin(), micInfos.end(),
+                                       [&](const auto& micInfo) { return micInfo.id == mic.id; }))
+                        << "active microphone \"" << mic.id << "\" is not listed in "
+                        << "microphone infos returned by the module: "
+                        << ::android::internal::ToString(micInfos);
+                EXPECT_NE(0UL, mic.channelMapping.size())
+                        << "No channels specified for the microphone \"" << mic.id << "\"";
+            }
+        }
+        {
+            // Now the port of the stream is not connected again, re-check that there are no
+            // active microphones.
+            std::vector<MicrophoneDynamicInfo> activeMics;
+            EXPECT_IS_OK(stream.get()->getActiveMicrophones(&activeMics));
+            EXPECT_TRUE(activeMics.empty()) << "a stream on an unconnected port returns a "
+                                               "non-empty list of active microphones";
+        }
+    }
+}
+
+TEST_P(AudioStreamIn, MicrophoneDirection) {
+    using MD = IStreamIn::MicrophoneDirection;
+    const auto ports = moduleConfig->getInputMixPorts(true /*attachedOnly*/);
+    if (ports.empty()) {
+        GTEST_SKIP() << "No input mix ports for attached devices";
+    }
+    bool isSupported = false;
+    for (const auto& port : ports) {
+        const auto portConfig = moduleConfig->getSingleConfigForMixPort(true, port);
+        ASSERT_TRUE(portConfig.has_value()) << "No profiles specified for input mix port";
+        WithStream<IStreamIn> stream(portConfig.value());
+        ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
+        EXPECT_NO_FATAL_FAILURE(
+                TestAccessors<MD>(stream.get(), &IStreamIn::getMicrophoneDirection,
+                                  &IStreamIn::setMicrophoneDirection,
+                                  std::vector<MD>(enum_range<MD>().begin(), enum_range<MD>().end()),
+                                  {}, &isSupported));
+        if (!isSupported) break;
+    }
+    if (!isSupported) {
+        GTEST_SKIP() << "Microphone direction is not supported";
+    }
+}
+
+TEST_P(AudioStreamIn, MicrophoneFieldDimension) {
+    const auto ports = moduleConfig->getInputMixPorts(true /*attachedOnly*/);
+    if (ports.empty()) {
+        GTEST_SKIP() << "No input mix ports for attached devices";
+    }
+    bool isSupported = false;
+    for (const auto& port : ports) {
+        const auto portConfig = moduleConfig->getSingleConfigForMixPort(true, port);
+        ASSERT_TRUE(portConfig.has_value()) << "No profiles specified for input mix port";
+        WithStream<IStreamIn> stream(portConfig.value());
+        ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
+        EXPECT_NO_FATAL_FAILURE(TestAccessors<float>(
+                stream.get(), &IStreamIn::getMicrophoneFieldDimension,
+                &IStreamIn::setMicrophoneFieldDimension,
+                {IStreamIn::MIC_FIELD_DIMENSION_WIDE_ANGLE,
+                 IStreamIn::MIC_FIELD_DIMENSION_WIDE_ANGLE / 2.0f,
+                 IStreamIn::MIC_FIELD_DIMENSION_NO_ZOOM,
+                 IStreamIn::MIC_FIELD_DIMENSION_MAX_ZOOM / 2.0f,
+                 IStreamIn::MIC_FIELD_DIMENSION_MAX_ZOOM},
+                {IStreamIn::MIC_FIELD_DIMENSION_WIDE_ANGLE * 2,
+                 IStreamIn::MIC_FIELD_DIMENSION_MAX_ZOOM * 2,
+                 IStreamIn::MIC_FIELD_DIMENSION_WIDE_ANGLE * 1.1f,
+                 IStreamIn::MIC_FIELD_DIMENSION_MAX_ZOOM * 1.1f, -INFINITY, INFINITY, -NAN, NAN},
+                &isSupported));
+        if (!isSupported) break;
+    }
+    if (!isSupported) {
+        GTEST_SKIP() << "Microphone direction is not supported";
+    }
+}
+
 TEST_P(AudioStreamOut, OpenTwicePrimary) {
-    const auto mixPorts = moduleConfig->getMixPorts(false);
-    auto primaryPortIt = std::find_if(mixPorts.begin(), mixPorts.end(), [](const AudioPort& port) {
-        return port.flags.getTag() == AudioIoFlags::Tag::output &&
-               isBitPositionFlagSet(port.flags.get<AudioIoFlags::Tag::output>(),
-                                    AudioOutputFlags::PRIMARY);
-    });
-    if (primaryPortIt == mixPorts.end()) {
-        GTEST_SKIP() << "No primary mix port";
+    const auto mixPorts =
+            moduleConfig->getPrimaryMixPorts(true /*attachedOnly*/, true /*singlePort*/);
+    if (mixPorts.empty()) {
+        GTEST_SKIP() << "No primary mix port which could be routed to attached devices";
     }
-    if (moduleConfig->getAttachedSinkDevicesPortsForMixPort(*primaryPortIt).empty()) {
-        GTEST_SKIP() << "Primary mix port can not be routed to any of attached devices";
-    }
-    const auto portConfig = moduleConfig->getSingleConfigForMixPort(false, *primaryPortIt);
+    const auto portConfig = moduleConfig->getSingleConfigForMixPort(false, *mixPorts.begin());
     ASSERT_TRUE(portConfig.has_value()) << "No profiles specified for the primary mix port";
     EXPECT_NO_FATAL_FAILURE(OpenTwiceSamePortConfigImpl(portConfig.value()));
 }