config/audio/audio_policy_configuration.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<audioPolicyConfiguration version="1.0" xmlns:xi="http://www.w3.org/2001/XInclude">

    <globalConfiguration speaker_drc_enabled="true"/>

    <modules>
        <module name="primary" halVersion="3.0">
            <attachedDevices>
                <item>Earpiece</item>
                <item>Speaker</item>
                <item>Built-In Mic</item>
                <item>Built-In Back Mic</item>
                <item>Voice Call Mic</item>
            </attachedDevices>

            <defaultOutputDevice>Speaker</defaultOutputDevice>

            <mixPorts>
                <mixPort name="primary-out" role="source" flags="AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_DEEP_BUFFER">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="fast" role="source" flags="AUDIO_OUTPUT_FLAG_FAST">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="primary-in" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </mixPort>
            </mixPorts>
            <devicePorts>
                <!-- Output devices declaration, i.e. Sink DEVICE PORT -->
                <devicePort tagName="Earpiece" role="sink" type="AUDIO_DEVICE_OUT_EARPIECE">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_MONO"/>
                </devicePort>
                <devicePort tagName="Speaker" role="sink" type="AUDIO_DEVICE_OUT_SPEAKER">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Wired Headset" role="sink" type="AUDIO_DEVICE_OUT_WIRED_HEADSET">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Wired Headphone" role="sink" type="AUDIO_DEVICE_OUT_WIRED_HEADPHONE">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Bt Sco" role="sink" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Bt Sco Headset" role="sink" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Bt Sco Car Kit" role="sink" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT">
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                            samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Aux Device Out" role="sink" type="AUDIO_DEVICE_OUT_AUX_DIGITAL">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000,64000,88200,96000,128000,176400,192000"
                             channelMasks="AUDIO_CHANNEL_OUT_MONO,AUDIO_CHANNEL_OUT_STEREO,AUDIO_CHANNEL_OUT_2POINT1,AUDIO_CHANNEL_OUT_QUAD,AUDIO_CHANNEL_OUT_PENTA,AUDIO_CHANNEL_OUT_5POINT1,AUDIO_CHANNEL_OUT_6POINT1,AUDIO_CHANNEL_OUT_7POINT1"/>
                </devicePort>
                <!-- Input devices declaration, i.e. source DEVICE PORT -->
                <devicePort tagName="Built-In Mic" type="AUDIO_DEVICE_IN_BUILTIN_MIC" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="Built-In Back Mic" type="AUDIO_DEVICE_IN_BACK_MIC" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="Wired Headset Mic" type="AUDIO_DEVICE_IN_WIRED_HEADSET" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="Bt Sco Headset Mic" type="AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="Aux Device In" type="AUDIO_DEVICE_IN_AUX_DIGITAL" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="Voice Call Mic" type="AUDIO_DEVICE_IN_VOICE_CALL" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
                <devicePort tagName="FM Mic" type="AUDIO_DEVICE_IN_FM_TUNER" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </devicePort>
            </devicePorts>
            <!-- route declaration, i.e. list all available sources for a given sink -->
            <routes>
                <route type="mix" sink="Earpiece"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Speaker"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Wired Headset"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Wired Headphone"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Bt Sco"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Bt Sco Headset"
                       sources="primary-out,fast"/>
                <route type="mix" sink="Bt Sco Car Kit"
                       sources="primary-out,fast"/>
                <route type="mix" sink="primary-in"
                       sources="Built-In Mic,Built-In Back Mic,Wired Headset Mic,Bt Sco Headset Mic,Aux Device In,Voice Call Mic,FM Mic"/>
            </routes>

        </module>

        <!-- A2dp Audio HAL -->
        <xi:include href="/vendor/etc/a2dp_in_audio_policy_configuration.xml"/>

        <!-- Bluetooth Audio HAL -->
        <xi:include href="/vendor/etc/bluetooth_audio_policy_configuration.xml"/>

        <!-- Usb Audio HAL -->
        <xi:include href="usb_audio_policy_configuration.xml"/>

        <!-- Remote Submix Audio HAL -->
        <xi:include href="r_submix_audio_policy_configuration.xml"/>

    </modules>
    <!-- End of Modules section -->

    <!-- Volume section -->

    <xi:include href="audio_policy_volumes.xml"/>
    <xi:include href="default_volume_tables.xml"/>

    <!-- End of Volume section -->

</audioPolicyConfiguration>