configs/audio/audio_policy_configuration.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Copyright (C) 2015 The Android Open Source Project
     SPDX-License-Identifier: Apache-2.0
-->

<audioPolicyConfiguration version="1.0" xmlns:xi="http://www.w3.org/2001/XInclude">
    <!-- version section contains a “version” tag in the form “major.minor” e.g version=”1.0” -->

    <!-- Global configuration Decalaration -->
    <globalConfiguration speaker_drc_enabled="false" call_screen_mode_supported="true"/>

    <!-- Modules section:
        There is one section per audio HW module present on the platform.
        Each module section will contains two mandatory tags for audio HAL “halVersion” and “name”.
        The module names are the same as in current .conf file:
                “primary”, “A2DP”, “remote_submix”, “USB”
        Each module will contain the following sections:
        “devicePorts”: a list of device descriptors for all input and output devices accessible via this
        module.
        This contains both permanently attached devices and removable devices.
        “mixPorts”: listing all output and input streams exposed by the audio HAL
        “routes”: list of possible connections between input and output devices or between stream and
        devices.
            "route": is defined by an attribute:
                -"type": <mux|mix> means all sources are mutual exclusive (mux) or can be mixed (mix)
                -"sink": the sink involved in this route
                -"sources": all the sources than can be connected to the sink via vis route
        “attachedDevices”: permanently attached devices.
        The attachedDevices section is a list of devices names. The names correspond to device names
        defined in <devicePorts> section.
        “defaultOutputDevice”: device to be used by default when no policy rule applies
    -->
    <modules>
        <!-- Primary Audio HAL -->
        <module name="primary" halVersion="3.0">
            <attachedDevices>
                <item>Speaker</item>
                <item>Earpiece</item>
                <item>Built-In Mic</item>
                <item>Built-In Back Mic</item>
                <item>FM Tuner In</item>
                <item>Voice Call In</item>
                <item>Echo Ref In</item>
            </attachedDevices>
            <defaultOutputDevice>Speaker</defaultOutputDevice>
            <mixPorts>
                <mixPort name="primary output" role="source" flags="AUDIO_OUTPUT_FLAG_PRIMARY">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="deep_buffer" role="source" flags="AUDIO_OUTPUT_FLAG_DEEP_BUFFER">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="fast" role="source" flags="AUDIO_OUTPUT_FLAG_FAST">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="voip_rx" role="source" flags="AUDIO_OUTPUT_FLAG_VOIP_RX">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                           samplingRates="16000,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                           samplingRates="16000,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="incall_music_uplink" role="source" flags="AUDIO_OUTPUT_FLAG_INCALL_MUSIC">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="primary input" role="sink" maxOpenCount="1" maxActiveCount="1">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </mixPort>
                <mixPort name="mmap_no_irq_in" role="sink" flags="AUDIO_INPUT_FLAG_MMAP_NOIRQ">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </mixPort>
                <mixPort name="voice tx" role="sink" maxOpenCount="1" maxActiveCount="1">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </mixPort>
                <mixPort name="FM Tuner input" role="sink" maxOpenCount="1" maxActiveCount="1">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_VOICE_UPLINK,AUDIO_CHANNEL_IN_VOICE_DNLINK"/>
                </mixPort>
                <mixPort name="voip_tx" role="sink" flags="AUDIO_INPUT_FLAG_VOIP_TX" maxOpenCount="1" maxActiveCount="1">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </mixPort>
                <mixPort name="fast input" role="sink" flags="AUDIO_INPUT_FLAG_FAST" maxOpenCount="1" maxActiveCount="1">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </mixPort>
            </mixPorts>
            <devicePorts>
                <!-- Output devices declaration, i.e. Sink DEVICE PORT -->
                <devicePort tagName="Earpiece" type="AUDIO_DEVICE_OUT_EARPIECE" role="sink">
                   <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_MONO"/>
                   <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_MONO"/>
                </devicePort>
                <devicePort tagName="Speaker" role="sink" type="AUDIO_DEVICE_OUT_SPEAKER">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Wired Headset" type="AUDIO_DEVICE_OUT_WIRED_HEADSET" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Wired Headphones" type="AUDIO_DEVICE_OUT_WIRED_HEADPHONE" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="AUX Digital Out" type="AUDIO_DEVICE_OUT_AUX_DIGITAL" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="BT SCO" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="BT SCO Headset" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="BT SCO Car Kit" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Analog Dock Headset" type="AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Digital Dock Headset" type="AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="FM Tuner Out" type="AUDIO_DEVICE_OUT_FM" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>

                <devicePort tagName="USB Primary Out" type="AUDIO_DEVICE_OUT_BUS" role="sink" address="usb_phone_call">
                    <profile name="" format="AUDIO_FORMAT_PCM_32_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Built-In Mic" type="AUDIO_DEVICE_IN_BUILTIN_MIC" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="Built-In Back Mic" type="AUDIO_DEVICE_IN_BACK_MIC" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="Wired Headset Mic" type="AUDIO_DEVICE_IN_WIRED_HEADSET" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </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="8000,16000" channelMasks="AUDIO_CHANNEL_IN_MONO"/>
                </devicePort>
                <devicePort tagName="AUX Digital In" type="AUDIO_DEVICE_IN_AUX_DIGITAL" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="FM Tuner In" type="AUDIO_DEVICE_IN_FM_TUNER" role="source">
                     <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="Echo Ref In" type="AUDIO_DEVICE_IN_ECHO_REFERENCE" role="source">
                     <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="USB Primary In" type="AUDIO_DEVICE_IN_BUS" role="source" address="usb_phone_call">
                     <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </devicePort>
                <devicePort tagName="Voice Call In" type="AUDIO_DEVICE_IN_VOICE_CALL" role="source">
                     <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,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 output,deep_buffer,fast,mmap_no_irq_out,voip_rx,Voice Call In"/>
                <route type="mix" sink="Speaker"
                       sources="primary output,deep_buffer,fast,mmap_no_irq_out,FM Tuner In,voip_rx,Voice Call In"/>
                <route type="mix" sink="Wired Headset"
                       sources="primary output,deep_buffer,fast,mmap_no_irq_out,FM Tuner In,voip_rx,Voice Call In"/>
                <route type="mix" sink="Wired Headphones"
                       sources="primary output,deep_buffer,fast,mmap_no_irq_out,FM Tuner In,voip_rx,Voice Call In"/>
                <route type="mix" sink="AUX Digital Out"
                       sources="primary output"/>
                <route type="mix" sink="BT SCO"
                       sources="primary output,deep_buffer,fast,voip_rx,Voice Call In"/>
                <route type="mix" sink="BT SCO Headset"
                       sources="primary output,deep_buffer,fast,voip_rx,Voice Call In"/>
                <route type="mix" sink="BT SCO Car Kit"
                       sources="primary output,deep_buffer,fast,voip_rx,Voice Call In"/>
                <route type="mix" sink="Analog Dock Headset"
                       sources="primary output"/>
                <route type="mix" sink="Digital Dock Headset"
                       sources="primary output"/>
                <route type="mix" sink="FM Tuner Out"
                       sources="primary output"/>
                <route type="mix" sink="USB Primary Out"
                       sources="primary output,Voice Call In"/>
                <route type="mix" sink="primary input"
                       sources="Built-In Mic,Built-In Back Mic,Wired Headset Mic,BT SCO Headset Mic,AUX Digital In,USB Primary In,Echo Ref In"/>
                <route type="mix" sink="mmap_no_irq_in"
                       sources="Built-In Mic,Built-In Back Mic,Wired Headset Mic"/>
                <route type="mix" sink="voice tx"
                       sources="Voice Call In"/>
                <route type="mix" sink="FM Tuner input"
                       sources="FM Tuner In"/>
                <route type="mix" sink="voip_tx"
                       sources="Built-In Mic,Built-In Back Mic,Wired Headset Mic,BT SCO Headset Mic,AUX Digital In,USB Primary In"/>
                <route type="mix" sink="fast input"
                       sources="Built-In Mic,Built-In Back Mic,Wired Headset Mic,BT SCO Headset Mic,AUX Digital In,USB Primary In"/>
            </routes>

        </module>

        <!-- BT Audio HAL -->
        <xi:include href="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>