[root@flame defaultuser]# find 2>/dev/null / -name audio_policy_configuration.xml
/vendor/etc/audio_policy_configuration.xml
[root@flame defaultuser]# cat /vendor/etc/audio_policy_configuration.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Copyright (C) 2018 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.
-->

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

    <modules>
        <module name="primary" halVersion="2.0">
            <attachedDevices>
                <item>Speaker</item>
                <item>Speaker Safe</item>
                <item>Earpiece</item>
                <item>Telephony Tx</item>
                <item>Built-In Mic</item>
                <item>Built-In Back Mic</item>
                <item>Telephony Rx</item>
            </attachedDevices>
            <defaultOutputDevice>Speaker</defaultOutputDevice>
            <mixPorts>
                <mixPort name="primary output" role="source" flags="AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="raw" role="source" flags="AUDIO_OUTPUT_FLAG_RAW|AUDIO_OUTPUT_FLAG_FAST">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="hifi_playback" role="source" />
                <mixPort name="deep_buffer" role="source"
                        flags="AUDIO_OUTPUT_FLAG_DEEP_BUFFER">
                    <profile name="" format="AUDIO_FORMAT_PCM_24_BIT_PACKED"
                             samplingRates="44100,48000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="compressed_offload" role="source"
                         flags="AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD|AUDIO_OUTPUT_FLAG_NON_BLOCKING">
                    <profile name="" format="AUDIO_FORMAT_MP3"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO,AUDIO_CHANNEL_OUT_MONO"/>
                    <profile name="" format="AUDIO_FORMAT_AAC_LC"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000,64000,88200,96000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO,AUDIO_CHANNEL_OUT_MONO"/>
                    <profile name="" format="AUDIO_FORMAT_AAC_HE_V1"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000,64000,88200,96000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO,AUDIO_CHANNEL_OUT_MONO"/>
                    <profile name="" format="AUDIO_FORMAT_AAC_HE_V2"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO,AUDIO_CHANNEL_OUT_MONO"/>
                </mixPort>
                <mixPort name="voice_tx" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,48000" channelMasks="AUDIO_CHANNEL_OUT_MONO,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="voip_rx" role="source"
                         flags="AUDIO_OUTPUT_FLAG_VOIP_RX">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                           samplingRates="8000,16000,32000,48000" 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_16_BIT"
                             samplingRates="8000,16000,48000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
                <mixPort name="primary input" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_8_24_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_INDEX_MASK_3"/>
                </mixPort>
                <mixPort name="hotword input" role="sink" flags="AUDIO_INPUT_FLAG_HW_HOTWORD" maxActiveCount="0" >
                    <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"/>
                </mixPort>
                <mixPort name="fast input" role="sink" flags="AUDIO_INPUT_FLAG_FAST">
                    <profile name="" format="AUDIO_FORMAT_PCM_8_24_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_INDEX_MASK_3"/>
                </mixPort>
                <mixPort name="hifi_input" role="sink" />
                <mixPort name="voice_rx" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,48000" channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
                </mixPort>
                <mixPort name="mmap_no_irq_in" role="sink" flags="AUDIO_INPUT_FLAG_MMAP_NOIRQ">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,11025,12000,16000,22050,24000,32000,44100,48000"
                             channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO,AUDIO_CHANNEL_IN_FRONT_BACK,AUDIO_CHANNEL_INDEX_MASK_3"/>
                </mixPort>
                <mixPort name="voip_tx" role="sink"
                         flags="AUDIO_INPUT_FLAG_VOIP_TX">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="8000,16000,32000,48000" channelMasks="AUDIO_CHANNEL_IN_MONO"/>
                </mixPort>
                <mixPort name="haptic" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="48000"
                             channelMasks="AUDIO_CHANNEL_OUT_STEREO_HAPTIC_A" />
                </mixPort>
            </mixPorts>
            <devicePorts>
                <devicePort tagName="Earpiece" type="AUDIO_DEVICE_OUT_EARPIECE" role="sink">
                </devicePort>
                <devicePort tagName="Speaker" type="AUDIO_DEVICE_OUT_SPEAKER" role="sink">
                </devicePort>
                <devicePort tagName="Speaker Safe" type="AUDIO_DEVICE_OUT_SPEAKER_SAFE" role="sink">
                </devicePort>
                <devicePort tagName="BT SCO" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO" role="sink">
                </devicePort>
                <devicePort tagName="BT SCO Headset" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET" role="sink">
                </devicePort>
                <devicePort tagName="BT SCO Car Kit" type="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT" role="sink">
                </devicePort>
                <devicePort tagName="Telephony Tx" type="AUDIO_DEVICE_OUT_TELEPHONY_TX" role="sink">
                </devicePort>
                <devicePort tagName="USB Device Out" type="AUDIO_DEVICE_OUT_USB_DEVICE" role="sink">
                </devicePort>
                <devicePort tagName="USB Headset Out" type="AUDIO_DEVICE_OUT_USB_HEADSET" role="sink">
                </devicePort>
                <devicePort tagName="BT A2DP Out" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP" role="sink"
                            encodedFormats="AUDIO_FORMAT_LDAC AUDIO_FORMAT_APTX AUDIO_FORMAT_APTX_HD AUDIO_FORMAT_AAC AUDIO_FORMAT_SBC">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000,88200,96000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="BT A2DP Headphones" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES" role="sink"
                            encodedFormats="AUDIO_FORMAT_LDAC AUDIO_FORMAT_APTX AUDIO_FORMAT_APTX_HD AUDIO_FORMAT_AAC AUDIO_FORMAT_SBC">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000,88200,96000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="BT A2DP Speaker" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER" role="sink"
                            encodedFormats="AUDIO_FORMAT_LDAC AUDIO_FORMAT_APTX AUDIO_FORMAT_APTX_HD AUDIO_FORMAT_AAC AUDIO_FORMAT_SBC">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100,48000,88200,96000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
                <devicePort tagName="Built-In Mic" type="AUDIO_DEVICE_IN_BUILTIN_MIC" role="source">
                </devicePort>
                <devicePort tagName="Built-In Back Mic" type="AUDIO_DEVICE_IN_BACK_MIC" role="source">
                </devicePort>
                <devicePort tagName="BT SCO Headset Mic" type="AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET" role="source">
                </devicePort>
                <devicePort tagName="Telephony Rx" type="AUDIO_DEVICE_IN_TELEPHONY_RX" role="source">
                </devicePort>
                <!-- TODO: Enable multi-channel recording -->
                <devicePort tagName="USB Device In" type="AUDIO_DEVICE_IN_USB_DEVICE" role="source">
                </devicePort>
                <devicePort tagName="USB Headset In" type="AUDIO_DEVICE_IN_USB_HEADSET" role="source">
                </devicePort>
            </devicePorts>
            <routes>
                <route type="mix" sink="Earpiece"
                       sources="primary output,raw,deep_buffer,mmap_no_irq_out,voip_rx"/>
                <route type="mix" sink="Speaker"
                       sources="primary output,raw,deep_buffer,compressed_offload,mmap_no_irq_out,voip_rx,haptic"/>
                <route type="mix" sink="Speaker Safe"
                       sources="primary output,raw,deep_buffer,compressed_offload,mmap_no_irq_out,voip_rx,haptic"/>
                <route type="mix" sink="BT SCO"
                       sources="primary output,raw,deep_buffer,voip_rx,haptic"/>
                <route type="mix" sink="BT SCO Headset"
                       sources="primary output,raw,deep_buffer,voip_rx,haptic"/>
                <route type="mix" sink="BT SCO Car Kit"
                       sources="primary output,raw,deep_buffer,voip_rx,haptic"/>
                <route type="mix" sink="USB Device Out"
                       sources="primary output,raw,deep_buffer,compressed_offload,hifi_playback,mmap_no_irq_out,voip_rx,haptic"/>
                <route type="mix" sink="USB Headset Out"
                       sources="primary output,raw,deep_buffer,compressed_offload,hifi_playback,mmap_no_irq_out,voip_rx,haptic"/>
                <route type="mix" sink="Telephony Tx"
                       sources="voice_tx,incall_music_uplink"/>
                <route type="mix" sink="primary input"
                       sources="Built-In Mic,Built-In Back Mic,BT SCO Headset Mic,USB Device In,USB Headset In"/>
                <route type="mix" sink="hotword input"
                       sources="Built-In Mic,Built-In Back Mic,BT SCO Headset Mic,USB Device In,USB Headset In"/>
                <route type="mix" sink="fast input"
                       sources="Built-In Mic,Built-In Back Mic,BT SCO Headset Mic,USB Device In,USB Headset In"/>
                <route type="mix" sink="voice_rx"
                       sources="Telephony Rx"/>
                <route type="mix" sink="hifi_input" sources="USB Device In,USB Headset In" />
                <route type="mix" sink="mmap_no_irq_in"
                       sources="Built-In Mic,Built-In Back Mic,USB Device In,USB Headset In"/>
                <route type="mix" sink="voip_tx"
                       sources="Built-In Mic,Built-In Back Mic,BT SCO Headset Mic,USB Device In,USB Headset In"/>
                <route type="mix" sink="BT A2DP Out"
                       sources="primary output,deep_buffer,compressed_offload,voip_rx,haptic"/>
                <route type="mix" sink="BT A2DP Headphones"
                       sources="primary output,deep_buffer,compressed_offload,voip_rx,haptic"/>
                <route type="mix" sink="BT A2DP Speaker"
                       sources="primary output,deep_buffer,compressed_offload,voip_rx,haptic"/>
            </routes>
        </module>

        <!-- A2DP Input Audio HAL -->
        <xi:include href="a2dp_in_audio_policy_configuration.xml"/>

        <!-- Usb Audio HAL -->
        <module name="usb" halVersion="2.0">
            <mixPorts>
                <mixPort name="usb_accessory output" role="source">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </mixPort>
            </mixPorts>
            <devicePorts>
                <devicePort tagName="USB Host Out" type="AUDIO_DEVICE_OUT_USB_ACCESSORY" role="sink">
                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
                             samplingRates="44100" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                </devicePort>
            </devicePorts>
            <routes>
                <route type="mix" sink="USB Host Out"
                       sources="usb_accessory output"/>
            </routes>
        </module>

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

        <!-- Bluetooth Audio HAL for hearing aid -->
        <xi:include href="bluetooth_hearing_aid_audio_policy_configuration.xml"/>

    </modules>

    <!-- Volume section -->

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

</audioPolicyConfiguration>