audio_platform_info.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
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<audio_platform_info>
    <acdb_ids>
        <device name="SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES" acdb_id="501" />

        <device name="SND_DEVICE_OUT_VOICE_HANDSET" acdb_id="14" />
        <device name="SND_DEVICE_OUT_VOICE_SPEAKER" acdb_id="10" />
        <device name="SND_DEVICE_OUT_VOICE_HEADPHONES" acdb_id="18" />

        <device name="SND_DEVICE_IN_HANDSET_MIC" acdb_id="702" />
        <device name="SND_DEVICE_IN_SPEAKER_MIC" acdb_id="110" />
        <device name="SND_DEVICE_IN_HEADSET_MIC" acdb_id="116" />

        <device name="SND_DEVICE_IN_VOICE_DMIC" acdb_id="38" />
        <device name="SND_DEVICE_IN_CAMCORDER_MIC" acdb_id="122" />
    </acdb_ids>

    <backend_names>
        <device name="SND_DEVICE_OUT_HEADPHONES" backend="headphones" />
        <device name="SND_DEVICE_OUT_VOICE_HEADPHONES" backend="headphones" />
        <device name="SND_DEVICE_OUT_SPEAKER" backend="speaker" />
        <device name="SND_DEVICE_OUT_VOICE_SPEAKER" backend="speaker" />
        <device name="SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES" backend="speaker-and-headphones" />
    </backend_names>

    <pcm_ids>
        <!-- empty -->
    </pcm_ids>

    <device_names>
        <!-- empty -->
    </device_names>
</audio_platform_info>