Mandatorial options for the pcm device config

The current pcm device config AuRa_Recorder looks like this

ipc_key = random.randint(1111111, 9999999)
config = f"""pcm.{self.PCM_DEVICE_NAME} {{
    type dsnoop
    ipc_key {ipc_key}
    slave {{
        pcm "{pcm_device}"
        channels 2
    }}
    hint.description "Dsnoop AuRa Recorder used to record the playout"
}}"""

What audio options do we have to insert here dynamically? Check and test.