You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: alsa.rs
    path of file: ./repos/librespot/playback/src/audio_backend
    
    the code of the file until where you have to start completion: use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
use crate::config::AudioFormat;
use crate::convert::Converter;
use crate::decoder::AudioPacket;
use crate::{NUM_CHANNELS, SAMPLE_RATE};
use alsa::device_name::HintIter;
use alsa::pcm::{Access, Format, Frames, HwParams, PCM};
use alsa::{Direction, ValueOr};
use std::process::exit;
use thiserror::Error;

const MAX_BUFFER: Frames = (SAMPLE_RATE / 2) as Frames;
const MIN_BUFFER: Frames = (SAMPLE_RATE / 10) as Frames;
const ZERO_FRAMES: Frames = 0;

const MAX_PERIOD_DIVISOR: Frames = 4;
const MIN_PERIOD_DIVISOR: Frames = 10;

#[derive(Debug, Error)]
enum AlsaError {
    #[error("<AlsaSink> Device {device} Unsupported Format {alsa_format:?} ({format:?}), {e}")]
    UnsupportedFormat {
        device: String,
        alsa_format: Format,
        format: AudioFormat,
        e: alsa::Error,
    },

    #[error("<AlsaSink> Device {device} Unsupported Channel Count {channel_
    
fn list_compatible_devices() -> SinkResult<()> {
    let i = HintIter::new_str(None, "pcm").map_err(AlsaError::Parsing)?;

    println!("\n\n\tCompatible alsa device(s):\n");
    println!("\t------------------------------------------------------\n");

    for a in i {
        if let Some(Direction::Playback) = a.direction {
            if let Some(name) = a.name {
                if let Ok(pcm) = PCM::new(&name, Direction::Playback, false) {
                    if let Ok(hwp) = HwParams::any(&pcm) {
                        // Only show devices that support
                        // 2 ch 44.1 Interleaved.

                        if hwp.set_access(Access::RWInterleaved).is_ok()
                            && hwp.set_rate(SAMPLE_RATE, ValueOr::Nearest).is_ok()
                            && hwp.set_channels(NUM_CHANNELS as u32).is_ok()
                        {
                            let mut supported_formats = vec![];

                            for f in &[
                                AudioFormat::S16,
                                AudioFormat::S24,
                                AudioFormat::S24_3,
                                AudioFormat::S32,
                                AudioFormat::F32,
                                AudioFormat::F64,
                            ] {
                                if hwp.test_format(Format::from(*f)).is_ok() {
                                    supported_formats.push(format!("{f:?}"));
                                }
                            }

                            if !supported_formats.is_empty() {
                                println!("\tDevice:\n\n\t\t{name}\n");

                                println!(
                                    "\tDescription:\n\n\t\t{}\n",
                                    a.desc.unwrap_or_default().replace('\n', "\n\t\t")
                                );

                                println!(
                                    "\tSupported Format(s):\n\n\t\t{}\n",
                                    supported_formats.join(" ")
                                );

                                println!(
                                    "\t------------------------------------------------------\n"
                                );
                            }
                        }
                    };
                }
            }
        }
    }

    Ok(())
}