发表于 2026年08月09日
armbian安装MPD添加DAC切换记录
结构：
/usr/local/bin/
├── mpd-autostart.sh （你的MPD启动）
└── mpd-manager.py （网页DAC管理）
/etc/
└── mpd.conf （保持不动）
你的 /etc/mpd.conf 不用改，继续使用现在的：
hw:1,0
My BurrBrown DAC
- 安装依赖 执行
apt update
apt install python3-flask alsa-utils -y
2、更新 MPD 启动脚本
编辑：
nano /usr/local/bin/mpd-autostart.sh
完整替换：
#!/bin/bash
mkdir -p /var/log/mpd
mkdir -p /run/mpd
mkdir -p /var/lib/mpd/playlists
mkdir -p /var/lib/mpd/cache
mkdir -p /var/lib/mpd/tag_cache
mkdir -p /media/music
chown -R mpd:audio \
/var/log/mpd \
/run/mpd \
/var/lib/mpd \
/media/music
chmod -R 775 \
/var/log/mpd \
/run/mpd \
/var/lib/mpd \
/media/music
killall -9 mpd 2>/dev/null
rm -f /run/mpd/pid
sleep 2
sudo -u mpd /usr/bin/mpd /etc/mpd.conf
sleep 5
export MPD_HOST="127.0.0.1"
export MPD_PORT="6600"
mpc update || true
sleep 2
mpc clear || true
mpc listall | mpc add || true
mpc repeat on
mpc random off
mpc volume 100
amixer sset Master 100% unmute 2>/dev/null || true
amixer sset PCM 100% unmute 2>/dev/null || true
amixer sset Line 100% unmute 2>/dev/null || true
mpc play 1 || true
chmod +x /usr/local/bin/mpd-autostart.sh
创建：
nano /usr/local/bin/mpd-manager.py
#!/usr/bin/env python3
from flask import Flask,request,redirect,render_template_string
import subprocess
import re
import shutil
import os
app=Flask(__name__)
MPD_CONF="/etc/mpd.conf"
START="/usr/local/bin/mpd-autostart.sh"
HTML="""
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>MPD DAC管理</title>
<style>
body{
background:#111;
color:#fff;
font-family:Arial;
padding:20px;
}
.box{
background:#222;
padding:20px;
border-radius:12px;
margin-bottom:20px;
}
button,select{
font-size:18px;
padding:10px;
width:100%;
}
</style>
</head>
<body>
<h2>CM101H MPD DAC管理</h2>
<div class="box">
<h3>当前配置</h3>
<pre>
{{current}}
</pre>
</div>
<div class="box">
<h3>检测到DAC</h3>
<form method="post" action="/set">
<select name="dac">
{% for d in dacs %}
<option value="{{d.hw}}">
{{d.hw}} {{d.name}}
</option>
{% endfor %}
</select>
<br><br>
<button>
切换DAC
</button>
</form>
</div>
<div class="box">
<a href="/restart">
<button>
重启MPD
</button>
</a>
</div>
</body>
</html>
"""
def run(cmd):
try:
return subprocess.check_output(
cmd,
shell=True,
stderr=subprocess.STDOUT
).decode()
except:
return ""
def scan_dac():
out=run("aplay -l")
result=[]
for line in out.splitlines():
m=re.search(
r"card (\d+): (.*?) \[.*?\], device (\d+):",
line
)
if m:
result.append(
{
"hw":
"hw:%s,%s"%(m.group(1),m.group(3)),
"name":
m.group(2)
}
)
return result
def change_dac(hw,name):
text=open(MPD_CONF).read()
if not os.path.exists(
"/etc/mpd.conf.backup"
):
shutil.copy(
MPD_CONF,
"/etc/mpd.conf.backup"
)
start=text.find("audio_output {")
if start<0:
return
count=0
end=start
for i in range(start,len(text)):
if text[i]=="{":
count+=1
elif text[i]=="}":
count-=1
if count==0:
end=i+1
break
new=f'''
audio_output {{
type "alsa"
name "{name}"
device "{hw}"
mixer_type "none"
auto_resample "no"
auto_channels "no"
auto_format "no"
}}
'''
text=text[:start]+new+text[end:]
open(
MPD_CONF,
"w"
).write(text)
@app.route("/")
def index():
return render_template_string(
HTML,
dacs=scan_dac(),
current=run(
"grep -A12 audio_output /etc/mpd.conf"
)
)
@app.route("/set",methods=["POST"])
def setdac():
hw=request.form["dac"]
name="USB DAC"
for d in scan_dac():
if d["hw"]==hw:
name=d["name"]
change_dac(hw,name)
subprocess.Popen(
START
)
return redirect("/")
@app.route("/restart")
def restart():
subprocess.Popen(
START
)
return redirect("/")
app.run(
host="0.0.0.0",
port=8090
)
chmod +x /usr/local/bin/mpd-manager.py
创建：
nano /etc/systemd/system/mpd-manager.service
[Unit]
Description=MPD Web Manager
After=network.target
[Service]
ExecStart=/usr/bin/python3 /usr/local/bin/mpd-manager.py
Restart=always
[Install]
WantedBy=multi-user.target
systemctl daemon-reload
systemctl enable mpd-manager
systemctl start mpd-manager
http://CM101H_IP:8090
当前:
My BurrBrown DAC
hw:1,0
检测到:
hw:0,0 S905X-P212
hw:1,0 USB AUDIO DAC
自动：
修改mpd.conf
↓
运行 mpd-autostart.sh
↓
MPD重新启动
↓
myMPD继续播放