You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.0 KiB
131 lines
3.0 KiB
#
|
|
#
|
|
# 当前配置文件生效后会产生如下效果
|
|
# 1. 通过amixer controls,可以看到如下音量控制器,其中通过Master Volume控制的是主音量,
|
|
# default_playback用于在唤醒的时候降低背景声音。
|
|
# root@firefly:~# amixer controls
|
|
# numid=1,iface=MIXER,name='Master Volume'
|
|
# numid=2,iface=MIXER,name='Ch1 Volume'
|
|
# numid=3,iface=MIXER,name='Ch2 Volume'
|
|
# numid=4,iface=MIXER,name='default_playback'
|
|
# numid=5,iface=MIXER,name='wakeup_playback'
|
|
#
|
|
# 2. 通过aplay播放音频文件时，会自动通过default_playback设备播放，即其他应用程序例如chrome播放音频的时候也会自动使用这个设备
|
|
# 3. 通过amixer控制音量时候，无需通过-c指定声卡编号
|
|
# 4. 通过amixer通过default_playback控制音量来实现唤醒时降低背景声音。
|
|
# 5. 通过amixer通过Master控制音量来实现对系统音量大小的控制。
|
|
#
|
|
|
|
pcm.!default {
|
|
type plug
|
|
slave.pcm "default_playback"
|
|
}
|
|
ctl.!default {
|
|
type hw
|
|
card 2
|
|
}
|
|
pcm.default_playback {
|
|
type softvol
|
|
slave {
|
|
pcm "xa8326"
|
|
}
|
|
control {
|
|
name "default_playback"
|
|
card 2
|
|
}
|
|
min_dB -40.0
|
|
max_dB 0.0
|
|
resolution 100
|
|
}
|
|
pcm.wakeup_playback {
|
|
type softvol
|
|
slave {
|
|
pcm "xa8326"
|
|
}
|
|
control {
|
|
name "wakeup_playback"
|
|
card 2
|
|
}
|
|
min_dB -40.0
|
|
max_dB 0.0
|
|
resolution 100
|
|
}
|
|
# 放音设备
|
|
pcm.xa8326 {
|
|
type plug
|
|
slave {
|
|
pcm {
|
|
type dmix
|
|
ipc_key 321456 # any unique value
|
|
ipc_key_add_uid true
|
|
slave {
|
|
pcm "hw:2,0"
|
|
period_time 100000 # 100ms
|
|
format S16_LE
|
|
channels 2
|
|
}
|
|
}
|
|
rate 48000
|
|
format S16_LE
|
|
channels 2
|
|
}
|
|
}
|
|
|
|
# 重采样
|
|
pcm.recorder {
|
|
type plug
|
|
slave {
|
|
pcm "recorder5ch"
|
|
rate 48000
|
|
format S16_LE
|
|
channels 5
|
|
}
|
|
rate 16000
|
|
format S16_LE
|
|
channels 5
|
|
}
|
|
pcm.recorder5ch {
|
|
type plug
|
|
slave {
|
|
pcm {
|
|
type multi
|
|
slaves.xa8326.pcm "hw:2,0"
|
|
slaves.xa8326.channels 2
|
|
slaves.pdm.pcm "hw:1,0"
|
|
slaves.pdm.channels 8
|
|
|
|
bindings.0.slave pdm
|
|
bindings.0.channel 0
|
|
|
|
bindings.1.slave pdm
|
|
bindings.1.channel 1
|
|
|
|
bindings.2.slave pdm
|
|
bindings.2.channel 5
|
|
|
|
bindings.3.slave pdm
|
|
bindings.3.channel 6
|
|
|
|
bindings.4.slave xa8326
|
|
bindings.4.channel 0
|
|
|
|
# bindings.5.slave pdm
|
|
# bindings.5.channel 5
|
|
|
|
# bindings.6.slave pdm
|
|
# bindings.6.channel 6
|
|
|
|
# bindings.7.slave pdm
|
|
# bindings.7.channel 7
|
|
|
|
# bindings.8.slave xa8326
|
|
# bindings.8.channel 0
|
|
|
|
# bindings.9.slave xa8326
|
|
# bindings.9.channel 1
|
|
}
|
|
rate 48000
|
|
format S16_LE
|
|
channels 5
|
|
}
|
|
}
|