alsa

最新推荐文章于 2025-07-28 00:39:42 发布

原创最新推荐文章于 2025-07-28 00:39:42 发布 · 107 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#playback #hook #path

/etc/asound.conf

pcm.AndroidPlayback_Speaker {
        type hooks
        slave.pcm default
        hooks.0 {
                type ctl_elems

                hook_args [
                        {
                                name 'DAC2 Analog Playback Volume'
                                value [9 9]
                                lock true
                                preserve true
                                optional false
                        }
                        {
                                name 'Earpiece Mixer AudioL2'
                                value 'off'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'DAC2 Digital Coarse Playback Volume'
                                value [1 1]
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'DAC2 Digital Fine Playback Volume'
                                value [54 54]
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HandsfreeR Switch'
                                value 'off'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HandsfreeL Switch'
                                value 'off'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HandsfreeR Mux'
                                value 'AudioR2'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HandsfreeL Mux'
                                value 'AudioL2'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HeadsetR Mixer AudioR2'
                                value 'off'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'HeadsetL Mixer AudioL2'
                                value 'off'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'PredriveR Mixer AudioR2'
                                value 'on'
                                lock false
                                preserve true
                                optional false
                        }
                        {
                                name 'PredriveL Mixer AudioL2'
                                value 'on'
                                lock false
                                preserve true
                                optional false
                        }
                ]
        }
}

修改配置文件能够打开或关闭 path 上的 widget

alsa_amixer cset name='HandsfreeL Mux' 0
alsa_amixer cset name='HandsfreeR Mux' 0
alsa_amixer cset name='PredriveL Mixer AudioL2' 0
alsa_amixer cset name='PredriveR Mixer AudioR2' 0
alsa_amixer cset name='HeadsetL Mixer AudioL2' 0
alsa_amixer cset name='HeadsetR Mixer AudioR2' 0

alsa_amixer cset name='Earpiece Mixer AudioL2' 1
alsa_amixer cset name='Analog Left Capture Route Main mic' 1
alsa_amixer cset name='Analog Right Capture Route Sub mic' 1
alsa_amixer cset name='Left2 Analog Loopback Switch' 1
alsa_amixer cset name='Right2 Analog Loopback Switch' 1

alsa git

http://opensource.wolfsonmicro.com/cgi-bin/gitweb.cgi?p=linux-2.6-asoc.git;a=tree;hb=dev