For anyone interested, here is how to do the same with the built-in
audio card in Pi 3 (less the mono downmix, look above if you want to add
it).
As of today, and quite unfortunately *you have to comment out*
"audio_pwm_mode=2" in config.txt. PCP has a tendency to reinstate that
setting when you select "analog audio" output for Squeezelite. Check the
setting is still disabled if suddenly mixing doesn't work anymore.
Since AQ is rather poor without "audio_pwm_mode=2", I'd recommend
enabling "disable_audio_dither=1".
Here's hoping audio_pwm_mode will come out of beta one day; it looks
like the goals for general release are to slash GPU usage and offer
concurrent access.
With that done, the following gives concurrent access to the audio card
(I tested with 2 streams) and separate volume controls:
Code:
--------------------
# default - Generated by piCorePlayer
pcm.!default {
type plug
slave.pcm "hw:0,0"
}
# PCP3.2: squeezelite gets set to use this device ("-o equal")
# when equalizer is activated. Same name, new type of device.
# This softvol allows to ramp down-up music when an application
# plays another sound.
pcm.equal {
type softvol
slave.pcm equal_real
control.name musicvol
control.card 0
}
# Same story here: ramp up-down the sounds sent by applications
pcm.gong {
type softvol
slave.pcm equal_real
control.name gongvol
control.card 0
}
pcm.equal_real {
type plug;
slave.pcm plugequal
}
pcm.plugequal {
type equal;
slave.pcm "plughw:0,0"
controls "/home/tc/.alsaequal.bin"
library "/usr/local/lib/ladspa/caps.so"
}
ctl.equal {
type equal;
controls "/home/tc/.alsaequal.bin"
library "/usr/local/lib/ladspa/caps.so"
}
--------------------
(and the same weird but harmless double-free error as reported above.)
HTH
3 SB 3 Libratone Loop, Zipp Mini iPeng (iPhone + iPad) LMS 7.9
(linux) with plugins: CD Player, WaveInput, Triode's BBC iPlayer by bpa
IRBlaster by Gwendesign (Felix) Server Power Control by Gordon
Harris Smart Mix, Music Walk With Me, What Was That Tune? by Michael
Herger PowerSave by Jason Holtzapple Song Info, Song Lyrics by
Erland Isaksson AirPlay Bridge by philippe_44 WeatherTime by Martin
Rehfeld Auto Dim Display, SaverSwitcher, ContextMenu by Peter Watkins.
------------------------------------------------------------------------
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