bpa wrote:
>
> 1. what does "arecord -L" say about dsnoop ?
>
Code:
--------------------
pi@wega:~ $ arecord -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=Device
USB Audio Device, USB Audio
Default Audio Device
sysdefault:CARD=Device
USB Audio Device, USB Audio
Default Audio Device
front:CARD=Device,DEV=0
USB Audio Device, USB Audio
Front speakers
surround21:CARD=Device,DEV=0
USB Audio Device, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Device,DEV=0
USB Audio Device, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=Device,DEV=0
USB Audio Device, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Device,DEV=0
USB Audio Device, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Device,DEV=0
USB Audio Device, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Device,DEV=0
USB Audio Device, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Device,DEV=0
USB Audio Device, USB Audio
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=Device,DEV=0
USB Audio Device, USB Audio
Direct sample mixing device
dsnoop:CARD=Device,DEV=0
USB Audio Device, USB Audio
Direct sample snooping device
hw:CARD=Device,DEV=0
USB Audio Device, USB Audio
Direct hardware device without any conversions
plughw:CARD=Device,DEV=0
USB Audio Device, USB Audio
Hardware device with all software conversions
--------------------
>
> 2. What is it configured in .asoundrc or /usr/share/alsa/alsa.conf or
> wherever your Alsa is configured.
I understand that it's configured in /usr/share/alsa/alsa.conf:
Code:
--------------------
defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 0
defaults.pcm.subdevice -1
defaults.pcm.nonblock 1
defaults.pcm.compat 0
defaults.pcm.minperiodtime 5000 # in us
defaults.pcm.ipc_key 5678293
defaults.pcm.ipc_gid audio
defaults.pcm.ipc_perm 0660
defaults.pcm.dmix.max_periods 0
defaults.pcm.dmix.rate 48000
defaults.pcm.dmix.format "unchanged"
defaults.pcm.dmix.card defaults.pcm.card
defaults.pcm.dmix.device defaults.pcm.device
defaults.pcm.dsnoop.card defaults.pcm.card
defaults.pcm.dsnoop.device defaults.pcm.device
--------------------
I just tried to make the USB card default (0), following
https://raspberrypi.stackexchange.com/questions/40831/how-do-i-configure-my-sound-for-jasper-on-raspbian-jessie
Code:
--------------------
# This sets the index value of the cards but doesn't reorder.
options snd_usb_audio index=0
options snd_bcm2835 index=1
# Does the reordering.
options snd slots=snd_usb_audio,snd_bcm2835
--------------------
This worked:
Code:
--------------------
pi@wega:~ $ cat /proc/asound/modules
0 snd_usb_audio
1 snd_bcm2835
--------------------
which seems to basically have resolved the dsnoop issue:
Code:
--------------------
pi@wega:~ $ arecord -f cd -c 2 -D dsnoop foobar.wav
Recording WAVE 'foobar.wav' : Signed 16 bit Little Endian, Rate 44100 Hz,
Stereo
Warning: rate is not accurate (requested = 44100Hz, got = 48000Hz)
please, try the plug plugin (-Dplug:dsnoop)
--------------------
I can't however test (working remotely) whether my line-in -> LiquidSoap
-> Icecast2 -> LMS setup still works after this changes
PCP (always latest version) on RasPi 3 with PhatDac (player & server)
PCP on several RasPis 2 +3
2 Airplay speakers (Sony SA-NS510) integrated via Airplay Bridge Plugin
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