Trying to record optic audio in.
If 'arecord -L' only shows one iec958 as "Digital Audio Output", will I
be able to record?
Output from 'arecord -l' shows hw:0,1, so I have tired many things, but
it feels like I'm guessing.
alsamix -> F4 shows:
"< IEC9 8 >" "Capture", "Capture", "Digital", "Input So"
>From some reading, I tried to set "Input So" to line, with no luck.
I have tried many arecord incantations:
arecord -D hw:0,1 -f dat -t wave -d10 foo.wav
Recording WAVE 'foo.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
arecord: pcm_read:1347: read error: Input/output error
arecord -D cards.pcm.iec958 -f dat -t wav -d10 foo.wav
Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
arecord: pcm_read:1347: read error: Input/output error
arecord -d 10 -f cd -t wav -D copy foobar.wav
Recording WAVE 'foobar.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
arecord -d 10 -f dat -t wav -D copy foobar.wav
Recording WAVE 'foobar.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
---------------
System Details:
---------------
Sound card: Embedded VIA VT1708 on pico-itx mother board.
kernel: 2.6.23-gentoo-r3
Driver: in-kernel alsa
Kernel ALSA config:
Device Drivers --->
Sound --->
<*> Sound card support
Advanced Linux Sound Architecture --->
<M> Advanced Linux Sound Architecture
<M> Sequencer support
< > Sequencer dummy client
<M> OSS Mixer API
<M> OSS PCM (digital audio) API
[*] OSS PCM (digital audio) API - Include plugin system
[*] OSS Sequencer API
<M> RTC Timer support
[*] Use RTC as default sequencer timer
[ ] Dynamic device file minor numbers
[*] Support old ALSA API
[ ] Verbose procfs contents
[ ] Verbose printk
[ ] Debug
Generic devices --->
PCI devices --->
<M> Intel HD Audio
<M> VIA 82C686A/B, 8233/8235 AC97 Controller
<M> VIA 82C686A/B, 8233 based Modems
Installed packages:
media-libs/alsa-lib-1.0.15
media-libs/alsa-oss-1.0.15
media-plugins/alsa-plugins-1.0.15
media-sound/alsa-firmware-1.0.15
media-sound/alsa-headers-1.0.15
media-sound/alsa-tools-1.0.15
media-sound/alsa-utils-1.0.15
#-------------------------
arecord -L
front:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
Front speakers
surround40:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=VT82xx,DEV=0
HDA VIA VT82xx, VT1708 Digital
IEC958 (S/PDIF) Digital Audio Output
null
Discard all samples (playback) or generate zero samples (capture)
#-------------------------
arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: VT82xx [HDA VIA VT82xx], device 0: VT1708 Analog [VT1708 Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
card 0: VT82xx [HDA VIA VT82xx], device 1: VT1708 Digital [VT1708
Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
#-------------------------
amixer info
Card default 'VT82xx'/'HDA VIA VT82xx at 0x9fffc000 irq 20'
Mixer name : 'VIA VIA VT1708'
Components : 'HDA:11061708'
Controls : 21
Simple ctrls : 10
#-------------------------
/usr/bin/mhwaveedit
<ALSA recording buffer overrun>
<ALSA recording buffer overrun>
<ALSA recording buffer overrun>
<ALSA recording buffer overrun>
#-------------------------
lshw
<SNIP>
*-multimedia
description: Audio device
product: VIA High Definition Audio Controller
vendor: VIA Technologies, Inc.
physical id: 1
bus info: pci@0000:80:01.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=HDA Intel latency=0 module=snd_h
</SNIP>
#--------------------------
cat ~/.asoundrc
pcm.!default {
type plug
slave {
rate 48000
pcm "spdif"
}
}
pcm.copy {
type plug
slave {
pcm hw
}
route_policy copy
}
#--------------------------
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