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melange
Tux's lil' helper
Joined: 16 Sep 2004
Posts: 110
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 Posted: Thu Dec 23, 2004 10:57 pm Post subject: Dmix - this time I want it to work |
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after over a month of searching and (obviously) no succes I hope that you guys can help me 
To make a long story short:
*I have a ASUS a7n8x-x motherboard whit onboard soundcard (nforce2).
*I want to be able to play multiple sounds simultaneously
*I read (most of) this thread (https://forums.gentoo.org/viewtopic.php?t=122076) - but it didn't help 
here's what I've done:
*Updated alsa
| Code: |
arvid@becky arvid $ qpkg -I -v | grep alsa
media-libs/alsa-oss-1.0.7 *
media-libs/alsa-lib-1.0.7 *
media-sound/alsa-headers-1.0.7 *
media-sound/alsa-utils-1.0.6 *
media-sound/alsaplayer-0.99.76 *
media-plugins/gst-plugins-alsa-0.8.5 *
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*Edited my ~/.asoundrc - so now it looks like this:
| Code: |
pcm.dmixer {
type dmix
ipc_key 1024
slave {
pcm "hw:0,0"
period_time 0
period_size 1024
buffer_size 8192
rate 44100
}
bindings {
0 0
1 1
}
}
pcm.dsp0 {
type plug
slave.pcm "dmixer"
}
pcm.!default {
type plug
slave.pcm "dmixer"
}
pcm.default {
type plug
slave.pcm "dmixer"
}
ctl.mixer0 {
type hw
card 0
}
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*restarted alsa (it didn't say I should anywhere - but I guess it doesn't hurt)
BUT - it's still not possible to play to songs at once :/ and mplayer is just running whitout sound when it's started like this:
| Code: | mplayer -ao alsa9:default movie.avi
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I guess it's the ~/.asoundrc which is the problem - but I must admit I have no idea about what it does (just did copy/paste)
I hope you can help - thanks in advance
melange |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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| Posted: Thu Dec 23, 2004 11:02 pm Post subject: |
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not an nforce base card (using ac97 intel) but this one works for me with multi-sound playing...
| Code: |
# Set default sound card
# Useful so that all settings can be changed to a different card here.
pcm.snd_card {
type hw
card 0
}
# Allow mixing of multiple output streams to this device
pcm.dmix {
type dmix
ipc_key 1024
slave.pcm "snd_card"
slave {
# This stuff provides some fixes for latency issues.
# buffer_size should be set for your audio chipset.
period_time 0
period_size 1024
buffer_size 8192
}
bindings {
0 0
1 1
}
}
# Allow reading from the default device.
# Also known as record or capture.
pcm.dsnoop {
type dsnoop
ipc_key 2048
slave.pcm "snd_card"
## Possible artsd full duplex fix:
# slave {
# period_time 0
# period_size 1024
# buffer_size 8192
# }
bindings {
0 0
1 1
}
}
# This is what we want as our default device
# a fully duplex (read/write) audio device.
pcm.duplex {
type asym
playback.pcm "dmix"
capture.pcm "dsnoop"
}
###################
# CONVERSION PLUG #
###################
# Setting the default pcm device allows the conversion
# rate to be selected on the fly.
# duplex mode allows any alsa enabled app to read/write
# to the dmix plug (Fixes a problem with wine).
pcm.!default {
type plug
slave.pcm "duplex"
}
# Apparently this is wrong (breaks mplayer for me opening the device)
#ctl.!default {
# type plug
# slave.pcm "snd_card"
#}
########
# AOSS #
########
# OSS dsp0 device
pcm.dsp0 {
type plug
slave.pcm "duplex"
}
# OSS control for dsp0 (needed?...this might not be useful)
ctl.dsp0 {
type plug
slave.pcm "snd_card"
}
# OSS control for dsp0 (default old OSS is mixer0)
ctl.mixer0 {
type plug
slave.pcm "snd_card"
}
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evoweiss
Veteran
Joined: 07 Sep 2003
Posts: 1678
Location: Edinburgh, UK
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| Posted: Fri Dec 24, 2004 1:10 am Post subject: Re: Dmix - this time I want it to work |
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| melange wrote: | after over a month of searching and (obviously) no succes I hope that you guys can help me
.
.
.
*restarted alsa (it didn't say I should anywhere - but I guess it doesn't hurt) |
There is no need to restart alsa. Also, are you specifying that your audio be outputted to dmix? I'm not currently home, so I am unable to check, but you need to specify this for some programs. In the meanwhile, trying seeing whether you can use aplay and direct the output to dmix (somebody ought to have posted on this somewhere and I've helped folks out before).
| Quote: |
| Code: | mplayer -ao alsa9:default movie.avi
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The current version of mplayer has a different ao flag that you need to set. It changes with major version changes. Currently, for me at least, it's alsa1x. You can check what it is by typing in mplayer -ao help.
My .asoundrc file is:
| Code: |
pcm.dmixer {
type dmix
ipc_key 1024
slave {
pcm "hw:0,0"
period_time 0
period_size 1024
buffer_size 8192
rate 44100
}
bindings {
0 0
1 1
}
}
pcm.dsp0 {
type plug
slave.pcm "dmixer"
}
pcm.!default {
type plug
slave.pcm "dmixer"
}
pcm.default {
type plug
slave.pcm "dmixer"
}
ctl.mixer0 {
type hw
card 0
}
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and my .mplayer/config file has the following setting for audio:
I'd try getting mplayer able to play multiple streams first (try it with music) and then move on to getting your music player working as well. My music player, amarok with the xine engine, automatically plays correctly.
Alex |
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melange
Tux's lil' helper
Joined: 16 Sep 2004
Posts: 110
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| Posted: Fri Dec 24, 2004 11:43 am Post subject: |
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Well - now I've been trying a lot of different ~/.asoundrc (and looking alot at http://gentoo-wiki.com/HOWTO_ALSA_sound_mixer_aka_dmix ) - and almost with the same result.
| Code: |
$ alsaplayer -o alsa -d plug:dmix some.mp3 &
$ aplay -D plug:dmix some.wav &
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Well - this is actually working  they are both playing at the same time
now mplayer plays as normal - i.e. with sound but no mixing
this plays Song.mp3 (why shouldn't it?)
| Code: |
aoss mpg123 Song.mp3
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this also plays the song - but superfast (4min song in 2sec)
right now my ~/.asoundrc looks like this:
| Code: |
pcm.dsp0 {
type plug
slave.pcm "hw:0"
}
# or:
# pcm.dsp0 pcm.default
# if "default" hasn't been redefined
ctl.mixer0 {
type hw
card 0
}
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if I change ~/.asoundrc to
| Code: |
pcm.dsp0 {
type plug
slave.pcm "dmix"
}
# mixer0 can stay unchanged, because it isn't used anyway, I guess ;)
ctl.mixer0 {
type hw
card 0
}
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mpg123 gives me this error:
| Code: |
arvid@becky Xmas $ aoss mpg123 Shakin\'\ Stevens\ -\ Marry\ Christmas\ Everyone.mp3
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2 and 3.
Version 0.59s-r8 (2000/Oct/27). Written and copyrights by Michael Hipp.
Uses code from various people. See 'README' for more!
THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY! USE AT YOUR OWN RISK!
Title : Merry Christmas Everyone Artist: Shakin' Stevens
Album : Absolute Christmas Year : 2001
Comment: Genre : Unknown
Playing MPEG stream from Shakin' Stevens - Marry Christmas Everyone.mp3 ...
Found new ID3 Header
MPEG 1.0 layer III, 192 kbit/s, 44100 Hz stereo
Audiodevice: No supported audio rate found for 44100 Hz and 2 channels !
Use '-vv' to list all possible audio rates and
choose a supported rate with the '-r <rate>' option.
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any suggestions? |
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evoweiss
Veteran
Joined: 07 Sep 2003
Posts: 1678
Location: Edinburgh, UK
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| Posted: Fri Dec 24, 2004 3:04 pm Post subject: |
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| melange wrote: |
| Code: |
$ alsaplayer -o alsa -d plug:dmix some.mp3 &
$ aplay -D plug:dmix some.wav &
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Well - this is actually working they are both playing at the same time
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Ok, this means your dmix is working and the mixer is called dmix in the way you set it up.
| Quote: |
now mplayer plays as normal - i.e. with sound but no mixing
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Change to ao=alsa1x:dmix and it should work.
| Quote: |
this plays Song.mp3 (why shouldn't it?)
| Code: |
aoss mpg123 Song.mp3
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this also plays the song - but superfast (4min song in 2sec)
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Wouldn't aoss tell alsa to mimic the oss which is something you don't really want?
As per your other questions, I'm really not sure about them as I have a bit of a different setup than you do and I don't understand all the ins and outs of dmix. However, you're making progress. I'm sure somebody will be able to help you with that.
Best,
Alex |
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melange
Tux's lil' helper
Joined: 16 Sep 2004
Posts: 110
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| Posted: Fri Dec 24, 2004 4:18 pm Post subject: |
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| evoweiss wrote: |
As per your other questions, I'm really not sure about them as I have a bit of a different setup than you do and I don't understand all the ins and outs of dmix. |
But that's okey ao=alsa1x:dmix did the trick and it's working now 
thanks a lot |
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evoweiss
Veteran
Joined: 07 Sep 2003
Posts: 1678
Location: Edinburgh, UK
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| Posted: Fri Dec 24, 2004 4:24 pm Post subject: |
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| melange wrote: |
But that's okey ao=alsa1x:dmix did the trick and it's working now
thanks a lot |
Great... quick tip is that, if you happen to upgrade mplayer and sound stops working, it's probably because they renamed the audio output flag to something else. It took me some time to figure this out.
Best,
Alex |
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