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List:       kde-bugs-dist
Subject:    [Bug 119311] New: digital playback is blocking sound device / dmix
From:       Thorsten Hirsch <t.hirsch () web ! de>
Date:       2005-12-31 15:10:15
Message-ID: 20051231161013.119311.t.hirsch () web ! de
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http://bugs.kde.org/show_bug.cgi?id=119311         
           Summary: digital playback is blocking sound device / dmix not
                    working
           Product: kscd
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: aseigo kde org
        ReportedBy: t.hirsch web de


Version:            (using KDE KDE 3.5.0)
Installed from:    Unlisted Binary Package
OS:                Linux

When using kscd with digital playback my audio device is blocked during playback.
For example, this is the output of mplayer:

alsa-init: 1 soundcard found, using: default
ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave
alsa-init: playback open error: Device or resource busy

You see, I'm using alsa/dmix, I've created /etc/asound.conf for software mixing, \
which is working in other applications. arts is disabled, I've also selected alsa in \
kscd and tried if it works when I specify /dev/sound/audio as playback device, but it \
doesn't.

This is my /etc/asound.conf:
# Die Soundkarte wird festgelegt.
pcm.snd_card {
    type hw
    card 0
    device 0
}

# Das dmix-Plugin wird definiert.
pcm.dmixer {
    type dmix
    ipc_key 1024
    ipc_perm 0666       # andere Benutzer können dmix gleichzeitig nutzen
    slave.pcm "snd_card"
    slave {
        # buffer_size kann bei Problemen der jeweiligen Karte angepasst werden.
        period_time 0
        period_size 512
        buffer_size 32768
    }
    bindings {
        0 0
        1 1
    }
}

# Dies definiert unser dmix-Plugin als Standard für alle ALSA-Programme.
pcm.!default {
    type plug
    slave.pcm "dmixer"
}

########
# AOSS #
########

# DSP wird simuliert und benutzt das dmix-Plugin.
pcm.dsp "dmixer"
pcm.dsp1 "dmixer"

# OSS-Steuerung für dsp0 (falls es benötigt wird...)
ctl.dsp {
    type plug
    slave.pcm "snd_card"
}

# OSS-Steuerung für dsp0 (falls es benötigt wird...)
ctl.mixer {
    type plug
    slave.pcm "snd_card"
}


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