https://www.alsa-project.org/main/api.php?action=feedcontributions&feedformat=atom&user=Ainan 2026-04-08T01:55:41Z User contributions MediaWiki 1.39.0 https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1473 2008-03-01T23:41:36Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides a pair of cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> The consequence of this is, that you have to start the problematic application (for example a MMAP-only game using snd-pcm-oss) first.<br /> {{Note|<br /> first application (using card 0, device 0, substream 0):<br /> aplay -D hw:0,0,0 play.wav<br /> <br /> second application (using card 0, device 1, substream 0):<br /> arecord -D hw:0,1,0 record.wav<br /> |Example}}<br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1472 2008-03-01T21:38:56Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides a pair of cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> The consequence of this is, that you have to start the problematic application (for example a MMAP-only game using snd-pcm-oss) first.<br /> {{Note|<br /> first application (using card 0, device 0, substream 0):<br /> aplay -D hw:0,0,0 play.wav<br /> <br /> second application (using card 0, device 1, substream 0):<br /> arecord -D hw:0,1,0 record.wav<br /> |Example}}<br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1471 2008-03-01T17:30:37Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> The consequence of this is, that you have to start the problematic application (for example a MMAP-only game using snd-pcm-oss) first.<br /> {{Note|<br /> first application (using card 0, device 0, substream 0):<br /> aplay -D hw:0,0,0 play.wav<br /> <br /> second application (using card 0, device 1, substream 0):<br /> arecord -D hw:0,1,0 record.wav<br /> |Example}}<br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1470 2008-03-01T17:24:30Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> The consequence of this is, that you have to start the problematic application (for example a MMAP-only game using snd-pcm-oss) first.<br /> <br /> first application (using card 0, device 0, substream 0):<br /> aplay -D hw:0,0,0 play.wav<br /> <br /> second application (using card 0, device 1, substream 0):<br /> arecord -D hw:0,1,0 record.wav<br /> <br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1469 2008-03-01T17:09:17Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> The consequence of this is, that you have to start the problematic application (for example a MMAP-only game using snd-pcm-oss) first.<br /> <br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1468 2008-03-01T16:32:20Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> Therefore no rate, format or channel number conversion is done.<br /> <br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1467 2008-03-01T16:30:13Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams, which means, you can have up to 8 independent loopback connections.<br /> The first application opening one device, will force the second application, trying to open the other device, to use its established parameters.<br /> <br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan https://www.alsa-project.org/main/index.php?title=Matrix:Module-aloop&diff=1466 2008-03-01T16:16:19Z

<p>Ainan: /* aloop driver */</p> <hr /> <div>[[Category:Architecture-x86]]<br /> <br /> {| align=&quot;right&quot;<br /> | __TOC__<br /> |}<br /> <br /> ==aloop driver==<br /> This driver provides 2 cross-connected devices, forming a full-duplex loopback soundcard.<br /> Each device can have up to 8 substreams.<br /> <br /> {{Modinfo<br /> |module=aloop<br /> |description=A loopback soundcard<br /> |author=Jaroslav Kysela &lt;perex@suse.cz&gt;<br /> |depends=snd-pcm,snd-page-alloc,snd,snd<br /> |index:Index value for loopback soundcard. (array of int)<br /> |id:ID string for loopback soundcard. (array of charp)<br /> |enable:Enable this loopback soundcard. (array of bool)<br /> |pcm_devs:PCM devices # (0-4) for loopback driver. (array of int)<br /> |pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)<br /> }}<br /> <br /> {{Matrix:Soundcard|name=loopback|module=aloop}}</div>

Ainan