From mboxrd@z Thu Jan  1 00:00:00 1970
From: Laurent Georget <lgeorget2@club-internet.fr>
Subject: Re: help for a levelmeter
Date: Fri, 18 Oct 2002 11:27:05 +0200
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To: Devel Alsa <alsa-devel@lists.sourceforge.net>
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Abramo Bagnara wrote:
> Jack O'Quin wrote:
> 
>>Abramo Bagnara <abramo.bagnara@libero.it> writes:
>>
>>
>>>The correct plugin has already been written and available inside
>>>alsa-lib.
>>>
>>>The name is pcm_meter, it's lockless and perfectly integrated with ALSA
>>>PCM chains.
>>>
>>>A sample implementation for curses level meter is already available and
>>>working.
>>>
>>>It's very simple to add other *-meters, scopes, etc.
>>
>>That's great!
>>
>>Is there any user-level documentation for all this cool stuff?
> 
> 
> Ehm... guess what...
> 
> No, wait: I wrote some lines in asoundrc.txt:
> 
>   type meter            # Meter PCM
>   slave STR             # Slave name (see pcm_slave)
>   # or
>   slave {               # Slave definition or name
>     pcm STR             # Slave PCM name
>     # or
>     pcm { }             # Slave PCM definition
>   }
>   [frequency INT]       # Updates per second
>   scopes {              # Scopes
>     ID STR              # Scope name (see pcm_scope)
>   # or
>     ID { }              # Scope definition (see pcm_scope)
>   }
> 
> # PCM scope type definition
> pcm_scope_type.NAME {
>   [lib STR]             # Library file (default libasound.so)
>   [open STR]            # Open function (default
> _snd_pcm_scope_NAME_open)
> }
> 
> # PCM scope definition
> pcm_scope.NAME {
>   type STR              # Scope type
>   ...
> }
> 
> The rest is obvious, of course ;-)))
> 

Excellent!

Well, you wrote  that there is a sample implementation of this pcm_meter ,
but I can't find it (searched in alsa tools / utils , and searched  with 
google with no good result)

Anyway, i'm going on trying to use it

Thanks

Laurent




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