From mboxrd@z Thu Jan  1 00:00:00 1970
From: Abramo Bagnara <abramo.bagnara@libero.it>
Subject: Re: help for a levelmeter
Date: Thu, 17 Oct 2002 22:48:54 +0200
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To: Jack O'Quin <joq@io.com>
Cc: Laurent Georget <lgeorget2@club-internet.fr>, karsten wiese <annabellesgarden@yahoo.de>, Devel Alsa <alsa-devel@lists.sourceforge.net>
List-Id: alsa-devel@alsa-project.org

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 ;-)))

-- 
Abramo Bagnara                       mailto:abramo.bagnara@libero.it

Opera Unica                          Phone: +39.546.656023
Via Emilia Interna, 140
48014 Castel Bolognese (RA) - Italy


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