Laurent Georget wrote: > > karsten wiese wrote: > > Laurent Georget: > > > >> Hello, > >> > >>I 'd like to make a levelmeter program which would > >>display sound card > >>input/output > >>while the audio device is opened by another program. > >>I tried to use copy > >>plugin , but now (since 0.9.0rc3 ) the > >>"snd_pcm_copy_open" give a "implicit > >>declaration of function" > > > > hmm, it is still declared in > > alsa-lib/include/pcm_plugin.h ...? > > > > Hmm.. my fault, just have to include pcm_plugin.h > > > > > > > (there is a jack meter client @ > > http://plugin.org.uk/meterbridge/) > > > > > > regards, karsten > > Thanks for responding! > > Ok , I have seen it , but it works with jack compatible programs, and > the levelmeter > i'm aiming at should work with Glame , as an example . > > Anyway I can now try to experiment the copy_plugin : would you know some > program using > this plugin, which would make the thing easier ! >
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. -- Abramo Bagnara mailto:[EMAIL PROTECTED] Opera Unica Phone: +39.546.656023 Via Emilia Interna, 140 48014 Castel Bolognese (RA) - Italy ------------------------------------------------------- This sf.net email is sponsored by: viaVerio will pay you up to $1,000 for every account that you consolidate with us. http://ad.doubleclick.net/clk;4749864;7604308;v? http://www.viaverio.com/consolidator/osdn.cfm _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
