Re: [Linuxsampler-devel] LSCP Protocols - Some confusion about mixing vs. channels

[Mark K. <mar...@gm...>]

On Sat, 12 Feb 2005 02:06:30 +0100, Christian Schoenebeck
<sch...@so...> wrote:
> Es geschah am Mittwoch 09 Februar 2005 03:44 als Mark Knecht schrieb:
> > SET CHANNEL AUDIO_OUTPUT_CHANNEL 0 0 0
> > OK
> > SET CHANNEL AUDIO_OUTPUT_CHANNEL 0 1 1
> > ERR:0:There is no audio output device with index 1
> 
> I hope that issue is now fixed with latest CVS. Please try out. Take the last
> example on http://www.linuxsampler.org/documentation.html as a starting point
> for your script.
> 
> CU
> Christian
> 

Hi Christian,
   Thanks for working on this. It will take me quite awhile to really
check this out. Here's my status after the first hour:

1) I rebuilt the whole package from scratch. (LS, libgig and liblscp)
All 3 compiled and installed correctly.

2) I've loaded a few of my single gig scripts. (Piano, Scarbee) They
are working fine. Note that they all use MIDI channel 1 and go to the
first two alsa_pcm:playback_1/2 pair.

3) Next I loaded my existing LS-Orchestra-script, or what there is of
it. It creates 32 outputs, loads 7 gigs and does the audio hook-up to
a set of PCM outputs starting at playback_17. According to QJC all the
outputs are there and seem to be hooked up.

   Now this is where it starts getting a little more difficult. The
current mapping is supposed to look like this:

violins, violas and cellos: playback_17/18, MIDI 1-3
trumpets, trombones, tuba & flute: playback_19/20, MIDI 4-7
piccalo: playback_21/22, MIDI 8

When I hook up VKEYBD which generates MIDI channel 1 I do seem to get
the violin audio but I'm getting it on playback_21/22.

   This could certainly be due to some problem in my script that I
haven't understood yet. I'll keep looking. I have not yet tried with
other MIDI channels but I thought I'd send this feedback early so you
could see if there is some simple problem that's causing this. I am
setting up an orchestra MIDI file that I have to drive this and will
let you know more later.

   Looks like a good start. I expect whether the problem is in LS or
my scripts it will be discovered very soon.

Thanks much,
Mark