[Melys-devel] Using external MIDI port

[R. S. R. <sra...@nc...>]

On Wed, 29 Mar 2000 20:44:17 +0100, Steve Ratcliffe wrote:

>> 2) MIDI event capture. Is this already implemented?
>
>It should just work once you have set ALSA_INPUT_PORTS.  (You also need
>to ensure that the snd-seq-midi module is loaded) All MIDI events are
>captured/recorded, even ones that you can't yet edit such as pitch-bend,
>controllers and sysex.

I was able to make half of it work. I connected a
Yamaha PSR-270 keyboard to the Sound Blaster Live!,
did a "modprobe snd-seq-midi", and then set both
ALSA_INPUT_PORTS=64:0 and ALSA_OUTPUT_PORTS=64:0.
Using both pmidi and melys I can send MIDI data
to the keyboard without problems. 

However, I can't seem to get MIDI-in to work. It
may be user error. Here's what happens everytime:

1. load melys
2. On track one click the record button
3. melys segfaults

Am I doing something wrong? Is there a way to test the
port using another program so I can determine if melys
or ALSA is to blame? Also, once melys segfaults, port
64:0 becomes unusable for reading *or* writing until I
reboot the computer. I am unable to simply restart the
ALSA driver - it insists that it is in use.

All the other ALSA driver features for the Sound Blaster
Live! card seem to work. I can play .wav files, use the
internal synth, play MIDI files internally, download and
use soundfont files, and use external MIDI output. Only
the external MIDI input seems to be a problem.

I'm using the Sound Blaster Live! value card, Red Hat
6.1 with the stock 2.2.12 kernel, and ALSA 0.5.6.

FWIW, here's my conf.modules setup:

 # Alsa stuff
 alias char-major-116 snd
 options snd snd_major=116 snd_cards_limit=1 snd_device_mode=0666 snd_device_gid=0 snd_device_uid=0
 alias snd-card-0 snd-card-emu10k1
 options snd-card-emu10k1 snd_index=0
 # OSS compatibility stuff
 alias char-major-14 soundcore
 alias sound-slot-0 snd-card-0
 alias sound-service-0-0 snd-mixer-oss
 alias sound-service-0-1 snd-seq-oss
 alias sound-service-0-3 snd-pcm-oss
 alias sound-service-0-8 snd-seq-oss
 alias sound-service-0-12 snd-pcm-oss

And the sequencer port info (prior to the segfault):

 Client info
   cur  clients : 5
   peak clients : 10
   max  clients : 192

 Client   0 : "System" [Kernel]
   Port   0 : "Timer" (system:Rwe:Rwe-)
   Port   1 : "Announce" (system:R-e:R-e-)
     Connecting To: 63:0
 Client  63 : "OSS sequencer" [Kernel]
   Port   0 : "Receiver" (system:-we:-we-)
     Connected From: 0:1
 Client  64 : "External MIDI 0" [Kernel]
   Port   0 : "MIDI 0-0" (device:RWe:RWeX)
 Client  65 : "Emu10k1 WaveTable" [Kernel]
   Port   0 : "Emu10k1 Port 0" (device:-We:-We-)
     Connected From: 128:0[t:0]
   Port   1 : "Emu10k1 Port 1" (device:-We:-We-)
     Connected From: 128:0[t:0]
   Port   2 : "Emu10k1 Port 2" (device:-We:-We-)
     Connected From: 128:0[t:0]
   Port   3 : "Emu10k1 Port 3" (device:-We:-We-)
     Connected From: 128:0[t:0]
 Client 128 : "Melys sequencer" [User]
   Port   0 : "port-0" (application:rWe:rWe-)
     Connecting To: 65:0[t:0], 65:1[t:0], 65:2[t:0], 65:3[t:0]
   Output pool :
     Pool size          : 200
     Available cells    : 199
     Cells in use       : 1
     Peak cells in use  : 1
     Alloc success      : 1
     Alloc failures     : 0
     Alloc no-pool      : 0
   Input pool :
     Pool size          : 200
     Available cells    : 200
     Cells in use       : 0
     Peak cells in use  : 0
     Alloc success      : 0
     Alloc failures     : 0
     Alloc no-pool      : 0 



-Steve

_____________________________________________________________________
R. Steven Rainwater * http://www.ncc.com/humans/srainwater/index.html
"As you struggle to save humanity be sure to avoid electrodes in
your path"  -- Robotron 2084