rawmidi problems

rawmidi problems

[Pedro Lopez-Cabanillas]

Hi,

I was trying to test rawmidi on snd-usb-midi with latest patches, with no  
success :(

Then, as I have an sb 128 (snd-ens1371) I tryed the alsa-lib/test/rawmidi 
program with only that card module loaded. 

$ ./rawmidi -i hw:0,0
Read midi in
Press ctrl-c to stop
(With a MIDI keyboard connected, no events received at all.)

$ ./rawmidi -i hw:0,0 -o hw:0,0 -t
(OK, input events sent to out, with a lot of delay)

$ ./rawmidi -o hw:0,0
Writing note on / note off
(OK)

With alsa-lib/test/seq program all tests OK.

Regards,
Pedro




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Re: rawmidi problems

[Maarten de Boer]

add the flag -v to get verbose output and see what events you receive (this should be default behaviour i guess...)


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Re: rawmidi problems

[Takashi Iwai]

At Fri, 5 Jul 2002 17:53:54 +0200,
Pedro Lopez-Cabanillas wrote:
> 
> Hi,
> 
> I was trying to test rawmidi on snd-usb-midi with latest patches, with no  
> success :(
> 
> Then, as I have an sb 128 (snd-ens1371) I tryed the alsa-lib/test/rawmidi 
> program with only that card module loaded. 

there might be still bugs on virmidi codes.
i remember that it didn't work quite well on some conditions...

will check later.


ciao,

Takashi


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Re: rawmidi problems

[Pedro Lopez-Cabanillas]

El Vie 05 Jul 2002 18:33, Maarten de Boer escribió:
> add the flag -v to get verbose output and see what events you receive (this
> should be default behaviour i guess...)

It works! (and also with snd-usb-midi)
And I agree with you, -v option should be the default :)

$ ./rawmidi  -i hw:0,0 -v
Using:
Input: device hw:0,0
Output: NONE
Read midi in
Press ctrl-c to stop
read fe
read fe
read fe
read fe
read fe
read fe
read fe
read fe
read fe
Closing

Thanks,
Pedro


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Re: rawmidi problems

[Pedro Lopez-Cabanillas]

El Vie 05 Jul 2002 18:37, Takashi Iwai escribió:
> > I was trying to test rawmidi on snd-usb-midi with latest patches, with no
> > success :(
> >
> > Then, as I have an sb 128 (snd-ens1371) I tryed the alsa-lib/test/rawmidi
> > program with only that card module loaded.
>
> there might be still bugs on virmidi codes.
> i remember that it didn't work quite well on some conditions...
>
> will check later.

It works, sorry. I forgave the -v flag on rawmidi program :) Thanks everybody.

Now I am trying to test the oss midi emulation. MIDI Output works, but no 
input at all. I'm trying:
$ cat /dev/midi00 | od -x
(nothing happens, nor with /dev/snd/midiC0D0)

$ ls -l /dev/midi*
lrwxrwxrwx    1 root     audio          10 dic  4  2001 /dev/midi -> 
/dev/midi0
crw-------    1 plc      audio     14,   2 dic  4  2001 /dev/midi0
crw-------    1 plc      audio     14,   2 ago 30  2001 /dev/midi00
crw-------    1 plc      audio     14,  18 ago 30  2001 /dev/midi01
crw-------    1 plc      audio     14,  34 ago 30  2001 /dev/midi02
crw-------    1 plc      audio     14,  50 ago 30  2001 /dev/midi03
crw-------    1 plc      audio     14,  66 abr 18 20:17 /dev/midi04

Another question: I have a snd-ens1371 and two snd-usb-midi: a Roland/Edirol 
UM-2 and a Midiman Midisport 2x2. These are my modules.conf settings:

alias char-major-116 snd
alias char-major-14 soundcore
options snd snd_major=116 snd_cards_limit=3
alias snd-card-0 snd-ens1371
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
# ------------- USB MIDI ------------
alias snd-card-1 snd-usb-midi
alias sound-slot-1 snd-card-1
alias sound-service-1-1 snd-seq-oss
alias sound-service-1-8 snd-seq-oss
alias snd-card-2 snd-usb-midi
alias sound-slot-2 snd-card-2
alias sound-service-2-1 snd-seq-oss
alias sound-service-2-8 snd-seq-oss

with /dev/midi00 ouput goes to ens-1371, /dev/midi01 goes to the first usb 
midi device, and /dev/midi02 goes to the second, but both usb devices have 2 
inputs ans 2 outputs. Can I get all my five midi ports work with oss midi 
emulation?

Thanks,
Pedro



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Re: rawmidi problems

[Takashi Iwai]

At Fri, 5 Jul 2002 19:30:42 +0200,
Pedro Lopez-Cabanillas wrote:
> 
> Another question: I have a snd-ens1371 and two snd-usb-midi: a Roland/Edirol 
> UM-2 and a Midiman Midisport 2x2. These are my modules.conf settings:
> 
> alias char-major-116 snd
> alias char-major-14 soundcore
> options snd snd_major=116 snd_cards_limit=3
> alias snd-card-0 snd-ens1371
> 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
> # ------------- USB MIDI ------------
> alias snd-card-1 snd-usb-midi
> alias sound-slot-1 snd-card-1
> alias sound-service-1-1 snd-seq-oss
> alias sound-service-1-8 snd-seq-oss
> alias snd-card-2 snd-usb-midi
> alias sound-slot-2 snd-card-2
> alias sound-service-2-1 snd-seq-oss
> alias sound-service-2-8 snd-seq-oss
> 
> with /dev/midi00 ouput goes to ens-1371, /dev/midi01 goes to the first usb 
> midi device, and /dev/midi02 goes to the second, but both usb devices have 2 
> inputs ans 2 outputs. Can I get all my five midi ports work with oss midi 
> emulation?

do you really need to use oss midi devices?
as long as you only reading/writing midi byte streams (i.e. no
ioctls), you can use simply alsa rawmidi devices, /dev/snd/midiCxDx,
instead of /dev/midiXX.


Takashi


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Re: rawmidi problems

[Pedro Lopez-Cabanillas]

El Lun 08 Jul 2002 12:40, Takashi Iwai escribió:
> At Fri, 5 Jul 2002 19:30:42 +0200,
> Pedro Lopez-Cabanillas wrote:
> > with /dev/midi00 ouput goes to ens-1371, /dev/midi01 goes to the first
> > usb midi device, and /dev/midi02 goes to the second, but both usb devices
> > have 2 inputs ans 2 outputs. Can I get all my five midi ports work with
> > oss midi emulation?
>
> do you really need to use oss midi devices?
> as long as you only reading/writing midi byte streams (i.e. no
> ioctls), you can use simply alsa rawmidi devices, /dev/snd/midiCxDx,
> instead of /dev/midiXX.

No, I agree with you. In fact, I don't need the raw midi devices at all, as 
the sequencer API can do all and more.

My question was if I made a mistake or I am forgiving something, or if it is a  
limitation on ALSA OSS emulation. Only trying to deeply test the new  
snd-usb-midi driver. And for the fun of doing the things in several different 
ways.

As an example, and only for fun, this is a bash script for cron (hourly, of 
course) that plays thru raw midi devices without any special program.

Best regards,
Pedro

#!/bin/bash
#
# London Tower Big Ben tune as a simple bash script
# Copyright (C) 2002  Pedro Lopez-Cabanillas
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
tune="C 4, E 4, D 4, g 2, C 4, D 4, E 4, C 2, \
      E 4, C 4, D 4, g 2, g 4, D 4, E 4, C 2,"

mididev="/dev/midi03"
tempo=80 				# quarters per minute

function playnote() {
	let "ms = 240000 / ($2 * $tempo)"
	echo -ne '\x90' >&3
	echo -ne "$1\144" >&3
	sleep $ms'e-3s'
	echo -ne '\x80' >&3
	echo -ne "$1\000" >&3
}

function playtune() {
	echo $1 | tr "cdefgabCDEFGAB" "<>@ACEGHJLMOQS" | \
		while read -rd, note length; do
			playnote $note $length
		done
}

function playhour() {
	h=`date +%l`
	while [ $h -gt 0 ]; do
	    playnote $'\x37' 2
	    let "h--"
	done
}

if [ -c $mididev -a -w $mididev ]; then
	exec 3>$mididev
	echo -ne '\xb0\x07\x7f' >&3	# volume = 127
	echo -ne '\xc0\x0e' >&3		# instrument = bells
	playtune "$tune"
	sleep 2
	playhour
	exec 3<&-
else
	echo "`basename $0` : invalid MIDI device ( $mididev )"
fi



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Re: rawmidi problems

[Takashi Iwai]

At Mon, 8 Jul 2002 17:41:46 +0200,
Pedro Lopez-Cabanillas wrote:
> 
> El Lun 08 Jul 2002 12:40, Takashi Iwai escribió:
> > At Fri, 5 Jul 2002 19:30:42 +0200,
> > Pedro Lopez-Cabanillas wrote:
> > > with /dev/midi00 ouput goes to ens-1371, /dev/midi01 goes to the first
> > > usb midi device, and /dev/midi02 goes to the second, but both usb devices
> > > have 2 inputs ans 2 outputs. Can I get all my five midi ports work with
> > > oss midi emulation?
> >
> > do you really need to use oss midi devices?
> > as long as you only reading/writing midi byte streams (i.e. no
> > ioctls), you can use simply alsa rawmidi devices, /dev/snd/midiCxDx,
> > instead of /dev/midiXX.
> 
> No, I agree with you. In fact, I don't need the raw midi devices at all, as 
> the sequencer API can do all and more.
> 
> My question was if I made a mistake or I am forgiving something, or if it is a  
> limitation on ALSA OSS emulation. Only trying to deeply test the new  
> snd-usb-midi driver. And for the fun of doing the things in several different 
> ways.
 
ok, point taken.

on OSS emulation, only up to two devices can be assigned per card.
one is assigned to /dev/midiXX and another to /dev/amidiXX.
which device is mapped can be changed via snd_midi_map and
snd_amidi_map options for snd-rawmidi module.
as default, they are specified as 0 and 1, respectively.


> As an example, and only for fun, this is a bash script for cron (hourly, of 
> course) that plays thru raw midi devices without any special program.
 
cool :)


ciao,

Takashi


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