FYI, regarding Timidity with recent jackd versions. Hope it may save some of
you some time along the way.
With Debian Sid (Unstable), I have
jackd and libjack0 version 0.116.1-2
custom kernel 2.6.25.9 with high resolution timer
Timidity CVS extracted 20090108
Hardware:
Intel 2.4GHz (old) CPU.
Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97
Creative Labs SB Live! 5/1
besides the fact that it didn't work until I tried changing jack_client_new()
to using jack_client_open() in timidity/jack_a.c as previously posted.
If someone with CVS write access wants to, please do update the Timidity code
base. But the Timidity project lead may want to do a point release of the
Timidity code first, so anyone who want or need to use the code for older jackd
can still use the code up to now. Since the new jackd verion breaks the old
jack_clien_new() API.
Anyway, my use of buffer parameters used to be -B2,8 as in:
timidity -iAD -B2,8 -Oj
results in slow, stretched-out, noisy sounds. So I tried using:
timidity -iAD -B2,12 -Oj
That sounded OK but there is a time lag in the play-back. The play-back time
lag improves slightly with:
timidity -iAD -B2,10 -Oj
But when I tried playing along with vkeybd, that didn't work very well for
real-time. Finally trying:
timidity -iAD -B1,10 -Oj
seems to work best for me with both midi playback and vkeybd usage concurrently.
Jimmy
--- On Thu, 1/15/09, jimmy <wg20...@yahoo.com> wrote:
> From: jimmy <wg20...@yahoo.com>
> Subject: re: Running Timidity as a service
> To: timidity-talk@lists.sourceforge.net
> Date: Thursday, January 15, 2009, 7:15 AM
> > Date: Tue, 13 Jan 2009 19:29:48 +0000
> > From: Jonathan Gazeley
> > <jonathan.gaze...@bristol.ac.uk>
> > Subject: [timidity-talk] Running Timidity as a service
>
> . . .
>
> > [jonat...@poseidon ~]$ sudo service timidity start
> > [jonat...@poseidon ~]$ file mcoputils.cc: line 499
> (static
> > std::string
> > Arts::MCOPUtils::mcopDirectory()): assertion failed:
> (home
> > != 0)
> > HOME environment variable not set?
> > jack_client_new: deprecated
> > Cannot connect to server socket err = No such file or
> > directory
> > Cannot connect to server socket
> > jack server is not running or cannot be started
> > no message buffer overruns
> > Couldn't open output device
> >
> >
> > I tested that I can successfully run timidity using
> sudo:
> >
> > [jonat...@poseidon ~]$ sudo timidity -iA
> > TiMidity starting in ALSA server mode
> > Opening sequencer port: 128:0 128:1 128:2 128:3
> >
> > Does anyone have any ideas what might be up?
> >
> > Cheers,
> > Jonathan
>
> I use Debian, not Fedora, so there might be some config
> differences.
>
> I don't know about the HOME environment thing right off
> the bat. If someone knows, please answer. Else, someone
> may have to look into Timidity source code to figure out.
>
> As for server socket error, and "jack server is not
> running or cannot be started", I think it is one and
> the same. The problem is the new "jackd" version,
> the message "jack_client_new: deprecated" points
> to the real cause.
>
> Timidity code still uses jack_client_new() as a mean to
> connect to jackd. However, with the new jackd, and libjack0
> both are at version 0.116.1-2 in Debian Sid (unstable), the
> call to jack_client_new() doesn't seem to work.
>
> I tried the following code in jack_a.c
>
> static int detect(void)
> {
> jack_client_t *client;
> jack_status_t status;
> /* ---OLD--- client =
> jack_client_new(TIMIDITY_JACK_CLIENT_NAME); */
> /* open a connection to the JACK server */
> client = jack_client_open (TIMIDITY_JACK_CLIENT_NAME,
> JackNullOption, &status);
> if (! client) {
> ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
> "jack_client_open() failed, status =
> 0x%2.0x\n", status);
> return 0;
> }
>
> jack_client_close(client);
> return 1; /* found */
> }
>
>
> and equivalent code in
>
> static int open_jack(void)
>
> function of the same file. It seems jackd deliberately
> breaks that old jack_client_new() API call. Otherwise, they
> could have easily use similar code as shown above to
> implement jack_client_new(), which is simple enough to keep
> old apps working without changes. Either that or they
> don't care for backward compatibility in this case, and
> force everyone to use new code.
>
> Jimmy
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