On Sun, 2006-04-16 at 20:16 +0200, Julien Claassen wrote: > Hi all! > Just recently this started. When ever I connect fluidsynth (1.0.6 or 1.0.7) > to my soundcard it says once something like: > WARNING: alsamidi sequencer buffer overflow! > When I switch on my synth, which has active sensing), this message repeats > over and over again. The sound works fine, but I can't read what's on the > screen and that annoys me and makes things dificult. > My system: > Kernel 2.6.16.2 (alsa 1.0.11rc3?) > With kernel 2.6.11.8 it ran perfectly well. But now my soundcard's switched > from port 64 to port 16. > Can anyone help me? Anyone with the same problem and a fix? Suspicions? > Kindest regards > Julien > > -------- > Music was my first love and it will be my last (John Miles) > > ======== FIND MY WEB-PROJECT AT: ======== > http://ltsb.sourceforge.net - the Linux TextBased Studio guide >
Hi Julien! :)
I added that when trying to make the ALSA sequencer more robust, guess
it doesn't work quite right though. Here is a patch against 1.0.7a.
Let me know if you have any problems with it. It should be applied from
the top level FluidSynth source directory like so:
patch -p0 <fluid_alsa.patch
Sorry for the annoyance ;) Cheers!
Josh Green
--- src/fluid_alsa.c.orig 2006-04-17 13:04:22.000000000 -0700
+++ src/fluid_alsa.c 2006-04-17 13:03:48.000000000 -0700
@@ -390,6 +390,7 @@
|| (state == SND_PCM_STATE_PAUSED)) {
snd_pcm_drop(dev->pcm);
}
+ snd_pcm_close (dev->pcm);
}
FLUID_FREE(dev);
@@ -901,8 +902,8 @@
id = id_pid;
}
- /* open the sequencer INPUT only, non-blocking */
- err = snd_seq_open(&dev->seq_handle, device, SND_SEQ_OPEN_INPUT, SND_SEQ_NONBLOCK);
+ /* open the sequencer INPUT only */
+ err = snd_seq_open(&dev->seq_handle, device, SND_SEQ_OPEN_INPUT, 0);
if (err < 0) {
FLUID_LOG(FLUID_ERR, "Error opening ALSA sequencer");
goto error_recovery;
@@ -1134,17 +1135,12 @@
}
}
- if (n < 0) /* Negative value indicates an error */
+ /* Negative value indicates an error, ignore interrupted system call
+ (-EPERM) and input event buffer overrun (-ENOSPC) */
+ if (n < 0 && n != -EPERM && n != -ENOSPC)
{
- if (n == -EPERM) /* interrupted system call? */
- ;
- else if (n != -ENOSPC) /* input event buffer overrun? */
- FLUID_LOG(FLUID_WARN, "ALSA sequencer buffer overrun, lost events");
- else
- {
FLUID_LOG(FLUID_ERR, "Error occured while reading ALSA sequencer events (code=%d)", n);
dev->status = FLUID_MIDI_DONE;
- }
}
}
pthread_exit(NULL);
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