Underrun detected: 1 blocks dropped

giuliomoro Thanks! I have been doing this, and in the console, it does report that things are being unzipped, but then the previously working MIDI instruments are not working now. WAIT! I think I have it...

In the past, (probably because it was using other MIDI drivers?), in the command-line, it was recommended that one set the following defaults:

-Mhw:1,0,0 -+rtmidi=NULL --daemon -dm0

it turns out that you do NOT want to set -+rtmidi=NULL any longer

Once that is removed, all my previously running MIDI instruments are working AND...

I am very happy to report that you are now supporting the connecting of multiple MIDI devices
- I have a USB hub plugged into the Bela MINI
- I have a Novation LaunchPad mini Mk3 PLUS a Korg NanoKontrol plugged into the hub
- I am running my MIDI .csd with the following command-line arguments

-Mhw:1,0,0 -Ma --daemon -dm0

And both controllers are playing and controlling the instrument! (WONDERFUL)

• You might need to make changes to the Csound examples, as I suggested to you previously
  using this as a default header for the .csd files

sr = 44100
ksmps = 16
nchnls = 2
0dbfs = 1

and for MIDI instruments:

-Mhw:1,0,0 -Ma --daemon -dm0

Now to get to the bottom of why the audio input is not working on previous .csd files.
- any suggestions about what might have changed, or what might now be required.

When I comment out the RtMIDI=NULL from the 4-MIDI example, it runs, but...

there are a lot of little clicks now (possibly data-lates as Barry Vercoe used to call them?)

and the console does report a lot of dropouts and mode switches (which might explain the clicks)

Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped
rtevent: T 12.251 TT 12.251 M: 0.06069 0.08127
rtevent: T 12.263 TT 12.263 M: 0.04022 0.04759
Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped
35608 mode switches detected on the audio thread.
Underrun detected: 1 blocks dropped
38370 mode switches detected on the audio thread.
41137 mode switches detected on the audio thread.
backtrace() returned 0 addresses
Csound tidy up: Terminated
Makefile:595: recipe for target 'runide' failed
make: *** [runide] Terminated
inactive allocs returned to freespace
end of score. overall amps: 0.15828 0.15978
overall samples out of range: 0 0
0 errors in performance
Elapsed time at end of performance: real: 16.050s, CPU: 7.453s
Bela stopped
root@bela ~/Bela#

I am using the following sample rate and krate settings

sr = 44100
ksmps = 8. or ksmps = 16
nchnls = 2
0dbfs = 1

giuliomoroRunning multiple MIDI devices is not a top priority, but it would be nice to connect a hub to the bela and just use any of the controllers that one has connected.

The strange thing now, is that realtime audio in does not work with the latest bela2 (it could be connected perhaps?)
- and so, this might not be portMIDI related.

in the examples, the audio loopback still works, but none of my 50+ audio examples work any longer
- and the console does not report any issues.

As a test example, you could just use the previous example with the 'ins' opcode
- this works on the laptop and this worked previously

I tried forcing the comandline with a -iadc and -odac and --realtime and --daemon, but this made no difference.

<CsoundSynthesizer>
<CsOptions>
</CsOptions>
<CsInstruments>

sr       = 44100
ksmps    = 16
nchnls   = 2
0dbfs    = 1

instr    1 ; Stereo delay with normal and cross-feedback

ilevl    = p4      ; Output level
idelay1  = p5/1000 ; L delay in ms
idelay2  = p6/1000 ; R delay in ms
ifdbk1   = p7      ; L feedback
ifdbk2   = p8      ; R feedback
ifdbkx   = p9      ; X Feedback
ifreq1   = p10     ; L cutoff
ifreq2   = p11     ; R cutoff
imix     = p12     ; Mix: 0=Dry 1=Delay
afdbk1   init 0
afdbk2   init 0

ainL, ainR ins
ain = ainL+ainR

;ain      soundin  "sp_hellorcb.aif"   ; Does NOT work on Bela
;ain     diskin "sp_hellorcb.aif", 1    ; WORKS on Bela

ain1     = ain + afdbk1*ifdbk1 + afdbk2*ifdbkx
ain2     = ain + afdbk2*ifdbk2 + afdbk1*ifdbkx
adelay1  delay  ain1, idelay1
adelay2  delay  ain2, idelay2
adelay1  butterlp  adelay1, ifreq1
adelay2  butterlp  adelay2, ifreq2
afdbk1   = adelay1
afdbk2   = adelay2
aout1    = adelay1*imix + ain*(1 - imix)
aout2    = adelay2*imix + ain*(1 - imix)
outs1    aout1*ilevl
outs2    aout2*ilevl

endin

</CsInstruments>
<CsScore>
;Delay in ms, Filt in Hz. Total feedback should be <1?

;   Strt  Leng   Levl  DelyL DelyR FeedL FeedR XFeed FiltL FiltR Mix
i1  0.00  10.00  1.00  500   400   0.40  0.40  0.40  2500  2500  0.50
e
</CsScore>
</CsoundSynthesizer>

giuliomoro I will try the latest version, and solder up my Trill Crafts for those tests too!

Here is a working MIDI .csd, in the CsOptions section, you will see command lines for:
previous Bela 6.15 (with no multiple MIDI support, but excellent MIDI)
Bela 6.15 v2 (with multiple MIDI support, working!... but many Mode switches and Dropped blocks)
the command line settings I use on the Mac, to run Csound with multiple MIDI devices in the terminal

As you will see from the .csd below, it is reading MIDI CCs 1-9 (typically from my nanoControl)

<CsoundSynthesizer>
<CsOptions>
;-Mhw:1,0,0 -+rtmidi=NULL --daemon -dm0 ; Bela 6.15 v1
;-Mhw:1,0,0 --daemon -dm0 ; Bela 6.15 v2
-Mhw:1,0,0 -Ma --daemon -dm0 ; Bela 6.15 v2 (multiple MIDI devices)
;csound -+rtaudio=pa_cb -iadc1 -odac1 -+rtmidi=portmidi -Ma --env:CSNOSTOP=yes ; Mac commandline
</CsOptions>
<CsInstruments>

sr		= 44100
ksmps	= 16
nchnls	= 2
0dbfs	= 1

gaRvb	init 0

ctrlinit	1,   1,100, 2,0, 3,0, 4,64, 5,1, 6,10, 7,100, 8,10, 9,76

		instr	1
icps	cpsmidi
iamp	ampmidi .5

kamp	midic7 1, 0,1
kamp	port 	kamp,.1	
kcar	midic7 2, 1,4
kcar	port 	kcar,.01
kmod	midic7 3, 1,10
kmod	port 	kmod,.01
kindx	midic7 4, 1,13
kindx	port	kindx,.01
iatk	midic7 5, .001,1
idec	midic7 6, .01,1
isus	midic7 7, 0,1
irel	midic7 8, .01,2
kWet	midic7 9, 0,1

asig	foscil	kamp*iamp, icps, kcar, 1+(kmod), kindx, 1
kmgate	mxadsr	iatk, idec, isus, irel

aDry	=	asig * kmgate

		vincr 	gaRvb, aDry * kWet

		outs		aDry, aDry
		endin

		instr 99
		denorm	gaRvb
awetL,awetR freeverb gaRvb, gaRvb, .9, .5
		outs awetL, awetR
		clear gaRvb
		endin

</CsInstruments>

<CsScore>
f1	0	16384	10	1
i 1  0 z
i 99 0 z
</CsScore>

</CsoundSynthesizer>

giuliomoro to test and see/hear if realtime audio in is working again, you would use the version of the stereo-delay instrument that includes the two uncommented lines (and plug in your iPhone or a Microphone):

ainL, ainR ins
ain = ainL+ainR

to test if the soundin opcode is working, you need to add your own mono sample to the project and uncomment
the ain line with the soundin opcode.

;ain soundin "sp_hellorcb.aif" ; Does NOT work on Bela.

• you should replace "sp_hellorcb.aif" with the name of your uploaded mono sample.
  It can be either a wave or aiff - for instance

ain soundin "sp_hellogiulio.wav"

and if instead, you were to uncomment the line using diskin opcode, you will hear/see that it does work

ain diskin "sp_hellorcb.aif", 1 ; WORKS on Bela

I will try your latest build now.

Best,

-dB

giuliomoro 6.15-bela3 release - initial test

1. not sure it was installed correctly? sorry
2. as I noted previously, in 6.15-bela2, realtime audio-in does not work so...
   2a. I rolled back to 6.15-bela1, and... realtime audio-in WORKS (yes!) - in this version, and also...
   2b. To my surprise, multiple MIDI inputs WORK with this older version (?)

with the following command line in the csOptions:

-Mhw:1,0,0 -Ma --daemon ; -dm0

The console still reports a lot of dropouts and a lot of ModeSwitch changes, but not as many as in 6.15 v2

=====

Building project ...
Build finished
Running project ...
0"058.644| WARNING: [main] duplicate call from main program to xenomai_init() ignored
0"058.939| WARNING: [main] (xeno-config --no-auto-init disables implicit call)
0dBFS level = 32768.0
--Csound version 6.15 (float samples) Oct 15 2020
[commit: c329d91b2527e96f05ecb47837e2bfd3b68f5be7]
libsndfile-1.0.27
Device type: Bar (1)
Address: 0x20
Firmware version: 2
Device type: Square (2)
Address: 0x28
Firmware version: 2
Device type: Ring (4)
Address: 0x38
Firmware version: 2
Device type: Hex (5)
Address: 0x40
Firmware version: 2
realtime mode enabled
WARNING: [mcould not open library '/usr/lib/csound/plugins-6.0/libfluidOpcodes.so' (libfluidsynth.so.1: cannot open shared object file: No such file or directory)
WARNING: could not open library '/usr/lib/csound/plugins-6.0/libosc.so' (liblo.so.7: cannot open shared object file: No such file or directory)[m
[mUnifiedCSD: /root/Bela/projects/Oct25/MIDI-FMcc1-8.csd
STARTING FILE
Creating options
Creating orchestra
closing tag
Creating score
realtime mode enabled
rtmidi: ALSA Raw MIDI module enabled
sorting score ...
... done
setting dummy interface
midi channel 1 using instr 1
midi channel 2 using instr 1

midi channel 63 using instr 1
midi channel 64 using instr 1
displays suppressed
0dBFS level = 1.0
ALSA midi: Using all devices.
ALSA: opened MIDI input device 'hw:0,0'
ALSA: opened MIDI input device 'hw:1,0'
ALSA: opened MIDI input device 'hw:2,0'
orch now loaded
audio buffered in 256 sample-frame blocks
SECTION 1:
Initialising spinlock...
Starting realtime mode queue: 0xb5027010 thread: 0xdabb78
Underrun detected: 39 blocks dropped
Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped
2135 mode switches detected on the audio thread.
Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped
Und

Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped
Underrun detected: 1 blocks dropped
10695 mode switches detected on the audio thread.
Underrun detected: 1 blocks dropped

Underrun detected: 1 blocks dropped
backtrace() returned 0 addresses
Csound tidy up: Terminated
Makefile:595: recipe for target 'runide' failed
make: *** [runide] Terminated
Underrun detected: 1 blocks dropped
15004 mode switches detected on the audio thread.
inactive allocs returned to freespace
end of score. overall amps: 0.41622 0.35189
overall samples out of range: 0 0
0 errors in performance
Bela stopped
root@bela ~/Bela#

giuliomoro the comment in the code is by Victor Lazzarini - it would be great if you contacted him about this (on the Bela at least) bug. It does confirm that the console is reporting this fact (feature? bug?) when the .csd is loaded and it reports that diskin2 has loaded the sample "sp_hellorcb.aif" - when the soundin opcode is used in the .csd file - but, then... there is silence, no sound, as if the file is loaded and there is no 'error' but the rest of the instrument can't find it. curious. I am sure Victor will have a suggestion and an explanation.