I will try to have a look at adding the feature to our host next week. jalv should still build, although maybe it needs a couple of paths changed. The downside with jalv is that it is a single-plugin host.
LV2/LADSPA Plugins
giuliomoro i see. thanks for the heads up! the modduo version is multi plugin as well, ir they load several instances...
4 days later
- Edited
ok i have a go at compiling jalv on current bela. i could try then the plugin and see if it does even run on BELA. if not, no need to work on the new LV2host...
as you said some libraries are missing but i think i fixed the paths. (i had to manually include Midi_c.h in the src directory, because it was not found otherwise.) i now get this error on ./waf build:
[ 1/11] Compiling src/bela.c
../src/bela.c:41:1: error: unknown type name 'Midi'
Midi* midi;
^~~~
../src/bela.c: In function 'render':
../src/bela.c:110:31: warning: implicit declaration of function 'Midi_availableMessages' [-Wimplicit-function-declaration]
if((availableMidiMessages = Midi_availableMessages(midi)) > 0)
^~~~~~~~~~~~~~~~~~~~~~
../src/bela.c:136:27: warning: implicit declaration of function 'Midi_getMessage' [-Wimplicit-function-declaration]
unsigned char size = Midi_getMessage(midi, buf);
^~~~~~~~~~~~~~~
../src/bela.c: In function 'setup':
../src/bela.c:227:10: warning: implicit declaration of function 'Midi_new' [-Wimplicit-function-declaration]
midi = Midi_new(gMidiPort0);
^~~~~~~~
../src/bela.c:227:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
midi = Midi_new(gMidiPort0);
^
../src/bela.c: In function 'cleanup':
../src/bela.c:260:3: warning: implicit declaration of function 'Midi_delete' [-Wimplicit-function-declaration]
Midi_delete(midi);
^~~~~~~~~~~lokki that's a weird failure, as if Midi_c.h was empty. Is the #include still in place in src/bela.c ?
giuliomoro i think so. playing a concert now, will check later. can i include a Midi_c.h from within the BELA image? i couldn't find it and included one from the bela doc wiki (found via google)
ok, got it too compile... as you said, it was commented, stupid me.
when i run the plugin i get:
root@bela:~/Bela/projects/jalv-Bela/build# ./jalv http://gareus.org/oss/lv2/fat1
Plugin: http://gareus.org/oss/lv2/fat1
UI: None
Plugin requires 1 inputs and 1 outputs
Sample rate: 44100 Hz
Block length: 64 frames
MIDI buffers: 4096 bytes
Comm buffers: 65536 bytes
Update rate: 25.0 Hz
Illegal instructionand it aborts. not sure if the binary i installed is the reason for this. will try to compile the fat1.lv2 from source to see if it makes a difference
lokki not sure if the binary i installed is the reason for this. will try to compile the fat1.lv2 from source to see if it makes a difference
SIGILL (ILLEGAL INSTRUCTION) could happen if the binary was built for a different architecture, e.g.: an armv8 32bit binary will load but may fail on an instruction not present in armv7 (e.g.: NEON divide). If the binary is for armv7 then you could get a SIGILL because of some weird pointer error where you are trying to execute a portion of memory that does not contain executable data. I thought you had tried to compile the plugin yourself earlier? Where is the release from? Cannot see it on their github. You can try and run jalv inside gdb ( you'd do gdb jalv and then once you are in dorun < command line options> then when it fails you can see where (what function or even what line perhaps) it failed. You can also do disass to see the assembly and individuate the culprit instruction.
giuliomoro got one step further. when i build the plugin without any optimisations, it runs. i get a ton of underruns, so i will now add in optimisations too see when it starts to fail :-)
do you see a problematic one?:
OPTIMIZATIONS="-Wall -Wno-unused-function -O3 -ffast-math -fomit-frame-pointer -fno-finite-math-only -fvisibility=hidden -fdata-sections -ffunction-sections -DNDEBUG -mfpu=neon-vfpv4 -mfloat-abi=hard -mvectorize-with-neon-quad"-mfpu=neon-vfpv4 should be -mfpu=neon
- Edited
ok, with just -O3 -DNDEBUG it runs (i think)
i get:
root@bela:~/Bela/projects/jalv-Bela/build# ./jalv http://gareus.org/oss/lv2/fat1
Plugin: http://gareus.org/oss/lv2/fat1
UI: None
Plugin requires 1 inputs and 1 outputs
Sample rate: 44100 Hz
Block length: 64 frames
MIDI buffers: 4096 bytes
Comm buffers: 65536 bytes
Update rate: 25.0 Hz
Plugin requires 1 inputs and 1 outputs
mode = 0.000000
channelf = 0.000000
tuning = 440.000000
bias = 0.500000
filter = 0.100000
corr = 1.000000
offset = 0.000000
bendrange = 2.000000
fastmode = 0.000000
m00 = 1.000000
m01 = 1.000000
m02 = 1.000000
m03 = 1.000000
m04 = 1.000000
m05 = 1.000000
m06 = 1.000000
m07 = 1.000000
m08 = 1.000000
m09 = 1.000000
m10 = 1.000000
m11 = 1.000000
nmask = 0.000000
nset = 0.000000
bend = 0.000000
error = 0.000000
latency = 0.000000i can change the settings via the prompt. :-)
and i can hear my voice!! yes.
- Edited
lokki the > at the end is not visible in the code section somehow, i take it this is some kind of prompt for the plugin
yeah, never understood what you can do with it, but it's there at the bottom of jalv the whole time. What's the CPU like? Note that if there is a "worker thread", that will not show up at /proc/xenomai/sched/stat (because it wouldn't be a Xenomai task, as it is managed by jalv or the plugin itself), and you will have to do
top -p `pidof jalv` -Hto see the CPU usage of all the Linux threads (this will be percentage where the total available is 100 minus the sum of what is returned by /proc/xenomai/sched/stat.
the ">" is to change the settings. if i type m10 = 0 for example it changes that parameter in the plugin. so it is a primitive UI :-)
CPU:
top:
top - 23:39:20 up 49 min, 2 users, load average: 0.52, 0.66, 0.64
Threads: 4 total, 0 running, 4 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.3 sy, 0.0 ni, 99.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 501464 total, 233488 free, 79792 used, 188184 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 374764 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6088 root 20 0 22532 19412 7336 S 0.3 3.9 0:00.05 jalv
6090 root -51 0 22532 19412 7336 S 0.3 3.9 0:00.14 bela-midiIn_hw:
6085 root 20 0 22532 19412 7336 S 0.0 3.9 0:00.38 jalv
6094 root -96 0 22532 19412 7336 S 0.0 3.9 0:00.00 bela-audio xenomai stat:
Every 0.5s: cat /proc/xenomai/sched/stat bela: Tue Dec 17 23:40:32 2019
CPU PID MSW CSW XSC PF STAT %CPU NAME
0 0 0 658918 0 0 00018000 77.6 [ROOT]
0 6085 3 4 13 0 000600c0 0.0 jalv
0 6090 2 3 4 0 000480c0 0.0 bela-midiIn_hw:0,0,0
0 6094 1 137640 137642 0 00048046 22.1 bela-audio
0 0 0 315535 0 0 00000000 0.0 [IRQ16: [timer]]
0 0 0 137647 0 0 00000000 0.2 [IRQ180: rtdm_pruss_irq_irq]oh. so there is no worker thread, or it's doing very little (it would be the 0.3% CPU one) ...
great!
lokki primitive UI :-)
primitive? It's text-based, so it's very evolved, to the point where all the pointless frills have been removed.
giuliomoro -mfpu=neon-vfpv4 should be -mfpu=neon
yep, that was it. it runs with all optimisations now...
Great. vfpv4 is for armv8. armv7 has the vfpv3.
with all the optimisations in place it looks even better:
Every 0.5s: cat /proc/xenomai/sched/stat bela: Tue Dec 17 23:53:27 2019
CPU PID MSW CSW XSC PF STAT %CPU NAME
0 0 0 1061315 0 0 00018000 85.3 [ROOT]
0 8067 3 4 13 0 000600c0 0.0 jalv
0 8073 2 3 4 0 000480c0 0.0 bela-midiIn_hw:0,0,0
0 8077 1 88810 88813 0 00048046 14.4 bela-audio
0 0 0 405345 0 0 00000000 0.0 [IRQ16: [timer]]
0 0 0 88819 0 0 00000000 0.2 [IRQ180: rtdm_pruss_irq_irq]great!
is there a way to change the PGA gain settings from the command line when running jalv?
giuliomoro primitive? It's text-based, so it's very evolved
of course.