"Unknown object type" when loading my modified plugin?

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1

I’m modifying the x42 convolver plugin to work as a piano resonance plugin, by adding MIDI input so it can respond to sustain pedal, only applying the effect when the pedal is down.

I used the same TTL for MIDI input that JUCE used for my JUCE-based plugin (which works but sadly isn’t efficient enough.)

Using printf debugs, I can see that MIDI input ins’t being received, and I suspect it’s due to the 'Unknown object type" error below. Also, while LV2 connect_port is called (actually, it’s called continuously which seems wrong) it’s never called with index zero, which is the MIDI port. Otherwise, everything works.

DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > ZConvolv: loading '/zynthian/zynthian-my-data/files/IRs/PianoRes.flac'
WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 24350.0us
WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 24350.0us
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > SF rate: 48000, n_chan: 2 frames: 96120
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > Convolver::reconfigure Nin=2 Nout=2 Nimp=2 Nchn=2
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > Convolver map: IR-chn 1: in 1 -> out 1 (gain: 0.0dB delay; 0)
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > Convolver map: IR-chn 2: in 2 -> out 2 (gain: 0.0dB delay; 0)
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > prio =    0, offs =      0,  parsize =    64,  npar =   3
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > prio =   -1, offs =    192,  parsize =   128,  npar =   6
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > prio =   -3, offs =    960,  parsize =   512,  npar =   6
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > prio =   -5, offs =   4032,  parsize =  2048,  npar =   6
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > prio =   -7, offs =  16320,  parsize =  8192,  npar =  10
DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG x42_-_IR_Convolver_Stereo-01 > error: Unknown object type
WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 3, delay: 32.0us
WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 4, delay: 85.0us
DEBUG:zynthian_state_manager.update_thread: ************ CHECKING FOR UPDATES ... ************

You can see my code at https://github.com/jlearman/zconvo.lv2 . (I plan to change the name after it all works.)

Here’s the TTL for the MIDI input:

                a lv2:InputPort , atom:AtomPort ;
                rsz:minimumSize 8912 ;
                atom:bufferType atom:Sequence ;
                atom:supports
                        midi:MidiEvent ,
                        patch:Message ,
                        time:Position ;
                lv2:designation lv2:control ;
                lv2:index 7 ;
                lv2:symbol "midi_in" ;
                lv2:name "MIDI Input"
2

Never mind. Cockpit error (as usual) and the error message is unrelated (and happens with the stock X42 IR Convolver.) I think it’s related to handling the IR file parameter, but that’s working regardless.

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