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when I try to read midi data using audioserver-jack, by calling jack_midi_event_get , I can't read, and the method returns -115.

First, thanks for a great library!

With 1.4.0 I am occasionally getting these messages in the console:

JNA: callback object has been garbage collected
JNA: callback object has been garbage collected
JNA: callback object has been garbage collected

Sometimes within maybe 10 seconds of, sometimes 10 minutes after startup, and sometimes it works fine for ages. I have also tried to enforce GC with System.gc() but that doesn't seem to trigger it.

The symptoms are that callbacks are no longer being called (none of them) and the message repeats apparently whenever there would have been a call to a callback..

I am running java version "1.8.0_144".

My client does not stream any audio or other data, it acts like a patchbay app that makes sure connections are the way I want them all the time, so there can be long intervals when there are no events being processed.

I have a few questions concerning the JackPort.getBuffer() documentation:

• What data does it contain?
• If it contains audio data, how is the data encoded?
• Why is getFloatBuffer() faster/"more efficient"?
• By how much? Is it still better than raw bytes even if I have to convert the floats back to bytes?

Jack is really verbose. It doesn't stop spamming my logs with messages like

Jack: JackActivationCount::Signal value = 0 ref = 7

that don't really have a value to me. Is there a way to reduce this?

I have a question.
https://stackoverflow.com/questions/62418077/jackmidi-eventwrite-time-parameter
I'm certain I fail crucial understanding, but how can I send midiMessages created in a Java/Swing application to another MidiPort(software/hardware) via Jack ?
I can't figure out how I can process those messages on the JackProcessCallback
https://github.com/sc3sc3/MidiJnaJackTest (example to show my issue )
I'm writing to the output port with JackMidi.eventWrite but 1 of 2 things happen,
the midiMessage arrives eternally repeated in a loop or the message does not arrive at all.
Thanks for your time and your work. Regards.

I thought I'd have a go at converting Catia to Kotlin, and am using your jnajack to interface.

I've just started, and have some basics working:

    val jack = Jack.getInstance()
    val options = EnumSet.of(JackOptions.JackNoStartServer)
    val status = EnumSet.noneOf(JackStatus::class.java)
    val client = jack.openClient("jacKot test", options, status)

    val bs = client.bufferSize
    val sr = client.sampleRate
//    val rt = client. ... no method here for is_real_time
    println("bs: $bs, sr: $sr")

I'm trying to get the is_realtime value from jack, but can't seem to find an exposed method that allows me to get the value.

I was hoping to find it on client.realTime (which would invoke client.isRealTime() in java).

I can see it in JackLibraryDirect, but JackLib isn't exposed on the client, so I can't call it. I was expecting a wrapper function like JackClient.getBufferSize() and JackClient.getSampleRate() (which I'm using in the above code), but can't see an equivalent JackClient.isRealTime() to use.