Re: [LAD] How can a LV2 plugin know on what host's MIDI Channel it's on?
On 16/10/14 20:39, Paul Davis wrote: On Thu, Oct 16, 2014 at 2:21 PM, Phil CM phi...@gnu.org mailto:phi...@gnu.org wrote: On 16/10/14 19:02, Bill Gribble wrote: Here's a vote for anything (lv2 extension, OSC convention, or something else) that makes information about how a host is using a plugin available to the plugin. This kind of introspection is useless for most plugins, but those that need it can't get the information any other way. Indeed, most plugins seem to get this in information as to what track they are in (Calf MonoSynth, randomly) so how do I implement that in my plugin? :) what makes you think that Calf MonoSynth knows what track or channel it is in? The fact that when I put it on a MIDI track (and the hosts decide witch MIDI channel this track sends messages on) I can hear it without telling him said channel (and I only hear it on that track)..? ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] How can a LV2 plugin know on what host's MIDI Channel it's on?
On Fri, 17 Oct 2014, Phil CM wrote: On 16/10/14 20:39, Paul Davis wrote: Indeed, most plugins seem to get this in information as to what track they are in (Calf MonoSynth, randomly) so how do I implement that in my plugin? :) what makes you think that Calf MonoSynth knows what track or channel it is in? The fact that when I put it on a MIDI track (and the hosts decide witch MIDI channel this track sends messages on) I can hear it without telling him said channel (and I only hear it on that track)..? I would suggest that Calf Monosynth is channel agnostic. That is it ignores the channel information and uses midi events for any channel. However in this case it only plays midi info for one channel because that is all the host sends. If I load The Calf Jack Host with the monosynth, it will respond to any channel from the keyboard. Calf jack host does no filtering. However if I run it through qmidiroute with only channel 1 enabled I get no sound when the keyboard is any channel but 1. -- Len Ovens www.ovenwerks.net ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] Fwd: Re: How can a LV2 plugin know on what host's MIDI Channel it's on?
I agree with Len. On Thu, 2014-10-16 at 12:29 -0700, Len Ovens wrote: That control could have an option to accept all channels too so that the host could do filtering. JFTR accept all channels, as if they were one channel is named omni mode :). ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] [Bulk] Re: How can a LV2 plugin know on what host's MIDI Channel it's on?
On Fri, 2014-10-17 at 08:25 +0100, Phil CM wrote: The fact that when I put it on a MIDI track (and the hosts decide witch MIDI channel this track sends messages on) I can hear it without telling him said channel (and I only hear it on that track)..? Len explained it ;). Omni mode: http://lists.linuxaudio.org/pipermail/linux-audio-dev/2014-October/035575.html ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] [Bulk] Re: How can a LV2 plugin know on what host's MIDI Channel it's on?
On Fri, 2014-10-17 at 01:12 -0700, Len Ovens wrote: I would suggest that Calf Monosynth is channel agnostic. That is it ignores the channel information and uses midi events for any channel. Len explained it ;). Omni mode: http://lists.linuxaudio.org/pipermail/linux-audio-dev/2014-October/035575.html It can be tested, if it is done that way, by recording or editing two or more channels with one Qtractor MIDI track. Btw. Qtractor's track properties dialog allows to select channel 1 to 16, while other sequencers might provide to select from 1 to 16 + any or all, Qtractor provides to check omni. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
[LAD] How can an LV2 plugin UI get the value of a control port from the plugin?
When I turn the controls in my UI, the controls move in the hosts generic UI ; But when I turn the controls in the hosts generic UI, nothing moves in the UI. Also each time the UI is opened, the widgets are reset at maximum (not the values). How can I /get/ the control ports values from the UI perspective? --Phil ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] How can an LV2 plugin UI get the value of a control port from the plugin?
See, I know the value of each control port this way:
static void port_event(LV2UI_Handle ui,
uint32_t port_index,
uint32_t buffer_size,
uint32_t format,
const void * buffer)
{
KisGUI *self = (KisGUI *) ui;
if (port_index == 3)
cout Volume is (*static_castconst float*(buffer))
Format is format endl;
cout Port event on index port_indexFormat is
format endl;
return;
}
It's call at session opening, so that would already solve the problem at
/that/ time.
But how can I access the UI widget to pass it the value?
The problem is to find documentation on NTK... All plugin sources that I
can find use Qt or GTK...
But either way, I need to uderstad te logic of it : How does the UI
*read* values?
On 17/10/14 13:30, Phil CM wrote:
When I turn the controls in my UI, the controls move in the hosts
generic UI ;
But when I turn the controls in the hosts generic UI, nothing moves in
the UI.
Also each time the UI is opened, the widgets are reset at maximum (not
the values).
How can I /get/ the control ports values from the UI perspective?
--Phil
___
Linux-audio-dev mailing list
Linux-audio-dev@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev
--
Philippe xaccrocheur Coatmeur
http://bitbucket.org/xaccrocheur / https://github.com/xaccrocheur
http://opensimo.org/play/
___
Linux-audio-dev mailing list
Linux-audio-dev@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] How can an LV2 plugin UI get the value of a control port from the plugin?
On Fri, Oct 17, 2014 at 1:30 PM, Phil CM phi...@gnu.org wrote: Also each time the UI is opened, the widgets are reset at maximum (not the values). Hi Phil, Glad to see you're excited and working hard on learning LV2! Checkout the example plugins: they show how things work. In the UI, there is a port_event() function. It tells the UI what port changed, and what its current value is. Use this to do widget-setValue( newValue ); and you're done ;) Eg (from OpenAV's ArtyFX, Bitta plugin) https://github.com/harryhaaren/openAV-ArtyFX/blob/master/bitta/gui/ui.cxx#L131 How can I *get* the control ports values from the UI perspective? In answer to your Q, how to get, you don't: you're told when there's a new value. HTH, Cheers, -Harry -- http://www.openavproductions.com ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
