12 Oct
2013
12 Oct
'13
5:36 p.m.
I would just bypass the LV2 host altogether and use
shared memory to get
the audio data to the GUI.
...and use the same mechanism to send the sample rate.
That's through Instance-Access right?
That's exactly what I want to avoid - this plugin is meant to be used
in Ingen and Ingen doesn't support this.
LV2 UIs can get the sample-rate using the options
extension.
Hosts will set the appropriate option lv2param:sampleRate which the UI
can get on initialization.
I tried that but without success.
I'm using the LVTK library to develop this plugin. My approach is to:
- use the get_supplied_options() method to access the host supplied options
- iterate until I find SampleRate
problem is get_supplied_options() returns 0 options when called from the UI.
Any advice?
Aurélien
12 Oct
12 Oct
6:24 p.m.
On Sat, 2013-10-12 at 16:36 +0100, Aurélien Leblond wrote:
No, not using any extensions at all. Just regular shared memory.
But if you are writing it for a specific host, use whatever extensions
it supports. For Ingen I suppose atoms would be the best way.
--lls
I would just
bypass the LV2 host altogether and use shared memory to get
the audio data to the GUI.
...and use the same mechanism to send the sample rate.
That's through Instance-Access right?
That's exactly what I want to avoid - this plugin is meant to be used
in Ingen and Ingen doesn't support this. 
8:16 p.m.
On 10/12/2013 04:36 PM, Aurélien Leblond wrote:
Speak to your host developer.
In my host LV2 UI code I have this:
https://github.com/falkTX/Carla/blob/master/source/bridges/CarlaBridgeUI-LV…
The sample-rate is passed via options feature to the UI, among other things.
btw, option extension uses lv2:sampleRate and not lv2param:sampleRate,
my mistake.
LV2 UIs can
get the sample-rate using the options extension.
Hosts will set the appropriate option lv2param:sampleRate which the UI
can get on initialization.
I tried that but without success.
I'm using the LVTK library to develop this plugin. My approach is to:
- use the get_supplied_options() method to access the host supplied options
- iterate until I find SampleRate
problem is get_supplied_options() returns 0 options when called from the UI.
Any advice? 
14 Oct
14 Oct
5:08 a.m.
Hello,
problem is get_supplied_options() returns 0 options when called from the UI.
get_supplied_options() should work fine both in UIs and Plugins. My guess
is the host only gives the sampleRate option to the Plugin and not the UI.
Which host are you working with?
Also, you can compile the UI with a -DLVTK_DEBUG=1, and the console will
print the validation status for any features passed in by the host.
You could also from the UI send a patch get message and make sure the
Plugin knows how to respond appropriately.
On Sat, Oct 12, 2013 at 1:16 PM, Filipe Coelho <falktx(a)gmail.com> wrote:
On 10/12/2013 04:36 PM, Aurélien Leblond wrote:
LV2 UIs can get the sample-rate using the options extension.
Hosts will set the appropriate option lv2param:sampleRate which the UI
can get on initialization.
I tried that but without success.
I'm using the LVTK library to develop this plugin. My approach is to:
- use the get_supplied_options() method to access the host supplied options
- iterate until I find SampleRate
problem is get_supplied_options() returns 0 options when called from the UI.
Any advice?
Speak to your host developer.
In my host LV2 UI code I have this:
https://github.com/falkTX/Carla/blob/master/source/bridges/CarlaBridgeUI-LV…
The sample-rate is passed via options feature to the UI, among other
things.
btw, option extension uses lv2:sampleRate and not lv2param:sampleRate, my
mistake.
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4 participants
participants (4)
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Aurélien Leblond -
Filipe Coelho -
Lars Luthman -
Michael Fisher