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#21 |
diyAudio Member
Join Date: Apr 2005
Location: Pilsen
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Some daemons use SIGHUP for reload-configuration request.
Does the requesting process need to know the change has been accepted and performed, or is the asynchronous handling sufficient? Perhaps it may need it for GUI etc. |
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#22 |
diyAudio Member
Join Date: Jun 2018
Location: Straubing
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I'd be happy with just firing SIGHUP and assume that charges are respected.
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#23 | |
diyAudio Member
Join Date: Apr 2016
Location: Lund
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Quote:
How would you enter (or change) FIR parameters in the gui? Do you just pick a file, or actually enter or modify all the coefficients in an editor? SIGHUP for reloading would also work, but config reloading might not help with very fast changes from a slider. Last edited by HenrikEnquist; 28th February 2020 at 10:07 AM. |
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#24 |
diyAudio Member
Join Date: Jun 2018
Location: Straubing
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Actually at the moment I don't at all because FIR filters are not implemented as of now. I was planning to let the user choose a file with fuller coefficients, do some sanity checks on it and then hand it to the filter plugin/engine...
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#25 | |
diyAudio Member
Join Date: Mar 2007
Location: Michigan
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Quote:
Tfive: I use a FIFO to communicate parameters between the LADSPA plugin and the (separate) process that I call the "FIR engine" that does the actual convolution. I was not anticipating updating the FIR filter after the filter processing had been launched because this would involve moving thousands of coefficients over the FIFO, but it could certainly be done within the framework I have created. I just do not see a need for it, and most LADSPA hosts do not easily support real time changes to parameters. Instead the user can kill and restart with the new ones, if a change is desired. That is perfectly adequate for my intended application: loudspeaker crossovers. |
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#26 | |
diyAudio Member
Join Date: Jun 2018
Location: Straubing
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Quote:
I already read your posts, if i go the LADSPA route I will probably contact you about these, but as I mentionend in the pulseaudio world LADSPA plugins have some serious drawback which I'd like to mitigate.
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#27 | |
diyAudio Member
Join Date: Apr 2016
Location: Lund
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Quote:
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#28 |
diyAudio Member
Join Date: Jun 2018
Location: Straubing
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Yep, looki looki: Pulseaudio Crossover Rack :: T5! DIY Audio Software & Hardware
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#29 | |
diyAudio Member
Join Date: Apr 2016
Location: Lund
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Quote:
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#30 |
diyAudio Member
Join Date: Apr 2016
Location: Lund
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It turned out to be quite easy to reload on SIGHUP. I'm playing around with that in a (very) preliminary version. This is working better than expected.
If I reload a config with only BiQuads it's completely inaudible. If there are a FIR filters in the config there is a slight click since the overlap buffers of the FIR filters get cleared. It needs some cleaning up and more testing before I upload, but that shouldn't take long. |
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