build problem with ambix plugins + LV2 - Linux-audio-dev

Matthias Kronlachner

13 Oct 13 Oct

9:16 p.m.

Hi Jörn, thanks for the report, I did not check the Linux build for long time and I accidentally deleted the wrapper. I fixed it, should build fine now. (The wrapper is not part of the official JUCE distribution, it was written by Filipe Coelho.) However, the GUI of the LV2 plug-ins does currently not work, therefore you have to use the native GUI of the host. This is particularly a problem for the (binaural-)decoder, where you have to load a preset in the GUI in order to generate output. You can build the plugins as standalone as well and connect the decoder via jack. You are used to that anyway, right :-) It would definitely need someone else to fix Linux related problems, but you can still nag me if something's wrong. Greets from Regensburg to Essen (I'm more close now...) Matthias On 12/10/14 22:08, Jörn Nettingsmeier wrote:

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Hi Matthias, I'm trying to build your ambix plugin suite on Linux using the LV2 wrapper, which fails with the following problem during makefile generation: CMake Error at CMakeLists_subprojects.txt.inc:104 (ADD_LIBRARY): Cannot find source file: /local/build/ambix/JUCE/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp .hxx .in .txx Call Stack (most recent call first): ambix_binaural/ambix_binaural/CMakeLists.txt:20 (INCLUDE) It seems that the JUCE tree in your repo does not have an LV2 directory at all, and neither has the official JUCE repo - has it been dropped? Any hints much appreciated, best greetings from Essen to Vilnius, Jörn

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Matthias Kronlachner

10:41 p.m.

On 13/10/14 21:34, Filipe Coelho wrote:

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On 13-10-2014 20:16, Matthias Kronlachner wrote:

Hi Jörn, thanks for the report, I did not check the Linux build for long time and I accidentally deleted the wrapper. I fixed it, should build fine now. (The wrapper is not part of the official JUCE distribution, it was written by Filipe Coelho.) However, the GUI of the LV2 plug-ins does currently not work, therefore you have to use the native GUI of the host. This is particularly a problem for the (binaural-)decoder, where you have to load a preset in the GUI in order to generate output. You can build the plugins as standalone as well and connect the decoder via jack. You are used to that anyway, right :-) It would definitely need someone else to fix Linux related problems, but you can still nag me if something's wrong.

Filipe here (Juce-LV2 wrapper author). What exactly is the problem with the LV2 UI? Which hosts have you tested it with? Does the VST UI work? Are you using the latest juce-lv2 code as available here? https://github.com/DISTRHO/DISTRHO-Ports/tree/master/libs/juce/source/modul… If you give me a link to the source I'll have a look at it.

Hi Filipe, thanks for the reply! I am using the latest version of your wrapper, just got it today from your repo. You find the plug-ins here: https://github.com/kronihias/ambix Some VST-UIs work, but not all. Eg. the decoder vst GUI works, but the LV2 version does only show an empty window. The encoder GUI crashes, might be OpenGL related. I tested it with Ardour-3.5.403. There might be some issues with the plug-ins itself as well, not connected to the wrapper. But all of them work under win and osx. Best, Matthias

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Matthias Kronlachner

11:06 p.m.

On 14/10/14 11:06, Filipe Coelho wrote:

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On 10/13/2014 09:41 PM, Matthias Kronlachner wrote:

On 13/10/14 21:34, Filipe Coelho wrote:

Filipe here (Juce-LV2 wrapper author). What exactly is the problem with the LV2 UI? Which hosts have you tested it with? Does the VST UI work? Are you using the latest juce-lv2 code as available here? https://github.com/DISTRHO/DISTRHO-Ports/tree/master/libs/juce/source/modul… If you give me a link to the source I'll have a look at it.

Hi Filipe, thanks for the reply! I am using the latest version of your wrapper, just got it today from your repo. You find the plug-ins here: https://github.com/kronihias/ambix Some VST-UIs work, but not all. Eg. the decoder vst GUI works, but the LV2 version does only show an empty window. The encoder GUI crashes, might be OpenGL related. I tested it with Ardour-3.5.403.

Well after building the LV2 code the issue is clear - you do not have proper URIs for the plugins. LV2 uses URIs to identify plugins, see http://en.wikipedia.org/wiki/Uniform_resource_identifier Making the LV2 URI a single plugin name is very wrong and against the spec. If you don't have a domain you can use "urn:ambix:PLUGIN". The URI doesn't have to exist on the internet, it's only used locally to identify the plugin. After setting a proper LV2 URI the UI appears and works as usual [1]. In short, just change the broken JucePlugin_LV2URI macro in your AppConfig.h files for a real URI and it should work. [1] - http://i.imgur.com/FSqaxn0.png

Thanks Filipe, the UIs do work now. One things is strange though, if you open the UI and close it several times the GUI moves out of the window. There seems to be something wrong with the window borders. Any idea? Matthias

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Matthias Kronlachner

11:27 p.m.

On 14/10/14 23:18, Filipe Coelho wrote:

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On 14-10-2014 22:06, Matthias Kronlachner wrote:

On 14/10/14 11:06, Filipe Coelho wrote:

On 10/13/2014 09:41 PM, Matthias Kronlachner wrote:

On 13/10/14 21:34, Filipe Coelho wrote: > Filipe here (Juce-LV2 wrapper author). > > What exactly is the problem with the LV2 UI? > Which hosts have you tested it with? > Does the VST UI work? > > Are you using the latest juce-lv2 code as available here? > https://github.com/DISTRHO/DISTRHO-Ports/tree/master/libs/juce/source/modul… > > If you give me a link to the source I'll have a look at it. > > Hi Filipe, thanks for the reply! I am using the latest version of your wrapper, just got it today from your repo. You find the plug-ins here: https://github.com/kronihias/ambix Some VST-UIs work, but not all. Eg. the decoder vst GUI works, but the LV2 version does only show an empty window. The encoder GUI crashes, might be OpenGL related. I tested it with Ardour-3.5.403.

Well after building the LV2 code the issue is clear - you do not have proper URIs for the plugins. LV2 uses URIs to identify plugins, see http://en.wikipedia.org/wiki/Uniform_resource_identifier Making the LV2 URI a single plugin name is very wrong and against the spec. If you don't have a domain you can use "urn:ambix:PLUGIN". The URI doesn't have to exist on the internet, it's only used locally to identify the plugin. After setting a proper LV2 URI the UI appears and works as usual [1]. In short, just change the broken JucePlugin_LV2URI macro in your AppConfig.h files for a real URI and it should work. [1] - http://i.imgur.com/FSqaxn0.png

Thanks Filipe, the UIs do work now. One things is strange though, if you open the UI and close it several times the GUI moves out of the window. There seems to be something wrong with the window borders. Any idea?

Probalby some issue in juce. Can you link to a screenshot of the issue?

I actually have the same issue when my plugin gets resized in osx. Might be the same problem with Juce. Here are screenshots: 1st time opened: http://imgur.com/1R5CUaI 2nd: http://imgur.com/7vdThSt 3rd: http://imgur.com/2WfZsg9

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