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zamaudio / zam-plugins

Collection of LADSPA/LV2/VST/JACK audio plugins for high-quality processing
http://www.zamaudio.com/?p=976
GNU General Public License v2.0
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Cross build for ARM: Segmentation fault during ZamVerb lv2-ttl-generate #77

Closed schnitzeltony closed 3 years ago

schnitzeltony commented 4 years ago

Preliminary background: I build all music stuff cross with openembedded/yocto. Since the DPF turtle generation with lv2-ttl-generator does not work in cross builds - plugins are build for ARM - I implemented two ways to get around:

  1. Manipulate build to keep plugins names for ttl-generation instead of performing lv2-ttl-generator and postpone turtle generation with qemu. Some plugins cause qemu crashes (zamp-plugins is one of those) so I created a second way:
  2. Keep plugins name during compile (same as 1), install this information on target machine and run all turtle generation at first boot.

Symptom: Running ttl-genaration on target machine segfaults for ZamVerb:

root@raspberrypi3:ZamVerb.lv2# lv2-ttl-generator /usr/lib/lv2/ZamVerb.lv2/ZamVerb_dsp.so Generate ttl data for '/usr/lib/lv2/ZamVerb.lv2/ZamVerb_dsp.so', basename: 'ZamVerb_dsp' convolution: samplerate mismatch preset:48000 host:44100 Segmentation fault

Debugging the symptom: Here is a screenshot of the point of crash: zita-crash

This is all I have currently - if you cannot reproduce and want me to set breakpoints / take further screenshots - let me know

zamaudio commented 4 years ago

Looks like a bug in zita-convolver for ARM ? Maybe you need to disable vector mode, I'm not sure.

schnitzeltony commented 3 years ago

Meanwhile I moved builds to aarch64 and the problem is gone there. Since - as you mentioned - it seems a problem outside this project, I close this one. Thanks for looking into.