Mono VST plugins output only to the left channel
- Dominant language
- C++
- Stars
- 10.4k
- Forks
- 1.3k
- Avg merge
- 2d 13h
- Merged PRs (30d)
- 7
Description
### Bug Summary
When using a mono VST plugin via VeSTige, sound is produced only in the left channel instead of both channels.
#### Steps to reproduce
Load this Windows VST in VeSTige https://github.com/bsutherland/JuceOPLVSTi/releases/download/1.0.1/JuceOPLVSTi.x64.dll and play any note.
#### Expected behavior
Same audio should play in both channels.
#### Actual behavior
Audio is hard-panned to the left.
#### Affected LMMS versions
Version 1.3.0-alpha.1.102+g89fc6c9 (Linux/x86_64, Qt 5.6.3, GCC 5.4.0 20160609).
AppImage downloaded from here https://github.com/LMMS/lmms/releases/download/v1.3.0-alpha.1/lmms-1.3.0-alpha.1.102%2Bg89fc6c9-linux-x86_64.AppImage
Contributor guide
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Research direction
Reproduce the issue by loading the linked JuceOPLVSTi.x64.dll in VeSTige and playing a note. Trace VeSTige's VST audio-output handling for mono plugins, then verify that the same signal reaches both channels rather than being hard-panned left.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- audio-video-rtc, desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100