[vlc-devel] GSoC 2026 - Interest in Advanced Audio Filters project

[Abhinav Aswin]

Hi,

I'm Abhinav Aswin, a student interested in the Advanced Audio Filters
project for GSoC 2026.

I've been contributing to the audio_filter module recently:
- !8591: fix realloc() missing sizeof(float) in chorus_flanger (approved by
maintainer)
- !8596: fix linear interpolation in chorus_flanger delay buffer
- !8583: use add_bool for bargraph and silence options

While working on these, I've been studying VLC's audio filter architecture
and I'm particularly interested in implementing a stereo to 5.1 upmix
filter for GSoC 2026 — similar to Prologic-II matrix decoding. This would
allow VLC users with 5.1 speaker setups to get a proper surround experience
from stereo content.

I believe this fits well within the Advanced Audio Filters project scope
mentioned on the GSoC ideas page, specifically the upmixing task.

Could the mentor (unidan) or anyone familiar with the project share
thoughts on this direction? I'd like to align my proposal with the team's
priorities before writing the full proposal.

Thank you for your time and for the feedback on my MRs.

Best regards,
Abhinav Aswin
GitLab: https://code.videolan.org/abhinav_04
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