[vlc-devel] [PATCH] Add new API to libvlc for persistent equalizer settings.

Mark Lee mark.lee at capricasoftware.co.uk
Thu Aug 30 22:39:04 CEST 2012

Replying to self...

On 29 August 2012 20:26, Mark Lee <mark.lee at capricasoftware.co.uk> wrote:

> I need to do some more testing on this. I have found instances where the
> equalizer is not restoring previously set values and I need to work out if
> it's just my test application that is broken or actually the patch itself
> that is broken.
> Please disregard this patch for now pending further testing.

What I have observed is...

Scenario 1 (not working):

1.1 Start playback.
1.2 Enable equalizer filter
1.3 Stop playback.
1.4 Start playback.

The equalizer filter is disabled.

Scenario 2 (working):

2.1 Enable equalizer filter.
2.2 Start playback.
2.3 Stop playback
2.4 Start playback

The equalizer filter remains enabled the whole time.

Repeat 2.3 and 2.4 as many times as you like and it still works.


1. If you enable the equalizer filter *after* you start playback, it will
'forget' to keep the equalizer enabled after you stop/start.

2. If you enable the equalizer filter *before* you start playback, it will
'remember' and keep the filter enabled even after you stop/start the media
multiple times.

I'm still working on finishing this patch, but right now I'm unsure what to
do about this particular problem.
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