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Subject: Re: Extending the metronome plugin

Re: Extending the metronome plugin

From: Steph.MMyahoo <>
Date: Thu, 19 Jun 2014 10:12:40 +0200

I'm not a musician but my nephew is. He plays guitar flamenco. Does the
metronome offer only binary rythmn or also
different rhythmn ? If not it could be another interesting option to

Tshaw !!


Envoyé de mon aMac

Le 19/06/2014 08:19, Thomas Orgis a écrit :
> Hi,
> I would like to start a new attempt at improving the metronome plugin
> in Rockbox. There are two main points:
> 1. Support config files with programmed songs (sequences of patterns
> with different meters / tempi). I guess it would make sense to use the
> "tempo map" format of for this.
> 2. Have an optical mode, flashing the display (or parts of it) instead
> of or in addition to playing a sound.
> An Editor for these tempo maps inside the plugin would be bonus, but
> for starters I would consider the maps coming from elsewhere. My
> platform is a Sansa Clip+. My questions for the seasoned Rockbox devs
> are these:
> 1. Is there an API call to get a file selection dialog or should the
> plugin instead register as handler/codec for tempo map files to be started
> from the main "files" menu? Excuse me for not finding that answer
> myself, I didn't find an obvious place where API/plugin design is
> documented. Pointers welcome, of course.
> 2. Is using the display as flashing indicator LED feasible? I guess it
> should be for the Clip+, as it's just a little grid of OLEDs. But the
> question would be if it can be done quickly in a timely manner to serve
> as metronome (thinking of switching the whole upper or lower half for
> opposing tick/tock). Since there is no background illumination, it
> should be rather power conservative to have all black pixels most of
> the time, right? And regarding the speed/latency: I remember running
> Doom on that display, so that should technically work;-)
> I'm a seasoned C developer (some might recognize me for maintaining
> mpg123 over the last 8 years) and am confident to get the job done for
> giving Rockbox an awesome metronome, once I got the starting points. I
> did read the source of the existing metronome plugin and would start
> from there.
> Alrighty then,
> Thomas
Received on 2014-06-19

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