[MPRIS] TrackChanged Signal

[Mirsal Ennaime]

Hi Kevin,

On Tue, 2012-08-14 at 17:23 -0400, Kevin Anthony wrote:
> I think it's useful for the player to emit a signal when the track is
> changed. An example of this being useful is your querying the player's
> metadata and displaying it on a LCD screen.  This prevents you from having
> to query the metadata contently, you simply listen for the signal and when
> you hear it, re-query the metadata.

It is useful indeed, and it's already there[1] !

Players must emit the org.freedesktop.DBus.Properties.PropertiesChanged signal
when the Metadata property changes, so track changes can be detected using
the mpris:trackid attribute.

Whether the current way is too convoluted or not clear enough can still
be discussed though :)


[1] http://specifications.freedesktop.org/mpris-spec/2.2/Player_Node.html#Property:Metadata


Best,
-- 
mirsal 
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