RE: Rygel and DMP support

[Auro Tripathy <Auro Tripathy wdc com>]

Good report. How to you deal with Vala  development and debugging?

-Auro


-----Original Message-----
From: rygel-list [mailto:rygel-list-bounces gnome org] On Behalf Of Milan Plzik
Sent: Wednesday, October 02, 2013 1:13 AM
To: rygel-list gnome org
Cc: holger glasl streamunlimited com; Hannes Riedl; fionn cleary streamunlimited com
Subject: Rygel and DMP support

Good day,

   company I work for considers to use Rygel/gupnp/... as a UPnP stack in one of its products.  After some 
basic analysis and testing, we found out some limitations we would like to discuss:

    1) RygelMediaPlayer and playlist/multi-track support


    RygelMediaPlayer's interface does not provide API (nor any other
    public clas does) making playlist handling possible (e.g.
    next/previous commands, and also reporting of both current media and
    track).

    Since Rygel handles playlist logic internally in
    RygelPlayerController, it can lead to cases where next/prev controls
    don't work (if media playback was initiated via rygel, local UI does
    not know about media and vice versa).

    Without breaking ABI, this might be solvable by making
    RygelPlayerController public and enabling user to re-implement it,
    but it would be good to discuss this a bit more to have merge-able fix.


    2) Error reporting

    Rygel's API is not designed to allow error reporting (error codes)
    from player to UPnP control point in first place; e.g. there is no
    way to report an error client when invoking play() while no media is
    set. Rygel's code currently does not handle these cases and there is
    no hint about whose responsibility is to return error code. If it is
    solely rygel's responsibility, we will gladly supply patches which
    fix this behavior, otherwise the API might need significant changes.

Currently, these two issues are main blockers for us and we are interested in fixing them as soon as 
possible.If you have any suggestions/comments to any of these issues, we would like to merge our fixes to the 
upstream.

     Milan Plzik
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