[vlc] JVLC event support

[Javier Gálvez Guerrero]

Any feedback for these JVLC events support? I've been playing with media
player's events and they seem the root of all playlists problems, aren't
they? It seems a matter of "connection" between libvlc and JNA used in JVLC,
but I'm not sure about it as I am not a guru programmer =).

Any foreseen future work on this?

Regards,
Javi

2008/9/12 Keith Kyzivat <kkyzivat at tripleplayint.com>

> This is primarily for Littlejohn, however I want to keep this on-list so
> everyone can see.
>
> I've been using JVLC for java-based video playback with overlay (doing
> actual rendering in java -- i.e. no hardware rendering),
> however due to some fundamentals of Mpeg2 transport streams, I have now had
> to use jvlc/vlc to change the encapsulation
> format of videos from transport streams to program streams.
>
> I do have a set of classes and a unit test put together that converts a
> video to the Mpeg2 Program Stream encapsulation format now, providing
> feedback and cancellation using a swing ProgressMonitor, however I have
> issues when reaching the end of the conversion.  Specifically, I never
> receive a media player "endReached" event.  I've tried a number of things I
> could do that xtophe on the IRC channel suggested, however none of the ones
> I've tried have worked properly.
>
> Here are the suggestions I've received from xtophe:
>
> Ones I've tried, but have failed to fix the problem:
>
>    - Try individual mrl option instead of global for sout specifier (":"
>    instead of "--") (because '--sout' might keep the stream open for another
>    item) -- TRIED, FAILED
>    - Use the "--no-sout-keep" option -- TRIED, FAILED
>
>
> Ones I have not tried yet, as I am not using MediaList/MediaListPlayer or
> PlayList, since they have no event support.
>
>    - Add the "vlc://quit" mrl to the end of the playlist
>    - Add the "vlc://nop" mrl to the end of the playlist
>
>
> Since I'd like asynchronous playback with callbacks when the conversion is
> finished, I'm interested to get event support added to MediaListPlayer, and
> to complete the asynchronous play methods (for which there exists methods,
> but it doesn't behave as the signature suggests right now, just ignoring the
> boolean synchronous argument).  Adding event support to the other areas
> would be nice as well -- MediaList and MediaDescriptor.
>
> I'm willing to put in some work to implement some of this, but I was
> informed in the IRC channel that LittleJohn may have a partial
> implementation of this work already.
>
> So, LittleJohn, I'm interested to hear if you have a partial implementation
> or not -- as I don't want to implement something if one already exists --
> both to save work, and to not step on your toes.
>
> Oh and one more thing -- an outstanding question I had:
>
> Does a MediaListPlayer (whatever similar name the underlying c 'object' is)
> emit the MediaPlayer series of events (MediaPlayerPlaying, ...
> MediaPlayerStopped, etc) as well as the MediaList series of events
> (MediaListPlayerPlayed, MediaListPlayerNextItemSet, MediaListPlayerStopped)?
>
>
>
> Thanks!
>
> --
> Keith Kyzivat
>
> SIPez LLC.
> SIP VoIP, IM and Presence Consulting
> http://www.SIPez.com
> tel: +1 (617) 273-4000
>
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