[vlc-devel] libvlc_media_descriptor_... setting mrl question

jboileau jboileau at gmail.com
Thu Jan 24 19:32:11 CET 2008

Hi Pierre,

I just took a closer look at the API and I will try creating a media
instance that will be used for the life of my application and use
libvlc_media_instance_set_media_descriptor for each new file I play. That
way I won't release the media instance from inside my event. This seems like
a much better idea. I'll let you know how it turns out.


On Jan 24, 2008 9:04 AM, jboileau <jboileau at gmail.com> wrote:

> Hi Pierre,
> Well yes the problem is with the release of the media instance and it
> probably make sense that it hangs there. But I don't know how to do things
> diffrently. If I need to create a new media descriptor and then get a new
> media instance from it, if I don't release the previous one won't I end up
> with memory leaks? Here is what I do in my event callback. Any suggestions
> on what to do differently for things to work?
> I detach from the event manager (libvlc_event_detach)
> I release the media instance (libvlc_media_instance_release)
> --> and it hangs right here as expected <---
> I create a new media descriptor (libvlc_media_descriptor_new)
> I add options (libvlc_media_descriptor_add_option)
> I create a media instance (
> libvlc_media_instance_new_from_media_descriptor)
> I release the media descriptor (libvlc_media_descriptor_release)
> I get the new event manager (libvlc_media_instance_event_manager)
> I attach to it (libvlc_event_attach)
> I start the play (libvlc_media_instance_play)
> I hope this helps you figure things out. Let me know if you need more
> details.
> As always: thanks for your help it is greatly appreciated!
> Jacques
>   On Jan 23, 2008 5:58 PM, Pierre d'Herbemont <pdherbemont at free.fr> wrote:
> >
> >  On Jan 23, 2008, at 10:48 PM, jboileau wrote:
> >
> > My reason to do that is to be able to start a new play from inside the libvlc_MediaInstanceReachedEnd
> > event. I may not be doing things correctly but presently it simply hangs in
> > my callback. Probably because I am trying to release something that is
> > probably what is calling me back! :-) The media descriptor. I have
> > circumvented the problem by posting myself a message (I am working under
> > Windowzzzz) and this lets me do what I want since in the handler for this
> > message I am out of the libvlc_MediaInstanceReachedEnd event callback. But I
> > would rather not have to resort to this double callback scheme to get things
> > working.
> >
> >
> > This is a bit weird cause you shouldn't get issue when releasing the
> > media descriptor in the media_instance callback, unless you are releasing
> > the media instance that currently plays the media descriptor.
> >
> > Tell me if you encounters more trouble, I'll have a look over the
> > weekend.
> >
> > Pierre.
> >
> > _______________________________________________
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> >
> >

Jacques Boileau
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