[gst-devel] Seeking on a http/ssh/ftp stream

[Sebastian Dröge]

Am Donnerstag, den 30.07.2009, 06:10 +0400 schrieb LRN:
> Tiago Katcipis wrote:
> > I have a multimedia server that provides live playing of stored files, i
> > receive a uri (that can be a SSH, FTP or HTTP), opens it, decode and send it
> > back to the client.
> >
> > Everything works fine, im using gnomevfs to open the uri, the problem starts
> > when i start to seek through the stream, it seens that gnomevfssrc does not
> > handle seeking. Im aware of the existence of a giosrc element too, but until
> > now i just have tried to work with gnomevfssrc.
> >
> > i already read something about that but it was old posts (saying that isnt
> > possible), so i wanted to be sure, is giosrc ou gnomevfssrc capable of doing
> > seeking on a http/ssh/ftp stream? I didnt find anything on the documentation
> > and i cant be sure if its not working because im doing something wrong or if
> > it wont work simply because it dont work.
> >
> > best regards,
> > Katcipis
> >   
> Everything boils down to this little macro:
> #define GST_GIO_STREAM_IS_SEEKABLE(stream) (G_IS_SEEKABLE (stream) &&
> g_seekable_can_seek (G_SEEKABLE (stream)))
> 
> Which uses this little function:
> http://library.gnome.org/devel/gio/stable/GSeekable.html#g-seekable-can-seek
> 
> Which checks G_IS_SEEKABLE() and returns can_seek property of the
> G_SEEKABLE_GET_IFACE
> So, if you want to know whether you can seek a particular GIOSTREAM or
> not, get its sources and grep for "->can_seek".

That and note that giosrc isn't automatically used for HTTP because it
doesn't support icecast, etc. Better use souphttpsrc, which can seek if
the server supports it.
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