[gstreamer-bugs] [Bug 344013] New: [oggdemux] use parsers to suck less

[GStreamer (bugzilla.gnome.org)]

Do not reply to this via email (we are currently unable to handle email
responses and they get discarded).  You can add comments to this bug at
http://bugzilla.gnome.org/show_bug.cgi?id=344013
 GStreamer | gst-plugins-base | Ver: HEAD CVS

           Summary: [oggdemux] use parsers to suck less
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: bilboed at bilboed.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Oggdemux currently has several issues:

* it doesn't timestamp outgoing buffers properly
* its seeking algorithm is broken too

This is mainly due to the fact that the demuxer doesn't use parsers to figure
out timestamps and keyframe position.

OggDemux should be rewritten using parsers internally to:
_ output properly timestamped buffers
_ figure out needed keyframe granulepos for a given position in time

The currently available parsers are:
_ vorbisparse
_ theoraparse
_ ogmaudioparse (for application/x-ogm-audio streams)
_ ogmvideoparse (for application/x-ogm-video streams)
_ ogmtextparse (for application/x-ogm-text streams)

The parsers which need creating are:
_ speexparse , for audio/x-speex streams
_ diracparse, for video/x-dirac streams
_ ....

These parsers should be able to do the following:
_ be able to handle "convert" queries on their sinkpad. the DEFAULT format on
their sinkpad being the granulepos. This will allow oggdemux to query for
granulepos<->time conversions.
_ be able to handle a custom query "needed-granulepos" on its sinkpad which
returns the needed granulepos to decoded the requested position in a given
format. This allows oggdemux to know which is the most optimal position to
start outputting from.
_ properly timestamp outgoing buffers.


-- 
Configure bugmail: http://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.