[Bug 760837] New: Implement the flow to check invalid adaption sets or representations according to ISO/IEC 23009-1 : section 8.3

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=760837

            Bug ID: 760837
           Summary: Implement the flow to check invalid adaption sets  or
                    representations according to ISO/IEC 23009-1 : section
                    8.3
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: r97922153 at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 319348
  --> https://bugzilla.gnome.org/attachment.cgi?id=319348&action=edit
patch to fix the issue

According to ISO/IEC 23009-1 : section 8.3, there are several checks should be
executed to filter out the adaption sets or representations which are not in
correct form.

For example, if it is a ISO BASE media file format On Demand profile with URN
="urn:mpeg:dash:profile:isoff-on-demand:2011" &
AdaptationSet at subsegmentAlignment does not present，the adaption set should be
ignored.

However, current MPD parser does not fully comply with this rule.
Hence when I played the MPD as attached TestSuit.mpd, the playback will stuck
by requesting an invalid URL link.

In the attached patch it tries to implement the flow to check the claimed rules
within ISO/IEC 23009-1 : section 8.3.

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