[Bug 778118] New: mpegts: Can't distinguish extension_descriptor via gst_mpegts_find_descriptor

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=778118

            Bug ID: 778118
           Summary: mpegts: Can't distinguish extension_descriptor via
                    gst_mpegts_find_descriptor
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Mac OS
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: di85.park at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

There are extension_descriptor (descriptor_tag == 0x7F,
descriptor_tag_extension) in ES loop of PMT(Program Map Table). The
decriptor_tag value 0x7F will be shared between extension_descriptor but, our
gst_mpegts_find_descriptor() can distinguish depend on only descriptor_tag.
So if there are one more extension_descriptor in same ES loop of PMT, then we
only get the first of extension_descriptor.

This specification is about DVB standard. In my opinion, it looks like that we
need new function for find descriptor.
I want to hear your feedback.
Thanks.

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