[Bug 731783] New: h265parse: incorrect value used to check size of hvcC data

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=731783
  GStreamer | gst-plugins-bad | git

           Summary: h265parse: incorrect value used to check size of hvcC
                    data
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: floobleflam at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=278601)
 View: https://bugzilla.gnome.org/attachment.cgi?id=278601
 Review: https://bugzilla.gnome.org/review?bug=731783&attachment=278601

Fix value used in hvcC size check

In ISO/IEC 14496-15, the minimum size of a HEVCDecoderConfigurationRecord
(i.e., the contents of a hvcC box) is 23 bytes. However, the code in h265parse
checks that the size of this data is not less than 28 bytes, and it refuses to
accept caps if the check fails. The result is that standards-conformant streams
that don't carry any parameter sets in their hvcC boxes won't play.

The attached patch fixes this check and also the error message that is output
if the check fails.

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