[Bug 763045] New: glmemoryallocator: Buffer size miss-match when mapping GLMemory without PBO

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=763045

            Bug ID: 763045
           Summary: glmemoryallocator: Buffer size miss-match when mapping
                    GLMemory without PBO
    Classification: Platform
           Product: GStreamer
           Version: 1.7.90
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: nicolas.dufresne at collabora.co.uk
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

I'm running on an old Nvidia card without PBO support. In that case, there is
something wrong with the video alignment, and mapping the memory from avviddec
fails.

 "subclass map fail"

Digging further, it seems to fail a size check (size > mem->maxsize) in the CPU
access routine. That is likely a bug in the video alignment handling, as the
delta is bring size to a multiple of 32. This is a regression from 1.6 I
believe.

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