[gstreamer-bugs] [Bug 435557] New: [ximagesink] if no XShm available, distorted image with odd widths

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS
           Summary: [ximagesink] if no XShm available, distorted image with
                    odd widths
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


When XShm is not available, XCreateImage() is used and will not always return
an ximage->bytes_per_line that's a multiple of four. However, almost all
elements in GStreamer will assume a row stride that's a multiple of 4 for RGB.

This leads to a distorted image in those cases.

To reproduce:

  - add #undef HAVE_XSHM to the top of sys/ximage/ximagesink.h

  - try  gst-launch-0.10 videotestsrc ! video/x-raw-rgb,width=99 ! ximagesink


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