[Bug 739693] New: assrender doesn't render frames into given memory area

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=739693
  GStreamer | gst-plugins-base | git

           Summary: assrender doesn't render frames into given memory area
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: fraxinas at opendreambox.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


i've done some debugging and by the looks of it, the videosrc buffer data
pointer
changes during this line (in gst_ass_render_chain_video):

gst_video_frame_map (&frame, &render->info, buffer, GST_MAP_WRITE);

if the rendering is supposed to be written into a specially allocated dma area,
this will cause the need for an extra memcpy.

this may be a general gst_video_frame_map problem or just me not correctly
understanding yet, how this works.

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