[gstreamer-bugs] [Bug 604557] New: [decodebin2] parallelize decoding

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=604557
  GStreamer | gst-plugins-base | git

           Summary: [decodebin2] parallelize decoding
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: wingo at pobox.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


I have a hardware decoder that can usefully be written to and read from via
different threads. I have thus made the upload-to-hardware and
download-from-hardware pieces into different elements; when I make a pipeline,
for maximum performance, I separate them by a queue.

However this "optimization" is not automatically enabled by decodebin2

I'd imagine that this could be a useful pattern in decodebin2, somehow. If you
do have a multi-stage decoding pipeline, or can run e.g. a colorspace converter
or what-have-you in another thread, perhaps we should add an option to put
build queues into decoding pipelines. An "insert-queue" signal, or something.

What say the Regents of GStreamer, Inc.?

Andy

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