Hi, Thanks so much for your reply! Do you mean that if I link the tee element to gstomx component, such as omx_videomixer, it will do memcpy to fill the input buffer of omx_videomixer? <div class="gmail_quote">2012/11/16 Stirling Westrup [via GStreamer-devel] <<a href="/user/SendEmail.jtp?type=node&node=4656940&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> <blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote"> On Mon, Nov 12, 2012 at 9:11 PM, bboyavatar <<a href="http://user/SendEmail.jtp?type=node&node=4656933&i=0" rel="nofollow" target="_blank" link="external">[hidden email]</a>> wrote: > Hi, I have a question about the tee element. It is said that this element > splits the input data and feeds multiple output pads with the same data. I > read the sourc code and find that it uses gst_pad_push_data()function to > feed data to the srcpads. So, I wonder if it does the memcpy or just feeds > the srcpads with the buffer reference. > Could someone answer me? Thanks so much! > That's a more complex question than it sounds like. Whenever possible gstreamer passes references to buffers rather than using memcpy, but there are cases where this won't work. For example, if your tee connects to sinks that produce hardware buffers to fill out, then gstreamer will do memcpy operations to fill the hardware buffers. -- Stirling Westrup Programmer, Entrepreneur. <a href="https://www.linkedin.com/e/fpf/77228" rel="nofollow" target="_blank" link="external">https://www.linkedin.com/e/fpf/77228</a> <a href="http://www.linkedin.com/in/swestrup" rel="nofollow" target="_blank" link="external">http://www.linkedin.com/in/swestrup</a> <a href="http://technaut.livejournal.com" rel="nofollow" target="_blank" link="external">http://technaut.livejournal.com</a> <a href="http://sourceforge.net/users/stirlingwestrup" rel="nofollow" target="_blank" link="external">http://sourceforge.net/users/stirlingwestrup</a> _______________________________________________ gstreamer-devel mailing list <a href="http://user/SendEmail.jtp?type=node&node=4656933&i=1" rel="nofollow" target="_blank" link="external">[hidden email]</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="nofollow" target="_blank" link="external">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> <hr color="#cccccc" size="1" noshade> <div style="font:12px/normal tahoma,geneva,helvetica,arial,sans-serif;color:rgb(68,68,68);font-size-adjust:none;font-stretch:normal"> <div style="font-weight:bold">If you reply to this email, your message will be added to the discussion below:</div> <a href="http://gstreamer-devel.966125.n4.nabble.com/How-does-the-tee-element-split-data-to-multiple-pads-tp4656880p4656933.html" target="_blank" rel="nofollow" link="external">http://gstreamer-devel.966125.n4.nabble.com/How-does-the-tee-element-split-data-to-multiple-pads-tp4656880p4656933.html</a> </div> <div style="font:11px/1.5em tahoma,geneva,helvetica,arial,sans-serif;color:rgb(102,102,102);margin-top:0.4em;font-size-adjust:none;font-stretch:normal"> To unsubscribe from How does the tee element split data to multiple pads?, <a href="" target="_blank" rel="nofollow" link="external">click here</a>. <a style="font:9px/normal serif;font-size-adjust:none;font-stretch:normal" href="http://gstreamer-devel.966125.n4.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml" rel="nofollow" target="_blank" link="external">NAML</a> </div></blockquote></div> -- 刘冰 <hr align="left" width="300" /> View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/How-does-the-tee-element-split-data-to-multiple-pads-tp4656880p4656940.html">Re: How does the tee element split data to multiple pads?</a> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.