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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Thanks Dimitrios, Tim. Rebuilt from GIT Master and now it is working.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gstreamer-devel [mailto:gstreamer-devel-bounces@lists.freedesktop.org]
<b>Im Auftrag von </b>Dimitrios Katsaros<br>
<b>Gesendet:</b> Donnerstag, 9. Juli 2015 10:04<br>
<b>An:</b> Discussion of the development of and with GStreamer<br>
<b>Betreff:</b> Re: Passing my own metadata<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">No, that is incorrect. The framework is build as such that you do not need to reimplement existing components to handle the passing for metadata.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Instead, every metadata type defines its own transformation function that allows you to manipulate metadata for any given case of transformation, weather it is passthrough or a copy transform.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">For an example of metadata handling you can check out:
<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/section-allocation-meta.html">
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/section-allocation-meta.html</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I would also suggest seeing how other people have implemented metadata. A good example, that is a bit more advanced, is the video metadata used by all video components. You can find the source file in gst-plugins-base/gst-libs/gst/video/gstvideometa.h/c<o:p></o:p></p>
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<p class="MsoNormal">Dimitrios<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Jul 9, 2015 at 8:50 AM, Thornton, Keith <<a href="mailto:keith.thornton@zeiss.com" target="_blank">keith.thornton@zeiss.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Have I understood correctly that if I wish to pass some metadata through my pipeline</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">MyFirstFilter ! videocrop ! videoscale ! videorate ! MySecondFilter</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I would need to re-implement the plugins videocrop, videoscale and videorate and implement
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">The copy_metadata, transform_metadata functions.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Grüße</span><o:p></o:p></p>
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_______________________________________________<br>
gstreamer-devel mailing list<br>
<a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a><br>
<a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><o:p></o:p></p>
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