<div dir="ltr">Hi,<div><br></div><div>Are you setting the size in your code?</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 14, 2016 at 10:46 PM, Thornton, Keith <span dir="ltr"><<a href="mailto:keith.thornton@zeiss.com" target="_blank">keith.thornton@zeiss.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div lang="DE" link="blue" vlink="purple"> <div> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi, <u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I don’t know what you are doing but when I call gst_buffer_map for my Full HD frames, I get info.size=8294400 and one single block of memory which I can copy in a single operation.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></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:<a href="mailto:gstreamer-devel-bounces@lists.freedesktop.org" target="_blank">gstreamer-devel-bounces@lists.freedesktop.org</a>] <b>Im Auftrag von </b>Kiran Kumar<br> <b>Gesendet:</b> Mittwoch, 15. Juni 2016 00:27<br> <b>An:</b> Discussion of the development of and with GStreamer<br> <b>Betreff:</b> Re: Grabbing frames from GStreamer pipeline<u></u><u></u></span></p><div><div class="h5"> <p class="MsoNormal"><u></u> <u></u></p> <div> <p class="MsoNormal">I also used gst_base_sink_set_blocksize() to set the blocksize when the sink is in pull mode. Nothing changed.<u></u><u></u></p> <div> <p class="MsoNormal"><u></u> <u></u></p> </div> <div> <p class="MsoNormal">Thanks,<u></u><u></u></p> </div> <div> <p class="MsoNormal">Kiran<u></u><u></u></p> </div> </div> <div> <p class="MsoNormal"><u></u> <u></u></p> <div> <p class="MsoNormal">On Mon, Jun 13, 2016 at 10:51 PM, Thornton, Keith <<a href="mailto:keith.thornton@zeiss.com" target="_blank">keith.thornton@zeiss.com</a>> wrote:<u></u><u></u></p> <div> <div> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi,</span><u></u><u></u></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I think you are mistaken when you say “</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#666666">The gst_app_sink_pull_sample(), gst_sample_get_buffer() and gst_buffer_map() hands out only streams which are of size 4096 bytes each”. </span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666">I am using these APIs to pass full 1920 * 1080 frames. You should provide more details so that we can maybe see what is going wrong.</span><u></u><u></u></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666"> </span><u></u><u></u></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><u></u><u></u></p> <p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></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:<a href="mailto:gstreamer-devel-bounces@lists.freedesktop.org" target="_blank">gstreamer-devel-bounces@lists.freedesktop.org</a>] <b>Im Auftrag von </b>Kiran Kumar<br> <b>Gesendet:</b> Montag, 13. Juni 2016 21:20<br> <b>An:</b> <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank"> gstreamer-devel@lists.freedesktop.org</a><br> <b>Betreff:</b> Grabbing frames from GStreamer pipeline</span><u></u><u></u></p> <div> <div> <p class="MsoNormal"> <u></u><u></u></p> <div> <div> <p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#666666">Hi,</span><u></u><u></u></p> </div> <div> <p class="MsoNormal"> <u></u><u></u></p> </div> <div> <p class="MsoNormal">I am new to this forum. <span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#666666"><br> <br> I am trying to pull frames from gstreamer pipeline and feed it to user application. I am using appsink pad to pull out the frames while the pipeline is in the PLAYING state.<br> <br> Problem:<br> 1. The gst_app_sink_pull_sample(), gst_sample_get_buffer() and gst_buffer_map() hands out only streams which are of size 4096 bytes each. I tried changing the blocksize but, there is no effect.<br> <br> My goal:<br> To extract or pull a single frame into a single buffer and feed this buffer as input to my application which does some image processing (I am not using OpenCV).<br> <br> I want to pull every frame from the video-source, populate the buffer (each frame is associated with a particular buffer) and finally feed the buffer to my application. I don't want to dump this frame into a file in my filesystem.<br> <br> Questions:<br> 1. Are there any other ways in which I can achieve my goal without using appsink?<br> 2. If using appsink is the only way I can pull data from gstreamer, how can I achieve my goal using appsink?</span><u></u><u></u></p> </div> <div> <p class="MsoNormal"> <u></u><u></u></p> </div> <div> <p class="MsoNormal">I appreciate any guidance.<span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#666666"><br> <br> Thanks in advance.<br> Kiran</span><u></u><u></u></p> </div> </div> </div> </div> </div> </div> <p class="MsoNormal" style="margin-bottom:12.0pt"><br> _______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a><br> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><u></u><u></u></p> </div> <p class="MsoNormal"><u></u> <u></u></p> </div> </div></div></div> </div> <br>_______________________________________________<br> gstreamer-devel mailing list<br> <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a><br> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> <br></blockquote></div><br></div>