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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi,<o:p></o:p></span></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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><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>Kiran Kumar<br>
<b>Gesendet:</b> Montag, 13. Juni 2016 21:20<br>
<b>An:</b> gstreamer-devel@lists.freedesktop.org<br>
<b>Betreff:</b> Grabbing frames from GStreamer pipeline<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#666666">Hi,</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<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><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<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><o:p></o:p></p>
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