<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">Le 20 déc. 2017 7:31 AM, "Jimmy De Pauw" <<a href="mailto:jimmy@dcode.eu">jimmy@dcode.eu</a>> a écrit :<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>I am almost certain that BaseTransform ignore QoS because it does not have any segment timing to work with.</div><div>Therefore i wonder if it is possible to have QoS when the main sink is filesrc with a test file.</div><div><br></div><div>Considering the following pipeline :</div><div><br></div><div>filesrc ! decodebin ! queue ! videoconvert ! <my plugin> ! jpegenc ! multifilesink</div><div><br></div><div>In the debug log i have only one « <span style="background-color:rgba(0,0,0,0.85098)"><font color="#f4f4f4" face="Monaco" size="1">gst_base_transform_chain ... </font></span><span style="color:rgb(244,244,244);font-family:Monaco;font-size:10px;background-color:rgba(0,0,0,0.85098)">we have a pending DISCONT</span><span style="color:rgb(244,244,244);font-family:Monaco;font-size:x-small;background-color:rgba(0,0,0,0.85098)">» </span> but never twice.</div><div>I also never have a buffer dropped, looking at the code of GstBaseTransform i think this is because i don’t receive and segment information.</div><div><br></div><div>Is it possible to simulate a live feed from a video file with full QoS support so i can test my processing speed?</div></div></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">As soon as you have time segment and timestamp (e.g. after demuxer/parsing/decoding) you can add identity sync=1 to simulate a live feed.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><br><div><blockquote type="cite"><div class="quoted-text"><div>On 18 Dec 2017, at 15:24, Nicolas Dufresne <<a href="mailto:nicolas@ndufresne.ca" target="_blank">nicolas@ndufresne.ca</a>> wrote:</div><br class="m_9068865779230125564Apple-interchange-newline"></div><div class="elided-text"><div><div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">Le 18 déc. 2017 5:10 AM, "Jimmy De Pauw" <<a href="mailto:jimmy@dcode.eu" target="_blank">jimmy@dcode.eu</a>> a écrit :<br type="attribution"><blockquote class="m_9068865779230125564quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I have been creating my own plugin using GstBaseTransform as the parent class.<br>
It works find but now i want to handle the QoS in my tranform method to know if i have to drop the buffer or not.<br>
<br>
I can see that BaseTransform already listen to QoS event on its sink and set some properties in its priv structure.<br>
I would like to have access to the earliest_time property from my own transform method but i don’t know how to do it, if it is possible at all.<br>
It sounds like i have no access to it at all.<br>
<br>
Looking at the videoconvert source code i don’t see how it handles QoS eventl.<br></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">It's entirely handled by the base class. But you can catch the event on your srcpad, there is virtual functions for that.</div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="m_9068865779230125564quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
What is the proper way of using what is already there in the BaseTransform class to handle QoS on my own subclass?<br>
<br>
Thanks<br>
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