BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Building a Ringbuffer - Going in circles with V4L2 and PipeWire
DTSTART;VALUE=DATE-TIME:20261011T102000Z
DTEND;VALUE=DATE-TIME:20261011T105000Z
DTSTAMP;VALUE=DATE-TIME:20261009T233331Z
UID:indico-contribution-609@indico.freedesktop.org
DESCRIPTION:Speakers: Simon Himmelbauer ()\nWe implemented a ringbuffer el
 ement to keep hundreds of video frames in a GStreamer pipeline and only em
 it buffers to the sink when requested. While its implementation was straig
 htforward\, we found out that other components\, such as Video4Linux2 and 
 PipeWire\, are not primarily designed for keeping large amount of frames i
 n memory for extended periods.\nSpecifically\, we extended PipeWire to tra
 ck buffer ownership across clients in order to improve how  buffers are qu
 eued back to the V4L2 driver.\n\nThis presentation details our journey and
  lessons learned and will cover the following topics:\n\n - Implementation
  of a ringbuffer element in GStreamer\n - Impact on buffer management of G
 stV4l2BufferPool\n - Ensuring zero-copy across the entire Gstreamer pipeli
 ne\n - Challenges of using ringbuffer in combination with PipeWire and V4L
 2\n - Buffer tracking in PipeWire\n\nhttps://indico.freedesktop.org/event/
 14/contributions/609/
LOCATION:Impact Hub Prague
URL:https://indico.freedesktop.org/event/14/contributions/609/
END:VEVENT
END:VCALENDAR