# this is a networked pipeline between two machines.
# the first machine grabs video and also does I/O through a serial port.
# the second machine receives the video and displays it.
#
# the first pipeline below reads 3 mjpeg streams from an Axis webcam server
# combine them with 2 test video sources and send the 
# whole to a remote pipeline (defined at the bottom of this paste).
# When this pipeline is started, it generates interrupted system
# calls in a different thread which handles I/O through a serial port.
# Any idea what could be the cause of this ?
# 
# NB : sometimes (5%?) all works perfectly fine.
#
gnomevfssrc location="http://mediupcam.unice.fr/axis-cgi/mjpg/video.cgi?camera=1&resolution=176x144"
! multipartdemux
! image/jpeg,width=176,height=144,framerate=\(fraction\)25/5
! decodebin
! ffmpegcolorspace
! videobox alpha=1 border-alpha=0 fill=0 top=0 left=0 right=-704
! video/x-raw-yuv,width=880,height=144
! queue
! VideoMixer.
gnomevfssrc location="http://mediupcam.unice.fr/axis-cgi/mjpg/video.cgi?camera=2&resolution=176x144"
! multipartdemux
! image/jpeg,width=176,height=144,framerate=\(fraction\)25/5
! decodebin
! ffmpegcolorspace
! videobox alpha=1 border-alpha=0 fill=0 top=0 left=-176 right=-528
! video/x-raw-yuv,width=880,height=144
! queue
! VideoMixer.
gnomevfssrc location="http://mediupcam.unice.fr/axis-cgi/mjpg/video.cgi?camera=3&resolution=176x144"
! multipartdemux
! image/jpeg,width=176,height=144,framerate=\(fraction\)25/5
! decodebin
! ffmpegcolorspace
! videobox alpha=1 border-alpha=0 fill=0 top=0 left=-352 right=-352
! video/x-raw-yuv,width=880,height=144
! queue
! VideoMixer.
videotestsrc pattern=smpte is-live=True
! video/x-raw-yuv,framerate=\(fraction\)25/5,width=176,height=144
! ffmpegcolorspace
! videobox alpha=1 border-alpha=0 fill=0 top=0 left=-528 right=-176
! video/x-raw-yuv,width=880,height=144
! queue
! VideoMixer. 
videotestsrc pattern=smpte is-live=True
! video/x-raw-yuv,framerate=\(fraction\)25/5,width=176,height=144
! ffmpegcolorspace
! videobox alpha=1 border-alpha=0 fill=0 top=0 left=-704 right=0
! video/x-raw-yuv,width=880,height=144
! queue
! VideoMixer. 
videomixer name=VideoMixer
! queue
! ffmpegcolorspace
! video/x-raw-yuv,format=\(fourcc\)YUV9,width=880,height=144,framerate=\(fraction\)25/5
! gdppay
! queue
! tcpclientsink host=192.168.1.1 port=12345 protocol=1
# here ends the pipeline which generates interrupted system calls
# in the thread which handles I/O through the serial port.

# On the other end this pipeline is used :
#
tcpserversrc host=192.168.1.1 port=12345 protocol=1 \
! queue
! gdpdepay
! video/x-raw-yuv,format=(fourcc)YUV9,width=880,height=144,framerate=\(fraction\)25/5
! ffmpegcolorspace
! ximagesink