Changes between Version 1 and Version 2 of Yocto/gstreamer/compositing


Ignore:
Timestamp:
06/27/2018 10:15:04 PM (7 years ago)
Author:
Cale Collins
Comment:

added Compositing with limited CPU, low memory bandwidth section

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  • Yocto/gstreamer/compositing

    v1 v2  
    3535    imxv4l2videosrc device=/dev/video9 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=1470 window-y-coord=540
    3636}}}
     37
     38
    3739
    3840
    … …  
    159161gst-launch-1.0 --gst-debug=3 rtspsrc location=rtsp://172.24.10.210:9099/stream latency=100 ! queue2 ! decodebin ! autovideosink
    160162}}}
    161 
     163=== Compositing with limited CPU, low memory bandwidth
     164
     165Board performance can be measured with:
     166{{{
     167/unit_tests/mmdc2
     168}}}
     169This is included in our Yocto pre-built image.
     170
     171Boards with less processing power or lower memory bandwidth may only function using lower FPS:
     172{{{#!bash
     173gst-launch-1.0 \
     174    imxv4l2videosrc device=/dev/video2 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=0 window-y-coord=0 \
     175    imxv4l2videosrc device=/dev/video3 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=490 window-y-coord=0 \
     176    imxv4l2videosrc device=/dev/video4 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=980 window-y-coord=0 \
     177    imxv4l2videosrc device=/dev/video5 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=1470 window-y-coord=0 \
     178    imxv4l2videosrc device=/dev/video6 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=0 window-y-coord=540 \
     179    imxv4l2videosrc device=/dev/video7 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=490 window-y-coord=540 \
     180    imxv4l2videosrc device=/dev/video8 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=980 window-y-coord=540 \
     181    imxv4l2videosrc device=/dev/video1 fps-n=15 ! imxg2dvideosink window-width=490 window-height=490 window-x-coord=1470 window-y-coord=540
     182}}}
     183
     184You may also reduce bus load by reducing the output resolution:
     185{{{#!bash
     186     gst-launch-1.0 -e -vv \
     187       imxg2dcompositor name=comp \
     188         sink_1::xpos=0   sink_1::ypos=0 \
     189         sink_2::xpos=490 sink_2::ypos=0 \
     190         sink_3::xpos=980 sink_3::ypos=0 \
     191         sink_4::xpos=1470   sink_4::ypos=0 \
     192         sink_5::xpos=0 sink_5::ypos=540 \
     193         sink_6::xpos=490 sink_6::ypos=540 \
     194         sink_7::xpos=980   sink_7::ypos=540 \
     195         sink_8::xpos=1470 sink_8::ypos=540 ! \
     196       queue2 ! video/x-raw, width=1940, height=1080 ! imxipuvideotransform ! imxipuvideosink \
     197       imxv4l2videosrc device=/dev/video1 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_1 \
     198       imxv4l2videosrc device=/dev/video2 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_2 \
     199       imxv4l2videosrc device=/dev/video3 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_3 \
     200       imxv4l2videosrc device=/dev/video4 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_4 \
     201       imxv4l2videosrc device=/dev/video5 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_5 \
     202       imxv4l2videosrc device=/dev/video6 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_6 \
     203       imxv4l2videosrc device=/dev/video7 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_7 \
     204       imxv4l2videosrc device=/dev/video8 fps-n=12 ! queue2 ! imxipuvideotransform qos=false ! video/x-raw, width=340, height=240 ! comp.sink_8
     205}}}
     206These command strings were verified using GW5100 and Yocto 2.3.
    162207
    163208=== Compositor Software Accelerated - Not recommended ===