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DEMO: CAMERA: adapt to several dcmipp camera topology

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Auto-detection of media device to use for camera handling.
Auto-detection of bridge and interface subdevices
to configure by checking media device topology.
Change the way subdev are configured for better handling
of various topologies.
Ensure that GStreamer pixel format used in output of
v4l2src (RGB16 here) fit exactly the media bus format
used on subdevices side (RGB565_2X8_LE here). Nevertheless,
in case of USB camera, keep GStreamer pixel format
auto-negotiated between v4l2src and waylandsink.

Signed-off-by: Hugues Fruchet <hugues.fruchet@foss.st.com>
Change-Id: I49c4200d8edb3b4556f5dd348ce78651926d0cc5
This commit is contained in:
Hugues Fruchet
2022-09-22 17:07:59 +02:00
committed by bernard PUEL
parent 151061fb64
commit 3d51badd5c
1 changed files with 21 additions and 6 deletions
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27
recipes-samples/demo-application/demo-application-camera/launch_camera_preview.sh
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@ -22,12 +22,26 @@ is_dcmipp_present() {
for video in $(find /sys/class/video4linux -name "video*" -type l);
do
if [ "$(cat $video/name)" = "dcmipp_dump_capture" ]; then
cd $video/device/
mediadev=/dev/$(ls -d media*)
cd -
for sub in $(find /sys/class/video4linux -name "v4l-subdev*" -type l);
do
subdev_name=$(tr -d '\0' < $sub/name | awk '{print $1}')
if [ "$subdev_name" = "gc2145" ] || [ "$subdev_name" = "ov5640" ]; then
DCMIPP_SENSOR=$subdev_name
V4L_DEVICE="device=/dev/$(basename $video)"
sensorsubdev=$(tr -d '\0' < $sub/name)
#bridge is connected to output of sensor (":0 [ENABLED" with media-ctl -p)
bridgesubdev=$(media-ctl -d $mediadev -p -e "$sensorsubdev" | grep ":0 \[ENABLED" | awk -F\" '{print $2}')
#interface is connected to input of postproc (":1 [ENABLED" with media-ctl -p)
interfacesubdev=$(media-ctl -d $mediadev -p -e "dcmipp_dump_postproc" | grep ":1 \[ENABLED" | awk -F\" '{print $2}')
echo "media device: "$mediadev
echo "video device: "$V4L_DEVICE
echo "sensor subdev: " $sensorsubdev
echo "bridge subdev: " $bridgesubdev
echo "interface subdev: " $interfacesubdev
return
fi
done
@ -75,15 +89,16 @@ if [ "$DCMIPP_SENSOR" != "NOTFOUND" ]; then
elif [ "$DCMIPP_SENSOR" = "ov5640" ]; then
sensorbuscode="RGB565_2X8_LE"
fi
media-ctl -d /dev/media0 --set-v4l2 "'$DCMIPP_SENSOR 1-003c':0[fmt:$sensorbuscode/${WIDTH}x${HEIGHT}@1/${FPS} field:none]"
media-ctl -d /dev/media0 --set-v4l2 "'dcmipp_parallel':0[fmt:$sensorbuscode/${WIDTH}x${HEIGHT}]"
media-ctl -d /dev/media0 --set-v4l2 "'dcmipp_parallel':1[fmt:RGB565_2X8_LE/${WIDTH}x${HEIGHT}]"
media-ctl -d /dev/media0 --set-v4l2 "'dcmipp_dump_postproc':1[fmt:RGB565_2X8_LE/${WIDTH}x${HEIGHT}]" -v
media-ctl -d /dev/media0 --set-v4l2 "'dcmipp_dump_postproc':1[crop:(0,0)/${WIDTH}x${HEIGHT}]" -v
media-ctl -d $mediadev --set-v4l2 "'$sensorsubdev':0[fmt:$sensorbuscode/${WIDTH}x${HEIGHT}@1/${FPS} field:none]"
media-ctl -d $mediadev --set-v4l2 "'$bridgesubdev':2[fmt:$sensorbuscode/${WIDTH}x${HEIGHT}]"
media-ctl -d $mediadev --set-v4l2 "'$interfacesubdev':1[fmt:RGB565_2X8_LE/${WIDTH}x${HEIGHT}]"
media-ctl -d $mediadev --set-v4l2 "'dcmipp_dump_postproc':1[fmt:RGB565_2X8_LE/${WIDTH}x${HEIGHT}]"
V4L2_CAPS="video/x-raw, format=RGB16, width=$WIDTH, height=$HEIGHT"
V4L_OPT=""
else
get_webcam_device
# suppose we have a webcam
V4L2_CAPS="video/x-raw, width=$WIDTH, height=$HEIGHT"
V4L_OPT="io-mode=4"
v4l2-ctl --set-parm=20
fi
@ -93,7 +108,7 @@ SCREEN_WIDTH=$(weston-info | grep logical_width | sed -r "s/logical_width: ([0-9
SCREEN_HEIGHT=$(weston-info | grep logical_width | sed -r "s/.*logical_height: ([0-9]+).*/\1/")
echo "Gstreamer graph:"
GRAPH="v4l2src $V4L_DEVICE $V4L_OPT ! video/x-raw,width=$WIDTH,height=$HEIGHT ! queue ! $ADDONS waylandsink fullscreen=true"
GRAPH="v4l2src $V4L_DEVICE $V4L_OPT ! $V4L2_CAPS ! queue ! $ADDONS waylandsink fullscreen=true"
echo " $GRAPH"
pty_exec "$GRAPH"