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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2019, Google Inc.
#
# Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
#
# Capture processed frames from cameras based on the Rockchip ISP1
#
# The scripts makes use of the following tools, which are expected to be
# executable from the system-wide path or from the local directory:
#
# - media-ctl (from v4l-utils git://linuxtv.org/v4l-utils.git)
# - raw2rgbpnm (from git://git.retiisi.org.uk/~sailus/raw2rgbpnm.git)
# - yavta (from git://git.ideasonboard.org/yavta.git)
# Return the entity connected to a given pad
# $1: The pad, expressed as "entity":index
mc_remote_entity() {
local entity="${1%:*}"
local pad="${1#*:}"
${mediactl} -p | awk '
/^- entity / {
in_entity=0
}
/^- entity [0-9]+: '"${entity}"' / {
in_entity=1
}
/^[ \t]+pad/ {
in_pad=0
}
/^[ \t]+pad'"${pad}"': / {
in_pad=1
}
/^[ \t]+(<-|->) "[^"]+"/ {
if (in_entity && in_pad) {
print gensub(/^[^"]+"([^"]+)":([0-9]+).*$/, "\\1", "g")
exit
}
}'
}
# Locate the sensor entity
find_sensor() {
local bus
local sensor_name=$1
bus=$(grep "$sensor_name " /sys/class/video4linux/v4l-subdev*/name | cut -d ' ' -f 2)
if [[ -z $bus ]]; then
echo "Sensor '$sensor_name' not found." >&2
exit 1
fi
echo "$sensor_name $bus"
}
# Locate the CSI-2 receiver
find_csi2_rx() {
local sensor_name=$1
local csi2_rx
csi2_rx=$(mc_remote_entity "$sensor_name:0")
if [ "$csi2_rx" != rkisp1_isp ] ; then
echo "$csi2_rx"
fi
}
# Locate the media device
find_media_device() {
local mdev
local name=$1
for mdev in /dev/media* ; do
media-ctl -d $mdev -p | grep -q "^driver[ \t]*$name$" && break
mdev=
done
if [[ -z $mdev ]] ; then
echo "$name media device not found." >&2
exit 1
fi
echo $mdev
}
# Get the sensor format
get_sensor_format() {
local format
local sensor=$1
format=$($mediactl --get-v4l2 "'$sensor':0" | grep 'fmt:' | sed 's/.*\(fmt:\S*\).*/\1/')
sensor_mbus_code=$(echo $format | sed 's/fmt:\([A-Z0-9_]*\).*/\1/')
sensor_size=$(echo $format | sed 's/[^\/]*\/\([0-9x]*\).*/\1/')
echo "Capturing ${sensor_size} from sensor $sensor in ${sensor_mbus_code}"
}
# Configure the pipeline
configure_pipeline() {
local format="fmt:$sensor_mbus_code/$sensor_size"
local capture_mbus_code=$1
local capture_size=$2
local csi2_rx
echo "Configuring pipeline for $sensor in $format"
csi2_rx=$(find_csi2_rx "$sensor")
$mediactl -r
if [ -n "$csi2_rx" ] ; then
$mediactl -l "'$sensor':0 -> '$csi2_rx':0 [1]"
$mediactl -l "'$csi2_rx':1 -> 'rkisp1_isp':0 [1]"
else
$mediactl -l "'$sensor':0 -> 'rkisp1_isp':0 [1]"
fi
$mediactl -l "'rkisp1_isp':2 -> 'rkisp1_resizer_mainpath':0 [1]"
$mediactl -V "\"$sensor\":0 [$format]"
if [ -n "$csi2_rx" ] ; then
$mediactl -V "'$csi2_rx':0 [$format]"
$mediactl -V "'$csi2_rx':1 [$format]"
fi
$mediactl -V "'rkisp1_isp':0 [$format crop:(0,0)/$sensor_size]"
$mediactl -V "'rkisp1_isp':2 [fmt:$capture_mbus_code/$sensor_size crop:(0,0)/$sensor_size]"
$mediactl -V "'rkisp1_resizer_mainpath':0 [fmt:$capture_mbus_code/$sensor_size crop:(0,0)/$sensor_size]"
$mediactl -V "'rkisp1_resizer_mainpath':1 [fmt:$capture_mbus_code/$capture_size]"
}
# Capture frames
capture_frames() {
local file_op
local capture_format=$1
local capture_size=$2
local frame_count=$3
local save_file=$4
if [[ $save_file -eq 1 ]]; then
file_op="--file=/tmp/frame-#.bin"
rm -f /tmp/frame-*.bin
fi
yavta -c$frame_count -n5 -I -f $capture_format -s $capture_size \
$file_op $($mediactl -e "rkisp1_mainpath")
}
# Convert captured files to ppm
convert_files() {
local format=$1
local size=$2
local frame_count=$3
echo "Converting ${frame_count} frames (${size})"
for i in `seq 0 $(($frame_count - 1))`; do
i=$(printf %06u $i)
raw2rgbpnm -f $format -s $size /tmp/frame-$i.bin /tmp/frame-$i.ppm
done
}
# Print usage message
usage() {
echo "Usage: $1 [options] sensor-name"
echo "Supported options:"
echo "-c,--count n Number of frame to capture"
echo "--no-save Do not save captured frames to disk"
echo "-r, --raw Capture RAW frames"
echo "-s, --size wxh Frame size"
}
# Parse command line arguments
capture_size=1024x768
frame_count=10
raw=false
save_file=1
while [[ $# -ne 0 ]] ; do
case $1 in
-c|--count)
frame_count=$2
shift 2
;;
--no-save)
save_file=0
shift
;;
-r|--raw)
raw=true
shift
;;
-s|--size)
capture_size=$2
shift 2
;;
-*)
echo "Unsupported option $1" >&2
usage $0
exit 1
;;
*)
break
;;
esac
done
if [[ $# -ne 1 ]] ; then
usage $0
exit 1
fi
sensor_name=$1
modprobe phy_rockchip_dphy_rx0
modprobe rockchip_isp1
sensor=$(find_sensor $sensor_name) || exit
mdev=$(find_media_device rkisp1) || exit
mediactl="media-ctl -d $mdev"
get_sensor_format "$sensor"
if [[ $raw == true ]] ; then
capture_format=$(echo $sensor_mbus_code | sed 's/_[0-9X]*$//')
capture_mbus_code=$sensor_mbus_code
else
capture_format=YUYV
capture_mbus_code=YUYV8_2X8
fi
configure_pipeline $capture_mbus_code $capture_size
capture_frames $capture_format $capture_size $frame_count $save_file
[[ $save_file -eq 1 ]] && convert_files $capture_format $capture_size $frame_count
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