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• Bash script having custom functions not running under systemd service

  13 août, par nightcrawler

  I have this script to get images from a webcam & process them via RKNN NPU

  


  #!/bin/bash

# Define the temporary directory for images
TEMP_DIR="/media/32GB/pics"
# Define the resize/letterbox option
RESIZE_OPTION="letterbox"  # or "letterbox" depending on your requirement
# Define the output image path pattern
OUTPUT_IMAGE_PATH="/media/32GB/processed_pics/%Y-%m-%d_%H-%M-%S_processed.jpg"
# Define the path to the rknn_yolov5_demo_Linux binar
BINARY_PATH="$HOME/ezrknn-toolkit2/rknpu2/examples/rknn_yolov5_demo/install/rknn_yolov5_demo_Linux"
# Define ntfy variables
NTFY_URL="https://ntfy.org/ho"
NTFY_USER="xxx"
NTFY_PASS="xxxx"

# Empty existing content
rm "$TEMP_DIR"/*
# Function to run ffmpeg and write images to temporary files
run_ffmpeg() {
    v380 -u xxxx -p xxxx -addr 192.168.1.xxx | ffmpeg -i - -f image2 -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" -y
}

# Function to run rknn_yolov5_demo_Linux and process images from temporary files
run_rknn_yolov5_demo() {
    while true; do
        # Find the most recent image file in the temporary directory
        IMAGE_PATH=$(ls -t "$TEMP_DIR"/*.jpg | head -n 1)

        # Check if the image path is not empty
        if [ -n "$IMAGE_PATH" ]; then
            # Define the output image path
            OUTPUT_IMAGE=$(date +"$OUTPUT_IMAGE_PATH")

            # Change to the binary directory and set LD_LIBRARY_PATH
            DETECTION_OUTPUT=$(cd "$BINARY_PATH" && LD_LIBRARY_PATH=./lib ./rknn_yolov5_demo ./model/RK3566_RK3568/yolov5s-640-640.rknn "$IMAGE_PATH" "$RESIZE_OPTION" "$OUTPUT_IMAGE")

            # Check if the detection output contains the word "person"
            if echo "$DETECTION_OUTPUT" | grep -q "person"; then
                echo "Human detected. Saving processed image to $OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
                # Upload the image using the imgur binary and capture the link
                UPLOAD_OUTPUT=$(imgur "$OUTPUT_IMAGE")
                UPLOAD_LINK=$(echo "$UPLOAD_OUTPUT" | grep -m 1 '^http')

                if [ -n "$UPLOAD_LINK" ]; then
                    echo "Image uploaded successfully. Link: $UPLOAD_LINK"
                    # Send ntfy notification with the image link
                    curl -u $NTFY_USER:$NTFY_PASS -H "tags:rotating_light" -H "Attach:$UPLOAD_LINK" -d "Human detected" $NTFY_URL
                else
                    echo "Failed to upload image."
                fi
            else
                rm "$OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
            fi
        fi

        # Sleep for a short period to avoid high CPU usage
        sleep 1
    done
}


# Run ffmpeg and rknn_yolov5_demo_Linux in the background
run_ffmpeg &
run_rknn_yolov5_demo &


  


  & the corresponding .service file

  


  [Unit]
Description=Process Images with rknn_yolov5_demo
After=network.target
#StartLimitIntervalSec=60
#StartLimitBurst=5

[Service]
Type=simple
ExecStartPre=/bin/sleep 30
ExecStart=/home/xxx/process_images_rknn.sh
Restart=always
RestartSec=3
TimeoutStartSec=60

[Install]
WantedBy=default.target


  


  Now last x2 lines of script are creating problems.

  


  Case1] If I keep like this htop shows no initiation of ffmpeg nor rknn Binaries

  


  Case2] I removed & from both lines then only ffmpeg runs but rknn is nowhere in htop

  


  Case3] Only this case works

  


  run_ffmpeg &
run_rknn_yolov5_demo


  


  I am reloading systemctl daemon & restarting service after script modification in each case

  


• Evolution #4080 : Raccourci puce : se débarasser de l’image

  1er octobre 2018

  Je vote pour le caractère
  https://unicode-table.com/fr/2023/

  Voici un test chez moi en local sur SPIP 3.2, la dist et Firefox Windows (bref 100% vanille)

• Revision 28933 : on bouge

  31 mai 2009, par ben.spip@… — Log

  on bouge