integration with pianoteq-pi

[hamishlow]

Thanks so much Robert for this great script, on a local install on a headless setup on a raspberry pi it works perfectly, however only when I launch the script from a VNC environment.

I am having difficulty though getting it the script to run from startup on a headless boot.

I got Pianoteq 8 working on a raspberry pi 4B with the help of pianoteq-pi. Your script is the perfect complement, as while pianoteq-pi got pianoteq working, I could not change settings on pianoteq without going in through a VNC to open the gui and change instrument.

Your script works perfectly if launched from a VNC environment (with the webapp to port 3000 as intended) however on a headless boot the webapp ports to something completely different and I can't figure out why it won't port to 3000.

This is more of a feature request than an issue, and beyond my limited abilities. It would be amazing if pianoteq-pi and ptq-client-webapp worked together perfectly!

I've also posted this suggestion/feature request on https://github.com/youfou/pianoteq-pi/issues/9

Thanks for your consideration!

[robert-rc2i]

Hi,

Thanks for the kind words.

I have not tested the headless setup of the PI in my env. I'll look into it. In the mean time can you post the output of the command serve -s build while in headless mode.

I am assuming that you tried launching it while connected in SSH right, or you have a script that automate the launch in the background?

As for the integration with the other repo, it would actually be a good idea for those interested. This is more an enhancement on the other repo pianoteq-pi. But I wouldn't mind helping in some way. I'll look at that repo and see if I can post a pull request to have it include this project as well.

Thx

Robert

[hamishlow]

Yes, pianoteq-pi gave me a script to launch Pianoteq on a headless startup, I then followed your instructions for Option 2 and added info to the startup script to launch the ptq-webapp:

As I mentioned, I can run the script and it launches the webapp on port 3000 from VNC - which means I can use the webapp from my phone, but on headless startup I get the following error message log, pianoteq runs but the webapp goes to port 42253:

HTTP 02/09/2024 22:44:14 IP ADDRESS GET / HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 200 in 229 ms HTTP 02/09/2024 22:44:14 IP ADDRESS GET /static/css/main.5ecd60fb.chunk.css HTTP 02/09/2024 22:44:14 IP ADDRESS GET /static/js/2.81c38672.chunk.js HTTP 02/09/2024 22:44:14 IP ADDRESS GET /static/js/main.0c2630ce.chunk.js HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 200 in 28 ms HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 304 in 30 ms HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 304 in 27 ms HTTP 02/09/2024 22:44:14 IP ADDRESS GET /assets/midi.png HTTP 02/09/2024 22:44:14 IP ADDRESS GET /assets/metronome-tick.png HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 200 in 14 ms HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 200 in 11 ms HTTP 02/09/2024 22:44:14 IP ADDRESS GET /manifest.json HTTP 02/09/2024 22:44:14 IP ADDRESS Returned 304 in 8 ms 2024-09-02 22:44:26 - Attempting to launch ptq webapp 2024-09-02 22:44:26 - Successfully changed to ptq-client-webapp directory INFO Accepting connections at http://localhost:42253

[hamishlow]

Here's the adapted start.sh script that runs on headless startup...

#!/usr/bin/env bash

set -e  # Exit immediately if a command exits with a non-zero status.

exec_path="/home/pianoteq/Pianoteq 8 STAGE/arm-64bit/Pianoteq 8 STAGE"
base_args="--serve 0.0.0.0:8081 --multicore max --midimapping"

base_cmd=("${exec_path}" ${base_args})

sudo cpufreq-set -r -g performance || echo "Failed to set CPU frequency to performance mode"

if [ "$#" -eq 0 ] ; then
    # open directly
    sudo systemctl stop pianoteq || echo "Failed to stop pianoteq service"
    "${base_cmd[@]}"
    sudo systemctl start pianoteq || echo "Failed to start pianoteq service"
else
    # run from systemctl
    "${base_cmd[@]}" "$@"
fi

# Set up logging
LOG_FILE="/home/pianoteq/ptq_webapp_startup.log"

log_message() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
}

# Source user profile to ensure environment is set correctly
source /home/pianoteq/.bash_profile
source /home/pianoteq/.bashrc

# Launch ptq webapp
log_message "Attempting to launch ptq webapp"

# Change to parent directory
if ! cd ..; then
    log_message "Error: Failed to change to parent directory"
    exit 1
fi

# Change to ptq-client-webapp directory
if ! cd ptq-client-webapp; then
    log_message "Error: Failed to change to /home/pianoteq/ptq-client-webapp directory"
    exit 1
fi

log_message "Successfully changed to ptq-client-webapp directory"

# Check if the port is already in use before starting the server

if sudo lsof -Pi :3000 -sTCP:LISTEN -t >/dev/null ; then
    log_message "Error: Port 3000 is already in use"
    exit 1
fi

sleep 8

# Run npx serve
if ! sudo -u pianoteq npx serve -s build -l > >(tee -a "$LOG_FILE") 2> >(tee -a "$LOG_FILE" >&2); then
    log_message "Error: Failed to run 'sudo npx serve -s build'"
    exit 1
fi

log_message "ptq webapp launched successfully"

[hamishlow]

Actually I think I messed this up somehow and can't replicate... pianoteq launches with this, but in trying to get it to launch ptq-webapp on startup it no longer launches from the VNC either at present.. obviously I don´t really know what I am doing... I'll wait for wiser minds (yours) to find a solution.... much appreciated!

[robert-rc2i]

OK,

An easy test would be to set the port yourself instead of using the default one by npx serve. So instead of the above command pls change it to the following:

sudo -u pianoteq npx serve -s build -l -p 8080 > >(tee -a "$LOG_FILE") 2> >(tee -a "$LOG_FILE" >&2)

Change the port number to what ever is available on a headless setup. Then access the website using the port number you used in the command above.

Let me know how it went.

Robert

[hamishlow]

Hi Robert,

The script now works on a headless Pi setup after having run the build command... here's the script. It launches Pianoteq 8 on startup and the webapp on port 3000 - so I can now use your webapp from my phone. Thanks so much!

`#!/usr/bin/env bash

Set up logging

LOG_FILE="/home/$USERNAME/ptq_webapp_startup.log"

log_message() { echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE" }

log_message "Script started with PID: $$"

Trap to handle script termination and clean up background processes

trap 'kill $(jobs -p)' EXIT

Source user profile to ensure environment is set correctly

log_message "Sourcing user profiles" source /home/$USERNAME/.bash_profile source /home/$USERNAME/.bashrc

Pianoteq handling

log_message "Setting up Pianoteq" exec_path="/home/$USERNAME/Pianoteq 8 STAGE/arm-64bit/Pianoteq 8 STAGE" base_args="--serve 0.0.0.0:8081 --multicore max --midimapping"

base_cmd=("${exec_path}" ${base_args})

log_message "Attempting to set CPU frequency" if ! sudo cpufreq-set -r -g performance; then log_message "Failed to set CPU frequency to performance mode" else log_message "CPU frequency set to performance mode" fi

log_message "Checking script arguments" if [ "$#" -eq 0 ] ; then log_message "No arguments provided, opening directly" if ! sudo systemctl stop pianoteq; then log_message "Failed to stop pianoteq service" else log_message "Pianoteq service stopped" fi log_message "Launching Pianoteq" "${base_cmd[@]}" & log_message "Pianoteq launched in background" if ! sudo systemctl start pianoteq; then log_message "Failed to start pianoteq service" else log_message "Pianoteq service started" fi else log_message "Arguments provided, running from systemctl" "${base_cmd[@]}" "$@" & log_message "Pianoteq launched in background with arguments" fi

Small delay to allow Pianoteq to initialize

sleep 5

Web app launching

log_message "Attempting to launch ptq webapp"

log_message "Changing to ptq-client-webapp directory" if ! cd /home/$USERNAME/ptq-client-webapp; then log_message "Error: Failed to change to /home/$USERNAME/ptq-client-webapp directory" exit 1 fi

log_message "Successfully changed to ptq-client-webapp directory"

log_message "Checking if port 3000 is in use" if sudo lsof -Pi :3000 -sTCP:LISTEN -t >/dev/null ; then log_message "Error: Port 3000 is already in use" exit 1 fi

log_message "Running npx serve" if ! sudo -u $USERNAME npx serve -s build -p 3000 &>> "$LOG_FILE"; then log_message "Error: Failed to run 'sudo -u $USERNAME npx serve -s build -p 3000'" exit 1 fi

log_message "ptq webapp launched successfully" `

I also changed the permissions on the script to make it executable..

[hamishlow]

Something else that would improve the webapp would be the ability to run the reset command, (the command Alt+P from the GUI)... as sometimes it freezes, and it doesn't seem possible to be able to reset from the webapp at present...

[robert-rc2i]

Hi,

Glad to see that you were successful. OK, I'll add that feature in the list of todos.

Thx

[robert-rc2i]

Hi @hamishlow ,

Would you mind pointing to the documentation that mention the "Alt-P" command. I cannot seem to find it on the Mozart's website.

Thx

[hamishlow]

Hi Robert, Here's a little screenshot of the Pianoteq GUI with the note on hover over the reset button. When I'm running Pianoteq on the Pi headless (on a Raspberry Pi 4B, sometimes it is running stably for a long time, sometimes it crashes. At present the only options I have are to restart, or to enter via VNC open the GUI and press that button. Thanks so much for your work on this!