Control LedFX using midi controller

ledfxmidi.py

import os
import time
import json
import requests
import rtmidi

# pip install python-rtmidi
midi = rtmidi.MidiIn()

ports = midi.get_ports()
for idx, port in enumerate(ports):
    print(f'[{idx: 4d}]     {port}')

try:
    selected = int(input('Select midi input: '))
except EOFError:
    selected = 1

midi.open_port(selected)

url_base = 'http://localhost:8888'

key0 = 44
scenes = requests.get(f'{url_base}/api/scenes').json()

assert scenes['status'] == 'success'

scene_ids = []

active = None

for scene_id, scene in scenes['scenes'].items():
    scene_ids.append(scene_id)

def reset():
    os.system('clear')
    print('Midi input:', ports[selected])
    for idx, (scene_id, scene) in enumerate(scenes['scenes'].items()):
        print(f'[{44 + idx: 4d}] {scene["name"]} {"*" if active == scene_id else ""}')

def handle(m):
    global active
    if m[0] != 144:
        return
    key = m[1]
    idx = key - 44
    if idx < 0 or idx >= len(scene_ids):
        reset()
        print(f'only key 44 until {44 + len(scene_ids)} is supported')
        print(f'this is key {key}')
        return
    scene_id = scene_ids[idx]
    data = json.dumps(dict(id=scene_id, action='activate'))
    res = requests.put(f'{url_base}/api/scenes', data)
    reset()
    print(res.text)
    if 'success' in res.text:
        active = scene_id


reset()
with midi:
    while True:
        time.sleep(0.1)
        while True:
            m = midi.get_message()
            if m is None:
                break
            handle(m[0])