Tuesday, April 12, 2022

[SOLVED] Python vlc check if song is playing

Issue

I have this Python script:

import mysql.connector
import os
import time
import vlc
from subprocess import Popen
from mysql.connector import Error

def program():
    connection = mysql.connector.connect(host='localhost',
                                         database='broadcast',
                                         user='****',
                                         password='****')
    if connection.is_connected():
        db_Info = connection.get_server_info()
        print("Connected to MySQL Server version ", db_Info)
        cursor = connection.cursor()
        cursor.execute("select database();")
        record = cursor.fetchone()
        print("You're connected to database: ", record)
        
    sql_select_Query = "select * from broadcast WHERE datumtijd BETWEEN now() - INTERVAL 1 MINUTE AND now()"
    cursor = connection.cursor()
    cursor.execute(sql_select_Query)
    # get all records
    records = cursor.fetchall()
    print("Total number of rows in table: ", cursor.rowcount)
    print("\n")

    #print("\nPrinting each row")
    for row in records:
        print("\nPrinting each row")
        print("id = ", row[0], )
        print("date_time  = ", row[1])
        print("audiofile  = ", row[2], "\n")
        player = vlc.MediaPlayer('/home/pi/Music/' + row[2])
        player.play()
        
        
runprogram = True
while runprogram:
    program()
    time.sleep(10)

This code check if there is a record in a mysql database and if the time matches it will play that song. No problems so far, but the script is sitting in a while loop of 10 seconds. After 10 seconds the same song is played again, so there are 2 songs playing at that moment. And after another 10 seconds it starts for the 3rd time, etc. ect.

Is there any possibility to change my code, so it doens't start another song if there is a song playing. If yes, what do I need to add/change to make this work.

Gr. Edwin


Solution

Simply hold the player open while it's still playing with a while loop.

e.g.

import time
import vlc

input_files = ['punish.mp3', 'trial.wav', 'punish2.mp3']

def program():
    for row in input_files:
        print("Playing: ", row)
        player = vlc.MediaPlayer('../'+row)
        player.play()
        time.sleep(1) # allow player to start
        while player.is_playing():
            time.sleep(1)        
        
runprogram = True
while runprogram:
    program()
    print("Finished: Looping for more audio")
    time.sleep(10)

Output:

python 20220227.py
Playing:  punish.mp3
Playing:  trial.wav
Playing:  punish2.mp3
Finished: Looping for more audio
Playing:  punish.mp3
Playing:  trial.wav
Playing:  punish2.mp3
Finished: Looping for more audio
Playing:  punish.mp3


Answered By - Rolf of Saxony
Answer Checked By - Senaida (WPSolving Volunteer)
at