The VideoLAN Forums

Posted: **24 Feb 2012 18:25**

Hi everyone,

I currently try to program a little audioplayer in python, with the use of the libvlc Python bindings.

The problem is, that I cannot load a media file after the current song ended. While the song is playing I can load a new file and play it without problems.

If you need it, here is the code (I hope it is understandable, I am new to Python and libvlc):

Code: Select all

import os
import string
import time
import vlc
import serial
import io
import struct

arduinoMode = False

class AudioPlayer:
    
    def __init__(self):
        self.instance = vlc.Instance()
        self.mediaplayer = self.instance.media_player_new()
        self.event_manager = self.mediaplayer.event_manager()
        self.event_manager.event_attach(vlc.EventType.MediaPlayerEndReached, self.trackEnded)
        self.titleNum = 0
        self.playlist = []
        
    def playlistFromDir(self, rootDir):
        for root, subFolders, files in os.walk(rootDir):
            for file in files:
                self.playlist.append(os.path.join(root,file))
   

    def loadTrack(self, path):
        return self.instance.media_new(path)   
        print("track loaded")
        
    def playTrack(self, track):
        self.mediaplayer.set_media(track)
        print("PLAYING TRACK")
        self.mediaplayer.play()
        
    def playCurrTrack(self):
        print("trying to load new track...")
        track = self.loadTrack(self.playlist[self.titleNum])
        print("trying to play track...")
        self.playTrack(track)

        
    def trackEnded(self, event):
        print("Track ended")
        self.nextTrack()

             
    def prevTrack(self):
        self.setTitle(self.getTitle()-1)     
        self.playCurrTrack()
        
    def nextTrack(self):
        self.setTitle(self.getTitle()+1)     
        self.playCurrTrack()
     
    def getTitle(self):
        return self.titleNum
    
    def setTitle(self, number):
        self.titleNum = number
        if self.titleNum < 0:
            self.titleNum = len(self.playlist) + self.titleNum
        elif self.titleNum >= len(self.playlist):
            self.titleNum = len(self.playlist) - self.titleNum
        print("track %i of %i: %s" % (self.titleNum+1, len(self.playlist), self.playlist[self.titleNum]))
        
    def getVolume(self):
        return self.mediaplayer.audio_get_volume()
        
    def setVolume(self, vol):
        if vol < 0:
            vol = 0
        elif vol > 100:
            vol = 100
        self.mediaplayer.audio_set_volume(vol)
        print("Volume: %i" %(self.mediaplayer.audio_get_volume()))
 
if arduinoMode == True:      
    ser = serial.Serial("/dev/ttyACM0", 9600)
    
    connection = False;
    while not connection:
        input = ser.readline()
        print(input)
        if input != None:
            connection = True
        #time.sleep(0.05)
    

player = AudioPlayer()

player.playlistFromDir("/home/jonas/Musik/test")
player.playCurrTrack()

quit = False

while not quit:
    
    key = raw_input()
    
    if key == "q":
        quit = True 
    if key == "y":
        player.prevTrack()
    if key == "x":
        player.nextTrack()
    if key == "-":
        player.setVolume( player.getVolume()-5 )
    if key == "+":
        player.setVolume( player.getVolume()+5 )    
    if key == "t":
        print(player.mediaplayer.get_time())
    
    
    if arduinoMode == True:
        msg = ser.read(1);
        print(msg)
        player.setVolume(msg)
        time.sleep(1)

(The code is actually meaned to be used with an arduino, which prints a few sensor readings, you can ignore that)

There must be a problem in the eof callback (AudioPlayer.trackEnded())...

I hope you can help me

kind regards

The VideoLAN Forums

VLC Python Bindings: Unable to load another file after EOF

VLC Python Bindings: Unable to load another file after EOF