helpers/music_file.py

   1 import threading
   2 import pydub
   3 import pygame
   4
   5 class MusicFile:
   6     def __init__(self, filename, lock, channel_id, name = None):
   7         self.filename = filename
   8         self.channel_id = channel_id
   9         self.name = name or filename
  10         self.raw_data = None
  11         self.sound = None
  12
  13         self.loaded = False
  14         self.flag_paused = False
  15         threading.Thread(name = "MSMusicLoad", target = self.load_sound, args = [lock]).start()
  16
  17     def load_sound(self, lock):
  18         lock.acquire()
  19         print("Loading « {} »".format(self.name))
  20         self.raw_data = pydub.AudioSegment.from_file(self.filename).raw_data
  21         self.sound = pygame.mixer.Sound(self.raw_data)
  22         print("Loaded « {} »".format(self.name))
  23         self.loaded = True
  24         lock.release()
  25
  26     def is_playing(self):
  27         return self.channel().get_busy()
  28
  29     def is_paused(self):
  30         return self.flag_paused
  31
  32     def play(self, fade_in = 0, volume = 100, start_at = 0):
  33         self.channel().set_endevent()
  34         self.channel().set_endevent(pygame.USEREVENT)
  35         self.set_volume(volume)
  36
  37         if start_at > 0:
  38             song_duration = self.sound.get_length()
  39             raw_data_length = len(self.raw_data)
  40             start_offset = int((raw_data_length / song_duration) * start_at)
  41             start_offset = start_offset - (start_offset % 2)
  42             self.sound = pygame.mixer.Sound(self.raw_data[start_offset:])
  43         else:
  44             self.sound = pygame.mixer.Sound(self.raw_data)
  45
  46         self.channel().play(self.sound, fade_ms = fade_in * 1000)
  47         self.flag_paused = False
  48
  49     def pause(self):
  50         self.channel().pause()
  51         self.flag_paused = True
  52
  53     def unpause(self):
  54         self.channel().unpause()
  55         self.flag_paused = False
  56
  57     def stop(self, fade_out = 0):
  58         if fade_out > 0:
  59             self.channel().fadeout(fade_out * 1000)
  60         else:
  61             self.channel().stop()
  62
  63     def set_volume(self, value):
  64         if value < 0:
  65             value = 0
  66         if value > 100:
  67             value = 100
  68         self.sound.set_volume(value / 100)
  69
  70     def wait_end(self):
  71         pass
  72
  73     def channel(self):
  74         return pygame.mixer.Channel(self.channel_id)