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