'''
               AAA               lllllll lllllll   iiii                      
              A:::A              l:::::l l:::::l  i::::i                     
             A:::::A             l:::::l l:::::l   iiii                      
            A:::::::A            l:::::l l:::::l                             
           A:::::::::A            l::::l  l::::l iiiiiii     eeeeeeeeeeee    
          A:::::A:::::A           l::::l  l::::l i:::::i   ee::::::::::::ee  
         A:::::A A:::::A          l::::l  l::::l  i::::i  e::::::eeeee:::::ee
        A:::::A   A:::::A         l::::l  l::::l  i::::i e::::::e     e:::::e
       A:::::A     A:::::A        l::::l  l::::l  i::::i e:::::::eeeee::::::e
      A:::::AAAAAAAAA:::::A       l::::l  l::::l  i::::i e:::::::::::::::::e 
     A:::::::::::::::::::::A      l::::l  l::::l  i::::i e::::::eeeeeeeeeee  
    A:::::AAAAAAAAAAAAA:::::A     l::::l  l::::l  i::::i e:::::::e           
   A:::::A             A:::::A   l::::::ll::::::li::::::ie::::::::e          
  A:::::A               A:::::A  l::::::ll::::::li::::::i e::::::::eeeeeeee  
 A:::::A                 A:::::A l::::::ll::::::li::::::i  ee:::::::::::::e  
AAAAAAA                   AAAAAAAlllllllllllllllliiiiiiii    eeeeeeeeeeeeee  


/  __ \ |                (_)              / _ \ | ___ \_   _|  _ 
| /  \/ | ___  __ _ _ __  _ _ __   __ _  / /_\ \| |_/ / | |   (_)
| |   | |/ _ \/ _` | '_ \| | '_ \ / _` | |  _  ||  __/  | |      
| \__/\ |  __/ (_| | | | | | | | | (_| | | | | || |    _| |_   _ 
 \____/_|\___|\__,_|_| |_|_|_| |_|\__, | \_| |_/\_|    \___/  (_)
                                   __/ |                         
                                  |___/                          
  ___            _ _       
 / _ \          | (_)      
/ /_\ \_   _  __| |_  ___  
|  _  | | | |/ _` | |/ _ \ 
| | | | |_| | (_| | | (_) |
\_| |_/\__,_|\__,_|_|\___/ 
                                         

This cleaning script normalizes the volume using peak normalization and ffmpeg-normalize
for all audio files in a folder. Note this method could be bad in high-noise environment,
as noise will be amplified if the noise has high volume.

This cleaning script is enabled if default_audio_cleaners=['clean_normalizevolume'] 
'''
import sys, os, ffmpeg_normalize, uuid

def clean_normalizevolume(audiofile):
        # using peak normalization method 
        file=str(uuid.uuid4())+'.wav'
        os.system('ffmpeg-normalize %s -nt peak -t 0 -o %s'%(audiofile,file))
        os.remove(audiofile)
        os.rename(file, audiofile)
        return [audiofile]