#coding=utf-8

import sys,os ,shutil

import struct

import glob

import time

import subprocess

def slow(file_name,to_file):

    command='ffmpeg -i {} -af atempo=0.85 {} '.format(file_name,to_file)

    print(command)

    os.system(command)

def process_file(file_name,dest_node):

    if not file_name.endswith('.mp3'):

        return;

    slow(file_name,dest_node)

def process_dir(folder):

    for sub_node in glob.glob ( folder+'/*' ):

        dest_node=sub_node.replace(node,"../processed/")

        if os.path.isdir(sub_node):

            if not os.path.isdir(dest_node):

                os.mkdir(dest_node)

            process_dir(sub_node)

        else:

            process_file(sub_node,dest_node)

node=sys.argv[1]

if os.path.isdir(node):

    process_dir(node)

    for pcm_file in glob.glob ( node+'/*' ):

        process_file(pcm_file)

if os.path.isfile(node):

    with open(node, 'r') as file_to_read:

        for line in file_to_read.readlines():

            process_file(line)