Split conversion code

spotdl.py

@@ -3,6 +3,7 @@
 # -*- coding: UTF-8 -*-
 
 from core import metadata
+from core import convert
 from core import misc
 from bs4 import BeautifulSoup
 from titlecase import titlecase
@@ -11,7 +12,6 @@ import spotipy
 import pafy
 import sys
 import os
-import subprocess
 
 # urllib2 is urllib.request in python3
 try:
@@ -33,8 +33,10 @@ def generate_metadata(raw_song):
         meta_tags = spotify.track(raw_song)
     else:
         # otherwise search on spotify and fetch information from first result
-        meta_tags = spotify.search(raw_song, limit=1)['tracks']['items'][0]
-
+        try:
+            meta_tags = spotify.search(raw_song, limit=1)['tracks']['items'][0]
+        except:
+            return None
     artist = spotify.artist(meta_tags['artists'][0]['id'])
     album = spotify.album(meta_tags['album']['id'])
 
@@ -157,75 +159,6 @@ def download_song(content):
         link.download(filepath='Music/' + music_file + args.input_ext)
         return True
 
-# convert song from input_ext to output_ext
-def convert_song(music_file):
-    # skip conversion if input_ext == output_ext
-    if not args.input_ext == args.output_ext:
-        music_file = music_file.encode('utf-8')
-        print('Converting ' + music_file + args.input_ext + ' to ' + args.output_ext[1:])
-        if args.avconv:
-            convert_with_avconv(music_file)
-        else:
-            convert_with_FFmpeg(music_file)
-        os.remove('Music/' + music_file + args.input_ext)
-
-def convert_with_avconv(music_file):
-    # different path for windows
-    if os.name == 'nt':
-        avconv_path = 'Scripts\\avconv.exe'
-    else:
-        avconv_path = 'avconv'
-
-    if args.verbose:
-        level = 'debug'
-    else:
-        level = '0'
-
-    command = [avconv_path,
-               '-loglevel', level,
-               '-i',        'Music/' + music_file + args.input_ext,
-               '-ab',       '192k',
-               'Music/' + music_file + args.output_ext]
-
-    subprocess.call(command)
-
-
-def convert_with_FFmpeg(music_file):
-    # What are the differences and similarities between ffmpeg, libav, and avconv?
-    # https://stackoverflow.com/questions/9477115
-    # ffmeg encoders high to lower quality
-    # libopus > libvorbis >= libfdk_aac > aac > libmp3lame
-    # libfdk_aac due to copyrights needs to be compiled by end user
-    # on MacOS brew install ffmpeg --with-fdk-aac will do just that. Other OS?
-    # https://trac.ffmpeg.org/wiki/Encode/AAC
-
-    if os.name == "nt":
-        ffmpeg_pre = 'Scripts\\ffmpeg.exe '
-    else:
-        ffmpeg_pre = 'ffmpeg '
-
-    ffmpeg_pre += '-y '
-    if not args.verbose:
-        ffmpeg_pre += '-hide_banner -nostats -v panic '
-
-    if args.input_ext == '.m4a':
-        if args.output_ext == '.mp3':
-            ffmpeg_params = '-codec:v copy -codec:a libmp3lame -q:a 2 '
-        elif output_ext == '.webm':
-            ffmpeg_params = '-c:a libopus -vbr on -b:a 192k -vn '
-    elif args.input_ext == '.webm':
-        if args.output_ext == '.mp3':
-            ffmpeg_params = ' -ab 192k -ar 44100 -vn '
-        elif args.output_ext == '.m4a':
-	            ffmpeg_params = '-cutoff 20000 -c:a libfdk_aac -b:a 192k -vn '
-
-    command = (ffmpeg_pre +
-              '-i Music/' + music_file + args.input_ext + ' ' +
-               ffmpeg_params +
-              'Music/' + music_file + args.output_ext + '').split(' ')
-
-    subprocess.call(command)
-
 # check if input song already exists in Music folder
 def check_exists(music_file, raw_song, islist):
     files = os.listdir("Music")
@@ -314,19 +247,23 @@ def grab_single(raw_song, number=None):
     if not check_exists(music_file, raw_song, islist=islist):
         if download_song(content):
             print('')
-            convert_song(music_file)
+            input_song = music_file + args.input_ext
+            output_song = music_file + args.output_ext
+            convert.song(input_song,
+                         output_song,
+                         avconv=args.avconv,
+                         verbose=args.verbose)
             meta_tags = generate_metadata(raw_song)
             if not args.no_metadata:
-                output = music_file + args.output_ext
-                metadata.embed(output, meta_tags)
+                metadata.embed(output_song, meta_tags)
         else:
             print('No audio streams available')
 
 if __name__ == '__main__':
 
     os.chdir(sys.path[0])
-    if not os.path.exists("Music"):
-        os.makedirs("Music")
+
+    misc.filter_path('Music')
 
     # token is mandatory when using Spotify's API
     # https://developer.spotify.com/news-stories/2017/01/27/removing-unauthenticated-calls-to-the-web-api/