added convertion of the audio itself vie ffmpeg

src/music_kraken/utils/shared.py

@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Set
 import logging
 import tempfile
 import os
@@ -94,6 +94,28 @@ proxies = {
     'https': 'socks5h://127.0.0.1:9150'
 } if TOR else {}
 
+
+# Only the formats with id3 metadata can be used
+# https://www.audioranger.com/audio-formats.php
+# https://web.archive.org/web/20230322234434/https://www.audioranger.com/audio-formats.php
+ALLOWED_FILE_FORMATS: Set[str] = {
+    "mp3", "mp2", "mp1",    # MPEG-1                ID3.2
+    "wav", "wave", "rmi",   # RIFF (including WAV)  ID3.2
+    "aiff", "aif", "aifc",  # AIFF                  ID3.2
+    "aac", "aacp",          # Raw AAC	            ID3.2
+    "tta",                  # True Audio            ID3.2
+    "ape",                  # Monkey's Audio        ID3.1
+    "mpc", "mpp", "mp+",    # MusePack              ID3.1
+    "wv",                   # WavPack               ID3.1
+    "ofr", "ofs"            # OptimFrog             ID3.1
+}
+
+# kB per second
+BITRATE = 125
+AUDIO_FORMAT = "mp3"
+if AUDIO_FORMAT not in ALLOWED_FILE_FORMATS:
+    raise ValueError(f"The Audio Format is not in {ALLOWED_FILE_FORMATS} ({AUDIO_FORMAT}).")
+
 """
 available variables:
 - genre
@@ -104,17 +126,17 @@ available variables:
 - album_type
 """
 DOWNLOAD_PATH = "{genre}/{artist}/{album_type}/{album}"
-DOWNLOAD_FILE = "{song}.mp3"
+DOWNLOAD_FILE = "{song}.{audio_format}"
 DEFAULT_VALUES = {
     "genre": "Various Genre",
     "label": "Various Labels",
     "artist": "Various Artists",
     "album": "Various Album",
     "song": "Various Song",
-    "album_type": "Other"
+    "album_type": "Other",
+    "audio_format": AUDIO_FORMAT
 }
-# kB per second
-BITRATE = 100
+
 
 # size of the chunks that are streamed
 CHUNK_SIZE = 1024