Rewrite

librespot/audio/decoders.py

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+from __future__ import annotations
+from librespot.proto.Metadata_pb2 import AudioFile
+import enum
+import typing
+
+
+class AudioQuality(enum.Enum):
+    NORMAL = 0x00
+    HIGH = 0x01
+    VERY_HIGH = 0x02
+
+    @staticmethod
+    def get_quality(audio_format: AudioFile.Format) -> AudioQuality:
+        if (audio_format == AudioFile.MP3_96
+                or audio_format == AudioFile.OGG_VORBIS_96
+                or audio_format == AudioFile.AAC_24_NORM):
+            return AudioQuality.NORMAL
+        if (audio_format == AudioFile.MP3_160
+                or audio_format == AudioFile.MP3_160_ENC
+                or audio_format == AudioFile.OGG_VORBIS_160
+                or audio_format == AudioFile.AAC_24):
+            return AudioQuality.HIGH
+        if (audio_format == AudioFile.MP3_320
+                or audio_format == AudioFile.MP3_256
+                or audio_format == AudioFile.OGG_VORBIS_320
+                or audio_format == AudioFile.AAC_48):
+            return AudioQuality.VERY_HIGH
+        raise RuntimeError("Unknown format: {}".format(format))
+
+    def get_matches(self, files: typing.List[AudioFile]) -> typing.List[AudioFile]:
+        file_list = []
+        for file in files:
+            if hasattr(file, "format") and AudioQuality.get_quality(file.format) == self:
+                file_list.append(file)
+        return file_list