refactor: python implementation of audioop.mul

CHANGELOG.md

@@ -52,6 +52,9 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#2496](https://github.com/Pycord-Development/pycord/pull/2496))
 - ⚠️ **Removed support for Python 3.8.**
   ([#2521](https://github.com/Pycord-Development/pycord/pull/2521))
+- Replaced audioop (deprecated module) implementation of `PCMVolumeTransformer.read`
+  method with a pure Python equivalent.
+  ([#2176](https://github.com/Pycord-Development/pycord/pull/2176))
 
 ### Deprecated
 

discord/player.py

@@ -25,8 +25,8 @@
 
 from __future__ import annotations
 
+import array
 import asyncio
-import audioop
 import io
 import json
 import logging
@@ -37,6 +37,7 @@
 import threading
 import time
 import traceback
+from math import floor
 from typing import IO, TYPE_CHECKING, Any, Callable, Generic, TypeVar
 
 from .errors import ClientException
@@ -704,8 +705,17 @@ def cleanup(self) -> None:
         self.original.cleanup()
 
     def read(self) -> bytes:
+        maxval = 0x7FFF
+        minval = -0x8000
+
+        volume = min(self._volume, 2.0)
         ret = self.original.read()
-        return audioop.mul(ret, 2, min(self._volume, 2.0))
+        samples = array.array("h")
+        samples.frombytes(ret)
+        for i in range(len(samples)):
+            samples[i] = int(floor(min(maxval, max(samples[i] * volume, minval))))
+
+        return samples.tobytes()
 
 
 class AudioPlayer(threading.Thread):