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import subprocess
from threading import Thread
from queue import Queue
from typing import Iterator

class AudioStreamProcessor:
    def __init__(self):
        self.queue = Queue()
        self.thread = Thread(target=self._process_audio_streams)
        self.thread.start()

    def add_audio_stream(self, audio_stream: Iterator[bytes]):
        self.queue.put(audio_stream)

    def _process_audio_streams(self):
        while True:
            audio_stream = self.queue.get()
            if audio_stream is None:  # We'll use None as a sentinel to mark the end
                break
            self._stream(audio_stream)

    def _stream(self, audio_stream: Iterator[bytes]):
        mpv_command = ["mpv", "--no-cache", "--no-terminal", "--", "fd://0"]
        mpv_process = subprocess.Popen(
            mpv_command,
            stdin=subprocess.PIPE,
            stdout=subprocess.DEVNULL,
            stderr=subprocess.DEVNULL,
        )

        for chunk in audio_stream:
            if chunk is not None:
                mpv_process.stdin.write(chunk)
                mpv_process.stdin.flush()

        if mpv_process.stdin:
            mpv_process.stdin.close()
        mpv_process.wait()

    def close(self):
        self.queue.put(None)  # Signal the processing thread to terminate
        self.thread.join()