import sys
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import wave
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import json
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import base64
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if __name__ == "__main__":
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wav_path = sys.argv[1]
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chunk_size = [int(x) for x in sys.argv[2].split(",")]
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chunk_interval = int(sys.argv[3])
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with wave.open(wav_path, "rb") as wav_file:
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params = wav_file.getparams()
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sample_rate = wav_file.getframerate()
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frames = wav_file.readframes(wav_file.getnframes())
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audio_bytes = bytes(frames)
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stride = int(60 * chunk_size[1] / chunk_interval / 1000 * sample_rate * 2)
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chunk_num = (len(audio_bytes) - 1) // stride + 1
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result = {
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"sample_rate": sample_rate,
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"stride": stride,
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"chunk_num": chunk_num,
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"audio_bytes": base64.b64encode(audio_bytes).decode('utf-8')
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}
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print(json.dumps(result))
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