mirror of
https://github.com/xinnan-tech/xiaozhi-esp32-server.git
synced 2026-07-22 07:03:53 +08:00
增加流式处理方法
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@@ -5,6 +5,8 @@ import re
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import os
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import wave
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from io import BytesIO
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from typing import Callable, Any
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from core.utils import p3
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import numpy as np
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import requests
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@@ -245,6 +247,23 @@ def audio_bytes_to_data(audio_bytes, file_type, is_opus=True):
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raw_data = audio.raw_data
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return pcm_to_data(raw_data, is_opus)
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def audio_bytes_to_data_stream(audio_bytes, file_type, is_opus, callback: Callable[[Any], Any]):
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"""
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直接用音频二进制数据转为opus/pcm数据,支持wav、mp3、p3
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"""
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if file_type == "p3":
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# 直接用p3解码
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return p3.decode_opus_from_bytes_stream(audio_bytes, callback)
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else:
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# 其他格式用pydub
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audio = AudioSegment.from_file(
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BytesIO(audio_bytes), format=file_type, parameters=["-nostdin"]
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)
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audio = audio.set_channels(1).set_frame_rate(16000).set_sample_width(2)
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raw_data = audio.raw_data
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pcm_to_data_stream(raw_data, is_opus, callback)
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return None
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def pcm_to_data(raw_data, is_opus=True):
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# 初始化Opus编码器
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@@ -276,6 +295,32 @@ def pcm_to_data(raw_data, is_opus=True):
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return datas
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def pcm_to_data_stream(raw_data, is_opus=True, callback: Callable[[Any], Any]=None):
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# 初始化Opus编码器
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encoder = opuslib_next.Encoder(16000, 1, opuslib_next.APPLICATION_AUDIO)
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# 编码参数
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frame_duration = 60 # 60ms per frame
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frame_size = int(16000 * frame_duration / 1000) # 960 samples/frame
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# 按帧处理所有音频数据(包括最后一帧可能补零)
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for i in range(0, len(raw_data), frame_size * 2): # 16bit=2bytes/sample
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# 获取当前帧的二进制数据
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chunk = raw_data[i : i + frame_size * 2]
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# 如果最后一帧不足,补零
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if len(chunk) < frame_size * 2:
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chunk += b"\x00" * (frame_size * 2 - len(chunk))
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if is_opus:
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# 转换为numpy数组处理
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np_frame = np.frombuffer(chunk, dtype=np.int16)
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# 编码Opus数据
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frame_data = encoder.encode(np_frame.tobytes(), frame_size)
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callback(frame_data)
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else:
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frame_data = chunk if isinstance(chunk, bytes) else bytes(chunk)
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callback(frame_data)
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def opus_datas_to_wav_bytes(opus_datas, sample_rate=16000, channels=1):
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"""
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