fix: 唤醒机制

main/xiaozhi-server/core/utils/util.py

@@ -2,6 +2,7 @@ import re
 import os
 import json
 import copy
+import wave
 import socket
 import requests
 import subprocess
@@ -292,6 +293,33 @@ def play_audio_frames(conn, file_path):
         callback=handle_audio_frame
     )
 
+
+def opus_datas_to_wav_bytes(opus_datas, sample_rate=16000, channels=1):
+    """
+    将opus帧列表解码为wav字节流
+    """
+    decoder = opuslib_next.Decoder(sample_rate, channels)
+    pcm_datas = []
+
+    frame_duration = 60  # ms
+    frame_size = int(sample_rate * frame_duration / 1000)  # 960
+
+    for opus_frame in opus_datas:
+        # 解码为PCM（返回bytes，2字节/采样点）
+        pcm = decoder.decode(opus_frame, frame_size)
+        pcm_datas.append(pcm)
+
+    pcm_bytes = b"".join(pcm_datas)
+
+    # 写入wav字节流
+    wav_buffer = BytesIO()
+    with wave.open(wav_buffer, "wb") as wf:
+        wf.setnchannels(channels)
+        wf.setsampwidth(2)  # 16bit
+        wf.setframerate(sample_rate)
+        wf.writeframes(pcm_bytes)
+    return wav_buffer.getvalue()
+
 def check_vad_update(before_config, new_config):
     if (
         new_config.get("selected_module") is None