修改方案，优先考虑 python 实现

python-subprocess/sysaudio/win.py

@@ -0,0 +1,53 @@
+"""获取 Windows 系统音频输出流"""
+
+import pyaudiowpatch as pyaudio
+
+def getDefaultLoopbackDevice(mic: pyaudio.PyAudio, info = True)->dict:
+    """
+    获取默认的系统音频输出的回环设备
+    Args:
+        mic (pyaudio.PyAudio): pyaudio对象
+        info (bool, optional): 是否打印设备信息
+
+    Returns:
+        dict: 系统音频输出的回环设备
+    """
+    try:
+        WASAPI_info = mic.get_host_api_info_by_type(pyaudio.paWASAPI)
+    except OSError:
+        print("Looks like WASAPI is not available on the system. Exiting...")
+        exit()
+
+    default_speaker = mic.get_device_info_by_index(WASAPI_info["defaultOutputDevice"])
+    if(info): print("wasapi_info:\n", WASAPI_info, "\n")
+    if(info): print("default_speaker:\n", default_speaker, "\n")
+
+    if not default_speaker["isLoopbackDevice"]:
+        for loopback in mic.get_loopback_device_info_generator():
+            if default_speaker["name"] in loopback["name"]:
+                default_speaker = loopback
+                if(info): print("Using loopback device:\n", default_speaker, "\n")
+                break
+        else:
+            print("Default loopback output device not found.")
+            print("Run `python -m pyaudiowpatch` to check available devices.")
+            print("Exiting...")
+            exit()
+            
+    if(info): print(f"Output Stream Device: #{default_speaker['index']} {default_speaker['name']}")
+    return default_speaker
+
+
+def getOutputStream():
+    mic = pyaudio.PyAudio()
+    default_speaker = getDefaultLoopbackDevice(mic, False)
+
+    stream = mic.open(
+        format = pyaudio.paInt16,
+        channels = default_speaker["maxInputChannels"],
+        rate = int(default_speaker["defaultSampleRate"]),
+        input = True,
+        input_device_index = default_speaker["index"]
+    )
+
+    return stream