python-sounddevice无法检测音频接口(windows)上的所有输入通道

import ctypes

# 定义Windows API函数的参数类型
WAVE_MAPPER = -1
MIXER_GETLINEINFOF_SOURCE = 0x00000001
MIXERCONTROL_CONTROLTYPE_MUX = 0x20000000

class MIXERLINE(ctypes.Structure):
    _fields_ = [
        ('cbStruct', ctypes.c_uint),
        ('dwDestination', ctypes.c_uint),
        ('dwSource', ctypes.c_uint),
        ('dwLineID', ctypes.c_uint),
        ('fdwLine', ctypes.c_uint),
        ('dwUser', ctypes.c_uint),
        ('dwComponentType', ctypes.c_uint),
        ('cChannels', ctypes.c_uint),
        ('cConnections', ctypes.c_uint),
        ('cControls', ctypes.c_uint),
        ('szShortName', ctypes.c_char * 16),
        ('szName', ctypes.c_char * 64),
        ('dwType', ctypes.c_uint),
        ('dwDeviceID', ctypes.c_uint),
        ('wMid', ctypes.c_ushort),
        ('wPid', ctypes.c_ushort),
        ('vDriverVersion', ctypes.c_uint),
        ('szPname', ctypes.c_char * 32),
    ]

# 调用Windows API函数获取音频设备信息
mixer = ctypes.windll.winmm.mixerOpen(None, 0)
mixerinfo = MIXERLINE()
mixerinfo.cbStruct = ctypes.sizeof(MIXERLINE)
mixerinfo.dwComponentType = MIXERCONTROL_CONTROLTYPE_MUX
mixerinfo.dwDestination = WAVE_MAPPER
ctypes.windll.winmm.mixerGetLineInfoA(ctypes.c_void_p(mixer), ctypes.byref(mixerinfo), MIXER_GETLINEINFOF_SOURCE)

# 打印音频设备的输入通道信息
print("输入通道数量:", mixerinfo.cConnections)
for i in range(mixerinfo.cConnections):
    print("输入通道", i+1, "名称:", mixerinfo.szName)

# 关闭音频设备
ctypes.windll.winmm.mixerClose(mixer)