iOS获取音频设备信息
iOS获取音频设备信息。
方法1：
CFDictionaryRef descDictRef = nil;
UInt32 refSize = sizeof(descDictRef);
status = AudioSessionGetProperty(kAudioSessionProperty_AudioRouteDescription, &refSize, &descDictRef);
打印信息如下：
Printing description of dictRef:
{
"RouteDetailedDescription_Outputs" = (
{
"RouteDetailedDescriptionKey_EndpointType" = Headphones;
"RouteDetailedDescription_ChannelDescriptions" = (
{
"ChannelDescription_Label" = 1;
"ChannelDescription_Name" = "AirPods \U5de6";
},
{
"ChannelDescription_Label" = 2;
"ChannelDescription_Name" = "AirPods \U53f3";
}
);
"RouteDetailedDescription_ID" = 486;
"RouteDetailedDescription_IsHeadphones" = 1;
"RouteDetailedDescription_IsVoiceProcessingSupported" = 0;
"RouteDetailedDescription_Name" = AirPods;
"RouteDetailedDescription_NumberOfChannels" = 2;
"RouteDetailedDescription_PortType" = BluetoothA2DPOutput;
"RouteDetailedDescription_UID" = "7C:04:D0:8A:43:33-tacl";
}
);
}
方法2：
NSArray*availableInputs=[[AVAudioSessionsharedInstance]availableInputs];
打印信息如下：
Printing description of availableInputs:
<__NSSingleObjectArrayI 0x17400cb30>(
)
如果是蓝牙设备，采集的时候采样率设置比较高，传输的时候可能会丢数据，可以采样率设置小一点，后面再做重采样处理。