输入接口
- AVAudioSessionPortLineIn: 有线连接在总线坞的外置输入装置
- AVAudioSessionPortBuiltInMic: 内置麦克风
- AVAudioSessionPortHeadsetMic: 有线耳机的麦克风
输出接口
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AVAudioSessionPortLineOut
Line-level output to the dock connector.有线连接在总线坞的外置输出装置
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AVAudioSessionPortHeadphones
Output to a wired headset.(输出到有线耳机)
AVAudioSessionPortBluetoothA2DP
A2DP全名是Advanced Audio Distribution Profile 蓝牙音频传输模型协定
Output on a Bluetooth A2DP device (蓝牙无线设备(A2DP))-
AVAudioSessionPortBuiltInReceiver
Output to a speaker intended to be held near the ear.(贴耳朵时候内置扬声器(打电话的时候的听筒))
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AVAudioSessionPortBuiltInSpeaker
Output to the device’s built-in speaker.(输出到设备的内置扬声器。(iOS设备内置的扬声器))
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AVAudioSessionPortHDMI
Output to a device via the High-Definition Multimedia Interface (HDMI) specification.(通过高清多媒体接口(HDMI)规范输出到设备。) 通过HDMI(高清多媒体接口)连接的设备
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AVAudioSessionPortAirPlay
Output to a remote device over AirPlay.(远程AirPlay设备.)
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AVAudioSessionPortBluetoothLE
Output to a Bluetooth Low Energy (LE) peripheral.(蓝牙低电量输出设备.)
输入输出接口
- AVAudioSessionPortBluetoothHFP: 基于蓝牙的免提设备
- AVAudioSessionPortUSBAudio: USB连接的设备
- AVAudioSessionPortCarAudio: 车载音频设备