核心音频:使用扬声器，是否可以路由到内部扬声器-AVAudioSessionPortBuiltInReceiver(不连接扬声器) [英] Core Audio: Working with Speaker, Is it possible to route to the internal speaker- AVAudioSessionPortBuiltInReceiver(Not to loud speaker)

问题描述

根据文档，Ther并不是关于路由或获取"AVAudioSessionPortBuiltInReceiver"的端口详细信息的文档. (注意:请再次阅读，与该端口AVAudioSessionPortBuiltInSpeaker无关).

As per the docs, Ther is no documentation about routing or even getting of the Port details for the "AVAudioSessionPortBuiltInReceiver". (Note: Please read again, its not about this port AVAudioSessionPortBuiltInSpeaker) .

正如我发现的，只有overrideOutputAudioPort只能用于

As I found that and only possible overrideOutputAudioPort can be done only for

    public enum AVAudioSessionPortOverride : UInt {
    case None
    case Speaker
    }

问题是，还有没有可能通过:

public let AVAudioSessionPortBuiltInReceiver: String /* The speaker you hold to your ear when on a phone call */

使用MPVolumeView类(RouteButton)可以列出(路由到)AVAudioSessionPortBuiltInReceiver，是否可以实现?

Using MPVolumeView class(RouteButton) is listing out(routing to) of the AVAudioSessionPortBuiltInReceiver possible, Is it possible to achieve the same?.

推荐答案

如果配置音频会话以进行播放和录制(并关闭与其他人的混音)，iPhone上的默认路由将变为播放音频如果用户插入耳机，则从较小的耳机(而不是底部的扬声器)中拔出，或者从插入的耳机中拔出.

If you configure the audio session for play-and-record (and leave mix-with-others off), the default route on an iPhone becomes to play audio out the smaller ear speaker (not the louder speaker on the bottom), or out the plugged-in headset, if the user plugs a headset in.

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