如何配置OpenSL比主音箱或耳机等耳机扬声器工作 [英] How to configure OpenSL to work with ear speaker other than main speaker or headphones

问题描述

我试过在Android的NDK本地音频code样品。当我尝试记录一些演讲，然后回放它工作正常。它使用的语音播放主音箱（外放）。我想，这样的言论的​​听筒，而不是主要的扬声器播放修改code。任何帮助吗？

I've tried the native-audio code sample in android NDK. When i try to record some speech and then play it back it works fine. It uses the main speaker(loud speaker) for the speech playback. I want to modify the code so that the speech is played in the ear speaker instead of the main speaker. Any help?

推荐答案

我解决了这个问题，我已经找到了谷歌组相关的话题。这是真的很有帮助。这里的链接：
https://groups.google.com/forum/#​​!topic / Android的NDK / O-hufEm20cU

I solved the problem and I've found a google group of related topic. It was really helpful. Here's the link: https://groups.google.com/forum/#!topic/android-ndk/O-hufEm20cU

我提供与Android NDK本地音频的例子进行了测试。您对先配置的Andr​​oid界面，然后设置流类型创建音频播放器后STREAM_VOICE。

I tested it in the native-audio example provided with android NDK. You've to take interface of android configuration first and then set stream type to STREAM_VOICE after creating the audio player.

// Code for working with ear speaker by setting stream type to STREAM_VOICE
SLAndroidConfigurationItf playerConfig;
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_ANDROIDCONFIGURATION, &playerConfig);
SLint32 streamType = SL_ANDROID_STREAM_VOICE;
result = (*playerConfig)->SetConfiguration(playerConfig, SL_ANDROID_KEY_STREAM_TYPE, &streamType, sizeof(SLint32));

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