将均衡器附加到Android全局音频输出 [英] Attaching Equalizer to Android global audio output

问题描述

我正计划为Android开发一个均衡器应用.我在Equalizer类文档此处中注意到了，它说:

I am planning to make an equalizer app for Android. I noticed in the Equalizer class documentation here, it says:

注意:不赞成使用会话0将均衡器附加到全局音频输出混合.

NOTE: attaching an Equalizer to the global audio output mix by use of session 0 is deprecated.

我从其他问题中看到，尽管不建议使用此功能，但在某些Android版本中仍然可行；但是，最新答案是2013年的答案.

I see from other questions that although this is deprecated, it was still possible in certain Android versions; however the most recent answer is from 2013.

在最新的Android版本(5.1棒棒糖)中，仍然可以通过会话0将均衡器附加到全局音频吗?如果没有，建议将均衡器应用于全局音频的推荐方法是什么?

Is it still possible to attach an Equalizer to global audio via session 0 in the latest Android version (5.1 Lollipop)? If not, what is the recommended way to apply an equalizer to global audio going forward?

推荐答案

根据

According to Android, you can use ACTION_OPEN_AUDIO_EFFECT_CONTROL_SESSION to receive the id of a playing audio session:

旨在向效果控制应用程序或服务发出信号，通知它打开了新的音频会话，并要求应用音频效果.

Intent to signal to the effect control application or service that a new audio session is opened and requires audio effects to be applied.

我尝试在清单中添加常数，但它仅适用于Spotify和Youtube Music等音乐应用程序:

I tried adding the constant in the manifest, but it only worked for music apps such as Spotify and Youtube Music:

<receiver android:name=".receivers.AudioSessionReceiver">
        <intent-filter>
            <action android:name="android.media.action.OPEN_AUDIO_EFFECT_CONTROL_SESSION"/>
        </intent-filter>
</receiver>

然后，您可以使用ID创建一个附加到会话ID的均衡器.

Then, you can use the id to create an equalizer attached to the session id.

public class AudioSessionReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    int id = intent.getIntExtra(Equalizer.EXTRA_AUDIO_SESSION, -1);
    String packageName = intent.getStringExtra(Equalizer.EXTRA_PACKAGE_NAME);
}

}

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