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POandroid app keeps crashing audioEffect error code -1
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  1. POandroid app keeps crashing audioEffect error code -1
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    copied!<p>I put some code in for continuous generation and playback of a sine wave inside my main activity for my app and created a PresetReverb object to test it out on the sine wave. But, every time I launch it, the app crashes, and it generates this in the logcat:</p> <pre><code>08-08 14:36:10.566: E/AudioEffect(19466): set(): AudioFlinger could not create effect, status: -1 08-08 14:36:10.566: E/AudioEffects-JNI(19466): AudioEffect initCheck failed -1 08-08 14:36:10.566: E/AudioEffect-JAVA(19466): Error code -1 when initializing AudioEffect. 08-08 14:36:10.566: W/dalvikvm(19466): threadid=11: thread exiting with uncaught exception (group=0x40ac2228) 08-08 14:36:10.576: E/AndroidRuntime(19466): FATAL EXCEPTION: Thread-11436 08-08 14:36:10.576: E/AndroidRuntime(19466): java.lang.RuntimeException: Cannot initialize effect engine for type: 47382d60-ddd8-11db-bf3a-0002a5d5c51bError: -1 08-08 14:36:10.576: E/AndroidRuntime(19466): at android.media.audiofx.AudioEffect.&lt;init&gt;(AudioEffect.java:387) 08-08 14:36:10.576: E/AndroidRuntime(19466): at android.media.audiofx.PresetReverb.&lt;init&gt;(PresetReverb.java:136) 08-08 14:36:10.576: E/AndroidRuntime(19466): at me.kevinossia.mystuff.MainScreen$2.run(MainScreen.java:47) </code></pre> <p>Here is the code for the activity:</p> <pre><code>package me.kevinossia.mystuff; import me.kevinossia.mystuff.tutorial.R; import android.app.Activity; import android.content.Intent; import android.media.AudioFormat; import android.media.AudioManager; import android.media.AudioTrack; import android.media.audiofx.PresetReverb; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainScreen extends Activity { Thread t; int sr = 44100; boolean isRunning=true; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.mainscreen); Button goBack = (Button) findViewById(R.id.back); goBack.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent goBack = new Intent(getApplicationContext(), HomeScreen.class); startActivity(goBack); } }); t = new Thread() { public void run() { setPriority(Thread.MAX_PRIORITY); int buffsize = AudioTrack.getMinBufferSize(sr, AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT); AudioTrack audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sr, AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT, buffsize, AudioTrack.MODE_STREAM); PresetReverb reverb = new PresetReverb(0,0); audioTrack.attachAuxEffect(reverb.getId()); reverb.setPreset(PresetReverb.PRESET_LARGEROOM); reverb.setEnabled(true); audioTrack.setAuxEffectSendLevel(1.0f); short samples[] = new short[buffsize]; int amp = 32767; double twopi = 2*Math.PI; double fr = 262.f; double ph = 0.0; audioTrack.play(); while(isRunning) { fr = 262; for(int i=0; i &lt; buffsize; i++) { samples[i] = (short) (amp*Math.sin(ph)); ph += twopi*fr/sr; } audioTrack.write(samples, 0, buffsize); } audioTrack.stop(); audioTrack.release(); } }; t.start(); } @Override public void onPause() { super.onPause(); isRunning = false; try { t.join(); } catch (InterruptedException e) { e.printStackTrace(); } t = null; } } </code></pre> <p>Apparently there is a problem with the line that creates the PresetReverb object...but I can't figure out why. What exactly is causing my app to crash?</p>
 

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