// This string is autogenerated by ChangeAppSettings.sh, do not change spaces amount
package net.sourceforge.clonekeenplus;


import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.KeyEvent;
import android.view.Window;
import android.view.WindowManager;
import android.media.AudioTrack;
import android.media.AudioManager;
import android.media.AudioFormat;
import java.io.*;
import java.nio.ByteBuffer;
import android.util.Log;
import java.lang.Thread;


class AudioThread {

	private MainActivity mParent;
	private AudioTrack mAudio;
	private byte[] mAudioBuffer;
	private int mVirtualBufSize;

	public AudioThread(MainActivity parent)
	{
		mParent = parent;
		mAudio = null;
		mAudioBuffer = null;
		nativeAudioInitJavaCallbacks();
	}
	
	public int fillBuffer()
	{
		if( mParent.isPaused() )
		{
			try{
				Thread.sleep(200);
			} catch (InterruptedException e) {}
		}
		else
		{
			//if( Globals.AudioBufferConfig == 0 ) // Gives too much spam to logcat, makes things worse
			//	mAudio.flush();

			mAudio.write( mAudioBuffer, 0, mVirtualBufSize );
		}
		
		return 1;
	}
	
	public int initAudio(int rate, int channels, int encoding, int bufSize)
	{
			if( mAudio == null )
			{
					channels = ( channels == 1 ) ? AudioFormat.CHANNEL_CONFIGURATION_MONO : 
													AudioFormat.CHANNEL_CONFIGURATION_STEREO;
					encoding = ( encoding == 1 ) ? AudioFormat.ENCODING_PCM_16BIT :
													AudioFormat.ENCODING_PCM_8BIT;

					mVirtualBufSize = bufSize;

					if( AudioTrack.getMinBufferSize( rate, channels, encoding ) > bufSize )
						bufSize = AudioTrack.getMinBufferSize( rate, channels, encoding );

					if(Globals.AudioBufferConfig != 0) {    // application's choice - use minimal buffer
						bufSize = (int)((float)bufSize * (((float)(Globals.AudioBufferConfig - 1) * 2.5f) + 1.0f));
						mVirtualBufSize = bufSize;
					}
					mAudioBuffer = new byte[bufSize];

					mAudio = new AudioTrack(AudioManager.STREAM_MUSIC,
												rate,
												channels,
												encoding,
												bufSize,
												AudioTrack.MODE_STREAM );
					mAudio.play();
			}
			return mVirtualBufSize;
	}
	
	public byte[] getBuffer()
	{
		return mAudioBuffer;
	}
	
	public int deinitAudio()
	{
		if( mAudio != null )
		{
			mAudio.stop();
			mAudio.release();
			mAudio = null;
		}
		mAudioBuffer = null;
		return 1;
	}
	
	public int initAudioThread()
	{
		// Make audio thread priority higher so audio thread won't get underrun
		Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
		return 1;
	}
	
	public int pauseAudioPlayback()
	{
		if( mAudio != null )
		{
			mAudio.pause();
			return 1;
		}
		return 0;
	}

	public int resumeAudioPlayback()
	{
		if( mAudio != null )
		{
			mAudio.play();
			return 1;
		}
		return 0;
	}
	
	private native int nativeAudioInitJavaCallbacks();
}