Android Open Source - voicesmith Low Delay Thread

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Voicesmith <http://voicesmith.jurihock.de/>
 *//from   w  w w . java  2 s . co  m
 * Copyright (c) 2011-2014 Juergen Hock
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.jurihock.voicesmith.threads;

import android.content.Context;
import de.jurihock.voicesmith.FrameType;
import de.jurihock.voicesmith.Preferences;
import de.jurihock.voicesmith.Utils;
import de.jurihock.voicesmith.dsp.processors.AmplifyProcessor;
import de.jurihock.voicesmith.io.AudioDevice;

public class LowDelayThread extends AudioThread
{
  private final AmplifyProcessor  amplifier;
  private final short[]      buffer;

  public LowDelayThread(Context context, AudioDevice input, AudioDevice output)
  {
    super(context, input, output);

    Preferences preferences = new Preferences(context);

    FrameType frameType = FrameType.Small;
    int frameSize = preferences.getFrameSize(
      frameType, input.getSampleRate());

    amplifier = new AmplifyProcessor(context);

    buffer = new short[frameSize];

    new Utils(context).log("Delay frame size is %s.", buffer.length);
  }

  @Override
  protected final void doProcessing()
  {
    while (!Thread.interrupted())
    {
      // Utils.tic("IN");
      input.read(buffer);
      // Utils.toc("IN");

      amplifier.processFrame(buffer);

      // Utils.tic("OUT");
      output.write(buffer);
      // Utils.toc("OUT");

    }
  }
}

Java Source Code List

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