Android Open Source - voicesmith File Out Device

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From Project

Back to project page voicesmith.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Voicesmith <http://voicesmith.jurihock.de/>
 *//from   w ww  .  j  a  v  a  2s  .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.io.file;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteOrder;

import android.content.Context;
import android.os.Environment;
import de.jurihock.voicesmith.Utils;

public final class FileOutDevice extends FileDevice
{
  private DataOutputStream  output  = null;

  public FileOutDevice(Context context, String fileName)
    throws IOException
  {
    this(context, fileName, ByteOrder.nativeOrder());
  }

  public FileOutDevice(Context context, String fileName, ByteOrder fileEncoding)
    throws IOException
  {
    super(context);

    if (!Environment.MEDIA_MOUNTED.equals(
      Environment.getExternalStorageState()))
    {
      throw new IOException("Unable to mount external storage!");
    }

    File fileDir = Environment.getExternalStorageDirectory();
    File file = new File(fileDir, fileName);

    if (file.exists()) file.delete();
    file.createNewFile();

    this.setFilePath(file.getAbsolutePath());
    this.setFileEncoding(fileEncoding);

    output = new DataOutputStream(new FileOutputStream(file));
  }

  @Override
  public int write(short[] buffer, int offset, int count)
  {
        if (count == 0) return 0;

    int result = 0;

    final boolean swapBytes =
      this.getFileEncoding() != ByteOrder.nativeOrder();

    for (int i = 0; i < count; i++)
    {
      try
      {
        short value = buffer[i + offset];

        if (swapBytes) value = swapBytes(value);

        output.writeShort(value);
        result++;
      }
      catch (IOException exception)
      {
        new Utils(context).log(exception);
      }
    }

    flush();

    return result;
  }

  @Override
  public void flush()
  {
    try
    {
      output.flush();
    }
    catch (IOException exception)
    {
      new Utils(context).log(exception);
    }
  }

  @Override
  public void dispose()
  {
    if (output != null)
    {
      try
      {
        output.close();
      }
      catch (IOException exception)
      {
        new Utils(context).log(exception);
      }
      finally
      {
        output = null;
      }
    }
  }
}

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