Android Open Source - EnklawaPlayer Converter

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Back to project page EnklawaPlayer.

License

The source code is released under:

GNU General Public License

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Java Source Code

package macbury.pod.extensions;
//from ww w. ja  va2 s . c  o m

import android.util.Log;

/** Provides methods for converting various units. */
public final class Converter {
  /** Class shall not be instantiated. */
  private Converter() {
  }

  /** Logging tag. */
  private static final String TAG = "Converter";


  /** Indicates that the value is in the Byte range.*/
  private static final int B_RANGE = 0;
  /** Indicates that the value is in the Kilobyte range.*/
  private static final int KB_RANGE = 1;
  /** Indicates that the value is in the Megabyte range.*/
  private static final int MB_RANGE = 2;
  /** Indicates that the value is in the Gigabyte range.*/
  private static final int GB_RANGE = 3;
  /** Determines the length of the number for best readability.*/
  private static final int NUM_LENGTH = 1024;


  private static final int HOURS_MIL = 3600000;
  private static final int MINUTES_MIL = 60000;
  private static final int SECONDS_MIL = 1000;

  /** Takes a byte-value and converts it into a more readable
   *  String.
   *  @param input The value to convert
   *  @return The converted String with a unit
   * */
  public static String byteToString(final long input) {
    int i = 0;
    int result = 0;

    for (i = 0; i < GB_RANGE + 1; i++) {
      result = (int) (input / Math.pow(1024, i));
      if (result < NUM_LENGTH) {
        break;
      }
    }

    switch (i) {
      case B_RANGE:
        return result + " B";
      case KB_RANGE:
        return result + " KB";
      case MB_RANGE:
        return result + " MB";
      case GB_RANGE:
        return result + " GB";
      default:
        Log.e(TAG, "Error happened in byteToString");
        return "ERROR";
    }
  }

  /** Converts milliseconds to a string containing hours, minutes and seconds */
  public static String getDurationStringLong(int duration) {
    int h = duration / HOURS_MIL;
    int rest = duration - h * HOURS_MIL;
    int m = rest / MINUTES_MIL;
    rest -= m * MINUTES_MIL;
    int s = rest / SECONDS_MIL;

    return String.format("%02d:%02d:%02d", h, m, s);
  }

  /** Converts milliseconds to a string containing hours and minutes */
  public static String getDurationStringShort(int duration) {
    int h = duration / HOURS_MIL;
    int rest = duration - h * HOURS_MIL;
    int m = rest / MINUTES_MIL;

    return String.format("%02d:%02d", h, m);
  }

  /** Converts long duration string (HH:MM:SS) to milliseconds. */
  public static int durationStringLongToMs(String input) {
    String[] parts = input.split(":");
    if (parts.length != 3) {
      return 0;
    }
    return Integer.valueOf(parts[0]) * 3600 * 1000 +
            Integer.valueOf(parts[1]) * 60 * 1000 +
            Integer.valueOf(parts[2]) * 1000;
  }

  /** Converts short duration string (HH:MM) to milliseconds. */
  public static int durationStringShortToMs(String input) {
    String[] parts = input.split(":");
    if (parts.length != 2) {
      return 0;
    }
    return Integer.valueOf(parts[0]) * 3600 * 1000 +
            Integer.valueOf(parts[1]) * 1000 * 60;
  }

}

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