Android Open Source - audioplayer Preset

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License

The source code is released under:

GNU General Public License

Java Source Code

package fr.julien_dumortier.simplemusicplayer.equalizer.preset;
/*w  w w  . j a  v  a2s  .  com*/
/**
 * 
 * @author jdumortier
 *
 *    
        0- Basses
        1- Aigus
        2- Basses et aigus
        3- Moyen
        4- Plat
        5- Rock
        6- Pop
        7- Dance
 *
 *
 *
 */
public class Preset {

  private static final int [][] mPreset = {
                      /*BASSES*/{86, 78, 61, 54, 50},
                      /*AIGUS*/{50, 50, 54, 64, 77},
                      /*BASSES ET AIGUS*/{86, 77, 62, 77, 86},
                      /*MOYEN*/{61, 50, 50, 50, 61},
                      /*PLAT*/{50, 50, 50, 50, 50},
                      /*DANCE*/{77, 50, 57, 61, 54},
                      /*ROCK*/{84, 77, 57, 77, 82},
                      /*POP*/{47, 61, 74, 61, 47}
                      };
  
  private int [] mPercentPresets;
  
  public Preset(int posPreset) {
    if(mPreset.length>posPreset)
      mPercentPresets = mPreset[posPreset];
    else
      mPercentPresets = mPreset[0];
  }
  
  public int [] formatPreset(int nbBands, int minValue, int maxValue) {
    int [] formatedPercentPreset = formatPreset(nbBands);
    int [] formatedPreset = new int[formatedPercentPreset.length];
    int diff = maxValue + (minValue<0 ? -minValue : minValue);
    for(int i=0; i<formatedPercentPreset.length; i++) {
      formatedPreset[i] =  ((formatedPercentPreset[i]*diff)/100);
    }
    return formatedPreset;
  }
  
  private int [] formatPreset(int nbBands) {
    int []formatedPreset = new int[nbBands];
    
    if(nbBands>=(mPercentPresets.length*2)) {
      for(int i = 0; i<mPercentPresets.length; i++) {
        formatedPreset[i] = mPercentPresets[i];
        formatedPreset[i+1] = mPercentPresets[i];
      }
      if(nbBands>(mPercentPresets.length*2)) {
        for(int i = (mPercentPresets.length*2); i<nbBands; i++)
          formatedPreset[i] = mPercentPresets[mPercentPresets.length-1];
      }
    } else {
      for(int i = 0; i<mPercentPresets.length; i++) {
        formatedPreset[i] = mPercentPresets[i];
      }
      if(nbBands>mPercentPresets.length) {
        for(int i = mPercentPresets.length; i<nbBands; i++)
          formatedPreset[i] = mPercentPresets[mPercentPresets.length-1];
      }
    }
    return formatedPreset;
  }
}

Java Source Code List

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