public OtaBitmap(byte[] otaBitmapData){
  if (otaBitmapData != null) {
    int infoField=otaBitmapData[0];
    width_=otaBitmapData[1];
    height_=otaBitmapData[2];
    int depth=otaBitmapData[3];
    int length=otaBitmapData.length - 4;
    otaImgData_=new byte[length];
    System.arraycopy(otaBitmapData,4,otaImgData_,0,length);
  }
}

public OtaBitmap ( byte [ ] otaBitmapData ) { if ( otaBitmapData != null ) { int infoField = otaBitmapData [ 0 ] ; width_ = otaBitmapData [ 1 ] ; height_ = otaBitmapData [ 2 ] ; int depth = otaBitmapData [ 3 ] ; int length = otaBitmapData . length - 4 ; otaImgData_ = new byte [ length ] ; System . arraycopy ( otaBitmapData , 4 , otaImgData_ , 0 , length ) ; } }
initialise with a raw ota bitmap
