/*
* 21.04.2004 Original verion. davagin@udm.ru.
*-----------------------------------------------------------------------
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package davaguine.jmac.decoder;
/**
* Author: Dmitry Vaguine
* Date: 04.03.2004
* Time: 14:51:31
*/
public class AntiPredictorExtraHigh3700To3800 extends AntiPredictor {
public void AntiPredict(int[] pInputArray, int[] pOutputArray, int NumberOfElements, int Iterations, long[] pOffsetValueArrayA, long[] pOffsetValueArrayB) {
for (int z = Iterations; z >= 0;) {
AntiPredictorOffset(pInputArray, pOutputArray, NumberOfElements, (int) pOffsetValueArrayA[z], (int) pOffsetValueArrayB[z], 64);
z--;
if (z >= 0) {
AntiPredictorOffset(pOutputArray, pInputArray, NumberOfElements, (int) pOffsetValueArrayA[z], (int) pOffsetValueArrayB[z], 64);
z--;
} else {
System.arraycopy(pOutputArray, 0, pInputArray, 0, NumberOfElements);
break;
}
}
AntiPredictor.AntiPredict(pInputArray, pOutputArray, NumberOfElements);
}
private AntiPredictorHigh3700To3800 AntiPredictor = new AntiPredictorHigh3700To3800();
protected void AntiPredictorOffset(int[] Input_Array, int[] Output_Array, int Number_of_Elements, int g1, int g2, int Max_Order) {
int q;
if ((g1 == 0) || (g2 == 0) || (Number_of_Elements <= Max_Order)) {
System.arraycopy(Input_Array, 0, Output_Array, 0, Number_of_Elements);
return;
}
System.arraycopy(Input_Array, 0, Output_Array, 0, Max_Order);
int m = 64;
int m2 = 64;
for (q = Max_Order; q < Number_of_Elements; q++) {
Output_Array[q] = Input_Array[q] + ((Output_Array[q - g1] * m) >> 9) - ((Output_Array[q - g2] * m2) >> 9);
if ((Input_Array[q] ^ Output_Array[q - g1]) > 0)
m++;
else
m--;
if ((Input_Array[q] ^ Output_Array[q - g2]) > 0)
m2--;
else
m2++;
}
}
}