129 lines
4.1 KiB
Java
129 lines
4.1 KiB
Java
package o;
|
|
|
|
import com.google.zxing.common.reedsolomon.ReedSolomonException;
|
|
|
|
/* loaded from: classes2.dex */
|
|
public final class lxg {
|
|
private final Ayo a;
|
|
|
|
public lxg(Ayo ayo) {
|
|
this.a = ayo;
|
|
}
|
|
|
|
public final void b(int[] iArr, int i) throws ReedSolomonException {
|
|
uTj utj = new uTj(this.a, iArr);
|
|
int[] iArr2 = new int[i];
|
|
boolean z = true;
|
|
for (int i2 = 0; i2 < i; i2++) {
|
|
Ayo ayo = this.a;
|
|
int b = utj.b(ayo.f[ayo.h + i2]);
|
|
iArr2[(i - 1) - i2] = b;
|
|
if (b != 0) {
|
|
z = false;
|
|
}
|
|
}
|
|
if (z) {
|
|
return;
|
|
}
|
|
uTj[] b2 = b(this.a.b(i, 1), new uTj(this.a, iArr2), i);
|
|
uTj utj2 = b2[0];
|
|
uTj utj3 = b2[1];
|
|
int[] e = e(utj2);
|
|
int[] b3 = b(utj3, e);
|
|
for (int i3 = 0; i3 < e.length; i3++) {
|
|
int length = iArr.length - 1;
|
|
Ayo ayo2 = this.a;
|
|
int i4 = e[i3];
|
|
if (i4 == 0) {
|
|
throw new IllegalArgumentException();
|
|
}
|
|
int i5 = length - ayo2.m[i4];
|
|
if (i5 < 0) {
|
|
throw new ReedSolomonException("Bad error location");
|
|
}
|
|
iArr[i5] = Ayo.a(iArr[i5], b3[i3]);
|
|
}
|
|
}
|
|
|
|
private uTj[] b(uTj utj, uTj utj2, int i) throws ReedSolomonException {
|
|
if (utj.a() >= utj2.a()) {
|
|
utj2 = utj;
|
|
utj = utj2;
|
|
}
|
|
uTj utj3 = this.a.l;
|
|
uTj utj4 = this.a.f8102o;
|
|
while ((utj.a() << 1) >= i) {
|
|
if (((Boolean) uTj.e(new Object[]{utj}, 587912493, -587912492, System.identityHashCode(utj))).booleanValue()) {
|
|
throw new ReedSolomonException("r_{i-1} was zero");
|
|
}
|
|
uTj utj5 = this.a.l;
|
|
int c = this.a.c(utj.d(utj.a()));
|
|
while (utj2.a() >= utj.a() && !((Boolean) uTj.e(new Object[]{utj2}, 587912493, -587912492, System.identityHashCode(utj2))).booleanValue()) {
|
|
int a = utj2.a() - utj.a();
|
|
int e = this.a.e(utj2.d(utj2.a()), c);
|
|
utj5 = utj5.e(this.a.b(a, e));
|
|
utj2 = utj2.e(utj.e(a, e));
|
|
}
|
|
uTj e2 = utj5.c(utj4).e(utj3);
|
|
if (utj2.a() >= utj.a()) {
|
|
StringBuilder sb = new StringBuilder("Division algorithm failed to reduce polynomial? r: ");
|
|
sb.append(utj2);
|
|
sb.append(", rLast: ");
|
|
sb.append(utj);
|
|
throw new IllegalStateException(sb.toString());
|
|
}
|
|
uTj utj6 = utj2;
|
|
utj2 = utj;
|
|
utj = utj6;
|
|
uTj utj7 = utj4;
|
|
utj4 = e2;
|
|
utj3 = utj7;
|
|
}
|
|
int d = utj4.d(0);
|
|
if (d == 0) {
|
|
throw new ReedSolomonException("sigmaTilde(0) was zero");
|
|
}
|
|
int c2 = this.a.c(d);
|
|
return new uTj[]{utj4.c(c2), utj.c(c2)};
|
|
}
|
|
|
|
private int[] e(uTj utj) throws ReedSolomonException {
|
|
int a = utj.a();
|
|
if (a == 1) {
|
|
return new int[]{utj.d(1)};
|
|
}
|
|
int[] iArr = new int[a];
|
|
int i = 0;
|
|
for (int i2 = 1; i2 < this.a.n && i < a; i2++) {
|
|
if (utj.b(i2) == 0) {
|
|
iArr[i] = this.a.c(i2);
|
|
i++;
|
|
}
|
|
}
|
|
if (i == a) {
|
|
return iArr;
|
|
}
|
|
throw new ReedSolomonException("Error locator degree does not match number of roots");
|
|
}
|
|
|
|
private int[] b(uTj utj, int[] iArr) {
|
|
int length = iArr.length;
|
|
int[] iArr2 = new int[length];
|
|
for (int i = 0; i < length; i++) {
|
|
int c = this.a.c(iArr[i]);
|
|
int i2 = 1;
|
|
for (int i3 = 0; i3 < length; i3++) {
|
|
if (i != i3) {
|
|
int e = this.a.e(iArr[i3], c);
|
|
i2 = this.a.e(i2, (e & 1) == 0 ? e | 1 : e & (-2));
|
|
}
|
|
}
|
|
iArr2[i] = this.a.e(utj.b(c), this.a.c(i2));
|
|
if (this.a.h != 0) {
|
|
iArr2[i] = this.a.e(iArr2[i], c);
|
|
}
|
|
}
|
|
return iArr2;
|
|
}
|
|
}
|