package com.google.zxing.datamatrix.decoder;

import com.google.zxing.ChecksumException;
import com.google.zxing.FormatException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.DecoderResult;
import com.google.zxing.common.reedsolomon.GenericGF;
import com.google.zxing.common.reedsolomon.ReedSolomonDecoder;
import com.google.zxing.common.reedsolomon.ReedSolomonException;

/* loaded from: classes.dex */
public final class Decoder {
    private final ReedSolomonDecoder a = new ReedSolomonDecoder(GenericGF.m);

    public DecoderResult a(BitMatrix bitMatrix) throws FormatException, ChecksumException {
        BitMatrixParser bitMatrixParser = new BitMatrixParser(bitMatrix);
        DataBlock[] a = DataBlock.a(bitMatrixParser.b(), bitMatrixParser.a());
        int i = 0;
        for (DataBlock dataBlock : a) {
            i += dataBlock.b();
        }
        byte[] bArr = new byte[i];
        int length = a.length;
        for (int i2 = 0; i2 < length; i2++) {
            DataBlock dataBlock2 = a[i2];
            byte[] a2 = dataBlock2.a();
            int b = dataBlock2.b();
            a(a2, b);
            for (int i3 = 0; i3 < b; i3++) {
                bArr[(i3 * length) + i2] = a2[i3];
            }
        }
        return DecodedBitStreamParser.a(bArr);
    }

    private void a(byte[] bArr, int i) throws ChecksumException {
        int length = bArr.length;
        int[] iArr = new int[length];
        for (int i2 = 0; i2 < length; i2++) {
            iArr[i2] = bArr[i2] & 255;
        }
        try {
            this.a.a(iArr, bArr.length - i);
            for (int i3 = 0; i3 < i; i3++) {
                bArr[i3] = (byte) iArr[i3];
            }
        } catch (ReedSolomonException unused) {
            throw ChecksumException.getChecksumInstance();
        }
    }
}