package o;

import com.drew.imaging.png.PngProcessingException;
import com.google.common.base.Ascii;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/* loaded from: classes.dex */
public final class VFt {
    private static final byte[] e = {-119, 80, 78, 71, 13, 10, Ascii.SUB, 10};

    public static Iterable<xIZ> b(Eaa eaa, Set<nFt> set) throws PngProcessingException, IOException {
        byte[] bArr;
        eaa.e = true;
        byte[] bArr2 = e;
        if (!Arrays.equals(bArr2, eaa.a(bArr2.length))) {
            throw new PngProcessingException("PNG signature mismatch");
        }
        ArrayList arrayList = new ArrayList();
        HashSet hashSet = new HashSet();
        boolean z = false;
        boolean z2 = false;
        while (!z) {
            int a = eaa.a();
            if (a < 0) {
                throw new PngProcessingException("PNG chunk length exceeds maximum");
            }
            nFt nft = new nFt(eaa.a(4));
            boolean z3 = set == null || set.contains(nft);
            if (z3) {
                bArr = eaa.a(a);
            } else {
                eaa.b(a);
                bArr = null;
            }
            eaa.b(4L);
            if (z3 && hashSet.contains(nft) && !nft.q) {
                throw new PngProcessingException(String.format("Observed multiple instances of PNG chunk '%s', for which multiples are not allowed", nft));
            }
            if (nft.equals(nFt.b)) {
                z2 = true;
            } else if (!z2) {
                throw new PngProcessingException(String.format("First chunk should be '%s', but '%s' was observed", nFt.b, nft));
            }
            if (nft.equals(nFt.c)) {
                z = true;
            }
            if (z3) {
                arrayList.add(new xIZ(nft, bArr));
            }
            hashSet.add(nft);
        }
        return arrayList;
    }
}