139 lines
7.8 KiB
Java
139 lines
7.8 KiB
Java
package io.grpc.okhttp.internal.framed;
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import com.google.common.base.Ascii;
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import com.google.common.primitives.UnsignedBytes;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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/* loaded from: classes6.dex */
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class Huffman {
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private static final int[] CODES = {8184, 8388568, 268435426, 268435427, 268435428, 268435429, 268435430, 268435431, 268435432, 16777194, 1073741820, 268435433, 268435434, 1073741821, 268435435, 268435436, 268435437, 268435438, 268435439, 268435440, 268435441, 268435442, 1073741822, 268435443, 268435444, 268435445, 268435446, 268435447, 268435448, 268435449, 268435450, 268435451, 20, 1016, 1017, 4090, 8185, 21, 248, 2042, 1018, 1019, 249, 2043, 250, 22, 23, 24, 0, 1, 2, 25, 26, 27, 28, 29, 30, 31, 92, 251, 32764, 32, 4091, 1020, 8186, 33, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 252, 115, 253, 8187, 524272, 8188, 16380, 34, 32765, 3, 35, 4, 36, 5, 37, 38, 39, 6, 116, 117, 40, 41, 42, 7, 43, 118, 44, 8, 9, 45, 119, 120, 121, 122, 123, 32766, 2044, 16381, 8189, 268435452, 1048550, 4194258, 1048551, 1048552, 4194259, 4194260, 4194261, 8388569, 4194262, 8388570, 8388571, 8388572, 8388573, 8388574, 16777195, 8388575, 16777196, 16777197, 4194263, 8388576, 16777198, 8388577, 8388578, 8388579, 8388580, 2097116, 4194264, 8388581, 4194265, 8388582, 8388583, 16777199, 4194266, 2097117, 1048553, 4194267, 4194268, 8388584, 8388585, 2097118, 8388586, 4194269, 4194270, 16777200, 2097119, 4194271, 8388587, 8388588, 2097120, 2097121, 4194272, 2097122, 8388589, 4194273, 8388590, 8388591, 1048554, 4194274, 4194275, 4194276, 8388592, 4194277, 4194278, 8388593, 67108832, 67108833, 1048555, 524273, 4194279, 8388594, 4194280, 33554412, 67108834, 67108835, 67108836, 134217694, 134217695, 67108837, 16777201, 33554413, 524274, 2097123, 67108838, 134217696, 134217697, 67108839, 134217698, 16777202, 2097124, 2097125, 67108840, 67108841, 268435453, 134217699, 134217700, 134217701, 1048556, 16777203, 1048557, 2097126, 4194281, 2097127, 2097128, 8388595, 4194282, 4194283, 33554414, 33554415, 16777204, 16777205, 67108842, 8388596, 67108843, 134217702, 67108844, 67108845, 134217703, 134217704, 134217705, 134217706, 134217707, 268435454, 134217708, 134217709, 134217710, 134217711, 134217712, 67108846};
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private static final byte[] CODE_LENGTHS = {13, Ascii.ETB, 28, 28, 28, 28, 28, 28, 28, Ascii.CAN, 30, 28, 28, 30, 28, 28, 28, 28, 28, 28, 28, 28, 30, 28, 28, 28, 28, 28, 28, 28, 28, 28, 6, 10, 10, 12, 13, 6, 8, 11, 10, 10, 8, 11, 8, 6, 6, 6, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 8, 15, 6, 12, 10, 13, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 7, 8, 13, 19, 13, 14, 6, 15, 5, 6, 5, 6, 5, 6, 6, 6, 5, 7, 7, 6, 6, 6, 5, 6, 7, 6, 5, 5, 6, 7, 7, 7, 7, 7, 15, 11, 14, 13, 28, Ascii.DC4, Ascii.SYN, Ascii.DC4, Ascii.DC4, Ascii.SYN, Ascii.SYN, Ascii.SYN, Ascii.ETB, Ascii.SYN, Ascii.ETB, Ascii.ETB, Ascii.ETB, Ascii.ETB, Ascii.ETB, Ascii.CAN, Ascii.ETB, Ascii.CAN, Ascii.CAN, Ascii.SYN, Ascii.ETB, Ascii.CAN, Ascii.ETB, Ascii.ETB, Ascii.ETB, Ascii.ETB, Ascii.NAK, Ascii.SYN, Ascii.ETB, Ascii.SYN, Ascii.ETB, Ascii.ETB, Ascii.CAN, Ascii.SYN, Ascii.NAK, Ascii.DC4, Ascii.SYN, Ascii.SYN, Ascii.ETB, Ascii.ETB, Ascii.NAK, Ascii.ETB, Ascii.SYN, Ascii.SYN, Ascii.CAN, Ascii.NAK, Ascii.SYN, Ascii.ETB, Ascii.ETB, Ascii.NAK, Ascii.NAK, Ascii.SYN, Ascii.NAK, Ascii.ETB, Ascii.SYN, Ascii.ETB, Ascii.ETB, Ascii.DC4, Ascii.SYN, Ascii.SYN, Ascii.SYN, Ascii.ETB, Ascii.SYN, Ascii.SYN, Ascii.ETB, Ascii.SUB, Ascii.SUB, Ascii.DC4, 19, Ascii.SYN, Ascii.ETB, Ascii.SYN, Ascii.EM, Ascii.SUB, Ascii.SUB, Ascii.SUB, Ascii.ESC, Ascii.ESC, Ascii.SUB, Ascii.CAN, Ascii.EM, 19, Ascii.NAK, Ascii.SUB, Ascii.ESC, Ascii.ESC, Ascii.SUB, Ascii.ESC, Ascii.CAN, Ascii.NAK, Ascii.NAK, Ascii.SUB, Ascii.SUB, 28, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.DC4, Ascii.CAN, Ascii.DC4, Ascii.NAK, Ascii.SYN, Ascii.NAK, Ascii.NAK, Ascii.ETB, Ascii.SYN, Ascii.SYN, Ascii.EM, Ascii.EM, Ascii.CAN, Ascii.CAN, Ascii.SUB, Ascii.ETB, Ascii.SUB, Ascii.ESC, Ascii.SUB, Ascii.SUB, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.ESC, 28, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.ESC, Ascii.SUB};
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private static final Huffman INSTANCE = new Huffman();
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private final Node root = new Node();
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private Huffman() {
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buildTree();
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public void encode(byte[] bArr, OutputStream outputStream) throws IOException {
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long j = 0;
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int i = 0;
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for (byte b : bArr) {
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int i2 = b & UnsignedBytes.MAX_VALUE;
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int i3 = CODES[i2];
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byte b2 = CODE_LENGTHS[i2];
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j = (j << b2) | i3;
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i += b2;
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while (i >= 8) {
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i -= 8;
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outputStream.write((int) (j >> i));
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}
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}
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if (i > 0) {
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outputStream.write((int) ((j << (8 - i)) | (255 >>> i)));
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public int encodedLength(byte[] bArr) {
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long j = 0;
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for (byte b : bArr) {
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j += CODE_LENGTHS[b & UnsignedBytes.MAX_VALUE];
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}
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return (int) ((j + 7) >> 3);
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public byte[] decode(byte[] bArr) throws IOException {
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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Node node = this.root;
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int i = 0;
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int i2 = 0;
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for (byte b : bArr) {
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i2 = (i2 << 8) | (b & UnsignedBytes.MAX_VALUE);
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i += 8;
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while (i >= 8) {
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node = node.children[(i2 >>> (i - 8)) & 255];
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if (node.children == null) {
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byteArrayOutputStream.write(node.symbol);
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i -= node.terminalBits;
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node = this.root;
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} else {
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i -= 8;
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}
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}
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}
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while (i > 0) {
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Node node2 = node.children[(i2 << (8 - i)) & 255];
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if (node2.children != null || node2.terminalBits > i) {
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break;
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}
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byteArrayOutputStream.write(node2.symbol);
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i -= node2.terminalBits;
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node = this.root;
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}
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return byteArrayOutputStream.toByteArray();
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}
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private void buildTree() {
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int i = 0;
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while (true) {
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byte[] bArr = CODE_LENGTHS;
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if (i >= bArr.length) {
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return;
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}
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addCode(i, CODES[i], bArr[i]);
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i++;
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}
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}
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private void addCode(int i, int i2, byte b) {
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Node node = new Node(i, b);
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Node node2 = this.root;
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while (b > 8) {
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b = (byte) (b - 8);
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int i3 = (i2 >>> b) & 255;
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if (node2.children == null) {
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throw new IllegalStateException("invalid dictionary: prefix not unique");
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}
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if (node2.children[i3] == null) {
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node2.children[i3] = new Node();
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}
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node2 = node2.children[i3];
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}
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int i4 = 8 - b;
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int i5 = (i2 << i4) & 255;
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for (int i6 = i5; i6 < (1 << i4) + i5; i6++) {
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node2.children[i6] = node;
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes6.dex */
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public static final class Node {
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private final Node[] children;
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private final int symbol;
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private final int terminalBits;
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Node() {
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this.children = new Node[256];
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this.symbol = 0;
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this.terminalBits = 0;
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}
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Node(int i, int i2) {
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this.children = null;
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this.symbol = i;
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int i3 = i2 & 7;
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this.terminalBits = i3 == 0 ? 8 : i3;
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}
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}
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public static Huffman get() {
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return INSTANCE;
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}
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}
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