[Android] Remove dead code
Geoffrey Métais
git at videolan.org
Mon Mar 16 07:29:13 CET 2020
vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Fri Mar 13 16:27:26 2020 +0100| [ef2fcd088ad29a108b824a7405f9062dcca23bdc] | committer: Nicolas Pomepuy
Remove dead code
> https://code.videolan.org/videolan/vlc-android/commit/ef2fcd088ad29a108b824a7405f9062dcca23bdc
---
.../main/java/org/videolan/tools/MurmurHash.java | 206 ---------------------
1 file changed, 206 deletions(-)
diff --git a/application/tools/src/main/java/org/videolan/tools/MurmurHash.java b/application/tools/src/main/java/org/videolan/tools/MurmurHash.java
deleted file mode 100644
index 911de92a2..000000000
--- a/application/tools/src/main/java/org/videolan/tools/MurmurHash.java
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * ************************************************************************
- * MurmurHash.java
- * *************************************************************************
- * Copyright © 2020 VLC authors and VideoLAN
- * Author: Nicolas POMEPUY
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- * **************************************************************************
- *
- *
- */
-
-package org.videolan.tools;
-
-/** Murmur hash 2.0.
- *
- * The murmur hash is a relative fast hash function from
- * http://murmurhash.googlepages.com/ for platforms with efficient
- * multiplication.
- *
- * This is a re-implementation of the original C code plus some
- * additional features.
- *
- * Public domain.
- *
- * @author Viliam Holub
- * @version 1.0.2
- *
- */
-public final class MurmurHash {
-
- /** Generates 32 bit hash from byte array of the given length and
- * seed.
- *
- * @param data byte array to hash
- * @param length length of the array to hash
- * @param seed initial seed value
- * @return 32 bit hash of the given array
- */
- public static int hash32(final byte[] data, int length, int seed) {
- // 'm' and 'r' are mixing constants generated offline.
- // They're not really 'magic', they just happen to work well.
- final int m = 0x5bd1e995;
- final int r = 24;
- // Initialize the hash to a random value
- int h = seed ^ length;
- int length4 = length / 4;
-
- for (int i = 0; i < length4; i++) {
- final int i4 = i * 4;
- int k = (data[i4 + 0] & 0xff) + ((data[i4 + 1] & 0xff) << 8)
- + ((data[i4 + 2] & 0xff) << 16) + ((data[i4 + 3] & 0xff) << 24);
- k *= m;
- k ^= k >>> r;
- k *= m;
- h *= m;
- h ^= k;
- }
-
- // Handle the last few bytes of the input array
- switch (length % 4) {
- case 3:
- h ^= (data[(length & ~3) + 2] & 0xff) << 16;
- case 2:
- h ^= (data[(length & ~3) + 1] & 0xff) << 8;
- case 1:
- h ^= (data[length & ~3] & 0xff);
- h *= m;
- }
-
- h ^= h >>> 13;
- h *= m;
- h ^= h >>> 15;
-
- return h;
- }
-
- /** Generates 32 bit hash from byte array with default seed value.
- *
- * @param data byte array to hash
- * @param length length of the array to hash
- * @return 32 bit hash of the given array
- */
- public static int hash32(final byte[] data, int length) {
- return hash32(data, length, 0x9747b28c);
- }
-
- /** Generates 32 bit hash from a string.
- *
- * @param text string to hash
- * @return 32 bit hash of the given string
- */
- public static int hash32(final String text) {
- final byte[] bytes = text.getBytes();
- return hash32(bytes, bytes.length);
- }
-
- /** Generates 32 bit hash from a substring.
- *
- * @param text string to hash
- * @param from starting index
- * @param length length of the substring to hash
- * @return 32 bit hash of the given string
- */
- public static int hash32(final String text, int from, int length) {
- return hash32(text.substring(from, from + length));
- }
-
- /** Generates 64 bit hash from byte array of the given length and seed.
- *
- * @param data byte array to hash
- * @param length length of the array to hash
- * @param seed initial seed value
- * @return 64 bit hash of the given array
- */
- public static long hash64(final byte[] data, int length, int seed) {
- final long m = 0xc6a4a7935bd1e995L;
- final int r = 47;
-
- long h = (seed & 0xffffffffl) ^ (length * m);
-
- int length8 = length / 8;
-
- for (int i = 0; i < length8; i++) {
- final int i8 = i * 8;
- long k = ((long) data[i8 + 0] & 0xff) + (((long) data[i8 + 1] & 0xff) << 8)
- + (((long) data[i8 + 2] & 0xff) << 16) + (((long) data[i8 + 3] & 0xff) << 24)
- + (((long) data[i8 + 4] & 0xff) << 32) + (((long) data[i8 + 5] & 0xff) << 40)
- + (((long) data[i8 + 6] & 0xff) << 48) + (((long) data[i8 + 7] & 0xff) << 56);
-
- k *= m;
- k ^= k >>> r;
- k *= m;
-
- h ^= k;
- h *= m;
- }
-
- switch (length % 8) {
- case 7:
- h ^= (long) (data[(length & ~7) + 6] & 0xff) << 48;
- case 6:
- h ^= (long) (data[(length & ~7) + 5] & 0xff) << 40;
- case 5:
- h ^= (long) (data[(length & ~7) + 4] & 0xff) << 32;
- case 4:
- h ^= (long) (data[(length & ~7) + 3] & 0xff) << 24;
- case 3:
- h ^= (long) (data[(length & ~7) + 2] & 0xff) << 16;
- case 2:
- h ^= (long) (data[(length & ~7) + 1] & 0xff) << 8;
- case 1:
- h ^= (long) (data[length & ~7] & 0xff);
- h *= m;
- }
-
- h ^= h >>> r;
- h *= m;
- h ^= h >>> r;
-
- return h;
- }
-
- /** Generates 64 bit hash from byte array with default seed value.
- *
- * @param data byte array to hash
- * @param length length of the array to hash
- * @return 64 bit hash of the given string
- */
- public static long hash64(final byte[] data, int length) {
- return hash64(data, length, 0xe17a1465);
- }
-
- /** Generates 64 bit hash from a string.
- *
- * @param text string to hash
- * @return 64 bit hash of the given string
- */
- public static long hash64(final String text) {
- final byte[] bytes = text.getBytes();
- return hash64(bytes, bytes.length);
- }
-
- /** Generates 64 bit hash from a substring.
- *
- * @param text string to hash
- * @param from starting index
- * @param length length of the substring to hash
- * @return 64 bit hash of the given array
- */
- public static long hash64(final String text, int from, int length) {
- return hash64(text.substring(from, from + length));
- }
-}
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