[geodb] Adding sparkey dependency

src/sparkey/hashalgorithms.h

@@ -0,0 +1,29 @@
+/*
+* Copyright (c) 2012-2013 Spotify AB
+*
+* Licensed under the Apache License, Version 2.0 (the "License"); you may not
+* use this file except in compliance with the License. You may obtain a copy of
+* the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+* License for the specific language governing permissions and limitations under
+* the License.
+*/
+#ifndef SPARKEY_HASHALGORITHM_H_INCLUDED
+#define SPARKEY_HASHALGORITHM_H_INCLUDED
+
+#include "endiantools.h"
+
+typedef struct {
+  uint64_t (*hash)(const uint8_t *data, uint64_t len, uint32_t seed);
+  uint64_t (*read_hash)(const uint8_t *data, uint64_t pos);
+  void (*write_hash)(uint8_t *data, uint64_t hash);
+} sparkey_hash_algorithm;
+
+sparkey_hash_algorithm sparkey_get_hash_algorithm(uint32_t hash_size);
+
+#endif