Diff: crc.h

Revision:

11:dedcebcfc869

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crc.h	Fri Dec 19 09:03:46 2014 +0100
@@ -0,0 +1,46 @@
+/*
+ *  Copyright 2014 Embedded Artists 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 __CRC_H
+#define __CRC_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+/** Calculates the CRC32 checksum on the contents of the file
+ *
+ *  Note that the position in the file will change as a result of this
+ *  call. To get the old position back, use fseek().
+ *
+ *  @param f   An open file
+ *
+ *  @returns
+ *       checksum on success
+ *       0 on failure
+ */
+uint32_t crc_File(FILE* f);
+
+/** Calculates the CRC32 checksum on the data
+ *
+ *  @param data   the data
+ *  @param size   the number of elements in the data array
+ *
+ *  @returns
+ *       checksum
+ */
+uint32_t crc_Buffer(const uint32_t* data, uint32_t size);
+
+#endif /* end __CRC_H */