| 1 | /** @file
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| 2 | * innotek Portable Runtime - CRC32.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2007 innotek GmbH
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License as published by the Free Software Foundation,
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| 12 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 13 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 14 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * If you received this file as part of a commercial VirtualBox
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| 17 | * distribution, then only the terms of your commercial VirtualBox
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| 18 | * license agreement apply instead of the previous paragraph.
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| 19 | */
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| 20 |
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| 21 | #ifndef __iprt_crc32_h__
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| 22 | #define __iprt_crc32_h__
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| 23 |
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| 24 |
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| 25 | #include <iprt/cdefs.h>
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| 26 | #include <iprt/types.h>
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| 27 |
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| 28 |
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| 29 | __BEGIN_DECLS
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| 30 |
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| 31 | /** @defgroup grp_rt_crc32 RTCrc32 - CRC32 Calculation
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| 32 | * @ingroup grp_rt
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| 33 | * @{
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| 34 | */
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| 35 |
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| 36 | /**
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| 37 | * Calculate CRC32 for a memory block.
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| 38 | *
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| 39 | * @returns CRC32 for the memory block.
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| 40 | * @param pv Pointer to the memory block.
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| 41 | * @param cb Size of the memory block in bytes.
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| 42 | */
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| 43 | RTDECL(uint32_t) RTCrc32(const void *pv, size_t cb);
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| 44 |
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| 45 | /**
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| 46 | * Start a multiblock CRC32 calculation.
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| 47 | *
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| 48 | * @returns Start CRC32.
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| 49 | */
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| 50 | RTDECL(uint32_t) RTCrc32Start(void);
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| 51 |
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| 52 | /**
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| 53 | * Processes a multiblock of a CRC32 calculation.
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| 54 | *
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| 55 | * @returns Intermediate CRC32 value.
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| 56 | * @param uCRC32 Current CRC32 intermediate value.
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| 57 | * @param pv The data block to process.
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| 58 | * @param cb The size of the data block in bytes.
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| 59 | */
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| 60 | RTDECL(uint32_t) RTCrc32Process(uint32_t uCRC32, const void *pv, size_t cb);
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| 61 |
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| 62 | /**
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| 63 | * Complete a multiblock CRC32 calculation.
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| 64 | *
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| 65 | * @returns CRC32 value.
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| 66 | * @param uCRC32 Current CRC32 intermediate value.
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| 67 | */
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| 68 | RTDECL(uint32_t) RTCrc32Finish(uint32_t uCRC32);
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| 69 |
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| 70 |
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| 71 |
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| 72 | /** @} */
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| 73 |
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| 74 | __END_DECLS
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| 75 |
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| 76 | #endif
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| 77 |
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