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| author | Marco Cecchetti <marco.cecchetti@collabora.com> | 2015-08-27 22:57:15 +0200 |
|---|---|---|
| committer | Michael Meeks <michael.meeks@collabora.com> | 2015-09-01 16:28:46 +0100 |
| commit | 209951a8ae71ae38d57457a5a85005be8f46dcdf (patch) | |
| tree | 9bab49617fc392444cc74753d53312531cbe676f /include/vcl/checksum.hxx | |
| parent | b545728fddad2e70b6a38515b60455fc229e63af (diff) | |
switch to 64-bit checksum: conversion from BitmapChecksum to an octet array
Defined BitmapChecksumOctetArray which is an array of bytes whose size
is the same of BitmapChecksum.
Defined a routine for converting a BitmapChecksum into a
BitmapChecksumOctetArray.
Change-Id: I70d17ab8b841795ae27c60b418d6b090bff604bb
Diffstat (limited to 'include/vcl/checksum.hxx')
| -rw-r--r-- | include/vcl/checksum.hxx | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/include/vcl/checksum.hxx b/include/vcl/checksum.hxx index 2987fdae4cc0..83facefd6c9e 100644 --- a/include/vcl/checksum.hxx +++ b/include/vcl/checksum.hxx @@ -26,6 +26,11 @@ #include <sal/types.h> #include <tools/solar.h> +#include <boost/preprocessor/arithmetic/inc.hpp> +#include <boost/preprocessor/arithmetic/mul.hpp> +#include <boost/preprocessor/repetition/repeat_from_to.hpp> + + /*======================================================================== * * vcl_crc64Table (CRC polynomial 0x95AC9329AC4BC9B5ULL). @@ -120,9 +125,21 @@ static const sal_uInt64 vcl_crc64Table[256] = { 0x29b7d047efec8728ULL }; -typedef sal_uLong BitmapChecksum; +#define BITMAP_CHECKSUM_SIZE 4 +#define BITMAP_CHECKSUM_BITS BOOST_PP_MUL(BITMAP_CHECKSUM_SIZE, 8) + +typedef sal_uLong BitmapChecksum; + +typedef sal_uInt8 BitmapChecksumOctetArray[BITMAP_CHECKSUM_SIZE]; -#define BITMAP_CHECKSUM_BITS (sizeof(BitmapChecksum) * 8) +#define BITMAP_CHECKSUM_SET_OCTET(z, i, unused) \ +p[i] = (sal_uInt8)(n >> BOOST_PP_MUL(8, i)); + + +inline void BCToBCOA( BitmapChecksum n , BitmapChecksumOctetArray p ) +{ + BOOST_PP_REPEAT(BITMAP_CHECKSUM_SIZE , BITMAP_CHECKSUM_SET_OCTET, unused) +} #ifdef __cplusplus extern "C" { |