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/*
   Copyright (c) 2017 DIVIDE-Studio
   Copyright (c) 2009 Ionut Cava

   This file is part of DIVIDE Framework.

   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software
   and associated documentation files (the "Software"), to deal in the Software
   without restriction,
   including without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense,
   and/or sell copies of the Software, and to permit persons to whom the
   Software is furnished to do so,
   subject to the following conditions:

   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED,
   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
   PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
   DAMAGES OR OTHER LIABILITY,
   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
   IN CONNECTION WITH THE SOFTWARE
   OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

/*Code references:
    http://www.cplusplus.com/forum/lounge/27570/
*/
#ifndef UTIL_CRC_H_
#define UTIL_CRC_H_

#include "Platform/Headers/PlatformDataTypes.h"

namespace Divide {
namespace Util {
class CRC32 {
   public:
    //=========================================
    //  ctors
    inline CRC32() { Reset(); }
    inline CRC32(const void* buf, size_t siz) {
        Reset();
        Hash(buf, siz);
    }

    //=========================================
    /// implicit cast, so that you can do something like foo = CRC(dat,siz);
    inline operator U32() const { return Get(); }

    //=========================================
    /// getting the crc
    inline U32 Get() const { return ~mCrc; }

    //=========================================
    // HashBase stuff
    virtual void Reset() { mCrc = to_uint(~0); }
    virtual void Hash(const void* buf, size_t siz);

   private:
    U32 mCrc;
    static U32 mTable[0x100];

   private:
    //=========================================
    // internal support
    static U32 Reflect(U32 v, I32 bits);
};
};  // namespace Util
};  // namespace Divide

#endif

Commits for Divide-Framework/trunk/Source Code/Utility/Headers/CRC.h

Diff revisions: vs.
Revision Author Commited Message
836 Diff Diff IonutCava picture IonutCava Fri 27 Jan, 2017 14:59:56 +0000

[IonutCava]
- Update copyright notice

807 Diff Diff IonutCava picture IonutCava Mon 09 Jan, 2017 17:06:26 +0000

[IonutCava]
- Split PlatformDefines.h into 2. Move data type defines to PlatformDataTypes.h
- Continue to improve velocity map calculation
- Remove “destroy()” calls from most classes. Attempt to move as many classes to the RAII system.

648 Diff Diff IonutCava picture IonutCava Sun 21 Feb, 2016 16:32:52 +0000

[IonutCava]
- Update copyright notice
- Move BoundingBox and BoundingSphere to a new BoundsComponent
— Add a temp hack in SceneGraphNode to update these

540 Diff Diff IonutCava picture IonutCava Wed 28 Oct, 2015 19:06:28 +0000

[IonutCava]
- Remove the “Platform” folder from the Platform project as the name is redundant. Move files one level up

444 Diff Diff IonutCava picture IonutCava Thu 21 May, 2015 16:06:53 +0000

[Ionut]
- More platform independent code cleanup:
— Moved platform specific defines to their respective header files (e.g. THREAD_LOCAL)
— Moved most preprocessor defines from the VisualC++ projects into source code
— Removed compiler specific code (e.g. warning disables) and fixed most warning resulting from this

442 Diff Diff IonutCava picture IonutCava Wed 20 May, 2015 15:25:02 +0000

[Ionut]
- Better platform handling:
— All platform specific code moved in 3 separate files: PlatformDefinesWindows / PlatformDefinesUnix / PlatformDefinesApple
— Added CPU and RAM check at startup to make sure we meet minimum requirements to run properly
- Smart pointers should never used MemoryManager_NEW for allocating memory (MemoryManager_NEW tracks allocations but must be matched with a DELETE call in order to no report leaks). Corrected.
- Zombification of Singletons is only enabled in Debug builds
- Fixed a bug in Task.cpp (nowTime check) that prevented some tasks to run on the first call (changed a ‘>’ check to a ‘>=’)
— This also fixed bounding box computations for skinned submeshes
- Improved dead zone handling for joysticks

353 Diff Diff IonutCava picture IonutCava Tue 17 Feb, 2015 17:08:27 +0000

[Ionut]
- Compatibility updates for Boost 1.57 (some warnings still exist for now)
- Fixed some non-conforming code
- Added ALL OF THE MISSING FILES FROM THE LAST 15 commits ...........

350 Diff Diff IonutCava picture IonutCava Tue 10 Feb, 2015 16:25:39 +0000

[Ionut]
- Simplified some Util-namespace level functions by using STL algorithms where possible
- Formatted the entire codebase using clang-format with the following style: "{BasedOnStyle: Google, IndentWidth: 4}"
- Attempted to make ProfileTimer thread-safe (temp fix until std::chrono works properly in Visual Studio)

343 Diff Diff IonutCava picture IonutCava Thu 15 Jan, 2015 17:30:12 +0000

[Ionut]
- Refactored 2 singletons into static classes (Console and TerrainLoader)
- Changed some C-casts to static_casts
- Updated copyright notices

337 IonutCava picture IonutCava Wed 17 Dec, 2014 17:25:16 +0000

[Ionut]
- Replaced all tabs with 4 spaces (some spacing may be off now. no way to check all the files.)
- Moved implementation details for ParamHandler, BoundingBox, BoundingSphere and ProfileTimer to proper .inl and .cpp files. (more to follow)
- Update all forward declared enums with the required storage type (as requested by the C++11 standard)