47 lines
2.1 KiB
C++
47 lines
2.1 KiB
C++
#pragma once
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/****************************************************************************
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Copyright (c) 2008, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "core/types.h"
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//------------------------------------------------------------------------------
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namespace Util
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{
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class RunLengthCodec
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{
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public:
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/// get a safe size for the destination buffer
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static SizeT GetSafeRLEBufferSize(SizeT srcBufferSize);
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/// compute the decoded byte size from an RLE encoded stream
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static SizeT ComputeDecodedSize(const uchar* srcPtr, SizeT srcNumBytes);
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/// encode byte buffer to RLE stream, returns size of RLE stream
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static SizeT Encode(const uchar* srcPtr, SizeT srcNumBytes, uchar* dstPtr, SizeT dstNumBytes);
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/// decode RLE stream to byte buffer
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static SizeT Decode(const uchar* srcPtr, SizeT srcNumBytes, uchar* dstPtr, SizeT dstNumBytes);
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};
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} // namespace Util
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//------------------------------------------------------------------------------
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