source: NonGTP/OpenEXR/include/IlmImf/ImfHuf.h @ 855

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
// 
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// modification, are permitted provided that the following conditions are
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///////////////////////////////////////////////////////////////////////////



#ifndef INCLUDED_IMF_HUF_H
#define INCLUDED_IMF_HUF_H


//-----------------------------------------------------------------------------
//
//      16-bit Huffman compression and decompression:
//
//      hufCompress (r, nr, c)
//
//              Compresses the contents of array r (of length nr),
//              stores the compressed data in array c, and returns
//              the size of the compressed data (in bytes).
//
//              To avoid buffer overflows, the size of array c should
//              be at least 2 * nr + 65536.
//
//      hufUncompress (c, nc, r, nr)
//
//              Uncompresses the data in array c (with length nc),
//              and stores the results in array r (with length nr).
//
//-----------------------------------------------------------------------------

namespace Imf {


int
hufCompress (const unsigned short raw[/*nRaw*/],
             int nRaw,
             char compressed[/*2 * nRaw + 65536*/]);


void
hufUncompress (const char compressed[/*nCompressed*/],
               int nCompressed,
               unsigned short raw[/*nRaw*/],
               int nRaw);


} // namespace Imf

#endif