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ImfHuf.h

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
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// *       Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
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// distribution.
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// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission. 
// 
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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

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