82 lines
2.9 KiB
C
82 lines
2.9 KiB
C
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_IMF_HUF_H
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#define INCLUDED_IMF_HUF_H
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#include "ImfExport.h"
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#include "ImfNamespace.h"
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//-----------------------------------------------------------------------------
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//
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// 16-bit Huffman compression and decompression:
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//
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// hufCompress (r, nr, c)
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//
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// Compresses the contents of array r (of length nr),
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// stores the compressed data in array c, and returns
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// the size of the compressed data (in bytes).
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//
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// To avoid buffer overflows, the size of array c should
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// be at least 2 * nr + 65536.
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//
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// hufUncompress (c, nc, r, nr)
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//
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// Uncompresses the data in array c (with length nc),
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// and stores the results in array r (with length nr).
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//
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//-----------------------------------------------------------------------------
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
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IMF_EXPORT
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int
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hufCompress (const unsigned short raw[/*nRaw*/],
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int nRaw,
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char compressed[/*2 * nRaw + 65536*/]);
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IMF_EXPORT
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void
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hufUncompress (const char compressed[/*nCompressed*/],
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int nCompressed,
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unsigned short raw[/*nRaw*/],
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int nRaw);
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
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#endif
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