///////////////////////////////////////////////////////////////////////////

//

// 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

// met:

// *       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

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// *       Neither the name of Industrial Light & Magic nor the names of

// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission. 

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

///////////////////////////////////////////////////////////////////////////

#ifndef INCLUDED_IMF_HUF_H

#define INCLUDED_IMF_HUF_H

#include "ImfExport.h"

#include "ImfNamespace.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).

//

//-----------------------------------------------------------------------------

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER

IMF_EXPORT 

int

hufCompress (const unsigned short raw[/*nRaw*/],

	     int nRaw,

	     char compressed[/*2 * nRaw + 65536*/]);

IMF_EXPORT

void

hufUncompress (const char compressed[/*nCompressed*/],

	       int nCompressed,

	       unsigned short raw[/*nRaw*/],

	       int nRaw);

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT

#endif