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

//

// Copyright (c) 2004, 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.

//

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

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

//

//	class Compressor

//

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

#include "ImfCompressor.h"

#include "ImfRleCompressor.h"

#include "ImfZipCompressor.h"

#include "ImfPizCompressor.h"

#include "ImfPxr24Compressor.h"

#include "ImfB44Compressor.h"

#include "ImfDwaCompressor.h"

#include "ImfCheckedArithmetic.h"

#include "ImfNamespace.h"

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER

using IMATH_NAMESPACE::Box2i;

Compressor::Compressor (const Header &hdr): _header (hdr) {}

Compressor::~Compressor () {}

Compressor::Format

Compressor::format () const

{

    return XDR;

}

int

Compressor::compressTile (const char *inPtr,

			  int inSize,

			  Box2i range,

			  const char *&outPtr)

{

    return compress (inPtr, inSize, range.min.y, outPtr);

}

int

Compressor::uncompressTile (const char *inPtr,

			    int inSize,

			    Box2i range,

			    const char *&outPtr)

{

    return uncompress (inPtr, inSize, range.min.y, outPtr);

}

bool	

isValidCompression (Compression c)

{

    switch (c)

    {

      case NO_COMPRESSION:

      case RLE_COMPRESSION:

      case ZIPS_COMPRESSION:

      case ZIP_COMPRESSION:

      case PIZ_COMPRESSION:

      case PXR24_COMPRESSION:

      case B44_COMPRESSION:

      case B44A_COMPRESSION:

      case DWAA_COMPRESSION:

      case DWAB_COMPRESSION:

	return true;

      default:

	return false;

    }

}

bool isValidDeepCompression(Compression c)

{

  switch(c)

  {

      case NO_COMPRESSION:

      case RLE_COMPRESSION:

      case ZIPS_COMPRESSION:

          return true;

      default :

          return false;

  }

}

Compressor *

newCompressor (Compression c, size_t maxScanLineSize, const Header &hdr)

{

    switch (c)

    {

      case RLE_COMPRESSION:

	return new RleCompressor (hdr, maxScanLineSize);

      case ZIPS_COMPRESSION:

	return new ZipCompressor (hdr, maxScanLineSize, 1);

      case ZIP_COMPRESSION:

	return new ZipCompressor (hdr, maxScanLineSize, 16);

      case PIZ_COMPRESSION:

	return new PizCompressor (hdr, maxScanLineSize, 32);

      case PXR24_COMPRESSION:

	return new Pxr24Compressor (hdr, maxScanLineSize, 16);

      case B44_COMPRESSION:

	return new B44Compressor (hdr, maxScanLineSize, 32, false);

      case B44A_COMPRESSION:

	return new B44Compressor (hdr, maxScanLineSize, 32, true);

      case DWAA_COMPRESSION:

	return new DwaCompressor (hdr, maxScanLineSize, 32, 

                               DwaCompressor::STATIC_HUFFMAN);

      case DWAB_COMPRESSION:

	return new DwaCompressor (hdr, maxScanLineSize, 256, 

                               DwaCompressor::STATIC_HUFFMAN);

      default:

	return 0;

    }

}

Compressor *

newTileCompressor (Compression c,

		   size_t tileLineSize,

		   size_t numTileLines,

		   const Header &hdr)

{

    switch (c)

    {

      case RLE_COMPRESSION:

	return new RleCompressor (hdr, uiMult (tileLineSize, numTileLines));

      case ZIPS_COMPRESSION:

      case ZIP_COMPRESSION:

	return new ZipCompressor (hdr, tileLineSize, numTileLines);

      case PIZ_COMPRESSION:

	return new PizCompressor (hdr, tileLineSize, numTileLines);

      case PXR24_COMPRESSION:

	return new Pxr24Compressor (hdr, tileLineSize, numTileLines);

      case B44_COMPRESSION:

	return new B44Compressor (hdr, tileLineSize, numTileLines, false);

      case B44A_COMPRESSION:

	return new B44Compressor (hdr, tileLineSize, numTileLines, true);

      case DWAA_COMPRESSION:

      case DWAB_COMPRESSION:

	return new DwaCompressor (hdr, tileLineSize, numTileLines, 

                               DwaCompressor::DEFLATE);

      default:

	return 0;

    }

}

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT