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