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/////////////////////////////////////////////////////////////////////////// |
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// |
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// Copyright (c) 2004, 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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//----------------------------------------------------------------------------- |
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// |
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// class ZipCompressor |
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// |
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//----------------------------------------------------------------------------- |
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#include "ImfZipCompressor.h" |
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#include "ImfCheckedArithmetic.h" |
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#include "Iex.h" |
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#include <zlib.h> |
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#include "ImfNamespace.h" |
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER |
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ZipCompressor::ZipCompressor |
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(const Header &hdr, |
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size_t maxScanLineSize, |
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size_t numScanLines) |
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: |
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Compressor (hdr), |
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_maxScanLineSize (maxScanLineSize), |
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_numScanLines (numScanLines), |
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_outBuffer (0), |
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_zip(maxScanLineSize, numScanLines) |
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{ |
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_outBuffer = new char[_zip.maxCompressedSize()]; |
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} |
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ZipCompressor::~ZipCompressor () |
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{ |
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delete [] _outBuffer; |
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} |
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int |
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ZipCompressor::numScanLines () const |
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{ |
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return _numScanLines; |
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} |
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int |
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ZipCompressor::compress (const char *inPtr, |
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int inSize, |
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int minY, |
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const char *&outPtr) |
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{ |
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// |
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// Special case <EFBFBD>- empty input buffer |
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// |
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if (inSize == 0) |
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{ |
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outPtr = _outBuffer; |
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return 0; |
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} |
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int outSize = _zip.compress(inPtr, inSize, _outBuffer); |
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outPtr = _outBuffer; |
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return outSize; |
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} |
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int |
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ZipCompressor::uncompress (const char *inPtr, |
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int inSize, |
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int minY, |
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const char *&outPtr) |
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{ |
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// |
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// Special case <EFBFBD>- empty input buffer |
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// |
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if (inSize == 0) |
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{ |
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outPtr = _outBuffer; |
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return 0; |
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} |
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int outSize = _zip.uncompress(inPtr, inSize, _outBuffer); |
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outPtr = _outBuffer; |
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return outSize; |
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} |
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT |
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