128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
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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 <20>- 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 <20>- 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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