193 lines
4.7 KiB
C++
193 lines
4.7 KiB
C++
///////////////////////////////////////////////////////////////////////////
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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 Compressor
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//
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//-----------------------------------------------------------------------------
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#include <ImfCompressor.h>
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#include <ImfRleCompressor.h>
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#include <ImfZipCompressor.h>
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#include <ImfPizCompressor.h>
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#include <ImfPxr24Compressor.h>
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#include <ImfB44Compressor.h>
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#include <ImfCheckedArithmetic.h>
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namespace Imf {
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using Imath::Box2i;
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Compressor::Compressor (const Header &hdr): _header (hdr) {}
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Compressor::~Compressor () {}
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Compressor::Format
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Compressor::format () const
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{
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return XDR;
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}
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int
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Compressor::compressTile (const char *inPtr,
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int inSize,
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Box2i range,
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const char *&outPtr)
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{
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return compress (inPtr, inSize, range.min.y, outPtr);
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}
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int
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Compressor::uncompressTile (const char *inPtr,
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int inSize,
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Box2i range,
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const char *&outPtr)
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{
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return uncompress (inPtr, inSize, range.min.y, outPtr);
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}
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bool
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isValidCompression (Compression c)
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{
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switch (c)
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{
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case NO_COMPRESSION:
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case RLE_COMPRESSION:
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case ZIPS_COMPRESSION:
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case ZIP_COMPRESSION:
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case PIZ_COMPRESSION:
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case PXR24_COMPRESSION:
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case B44_COMPRESSION:
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case B44A_COMPRESSION:
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return true;
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default:
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return false;
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}
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}
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Compressor *
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newCompressor (Compression c, size_t maxScanLineSize, const Header &hdr)
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{
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switch (c)
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{
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case RLE_COMPRESSION:
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return new RleCompressor (hdr, maxScanLineSize);
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case ZIPS_COMPRESSION:
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return new ZipCompressor (hdr, maxScanLineSize, 1);
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case ZIP_COMPRESSION:
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return new ZipCompressor (hdr, maxScanLineSize, 16);
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case PIZ_COMPRESSION:
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return new PizCompressor (hdr, maxScanLineSize, 32);
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case PXR24_COMPRESSION:
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return new Pxr24Compressor (hdr, maxScanLineSize, 16);
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case B44_COMPRESSION:
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return new B44Compressor (hdr, maxScanLineSize, 32, false);
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case B44A_COMPRESSION:
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return new B44Compressor (hdr, maxScanLineSize, 32, true);
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default:
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return 0;
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}
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}
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Compressor *
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newTileCompressor (Compression c,
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size_t tileLineSize,
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size_t numTileLines,
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const Header &hdr)
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{
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switch (c)
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{
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case RLE_COMPRESSION:
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return new RleCompressor (hdr, uiMult (tileLineSize, numTileLines));
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case ZIPS_COMPRESSION:
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case ZIP_COMPRESSION:
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return new ZipCompressor (hdr, tileLineSize, numTileLines);
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case PIZ_COMPRESSION:
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return new PizCompressor (hdr, tileLineSize, numTileLines);
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case PXR24_COMPRESSION:
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return new Pxr24Compressor (hdr, tileLineSize, numTileLines);
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case B44_COMPRESSION:
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return new B44Compressor (hdr, tileLineSize, numTileLines, false);
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case B44A_COMPRESSION:
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return new B44Compressor (hdr, tileLineSize, numTileLines, true);
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default:
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return 0;
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}
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}
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} // namespace Imf
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