/////////////////////////////////////////////////////////////////////////// // // 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 <ImfCheckedArithmetic.h> namespace Imf { using Imath::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: 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); 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); default: return 0; } } } // namespace Imf