1/////////////////////////////////////////////////////////////////////////// 2// 3// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas 4// Digital Ltd. LLC 5// 6// All rights reserved. 7// 8// Redistribution and use in source and binary forms, with or without 9// modification, are permitted provided that the following conditions are 10// met: 11// * Redistributions of source code must retain the above copyright 12// notice, this list of conditions and the following disclaimer. 13// * Redistributions in binary form must reproduce the above 14// copyright notice, this list of conditions and the following disclaimer 15// in the documentation and/or other materials provided with the 16// distribution. 17// * Neither the name of Industrial Light & Magic nor the names of 18// its contributors may be used to endorse or promote products derived 19// from this software without specific prior written permission. 20// 21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32// 33/////////////////////////////////////////////////////////////////////////// 34 35 36 37//----------------------------------------------------------------------------- 38// 39// class Compressor 40// 41//----------------------------------------------------------------------------- 42 43#include <ImfCompressor.h> 44#include <ImfRleCompressor.h> 45#include <ImfZipCompressor.h> 46#include <ImfPizCompressor.h> 47#include <ImfPxr24Compressor.h> 48#include <ImfB44Compressor.h> 49 50namespace Imf { 51 52using Imath::Box2i; 53 54 55Compressor::Compressor (const Header &hdr): _header (hdr) {} 56 57 58Compressor::~Compressor () {} 59 60 61Compressor::Format 62Compressor::format () const 63{ 64 return XDR; 65} 66 67 68int 69Compressor::compressTile (const char *inPtr, 70 int inSize, 71 Box2i range, 72 const char *&outPtr) 73{ 74 return compress (inPtr, inSize, range.min.y, outPtr); 75} 76 77 78int 79Compressor::uncompressTile (const char *inPtr, 80 int inSize, 81 Box2i range, 82 const char *&outPtr) 83{ 84 return uncompress (inPtr, inSize, range.min.y, outPtr); 85} 86 87 88bool 89isValidCompression (Compression c) 90{ 91 switch (c) 92 { 93 case NO_COMPRESSION: 94 case RLE_COMPRESSION: 95 case ZIPS_COMPRESSION: 96 case ZIP_COMPRESSION: 97 case PIZ_COMPRESSION: 98 case PXR24_COMPRESSION: 99 case B44_COMPRESSION: 100 case B44A_COMPRESSION: 101 102 return true; 103 104 default: 105 106 return false; 107 } 108} 109 110 111Compressor * 112newCompressor (Compression c, int maxScanLineSize, const Header &hdr) 113{ 114 switch (c) 115 { 116 case RLE_COMPRESSION: 117 118 return new RleCompressor (hdr, maxScanLineSize); 119 120 case ZIPS_COMPRESSION: 121 122 return new ZipCompressor (hdr, maxScanLineSize, 1); 123 124 case ZIP_COMPRESSION: 125 126 return new ZipCompressor (hdr, maxScanLineSize, 16); 127 128 case PIZ_COMPRESSION: 129 130 return new PizCompressor (hdr, maxScanLineSize, 32); 131 132 case PXR24_COMPRESSION: 133 134 return new Pxr24Compressor (hdr, maxScanLineSize, 16); 135 136 case B44_COMPRESSION: 137 138 return new B44Compressor (hdr, maxScanLineSize, 32, false); 139 140 case B44A_COMPRESSION: 141 142 return new B44Compressor (hdr, maxScanLineSize, 32, true); 143 144 default: 145 146 return 0; 147 } 148} 149 150 151Compressor * 152newTileCompressor (Compression c, 153 int tileLineSize, 154 int numTileLines, 155 const Header &hdr) 156{ 157 switch (c) 158 { 159 case RLE_COMPRESSION: 160 161 return new RleCompressor (hdr, tileLineSize * numTileLines); 162 163 case ZIPS_COMPRESSION: 164 case ZIP_COMPRESSION: 165 166 return new ZipCompressor (hdr, tileLineSize, numTileLines); 167 168 case PIZ_COMPRESSION: 169 170 return new PizCompressor (hdr, tileLineSize, numTileLines); 171 172 case PXR24_COMPRESSION: 173 174 return new Pxr24Compressor (hdr, tileLineSize, numTileLines); 175 176 case B44_COMPRESSION: 177 178 return new B44Compressor (hdr, tileLineSize, numTileLines, false); 179 180 case B44A_COMPRESSION: 181 182 return new B44Compressor (hdr, tileLineSize, numTileLines, true); 183 184 default: 185 186 return 0; 187 } 188} 189 190 191} // namespace Imf 192