1 /////////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (c) 2002, 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 #ifndef INCLUDED_IMF_RLE_COMPRESSOR_H 38 #define INCLUDED_IMF_RLE_COMPRESSOR_H 39 40 //----------------------------------------------------------------------------- 41 // 42 // class RleCompressor -- performs run-length encoding 43 // 44 //----------------------------------------------------------------------------- 45 46 #include <ImfCompressor.h> 47 48 namespace Imf { 49 50 51 class RleCompressor: public Compressor 52 { 53 public: 54 55 RleCompressor (const Header &hdr, size_t maxScanLineSize); 56 virtual ~RleCompressor (); 57 58 virtual int numScanLines () const; 59 60 virtual int compress (const char *inPtr, 61 int inSize, 62 int minY, 63 const char *&outPtr); 64 65 virtual int uncompress (const char *inPtr, 66 int inSize, 67 int minY, 68 const char *&outPtr); 69 private: 70 71 int _maxScanLineSize; 72 char * _tmpBuffer; 73 char * _outBuffer; 74 }; 75 76 77 } // namespace Imf 78 79 #endif 80
