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00001 00002 // 00003 // Copyright (c) 2004, Industrial Light & Magic, a division of Lucas 00004 // Digital Ltd. LLC 00005 // 00006 // All rights reserved. 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are 00010 // met: 00011 // * Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // * Redistributions in binary form must reproduce the above 00014 // copyright notice, this list of conditions and the following disclaimer 00015 // in the documentation and/or other materials provided with the 00016 // distribution. 00017 // * Neither the name of Industrial Light & Magic nor the names of 00018 // its contributors may be used to endorse or promote products derived 00019 // from this software without specific prior written permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00034 00035 00036 #ifndef INCLUDED_IMF_PIZ_COMPRESSOR_H 00037 #define INCLUDED_IMF_PIZ_COMPRESSOR_H 00038 00039 //----------------------------------------------------------------------------- 00040 // 00041 // class PizCompressor -- uses Wavelet and Huffman encoding. 00042 // 00043 //----------------------------------------------------------------------------- 00044 00045 #include <ImfCompressor.h> 00046 00047 namespace Imf { 00048 00049 class ChannelList; 00050 00051 00052 class PizCompressor: public Compressor 00053 { 00054 public: 00055 00056 PizCompressor (const Header &hdr, 00057 size_t maxScanLineSize, 00058 size_t numScanLines); 00059 00060 virtual ~PizCompressor (); 00061 00062 virtual int numScanLines () const; 00063 00064 virtual Format format () const; 00065 00066 virtual int compress (const char *inPtr, 00067 int inSize, 00068 int minY, 00069 const char *&outPtr); 00070 00071 virtual int compressTile (const char *inPtr, 00072 int inSize, 00073 Imath::Box2i range, 00074 const char *&outPtr); 00075 00076 virtual int uncompress (const char *inPtr, 00077 int inSize, 00078 int minY, 00079 const char *&outPtr); 00080 00081 virtual int uncompressTile (const char *inPtr, 00082 int inSize, 00083 Imath::Box2i range, 00084 const char *&outPtr); 00085 private: 00086 00087 struct ChannelData; 00088 00089 int compress (const char *inPtr, 00090 int inSize, 00091 Imath::Box2i range, 00092 const char *&outPtr); 00093 00094 int uncompress (const char *inPtr, 00095 int inSize, 00096 Imath::Box2i range, 00097 const char *&outPtr); 00098 00099 int _maxScanLineSize; 00100 Format _format; 00101 int _numScanLines; 00102 unsigned short * _tmpBuffer; 00103 char * _outBuffer; 00104 int _numChans; 00105 const ChannelList & _channels; 00106 ChannelData * _channelData; 00107 int _minX; 00108 int _maxX; 00109 int _maxY; 00110 }; 00111 00112 00113 } // namespace Imf 00114 00115 #endif