PBRT
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00001 00002 // 00003 // Copyright (c) 2006, 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_B44_COMPRESSOR_H 00037 #define INCLUDED_IMF_B44_COMPRESSOR_H 00038 00039 //----------------------------------------------------------------------------- 00040 // 00041 // class B44Compressor -- lossy compression of 4x4 pixel blocks 00042 // 00043 //----------------------------------------------------------------------------- 00044 00045 #include <ImfCompressor.h> 00046 00047 namespace Imf { 00048 00049 class ChannelList; 00050 00051 00052 class B44Compressor: public Compressor 00053 { 00054 public: 00055 00056 B44Compressor (const Header &hdr, 00057 size_t maxScanLineSize, 00058 size_t numScanLines, 00059 bool optFlatFields); 00060 00061 virtual ~B44Compressor (); 00062 00063 virtual int numScanLines () const; 00064 00065 virtual Format format () const; 00066 00067 virtual int compress (const char *inPtr, 00068 int inSize, 00069 int minY, 00070 const char *&outPtr); 00071 00072 virtual int compressTile (const char *inPtr, 00073 int inSize, 00074 Imath::Box2i range, 00075 const char *&outPtr); 00076 00077 virtual int uncompress (const char *inPtr, 00078 int inSize, 00079 int minY, 00080 const char *&outPtr); 00081 00082 virtual int uncompressTile (const char *inPtr, 00083 int inSize, 00084 Imath::Box2i range, 00085 const char *&outPtr); 00086 private: 00087 00088 struct ChannelData; 00089 00090 int compress (const char *inPtr, 00091 int inSize, 00092 Imath::Box2i range, 00093 const char *&outPtr); 00094 00095 int uncompress (const char *inPtr, 00096 int inSize, 00097 Imath::Box2i range, 00098 const char *&outPtr); 00099 00100 int _maxScanLineSize; 00101 bool _optFlatFields; 00102 Format _format; 00103 int _numScanLines; 00104 unsigned short * _tmpBuffer; 00105 char * _outBuffer; 00106 int _numChans; 00107 const ChannelList & _channels; 00108 ChannelData * _channelData; 00109 int _minX; 00110 int _maxX; 00111 int _maxY; 00112 }; 00113 00114 00115 } // namespace Imf 00116 00117 #endif