1/////////////////////////////////////////////////////////////////////////// 2// 3// Copyright (c) 2006, 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#ifndef INCLUDED_IMF_B44_COMPRESSOR_H 37#define INCLUDED_IMF_B44_COMPRESSOR_H 38 39//----------------------------------------------------------------------------- 40// 41// class B44Compressor -- lossy compression of 4x4 pixel blocks 42// 43//----------------------------------------------------------------------------- 44 45#include <ImfCompressor.h> 46 47namespace Imf { 48 49class ChannelList; 50 51 52class B44Compressor: public Compressor 53{ 54 public: 55 56 B44Compressor (const Header &hdr, 57 size_t maxScanLineSize, 58 size_t numScanLines, 59 bool optFlatFields); 60 61 virtual ~B44Compressor (); 62 63 virtual int numScanLines () const; 64 65 virtual Format format () const; 66 67 virtual int compress (const char *inPtr, 68 int inSize, 69 int minY, 70 const char *&outPtr); 71 72 virtual int compressTile (const char *inPtr, 73 int inSize, 74 Imath::Box2i range, 75 const char *&outPtr); 76 77 virtual int uncompress (const char *inPtr, 78 int inSize, 79 int minY, 80 const char *&outPtr); 81 82 virtual int uncompressTile (const char *inPtr, 83 int inSize, 84 Imath::Box2i range, 85 const char *&outPtr); 86 private: 87 88 struct ChannelData; 89 90 int compress (const char *inPtr, 91 int inSize, 92 Imath::Box2i range, 93 const char *&outPtr); 94 95 int uncompress (const char *inPtr, 96 int inSize, 97 Imath::Box2i range, 98 const char *&outPtr); 99 100 int _maxScanLineSize; 101 bool _optFlatFields; 102 Format _format; 103 int _numScanLines; 104 unsigned short * _tmpBuffer; 105 char * _outBuffer; 106 int _numChans; 107 const ChannelList & _channels; 108 ChannelData * _channelData; 109 int _minX; 110 int _maxX; 111 int _maxY; 112}; 113 114 115} // namespace Imf 116 117#endif 118