PBRT
/home/felix/UBC/projects/AdaptiveLightfieldSampling/pbrt_v2/src/3rdparty/openexr-1.7.0/ImfB44Compressor.h
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