PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // VMatAccessBuffer.h 00004 // 00005 // Copyright (C) 2006 Christian Dorion 00006 // 00007 // Redistribution and use in source and binary forms, with or without 00008 // modification, are permitted provided that the following conditions are met: 00009 // 00010 // 1. Redistributions of source code must retain the above copyright 00011 // notice, this list of conditions and the following disclaimer. 00012 // 00013 // 2. Redistributions in binary form must reproduce the above copyright 00014 // notice, this list of conditions and the following disclaimer in the 00015 // documentation and/or other materials provided with the distribution. 00016 // 00017 // 3. The name of the authors may not be used to endorse or promote 00018 // products derived from this software without specific prior written 00019 // permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 // 00032 // This file is part of the PLearn library. For more information on the PLearn 00033 // library, go to the PLearn Web site at www.plearn.org 00034 00035 // Authors: Christian Dorion 00036 00040 #ifndef VMatAccessBuffer_INC 00041 #define VMatAccessBuffer_INC 00042 00043 #include <deque> 00044 #include "VMat.h" 00045 00046 namespace PLearn { 00047 00051 class VMatAccessBuffer: public PPointable 00052 { 00053 public: 00054 VMatAccessBuffer(VMat source, int max_size=250); 00055 void getRow(int row, const Vec& rowbuf); 00056 void lookAhead(int row, const Vec& rowbuf); 00057 00059 VMatAccessBuffer* deepCopy(CopiesMap& copies) const; 00060 00061 private: 00062 VMat m_source; 00063 int m_current_row; 00064 int m_max_size; 00065 Vec m_row_buffer; 00066 deque<Vec> m_cached_rows; 00067 }; 00068 00069 00070 00071 } // end of namespace PLearn 00072 00073 #endif 00074 00075 00076 /* 00077 Local Variables: 00078 mode:c++ 00079 c-basic-offset:4 00080 c-file-style:"stroustrup" 00081 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00082 indent-tabs-mode:nil 00083 fill-column:79 00084 End: 00085 */ 00086 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :