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Member "pfstools-2.2.0/src/octave/pfsread.cpp" (12 Aug 2021, 3441 Bytes) of package /linux/privat/pfstools-2.2.0.tgz:

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    1 /**
    2  * @brief GNU Octave wrapper - read selected channels from the PFS stream
    3  * 
    4  * This file is a part of PFSTOOLS package.
    5  * ---------------------------------------------------------------------- 
    6  * Copyright (C) 2003,2004 Rafal Mantiuk and Grzegorz Krawczyk
    7  * 
    8  *  This program is free software; you can redistribute it and/or modify
    9  *  it under the terms of the GNU General Public License as published by
   10  *  the Free Software Foundation; either version 2 of the License, or
   11  *  (at your option) any later version.
   12  *
   13  *  This program is distributed in the hope that it will be useful,
   14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   16  *  GNU General Public License for more details.
   17  *
   18  *  You should have received a copy of the GNU General Public License
   19  *  along with this program; if not, write to the Free Software
   20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   21  * ---------------------------------------------------------------------- 
   22  *
   23  * @author Rafal Mantiuk, <mantiuk@mpi-sb.mpg.de>
   24  *
   25  * $Id: pfsread.cpp,v 1.1 2005/06/15 13:36:54 rafm Exp $
   26  */
   27 
   28 #include <octave/oct.h>
   29 #include <octave/oct-stream.h>
   30 
   31 //#include <config.h>   // conflicts with config.h from octave distribution
   32 
   33 #include <string>
   34 
   35 #include <pfs.h>
   36 
   37 #define SCRIPT_NAME "pfsread"
   38 
   39 static const char *helpString =
   40 #include "pfsread_help.h"
   41 
   42 DEFUN_DLD( pfsread, args, , helpString)
   43 {
   44     octave_value_list retval;
   45     
   46     int nargin = args.length();
   47 
   48     if( nargin < 1 )
   49     {
   50         error( SCRIPT_NAME ": Improper usage!");
   51         return retval;
   52     }
   53 
   54     if( !args(0).is_string() ) {
   55       error( SCRIPT_NAME ": expected file name as the first argument!");
   56       return retval;
   57     }
   58 
   59     FILE *fh;
   60     const char *fileName = args(0).string_value().c_str();
   61     if( !strcasecmp( "stdin", fileName ) ) 
   62       fh = stdin;
   63     else {
   64       fh = fopen( fileName, "rb" );
   65       if( fh == NULL ) {
   66         error( SCRIPT_NAME ": cannot open file for reading!");
   67         return retval;
   68       }
   69     }
   70 
   71     try {
   72       
   73         pfs::DOMIO ctx;
   74         pfs::Frame *frame = ctx.readFrame( fh );
   75         if( frame == NULL ) {         // No more frames
   76             for( int i = 0; i < nargin; i++ )
   77                 retval(i) = std::string( "EOF" );
   78             return retval;      
   79         }
   80   
   81         for( int i = 1; i < nargin; i++ ) {
   82             if( !args(i).is_string() ) {
   83                 error( SCRIPT_NAME ": expected string argument!");
   84                 break;
   85             }
   86             const char *channelName = args(i).string_value().c_str();
   87             pfs::Channel *channel = frame->getChannel( channelName );
   88 
   89             if( channel == NULL ) {
   90                 error( SCRIPT_NAME ": channel not found!");
   91                 break;
   92             }
   93       
   94             Matrix mat( channel->getRows(), channel->getCols() );
   95             int index = 0;
   96             for( int r = 0; r < channel->getRows(); r++ ) // Copy channel data to Octave matrix
   97                 for( int c = 0; c < channel->getCols(); c++ ) {
   98                     mat(r,c) = (*channel)(index++);
   99                 }      
  100             retval(i-1) = mat;      
  101         }
  102   
  103         ctx.freeFrame( frame );
  104 
  105     }
  106     catch( pfs::Exception ex )
  107     {
  108         error( "%s: %s", SCRIPT_NAME, ex.getMessage() );
  109     }
  110 
  111     if( fh != stdin ) fclose( fh );    
  112     
  113     return retval;
  114 }