// Matthias Ihmig, 2013
// see http://www.gnu.org/software/octave/doc/interpreter/Dynamically-Linked-Functions.html#Dynamically-Linked-Functions
// and http://wiki.octave.org/wiki.pl?CodaTutorial
// and http://octave.sourceforge.net/coda/c58.html
// compilation: see Makefile


#include <octave/oct.h>

extern "C" {
#include "openair0_lib.h"
}

#define FCNNAME "oarf_get_num_detected_cards"

#define TRACE 1


static bool any_bad_argument(const octave_value_list &args)
{
    octave_value v;
    if (args.length()!=0)
    {
        error(FCNNAME);
        error("syntax: oarf_get_num_detected_cards");
        return true;
    }

    return false;
}




DEFUN_DLD (oarf_get_num_detected_cards, args, nargout,"Returns number of detected cards.")
{

    if (any_bad_argument(args))
       return octave_value_list(); 
       
    int ret;

    octave_value returnvalue;

    ret = openair0_open();
    if ( ret != 0 )
    {
        error(FCNNAME);
        if (ret == -1)
            error("Error opening /dev/openair0");
        if (ret == -2)
            error("Error mapping bigshm");
        if (ret == -3)
            error("Error mapping RX or TX buffer");
        return octave_value(ret);
    }
    
    returnvalue = openair0_num_detected_cards;
    
    openair0_close( );

    return octave_value(returnvalue);
}