iio_math_impl.h

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/* -*- c++ -*- */
/* 
 * Copyright 2016 Analog Devices Inc.
 * Author: Paul Cercueil <paul.cercueil@analog.com>
 * 
 * This is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 * 
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_GR_IIO_MATH_IMPL_H
#define INCLUDED_GR_IIO_MATH_IMPL_H

#include <vector>

#include <gnuradio/basic_block.h>
#include <iio/math.h>

extern "C" {
#include "parser.h"

int yyparse(yyscan_t scanner);
void *yy_scan_string(const char *str, yyscan_t scanner);
void yy_delete_buffer(void *buf, yyscan_t scanner);
}

namespace gr {
        namespace iio {
                class iio_math_impl : public iio_math
                {
                public:
                        iio_math_impl(const std::string &function, int ninputs);
                        ~iio_math_impl();

                        struct block;

                        void register_block(struct block *block);
                        void set_port_used(unsigned int port);
                        virtual gr::basic_block_sptr get_src_block();
                        virtual void connect_to_output(gr::basic_block_sptr block, unsigned int port = 0);

                private:
                        std::vector<struct block *> blocks;
                        std::vector<bool> connected_ports;

                        void connect_null_sinks();

                protected:
                        iio_math_impl() {}

                        int parse_function(const std::string &function);
                        void cleanup();
                };

                class iio_math_gen_impl : public iio_math_impl,
                                          public iio_math_gen
                {
                public:
                        iio_math_gen_impl(double sampling_freq, double wav_freq,
                                        const std::string &function);

                        virtual gr::basic_block_sptr get_src_block();
                        virtual void connect_to_output(gr::basic_block_sptr block, unsigned int port = 0);

                private:
                        gr::basic_block_sptr src_block;
                };
        }
}

#endif /* INCLUDED_GR_IIO_MATH_IMPL_H */