/* -*- c++ -*- */
/*
 * Copyright 2006,2009,2013 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio 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.
 *
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "copy_impl.h"
#include <gnuradio/io_signature.h>
#include <string.h>

namespace gr {
namespace blocks {

copy::sptr copy::make(size_t itemsize)
{
    return gnuradio::get_initial_sptr(new copy_impl(itemsize));
}

copy_impl::copy_impl(size_t itemsize)
    : block("copy",
            io_signature::make(1, -1, itemsize),
            io_signature::make(1, -1, itemsize)),
      d_itemsize(itemsize),
      d_enabled(true)
{
    message_port_register_in(pmt::mp("en"));
    set_msg_handler(pmt::mp("en"), boost::bind(&copy_impl::handle_enable, this, _1));
}

copy_impl::~copy_impl() {}

void copy_impl::handle_enable(pmt::pmt_t msg)
{
    if (pmt::is_bool(msg)) {
        bool en = pmt::to_bool(msg);
        d_enabled = en;
    }
}

void copy_impl::forecast(int noutput_items, gr_vector_int& ninput_items_required)
{
    unsigned ninputs = ninput_items_required.size();
    for (unsigned i = 0; i < ninputs; i++)
        ninput_items_required[i] = noutput_items;
}

bool copy_impl::check_topology(int ninputs, int noutputs) { return ninputs == noutputs; }

int copy_impl::general_work(int noutput_items,
                            gr_vector_int& ninput_items,
                            gr_vector_const_void_star& input_items,
                            gr_vector_void_star& output_items)
{
    const uint8_t** in = (const uint8_t**)&input_items[0];
    uint8_t** out = (uint8_t**)&output_items[0];

    int n = 0;
    if (d_enabled) {
        int ninputs = input_items.size();
        for (int i = 0; i < ninputs; i++) {
            memcpy(out[i], in[i], noutput_items * d_itemsize);
        }
        n = noutput_items;
    }

    consume_each(noutput_items);
    return n;
}


void copy_impl::setup_rpc()
{
#ifdef GR_CTRLPORT
    add_rpc_variable(rpcbasic_sptr(new rpcbasic_register_handler<copy>(
        alias(), "en", "", "Enable", RPC_PRIVLVL_MIN, DISPNULL)));
#endif /* GR_CTRLPORT */
}

} /* namespace blocks */
} /* namespace gr */
