99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/* -*- c++ -*- */
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/*
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* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
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*
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* Copyright (C) 2019, Libre Space Foundation <http://libre.space>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gnuradio/io_signature.h>
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#include "frame_decoder_impl.h"
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namespace gr {
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namespace satnogs {
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frame_decoder::sptr
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frame_decoder::make(decoder::decoder_sptr decoder_object, int input_size)
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{
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return gnuradio::get_initial_sptr(new frame_decoder_impl(decoder_object,
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input_size));
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}
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/*
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* The private constructor
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*/
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frame_decoder_impl::frame_decoder_impl(decoder::decoder_sptr decoder_object,
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int input_size) :
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gr::sync_block("frame_decoder",
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gr::io_signature::make(1, 1, input_size),
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gr::io_signature::make(0, 0, 0)),
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d_decoder(decoder_object)
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{
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if (input_size != decoder_object->sizeof_input_item()) {
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throw std::invalid_argument(
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"frame_decoder: Size mismatch between the block input and the decoder");
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}
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/*
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* Each decoder implementing the generic decoder API may have special
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* requirements on the number of input items. If not, by default this will
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* set a multiple of 1 item, which corresponds to an arbitrary number of
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* samples
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*/
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set_output_multiple(d_decoder->input_multiple());
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message_port_register_in(pmt::mp("reset"));
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message_port_register_out(pmt::mp("out"));
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set_msg_handler(pmt::mp("reset"),
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boost::bind(&frame_decoder_impl::reset, this, _1));
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}
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/*
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* Our virtual destructor.
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*/
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frame_decoder_impl::~frame_decoder_impl()
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{
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}
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void
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frame_decoder_impl::reset(pmt::pmt_t m)
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{
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d_decoder->reset();
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}
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int
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frame_decoder_impl::work(int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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const void *in = input_items[0];
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decoder_status_t status = d_decoder->decode(in, noutput_items);
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if (status.decode_success) {
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message_port_pub(pmt::mp("out"), status.data);
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}
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// Tell runtime system how many output items we produced.
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return status.consumed;
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}
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} /* namespace satnogs */
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} /* namespace gr */
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