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101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The libLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the libLTE library.
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*
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* libLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libLTE 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 Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include "lte/io/udpsource.h"
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int udpsource_init(udpsource_t *q, char *address, int port, data_type_t type) {
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bzero(q, sizeof(udpsource_t));
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q->sockfd=socket(AF_INET,SOCK_DGRAM,0);
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q->servaddr.sin_family = AF_INET;
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q->servaddr.sin_addr.s_addr=inet_addr(address);
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q->servaddr.sin_port=htons(port);
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bind(q->sockfd,(struct sockaddr *)&q->servaddr,sizeof(struct sockaddr_in));
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q->type = type;
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return 0;
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}
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void udpsource_free(udpsource_t *q) {
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if (q->sockfd) {
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close(q->sockfd);
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}
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bzero(q, sizeof(udpsource_t));
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}
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int udpsource_read(udpsource_t *q, void *buffer, int nsamples) {
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int size;
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switch(q->type) {
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case FLOAT:
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case COMPLEX_FLOAT:
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case COMPLEX_SHORT:
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fprintf(stderr, "Not implemented\n");
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return -1;
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case FLOAT_BIN:
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case COMPLEX_FLOAT_BIN:
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case COMPLEX_SHORT_BIN:
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if (q->type == FLOAT_BIN) {
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size = sizeof(float);
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} else if (q->type == COMPLEX_FLOAT_BIN) {
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size = sizeof(_Complex float);
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} else if (q->type == COMPLEX_SHORT_BIN) {
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size = sizeof(_Complex short);
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}
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return recv(q->sockfd, buffer, size * nsamples, 0);
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break;
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}
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return -1;
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}
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int udpsource_initialize(udpsource_hl* h) {
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return udpsource_init(&h->obj, h->init.address, h->init.port, h->init.data_type);
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}
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int udpsource_work(udpsource_hl* h) {
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h->out_len = udpsource_read(&h->obj, h->output, h->ctrl_in.nsamples);
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if (h->out_len < 0) {
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return -1;
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}
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return 0;
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}
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int udpsource_stop(udpsource_hl* h) {
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udpsource_free(&h->obj);
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return 0;
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}
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