3 * Copyright 2007 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
27 #include <gr_message_vector_source.h>
28 #include <gr_io_signature.h>
31 #include <sys/types.h>
37 // public constructor that returns a shared_ptr
39 gr_message_vector_source_sptr
40 gr_make_message_vector_source(size_t max_msg_size, int msgq_limit)
42 return gr_message_vector_source_sptr(new gr_message_vector_source(max_msg_size,msgq_limit));
45 gr_message_vector_source::gr_message_vector_source (size_t max_msg_size, int msgq_limit)
46 : gr_sync_block("message_vector_source",
47 gr_make_io_signature(0, 0, 0),
48 gr_make_io_signature(1, 1, 2*sizeof(int) + max_msg_size * sizeof(char))), // Make room for length fields
49 d_max_msg_size(max_msg_size), d_msgq(gr_make_msg_queue(msgq_limit)), d_eof(false)
53 gr_message_vector_source::~gr_message_vector_source()
58 gr_message_vector_source::work(int noutput_items,
59 gr_vector_const_void_star &input_items,
60 gr_vector_void_star &output_items)
63 char *out = (char *) output_items[0];
68 gr_message_sptr msg = d_msgq->delete_head();
70 if (msg->type() == 1) { // type == 1 sets EOF
74 assert(msg->length() <= d_max_msg_size);
75 memset((int*)out, msg->length(), 1);
76 memcpy (&out[4], (msg->msg()), msg->length());
79 char *out = (char *) output_items[0];
80 gr_frame *myframe = (gr_frame*)out;
85 gr_message_sptr msg = d_msgq->delete_head();
87 if (msg->type() == 1) { // type == 1 sets EOF
91 assert(msg->length() <= d_max_msg_size);
92 myframe->length = msg->length();
93 myframe->mtu = d_max_msg_size;
94 memcpy (myframe->data, (msg->msg()), msg->length());