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/*
Copyright (C) 2009 Grame
This program 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 2 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <errno.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include <math.h>
#include <signal.h>
#include <getopt.h>
#include <string.h>
#include <assert.h>
#include <jack/net.h>
jack_net_master_t* net;
#define BUFFER_SIZE 512
#define SAMPLE_RATE 44100
static void signal_handler(int sig)
{
jack_net_master_close(net);
fprintf(stderr, "signal received, exiting ...\n");
exit(0);
}
static void
usage ()
{
fprintf (stderr, "\n"
"usage: jack_net_master \n"
" [ -b buffer size (default = %d) ]\n"
" [ -r sample rate (default = %d) ]\n"
" [ -a hostname (default = %s) ]\n"
" [ -p port (default = %d) ]\n", BUFFER_SIZE, SAMPLE_RATE, DEFAULT_MULTICAST_IP, DEFAULT_PORT);
}
int
main (int argc, char *argv[])
{
int buffer_size = BUFFER_SIZE;
int sample_rate = SAMPLE_RATE;
int udp_port = DEFAULT_PORT;
const char* multicast_ip = DEFAULT_MULTICAST_IP;
const char *options = "b:r:a:p:h";
int option_index;
int opt;
struct option long_options[] =
{
{"buffer size", 1, 0, 'b'},
{"sample rate", 1, 0, 'r'},
{"hostname", 1, 0, 'a'},
{"port", 1, 0, 'p'},
{0, 0, 0, 0}
};
while ((opt = getopt_long (argc, argv, options, long_options, &option_index)) != -1) {
switch (opt) {
case 'b':
buffer_size = atoi(optarg);
break;
case 'r':
sample_rate = atoi(optarg);
break;
case 'a':
multicast_ip = strdup(optarg);
break;
case 'p':
udp_port = atoi(optarg);
break;
case 'h':
usage();
return -1;
}
}
int i;
//jack_master_t request = { 4, 4, -1, -1, buffer_size, sample_rate, "master", -1 };
jack_master_t request = { -1, -1, -1, -1, buffer_size, sample_rate, "net_master", 6, true };
jack_slave_t result;
float** audio_input_buffer;
float** audio_output_buffer;
int wait_usec = (int) ((((float)buffer_size) * 1000000) / ((float)sample_rate));
printf("Waiting for a slave...\n");
if ((net = jack_net_master_open(multicast_ip, udp_port, &request, &result)) == 0) {
fprintf(stderr, "NetJack master can not be opened\n");
return 1;
}
printf("Slave is running...\n");
/* install a signal handler to properly quits jack client */
#ifdef WIN32
signal(SIGINT, signal_handler);
signal(SIGABRT, signal_handler);
signal(SIGTERM, signal_handler);
#else
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGINT, signal_handler);
#endif
// Allocate buffers
audio_input_buffer = (float**)calloc(result.audio_input, sizeof(float*));
for (i = 0; i < result.audio_input; i++) {
audio_input_buffer[i] = (float*)calloc(buffer_size, sizeof(float));
}
audio_output_buffer = (float**)calloc(result.audio_output, sizeof(float*));
for (i = 0; i < result.audio_output; i++) {
audio_output_buffer[i] = (float*)calloc(buffer_size, sizeof(float));
}
/*
Run until interrupted.
WARNING !! : this code is given for demonstration purpose. For proper timing bevahiour
it has to be called in a real-time context (which is *not* the case here...)
*/
//usleep(5*1000000);
printf("Wait...\n");
//sleep(10);
usleep(1000000);
printf("Wait...OK\n");
while (1) {
// Copy input to output
assert(result.audio_input == result.audio_output);
for (i = 0; i < result.audio_input; i++) {
memcpy(audio_output_buffer[i], audio_input_buffer[i], buffer_size * sizeof(float));
}
/*
if (jack_net_master_send(net, result.audio_output, audio_output_buffer, 0, NULL) < 0) {
printf("jack_net_master_send failure, exiting\n");
break;
}
usleep(10000);
if (jack_net_master_recv(net, result.audio_input, audio_input_buffer, 0, NULL) < 0) {
printf("jack_net_master_recv failure, exiting\n");
break;
}
*/
if (jack_net_master_send_slice(net, result.audio_output, audio_output_buffer, 0, NULL, BUFFER_SIZE/2) < 0) {
printf("jack_net_master_send failure, exiting\n");
break;
}
usleep(10000);
if (jack_net_master_recv_slice(net, result.audio_input, audio_input_buffer, 0, NULL, BUFFER_SIZE/2) < 0) {
printf("jack_net_master_recv failure, exiting\n");
break;
}
usleep(wait_usec);
};
// Wait for application end
jack_net_master_close(net);
for (i = 0; i < result.audio_input; i++) {
free(audio_input_buffer[i]);
}
free(audio_input_buffer);
for (i = 0; i < result.audio_output; i++) {
free(audio_output_buffer[i]);
}
free(audio_output_buffer);
exit (0);
}
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