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oscin.cc
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oscin.cc
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/*
* oscin.cc
*
* Copyright (C) 2016 Mikael Djurfeldt <[email protected]>
* and Gerhard Eckel <[email protected]>
*
* based on udpin.c by Mikael Djurfeldt
*
* music-osc 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 of the License, or
* (at your option) any later version.
*
* libneurosim 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, see <http://www.gnu.org/licenses/>.
*
*/
#include <mpi.h>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <unistd.h>
#include <stdexcept>
#include <music.hh>
#include "lo/lo.h"
// This is the expected time difference between incoming OSC messages
// as well as the MUSIC inter-tick-interval
#define TIMESTEP 0.001
// This is the modeled time delay. We maintain
// t == OSC timestamp + DELAY.
#define DELAY TIMESTEP
#if 0
typedef float real;
#define MPI_MYREAL MPI::FLOAT
#else
typedef double real;
#define MPI_MYREAL MPI::DOUBLE
#endif
void error(int num, const char *msg, const char *path)
{
fprintf(stderr, "oscin: liblo server error %d in path %s: %s\n", num, path, msg);
exit(1);
}
typedef struct {
lo_timetag timetag;
real timeStamp;
int msgCount;
int blobsize;
int datasize;
real *data;
} keystate_t;
int keystate_handler(const char *path, const char *types, lo_arg ** argv,
int argc, void *data, void *user_data)
{
keystate_t *keystate = (keystate_t*)user_data;
keystate->timetag = lo_message_get_timestamp((lo_message)data);
keystate->msgCount = argv[0]->i;
keystate->timeStamp = argv[1]->d;
keystate->blobsize = lo_blob_datasize((lo_blob)argv[2]);
char *blobdata = (char *)lo_blob_dataptr((lo_blob)argv[2]);
real *dest = keystate->data;
if (keystate->datasize != keystate->blobsize)
std::runtime_error ("udpin: data size missmatch");
for (int i = 0; i < keystate->blobsize; i++)
dest[i] = blobdata[i];
return 1;
}
int main (int argc, char* argv[]) {
MUSIC::Setup* setup = new MUSIC::Setup (argc, argv);
int width = atoi (argv[1]); // keystate vector width
char *host = argv[2]; // usually wand.pdc.kth.se
char *servport = argv[3]; // server listens on this port (usually 9931
char *scport = argv[4]; // port to which start message is sent
// usually SuperCollider OSC input port 57120
MUSIC::ContOutputPort* keydata = setup->publishContOutput ("out");
MPI::Intracomm comm = setup->communicator ();
int nProcesses = comm.Get_size (); // how many processes are there?
if (nProcesses > 1)
{
std::cout << "oscin: needs to run in a single MPI process\n";
exit (1);
}
real* data = new real[width];
for (int i = 0; i < width; ++i)
data[i] = 0.0;
// Declare what data we have to export
MUSIC::ArrayData dmap (data, MPI_MYREAL, 0, width);
keydata->map (&dmap, 1); // buffer only one tick
double stoptime;
setup->config ("stoptime", &stoptime);
lo_server server = lo_server_new(servport, error);
keystate_t keystate;
keystate.data = data;
keystate.datasize = width;
lo_server_add_method(server, "/keystate", "idb", keystate_handler, &keystate);
lo_address address = lo_address_new(NULL, scport); // is NULL here ok or do we need to get the IP here?
if (lo_send_from(address, server, LO_TT_IMMEDIATE, "/start", "ddd", 4711.0, TIMESTEP, stoptime) == -1) {
printf("oscin: OSC error %d: %s\n",
lo_address_errno(address), lo_address_errstr(address));
exit (1);
} else {
printf("oscin: start message sent\n");
}
MUSIC::Runtime* runtime = new MUSIC::Runtime (setup, TIMESTEP);
// Simulation loop
for (; runtime->time () < stoptime; runtime->tick ()) {
do {
if (lo_server_recv(server) == -1)
std::runtime_error ("oscin: lo_server_recv()");
} while (keystate.timeStamp + DELAY < runtime->time ());
}
runtime->finalize ();
delete runtime;
return 0;
}