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/*
* dolmetschctl
*
*
* Copyright (C) 2015 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of dolmetschctl.
*
* dolmetschctl 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
* any later version.
*
* dolmetschctl 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 dolmetschctl. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <error.h>
#include <assert.h>
#include "osc.h"
static void print_error(int num, const char *msg, const char *path)
{
error(0, 0, "liblo server error %d in path %s: %s", num, path, msg);
}
static int lang_handler(const char *path, const char *types, lo_arg ** argv,
int argc, lo_message msg, void *user_data)
{
if(argc != 1 || !lo_is_string_type((lo_type)types[0]))
return 1;
lo_address from = lo_message_get_source(msg);
const char* host = lo_address_get_hostname(from);
const char* port = lo_address_get_port(from);
assert(host && port);
osc_t* o = (osc_t*)user_data;
assert(o);
osc_done_data_t* done_data = malloc(sizeof(osc_done_data_t));
assert(done_data);
done_data->self_ = o;
done_data->state_ = 0;
assert((done_data->lang_ = strdup(&(argv[0]->s))));
done_data->addr_ = lo_address_new(host, port);
assert(done_data->addr_);
done_data->msg_ = lo_message_new();
assert(done_data->msg_);
assert(!lo_message_add(done_data->msg_, "s", done_data->lang_));
assert(slist_add(&(o->done_data_), done_data));
return 0;
}
void free_osc_done_data(void* ptr)
{
osc_done_data_t* done_data = (osc_done_data_t*)ptr;
lo_message_free(done_data->msg_);
lo_address_free(done_data->addr_);
free(done_data->lang_);
free(done_data);
}
void osc_lang_switch_done(void* data)
{
assert(data);
osc_done_data_t* d = data;
lo_send_message_from(d->addr_, d->self_->server_, "/lang/ack", d->msg_);
slist_remove(&(d->self_->done_data_), d);
}
int osc_init(osc_t* o, const char* port)
{
assert(o != NULL);
o->server_ = lo_server_new(port, print_error);
if(!o->server_)
return -1;
if(!lo_server_add_method(o->server_, "/lang/switch", "s", lang_handler, (void*)o))
return -1;
slist_init(&(o->done_data_), free_osc_done_data);
return 0;
}
int osc_get_poll_fd_count(osc_t* o)
{
return 1;
}
int osc_get_poll_fds(osc_t* o, struct pollfd *pfds, int npfds)
{
assert(o && pfds && npfds == 1);
pfds[0].fd = lo_server_get_socket_fd(o->server_);
pfds[0].events = POLLIN;
pfds[0].revents = 0;
return 0;
}
int osc_handle_revents(osc_t* o, struct pollfd *pfds, int npfds, mixer_t* x)
{
assert(o && pfds && npfds == 1);
if(pfds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) {
error(0, 0, "OSC: got POLLERR, POLLHUP or POLLNVAL");
return -1;
}
if(!(pfds[0].revents & POLLIN))
return 0;
lo_server_recv_noblock(o->server_, 0);
int ret = 0;
slist_element_t* tmp;
for(tmp = o->done_data_.first_; tmp; tmp = tmp->next_) {
osc_done_data_t* d = (osc_done_data_t*)(tmp->data_);
if(d->state_ == 0) {
ret = mixer_switch_lang(x, d->lang_, &osc_lang_switch_done, d);
if(ret)
break;
d->state_ = 1;
}
}
return ret;
}
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