146 lines
3.2 KiB
C++
146 lines
3.2 KiB
C++
// ------------------------------------------------------------------------
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// jack-connections.cpp: Utility class to manage JACK port connections
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// Copyright (C) 2008 Kai Vehmanen
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//
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// Attributes:
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// eca-style-version: 3 (see Ecasound Programmer's Guide)
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// ------------------------------------------------------------------------
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <string>
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#include <iostream>
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#include <jack/jack.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <kvu_numtostr.h>
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#include "eca-logger.h"
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#include "jack-connections.h"
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using std::string;
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JACK_CONNECTIONS::JACK_CONNECTIONS(void)
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{
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}
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JACK_CONNECTIONS::~JACK_CONNECTIONS(void)
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{
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}
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static jack_client_t *priv_prepare(void)
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{
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int pid = getpid();
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std::string clntname = "libecasound-ctrl-" + kvu_numtostr(pid);
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jack_client_t *client = jack_client_new (clntname.c_str());
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return client;
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}
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static void priv_cleanup(jack_client_t *client)
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{
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jack_client_close(client);
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}
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bool JACK_CONNECTIONS::connect(const char* src, const char* dest)
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{
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int result = -1;
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jack_client_t *client = priv_prepare();
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if (client != 0) {
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result = jack_connect(client, src, dest);
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ECA_LOG_MSG(ECA_LOGGER::user_objects,
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std::string("Connected JACK ports ") +
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src +
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" and " +
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dest +
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" with result of " +
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kvu_numtostr(result));
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priv_cleanup(client);
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}
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return result == 0;
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}
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bool JACK_CONNECTIONS::disconnect(const char* src, const char* dest)
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{
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int result = -1;
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jack_client_t *client = priv_prepare();
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if (client != 0) {
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result = jack_disconnect(client, src, dest);
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ECA_LOG_MSG(ECA_LOGGER::user_objects,
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std::string("Connected JACK ports ") +
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src +
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" and " +
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dest +
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" with result of " +
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kvu_numtostr(result));
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priv_cleanup(client);
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}
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return result == 0;
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}
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bool JACK_CONNECTIONS::list_connections(std::string* output)
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{
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jack_client_t *client = priv_prepare();
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if (client != 0) {
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const char **next, **ports =
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jack_get_ports(client, NULL, NULL, 0);
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if (ports) {
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*output += "\n";
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for (next = ports; *next; next++) {
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jack_port_t *port;
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*output += string(*next);
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port = jack_port_by_name(client, *next);
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const char **nextconn, **conns =
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jack_port_get_all_connections(client, port);
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if (conns) {
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for(nextconn = conns; *nextconn; nextconn++) {
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*output += string("\n\t") + string(*nextconn) + string("\n");
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}
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free(conns);
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}
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else {
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*output += "\n";
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}
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}
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free(ports);
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}
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priv_cleanup(client);
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}
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return client != 0;
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}
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