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diff --git a/arts/midi/alsamidigateway_impl.cc b/arts/midi/alsamidigateway_impl.cc
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+ /*
+
+ Copyright (C) 2001-2002 Stefan Westerfeld
+ stefan@space.twc.de
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+ */
+
+#include "artsmidi.h"
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/**
+ * compile real version if we have ALSA support, dummy version otherwise
+ */
+#if defined(HAVE_ARTS_LIBASOUND2) || defined(HAVE_ARTS_LIBASOUND)
+
+#ifdef HAVE_ALSA_ASOUNDLIB_H
+#include <alsa/asoundlib.h>
+#elif defined(HAVE_SYS_ASOUNDLIB_H)
+#include <sys/asoundlib.h>
+#endif
+
+#include "alsamidiport_impl.h"
+#include <arts/debug.h>
+#include <stdio.h>
+
+using namespace Arts;
+using namespace std;
+
+class AlsaMidiGateway_impl : virtual public AlsaMidiGateway_skel {
+protected:
+ snd_seq_t *seq;
+
+ struct PortEntry {
+ int alsaClient, alsaPort;
+ bool keep;
+
+ AlsaMidiPort port;
+ MidiClient client;
+ };
+ list<PortEntry> ports;
+
+#ifdef HAVE_ARTS_LIBASOUND2
+/* ALSA-0.9 specific code */
+ int alsaOpen() {
+ return snd_seq_open(&seq, "hw", SND_SEQ_OPEN_DUPLEX, 0);
+ }
+ bool alsaScan(MidiManager midiManager) {
+ snd_seq_client_info_t *cinfo;
+ snd_seq_port_info_t *pinfo;
+
+ snd_seq_client_info_alloca(&cinfo);
+ snd_seq_client_info_set_client(cinfo, -1);
+
+ while (snd_seq_query_next_client(seq, cinfo) >= 0) {
+ int client = snd_seq_client_info_get_client(cinfo);
+
+ snd_seq_port_info_alloca(&pinfo);
+ snd_seq_port_info_set_client(pinfo, client);
+
+ snd_seq_port_info_set_port(pinfo, -1);
+ while (snd_seq_query_next_port(seq, pinfo) >= 0) {
+ unsigned int cap;
+
+ cap = (SND_SEQ_PORT_CAP_SUBS_WRITE|SND_SEQ_PORT_CAP_WRITE);
+ if ((snd_seq_port_info_get_capability(pinfo) & cap) == cap) {
+ string name = snd_seq_port_info_get_name(pinfo);
+ int client = snd_seq_port_info_get_client(pinfo);
+ int port = snd_seq_port_info_get_port(pinfo);
+
+ createPort(midiManager, name, client, port);
+ }
+ }
+ }
+
+ return true;
+ }
+#else
+/* ALSA-0.5 specific code */
+ int alsaOpen() {
+ return snd_seq_open(&seq, SND_SEQ_OPEN);
+ }
+
+ bool alsaScan(MidiManager midiManager) {
+ snd_seq_system_info_t sysinfo;
+
+ int err = snd_seq_system_info(seq, &sysinfo);
+ if (err < 0)
+ {
+ arts_warning("snd_seq_systeminfo failed: %s", snd_strerror(err));
+ return false;
+ }
+
+ for(int client = 0; client < sysinfo.clients; client++)
+ {
+ snd_seq_client_info_t cinfo;
+ if (snd_seq_get_any_client_info(seq, client, &cinfo) == 0)
+ {
+ for(int port = 0; port < sysinfo.ports; port++)
+ {
+ snd_seq_port_info_t pinfo;
+ if(snd_seq_get_any_port_info(seq, client, port, &pinfo) == 0)
+ {
+ unsigned int cap;
+ cap = (SND_SEQ_PORT_CAP_SUBS_WRITE|SND_SEQ_PORT_CAP_WRITE);
+
+ if ((pinfo.capability & cap) == cap)
+ createPort(midiManager, pinfo.name, client, port);
+ }
+ }
+ }
+ }
+
+ return true;
+ }
+#endif
+
+public:
+ AlsaMidiGateway_impl() : seq(0)
+ {
+ }
+
+ ~AlsaMidiGateway_impl()
+ {
+ if(seq)
+ snd_seq_close(seq);
+ }
+
+ void createPort(MidiManager midiManager, string name, int client, int port)
+ {
+ if(name != "aRts")
+ {
+ char nr[1024];
+
+ sprintf(nr, " (%3d:%-3d)", client, port);
+ name += nr;
+
+ list<PortEntry>::iterator pi = ports.begin();
+ while(pi != ports.end() && (pi->alsaClient != client || pi->alsaPort != port))
+ pi++;
+
+ if(pi != ports.end()) /* we already have this port */
+ pi->keep = true;
+ else /* we need to create it */
+ {
+ PortEntry pe;
+ pe.port = AlsaMidiPort::_from_base(
+ new AlsaMidiPort_impl(seq, client, port));
+
+ if(pe.port.open())
+ {
+ pe.client = midiManager.addClient(mcdRecord,
+ mctDestination,
+ name, name);
+ pe.client.addInputPort(pe.port);
+ pe.alsaClient = client;
+ pe.alsaPort = port;
+ pe.keep = true;
+
+ ports.push_back(pe);
+ }
+ }
+ }
+ }
+
+ bool rescan()
+ {
+ MidiManager midiManager = DynamicCast(Reference("global:Arts_MidiManager"));
+ if(midiManager.isNull())
+ {
+ arts_warning("AlsaMidiGateway: can't find MidiManager");
+ return false;
+ }
+
+ if(!seq)
+ {
+ int err = alsaOpen();
+ if (err < 0)
+ {
+ arts_warning("AlsaMidiGateway: could not open sequencer %s",
+ snd_strerror(err));
+ seq = 0;
+ return false;
+ }
+ }
+
+ list<PortEntry>::iterator pi;
+ for(pi = ports.begin(); pi != ports.end(); pi++)
+ pi->keep = false;
+
+ if(!alsaScan(midiManager))
+ return false;
+
+ /* erase those ports that are no longer needed */
+ pi = ports.begin();
+ while(pi != ports.end())
+ {
+ if(!pi->keep)
+ pi = ports.erase(pi);
+ else
+ pi++;
+ }
+
+ return true;
+ }
+};
+
+#else
+
+using namespace Arts;
+using namespace std;
+
+class AlsaMidiGateway_impl : virtual public AlsaMidiGateway_skel {
+public:
+ bool rescan()
+ {
+ /* dummy version: no ALSA support compiled in */
+ return false;
+ }
+};
+
+#endif
+
+namespace Arts {
+ REGISTER_IMPLEMENTATION(AlsaMidiGateway_impl);
+}