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livetrax/libs/midi++2/midimanager.cc

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/*
Copyright (C) 1998-99 Paul Barton-Davis
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.
$Id$
*/
#include <fcntl.h>
#include <glib.h>
#include <pbd/error.h>
#include <midi++/types.h>
#include <midi++/manager.h>
#include <midi++/factory.h>
#include <midi++/channel.h>
using namespace std;
using namespace MIDI;
using namespace PBD;
/* XXX check for strdup leaks */
Manager *Manager::theManager = 0;
Manager::Manager ()
{
inputPort = 0;
outputPort = 0;
inputChannelNumber = 0;
outputChannelNumber = 0;
api_data = 0;
}
Manager::~Manager ()
{
PortMap::iterator i;
for (i = ports_by_device.begin(); i != ports_by_device.end(); i++) {
delete (*i).second;
}
ports_by_device.erase (ports_by_device.begin(), ports_by_device.end());
ports_by_tag.erase (ports_by_tag.begin(), ports_by_tag.end());
if (theManager == this) {
theManager = 0;
}
}
Port *
Manager::add_port (const XMLNode& node)
{
Port::Descriptor desc (node);
PortFactory factory;
Port *port;
PortMap::iterator existing;
pair<string, Port *> newpair;
if (!PortFactory::ignore_duplicate_devices (desc.type)) {
if ((existing = ports_by_device.find (desc.device)) != ports_by_device.end()) {
port = (*existing).second;
if (port->mode() == desc.mode) {
/* Same mode - reuse the port, and just
create a new tag entry.
*/
newpair.first = desc.tag;
newpair.second = port;
ports_by_tag.insert (newpair);
return port;
}
/* If the existing is duplex, and this request
is not, then fail, because most drivers won't
allow opening twice with duplex and non-duplex
operation.
*/
if ((desc.mode == O_RDWR && port->mode() != O_RDWR) ||
(desc.mode != O_RDWR && port->mode() == O_RDWR)) {
error << "MIDIManager: port tagged \""
<< desc.tag
<< "\" cannot be opened duplex and non-duplex"
<< endmsg;
return 0;
}
/* modes must be different or complementary */
}
}
port = factory.create_port (node, api_data);
if (port == 0) {
return 0;
}
if (!port->ok()) {
delete port;
return 0;
}
newpair.first = port->name();
newpair.second = port;
ports_by_tag.insert (newpair);
newpair.first = port->device();
newpair.second = port;
ports_by_device.insert (newpair);
/* first port added becomes the default input
port.
*/
if (inputPort == 0) {
inputPort = port;
}
if (outputPort == 0) {
outputPort = port;
}
return port;
}
int
Manager::remove_port (Port* port)
{
PortMap::iterator res;
for (res = ports_by_device.begin(); res != ports_by_device.end(); ) {
PortMap::iterator tmp;
tmp = res;
++tmp;
if (res->second == port) {
ports_by_device.erase (res);
}
res = tmp;
}
for (res = ports_by_tag.begin(); res != ports_by_tag.end(); ) {
PortMap::iterator tmp;
tmp = res;
++tmp;
if (res->second == port) {
ports_by_tag.erase (res);
}
res = tmp;
}
delete port;
return 0;
}
int
Manager::set_input_port (string tag)
{
PortMap::iterator res;
bool found = false;
for (res = ports_by_tag.begin(); res != ports_by_tag.end(); res++) {
if (tag == (*res).first) {
found = true;
break;
}
}
if (!found) {
return -1;
}
inputPort = (*res).second;
return 0;
}
int
Manager::set_output_port (string tag)
{
PortMap::iterator res;
bool found = false;
for (res = ports_by_tag.begin(); res != ports_by_tag.end(); res++) {
if (tag == (*res).first) {
found = true;
break;
}
}
if (!found) {
return -1;
}
// XXX send a signal to say we're about to change output ports
if (outputPort) {
for (channel_t chan = 0; chan < 16; chan++) {
outputPort->channel (chan)->all_notes_off (0);
}
}
outputPort = (*res).second;
// XXX send a signal to say we've changed output ports
return 0;
}
Port *
Manager::port (string name)
{
PortMap::iterator res;
for (res = ports_by_tag.begin(); res != ports_by_tag.end(); res++) {
if (name == (*res).first) {
return (*res).second;
}
}
return 0;
}
int
Manager::foreach_port (int (*func)(const Port &, size_t, void *),
void *arg)
{
PortMap::const_iterator i;
int retval;
int n;
for (n = 0, i = ports_by_device.begin();
i != ports_by_device.end(); i++, n++) {
if ((retval = func (*((*i).second), n, arg)) != 0) {
return retval;
}
}
return 0;
}
void
Manager::cycle_start(nframes_t nframes)
{
for (PortMap::iterator i = ports_by_device.begin(); i != ports_by_device.end(); i++) {
(*i).second->cycle_start (nframes);
}
}
void
Manager::cycle_end()
{
for (PortMap::iterator i = ports_by_device.begin(); i != ports_by_device.end(); i++) {
(*i).second->cycle_end ();
}
}
int
Manager::get_known_ports (vector<PortSet>& ports)
{
return PortFactory::get_known_ports (ports);
}