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livetrax/libs/midi++2/midi++/manager.h

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/*
Copyright (C) 1998 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.
*/
#ifndef __midi_manager_h__
#define __midi_manager_h__
#include <map>
#include <string>
#include <midi++/types.h>
#include <midi++/port.h>
namespace MIDI {
/** Creates, stores, and manages system MIDI ports.
*/
class Manager {
public:
~Manager ();
void set_api_data(void* data) { api_data = data; }
/** Signal the start of an audio cycle.
* This MUST be called before any reading/writing for this cycle.
* Realtime safe.
*/
void cycle_start(nframes_t nframes);
/** Signal the end of an audio cycle.
* This signifies that the cycle began with @ref cycle_start has ended.
* This MUST be called at the end of each cycle.
* Realtime safe.
*/
void cycle_end();
Port *add_port (PortRequest &);
int remove_port (std::string port);
Port *port (std::string name);
Port *port (size_t number);
size_t nports () { return ports_by_device.size(); }
int foreach_port (int (*func)(const Port &, size_t n, void *),
void *arg);
typedef std::map<std::string, Port *> PortMap;
const PortMap& get_midi_ports() const { return ports_by_tag; }
static Manager *instance () {
if (theManager == 0) {
theManager = new Manager;
}
return theManager;
}
static int parse_port_request (std::string str, Port::Type type);
private:
/* This is a SINGLETON pattern */
Manager ();
static Manager *theManager;
PortMap ports_by_device; /* canonical */
PortMap ports_by_tag; /* may contain duplicate Ports */
void *api_data;
void close_ports ();
};
} // namespace MIDI
#endif // __midi_manager_h__