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/*
Copyright (C) 2002 Paul 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 __ardour_port_h__
#define __ardour_port_h__
#include <sigc++/signal.h>
#include <pbd/failed_constructor.h>
#include <ardour/ardour.h>
#include <ardour/data_type.h>
#include <jack/jack.h>
namespace ARDOUR {
class AudioEngine;
class Buffer;
/** Abstract base for ports
*/
class Port : public virtual sigc::trackable {
public:
enum Flags {
IsInput = JackPortIsInput,
IsOutput = JackPortIsOutput,
IsPhysical = JackPortIsPhysical,
IsTerminal = JackPortIsTerminal,
CanMonitor = JackPortCanMonitor
};
virtual ~Port() {}
std::string name() const {
return _name;
}
Flags flags() const {
return _flags;
}
bool receives_input() const {
return _flags & IsInput;
}
bool sends_output () const {
return _flags & JackPortIsOutput;
}
bool can_monitor () const {
return _flags & CanMonitor;
}
void enable_metering() {
_metering++;
}
void disable_metering () {
if (_metering) { _metering--; }
}
virtual DataType type() const = 0;
virtual void cycle_start(nframes_t nframes) {}
virtual void cycle_end() {}
virtual Buffer& get_buffer() = 0;
virtual std::string short_name() = 0;
virtual int set_name (std::string str) = 0;
virtual int reestablish () = 0;
virtual int connected () const = 0;
virtual bool connected_to (const std::string& portname) const = 0;
virtual const char ** get_connections () const = 0;
virtual bool monitoring_input () const = 0;
virtual void ensure_monitor_input (bool yn) = 0;
virtual void request_monitor_input (bool yn) = 0;
virtual nframes_t latency () const = 0;
virtual nframes_t total_latency () const = 0;
virtual void set_latency (nframes_t nframes) = 0;
sigc::signal<void,bool> MonitorInputChanged;
sigc::signal<void,bool> ClockSyncChanged;
protected:
friend class AudioEngine;
Port (Flags);
virtual int disconnect () = 0;
virtual void recompute_total_latency() const = 0;
virtual void reset ();
/* engine isn't supposed to access below here */
Flags _flags;
std::string _type;
std::string _name;
unsigned short _metering;
bool _last_monitor;
};
} // namespace ARDOUR
#endif /* __ardour_port_h__ */
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