rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 180 insertions, 0 deletions

diff --git a/libs/ardour/ardour/port.h b/libs/ardour/ardour/port.h
new file mode 100644
index 0000000000..93c34da16d
--- /dev/null
+++ b/libs/ardour/ardour/port.h
@@ -0,0 +1,180 @@
+/*
+    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 <set>
+#include <vector>
+#include <string>
+
+#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 & IsOutput;
+	}
+
+	bool can_monitor () const {
+		return _flags & CanMonitor;
+	}
+
+	void enable_metering() {
+		_metering++;
+	}
+	
+	void disable_metering () {
+		if (_metering) { _metering--; }
+	}
+
+	virtual void cycle_start (nframes_t nframes, nframes_t offset) {}
+	virtual void cycle_end (nframes_t nframes, nframes_t offset) {}
+	virtual DataType type() const = 0;
+	virtual Buffer& get_buffer() = 0;
+
+	virtual bool connected () const;
+	virtual bool connected_to (const std::string& portname) const;
+	virtual int get_connections (std::vector<std::string>&) const;
+
+	virtual int connect (Port& other);
+	virtual int disconnect (Port& other);
+	virtual int disconnect_all ();
+	
+	virtual void reset ();
+	virtual int reestablish () {return 0; }
+	virtual int reconnect () { return 0; }
+
+	virtual int set_name (const std::string& str) {
+		_name = str;
+		return 0;
+	}
+
+	virtual std::string short_name() 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;
+
+	static void set_engine (AudioEngine*);
+
+  protected:
+	friend class AudioEngine;
+
+	Port (const std::string& name, Flags flgs);
+
+	virtual void recompute_total_latency() const {}
+	
+	/* engine isn't supposed to access below here */
+
+	Flags          _flags;
+	std::string    _type;
+	std::string    _name;
+	unsigned short _metering;
+	bool           _last_monitor;
+	nframes_t      _latency;
+
+	std::set<Port*> _connections;
+
+	static AudioEngine* engine;
+};
+
+class PortConnectableByName {
+  public:
+	PortConnectableByName() {}
+	virtual ~PortConnectableByName() {}
+
+	virtual int connect (const std::string& other_name) = 0;
+	virtual int disconnect (const std::string& other_name) = 0;
+};
+ 
+class PortFacade : public virtual Port, public PortConnectableByName { 
+  public:
+	PortFacade (const std::string& name, Flags flgs) : Port (name, flgs), _ext_port (0) {}
+	~PortFacade() {}
+
+	void reset ();
+	int reestablish ();
+	int reconnect ();
+
+	int connect (Port& other);
+	int disconnect (Port& other);
+	int disconnect_all ();
+
+	int connect (const std::string& other_name);
+	int disconnect (const std::string& other_name);
+
+	bool connected () const;
+	bool connected_to (const std::string& portname) const;
+	int get_connections (std::vector<std::string>&) const;
+
+	std::string short_name() const;
+	int         set_name (const std::string& str);
+	bool        monitoring_input () const;
+	void        ensure_monitor_input (bool yn);
+	void        request_monitor_input (bool yn);
+	nframes_t   latency () const;
+	nframes_t   total_latency () const;
+	void        set_latency (nframes_t nframes);
+
+  protected:
+	Port* _ext_port;
+};
+
+} // namespace ARDOUR
+
+#endif /* __ardour_port_h__ */