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, 121 insertions, 0 deletions

diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
new file mode 100644
index 0000000000..a2c1d98ae7
--- /dev/null
+++ b/libs/ardour/ardour/automatable.h
@@ -0,0 +1,121 @@
+/*
+    Copyright (C) 2000-2007 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_automatable_h__
+#define __ardour_automatable_h__
+
+#include <set>
+#include <map>
+#include <boost/shared_ptr.hpp>
+#include <ardour/session_object.h>
+#include <ardour/automation_event.h>
+#include <ardour/automation_control.h>
+#include <ardour/parameter.h>
+
+namespace ARDOUR {
+
+class Session;
+class AutomationControl;
+
+class Automatable : public SessionObject
+{
+public:
+	Automatable(Session&, const std::string& name);
+
+	virtual ~Automatable() {}
+
+	// shorthand for gain, pan, etc
+	inline boost::shared_ptr<AutomationControl>
+	control(AutomationType type, bool create_if_missing=false) {
+		return control(Parameter(type), create_if_missing);
+	}
+
+	virtual boost::shared_ptr<AutomationControl> control(Parameter id, bool create_if_missing=false);
+	virtual boost::shared_ptr<const AutomationControl> control(Parameter id) const;
+	
+	boost::shared_ptr<AutomationControl> control_factory(boost::shared_ptr<AutomationList> list);
+	
+	typedef std::map<Parameter,boost::shared_ptr<AutomationControl> > Controls;
+	Controls&       controls()       { return _controls; }
+	const Controls& controls() const { return _controls; }
+
+	virtual void add_control(boost::shared_ptr<AutomationControl>);
+
+	virtual void automation_snapshot(nframes_t now, bool force);
+	bool should_snapshot (nframes_t now) {
+		return (_last_automation_snapshot > now || (now - _last_automation_snapshot) > _automation_interval);
+	}
+	virtual void transport_stopped(nframes_t now);
+
+	virtual bool find_next_event(nframes_t start, nframes_t end, ControlEvent& ev) const;
+	
+	virtual string describe_parameter(Parameter param);
+	virtual float  default_parameter_value(Parameter param) { return 1.0f; }
+	
+	virtual void clear_automation();
+
+	AutoState get_parameter_automation_state (Parameter param, bool lock = true);
+	virtual void set_parameter_automation_state (Parameter param, AutoState);
+	
+	AutoStyle get_parameter_automation_style (Parameter param);
+	void set_parameter_automation_style (Parameter param, AutoStyle);
+
+	void protect_automation ();
+
+	void what_has_automation(std::set<Parameter>&) const;
+	void what_has_visible_automation(std::set<Parameter>&) const;
+	const std::set<Parameter>& what_can_be_automated() const { return _can_automate_list; }
+
+	void mark_automation_visible(Parameter, bool);
+	
+	Glib::Mutex& automation_lock() const { return _automation_lock; }
+
+	static void set_automation_interval (jack_nframes_t frames) {
+		_automation_interval = frames;
+	}
+
+	static jack_nframes_t automation_interval() { 
+		return _automation_interval;
+	}
+
+protected:
+
+	void can_automate(Parameter);
+
+	virtual void auto_state_changed (Parameter which) {}
+
+	int set_automation_state(const XMLNode&, Parameter default_param);
+	XMLNode& get_automation_state();
+	
+	int load_automation (const std::string& path);
+	int old_set_automation_state(const XMLNode&);
+
+	mutable Glib::Mutex _automation_lock;
+	
+	Controls            _controls;
+	std::set<Parameter> _visible_controls;
+	std::set<Parameter> _can_automate_list;
+	
+	nframes_t _last_automation_snapshot;
+	static nframes_t _automation_interval;
+};
+
+} // namespace ARDOUR
+
+#endif /* __ardour_automatable_h__ */