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/*
    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_plugin_insert_h__
#define __ardour_plugin_insert_h__

#include <vector>
#include <string>

#include <sigc++/signal.h>
#include <ardour/ardour.h>
#include <ardour/plugin_state.h>
#include <ardour/types.h>
#include <ardour/processor.h>
#include <ardour/automation_event.h>

class XMLNode;

namespace ARDOUR {

class Session;
class Route;
class Plugin;

/** Plugin inserts: send data through a plugin
 */
class PluginInsert : public Processor
{
  public:
	PluginInsert (Session&, boost::shared_ptr<Plugin>, Placement);
	PluginInsert (Session&, const XMLNode&);
	PluginInsert (const PluginInsert&);
	~PluginInsert ();

	static const string port_automation_node_name;
	
	XMLNode& state(bool);
	XMLNode& get_state(void);
	int set_state(const XMLNode&);

	void run (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset);
	void silence (nframes_t nframes, nframes_t offset);
	
	void activate ();
	void deactivate ();

	void set_block_size (nframes_t nframes);

	ChanCount output_streams() const;
	ChanCount input_streams() const;
	ChanCount natural_output_streams() const;
	ChanCount natural_input_streams() const;

	bool     set_count (uint32_t num);
	uint32_t get_count () const { return _plugins.size(); }

	virtual bool      can_support_input_configuration (ChanCount in) const;
	virtual ChanCount output_for_input_configuration (ChanCount in) const;
	virtual bool      configure_io (ChanCount in, ChanCount out);

	bool is_generator() const;

	void set_parameter (ParamID param, float val);

	float default_parameter_value (ParamID param);

	boost::shared_ptr<Plugin> plugin(uint32_t num=0) const {
		if (num < _plugins.size()) { 
			return _plugins[num];
		} else {
			return _plugins[0]; // we always have one
		}
	}

	PluginType type ();

	string describe_parameter (ParamID param);

	nframes_t latency();

	void transport_stopped (nframes_t now);
	void automation_snapshot (nframes_t now);

  private:

	void parameter_changed (ParamID, float);
	
	std::vector<boost::shared_ptr<Plugin> > _plugins;
	
	void automation_run (BufferSet& bufs, nframes_t nframes, nframes_t offset);
	void connect_and_run (BufferSet& bufs, nframes_t nframes, nframes_t offset, bool with_auto, nframes_t now = 0);

	void init ();
	void set_automatable ();
	void auto_state_changed (ParamID which);
	void automation_list_creation_callback (ParamID, AutomationList&);

	int32_t count_for_configuration (ChanCount in, ChanCount out) const;

	boost::shared_ptr<Plugin> plugin_factory (boost::shared_ptr<Plugin>);
};

} // namespace ARDOUR

#endif /* __ardour_plugin_insert_h__ */