new file

git-svn-id: svn://localhost/ardour2/trunk@854 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/region_factory.cc

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+/*
+    Copyright (C) 2000-2006 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.
+
+    $Id: playlist_factory.cc 629 2006-06-21 23:01:03Z paul $
+*/
+
+#include <pbd/error.h>
+
+#include <ardour/session.h>
+
+#include <ardour/region_factory.h>
+#include <ardour/region.h>
+#include <ardour/audioregion.h>
+#include <ardour/audiosource.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+
+sigc::signal<void,boost::shared_ptr<Region> > RegionFactory::CheckNewRegion;
+
+boost::shared_ptr<Region>
+RegionFactory::create (boost::shared_ptr<Region> region, jack_nframes_t start, 
+			     jack_nframes_t length, std::string name, 
+			     layer_t layer, Region::Flag flags, bool announce)
+{
+	boost::shared_ptr<AudioRegion> other;
+
+	if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
+		AudioRegion* ar = new AudioRegion (other, start, length, name, layer, flags);
+		boost::shared_ptr<AudioRegion> arp (ar);
+		boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
+		if (announce) {
+			CheckNewRegion (ret);
+		}
+		return ret;
+	} else {
+		fatal << _("programming error: RegionFactory::create() called with unknown Region type")
+		      << endmsg;
+		/*NOTREACHED*/
+		return boost::shared_ptr<Region>();
+	}
+}
+
+boost::shared_ptr<Region>
+RegionFactory::create (boost::shared_ptr<Region> region)
+{
+	boost::shared_ptr<AudioRegion> other;
+	
+	if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
+		boost::shared_ptr<Region> ret (new AudioRegion (other));
+		/* pure copy constructor - no CheckNewRegion emitted */
+		return ret;
+	} else {
+		fatal << _("programming error: RegionFactory::create() called with unknown Region type")
+		      << endmsg;
+		/*NOTREACHED*/
+		return boost::shared_ptr<Region>();
+	}
+}
+
+boost::shared_ptr<Region>
+RegionFactory::create (Session& session, XMLNode& node, bool yn)
+{
+	boost::shared_ptr<Region> r = session.XMLRegionFactory (node, yn);
+	CheckNewRegion (r);
+	return r;
+}
+	
+boost::shared_ptr<Region> 
+RegionFactory::create (SourceList& srcs, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
+{
+	AudioRegion* ar = new AudioRegion (srcs, start, length, name, layer, flags);
+	boost::shared_ptr<AudioRegion> arp (ar);
+	boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
+	if (announce) {
+		CheckNewRegion (ret);
+	}
+	return ret;
+}	
+
+boost::shared_ptr<Region> 
+RegionFactory::create (SourceList& srcs, const XMLNode& node)
+{
+	if (srcs.empty()) {
+		return boost::shared_ptr<Region>();
+	}
+
+	boost::shared_ptr<Region> ret (new AudioRegion (srcs, node));
+	CheckNewRegion (ret);
+	return ret;
+}
+
+boost::shared_ptr<Region> 
+RegionFactory::create (Source& src, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
+{
+	AudioSource* as;
+
+	if ((as = dynamic_cast<AudioSource*>(&src)) != 0) {
+		boost::shared_ptr<Region> ret (new AudioRegion (*as, start, length, name, layer, flags));
+		if (announce) {
+			CheckNewRegion (ret);
+		}
+		return ret;
+	}
+
+	return boost::shared_ptr<Region>();
+}