remove empty sigc++2 directory

git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 0 insertions, 788 deletions

diff --git a/libs/ardour/audio_playlist.cc b/libs/ardour/audio_playlist.cc
deleted file mode 100644
index 1506d204f1..0000000000
--- a/libs/ardour/audio_playlist.cc
+++ /dev/null
@@ -1,788 +0,0 @@
-/*
-    Copyright (C) 2003 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.
-
-*/
-
-#include <algorithm>
-
-#include <cstdlib>
-
-#include <sigc++/bind.h>
-
-#include <ardour/types.h>
-#include <ardour/configuration.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/audioregion.h>
-#include <ardour/crossfade.h>
-#include <ardour/crossfade_compare.h>
-#include <ardour/session.h>
-#include <pbd/enumwriter.h>
-
-#include "i18n.h"
-
-using namespace ARDOUR;
-using namespace sigc;
-using namespace std;
-using namespace PBD;
-
-AudioPlaylist::AudioPlaylist (Session& session, const XMLNode& node, bool hidden)
-	: Playlist (session, node, DataType::AUDIO, hidden)
-{
-	const XMLProperty* prop = node.property("type");
-	assert(!prop || DataType(prop->value()) == DataType::AUDIO);
-
-	in_set_state++;
-	set_state (node);
-	in_set_state--;
-}
-
-AudioPlaylist::AudioPlaylist (Session& session, string name, bool hidden)
-	: Playlist (session, name, DataType::AUDIO, hidden)
-{
-}
-
-AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, string name, bool hidden)
-	: Playlist (other, name, hidden)
-{
-	RegionList::const_iterator in_o  = other->regions.begin();
-	RegionList::iterator in_n = regions.begin();
-
-	while (in_o != other->regions.end()) {
-		boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(*in_o);
-
-		// We look only for crossfades which begin with the current region, so we don't get doubles
-		for (Crossfades::const_iterator xfades = other->_crossfades.begin(); xfades != other->_crossfades.end(); ++xfades) {
-			if ((*xfades)->in() == ar) {
-				// We found one! Now copy it!
-
-				RegionList::const_iterator out_o = other->regions.begin();
-				RegionList::const_iterator out_n = regions.begin();
-
-				while (out_o != other->regions.end()) {
-					
-					boost::shared_ptr<AudioRegion>ar2 = boost::dynamic_pointer_cast<AudioRegion>(*out_o);
-					
-					if ((*xfades)->out() == ar2) {
-						boost::shared_ptr<AudioRegion>in  = boost::dynamic_pointer_cast<AudioRegion>(*in_n);
-						boost::shared_ptr<AudioRegion>out = boost::dynamic_pointer_cast<AudioRegion>(*out_n);
-						boost::shared_ptr<Crossfade> new_fade = boost::shared_ptr<Crossfade> (new Crossfade (*xfades, in, out));
-						add_crossfade(new_fade);
-						break;
-					}
-					
-					out_o++;
-					out_n++;
-				}
-//				cerr << "HUH!? second region in the crossfade not found!" << endl;
-			}
-		}
-
-		in_o++;
-		in_n++;
-	}
-}
-
-AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, nframes_t start, nframes_t cnt, string name, bool hidden)
-	: Playlist (other, start, cnt, name, hidden)
-{
-	/* this constructor does NOT notify others (session) */
-}
-
-AudioPlaylist::~AudioPlaylist ()
-{
-  	GoingAway (); /* EMIT SIGNAL */
-
-	/* drop connections to signals */
-
-	notify_callbacks ();
-	
-	_crossfades.clear ();
-}
-
-struct RegionSortByLayer {
-    bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
-	    return a->layer() < b->layer();
-    }
-};
-
-ARDOUR::nframes_t
-AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t start,
-		     nframes_t cnt, unsigned chan_n)
-{
-	nframes_t ret = cnt;
-	nframes_t end;
-	nframes_t read_frames;
-	nframes_t skip_frames;
-
-	/* optimizing this memset() away involves a lot of conditionals
-	   that may well cause more of a hit due to cache misses 
-	   and related stuff than just doing this here.
-	   
-	   it would be great if someone could measure this
-	   at some point.
-
-	   one way or another, parts of the requested area
-	   that are not written to by Region::region_at()
-	   for all Regions that cover the area need to be
-	   zeroed.
-	*/
-
-	memset (buf, 0, sizeof (Sample) * cnt);
-
-	/* this function is never called from a realtime thread, so 
-	   its OK to block (for short intervals).
-	*/
-
-	Glib::Mutex::Lock rm (region_lock);
-
-	end =  start + cnt - 1;
-	read_frames = 0;
-	skip_frames = 0;
-	_read_data_count = 0;
-
-	_read_data_count = 0;
-
-	RegionList* rlist = regions_to_read (start, start+cnt);
-
-	if (rlist->empty()) {
-		delete rlist;
-		return cnt;
-	}
-
-	map<uint32_t,vector<boost::shared_ptr<Region> > > relevant_regions;
-	map<uint32_t,vector<boost::shared_ptr<Crossfade> > > relevant_xfades;
-	vector<uint32_t> relevant_layers;
-
-	for (RegionList::iterator i = rlist->begin(); i != rlist->end(); ++i) {
-		if ((*i)->coverage (start, end) != OverlapNone) {
-			relevant_regions[(*i)->layer()].push_back (*i);
-			relevant_layers.push_back ((*i)->layer());
-		}
-	}
-
-	for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
-		if ((*i)->coverage (start, end) != OverlapNone) {
-			relevant_xfades[(*i)->upper_layer()].push_back (*i);
-		}
-	}
-
-//	RegionSortByLayer layer_cmp;
-//	relevant_regions.sort (layer_cmp);
-
-	/* XXX this whole per-layer approach is a hack that
-	   should be removed once Crossfades become
-	   CrossfadeRegions and we just grab a list of relevant
-	   regions and call read_at() on all of them.
-	*/
-
-	sort (relevant_layers.begin(), relevant_layers.end());
-
-	for (vector<uint32_t>::iterator l = relevant_layers.begin(); l != relevant_layers.end(); ++l) {
-
-		vector<boost::shared_ptr<Region> > r (relevant_regions[*l]);
-		vector<boost::shared_ptr<Crossfade> >& x (relevant_xfades[*l]);
-
-		for (vector<boost::shared_ptr<Region> >::iterator i = r.begin(); i != r.end(); ++i) {
-			boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(*i);
-			assert(ar);
-			ar->read_at (buf, mixdown_buffer, gain_buffer, start, cnt, chan_n, read_frames, skip_frames);
-			_read_data_count += ar->read_data_count();
-		}
-		
-		for (vector<boost::shared_ptr<Crossfade> >::iterator i = x.begin(); i != x.end(); ++i) {
-			(*i)->read_at (buf, mixdown_buffer, gain_buffer, start, cnt, chan_n);
-
-			/* don't JACK up _read_data_count, since its the same data as we just
-			   read from the regions, and the OS should handle that for us.
-			*/
-		}
-	}
-
-	delete rlist;
-	return ret;
-}
-
-
-void
-AudioPlaylist::remove_dependents (boost::shared_ptr<Region> region)
-{
-	boost::shared_ptr<AudioRegion> r = boost::dynamic_pointer_cast<AudioRegion> (region);
-
-	if (in_set_state) {
-		return;
-	}
-	
-	if (r == 0) {
-		fatal << _("programming error: non-audio Region passed to remove_overlap in audio playlist")
-		      << endmsg;
-		return;
-	}
-
-	for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ) {
-		
-		if ((*i)->involves (r)) {
-			i = _crossfades.erase (i);
-		} else {
-			++i;
-		}
-	}
-}
-
-
-void
-AudioPlaylist::flush_notifications ()
-{
-	Playlist::flush_notifications();
-
-	if (in_flush) {
-		return;
-	}
-
-	in_flush = true;
-
-	Crossfades::iterator a;
-	for (a = _pending_xfade_adds.begin(); a != _pending_xfade_adds.end(); ++a) {
-		NewCrossfade (*a); /* EMIT SIGNAL */
-	}
-
-	_pending_xfade_adds.clear ();
-	
-	in_flush = false;
-}
-
-void
-AudioPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
-{
-	boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
-	set<boost::shared_ptr<Crossfade> > updated;
-
-	if (ar == 0) {
-		return;
-	}
-
-	for (Crossfades::iterator x = _crossfades.begin(); x != _crossfades.end();) {
-
-		Crossfades::iterator tmp;
-		
-		tmp = x;
-		++tmp;
-
-		/* only update them once */
-
-		if ((*x)->involves (ar)) {
-
-			pair<set<boost::shared_ptr<Crossfade> >::iterator, bool> const u = updated.insert (*x);
-			
-			if (u.second) {
-				/* x was successfully inserted into the set, so it has not already been updated */
-				try {
-					(*x)->refresh ();
-				}
-
-				catch (Crossfade::NoCrossfadeHere& err) {
-					// relax, Invalidated during refresh
-				}
-			}
-		}
-
-		x = tmp;
-	}
-}
-
-void
-AudioPlaylist::finalize_split_region (boost::shared_ptr<Region> o, boost::shared_ptr<Region> l, boost::shared_ptr<Region> r)
-{
-	boost::shared_ptr<AudioRegion> orig  = boost::dynamic_pointer_cast<AudioRegion>(o);
-	boost::shared_ptr<AudioRegion> left  = boost::dynamic_pointer_cast<AudioRegion>(l);
-	boost::shared_ptr<AudioRegion> right = boost::dynamic_pointer_cast<AudioRegion>(r);
-
-	for (Crossfades::iterator x = _crossfades.begin(); x != _crossfades.end();) {
-		Crossfades::iterator tmp;
-		tmp = x;
-		++tmp;
-
-		boost::shared_ptr<Crossfade> fade;
-		
-		if ((*x)->_in == orig) {
-			if (! (*x)->covers(right->position())) {
-				fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, left, (*x)->_out));
-			} else {
-				// Overlap, the crossfade is copied on the left side of the right region instead
-				fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, right, (*x)->_out));
-			}
-		}
-		
-		if ((*x)->_out == orig) {
-			if (! (*x)->covers(right->position())) {
-				fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, right));
-			} else {
-				// Overlap, the crossfade is copied on the right side of the left region instead
-				fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, left));
-			}
-		}
-		
-		if (fade) {
-			_crossfades.remove (*x);
-			add_crossfade (fade);
-		}
-		x = tmp;
-	}
-}
-
-void
-AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
-{
-	boost::shared_ptr<AudioRegion> other;
-	boost::shared_ptr<AudioRegion> region;
-	boost::shared_ptr<AudioRegion> top;
-	boost::shared_ptr<AudioRegion> bottom;
-	boost::shared_ptr<Crossfade>   xfade;
-	RegionList*  touched_regions;
-
-	if (in_set_state || in_partition) {
-		return;
-	}
-
-	if ((region = boost::dynamic_pointer_cast<AudioRegion> (r)) == 0) {
-		fatal << _("programming error: non-audio Region tested for overlap in audio playlist")
-		      << endmsg;
-		return;
-	}
-
-	if (!norefresh) {
-		refresh_dependents (r);
-	}
-
-
-	if (!Config->get_auto_xfade()) {
-		return;
-	}
-
-	for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
-
-		nframes_t xfade_length;
-
-		other = boost::dynamic_pointer_cast<AudioRegion> (*i);
-
-		if (other == region) {
-			continue;
-		}
-
-		if (other->muted() || region->muted()) {
-			continue;
-		}
-		
-
-		if (other->layer() < region->layer()) {
-			top = region;
-			bottom = other;
-		} else {
-			top = other;
-			bottom = region;
-		}
-
-		if (!top->opaque()) {
-			continue;
-		}
-
-		OverlapType c = top->coverage (bottom->position(), bottom->last_frame());
-
-		try {
-			switch (c) {
-			case OverlapNone:
-				break;
-
-			case OverlapInternal:
-				 /* {=============== top  =============}
-				  *     [ ----- bottom  ------- ]
-				  */
-				break;
-
-			case OverlapExternal:
- 
-				/*     [ -------- top ------- ]
-				 * {=========== bottom =============}
-				 */
-				
-				/* to avoid discontinuities at the region boundaries of an internal
-				   overlap (this region is completely within another), we create
-				   two hidden crossfades at each boundary. this is not dependent
-				   on the auto-xfade option, because we require it as basic
-				   audio engineering.
-				*/
-				
-				xfade_length = min ((nframes_t) 720, top->length());
-
-				if (top_region_at (top->first_frame()) == top) {
- 
-					xfade = boost::shared_ptr<Crossfade> (new Crossfade (top, bottom, xfade_length, top->first_frame(), StartOfIn));
-					add_crossfade (xfade);
-				}
-
-				if (top_region_at (top->last_frame() - 1) == top) {
-
-					/* 
-					   only add a fade out if there is no region on top of the end of 'top' (which 
-					   would cover it).
-					*/
-					
-					xfade = boost::shared_ptr<Crossfade> (new Crossfade (bottom, top, xfade_length, top->last_frame() - xfade_length, EndOfOut));
-					add_crossfade (xfade);
-				}
-				break;
-			case OverlapStart:
-
-				/*                   { ==== top ============ } 
-				 *   [---- bottom -------------------] 
-				 */
-
-				if (Config->get_xfade_model() == FullCrossfade) {
-					touched_regions = regions_touched (top->first_frame(), bottom->last_frame());
-					if (touched_regions->size() <= 2) {
-						xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, Config->get_xfade_model(), Config->get_xfades_active()));
-						add_crossfade (xfade);
-					}
-				} else {
-
-					touched_regions = regions_touched (top->first_frame(), 
-									   top->first_frame() + min ((nframes_t)Config->get_short_xfade_seconds() * _session.frame_rate(), 
-												     top->length()));
-					if (touched_regions->size() <= 2) {
-						xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, Config->get_xfade_model(), Config->get_xfades_active()));
-						add_crossfade (xfade);
-					}
-				}
-				break;
-			case OverlapEnd:
-
-
-				/* [---- top ------------------------] 
-				 *                { ==== bottom ============ } 
-				 */ 
-
-				if (Config->get_xfade_model() == FullCrossfade) {
-
-					touched_regions = regions_touched (bottom->first_frame(), top->last_frame());
-					if (touched_regions->size() <= 2) {
-						xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, 
-												     Config->get_xfade_model(), Config->get_xfades_active()));
-						add_crossfade (xfade);
-					}
-
-				} else {
-					touched_regions = regions_touched (bottom->first_frame(), 
-									   bottom->first_frame() + min ((nframes_t)Config->get_short_xfade_seconds() * _session.frame_rate(), 
-													bottom->length()));
-					if (touched_regions->size() <= 2) {
-						xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, Config->get_xfade_model(), Config->get_xfades_active()));
-						add_crossfade (xfade);
-					}
-				}
-				break;
-			default:
-				xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, 
-										     Config->get_xfade_model(), Config->get_xfades_active()));
-				add_crossfade (xfade);
-			}
-		}
-
-		catch (failed_constructor& err) {
-			continue;
-		}
-		
-		catch (Crossfade::NoCrossfadeHere& err) {
-			continue;
-		}
-		
-	}
-}
-
-void
-AudioPlaylist::add_crossfade (boost::shared_ptr<Crossfade> xfade)
-{
-	Crossfades::iterator ci;
-
-	for (ci = _crossfades.begin(); ci != _crossfades.end(); ++ci) {
-		if (*(*ci) == *xfade) { // Crossfade::operator==()
-			break;
-		}
-	}
-	
-	if (ci != _crossfades.end()) {
-		// it will just go away
-	} else {
-		_crossfades.push_back (xfade);
-
-		xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
-		xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
-
-		notify_crossfade_added (xfade);
-	}
-}
-	
-void AudioPlaylist::notify_crossfade_added (boost::shared_ptr<Crossfade> x)
-{
-	if (g_atomic_int_get(&block_notifications)) {
-		_pending_xfade_adds.insert (_pending_xfade_adds.end(), x);
-	} else {
-
-		NewCrossfade (x); /* EMIT SIGNAL */
-	}
-}
-
-void
-AudioPlaylist::crossfade_invalidated (boost::shared_ptr<Region> r)
-{
-	Crossfades::iterator i;
-	boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
-
-	xfade->in()->resume_fade_in ();
-	xfade->out()->resume_fade_out ();
-
-	if ((i = find (_crossfades.begin(), _crossfades.end(), xfade)) != _crossfades.end()) {
-		_crossfades.erase (i);
-	}
-}
-
-int
-AudioPlaylist::set_state (const XMLNode& node)
-{
-	XMLNode *child;
-	XMLNodeList nlist;
-	XMLNodeConstIterator niter;
-
-	in_set_state++;
-	freeze ();
-
-	Playlist::set_state (node);
-
-	nlist = node.children();
-
-	for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
-
-		child = *niter;
-
-		if (child->name() != "Crossfade") {
-			continue;
-		}
-
-		try {
-			boost::shared_ptr<Crossfade> xfade = boost::shared_ptr<Crossfade> (new Crossfade (*((const Playlist *)this), *child));
-			_crossfades.push_back (xfade);
-			xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
-			xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
-			NewCrossfade(xfade);
-		}
-		
-		catch (failed_constructor& err) {
-			//	cout << string_compose (_("could not create crossfade object in playlist %1"),
-			//	  _name) 
-			//    << endl;
-			continue;
-		}
-	}
-
-	thaw ();
-	in_set_state--;
-
-	return 0;
-}
-
-void
-AudioPlaylist::clear (bool with_signals)
-{
-	_crossfades.clear ();
-	Playlist::clear (with_signals);
-}
-
-XMLNode&
-AudioPlaylist::state (bool full_state)
-{
-	XMLNode& node = Playlist::state (full_state);
-
-	if (full_state) {
-		for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
-			node.add_child_nocopy ((*i)->get_state());
-		}
-	}
-	
-	return node;
-}
-
-void
-AudioPlaylist::dump () const
-{
-	boost::shared_ptr<Region>r;
-	boost::shared_ptr<Crossfade> x;
-
-	cerr << "Playlist \"" << _name << "\" " << endl
-	     << regions.size() << " regions "
-	     << _crossfades.size() << " crossfades"
-	     << endl;
-
-	for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
-		r = *i;
-		cerr << "  " << r->name() << " @ " << r << " [" 
-		     << r->start() << "+" << r->length() 
-		     << "] at " 
-		     << r->position()
-		     << " on layer "
-		     << r->layer ()
-		     << endl;
-	}
-
-	for (Crossfades::const_iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
-		x = *i;
-		cerr << "  xfade [" 
-		     << x->out()->name()
-		     << ','
-		     << x->in()->name()
-		     << " @ "
-		     << x->position()
-		     << " length = " 
-		     << x->length ()
-		     << " active ? "
-		     << (x->active() ? "yes" : "no")
-		     << endl;
-	}
-}
-
-bool
-AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
-{
-	boost::shared_ptr<AudioRegion> r = boost::dynamic_pointer_cast<AudioRegion> (region);
-	bool changed = false;
-	Crossfades::iterator c, ctmp;
-	set<boost::shared_ptr<Crossfade> > unique_xfades;
-
-	if (r == 0) {
-		fatal << _("programming error: non-audio Region passed to remove_overlap in audio playlist")
-		      << endmsg;
-		/*NOTREACHED*/
-		return false;
-	}
-
-	{ 
-		RegionLock rlock (this);
-
-		for (RegionList::iterator i = regions.begin(); i != regions.end(); ) {
-			
-			RegionList::iterator tmp = i;
-			++tmp;
-			
-			if ((*i) == region) {
-				regions.erase (i);
-				changed = true;
-			}
-			
-			i = tmp;
-		}
-
-		for (set<boost::shared_ptr<Region> >::iterator x = all_regions.begin(); x != all_regions.end(); ) {
-
-			set<boost::shared_ptr<Region> >::iterator xtmp = x;
-			++xtmp;
-			
-			if ((*x) == region) {
-				all_regions.erase (x);
-				changed = true;
-			}
-			
-			x = xtmp;
-		}
-
-		region->set_playlist (boost::shared_ptr<Playlist>());
-	}
-
-	for (c = _crossfades.begin(); c != _crossfades.end(); ) {
-		ctmp = c;
-		++ctmp;
-
-		if ((*c)->involves (r)) {
-			unique_xfades.insert (*c);
-			_crossfades.erase (c);
-		}
-		
-		c = ctmp;
-	}
-
-	if (changed) {
-		/* overload this, it normally means "removed", not destroyed */
-		notify_region_removed (region);
-	}
-
-	return changed;
-}
-
-void
-AudioPlaylist::crossfade_changed (Change ignored)
-{
-	if (in_flush || in_set_state) {
-		return;
-	}
-
-	/* XXX is there a loop here? can an xfade change not happen
-	   due to a playlist change? well, sure activation would
-	   be an example. maybe we should check the type of change
-	   that occured.
-	*/
-
-	notify_modified ();
-}
-
-bool
-AudioPlaylist::region_changed (Change what_changed, boost::shared_ptr<Region> region)
-{
-	if (in_flush || in_set_state) {
-		return false;
-	}
-
-	Change our_interests = Change (AudioRegion::FadeInChanged|
-				       AudioRegion::FadeOutChanged|
-				       AudioRegion::FadeInActiveChanged|
-				       AudioRegion::FadeOutActiveChanged|
-				       AudioRegion::EnvelopeActiveChanged|
-				       AudioRegion::ScaleAmplitudeChanged|
-				       AudioRegion::EnvelopeChanged);
-	bool parent_wants_notify;
-
-	parent_wants_notify = Playlist::region_changed (what_changed, region);
-
-	if ((parent_wants_notify || (what_changed & our_interests))) {
-		notify_modified ();
-	}
-
-	return true; 
-}
-
-void
-AudioPlaylist::crossfades_at (nframes_t frame, Crossfades& clist)
-{
-	RegionLock rlock (this);
-
-	for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
-		nframes_t start, end;
-
-		start = (*i)->position();
-		end = start + (*i)->overlap_length(); // not length(), important difference
-
-		if (frame >= start && frame <= end) {
-			clist.push_back (*i);
-		} 
-	}
-}
-