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, 1532 deletions

diff --git a/libs/ardour/region.cc b/libs/ardour/region.cc
deleted file mode 100644
index a6d153f359..0000000000
--- a/libs/ardour/region.cc
+++ /dev/null
@@ -1,1532 +0,0 @@
-/*
-    Copyright (C) 2000-2003 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 <iostream>
-#include <cmath>
-#include <climits>
-#include <algorithm>
-#include <sstream>
-
-#include <sigc++/bind.h>
-#include <sigc++/class_slot.h>
-
-#include <glibmm/thread.h>
-#include <pbd/xml++.h>
-#include <pbd/stacktrace.h>
-#include <pbd/enumwriter.h>
-
-#include <ardour/region.h>
-#include <ardour/playlist.h>
-#include <ardour/session.h>
-#include <ardour/source.h>
-#include <ardour/tempo.h>
-#include <ardour/region_factory.h>
-#include <ardour/filter.h>
-
-#include "i18n.h"
-
-using namespace std;
-using namespace ARDOUR;
-using namespace PBD;
-
-Change Region::FadeChanged       = ARDOUR::new_change ();
-Change Region::SyncOffsetChanged = ARDOUR::new_change ();
-Change Region::MuteChanged       = ARDOUR::new_change ();
-Change Region::OpacityChanged    = ARDOUR::new_change ();
-Change Region::LockChanged       = ARDOUR::new_change ();
-Change Region::LayerChanged      = ARDOUR::new_change ();
-Change Region::HiddenChanged     = ARDOUR::new_change ();
-
-
-/* derived-from-derived constructor (no sources in constructor) */
-Region::Region (Session& s, nframes_t start, nframes_t length, const string& name, DataType type, layer_t layer, Region::Flag flags)
-	: Automatable(s, name)
-	, _type(type)
-	, _flags(flags)
-	, _start(start) 
-	, _length(length) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(AudioTime)
-	, _sync_position(_start)
-	, _layer(layer)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _stretch(1.0)
-	, _read_data_count(0)
-	, _pending_changed(Change (0))
-	, _last_layer_op(0)
-{
-	/* no sources at this point */
-}
-
-/** Basic Region constructor (single source) */
-Region::Region (boost::shared_ptr<Source> src, nframes_t start, nframes_t length, const string& name, DataType type, layer_t layer, Region::Flag flags)
-	: Automatable(src->session(), name)
-	, _type(type)
-	, _flags(flags)
-	, _start(start) 
-	, _length(length) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(AudioTime)
-	, _sync_position(_start)
-	, _layer(layer)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _ancestral_start (start)
-	, _ancestral_length (length)
-	, _stretch (1.0)
-	, _shift (0.0)
-	, _valid_transients(false)
-	, _read_data_count(0)
-	, _pending_changed(Change (0))
-	, _last_layer_op(0)
-
-{
-	_sources.push_back (src);
-	_master_sources.push_back (src);
-
-	src->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), src));
-
-	assert(_sources.size() > 0);
-	_positional_lock_style = AudioTime;
-}
-
-/** Basic Region constructor (many sources) */
-Region::Region (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, DataType type, layer_t layer, Region::Flag flags)
-	: Automatable(srcs.front()->session(), name)
-	, _type(type)
-	, _flags(flags)
-	, _start(start) 
-	, _length(length) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(AudioTime)
-	, _sync_position(_start)
-	, _layer(layer)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _stretch(1.0)
-	, _read_data_count(0)
-	, _pending_changed(Change (0))
-	, _last_layer_op(0)
-{
-	
-	set<boost::shared_ptr<Source> > unique_srcs;
-
-	for (SourceList::const_iterator i=srcs.begin(); i != srcs.end(); ++i) {
-		_sources.push_back (*i);
-		(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		unique_srcs.insert (*i);
-	}
-
-	for (SourceList::const_iterator i = srcs.begin(); i != srcs.end(); ++i) {
-		_master_sources.push_back (*i);
-		if (unique_srcs.find (*i) == unique_srcs.end()) {
-			(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		}
-	}
-	
-	assert(_sources.size() > 0);
-}
-
-/** Create a new Region from part of an existing one */
-Region::Region (boost::shared_ptr<const Region> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
-	: Automatable(other->session(), name)
-	, _type(other->data_type())
-	, _flags(Flag(flags & ~(Locked|PositionLocked|WholeFile|Hidden)))
-	, _start(other->_start + offset) 
-	, _length(length) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(other->_positional_lock_style)
-	, _sync_position(_start)
-	, _layer(layer)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _ancestral_start (other->_ancestral_start + offset)
-	, _ancestral_length (length)
-	, _stretch (1.0)
-	, _shift (0.0)
-	, _valid_transients(false)
-	, _read_data_count(0)
-	, _pending_changed(Change (0))
-	, _last_layer_op(0)
-{
-	if (other->_sync_position < offset)
-		_sync_position = other->_sync_position;
-
-	set<boost::shared_ptr<Source> > unique_srcs;
-
-	for (SourceList::const_iterator i= other->_sources.begin(); i != other->_sources.end(); ++i) {
-		_sources.push_back (*i);
-		(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		unique_srcs.insert (*i);
-	}
-	
-	if (other->_sync_position < offset) {
-		_sync_position = other->_sync_position;
-	}
-
-	for (SourceList::const_iterator i = other->_master_sources.begin(); i != other->_master_sources.end(); ++i) {
-		if (unique_srcs.find (*i) == unique_srcs.end()) {
-			(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		}
-		_master_sources.push_back (*i);
-	}
-	
-	assert(_sources.size() > 0);
-}
-
-/** Pure copy constructor */
-Region::Region (boost::shared_ptr<const Region> other)
-	: Automatable(other->session(), other->name())
-	, _type(other->data_type())
-	, _flags(Flag(other->_flags & ~(Locked|PositionLocked)))
-	, _start(other->_start) 
-	, _length(other->_length) 
-	, _position(other->_position) 
-	, _last_position(other->_last_position) 
-	, _positional_lock_style(other->_positional_lock_style)
-	, _sync_position(other->_sync_position)
-	, _layer(other->_layer)
-	, _first_edit(EditChangesID)
-	, _frozen(0)
-	, _ancestral_start (_start)
-	, _ancestral_length (_length)
-	, _stretch (1.0)
-	, _shift (0.0)
-	, _valid_transients(false)
-	, _read_data_count(0)
-	, _pending_changed(Change(0))
-	, _last_layer_op(other->_last_layer_op)
-{
-	other->_first_edit = EditChangesName;
-
-	if (other->_extra_xml) {
-		_extra_xml = new XMLNode (*other->_extra_xml);
-	} else {
-		_extra_xml = 0;
-	}
-
-	set<boost::shared_ptr<Source> > unique_srcs;
-
-	for (SourceList::const_iterator i = other->_sources.begin(); i != other->_sources.end(); ++i) {
-		_sources.push_back (*i);
-		(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		unique_srcs.insert (*i);
-	}
-
-	for (SourceList::const_iterator i = other->_master_sources.begin(); i != other->_master_sources.end(); ++i) {
-		_master_sources.push_back (*i);
-		if (unique_srcs.find (*i) == unique_srcs.end()) {
-			(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		}
-	}
-	
-	assert(_sources.size() > 0);
-}
-
-Region::Region (const SourceList& srcs, const XMLNode& node)
-	: Automatable(srcs.front()->session(), X_("error: XML did not reset this"))
-	, _type(DataType::NIL) // to be loaded from XML
-	, _flags(Flag(0))
-	, _start(0) 
-	, _length(0) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(AudioTime)
-	, _sync_position(_start)
-	, _layer(0)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _stretch(1.0)
-	, _read_data_count(0)
-	, _pending_changed(Change(0))
-	, _last_layer_op(0)
-{
-	set<boost::shared_ptr<Source> > unique_srcs;
-
-	for (SourceList::const_iterator i=srcs.begin(); i != srcs.end(); ++i) {
-		_sources.push_back (*i);
-		(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		unique_srcs.insert (*i);
-	}
-
-	for (SourceList::const_iterator i = srcs.begin(); i != srcs.end(); ++i) {
-		_master_sources.push_back (*i);
-		if (unique_srcs.find (*i) == unique_srcs.end()) {
-			(*i)->GoingAway.connect (bind (mem_fun (*this, &Region::source_deleted), (*i)));
-		}
-	}
-
-	if (set_state (node)) {
-		throw failed_constructor();
-	}
-
-	assert(_type != DataType::NIL);
-	assert(_sources.size() > 0);
-}
-
-Region::Region (boost::shared_ptr<Source> src, const XMLNode& node)
-	: Automatable(src->session(), X_("error: XML did not reset this"))
-	, _type(DataType::NIL)
-	, _flags(Flag(0))
-	, _start(0) 
-	, _length(0) 
-	, _position(0) 
-	, _last_position(0) 
-	, _positional_lock_style(AudioTime)
-	, _sync_position(_start)
-	, _layer(0)
-	, _first_edit(EditChangesNothing)
-	, _frozen(0)
-	, _stretch(1.0)
-	, _read_data_count(0)
-	, _pending_changed(Change(0))
-	, _last_layer_op(0)
-{
-	_sources.push_back (src);
-
-	if (set_state (node)) {
-		throw failed_constructor();
-	}
-	
-	assert(_type != DataType::NIL);
-	assert(_sources.size() > 0);
-}
-
-Region::~Region ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (pl) {
-		for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
-			(*i)->remove_playlist (pl);
-		}
-		for (SourceList::const_iterator i = _master_sources.begin(); i != _master_sources.end(); ++i) {
-			(*i)->remove_playlist (pl);
-		}
-	}
-	
-	notify_callbacks ();
-	GoingAway (); /* EMIT SIGNAL */
-}
-
-void
-Region::set_playlist (boost::weak_ptr<Playlist> wpl)
-{
-	boost::shared_ptr<Playlist> old_playlist = (_playlist.lock());
-
-	boost::shared_ptr<Playlist> pl (wpl.lock());
-
-	if (old_playlist == pl) {
-		return;
-	}
-
-	_playlist = pl;
-
-	if (pl) {
-		if (old_playlist) {
-			for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
-				(*i)->remove_playlist (_playlist);	
-				(*i)->add_playlist (pl);
-			}
-			for (SourceList::const_iterator i = _master_sources.begin(); i != _master_sources.end(); ++i) {
-				(*i)->remove_playlist (_playlist);	
-				(*i)->add_playlist (pl);
-			}
-		} else {
-			for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
-				(*i)->add_playlist (pl);
-			}
-			for (SourceList::const_iterator i = _master_sources.begin(); i != _master_sources.end(); ++i) {
-				(*i)->add_playlist (pl);
-			}
-		}
-	} else {
-		if (old_playlist) {
-			for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
-				(*i)->remove_playlist (old_playlist);
-			}
-			for (SourceList::const_iterator i = _master_sources.begin(); i != _master_sources.end(); ++i) {
-				(*i)->remove_playlist (old_playlist);
-			}
-		}
-	}
-}
-
-bool
-Region::set_name (const std::string& str)
-{
-	if (_name != str) {
-		SessionObject::set_name(str); // EMIT SIGNAL NameChanged()
-		assert(_name == str); 
-		send_change (ARDOUR::NameChanged);
-	}
-
-	return true;
-}
-
-void
-Region::set_length (nframes_t len, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	if (_length != len && len != 0) {
-
-		/* check that the current _position wouldn't make the new 
-		   length impossible.
-		*/
-
-		if (max_frames - len < _position) {
-			return;
-		}
-
-		if (!verify_length (len)) {
-			return;
-		}
-		
-
-		_last_length = _length;
-		_length = len;
-
-		_flags = Region::Flag (_flags & ~WholeFile);
-
-		first_edit ();
-		maybe_uncopy ();
-		invalidate_transients ();
-
-		if (!_frozen) {
-			recompute_at_end ();
-		}
-
-		send_change (LengthChanged);
-	}
-}
-
-void
-Region::maybe_uncopy ()
-{
-}
-
-void
-Region::first_edit ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (_first_edit != EditChangesNothing && pl) {
-
-		_name = pl->session().new_region_name (_name);
-		_first_edit = EditChangesNothing;
-
-		send_change (ARDOUR::NameChanged);
-		RegionFactory::CheckNewRegion (shared_from_this());
-	}
-}
-
-bool
-Region::at_natural_position () const
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (!pl) {
-		return false;
-	}
-	
-	boost::shared_ptr<Region> whole_file_region = get_parent();
-
-	if (whole_file_region) {
-		if (_position == whole_file_region->position() + _start) {
-			return true;
-		}
-	}
-
-	return false;
-}
-
-void
-Region::move_to_natural_position (void *src)
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (!pl) {
-		return;
-	}
-	
-	boost::shared_ptr<Region> whole_file_region = get_parent();
-
-	if (whole_file_region) {
-		set_position (whole_file_region->position() + _start, src);
-	}
-}
-	
-void
-Region::special_set_position (nframes_t pos)
-{
-	/* this is used when creating a whole file region as 
-	   a way to store its "natural" or "captured" position.
-	*/
-
-	_position = _position;
-	_position = pos;
-}
-
-void
-Region::set_position_lock_style (PositionLockStyle ps)
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (!pl) {
-		return;
-	}
-
-	_positional_lock_style = ps;
-
-	if (_positional_lock_style == MusicTime) {
-		pl->session().tempo_map().bbt_time (_position, _bbt_time);
-	}
-	
-}
-
-void
-Region::update_position_after_tempo_map_change ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-	
-	if (!pl || _positional_lock_style != MusicTime) {
-		return;
-	}
-
-	TempoMap& map (pl->session().tempo_map());
-	nframes_t pos = map.frame_time (_bbt_time);
-	set_position_internal (pos, false);
-}
-
-void
-Region::set_position (nframes_t pos, void *src)
-{
-	if (!can_move()) {
-		return;
-	}
-
-	set_position_internal (pos, true);
-}
-
-void
-Region::set_position_internal (nframes_t pos, bool allow_bbt_recompute)
-{
-	if (_position != pos) {
-		_last_position = _position;
-		_position = pos;
-
-		/* check that the new _position wouldn't make the current
-		   length impossible - if so, change the length. 
-
-		   XXX is this the right thing to do?
-		*/
-
-		if (max_frames - _length < _position) {
-			_last_length = _length;
-			_length = max_frames - _position;
-		}
-
-		if (allow_bbt_recompute) {
-			recompute_position_from_lock_style ();
-		}
-
-		invalidate_transients ();
-	}
-
-	/* do this even if the position is the same. this helps out
-	   a GUI that has moved its representation already.
-	*/
-
-	send_change (PositionChanged);
-}
-
-void
-Region::set_position_on_top (nframes_t pos, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	if (_position != pos) {
-		_last_position = _position;
-		_position = pos;
-	}
-
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (pl) {
-		pl->raise_region_to_top (shared_from_this ());
-	}
-
-	/* do this even if the position is the same. this helps out
-	   a GUI that has moved its representation already.
-	*/
-	
-	send_change (PositionChanged);
-}
-
-void
-Region::recompute_position_from_lock_style ()
-{
-	if (_positional_lock_style == MusicTime) {
-		boost::shared_ptr<Playlist> pl (playlist());
-		if (pl) {
-			pl->session().tempo_map().bbt_time (_position, _bbt_time);
-		}
-	}
-}
-		
-void
-Region::nudge_position (nframes64_t n, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	if (n == 0) {
-		return;
-	}
-	
-	_last_position = _position;
-
-	if (n > 0) {
-		if (_position > max_frames - n) {
-			_position = max_frames;
-		} else {
-			_position += n;
-		}
-	} else {
-		if (_position < (nframes_t) -n) {
-			_position = 0;
-		} else {
-			_position += n;
-		}
-	}
-
-	send_change (PositionChanged);
-}
-
-void
-Region::set_ancestral_data (nframes64_t s, nframes64_t l, float st, float sh)
-{
-	_ancestral_length = l;
-	_ancestral_start = s;
-	_stretch = st;
-	_shift = sh;
-}
-
-void
-Region::set_start (nframes_t pos, void *src)
-{
-	if (_flags & (Locked|PositionLocked)) {
-		return;
-	}
-	/* This just sets the start, nothing else. It effectively shifts
-	   the contents of the Region within the overall extent of the Source,
-	   without changing the Region's position or length
-	*/
-
-	if (_start != pos) {
-
-		if (!verify_start (pos)) {
-			return;
-		}
-
-		_start = pos;
-		_flags = Region::Flag (_flags & ~WholeFile);
-		first_edit ();
-		invalidate_transients ();
-
-		send_change (StartChanged);
-	}
-}
-
-void
-Region::trim_start (nframes_t new_position, void *src)
-{
-	if (_flags & (Locked|PositionLocked)) {
-		return;
-	}
-	nframes_t new_start;
-	int32_t start_shift;
-	
-	if (new_position > _position) {
-		start_shift = new_position - _position;
-	} else {
-		start_shift = -(_position - new_position);
-	}
-
-	if (start_shift > 0) {
-
-		if (_start > max_frames - start_shift) {
-			new_start = max_frames;
-		} else {
-			new_start = _start + start_shift;
-		}
-
-		if (!verify_start (new_start)) {
-			return;
-		}
-
-	} else if (start_shift < 0) {
-
-		if (_start < (nframes_t) -start_shift) {
-			new_start = 0;
-		} else {
-			new_start = _start + start_shift;
-		}
-	} else {
-		return;
-	}
-
-	if (new_start == _start) {
-		return;
-	}
-	
-	_start = new_start;
-	_flags = Region::Flag (_flags & ~WholeFile);
-	first_edit ();
-
-	send_change (StartChanged);
-}
-
-void
-Region::trim_front (nframes_t new_position, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	nframes_t end = last_frame();
-	nframes_t source_zero;
-
-	if (_position > _start) {
-		source_zero = _position - _start;
-	} else {
-		source_zero = 0; // its actually negative, but this will work for us
-	}
-
-	if (new_position < end) { /* can't trim it zero or negative length */
-		
-		nframes_t newlen;
-
-		/* can't trim it back passed where source position zero is located */
-		
-		new_position = max (new_position, source_zero);
-		
-		
-		if (new_position > _position) {
-			newlen = _length - (new_position - _position);
-		} else {
-			newlen = _length + (_position - new_position);
-		}
-		
-		trim_to_internal (new_position, newlen, src);
-		if (!_frozen) {
-			recompute_at_start ();
-		}
-	}
-}
-
-void
-Region::trim_end (nframes_t new_endpoint, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	if (new_endpoint > _position) {
-		trim_to_internal (_position, new_endpoint - _position, this);
-		if (!_frozen) {
-			recompute_at_end ();
-		}
-	}
-}
-
-void
-Region::trim_to (nframes_t position, nframes_t length, void *src)
-{
-	if (_flags & Locked) {
-		return;
-	}
-
-	trim_to_internal (position, length, src);
-
-	if (!_frozen) {
-		recompute_at_start ();
-		recompute_at_end ();
-	}
-}
-
-void
-Region::trim_to_internal (nframes_t position, nframes_t length, void *src)
-{
-	int32_t start_shift;
-	nframes_t new_start;
-
-	if (_flags & Locked) {
-		return;
-	}
-
-	if (position > _position) {
-		start_shift = position - _position;
-	} else {
-		start_shift = -(_position - position);
-	}
-
-	if (start_shift > 0) {
-
-		if (_start > max_frames - start_shift) {
-			new_start = max_frames;
-		} else {
-			new_start = _start + start_shift;
-		}
-
-
-	} else if (start_shift < 0) {
-
-		if (_start < (nframes_t) -start_shift) {
-			new_start = 0;
-		} else {
-			new_start = _start + start_shift;
-		}
-	} else {
-		new_start = _start;
-	}
-
-	if (!verify_start_and_length (new_start, length)) {
-		return;
-	}
-
-	Change what_changed = Change (0);
-
-	if (_start != new_start) {
-		_start = new_start;
-		what_changed = Change (what_changed|StartChanged);
-	}
-	if (_length != length) {
-		if (!_frozen) {
-			_last_length = _length;
-		}
-		_length = length;
-		what_changed = Change (what_changed|LengthChanged);
-	}
-	if (_position != position) {
-		if (!_frozen) {
-			_last_position = _position;
-		}
-		_position = position;
-		what_changed = Change (what_changed|PositionChanged);
-	}
-	
-	_flags = Region::Flag (_flags & ~WholeFile);
-
-	if (what_changed & (StartChanged|LengthChanged)) {
-		first_edit ();
-	} 
-
-	if (what_changed) {
-		send_change (what_changed);
-	}
-}	
-
-void
-Region::set_hidden (bool yn)
-{
-	if (hidden() != yn) {
-
-		if (yn) {
-			_flags = Flag (_flags|Hidden);
-		} else {
-			_flags = Flag (_flags & ~Hidden);
-		}
-
-		send_change (HiddenChanged);
-	}
-}
-
-void
-Region::set_muted (bool yn)
-{
-	if (muted() != yn) {
-
-		if (yn) {
-			_flags = Flag (_flags|Muted);
-		} else {
-			_flags = Flag (_flags & ~Muted);
-		}
-
-		send_change (MuteChanged);
-	}
-}
-
-void
-Region::set_opaque (bool yn)
-{
-	if (opaque() != yn) {
-		if (yn) {
-			_flags = Flag (_flags|Opaque);
-		} else {
-			_flags = Flag (_flags & ~Opaque);
-		}
-		send_change (OpacityChanged);
-	}
-}
-
-void
-Region::set_locked (bool yn)
-{
-	if (locked() != yn) {
-		if (yn) {
-			_flags = Flag (_flags|Locked);
-		} else {
-			_flags = Flag (_flags & ~Locked);
-		}
-		send_change (LockChanged);
-	}
-}
-
-void
-Region::set_position_locked (bool yn)
-{
-	if (position_locked() != yn) {
-		if (yn) {
-			_flags = Flag (_flags|PositionLocked);
-		} else {
-			_flags = Flag (_flags & ~PositionLocked);
-		}
-		send_change (LockChanged);
-	}
-}
-
-void
-Region::set_sync_position (nframes_t absolute_pos)
-{
-	nframes_t file_pos;
-
-	file_pos = _start + (absolute_pos - _position);
-
-	if (file_pos != _sync_position) {
-		
-		_sync_position = file_pos;
-		_flags = Flag (_flags|SyncMarked);
-
-		if (!_frozen) {
-			maybe_uncopy ();
-		}
-		send_change (SyncOffsetChanged);
-	}
-}
-
-void
-Region::clear_sync_position ()
-{
-	if (_flags & SyncMarked) {
-		_flags = Flag (_flags & ~SyncMarked);
-
-		if (!_frozen) {
-			maybe_uncopy ();
-		}
-		send_change (SyncOffsetChanged);
-	}
-}
-
-nframes_t
-Region::sync_offset (int& dir) const
-{
-	/* returns the sync point relative the first frame of the region */
-
-	if (_flags & SyncMarked) {
-		if (_sync_position > _start) {
-			dir = 1;
-			return _sync_position - _start; 
-		} else {
-			dir = -1;
-			return _start - _sync_position;
-		}
-	} else {
-		dir = 0;
-		return 0;
-	}
-}
-
-nframes_t 
-Region::adjust_to_sync (nframes_t pos)
-{
-	int sync_dir;
-	nframes_t offset = sync_offset (sync_dir);
-
-	// cerr << "adjusting pos = " << pos << " to sync at " << _sync_position << " offset = " << offset << " with dir = " << sync_dir << endl;
-	
-	if (sync_dir > 0) {
-		if (pos > offset) {
-			pos -= offset;
-		} else {
-			pos = 0;
-		}
-	} else {
-		if (max_frames - pos > offset) {
-			pos += offset;
-		}
-	}
-
-	return pos;
-}
-
-nframes_t
-Region::sync_position() const
-{
-	if (_flags & SyncMarked) {
-		return _sync_position; 
-	} else {
-		return _start;
-	}
-}
-
-void
-Region::raise ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-	if (pl) {
-		pl->raise_region (shared_from_this ());
-	}
-}
-
-void
-Region::lower ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-	if (pl) {
-		pl->lower_region (shared_from_this ());
-	}
-}
-
-
-void
-Region::raise_to_top ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-	if (pl) {
-		pl->raise_region_to_top (shared_from_this());
-	}
-}
-
-void
-Region::lower_to_bottom ()
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-	if (pl) {
-		pl->lower_region_to_bottom (shared_from_this());
-	}
-}
-
-void
-Region::set_layer (layer_t l)
-{
-	if (_layer != l) {
-		_layer = l;
-		
-		send_change (LayerChanged);
-	}
-}
-
-XMLNode&
-Region::state (bool full_state)
-{
-	XMLNode *node = new XMLNode ("Region");
-	char buf[64];
-	const char* fe = NULL;
-
-	_id.print (buf, sizeof (buf));
-	node->add_property ("id", buf);
-	node->add_property ("name", _name);
-	node->add_property ("type", _type.to_string());
-	snprintf (buf, sizeof (buf), "%u", _start);
-	node->add_property ("start", buf);
-	snprintf (buf, sizeof (buf), "%u", _length);
-	node->add_property ("length", buf);
-	snprintf (buf, sizeof (buf), "%u", _position);
-	node->add_property ("position", buf);
-	snprintf (buf, sizeof (buf), "%" PRIi64, _ancestral_start);
-	node->add_property ("ancestral-start", buf);
-	snprintf (buf, sizeof (buf), "%" PRIi64, _ancestral_length);
-	node->add_property ("ancestral-length", buf);
-	snprintf (buf, sizeof (buf), "%.12g", _stretch);
-	node->add_property ("stretch", buf);
-	snprintf (buf, sizeof (buf), "%.12g", _shift);
-	node->add_property ("shift", buf);
-	
-	switch (_first_edit) {
-	case EditChangesNothing:
-		fe = X_("nothing");
-		break;
-	case EditChangesName:
-		fe = X_("name");
-		break;
-	case EditChangesID:
-		fe = X_("id");
-		break;
-	default: /* should be unreachable but makes g++ happy */
-		fe = X_("nothing");
-		break;
-	}
-
-	node->add_property ("first_edit", fe);
-
-	/* note: flags are stored by derived classes */
-
-	snprintf (buf, sizeof (buf), "%d", (int) _layer);
-	node->add_property ("layer", buf);
-	snprintf (buf, sizeof (buf), "%" PRIu32, _sync_position);
-	node->add_property ("sync-position", buf);
-
-	if (_positional_lock_style != AudioTime) {
-		node->add_property ("positional-lock-style", enum_2_string (_positional_lock_style));
-		stringstream str;
-		str << _bbt_time;
-		node->add_property ("bbt-position", str.str());
-	}
-
-	return *node;
-}
-
-XMLNode&
-Region::get_state ()
-{
-	return state (true);
-}
-
-int
-Region::set_live_state (const XMLNode& node, Change& what_changed, bool send)
-{
-	const XMLNodeList& nlist = node.children();
-	const XMLProperty *prop;
-	nframes_t val;
-
-	/* this is responsible for setting those aspects of Region state 
-	   that are mutable after construction.
-	*/
-
-	if ((prop = node.property ("name")) == 0) {
-		error << _("XMLNode describing a Region is incomplete (no name)") << endmsg;
-		return -1;
-	}
-
-	_name = prop->value();
-	
-	if ((prop = node.property ("type")) == 0) {
-		_type = DataType::AUDIO;
-	} else {
-		_type = DataType(prop->value());
-	}
-
-	if ((prop = node.property ("start")) != 0) {
-		sscanf (prop->value().c_str(), "%" PRIu32, &val);
-		if (val != _start) {
-			what_changed = Change (what_changed|StartChanged);	
-			_start = val;
-		}
-	} else {
-		_start = 0;
-	}
-
-	if ((prop = node.property ("length")) != 0) {
-		sscanf (prop->value().c_str(), "%" PRIu32, &val);
-		if (val != _length) {
-			what_changed = Change (what_changed|LengthChanged);
-			_last_length = _length;
-			_length = val;
-		}
-	} else {
-		_last_length = _length;
-		_length = 1;
-	}
-
-	if ((prop = node.property ("position")) != 0) {
-		sscanf (prop->value().c_str(), "%" PRIu32, &val);
-		if (val != _position) {
-			what_changed = Change (what_changed|PositionChanged);
-			_last_position = _position;
-			_position = val;
-		}
-	} else {
-		_last_position = _position;
-		_position = 0;
-	}
-
-	if ((prop = node.property ("layer")) != 0) {
-		layer_t x;
-		x = (layer_t) atoi (prop->value().c_str());
-		if (x != _layer) {
-			what_changed = Change (what_changed|LayerChanged);
-			_layer = x;
-		}
-	} else {
-		_layer = 0;
-	}
-
-	if ((prop = node.property ("sync-position")) != 0) {
-		sscanf (prop->value().c_str(), "%" PRIu32, &val);
-		if (val != _sync_position) {
-			what_changed = Change (what_changed|SyncOffsetChanged);
-			_sync_position = val;
-		}
-	} else {
-		_sync_position = _start;
-	}
-
-	if ((prop = node.property ("positional-lock-style")) != 0) {
-		_positional_lock_style = PositionLockStyle (string_2_enum (prop->value(), _positional_lock_style));
-
-		if (_positional_lock_style == MusicTime) {
-			if ((prop = node.property ("bbt-position")) == 0) {
-				/* missing BBT info, revert to audio time locking */
-				_positional_lock_style = AudioTime;
-			} else {
-				if (sscanf (prop->value().c_str(), "%d|%d|%d", 
-					    &_bbt_time.bars,
-					    &_bbt_time.beats,
-					    &_bbt_time.ticks) != 3) {
-					_positional_lock_style = AudioTime;
-				}
-			}
-		}
-			
-	} else {
-		_positional_lock_style = AudioTime;
-	}
-
-	/* XXX FIRST EDIT !!! */
-	
-	/* these 3 properties never change as a result of any editing */
-
-	if ((prop = node.property ("ancestral-start")) != 0) {
-		_ancestral_start = atoi (prop->value());
-	} else {
-		_ancestral_start = _start;
-	}
-
-	if ((prop = node.property ("ancestral-length")) != 0) {
-		_ancestral_length = atoi (prop->value());
-	} else {
-		_ancestral_length = _length;
-	}
-
-	if ((prop = node.property ("stretch")) != 0) {
-		_stretch = atof (prop->value());
-	} else {
-		_stretch = 1.0;
-	}
-
-	if ((prop = node.property ("shift")) != 0) {
-		_shift = atof (prop->value());
-	} else {
-		_shift = 1.0;
-	}
-
-	/* note: derived classes set flags */
-
-	if (_extra_xml) {
-		delete _extra_xml;
-		_extra_xml = 0;
-	}
-
-	for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
-		
-		XMLNode *child;
-		
-		child = (*niter);
-		
-		if (child->name () == "extra") {
-			_extra_xml = new XMLNode (*child);
-			break;
-		}
-	}
-
-	if (send) {
-		send_change (what_changed);
-	}
-
-	return 0;
-}
-
-int
-Region::set_state (const XMLNode& node)
-{
-	const XMLProperty *prop;
-	Change what_changed = Change (0);
-
-	/* ID is not allowed to change, ever */
-
-	if ((prop = node.property ("id")) == 0) {
-		error << _("Session: XMLNode describing a Region is incomplete (no id)") << endmsg;
-		return -1;
-	}
-
-	_id = prop->value();
-	
-	_first_edit = EditChangesNothing;
-	
-	set_live_state (node, what_changed, true);
-
-	return 0;
-}
-
-void
-Region::freeze ()
-{
-	_frozen++;
-	_last_length = _length;
-	_last_position = _position;
-}
-
-void
-Region::thaw (const string& why)
-{
-	Change what_changed = Change (0);
-
-	{
-		Glib::Mutex::Lock lm (_lock);
-
-		if (_frozen && --_frozen > 0) {
-			return;
-		}
-
-		if (_pending_changed) {
-			what_changed = _pending_changed;
-			_pending_changed = Change (0);
-		}
-	}
-
-	if (what_changed == Change (0)) {
-		return;
-	}
-
-	if (what_changed & LengthChanged) {
-		if (what_changed & PositionChanged) {
-			recompute_at_start ();
-		} 
-		recompute_at_end ();
-	}
-		
-	StateChanged (what_changed);
-}
-
-void
-Region::send_change (Change what_changed)
-{
-	{
-		Glib::Mutex::Lock lm (_lock);
-		if (_frozen) {
-			_pending_changed = Change (_pending_changed|what_changed);
-			return;
-		} 
-	}
-
-	StateChanged (what_changed);
-}
-
-void
-Region::set_last_layer_op (uint64_t when)
-{
-	_last_layer_op = when;
-}
-
-bool
-Region::overlap_equivalent (boost::shared_ptr<const Region> other) const
-{
-	return coverage (other->first_frame(), other->last_frame()) != OverlapNone;
-}
-
-bool
-Region::equivalent (boost::shared_ptr<const Region> other) const
-{
-	return _start == other->_start &&
-		_position == other->_position &&
-		_length == other->_length;
-}
-
-bool
-Region::size_equivalent (boost::shared_ptr<const Region> other) const
-{
-	return _start == other->_start &&
-		_length == other->_length;
-}
-
-bool
-Region::region_list_equivalent (boost::shared_ptr<const Region> other) const
-{
-	return size_equivalent (other) && source_equivalent (other) && _name == other->_name;
-}
-
-void
-Region::source_deleted (boost::shared_ptr<Source>)
-{
-	_sources.clear ();
-	drop_references ();
-}
-
-vector<string>
-Region::master_source_names ()
-{
-	SourceList::iterator i;
-
-	vector<string> names;
-	for (i = _master_sources.begin(); i != _master_sources.end(); ++i) {
-		names.push_back((*i)->name());
-	}
-
-	return names;
-}
-
-void
-Region::set_master_sources (SourceList& srcs)
-{
-	_master_sources = srcs;
-}
-
-bool
-Region::source_equivalent (boost::shared_ptr<const Region> other) const
-{
-	if (!other)
-		return false;
-
-	SourceList::const_iterator i;
-	SourceList::const_iterator io;
-
-	for (i = _sources.begin(), io = other->_sources.begin(); i != _sources.end() && io != other->_sources.end(); ++i, ++io) {
-		if ((*i)->id() != (*io)->id()) {
-			return false;
-		}
-	}
-
-	for (i = _master_sources.begin(), io = other->_master_sources.begin(); i != _master_sources.end() && io != other->_master_sources.end(); ++i, ++io) {
-		if ((*i)->id() != (*io)->id()) {
-			return false;
-		}
-	}
-
-	return true;
-}
-
-bool
-Region::verify_length (nframes_t len)
-{
-	if (source() && (source()->destructive() || source()->length_mutable())) {
-		return true;
-	}
-
-	nframes_t maxlen = 0;
-
-	for (uint32_t n=0; n < _sources.size(); ++n) {
-		maxlen = max (maxlen, _sources[n]->length() - _start);
-	}
-	
-	len = min (len, maxlen);
-	
-	return true;
-}
-
-bool
-Region::verify_start_and_length (nframes_t new_start, nframes_t& new_length)
-{
-	if (source() && (source()->destructive() || source()->length_mutable())) {
-		return true;
-	}
-
-	nframes_t maxlen = 0;
-
-	for (uint32_t n=0; n < _sources.size(); ++n) {
-		maxlen = max (maxlen, _sources[n]->length() - new_start);
-	}
-
-	new_length = min (new_length, maxlen);
-
-	return true;
-}
-
-bool
-Region::verify_start (nframes_t pos)
-{
-	if (source() && (source()->destructive() || source()->length_mutable())) {
-		return true;
-	}
-
-	for (uint32_t n=0; n < _sources.size(); ++n) {
-		if (pos > _sources[n]->length() - _length) {
-			return false;
-		}
-	}
-	return true;
-}
-
-bool
-Region::verify_start_mutable (nframes_t& new_start)
-{
-	if (source() && (source()->destructive() || source()->length_mutable())) {
-		return true;
-	}
-
-	for (uint32_t n=0; n < _sources.size(); ++n) {
-		if (new_start > _sources[n]->length() - _length) {
-			new_start = _sources[n]->length() - _length;
-		}
-	}
-	return true;
-}
-
-boost::shared_ptr<Region>
-Region::get_parent() const
-{
-	boost::shared_ptr<Playlist> pl (playlist());
-
-	if (pl) {
-		boost::shared_ptr<Region> r;
-		boost::shared_ptr<Region const> grrr2 = boost::dynamic_pointer_cast<Region const> (shared_from_this());
-		
-		if (grrr2 && (r = pl->session().find_whole_file_parent (grrr2))) {
-			return boost::static_pointer_cast<Region> (r);
-		}
-	}
-	
-	return boost::shared_ptr<Region>();
-}
-
-int
-Region::apply (Filter& filter)
-{
-	return filter.run (shared_from_this());
-}
-
-
-void
-Region::invalidate_transients ()
-{
-	_valid_transients = false;
-	_transients.clear ();
-}
-