Make the session start/end location a single location (with start and end) rather than two separate ones. Fixes #1298.

git-svn-id: svn://localhost/ardour2/branches/3.0@6929 d708f5d6-7413-0410-9779-e7cbd77b26cf

8 files changed, 51 insertions, 104 deletions

diff --git a/libs/ardour/ardour/location.h b/libs/ardour/ardour/location.h
index 938177b102..c0711e0c9b 100644
--- a/libs/ardour/ardour/location.h
+++ b/libs/ardour/ardour/location.h
@@ -46,9 +46,8 @@ class Location : public PBD::StatefulDestructible
 		IsAutoLoop = 0x4,
 		IsHidden = 0x8,
 		IsCDMarker = 0x10,
-		IsEnd = 0x20,
-		IsRangeMarker = 0x40,
-		IsStart = 0x80
+		IsRangeMarker = 0x20,
+		IsSessionRange = 0x40
 	};
 
 	Location (nframes64_t sample_start,
@@ -94,8 +93,7 @@ class Location : public PBD::StatefulDestructible
 	void set_auto_loop (bool yn, void *src);
 	void set_hidden (bool yn, void *src);
 	void set_cd (bool yn, void *src);
-	void set_is_end (bool yn, void* src);
-	void set_is_start (bool yn, void* src);
+	void set_is_session_range (bool yn, void* src);
 	void set_is_range_marker (bool yn, void* src);
 
 	bool is_auto_punch () const { return _flags & IsAutoPunch; }
@@ -103,8 +101,7 @@ class Location : public PBD::StatefulDestructible
 	bool is_mark () const { return _flags & IsMark; }
 	bool is_hidden () const { return _flags & IsHidden; }
 	bool is_cd_marker () const { return _flags & IsCDMarker; }
-	bool is_end() const { return _flags & IsEnd; }
-	bool is_start() const { return _flags & IsStart; }
+	bool is_session_range () const { return _flags & IsSessionRange; }
 	bool is_range_marker() const { return _flags & IsRangeMarker; }
 	bool matches (Flags f) const { return _flags & f; }
 
@@ -159,8 +156,7 @@ class Locations : public PBD::StatefulDestructible
 
 	Location* auto_loop_location () const;
 	Location* auto_punch_location () const;
-	Location* end_location() const;
-	Location* start_location() const;
+	Location* session_range_location() const;
 
 	int next_available_name(std::string& result,std::string base);
 	uint32_t num_range_markers() const;
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index b5c818e6a2..81536169a6 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -299,10 +299,10 @@ class Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionLi
 	bool get_play_loop () const { return play_loop; }
 
 	nframes_t  last_transport_start() const { return _last_roll_location; }
-	void goto_end ()   { request_locate (end_location->start(), false);}
-	void goto_start () { request_locate (start_location->start(), false); }
-	void set_session_start (nframes_t start) { start_location->set_start(start); }
-	void set_session_end (nframes_t end) { end_location->set_start(end); config.set_end_marker_is_free (false); }
+	void goto_end ()   { request_locate (_session_range_location->end(), false);}
+	void goto_start () { request_locate (_session_range_location->start(), false); }
+	void set_session_start (nframes_t start) { _session_range_location->set_start(start); }
+	void set_session_end (nframes_t end) { _session_range_location->set_end(end); config.set_end_marker_is_free (false); }
 	void use_rf_shuttle_speed ();
 	void allow_auto_play (bool yn);
 	void request_transport_speed (double speed);
@@ -316,8 +316,8 @@ class Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionLi
 	int wipe ();
 
 	nframes_t get_maximum_extent () const;
-	nframes_t current_end_frame() const { return end_location->start(); }
-	nframes_t current_start_frame() const { return start_location->start(); }
+	nframes_t current_end_frame() const { return _session_range_location->end(); }
+	nframes_t current_start_frame() const { return _session_range_location->start(); }
 	/// "actual" sample rate of session, set by current audioengine rate, pullup/down etc.
 	nframes_t frame_rate() const   { return _current_frame_rate; }
 	/// "native" sample rate of session, regardless of current audioengine rate, pullup/down etc
@@ -845,8 +845,7 @@ class Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionLi
 	int                      transport_sub_state;
 	mutable gint            _record_status;
 	volatile nframes64_t    _transport_frame;
-	Location*                end_location;
-	Location*                start_location;
+	Location*               _session_range_location;
 	Slave*                  _slave;
 	bool                    _silent;
 
diff --git a/libs/ardour/enums.cc b/libs/ardour/enums.cc
index df6eb360d1..a758804564 100644
--- a/libs/ardour/enums.cc
+++ b/libs/ardour/enums.cc
@@ -400,9 +400,8 @@ setup_enum_writer ()
 	REGISTER_CLASS_ENUM (Location, IsAutoLoop);
 	REGISTER_CLASS_ENUM (Location, IsHidden);
 	REGISTER_CLASS_ENUM (Location, IsCDMarker);
-	REGISTER_CLASS_ENUM (Location, IsEnd);
+	REGISTER_CLASS_ENUM (Location, IsSessionRange);
 	REGISTER_CLASS_ENUM (Location, IsRangeMarker);
-	REGISTER_CLASS_ENUM (Location, IsStart);
 	REGISTER_BITS (_Location_Flags);
 
 	REGISTER_CLASS_ENUM (Panner, SameDirection);
diff --git a/libs/ardour/export_handler.cc b/libs/ardour/export_handler.cc
index cf6fced74c..7893d8143c 100644
--- a/libs/ardour/export_handler.cc
+++ b/libs/ardour/export_handler.cc
@@ -290,7 +290,7 @@ ExportHandler::export_cd_marker_file (TimespanPtr timespan, FormatPtr file_forma
 	Locations::LocationList temp;
 
 	for (i = locations.begin(); i != locations.end(); ++i) {
-		if ((*i)->start() >= timespan->get_start() && (*i)->end() <= timespan->get_end() && (*i)->is_cd_marker() && !(*i)->is_end()) {
+		if ((*i)->start() >= timespan->get_start() && (*i)->end() <= timespan->get_end() && (*i)->is_cd_marker() && !(*i)->is_session_range()) {
 			temp.push_back (*i);
 		}
 	}
diff --git a/libs/ardour/location.cc b/libs/ardour/location.cc
index 4861718d85..ec2059a41f 100644
--- a/libs/ardour/location.cc
+++ b/libs/ardour/location.cc
@@ -49,11 +49,6 @@ Location::Location (const Location& other)
 	  _end (other._end),
 	  _flags (other._flags)
 {
-	/* start and end flags can never be copied, because there can only ever be one of each */
-
-	_flags = Flags (_flags & ~IsStart);
-	_flags = Flags (_flags & ~IsEnd);
-
 	/* copy is not locked even if original was */
 
 	_locked = false;
@@ -103,18 +98,15 @@ Location::set_start (nframes64_t s)
 			start_changed(this); /* EMIT SIGNAL */
 			end_changed(this); /* EMIT SIGNAL */
 
-			if ( is_start() ) {
-
-				Session::StartTimeChanged (); /* EMIT SIGNAL */
-				AudioFileSource::set_header_position_offset ( s );
-			}
-
-			if ( is_end() ) {
-				Session::EndTimeChanged (); /* EMIT SIGNAL */
-			}
 		}
 		return 0;
 	}
+	
+	if (is_session_range()) {
+		start_changed (this); /* EMIT SIGNAL */
+		Session::StartTimeChanged (); /* EMIT SIGNAL */
+		AudioFileSource::set_header_position_offset (s);
+	}
 
 	if (((is_auto_punch() || is_auto_loop()) && s >= _end) || s > _end) {
 		return -1;
@@ -141,19 +133,16 @@ Location::set_end (nframes64_t e)
 			_end = e;
 			start_changed(this); /* EMIT SIGNAL */
 			end_changed(this); /* EMIT SIGNAL */
-
-			if ( is_start() ) {
-				Session::StartTimeChanged (); /* EMIT SIGNAL */
-			}
-
-			if ( is_end() ) {
-				Session::EndTimeChanged (); /* EMIT SIGNAL */
-			}
-
 		}
 		return 0;
 	}
 
+	if (is_session_range()) {
+		_end = e;
+		end_changed (this); /* EMIT SIGNAL */
+		Session::EndTimeChanged (); /* EMIT SIGNAL */
+	}
+
 	if (((is_auto_punch() || is_auto_loop()) && e <= _start) || e < _start) {
 		return -1;
 	}
@@ -232,17 +221,9 @@ Location::set_cd (bool yn, void *src)
 }
 
 void
-Location::set_is_end (bool yn, void *src)
+Location::set_is_session_range (bool yn, void *src)
 {
-	if (set_flag_internal (yn, IsEnd)) {
-		 FlagsChanged (this, src); /* EMIT SIGNAL */
-	}
-}
-
-void
-Location::set_is_start (bool yn, void *src)
-{
-	if (set_flag_internal (yn, IsStart)) {
+	if (set_flag_internal (yn, IsSessionRange)) {
 		 FlagsChanged (this, src); /* EMIT SIGNAL */
 	}
 }
@@ -531,7 +512,7 @@ Locations::clear ()
 			LocationList::iterator tmp = i;
 			++tmp;
 
-			if (!(*i)->is_end() && !(*i)->is_start()) {
+			if (!(*i)->is_session_range()) {
 				locations.erase (i);
 			}
 
@@ -556,7 +537,7 @@ Locations::clear_markers ()
 			tmp = i;
 			++tmp;
 
-			if ((*i)->is_mark() && !(*i)->is_end() && !(*i)->is_start()) {
+			if ((*i)->is_mark() && !(*i)->is_session_range()) {
 				locations.erase (i);
 			}
 
@@ -621,7 +602,7 @@ Locations::remove (Location *loc)
 	bool was_current = false;
 	LocationList::iterator i;
 
-	if (loc->is_end() || loc->is_start()) {
+	if (loc->is_session_range()) {
 		return;
 	}
 
@@ -848,21 +829,10 @@ Locations::marks_either_side (nframes64_t const frame, nframes64_t& before, nfra
 }
 
 Location*
-Locations::end_location () const
-{
-	for (LocationList::const_iterator i = locations.begin(); i != locations.end(); ++i) {
-		if ((*i)->is_end()) {
-			return const_cast<Location*> (*i);
-		}
-	}
-	return 0;
-}
-
-Location*
-Locations::start_location () const
+Locations::session_range_location () const
 {
 	for (LocationList::const_iterator i = locations.begin(); i != locations.end(); ++i) {
-		if ((*i)->is_start()) {
+		if ((*i)->is_session_range()) {
 			return const_cast<Location*> (*i);
 		}
 	}
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 11832646c8..9da481e7ce 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -712,9 +712,9 @@ Session::hookup_io ()
 void
 Session::playlist_length_changed ()
 {
-	/* we can't just increase end_location->end() if pl->get_maximum_extent()
+	/* we can't just increase session_range_location->end() if pl->get_maximum_extent()
 	   if larger. if the playlist used to be the longest playlist,
-	   and its now shorter, we have to decrease end_location->end(). hence,
+	   and its now shorter, we have to decrease session_range_location->end(). hence,
 	   we have to iterate over all diskstreams and check the
 	   playlists currently in use.
 	*/
@@ -954,11 +954,8 @@ Session::handle_locations_changed (Locations::LocationList& locations)
 			set_loop = true;
 		}
 
-		if (location->is_start()) {
-			start_location = location;
-		}
-		if (location->is_end()) {
-			end_location = location;
+		if (location->is_session_range()) {
+			_session_range_location = location;
 		}
 	}
 
@@ -2376,8 +2373,8 @@ Session::find_current_end ()
 
 	nframes_t max = get_maximum_extent ();
 
-	if (max > end_location->end()) {
-		end_location->set_end (max);
+	if (max > _session_range_location->end()) {
+		_session_range_location->set_end (max);
 		set_dirty();
 		DurationChanged(); /* EMIT SIGNAL */
 	}
diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index 1f116d82bc..211660c1f7 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -178,8 +178,7 @@ Session::first_stage_init (string fullpath, string snapshot_name)
 	transport_sub_state = 0;
 	_transport_frame = 0;
 	_requested_return_frame = -1;
-	end_location = new Location (0, 0, _("end"), Location::Flags ((Location::IsMark|Location::IsEnd)));
-	start_location = new Location (0, 0, _("start"), Location::Flags ((Location::IsMark|Location::IsStart)));
+	_session_range_location = new Location (0, 0, _("session"), Location::Flags (Location::IsSessionRange));
 	g_atomic_int_set (&_record_status, Disabled);
 	loop_changing = false;
 	play_loop = false;
@@ -538,11 +537,8 @@ Session::create (const string& mix_template, nframes_t initial_length, BusProfil
 
 	/* set initial start + end point */
 
-	start_location->set_end (0);
-	_locations.add (start_location);
-
-	end_location->set_end (initial_length);
-	_locations.add (end_location);
+	_session_range_location->set (0, initial_length);
+	_locations.add (_session_range_location);
 
 	_state_of_the_state = Clean;
         
@@ -1094,12 +1090,9 @@ Session::state(bool full_state)
 		// for a template, just create a new Locations, populate it
 		// with the default start and end, and get the state for that.
 		Locations loc;
-		Location* start = new Location(0, 0, _("start"), Location::Flags ((Location::IsMark|Location::IsStart)));
-		Location* end = new Location(0, 0, _("end"), Location::Flags ((Location::IsMark|Location::IsEnd)));
-		start->set_end(0);
-		loc.add (start);
-		end->set_end(compute_initial_length());
-		loc.add (end);
+		Location* range = new Location (0, 0, _("session"), Location::Flags (Location::IsSessionRange));
+		range->set (0, compute_initial_length ());
+		loc.add (range);
 		node->add_child_nocopy (loc.get_state());
 	}
 
@@ -1290,21 +1283,14 @@ Session::set_state (const XMLNode& node, int version)
 		set_auto_punch_location (location);
 	}
 
-	if ((location = _locations.end_location()) == 0) {
-		_locations.add (end_location);
-	} else {
-		delete end_location;
-		end_location = location;
-	}
-
-	if ((location = _locations.start_location()) == 0) {
-		_locations.add (start_location);
+	if ((location = _locations.session_range_location()) == 0) {
+		_locations.add (_session_range_location);
 	} else {
-		delete start_location;
-		start_location = location;
+		delete _session_range_location;
+		_session_range_location = location;
 	}
 
-	AudioFileSource::set_header_position_offset (start_location->start());
+	AudioFileSource::set_header_position_offset (_session_range_location->start());
 
 	if ((child = find_named_node (node, "Sources")) == 0) {
 		error << _("Session: XML state has no sources section") << endmsg;
diff --git a/libs/ardour/session_transport.cc b/libs/ardour/session_transport.cc
index 12dc1c3d3d..9077ba7cac 100644
--- a/libs/ardour/session_transport.cc
+++ b/libs/ardour/session_transport.cc
@@ -400,7 +400,7 @@ Session::non_realtime_stop (bool abort, int on_entry, bool& finished)
 	if (did_record) {
 		begin_reversible_command ("capture");
 
-		Location* loc = _locations.end_location();
+		Location* loc = _locations.session_range_location();
 		bool change_end = false;
 
 		if (_transport_frame < loc->end()) {