Fix note delete crash bug.

Fix midi recording crash bug.


git-svn-id: svn://localhost/ardour2/trunk@2216 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/midi_region_view.cc

@@ -61,6 +61,7 @@ MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &
 				  Gdk::Color& basic_color)
 	: RegionView (parent, tv, r, spu, basic_color)
 	, _active_notes(0)
+	, _delta_command(NULL)
 	, _command_mode(None)
 {
 }
@@ -69,6 +70,7 @@ MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &
 				  Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
 	: RegionView (parent, tv, r, spu, basic_color, visibility)
 	, _active_notes(0)
+	, _delta_command(NULL)
 	, _command_mode(None)
 {
 }
@@ -76,6 +78,9 @@ MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &
 void
 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 {
+	if (wfd)
+		midi_region()->midi_source(0)->load_model();
+
 	_model = midi_region()->midi_source(0)->model();
 	_enable_display = false;
 	

gtk2_ardour/midi_streamview.cc

@@ -108,8 +108,10 @@ MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
 	
 	/* follow global waveform setting */
 
-	if (wfd)
+	if (wfd) {
 		region_view->enable_display(true);
+		region_view->midi_region()->midi_source(0)->load_model();
+	}
 
 	/* display events and find note range */
 	display_region(region_view);
@@ -134,10 +136,12 @@ MidiStreamView::display_region(MidiRegionView* region_view)
 	boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 	source->load_model();
 
-	// Find our note range
-	for (size_t i=0; i < source->model()->n_notes(); ++i) {
-		const MidiModel::Note& note = source->model()->note_at(i);
-		update_bounds(note.note());
+	if (source->model()) {
+		// Find our note range
+		for (size_t i=0; i < source->model()->n_notes(); ++i) {
+			const MidiModel::Note& note = source->model()->note_at(i);
+			update_bounds(note.note());
+		}
 	}
 	
 	// Display region contents
@@ -151,8 +155,15 @@ MidiStreamView::redisplay_diskstream ()
 	list<RegionView *>::iterator i, tmp;
 
 	for (i = region_views.begin(); i != region_views.end(); ++i) {
-		(*i)->enable_display(false);
+		(*i)->enable_display(true); // FIXME: double display
 		(*i)->set_valid (false);
+		
+		/* FIXME: slow.  MidiRegionView needs a find_note_range method
+		 * that finds the range without wasting time drawing the events */
+
+		// Load model if it isn't already, to get note range
+		MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
+		mrv->midi_region()->midi_source(0)->load_model();
 	}
 	
 	//_lowest_note = 60; // middle C

libs/ardour/ardour/midi_source.h

@@ -90,6 +90,7 @@ class MidiSource : public Source
 
 	boost::shared_ptr<MidiModel> _model;
 	bool                         _model_loaded;
+	bool                         _writing;
 
   private:
 	bool file_changed (string path);

libs/ardour/midi_source.cc

@@ -46,6 +46,7 @@ MidiSource::MidiSource (Session& s, string name)
 	: Source (s, name, DataType::MIDI)
 	, _model(new MidiModel(s))
 	, _model_loaded (false)
+	, _writing (false)
 {
 	_read_data_count = 0;
 	_write_data_count = 0;
@@ -55,6 +56,7 @@ MidiSource::MidiSource (Session& s, const XMLNode& node)
 	: Source (s, node)
 	, _model(new MidiModel(s))
 	, _model_loaded (false)
+	, _writing (false)
 {
 	_read_data_count = 0;
 	_write_data_count = 0;
@@ -131,6 +133,8 @@ MidiSource::mark_streaming_midi_write_started (NoteMode mode)
 		_model->set_note_mode(mode);
 		_model->start_write();
 	}
+	
+	_writing = true;
 }
 
 void
@@ -138,6 +142,8 @@ MidiSource::mark_streaming_write_started ()
 {
 	if (_model)
 		_model->start_write();
+
+	_writing = true;
 }
 
 void
@@ -145,5 +151,7 @@ MidiSource::mark_streaming_write_completed ()
 {
 	if (_model)
 		_model->end_write(false); // FIXME: param?
+
+	_writing = false;
 }
 

libs/ardour/smf_source.cc

@@ -796,6 +796,9 @@ SMFSource::read_var_len() const
 void
 SMFSource::load_model(bool lock, bool force_reload)
 {
+	if (_writing)
+		return;
+
 	if (lock)
 		Glib::Mutex::Lock lm (_lock);