Improve GUI display during MIDI record in various ways.

git-svn-id: svn://localhost/ardour2/branches/3.0@7875 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/midi_streamview.cc

@@ -459,7 +459,6 @@ MidiStreamView::setup_rec_box ()
 								      (RegionFactory::create (sources, plist, false)));
 
 				assert(region);
-				region->suspend_property_changes ();
 				region->set_position (_trackview.session()->transport_frame(), this);
 				rec_regions.push_back (make_pair(region, (RegionView*)0));
 
@@ -553,8 +552,9 @@ MidiStreamView::setup_rec_box ()
 	}
 }
 
+/** @param start Start position to update in session frames */
 void
-MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t start, nframes_t dur)
+MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, framepos_t const start, nframes_t dur)
 {
 	ENSURE_GUI_THREAD (*this, &MidiStreamView::update_rec_regions, data, start, dur)
 
@@ -602,13 +602,8 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
 							((MidiRegionView*)iter->second)->begin_write();
 						}
 
-						/* also update rect */
-						ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
-						gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
-						rect->property_x2() = xend;
-
-						ARDOUR::BeatsFramesConverter tconv(_trackview.session()->tempo_map(), region->position());
-						const MidiModel::TimeType start_beats = tconv.from(start);
+						ARDOUR::BeatsFramesConverter tconv(_trackview.session()->tempo_map(), region->position() - region->start());
+						const MidiModel::TimeType start_beats = tconv.from (start - tconv.origin_b ());
 
 						/* draw events */
 						MidiRegionView* mrv = (MidiRegionView*)iter->second;
@@ -693,8 +688,11 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
 	}
 }
 
+/** @param start Start of the range in session frames.
+ *  @param cnd Number of frames in the range.
+ */
 void
-MidiStreamView::rec_data_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
+MidiStreamView::rec_data_range_ready (framepos_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 {
 	// this is called from the butler thread for now
 

gtk2_ardour/midi_streamview.h

@@ -102,19 +102,19 @@ class MidiStreamView : public StreamView
 	void setup_rec_box ();
 
 	void rec_data_range_ready (
-			nframes_t start,
-			nframes_t dur,
-			boost::weak_ptr<ARDOUR::Source> src);
-
+		ARDOUR::framepos_t start,
+		nframes_t dur,
+		boost::weak_ptr<ARDOUR::Source> src);
+	
 	void update_rec_regions (
-			boost::shared_ptr<ARDOUR::MidiModel> data,
-			nframes_t start,
-			nframes_t dur);
-
+		boost::shared_ptr<ARDOUR::MidiModel> data,
+		ARDOUR::framepos_t const start,
+		nframes_t dur);
+	
 	RegionView* add_region_view_internal (
-			boost::shared_ptr<ARDOUR::Region>,
-			bool wait_for_waves,
-			bool recording = false);
+		boost::shared_ptr<ARDOUR::Region>,
+		bool wait_for_waves,
+		bool recording = false);
 
 	void display_region(MidiRegionView* region_view, bool load_model);
 	void display_track (boost::shared_ptr<ARDOUR::Track> tr);

libs/ardour/ardour/midi_source.h

@@ -91,7 +91,10 @@ class MidiSource : virtual public Source
 
 	static PBD::Signal1<void,MidiSource*> MidiSourceCreated;
 
-	// Signal a range of recorded data is available for reading from model()
+	/** Emitted when a range of recorded data is available for reading from model().
+	 *  First parameter is the start of the range in session frames.
+	 *  Second parameter is the number of frames.
+	 */
 	mutable PBD::Signal2<void,framepos_t,nframes_t> ViewDataRangeReady;
 
 	XMLNode& get_state ();

libs/ardour/midi_diskstream.cc

@@ -1143,7 +1143,7 @@ MidiDiskstream::set_record_enabled (bool yn)
 void
 MidiDiskstream::engage_record_enable ()
 {
-    bool rolling = _session.transport_speed() != 0.0f;
+	bool const rolling = _session.transport_speed() != 0.0f;
 
 	g_atomic_int_set (&_record_enabled, 1);
 

libs/ardour/midi_source.cc

@@ -251,6 +251,10 @@ MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, framepos_t source_star
 	}
 }
 
+/** Write data from a MidiRingBuffer to this source.
+ *  @param source Source to read from.
+ *  @param source_start This source's start position in session frames.
+ */
 nframes_t
 MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, framepos_t source_start, nframes_t duration)
 {
@@ -311,7 +315,7 @@ MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
         boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
                 SourceFactory::createWritable(DataType::MIDI, _session,
                                               newpath, false, _session.frame_rate()));
-        
+
         newsrc->set_timeline_position(_timeline_position);
 	newsrc->copy_interpolation_from (this);
 	newsrc->copy_automation_state_from (this);

libs/ardour/smf_source.cc

@@ -201,7 +201,10 @@ SMFSource::read_unlocked (Evoral::EventSink<nframes_t>& destination, framepos_t
 	return duration;
 }
 
-/** All stamps in audio frames */
+/** Write data to this source from a MidiRingBuffer.
+ *  @param source Buffer to read from.
+ *  @param position This source's start position in session frames.
+ */
 nframes_t
 SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, framepos_t position, nframes_t duration)
 {
@@ -243,6 +246,7 @@ SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, framepos_t positio
 			break;
 		}
 
+		/* convert from session time to time relative to the source start */
 		assert(time >= position);
 		time -= position;
 
@@ -262,7 +266,7 @@ SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, framepos_t positio
 	Evoral::SMF::flush();
 	free(buf);
 
-	ViewDataRangeReady(position + _last_write_end, duration); /* EMIT SIGNAL */
+	ViewDataRangeReady (_last_write_end, duration); /* EMIT SIGNAL */
 
 	return duration;
 }