Save MIDI files to interchange/sessionname/midifiles (instead of audiofiles).

Fix some uninitialized variables in Streamview.
Tempo-based SMF source (internally only).
Horrible crash on MIDI record finish.


git-svn-id: svn://localhost/ardour2/trunk@1955 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/midi_region_view.cc

@@ -87,13 +87,14 @@ MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 
 	set_colors ();
 
-	boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion> (_region);
-	mr->midi_source(0)->load_model();
+	if (wfd) {
+		midi_region()->midi_source(0)->load_model();
 
-	begin_write();
-	for (size_t i=0; i < mr->midi_source(0)->model().n_events(); ++i)
-		add_event(mr->midi_source(0)->model().event_at(i));
-	end_write();
+		begin_write();
+		for (size_t i=0; i < midi_region()->midi_source(0)->model().n_events(); ++i)
+			add_event(midi_region()->midi_source(0)->model().event_at(i));
+		end_write();
+	}
 }
 
 MidiRegionView::~MidiRegionView ()

gtk2_ardour/streamview.cc

@@ -57,6 +57,8 @@ StreamView::StreamView (RouteTimeAxisView& tv)
 	, region_color(_trackview.color())
 	, stream_base_color(0xFFFFFFFF)
 	, layers(1)
+	, height(tv.height)
+	, layer_display(Overlaid)
 	, last_rec_data_frame(0)
 {
 	/* set_position() will position the group */

gtk2_ardour/time_axis_view.cc

@@ -71,6 +71,8 @@ bool TimeAxisView::need_size_info = true;
 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas) 
 	: AxisView (sess), 
 	  editor (ed),
+	  y_position(0),
+	  order(0),
 	  controls_table (2, 8)
 {
 	if (need_size_info) {

libs/ardour/ardour/directory_names.h

@@ -8,6 +8,7 @@ namespace ARDOUR {
 
 extern const char* const old_sound_dir_name;
 extern const char* const sound_dir_name;
+extern const char* const midi_dir_name;
 extern const char* const dead_sound_dir_name;
 extern const char* const interchange_dir_name;
 extern const char* const peak_dir_name;

libs/ardour/ardour/session.h

@@ -256,6 +256,7 @@ class Session : public PBD::StatefulDestructible
 	sigc::signal<void> DirtyChanged;
 
 	std::string sound_dir (bool with_path = true) const;
+	std::string midi_dir (bool with_path = true) const;
 	std::string peak_dir () const;
 	std::string dead_sound_dir () const;
 	std::string automation_dir () const;

libs/ardour/ardour/session_directory.h

@@ -53,6 +53,13 @@ public:
 	 * of root_path()/interchange/session_name/audiofiles
 	 */
 	const path sound_path () const;
+	
+	/**
+	 * @return the absolute path to the directory in which 
+	 * the session stores MIDI files, ie
+	 * root_path()/interchange/session_name/midifiles
+	 */
+	const path midi_path () const;
 
 	/**
 	 * @return The absolute path to the directory in which all

libs/ardour/ardour/smf_source.h

@@ -91,6 +91,8 @@ class SMFSource : public MidiSource {
 	void load_model(bool lock=true);
 	void destroy_model();
 
+	uint16_t ppqn() const { return _ppqn; }
+
   private:
 
 	int init (string idstr, bool must_exist);
@@ -110,6 +112,8 @@ class SMFSource : public MidiSource {
 	uint32_t read_var_len() const;
 	int      read_event(MidiEvent& ev) const;
 
+	static const uint16_t _ppqn = 19200;
+
 	uint16_t       _channel;
 	string         _path;
 	Flag           _flags;

libs/ardour/ardour/tempo.h

@@ -195,7 +195,7 @@ class TempoMap : public PBD::StatefulDestructible
 
 	BBTPointList *get_points (nframes_t start, nframes_t end) const;
 
-	void           bbt_time (nframes_t when, BBT_Time&) const;
+	void      bbt_time (nframes_t when, BBT_Time&) const;
 	nframes_t frame_time (const BBT_Time&) const;
 	nframes_t bbt_duration_at (nframes_t, const BBT_Time&, int dir) const;
 

libs/ardour/directory_names.cc

@@ -6,6 +6,7 @@ namespace ARDOUR {
 
 const char* const old_sound_dir_name = X_("sounds");
 const char* const sound_dir_name = X_("audiofiles");
+const char* const midi_dir_name = X_("audiofiles");
 const char* const peak_dir_name = X_("peaks");
 const char* const dead_sound_dir_name = X_("dead_sounds");
 const char* const interchange_dir_name = X_("interchange");

libs/ardour/session_directory.cc

@@ -105,6 +105,19 @@ SessionDirectory::sound_path () const
 	return l_sound_path;
 }
 
+const path
+SessionDirectory::midi_path () const
+{
+	// the new style sound directory
+	path l_midi_path(m_root_path);
+
+	l_midi_path /= interchange_dir_name;
+	l_midi_path /= basename(m_root_path);
+	l_midi_path /= midi_dir_name;
+
+	return l_midi_path;
+}
+
 const path
 SessionDirectory::peak_path () const
 {

libs/ardour/session_state.cc

@@ -2036,6 +2036,33 @@ Session::sound_dir (bool with_path) const
 	return res;
 }
 
+string
+Session::midi_dir (bool with_path) const
+{
+	string res;
+	string full;
+
+	if (with_path) {
+		res = _path;
+	} else {
+		full = _path;
+	}
+
+	res += interchange_dir_name;
+	res += '/';
+	res += legalize_for_path (_name);
+	res += '/';
+	res += midi_dir_name;
+
+	if (with_path) {
+		full = res;
+	} else {
+		full += res;
+	}
+	
+	return res;
+}
+
 string
 Session::peak_dir () const
 {

libs/ardour/smf_source.cc

@@ -36,6 +36,8 @@
 #include <ardour/session.h>
 #include <ardour/midi_ring_buffer.h>
 #include <ardour/midi_util.h>
+#include <ardour/tempo.h>
+#include <ardour/audioengine.h>
 
 #include "i18n.h"
 
@@ -178,9 +180,9 @@ SMFSource::flush_header ()
 
 	assert(_fd);
 
-	const uint16_t type     = GUINT16_TO_BE(0);    // SMF Type 0 (single track)
-	const uint16_t ntracks  = GUINT16_TO_BE(1);    // Number of tracks (always 1 for Type 0)
-	const uint16_t division = GUINT16_TO_BE(1920); // FIXME FIXME FIXME PPQN
+	const uint16_t type     = GUINT16_TO_BE(0);     // SMF Type 0 (single track)
+	const uint16_t ntracks  = GUINT16_TO_BE(1);     // Number of tracks (always 1 for Type 0)
+	const uint16_t division = GUINT16_TO_BE(_ppqn); // Pulses per beat
 
 	char data[6];
 	memcpy(data, &type, 2);
@@ -241,8 +243,8 @@ SMFSource::find_first_event_after(nframes_t start)
  *
  * File position MUST be at the beginning of a delta time, or this will die very messily.
  * ev.buffer must be of size ev.size, and large enough for the event.  The returned event
- * will have it's time field set to it's delta time (so it's the caller's responsibility
- * to calculate a real time for the event).
+ * will have it's time field set to it's delta time, in SMF tempo-based ticks, using the
+ * rate given by ppqn() (it is the caller's responsibility to calculate a real time).
  *
  * Returns event length (including status byte) on success, 0 if event was
  * skipped (eg a meta event), or -1 on EOF (or end of track).
@@ -287,12 +289,14 @@ SMFSource::read_event(MidiEvent& ev) const
 	return ev.size;
 }
 
+/** All stamps in audio frames */
 nframes_t
 SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset) const
 {
 	//cerr << "SMF - read " << start << ", count=" << cnt << ", offset=" << stamp_offset << endl;
 
-	nframes_t time = 0;
+	// 64 bits ought to be enough for anybody
+	uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
 
 	_read_data_count = 0;
 
@@ -307,6 +311,12 @@ SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, n
 	
 	fseek(_fd, _header_size, 0);
 	
+	// FIXME: assumes tempo never changes after start
+	const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
+			_session.engine().frame_rate());
+	
+	uint64_t start_ticks = (uint64_t)((start / frames_per_beat) * _ppqn);
+
 	while (!feof(_fd)) {
 		int ret = read_event(ev);
 		if (ret == -1) { // EOF
@@ -323,11 +333,12 @@ SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, n
 		time += ev.time; // accumulate delta time
 		ev.time = time; // set ev.time to actual time (relative to source start)
 
-		if (ev.time >= start) {
-			if (ev.time > start + cnt) {
+		if (ev.time >= start_ticks) {
+			if (ev.time < start_ticks + (cnt / frames_per_beat)) {
 				break;
 			} else {
-				ev.time += stamp_offset;
+				ev.time = (nframes_t)(((ev.time / (double)_ppqn) * frames_per_beat)) + stamp_offset;
+				// write event time in absolute frames
 				dst.write(ev.time, ev.size, ev.buffer);
 			}
 		}
@@ -338,6 +349,7 @@ SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, n
 	return cnt;
 }
 
+/** All stamps in audio frames */
 nframes_t
 SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
 {
@@ -349,13 +361,16 @@ SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
 
 	fseek(_fd, 0, SEEK_END);
 
-	// FIXME: start of source time?
+	// FIXME: assumes tempo never changes after start
+	const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
+			_session.engine().frame_rate());
 	
 	for (size_t i=0; i < buf.size(); ++i) {
 		MidiEvent& ev = buf[i];
 		assert(ev.time >= _timeline_position);
 		ev.time -= _timeline_position;
-		uint32_t delta_time = ev.time - _last_ev_time;
+		assert(ev.time >= _last_ev_time);
+		const uint32_t delta_time = (uint32_t)(ev.time - _last_ev_time) / frames_per_beat * _ppqn;
 		
 		/*printf("SMF - writing event, delta = %u, size = %zu, data = ",
 			delta_time, ev.size);
@@ -366,10 +381,11 @@ SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
 		*/
 		size_t stamp_size = write_var_len(delta_time);
 		fwrite(ev.buffer, 1, ev.size, _fd);
-		_last_ev_time += delta_time;
-		_track_size += stamp_size + ev.size;
 
+		_track_size += stamp_size + ev.size;
 		_write_data_count += ev.size;
+		
+		_last_ev_time = ev.time;
 	}
 
 	fflush(_fd);
@@ -765,7 +781,7 @@ SMFSource::load_model(bool lock)
 	
 	fseek(_fd, _header_size, 0);
 
-	nframes_t time = 0;
+	double    time = 0;
 	MidiEvent ev;
 	
 	int ret;