From 7e598788b002dcb4343ccdc6fcc16181bd8515c8 Mon Sep 17 00:00:00 2001
From: petern <petern@ba049829-c6ef-42ef-81ac-908dd8d2e907>
Date: Wed, 22 Jul 2009 19:11:57 +0000
Subject: [PATCH] -Change: Store loop-relative timestamp in midi event queue
 instead of period and period-relative timestamps.

git-svn-id: http://svn.fuzzle.org/mloop/trunk@21 ba049829-c6ef-42ef-81ac-908dd8d2e907
---
 src/jack.cpp |  8 +++-----
 src/loop.cpp | 21 ++++++++-------------
 src/loop.h   |  5 ++---
 3 files changed, 13 insertions(+), 21 deletions(-)

diff --git a/src/jack.cpp b/src/jack.cpp
index 6137185..301150e 100644
--- a/src/jack.cpp
+++ b/src/jack.cpp
@@ -103,7 +103,7 @@ int Jack::ProcessCallback(jack_nframes_t nframes)
 				 * or empty.
 				 */
 				if (m_loop_buffer->Free() > sizeof ev.time + sizeof ev.size + ev.size) {
-					m_loop_buffer->Write((uint8_t *)&m_recording_time, sizeof m_recording_time);
+					ev.time += m_recording_time;
 					m_loop_buffer->Write((uint8_t *)&ev.time, sizeof ev.time);
 					m_loop_buffer->Write((uint8_t *)&ev.size, sizeof ev.size);
 					m_loop_buffer->Write((uint8_t *)ev.buffer, ev.size);
@@ -174,7 +174,6 @@ void Jack::EraseLoop(int loop)
 
 bool Jack::Run()
 {
-	static jack_nframes_t recording_time;
 	static jack_midi_event_t ev;
 	static bool first = true;
 	if (first) {
@@ -183,8 +182,7 @@ bool Jack::Run()
 	}
 
 	if (ev.time == UINT_MAX) {
-		if (m_loop_buffer->Size() >= sizeof recording_time + sizeof ev.time + sizeof ev.size) {
-			m_loop_buffer->Read((uint8_t *)&recording_time, sizeof recording_time);
+		if (m_loop_buffer->Size() >= sizeof ev.time + sizeof ev.size) {
 			m_loop_buffer->Read((uint8_t *)&ev.time, sizeof ev.time);
 			m_loop_buffer->Read((uint8_t *)&ev.size, sizeof ev.size);
 		}
@@ -195,7 +193,7 @@ bool Jack::Run()
 		}
 
 		if (m_recording) {
-			m_loops[m_recording_loop].AddEvent(recording_time, &ev);
+			m_loops[m_recording_loop].AddEvent(&ev);
 		}
 		ev.time = UINT_MAX;
 	}
diff --git a/src/loop.cpp b/src/loop.cpp
index 77713ab..989745f 100644
--- a/src/loop.cpp
+++ b/src/loop.cpp
@@ -33,10 +33,8 @@ void Loop::PlayFrame(void *port_buffer, jack_nframes_t frame)
 	}
 
 	for (; m_iterator != m_events.end(); ++m_iterator) {
-
-		jack_midi_event_t &event = (*m_iterator).first;
-		jack_nframes_t position = (*m_iterator).second;
-		if (event.time + position > m_position) break;
+		jack_midi_event_t &event = *m_iterator;
+		if (event.time > m_position) break;
 
 		jack_midi_event_write(port_buffer, frame, event.buffer, event.size);
 	}
@@ -52,12 +50,9 @@ void Loop::PlayFrame(void *port_buffer, jack_nframes_t frame)
 	}
 }
 
-void Loop::AddEvent(jack_nframes_t position, jack_midi_event_t *event)
+void Loop::AddEvent(jack_midi_event_t *event)
 {
-	Event e;
-	e.first = *event;
-	e.second = position;
-	m_events.push_back(e);
+	m_events.push_back(*event);
 }
 
 void Loop::SetLength(jack_nframes_t length)
@@ -109,7 +104,7 @@ void Loop::StartFromNoteCache(NoteCache &cache)
 				event.buffer = buffer;
 				event.size = 3;
 
-				AddEvent(0, &event);
+				AddEvent(&event);
 			}
 		}
 	}
@@ -128,11 +123,11 @@ void Loop::EndFromNoteCache(NoteCache &cache)
 				buffer[2] = 0;
 
 				jack_midi_event_t event;
-				event.time = 0;
+				event.time = m_length - 1;
 				event.buffer = buffer;
 				event.size = 3;
 
-				AddEvent(m_length - 1, &event);
+				AddEvent(&event);
 			}
 		}
 	}
@@ -146,7 +141,7 @@ void Loop::Empty()
 	m_position = 0;
 
 	for (m_iterator = m_events.begin(); m_iterator != m_events.end(); ++m_iterator) {
-		jack_midi_event_t &event = (*m_iterator).first;
+		jack_midi_event_t &event = *m_iterator;
 		free(event.buffer);
 	}
 
diff --git a/src/loop.h b/src/loop.h
index 5ce84f8..9d8ddf7 100644
--- a/src/loop.h
+++ b/src/loop.h
@@ -17,8 +17,7 @@ enum LoopState {
 	LS_RECORDING,
 };
 
-typedef std::pair<jack_midi_event_t, jack_nframes_t> Event;
-typedef std::list<Event> EventList;
+typedef std::list<jack_midi_event_t> EventList;
 
 class Loop {
 private:
@@ -36,7 +35,7 @@ public:
 	~Loop();
 
 	void PlayFrame(void *port_buffer, jack_nframes_t frame);
-	void AddEvent(jack_nframes_t position, jack_midi_event_t *event);
+	void AddEvent(jack_midi_event_t *event);
 
 	void SetState(LoopState state)
 	{