From 4d5822a332e685672afd54e513ac826762763a63 Mon Sep 17 00:00:00 2001
From: petern <petern@ba049829-c6ef-42ef-81ac-908dd8d2e907>
Date: Tue, 21 Jul 2009 21:52:18 +0000
Subject: [PATCH] -Add ability to erase loops.

git-svn-id: http://svn.fuzzle.org/mloop/mloop/trunk@5 ba049829-c6ef-42ef-81ac-908dd8d2e907
---
 src/jack.cpp |  5 +++++
 src/loop.cpp | 17 +++++++++++++----
 src/loop.h   |  1 +
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/jack.cpp b/src/jack.cpp
index 8098e8b..c8f3433 100644
--- a/src/jack.cpp
+++ b/src/jack.cpp
@@ -249,6 +249,11 @@ void Jack::Run()
 					printf("Stopping loop %d\n", m_recording_loop);
 					m_loops[m_recording_loop].Stop();
 					break;
+
+				case 'e':
+					printf("Erasing loop %d\n", m_recording_loop);
+					m_loops[m_recording_loop].Empty();
+					break;
 			}
 		}
 	}
diff --git a/src/loop.cpp b/src/loop.cpp
index 91c3e6e..0defd43 100644
--- a/src/loop.cpp
+++ b/src/loop.cpp
@@ -63,6 +63,8 @@ void Loop::Start(bool loop)
 {
 	if (m_state != LS_IDLE) return;
 
+	if (m_length == 0) return;
+
 	m_position = 0;
 	m_iterator = m_events.begin();
 	m_state = loop ? LS_PLAY_LOOP : LS_PLAY_ONCE;
@@ -121,10 +123,17 @@ void Loop::EndFromNoteCache(NoteCache &cache)
 	}
 }
 
-/*
-void Loop::Reset()
+void Loop::Empty()
 {
-	m_state = LS_IDLE;
+	if (m_state != LS_IDLE) return;
+
+	m_length = 0;
 	m_position = 0;
+
+	for (m_iterator = m_events.begin(); m_iterator != m_events.end(); ++m_iterator) {
+		jack_midi_event_t &event = (*m_iterator).first;
+		free(event.buffer);
+	}
+
+	m_events.clear();
 }
-*/
diff --git a/src/loop.h b/src/loop.h
index 55607d0..18efac8 100644
--- a/src/loop.h
+++ b/src/loop.h
@@ -35,6 +35,7 @@ public:
 	void SetLength(jack_nframes_t length);
 	void Start(bool loop);
 	void Stop();
+	void Empty();
 
 	void StartFromNoteCache(NoteCache &cache);
 	void EndFromNoteCache(NoteCache &cache);