From 2cef260f92785971d7d61489c2278ad7afae0dd7 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Wed, 21 Feb 2007 02:30:09 +0000
Subject: Tempo based time in Machina (and related utilities added to Raul).
git-svn-id: http://svn.drobilla.net/lad/raul@324 a436a847-0d15-0410-975c-d299462d15a1
---
src/TimeSlice.cpp | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 src/TimeSlice.cpp
(limited to 'src/TimeSlice.cpp')
diff --git a/src/TimeSlice.cpp b/src/TimeSlice.cpp
new file mode 100644
index 0000000..d6b7fc6
--- /dev/null
+++ b/src/TimeSlice.cpp
@@ -0,0 +1,54 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ *
+ * Raul is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * Raul is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <raul/TimeSlice.h>
+
+namespace Raul {
+
+
+TimeSlice::TimeSlice(double tick_rate, double bpm)
+ : _tick_rate(tick_rate)
+ , _beat_rate(60.0/bpm)
+ , _start_ticks(0)
+ , _offset(0)
+ , _length(0)
+ , _start_beats(0)
+{}
+
+
+/** Update beat time to match real (tick) time.
+ */
+void
+TimeSlice::update_beat_time()
+{
+ _start_beats = (start_ticks() * _tick_rate) / _beat_rate;
+}
+
+
+TickTime
+TimeSlice::beats_to_ticks(BeatTime beats)
+{
+ return static_cast<TickTime>(beats_to_seconds(beats) / _tick_rate);
+}
+
+Seconds
+TimeSlice::beats_to_seconds(BeatTime beats)
+{
+ return (beats * _beat_rate);
+}
+
+} // namespace Raul
--
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