new header file for superclock stuff

diff --git a/libs/ardour/ardour/superclock.h b/libs/ardour/ardour/superclock.h
new file mode 100644 (file)
index 0000000..469537d
--- /dev/null
+++ b/libs/ardour/ardour/superclock.h
@@ -0,0 +1,36 @@
+/*
+    Copyright (C) 2017 Paul Davis
+
+    This program 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.
+
+    This program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_superclock_h__
+#define __ardour_superclock_h__
+
+#include <stdint.h>
+
+namespace ARDOUR {
+
+typedef uint64_t superclock_t;
+
+static const superclock_t superclock_ticks_per_second = 508032000; // 2^10 * 3^4 * 5^3 * 7^2
+
+static inline superclock_t superclock_to_samples (superclock_t s, int sr) { return (s * sr) / superclock_ticks_per_second; }
+static inline superclock_t samples_to_superclock (int samples, int sr) { return (samples * superclock_ticks_per_second) / sr; }
+
+}
+
+#endif /* __ardour_superclock_h__ */