1 files changed, 53 insertions, 0 deletions
diff --git a/tools/zalsa/timers.h b/tools/zalsa/timers.h
new file mode 100644
index 00000000..267afa61
--- /dev/null
+++ b/tools/zalsa/timers.h
@@ -0,0 +1,53 @@
+// ----------------------------------------------------------------------------
+//
+//  Copyright (C) 2012-2018 Fons Adriaensen <fons@linuxaudio.org>
+//    
+//  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 3 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, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+
+
+#ifndef __TIMERS_H
+#define __TIMERS_H
+
+
+#include <math.h>
+#include <sys/time.h>
+#include <jack/jack.h>
+
+
+#define tjack_mod ldexp (1e-6f, 32)
+
+
+
+inline double tjack_diff (double a, double b)    
+{
+    double d, m;
+
+    d = a - b;
+    m = tjack_mod;
+    while (d < -m / 2) d += m;
+    while (d >= m / 2) d -= m;
+    return d;
+}
+
+
+inline double tjack (jack_time_t t, double dt = 0)
+{
+    int32_t u = (int32_t)(t & 0xFFFFFFFFLL);
+    return 1e-6 * u;
+}
+
+
+#endif