From 1058def8e7827e56ce4a70afb4aeacb5dc44148f Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Fri, 3 May 2013 21:08:42 +0400
Subject: Imported Upstream version 4.2-build2006

---
 tutorials/sndkit/sblive/vu.mac | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 tutorials/sndkit/sblive/vu.mac

(limited to 'tutorials/sndkit/sblive/vu.mac')

diff --git a/tutorials/sndkit/sblive/vu.mac b/tutorials/sndkit/sblive/vu.mac
new file mode 100644
index 0000000..c563d98
--- /dev/null
+++ b/tutorials/sndkit/sblive/vu.mac
@@ -0,0 +1,27 @@
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+// VU meter computation macros
+//
+// Simple VU
+#define VU(vuvar, input) \
+  TSTNEG(VUTMP, input, input, 0);\
+  LIMIT(vuvar, vuvar, vuvar, VUTMP)
+/* VU meter with volume scaling */
+#define VUSCALE(vuvar, input, scale) \
+  MACS(VUTMP2, 0, input, scale) ;\
+  TSTNEG(VUTMP, VUTMP2, VUTMP2, 0);\
+  LIMIT(vuvar, vuvar, vuvar, VUTMP)
+/* VU meter with volume scaling and summing with a 'base' signal */
+#define VUSCALESUM(vuvar, basevar, input, scale) \
+  MACS(VUTMP2, basevar, input, scale) ;\
+  TSTNEG(VUTMP, VUTMP2, VUTMP2, 0);\
+  LIMIT(vuvar, vuvar, vuvar, VUTMP)
-- 
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