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/*
*
* 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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