/* * * 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)