/* the Music Player Daemon (MPD) * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) * This project's homepage is: http://www.musicpd.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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "compress.h" #include "conf.h" #include "normalize.h" #include <stdlib.h> #define DEFAULT_VOLUME_NORMALIZATION 0 int normalizationEnabled; void initNormalization(void) { normalizationEnabled = getBoolConfigParam(CONF_VOLUME_NORMALIZATION); if (normalizationEnabled == -1) normalizationEnabled = DEFAULT_VOLUME_NORMALIZATION; else if (normalizationEnabled < 0) exit(EXIT_FAILURE); if (normalizationEnabled) CompressCfg(0, ANTICLIP, TARGET, GAINMAX, GAINSMOOTH, BUCKETS); } void finishNormalization(void) { if (normalizationEnabled) CompressFree(); } void normalizeData(char *buffer, int bufferSize, AudioFormat *format) { if ((format->bits != 16) || (format->channels != 2)) return; CompressDo(buffer, bufferSize); }