src/replayGain.h

   1 /* the Music Player Daemon (MPD)
   2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
   3  * (c)2004 replayGain code by AliasMrJones
   4  * This project's homepage is: http://www.musicpd.org
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #ifndef REPLAYGAIN_H
  21 #define REPLAYGAIN_H
  22
  23 #include "audio.h"
  24
  25 #define REPLAYGAIN_OFF          0
  26 #define REPLAYGAIN_TRACK        1
  27 #define REPLAYGAIN_ALBUM        2
  28
  29 extern int replayGainState;
  30
  31 typedef struct _ReplayGainInfo {
  32         float albumGain;
  33         float albumPeak;
  34         float trackGain;
  35         float trackPeak;
  36
  37         /* used internally by mpd, to mess with it */
  38         float scale;
  39 } ReplayGainInfo;
  40
  41 ReplayGainInfo *newReplayGainInfo(void);
  42
  43 void freeReplayGainInfo(ReplayGainInfo * info);
  44
  45 void initReplayGainState(void);
  46
  47 void doReplayGain(ReplayGainInfo * info, char *buffer, int bufferSize,
  48                   AudioFormat * format);
  49
  50 #endif