src/compress.h

   1 /*
   2  * Copyright (C) 2003-2009 The Music Player Daemon Project
   3  * http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 /*
  21  * Imported from AudioCompress by J. Shagam <fluffy@beesbuzz.biz>
  22  */
  23
  24 #ifndef MPD_COMPRESS_H
  25 #define MPD_COMPRESS_H
  26
  27 /* These are copied from the AudioCompress config.h, mainly because CompressDo
  28  * needs GAINSHIFT defined.  The rest are here so they can be used as defaults
  29  * to pass to CompressCfg(). -- jat */
  30 #define ANTICLIP 0              /* Strict clipping protection */
  31 #define TARGET 25000            /* Target level */
  32 #define GAINMAX 32              /* The maximum amount to amplify by */
  33 #define GAINSHIFT 10            /* How fine-grained the gain is */
  34 #define GAINSMOOTH 8            /* How much inertia ramping has*/
  35 #define BUCKETS 400             /* How long of a history to store */
  36
  37 void CompressCfg(int monitor,
  38                  int anticlip,
  39                  int target,
  40                  int maxgain,
  41                  int smooth,
  42                  unsigned buckets);
  43
  44 void CompressDo(void *data, unsigned int numSamples);
  45
  46 void CompressFree(void);
  47
  48 #endif