src/replay_gain_config.c

   1 /*
   2  * Copyright (C) 2003-2010 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 #include "config.h"
  21 #include "replay_gain_config.h"
  22 #include "conf.h"
  23 #include "idle.h"
  24
  25 #include <glib.h>
  26
  27 #include <assert.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <math.h>
  31
  32 static const char *const replay_gain_mode_names[] = {
  33         [REPLAY_GAIN_ALBUM] = "album",
  34         [REPLAY_GAIN_TRACK] = "track",
  35 };
  36
  37 enum replay_gain_mode replay_gain_mode = REPLAY_GAIN_OFF;
  38
  39 float replay_gain_preamp = 1.0;
  40 float replay_gain_missing_preamp = 1.0;
  41
  42 const char *
  43 replay_gain_get_mode_string(void)
  44 {
  45         switch (replay_gain_mode) {
  46         case REPLAY_GAIN_AUTO:
  47                 return "auto";
  48
  49         case REPLAY_GAIN_OFF:
  50                 return "off";
  51
  52         case REPLAY_GAIN_TRACK:
  53                 return "track";
  54
  55         case REPLAY_GAIN_ALBUM:
  56                 return "album";
  57         }
  58
  59         /* unreachable */
  60         assert(false);
  61         return "off";
  62 }
  63
  64 bool
  65 replay_gain_set_mode_string(const char *p)
  66 {
  67         assert(p != NULL);
  68
  69         if (strcmp(p, "off") == 0)
  70                 replay_gain_mode = REPLAY_GAIN_OFF;
  71         else if (strcmp(p, "track") == 0)
  72                 replay_gain_mode = REPLAY_GAIN_TRACK;
  73         else if (strcmp(p, "album") == 0)
  74                 replay_gain_mode = REPLAY_GAIN_ALBUM;
  75         else if (strcmp(p, "auto") == 0)
  76                 replay_gain_mode = REPLAY_GAIN_AUTO;
  77         else
  78                 return false;
  79
  80         idle_add(IDLE_OPTIONS);
  81
  82         return true;
  83 }
  84
  85 void replay_gain_global_init(void)
  86 {
  87         const struct config_param *param = config_get_param(CONF_REPLAYGAIN);
  88
  89         if (param != NULL && !replay_gain_set_mode_string(param->value)) {
  90                 g_error("replaygain value \"%s\" at line %i is invalid\n",
  91                         param->value, param->line);
  92         }
  93
  94         param = config_get_param(CONF_REPLAYGAIN_PREAMP);
  95
  96         if (param) {
  97                 char *test;
  98                 float f = strtod(param->value, &test);
  99
 100                 if (*test != '\0') {
 101                         g_error("Replaygain preamp \"%s\" is not a number at "
 102                                 "line %i\n", param->value, param->line);
 103                 }
 104
 105                 if (f < -15 || f > 15) {
 106                         g_error("Replaygain preamp \"%s\" is not between -15 and"
 107                                 "15 at line %i\n", param->value, param->line);
 108                 }
 109
 110                 replay_gain_preamp = pow(10, f / 20.0);
 111         }
 112
 113         param = config_get_param(CONF_REPLAYGAIN_MISSING_PREAMP);
 114
 115         if (param) {
 116                 char *test;
 117                 float f = strtod(param->value, &test);
 118
 119                 if (*test != '\0') {
 120                         g_error("Replaygain missing preamp \"%s\" is not a number at "
 121                                 "line %i\n", param->value, param->line);
 122                 }
 123
 124                 if (f < -15 || f > 15) {
 125                         g_error("Replaygain missing preamp \"%s\" is not between -15 and"
 126                                 "15 at line %i\n", param->value, param->line);
 127                 }
 128
 129                 replay_gain_missing_preamp = pow(10, f / 20.0);
 130         }
 131 }