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/*
* Copyright (C) 2003-2010 The Music Player Daemon Project
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* (c)2004 replayGain code by AliasMrJones
*/
#include "config.h"
#include "replay_gain.h"
#include "conf.h"
#include "idle.h"
#include <glib.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
static const char *const replay_gain_mode_names[] = {
[REPLAY_GAIN_ALBUM] = "album",
[REPLAY_GAIN_TRACK] = "track",
};
enum replay_gain_mode replay_gain_mode = REPLAY_GAIN_OFF;
float replay_gain_preamp = 1.0;
float replay_gain_missing_preamp = 1.0;
const char *
replay_gain_get_mode_string(void)
{
switch (replay_gain_mode) {
case REPLAY_GAIN_OFF:
return "off";
case REPLAY_GAIN_TRACK:
return "track";
case REPLAY_GAIN_ALBUM:
return "album";
}
/* unreachable */
assert(false);
return "off";
}
bool
replay_gain_set_mode_string(const char *p)
{
assert(p != NULL);
if (strcmp(p, "off") == 0)
replay_gain_mode = REPLAY_GAIN_OFF;
else if (strcmp(p, "track") == 0)
replay_gain_mode = REPLAY_GAIN_TRACK;
else if (strcmp(p, "album") == 0)
replay_gain_mode = REPLAY_GAIN_ALBUM;
else
return false;
idle_add(IDLE_OPTIONS);
return true;
}
void replay_gain_global_init(void)
{
const struct config_param *param = config_get_param(CONF_REPLAYGAIN);
if (param != NULL && !replay_gain_set_mode_string(param->value)) {
g_error("replaygain value \"%s\" at line %i is invalid\n",
param->value, param->line);
}
param = config_get_param(CONF_REPLAYGAIN_PREAMP);
if (param) {
char *test;
float f = strtod(param->value, &test);
if (*test != '\0') {
g_error("Replaygain preamp \"%s\" is not a number at "
"line %i\n", param->value, param->line);
}
if (f < -15 || f > 15) {
g_error("Replaygain preamp \"%s\" is not between -15 and"
"15 at line %i\n", param->value, param->line);
}
replay_gain_preamp = pow(10, f / 20.0);
}
param = config_get_param(CONF_REPLAYGAIN_MISSING_PREAMP);
if (param) {
char *test;
float f = strtod(param->value, &test);
if (*test != '\0') {
g_error("Replaygain missing preamp \"%s\" is not a number at "
"line %i\n", param->value, param->line);
}
if (f < -15 || f > 15) {
g_error("Replaygain missing preamp \"%s\" is not between -15 and"
"15 at line %i\n", param->value, param->line);
}
replay_gain_missing_preamp = pow(10, f / 20.0);
}
}
struct replay_gain_info *replay_gain_info_new(void)
{
struct replay_gain_info *ret = g_new(struct replay_gain_info, 1);
for (unsigned i = 0; i < G_N_ELEMENTS(ret->tuples); ++i) {
ret->tuples[i].gain = 0.0;
ret->tuples[i].peak = 0.0;
}
return ret;
}
struct replay_gain_info *
replay_gain_info_dup(const struct replay_gain_info *src)
{
return g_memdup(src, sizeof(*src));
}
void replay_gain_info_free(struct replay_gain_info *info)
{
g_free(info);
}
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