replay_gain_*: convert to C++

1 files changed, 149 insertions, 0 deletions

diff --git a/src/ReplayGainConfig.cxx b/src/ReplayGainConfig.cxx
new file mode 100644
index 000000000..4d3e2f29d
--- /dev/null
+++ b/src/ReplayGainConfig.cxx
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2003-2013 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.
+ */
+
+#include "config.h"
+
+extern "C" {
+#include "replay_gain_config.h"
+#include "conf.h"
+#include "idle.h"
+}
+
+#include "Playlist.hxx"
+#include "mpd_error.h"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+enum replay_gain_mode replay_gain_mode = REPLAY_GAIN_OFF;
+
+const bool DEFAULT_REPLAYGAIN_LIMIT = true;
+
+float replay_gain_preamp = 1.0;
+float replay_gain_missing_preamp = 1.0;
+bool replay_gain_limit;
+
+const char *
+replay_gain_get_mode_string(void)
+{
+	switch (replay_gain_mode) {
+	case REPLAY_GAIN_AUTO:
+		return "auto";
+
+	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 if (strcmp(p, "auto") == 0)
+		replay_gain_mode = REPLAY_GAIN_AUTO;
+	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)) {
+		MPD_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') {
+			MPD_ERROR("Replaygain preamp \"%s\" is not a number at "
+				  "line %i\n", param->value, param->line);
+		}
+
+		if (f < -15 || f > 15) {
+			MPD_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') {
+			MPD_ERROR("Replaygain missing preamp \"%s\" is not a number at "
+				  "line %i\n", param->value, param->line);
+		}
+
+		if (f < -15 || f > 15) {
+			MPD_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);
+	}
+
+	replay_gain_limit = config_get_bool(CONF_REPLAYGAIN_LIMIT, DEFAULT_REPLAYGAIN_LIMIT);
+}
+
+enum replay_gain_mode replay_gain_get_real_mode(void)
+{
+	enum replay_gain_mode rgm;
+
+	rgm = replay_gain_mode;
+
+	if (rgm == REPLAY_GAIN_AUTO)
+	    rgm = g_playlist.queue.random ? REPLAY_GAIN_TRACK : REPLAY_GAIN_ALBUM;
+
+	return rgm;
+}