1 files changed, 113 insertions, 0 deletions
diff --git a/plugins/gtkui/eq.c b/plugins/gtkui/eq.c
new file mode 100644
index 00000000..48b66f5c
--- /dev/null
+++ b/plugins/gtkui/eq.c
@@ -0,0 +1,113 @@
+/*
+    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
+    Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.net>
+
+    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 <gtk/gtk.h>
+#include <string.h>
+#include <math.h>
+#include "gtkui.h"
+#include "support.h"
+#include "../supereq/supereq.h"
+
+static GtkWidget *eqwin;
+
+float
+db_to_amp (float dB) {
+    const float ln10=2.3025850929940002f;
+    return exp(ln10*dB/20.f);
+}
+
+float
+amp_to_db (float amp) {
+    return 20*log10 (amp);
+}
+
+void
+eq_value_changed (GtkRange *range, gpointer  user_data) {
+    int band = (intptr_t)user_data;
+    DB_supereq_dsp_t *eq = NULL;
+    DB_dsp_t **plugs = deadbeef->plug_get_dsp_list ();
+    // find eq plugin
+    for (int i = 0; plugs[i]; i++) {
+        if (plugs[i]->plugin.id && !strcmp (plugs[i]->plugin.id, "supereq")) {
+            eq = (DB_supereq_dsp_t *)plugs[i];
+            float val = gtk_range_get_value (range);
+            val = db_to_amp (val);
+            eq->set_band (band, val);
+            break;
+        }
+    }
+}
+
+void
+eq_init_widgets (GtkWidget *container) {
+    int i;
+    GtkWidget *hbox = gtk_hbox_new (FALSE, 0);
+    gtk_widget_show (hbox);
+    gtk_container_add (GTK_CONTAINER (container), hbox);
+
+    DB_supereq_dsp_t *eq = NULL;
+    DB_dsp_t **plugs = deadbeef->plug_get_dsp_list ();
+    // find eq plugin
+    for (i = 0; plugs[i]; i++) {
+        if (plugs[i]->plugin.id && !strcmp (plugs[i]->plugin.id, "supereq")) {
+            eq = (DB_supereq_dsp_t *)plugs[i];
+            break;
+        }
+    }
+
+    for (i = 0; i < 18; i++) {
+        GtkWidget *scale = gtk_vscale_new_with_range (-20, 20, 1);
+        gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_BOTTOM);
+        gtk_scale_set_draw_value (GTK_SCALE (scale), TRUE);
+        gtk_range_set_inverted (GTK_RANGE (scale), TRUE);
+        gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
+        if (eq) {
+            float val = eq->get_band (i);
+            val = amp_to_db (val);
+            if (val < -20) {
+                val = -20;
+            }
+            if (val > 20) {
+                val = 20;
+            }
+            gtk_range_set_value (GTK_RANGE (scale), val);
+        }
+        g_signal_connect (scale, "value_changed", G_CALLBACK (eq_value_changed), (gpointer)(intptr_t)i);
+        gtk_widget_show (scale);
+        gtk_box_pack_start (GTK_BOX (hbox), scale, FALSE, FALSE, 0);
+    }
+}
+
+void
+eq_window_show (void) {
+    if (!eqwin) {
+        eqwin = gtk_hbox_new (FALSE, 0);
+        gtk_widget_set_size_request (eqwin, -1, 200);
+        eq_init_widgets (eqwin);
+        GtkWidget *cont = lookup_widget (mainwin, "vbox1");
+        gtk_box_pack_start (GTK_BOX (cont), eqwin, FALSE, FALSE, 0);
+    }
+    gtk_widget_show (eqwin);
+}
+
+void
+eq_window_hide (void) {
+    if (eqwin) {
+        gtk_widget_hide (eqwin);
+    }
+}