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diff --git a/gst-mixer/src/volume.h b/gst-mixer/src/volume.h
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+/* MATE Volume Control
+ * Copyright (C) 2003-2004 Ronald Bultje <[email protected]>
+ *
+ * volume.h: representation of a track's volume channels
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GVC_VOLUME_H__
+#define __GVC_VOLUME_H__
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gst/interfaces/mixer.h>
+
+G_BEGIN_DECLS
+
+#define MATE_VOLUME_CONTROL_TYPE_VOLUME \
+ (mate_volume_control_volume_get_type ())
+#define MATE_VOLUME_CONTROL_VOLUME(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), MATE_VOLUME_CONTROL_TYPE_VOLUME, \
+ MateVolumeControlVolume))
+#define MATE_VOLUME_CONTROL_VOLUME_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), MATE_VOLUME_CONTROL_TYPE_VOLUME, \
+ MateVolumeControlVolumeClass))
+#define MATE_VOLUME_CONTROL_IS_VOLUME(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MATE_VOLUME_CONTROL_TYPE_VOLUME))
+#define MATE_VOLUME_CONTROL_IS_VOLUME_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), MATE_VOLUME_CONTROL_TYPE_VOLUME))
+
+typedef struct _MateVolumeControlVolume {
+ GtkFixed parent;
+
+ /* track + mixer */
+ GstMixer *mixer;
+ GstMixerTrack *track;
+
+ /* padding */
+ gint padding;
+
+ /* childs */
+ GList *scales;
+ GtkWidget *button, *image;
+
+ /* this will be set to true if the user changes volumes
+ * in the mixer as a response to a user query. It prevents
+ * infinite loops. */
+ gboolean locked;
+
+ /* signal ID */
+ guint id;
+} MateVolumeControlVolume;
+
+typedef struct _MateVolumeControlVolumeClass {
+ GtkFixedClass klass;
+} MateVolumeControlVolumeClass;
+
+GType mate_volume_control_volume_get_type (void);
+GtkWidget * mate_volume_control_volume_new (GstMixer *mixer,
+ GstMixerTrack *track,
+ gint padding);
+void mate_volume_control_volume_ask (MateVolumeControlVolume *volume,
+ gboolean * real_zero,
+ gboolean * slider_zero);
+void mate_volume_control_volume_update (MateVolumeControlVolume *volume);
+
+G_END_DECLS
+
+#endif /* __GVC_VOLUME_H__ */