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diff --git a/gst-mixer/src/track.h b/gst-mixer/src/track.h
new file mode 100644
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+++ b/gst-mixer/src/track.h
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+/* MATE Volume Control
+ * Copyright (C) 2003-2004 Ronald Bultje <[email protected]>
+ *
+ * track.h: layout of a single mixer track
+ *
+ * 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_TRACK_H__
+#define __GVC_TRACK_H__
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <mateconf/mateconf-client.h>
+#include <gst/gst.h>
+#include <gst/interfaces/mixer.h>
+
+#include "button.h"
+
+G_BEGIN_DECLS
+
+typedef struct _MateVolumeControlTrack {
+ /* pointer to table in which we write */
+ GtkTable *table;
+ gint pos;
+
+ /* gstreamer object pointers */
+ GstMixer *mixer;
+ GstMixerTrack *track;
+
+ /* widgets associated with this track */
+ GtkWidget *label,
+ *image,
+ *sliderbox,
+ *buttonbox,
+ *toggle,
+ *options,
+ *flagbuttonbox;
+
+ MateVolumeControlButton *mute, *record;
+
+ /* list of slider adjustments */
+ GList *sliders;
+
+ /* separator left/right (or top/bottom) of the actual widget */
+ GtkWidget *left_separator,
+ *right_separator;
+
+ /* whether we're currently "visible" */
+ gboolean visible;
+
+ /* signal IDs */
+ guint id;
+} MateVolumeControlTrack;
+
+MateVolumeControlTrack *
+ mate_volume_control_track_add_playback (GtkTable *table,
+ gint tab_pos,
+ GstMixer *mixer,
+ GstMixerTrack *track,
+ GtkWidget *l_sep,
+ GtkWidget *r_sep,
+ GtkWidget *fbox);
+MateVolumeControlTrack *
+ mate_volume_control_track_add_recording(GtkTable *table,
+ gint tab_pos,
+ GstMixer *mixer,
+ GstMixerTrack *track,
+ GtkWidget *l_sep,
+ GtkWidget *r_sep,
+ GtkWidget *fbox);
+
+MateVolumeControlTrack *
+ mate_volume_control_track_add_switch (GtkTable *table,
+ gint tab_pos,
+ GstMixer *mixer,
+ GstMixerTrack *track,
+ GtkWidget *l_sep,
+ GtkWidget *r_sep,
+ GtkWidget *fbox);
+
+MateVolumeControlTrack *
+ mate_volume_control_track_add_option (GtkTable *table,
+ gint tab_pos,
+ GstMixer *mixer,
+ GstMixerTrack *track,
+ GtkWidget *l_sep,
+ GtkWidget *r_sep,
+ GtkWidget *fbox);
+
+void mate_volume_control_track_free (MateVolumeControlTrack *track);
+
+void mate_volume_control_track_show (MateVolumeControlTrack *track,
+ gboolean visible);
+
+void mate_volume_control_track_update (MateVolumeControlTrack *trkw);
+
+G_END_DECLS
+
+#endif /* __GVC_TRACK_H__ */