1 files changed, 134 insertions, 0 deletions
diff --git a/gst-libs/gst/mixer/mixer.c b/gst-libs/gst/mixer/mixer.c
new file mode 100644
index 00000000..3e6ce63b
--- /dev/null
+++ b/gst-libs/gst/mixer/mixer.c
@@ -0,0 +1,134 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wim.taymans@chello.be>
+ *
+ * mixer.c: mixer design virtual class function wrappers
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/mixer/mixer.h>
+
+static void 	gst_mixer_class_init	(GstMixerClass *klass);
+
+GType
+gst_mixer_get_type (void)
+{
+  static GType gst_mixer_type = 0;
+
+  if (!gst_mixer_type) {
+    static const GTypeInfo gst_mixer_info = {
+      sizeof (GstMixerClass),
+      (GBaseInitFunc) gst_mixer_class_init,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      0,
+      0,
+      NULL,
+    };
+
+    gst_mixer_type = g_type_register_static (G_TYPE_INTERFACE,
+					     "GstMixer",
+					     &gst_mixer_info, 0);
+    g_type_interface_add_prerequisite (gst_mixer_type,
+				       GST_TYPE_INTERFACE);
+  }
+
+  return gst_mixer_type;
+}
+
+static void
+gst_mixer_class_init (GstMixerClass *klass)
+{
+  /* default virtual functions */
+  klass->list_channels = NULL;
+  klass->set_volume = NULL;
+  klass->get_volume = NULL;
+  klass->set_mute = NULL;
+  klass->set_record = NULL;
+}
+
+const GList *
+gst_mixer_list_channels	(GstMixer *mixer)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  if (klass->list_channels) {
+    return klass->list_channels (mixer);
+  }
+
+  return NULL;
+}
+
+void
+gst_mixer_set_volume (GstMixer        *mixer,
+		      GstMixerChannel *channel,
+		      gint            *volumes)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  if (klass->set_volume) {
+    klass->set_volume (mixer, channel, volumes);
+  }
+}
+
+void
+gst_mixer_get_volume (GstMixer        *mixer,
+		      GstMixerChannel *channel,
+		      gint            *volumes)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  if (klass->get_volume) {
+    klass->get_volume (mixer, channel, volumes);
+  } else {
+    gint i;
+
+    for (i = 0; i < channel->num_channels; i++) {
+      volumes[i] = 0;
+    }
+  }
+}
+
+void
+gst_mixer_set_mute (GstMixer        *mixer,
+		    GstMixerChannel *channel,
+		    gboolean         mute)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  if (klass->set_mute) {
+    klass->set_mute (mixer, channel, mute);
+  }
+}
+
+void
+gst_mixer_set_record (GstMixer        *mixer,
+		      GstMixerChannel *channel,
+		      gboolean         record)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  if (klass->set_record) {
+    klass->set_record (mixer, channel, record);
+  }
+}