1 files changed, 92 insertions, 0 deletions
diff --git a/sys/oss/gstossmixerelement.c b/sys/oss/gstossmixerelement.c
new file mode 100644
index 00000000..28232d66
--- /dev/null
+++ b/sys/oss/gstossmixerelement.c
@@ -0,0 +1,92 @@
+/* OSS mixer interface element.
+ * Copyright (C) 2005 Andrew Vander Wingo <wingo@pobox.com>
+ *
+ * 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 "gstossmixerelement.h"
+
+
+static GstElementDetails gst_oss_mixer_element_details =
+GST_ELEMENT_DETAILS ("OSS Mixer",
+    "Generic/Audio",
+    "Control sound input and output levels with OSS",
+    "Andrew Vander Wingo <wingo@pobox.com>");
+
+
+GST_BOILERPLATE_WITH_INTERFACE (GstOssMixerElement, gst_oss_mixer_element,
+    GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER,
+    gst_oss_mixer_element);
+
+GST_IMPLEMENT_OSS_MIXER_METHODS (GstOssMixerElement, gst_oss_mixer_element);
+
+static GstElementStateReturn gst_oss_mixer_element_change_state (GstElement *
+    element);
+
+static void
+gst_oss_mixer_element_base_init (gpointer klass)
+{
+  gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
+      &gst_oss_mixer_element_details);
+}
+
+static void
+gst_oss_mixer_element_class_init (GstOssMixerElementClass * klass)
+{
+  GstElementClass *element_class;
+
+  element_class = (GstElementClass *) klass;
+
+  element_class->change_state = gst_oss_mixer_element_change_state;
+}
+
+static void
+gst_oss_mixer_element_init (GstOssMixerElement * this)
+{
+  this->mixer = NULL;
+}
+
+static GstElementStateReturn
+gst_oss_mixer_element_change_state (GstElement * element)
+{
+  GstOssMixerElement *this = GST_OSS_MIXER_ELEMENT (element);
+
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_NULL_TO_READY:
+      if (!this->mixer) {
+        this->mixer = gst_ossmixer_new ("/dev/mixer", GST_OSS_MIXER_ALL);
+      }
+      break;
+    case GST_STATE_READY_TO_NULL:
+      if (this->mixer) {
+        gst_ossmixer_free (this->mixer);
+        this->mixer = NULL;
+      }
+      break;
+    default:
+      break;
+  }
+
+  if (GST_ELEMENT_CLASS (parent_class)->change_state)
+    return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+
+  return GST_STATE_SUCCESS;
+}