freeverb: add a freeverb port

Freeverb is a public domain reverb implementation. Port it as a gstreamer
element and make use of gstreamer specific features (gap aware, disconts,
controller, ...).

1 files changed, 71 insertions, 0 deletions

diff --git a/gst/freeverb/gstfreeverb.h b/gst/freeverb/gstfreeverb.h
new file mode 100644
index 000000000..23e3940fa
--- /dev/null
+++ b/gst/freeverb/gstfreeverb.h
@@ -0,0 +1,71 @@
+/* 
+ * GStreamer
+ * Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
+ *
+ * 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 __GST_FREEVERB_H__
+#define __GST_FREEVERB_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_FREEVERB            (gst_freeverb_get_type())
+#define GST_FREEVERB(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FREEVERB,GstFreeverb))
+#define GST_IS_FREEVERB(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FREEVERB))
+#define GST_FREEVERB_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_FREEVERB,GstFreeverbClass))
+#define GST_IS_FREEVERB_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_FREEVERB))
+#define GST_FREEVERB_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_FREEVERB,GstFreeverbClass))
+
+typedef struct _GstFreeverb        GstFreeverb;
+typedef struct _GstFreeverbClass   GstFreeverbClass;
+typedef struct _GstFreeverbPrivate GstFreeverbPrivate;
+
+typedef gboolean (*GstFreeverbProcessFunc)(GstFreeverb*, guint8*, guint8*, guint);
+
+struct _GstFreeverb {
+  GstBaseTransform element;
+  
+  /* < private > */
+  gfloat room_size;
+  gfloat damping;
+  gfloat pan_width;
+  gfloat level;
+
+  GstFreeverbProcessFunc process;
+  gint channels;
+  gboolean format_float;
+  gint width;
+  gint method;
+  gint rate;
+  
+  gboolean drained;
+  
+  GstFreeverbPrivate *priv;
+};
+
+struct _GstFreeverbClass {
+  GstBaseTransformClass parent_class;
+};
+
+GType gst_freeverb_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_FREEVERB_H__ */