1 files changed, 71 insertions, 0 deletions
diff --git a/gst/audiofx/audioecho.h b/gst/audiofx/audioecho.h
new file mode 100755
index 0000000..a3a3de3
--- /dev/null
+++ b/gst/audiofx/audioecho.h
@@ -0,0 +1,71 @@
+/* 
+ * GStreamer
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_AUDIO_ECHO_H__
+#define __GST_AUDIO_ECHO_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/audio/audio.h>
+#include <gst/audio/gstaudiofilter.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_ECHO            (gst_audio_echo_get_type())
+#define GST_AUDIO_ECHO(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_ECHO,GstAudioEcho))
+#define GST_IS_AUDIO_ECHO(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_ECHO))
+#define GST_AUDIO_ECHO_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
+#define GST_IS_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_ECHO))
+#define GST_AUDIO_ECHO_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
+typedef struct _GstAudioEcho GstAudioEcho;
+typedef struct _GstAudioEchoClass GstAudioEchoClass;
+
+typedef void (*GstAudioEchoProcessFunc) (GstAudioEcho *, guint8 *, guint);
+
+struct _GstAudioEcho
+{
+  GstAudioFilter audiofilter;
+
+  guint64 delay;
+  guint64 max_delay;
+  gfloat intensity;
+  gfloat feedback;
+
+  /* < private > */
+  GstAudioEchoProcessFunc process;
+  guint delay_frames;
+  guint8 *buffer;
+  guint buffer_pos;
+  guint buffer_size;
+  guint buffer_size_frames;
+
+  GMutex lock;
+};
+
+struct _GstAudioEchoClass
+{
+  GstAudioFilterClass parent;
+};
+
+GType gst_audio_echo_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_ECHO_H__ */