Tizen 2.0 Releasesubmit/tizen_2.0/20130215.191739accepted/tizen_2.0/20130215.203737tizen_2.0

1 files changed, 80 insertions, 0 deletions

diff --git a/gst/audiofx/audiowsinclimit.h b/gst/audiofx/audiowsinclimit.h
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+/* -*- c-basic-offset: 2 -*-
+ * 
+ * GStreamer
+ * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
+ *               2006 Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.net>
+ *               2007-2009 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ * 
+ * 
+ * this windowed sinc filter is taken from the freely downloadable DSP book,
+ * "The Scientist and Engineer's Guide to Digital Signal Processing",
+ * chapter 16
+ * available at http://www.dspguide.com/
+ *
+ */
+
+#ifndef __GST_AUDIO_WSINC_LIMIT_H__
+#define __GST_AUDIO_WSINC_LIMIT_H__
+
+#include <gst/gst.h>
+#include <gst/audio/gstaudiofilter.h>
+
+#include "audiofxbasefirfilter.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_WSINC_LIMIT \
+  (gst_audio_wsinclimit_get_type())
+#define GST_AUDIO_WSINC_LIMIT(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_WSINC_LIMIT,GstAudioWSincLimit))
+#define GST_AUDIO_WSINC_LIMIT_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_WSINC_LIMIT,GstAudioWSincLimitClass))
+#define GST_IS_AUDIO_WSINC_LIMIT(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_WSINC_LIMIT))
+#define GST_IS_AUDIO_WSINC_LIMIT_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_WSINC_LIMIT))
+
+typedef struct _GstAudioWSincLimit GstAudioWSincLimit;
+typedef struct _GstAudioWSincLimitClass GstAudioWSincLimitClass;
+
+/**
+ * GstAudioWSincLimit:
+ *
+ * Opaque data structure.
+ */
+struct _GstAudioWSincLimit {
+  GstAudioFXBaseFIRFilter parent;
+
+  gint mode;
+  gint window;
+  gfloat cutoff;
+  gint kernel_length;
+
+  /* < private > */
+  GMutex *lock;
+};
+
+struct _GstAudioWSincLimitClass {
+  GstAudioFXBaseFIRFilterClass parent;
+};
+
+GType gst_audio_wsinclimit_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_WSINC_LIMIT_H__ */