gst/filter/: Don't forget new files.

Original commit message from CVS:
* gst/filter/gstbpwsinc.h:
* gst/filter/gstiir.h:
* gst/filter/gstlpwsinc.h:
Don't forget new files.

1 files changed, 81 insertions, 0 deletions

diff --git a/gst/audiofx/audiowsinclimit.h b/gst/audiofx/audiowsinclimit.h
new file mode 100644
index 00000000..58d5ec99
--- /dev/null
+++ b/gst/audiofx/audiowsinclimit.h
@@ -0,0 +1,81 @@
+/* -*- c-basic-offset: 2 -*-
+ * 
+ * GStreamer
+ * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
+ *               2006 Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.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.
+ * 
+ * 
+ * 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/
+ *
+ * FIXME:
+ * - this filter is totally unoptimized !
+ * - we do not destroy the allocated memory for filters and residue
+ * - this might be improved upon with bytestream
+ */
+
+#ifndef __GST_LPWSINC_H__
+#define __GST_LPWSINC_H__
+
+#include "gstfilter.h"
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_LPWSINC \
+  (gst_lpwsinc_get_type())
+#define GST_LPWSINC(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_LPWSINC,GstLPWSinc))
+#define GST_LPWSINC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_LPWSINC,GstLPWSincClass))
+#define GST_IS_LPWSINC(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_LPWSINC))
+#define GST_IS_LPWSINC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_LPWSINC))
+
+typedef struct _GstLPWSinc GstLPWSinc;
+typedef struct _GstLPWSincClass GstLPWSincClass;
+
+/**
+ * GstLPWSinc:
+ *
+ * Opaque data structure.
+ */
+struct _GstLPWSinc {
+  GstBaseTransform element;
+
+  void (*process)(GstLPWSinc*, gpointer, gint);
+
+  double frequency;
+  int wing_size;                /* length of a "wing" of the filter; 
+                                   actual length is 2 * wing_size + 1 */
+
+  gfloat *residue;              /* buffer for left-over samples from previous buffer */
+  double *kernel;
+};
+
+struct _GstLPWSincClass {
+  GstBaseTransformClass parent_class;
+};
+
+G_END_DECLS
+
+#endif /* __GST_LPWSINC_H__ */