/* -*- 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
*
* 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.
- *
- *
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, 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
*
*/
-#ifndef __GST_BPWSINC_H__
-#define __GST_BPWSINC_H__
+#ifndef __GST_AUDIO_WSINC_BAND_H__
+#define __GST_AUDIO_WSINC_BAND_H__
-#include "gstfilter.h"
#include <gst/gst.h>
#include <gst/audio/gstaudiofilter.h>
-G_BEGIN_DECLS
+#include "audiofxbasefirfilter.h"
-#define GST_TYPE_BPWSINC \
- (gst_bpwsinc_get_type())
-#define GST_BPWSINC(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BPWSINC,GstBPWSinc))
-#define GST_BPWSINC_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BPWSINC,GstBPWSincClass))
-#define GST_IS_BPWSINC(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BPWSINC))
-#define GST_IS_BPWSINC_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BPWSINC))
+G_BEGIN_DECLS
-typedef struct _GstBPWSinc GstBPWSinc;
-typedef struct _GstBPWSincClass GstBPWSincClass;
+#define GST_TYPE_AUDIO_WSINC_BAND \
+ (gst_audio_wsincband_get_type())
+#define GST_AUDIO_WSINC_BAND(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_WSINC_BAND,GstAudioWSincBand))
+#define GST_AUDIO_WSINC_BAND_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_WSINC_BAND,GstAudioWSincBandClass))
+#define GST_IS_AUDIO_WSINC_BAND(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_WSINC_BAND))
+#define GST_IS_AUDIO_WSINC_BAND_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_WSINC_BAND))
-typedef void (*GstBPWSincProcessFunc) (GstBPWSinc *, guint8 *, guint8 *, guint);
+typedef struct _GstAudioWSincBand GstAudioWSincBand;
+typedef struct _GstAudioWSincBandClass GstAudioWSincBandClass;
/**
- * GstBPWSinc:
+ * GstAudioWSincBand:
*
* Opaque data structure.
*/
-struct _GstBPWSinc {
- GstAudioFilter element;
-
- /* < private > */
- GstBPWSincProcessFunc process;
+struct _GstAudioWSincBand {
+ GstAudioFXBaseFIRFilter parent;
gint mode;
gint window;
- gdouble lower_frequency, upper_frequency;
+ gfloat lower_frequency, upper_frequency;
gint kernel_length; /* length of the filter kernel */
- gdouble *residue; /* buffer for left-over samples from previous buffer */
- gdouble *kernel;
- gboolean have_kernel;
+ /* < private > */
+ GMutex lock;
};
-struct _GstBPWSincClass {
- GstAudioFilterClass parent_class;
+struct _GstAudioWSincBandClass {
+ GstAudioFilterClass parent;
};
-GType gst_bpwsinc_get_type (void);
+GType gst_audio_wsincband_get_type (void);
G_END_DECLS
-#endif /* __GST_BPWSINC_H__ */
+#endif /* __GST_AUDIO_WSINC_BAND_H__ */