* 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,
#include <gst/gst.h>
#include <gst/audio/gstaudiofilter.h>
+#include "audiofxbasefirfilter.h"
+
G_BEGIN_DECLS
#define GST_TYPE_AUDIO_WSINC_LIMIT \
- (audio_wsinclimit_get_type())
+ (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) \
typedef struct _GstAudioWSincLimit GstAudioWSincLimit;
typedef struct _GstAudioWSincLimitClass GstAudioWSincLimitClass;
-typedef void (*GstAudioWSincLimitProcessFunc) (GstAudioWSincLimit *, guint8 *, guint8 *, guint);
-
/**
* GstAudioWSincLimit:
*
* Opaque data structure.
*/
struct _GstAudioWSincLimit {
- GstAudioFilter element;
-
- /* < private > */
- GstAudioWSincLimitProcessFunc process;
+ GstAudioFXBaseFIRFilter parent;
gint mode;
gint window;
gfloat cutoff;
- gint kernel_length; /* length of the filter kernel */
+ gint kernel_length;
- gdouble *residue; /* buffer for left-over samples from previous buffer */
- gdouble *kernel; /* filter kernel */
- gboolean have_kernel;
- gint residue_length;
- guint64 latency;
- GstClockTime next_ts;
- guint64 next_off;
+ /* < private > */
+ GMutex lock;
};
struct _GstAudioWSincLimitClass {
- GstAudioFilterClass parent_class;
+ GstAudioFXBaseFIRFilterClass parent;
};
-GType audio_wsinclimit_get_type (void);
+GType gst_audio_wsinclimit_get_type (void);
G_END_DECLS