1 /*
2  * GStreamer
3  * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18  * Boston, MA 02110-1301, USA.
19  *
20  */
21 
22 #ifndef __GST_AUDIO_IIR_FILTER_H__
23 #define __GST_AUDIO_IIR_FILTER_H__
24 
25 #include <gst/gst.h>
26 #include <gst/audio/gstaudiofilter.h>
27 
28 #include "audiofxbaseiirfilter.h"
29 
30 G_BEGIN_DECLS
31 
32 #define GST_TYPE_AUDIO_IIR_FILTER \
33   (gst_audio_iir_filter_get_type())
34 #define GST_AUDIO_IIR_FILTER(obj) \
35   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_IIR_FILTER,GstAudioIIRFilter))
36 #define GST_AUDIO_IIR_FILTER_CLASS(klass) \
37   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_IIR_FILTER,GstAudioIIRFilterClass))
38 #define GST_IS_AUDIO_IIR_FILTER(obj) \
39   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_IIR_FILTER))
40 #define GST_IS_AUDIO_IIR_FILTER_CLASS(klass) \
41   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_IIR_FILTER))
42 
43 typedef struct _GstAudioIIRFilter GstAudioIIRFilter;
44 typedef struct _GstAudioIIRFilterClass GstAudioIIRFilterClass;
45 
46 /**
47  * GstAudioIIRFilter:
48  *
49  * Opaque data structure.
50  */
51 struct _GstAudioIIRFilter {
52   GstAudioFXBaseIIRFilter parent;
53 
54   GValueArray *a, *b;
55 
56   /* < private > */
57   GMutex lock;
58 };
59 
60 struct _GstAudioIIRFilterClass {
61   GstAudioFXBaseIIRFilterClass parent;
62 
63   void (*rate_changed) (GstElement * element, gint rate);
64 };
65 
66 GType gst_audio_iir_filter_get_type (void);
67 
68 G_END_DECLS
69 
70 #endif /* __GST_AUDIO_IIR_FILTER_H__ */
71