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., 59 Temple Place - Suite 330,

    18  * Boston, MA 02111-1307, 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/gst_global.h>

    27 #include <gst/audio/gstaudiofilter.h>

    28 

    29 #include "audiofxbaseiirfilter.h"

    30 

    31 G_BEGIN_DECLS

    32 

    33 #define GST_TYPE_AUDIO_IIR_FILTER \

    34   (gst_audio_iir_filter_get_type())

    35 #define GST_AUDIO_IIR_FILTER(obj) \

    36   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_IIR_FILTER,GstAudioIIRFilter))

    37 #define GST_AUDIO_IIR_FILTER_CLASS(klass) \

    38   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_IIR_FILTER,GstAudioIIRFilterClass))

    39 #define GST_IS_AUDIO_IIR_FILTER(obj) \

    40   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_IIR_FILTER))

    41 #define GST_IS_AUDIO_IIR_FILTER_CLASS(klass) \

    42   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_IIR_FILTER))

    43 

    44 typedef struct _GstAudioIIRFilter GstAudioIIRFilter;

    45 typedef struct _GstAudioIIRFilterClass GstAudioIIRFilterClass;

    46 

    47 /**

    48  * GstAudioIIRFilter:

    49  *

    50  * Opaque data structure.

    51  */

    52 struct _GstAudioIIRFilter {

    53   GstAudioFXBaseIIRFilter parent;

    54 

    55   GValueArray *a, *b;

    56 

    57   /* < private > */

    58   GMutex *lock;

    59   gint rate;

    60 };

    61 

    62 struct _GstAudioIIRFilterClass {

    63   GstAudioFXBaseIIRFilterClass parent;

    64 

    65   void (*rate_changed) (GstElement * element, gint rate);

    66 };

    67 #ifdef __SYMBIAN32__

    68 IMPORT_C

    69 #endif

    70 

    71 

    72 GType gst_audio_iir_filter_get_type (void);

    73 

    74 G_END_DECLS

    75 

    76 #endif /* __GST_AUDIO_IIR_FILTER_H__ */