/* GStreamer

 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>

 *

 * 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.

 */

#ifndef __GST_AUDIO_FILTER_H__

#define __GST_AUDIO_FILTER_H__

#include <gst/gst.h>

#include <gst/base/gstbasetransform.h>

#include <gst/audio/gstringbuffer.h>

G_BEGIN_DECLS

typedef struct _GstAudioFilter GstAudioFilter;

typedef struct _GstAudioFilterClass GstAudioFilterClass;

#define GST_TYPE_AUDIO_FILTER \

  (gst_audio_filter_get_type())

#define GST_AUDIO_FILTER(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_FILTER,GstAudioFilter))

#define GST_AUDIO_FILTER_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_FILTER,GstAudioFilterClass))

#define GST_IS_AUDIO_FILTER(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_FILTER))

#define GST_IS_AUDIO_FILTER_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_FILTER))

/**

 * GstAudioFilter:

 * @basetransform: Element parent class

 *

 * Base class for audio filters with the same format for input and output.

 *

 * Since: 0.10.12

 */

struct _GstAudioFilter {

  GstBaseTransform basetransform;

  /*< protected >*/

  GstRingBufferSpec format;   /* currently configured format */

  /*< private >*/

  gpointer _gst_reserved[GST_PADDING];

};

/**

 * GstAudioFilterClass:

 * @setup: virtual function called whenever the format changes

 *

 * In addition to the @setup virtual function, you should also override the

 * GstBaseTransform::transform and/or GstBaseTransform::transform_ip virtual

 * function.

 *

 * Since: 0.10.12

 */

struct _GstAudioFilterClass {

  GstBaseTransformClass basetransformclass;

  /* virtual function, called whenever the format changes */

  gboolean  (*setup) (GstAudioFilter * filter, GstRingBufferSpec * format);

  /*< private >*/

  gpointer _gst_reserved[GST_PADDING];

};

#ifdef __SYMBIAN32__

IMPORT_C

#endif

GType   gst_audio_filter_get_type (void);

#ifdef __SYMBIAN32__

IMPORT_C

#endif

void    gst_audio_filter_class_add_pad_templates (GstAudioFilterClass * klass,

                                                  const GstCaps       * allowed_caps);

G_END_DECLS

#endif /* __GST_AUDIO_FILTER_H__ */