/* 

 * GStreamer

 * Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>

 *

 * 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_KARAOKE_H__

#define __GST_AUDIO_KARAOKE_H__

#include <gst/gst.h>

#include <gst/gst_global.h>

#include <gst/base/gstbasetransform.h>

#include <gst/audio/audio.h>

#include <gst/audio/gstaudiofilter.h>

G_BEGIN_DECLS

#define GST_TYPE_AUDIO_KARAOKE            (gst_audio_karaoke_get_type())

#define GST_AUDIO_KARAOKE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_KARAOKE,GstAudioKaraoke))

#define GST_IS_AUDIO_KARAOKE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_KARAOKE))

#define GST_AUDIO_KARAOKE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))

#define GST_IS_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_KARAOKE))

#define GST_AUDIO_KARAOKE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))

typedef struct _GstAudioKaraoke GstAudioKaraoke;

typedef struct _GstAudioKaraokeClass GstAudioKaraokeClass;

typedef void (*GstAudioKaraokeProcessFunc) (GstAudioKaraoke *, guint8 *, guint);

struct _GstAudioKaraoke

{

  GstAudioFilter audiofilter;

  gint channels;

  gint rate;

  /* properties */

  gfloat level;

  gfloat mono_level;

  gfloat filter_band;

  gfloat filter_width;

  /* filter coef */

  gfloat A, B, C;

  gfloat y1, y2;

  /* < private > */

  GstAudioKaraokeProcessFunc process;

};

struct _GstAudioKaraokeClass

{

  GstAudioFilterClass parent;

};

#ifdef __SYMBIAN32__

IMPORT_C

#endif

GType gst_audio_karaoke_get_type (void);

G_END_DECLS

#endif /* __GST_AUDIO_KARAOKE_H__ */