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/*
* 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/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;
};
GType gst_audio_karaoke_get_type (void);
G_END_DECLS
#endif /* __GST_AUDIO_KARAOKE_H__ */
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