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/*
* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AUDIO_ECHO_H__
#define __GST_AUDIO_ECHO_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_ECHO (gst_audio_echo_get_type())
#define GST_AUDIO_ECHO(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_ECHO,GstAudioEcho))
#define GST_IS_AUDIO_ECHO(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_ECHO))
#define GST_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
#define GST_IS_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_ECHO))
#define GST_AUDIO_ECHO_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
typedef struct _GstAudioEcho GstAudioEcho;
typedef struct _GstAudioEchoClass GstAudioEchoClass;
typedef void (*GstAudioEchoProcessFunc) (GstAudioEcho *, guint8 *, guint);
struct _GstAudioEcho
{
GstAudioFilter audiofilter;
guint64 delay;
guint64 max_delay;
gfloat intensity;
gfloat feedback;
gboolean surdelay;
guint64 surround_mask;
/* < private > */
GstAudioEchoProcessFunc process;
guint delay_frames;
guint8 *buffer;
guint buffer_pos;
guint buffer_size;
guint buffer_size_frames;
GMutex lock;
};
struct _GstAudioEchoClass
{
GstAudioFilterClass parent;
};
GType gst_audio_echo_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (audioecho);
G_END_DECLS
#endif /* __GST_AUDIO_ECHO_H__ */
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