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Member "gst-plugins-good-1.20.3/gst/audiofx/audioecho.h" (15 Jun 2022, 2359 Bytes) of package /linux/misc/gst-plugins-good-1.20.3.tar.xz:


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    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., 51 Franklin St, Fifth Floor,
   18  * Boston, MA 02110-1301, USA.
   19  */
   20 
   21 #ifndef __GST_AUDIO_ECHO_H__
   22 #define __GST_AUDIO_ECHO_H__
   23 
   24 #include <gst/gst.h>
   25 #include <gst/base/gstbasetransform.h>
   26 #include <gst/audio/audio.h>
   27 #include <gst/audio/gstaudiofilter.h>
   28 
   29 G_BEGIN_DECLS
   30 
   31 #define GST_TYPE_AUDIO_ECHO            (gst_audio_echo_get_type())
   32 #define GST_AUDIO_ECHO(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_ECHO,GstAudioEcho))
   33 #define GST_IS_AUDIO_ECHO(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_ECHO))
   34 #define GST_AUDIO_ECHO_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
   35 #define GST_IS_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_ECHO))
   36 #define GST_AUDIO_ECHO_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass))
   37 typedef struct _GstAudioEcho GstAudioEcho;
   38 typedef struct _GstAudioEchoClass GstAudioEchoClass;
   39 
   40 typedef void (*GstAudioEchoProcessFunc) (GstAudioEcho *, guint8 *, guint);
   41 
   42 struct _GstAudioEcho
   43 {
   44   GstAudioFilter audiofilter;
   45 
   46   guint64 delay;
   47   guint64 max_delay;
   48   gfloat intensity;
   49   gfloat feedback;
   50   gboolean surdelay;
   51   guint64 surround_mask;
   52 
   53   /* < private > */
   54   GstAudioEchoProcessFunc process;
   55   guint delay_frames;
   56   guint8 *buffer;
   57   guint buffer_pos;
   58   guint buffer_size;
   59   guint buffer_size_frames;
   60 
   61   GMutex lock;
   62 };
   63 
   64 struct _GstAudioEchoClass
   65 {
   66   GstAudioFilterClass parent;
   67 };
   68 
   69 GType gst_audio_echo_get_type (void);
   70 
   71 GST_ELEMENT_REGISTER_DECLARE (audioecho);
   72 
   73 G_END_DECLS
   74 
   75 #endif /* __GST_AUDIO_ECHO_H__ */