|
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., 59 Temple Place - Suite 330, |
|
18 * Boston, MA 02111-1307, USA. |
|
19 */ |
|
20 |
|
21 #ifndef __GST_AUDIO_ECHO_H__ |
|
22 #define __GST_AUDIO_ECHO_H__ |
|
23 |
|
24 #include <gst/gst.h> |
|
25 #include <gst/gst_global.h> |
|
26 #include <gst/base/gstbasetransform.h> |
|
27 #include <gst/audio/audio.h> |
|
28 #include <gst/audio/gstaudiofilter.h> |
|
29 |
|
30 G_BEGIN_DECLS |
|
31 |
|
32 #define GST_TYPE_AUDIO_ECHO (gst_audio_echo_get_type()) |
|
33 #define GST_AUDIO_ECHO(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_ECHO,GstAudioEcho)) |
|
34 #define GST_IS_AUDIO_ECHO(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_ECHO)) |
|
35 #define GST_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass)) |
|
36 #define GST_IS_AUDIO_ECHO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_ECHO)) |
|
37 #define GST_AUDIO_ECHO_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_ECHO,GstAudioEchoClass)) |
|
38 typedef struct _GstAudioEcho GstAudioEcho; |
|
39 typedef struct _GstAudioEchoClass GstAudioEchoClass; |
|
40 |
|
41 typedef void (*GstAudioEchoProcessFunc) (GstAudioEcho *, guint8 *, guint); |
|
42 |
|
43 struct _GstAudioEcho |
|
44 { |
|
45 GstAudioFilter audiofilter; |
|
46 |
|
47 guint64 delay; |
|
48 guint64 max_delay; |
|
49 gfloat intensity; |
|
50 gfloat feedback; |
|
51 |
|
52 /* < private > */ |
|
53 GstAudioEchoProcessFunc process; |
|
54 guint delay_frames; |
|
55 guint8 *buffer; |
|
56 guint buffer_pos; |
|
57 guint buffer_size; |
|
58 guint buffer_size_frames; |
|
59 }; |
|
60 |
|
61 struct _GstAudioEchoClass |
|
62 { |
|
63 GstAudioFilterClass parent; |
|
64 }; |
|
65 #ifdef __SYMBIAN32__ |
|
66 IMPORT_C |
|
67 #endif |
|
68 |
|
69 |
|
70 GType gst_audio_echo_get_type (void); |
|
71 |
|
72 G_END_DECLS |
|
73 |
|
74 #endif /* __GST_AUDIO_ECHO_H__ */ |