1 /* GStreamer
2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __GST_AUDIO_RATE_H__
21 #define __GST_AUDIO_RATE_H__
22 
23 #include <gst/gst.h>
24 #include <gst/audio/audio.h>
25 
26 G_BEGIN_DECLS
27 
28 #define GST_TYPE_AUDIO_RATE \
29   (gst_audio_rate_get_type())
30 #define GST_AUDIO_RATE(obj) \
31   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_RATE,GstAudioRate))
32 #define GST_AUDIO_RATE_CLASS(klass) \
33   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_RATE,GstAudioRate))
34 #define GST_IS_AUDIO_RATE(obj) \
35   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_RATE))
36 #define GST_IS_AUDIO_RATE_CLASS(klass) \
37   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_RATE))
38 
39 typedef struct _GstAudioRate GstAudioRate;
40 typedef struct _GstAudioRateClass GstAudioRateClass;
41 
42 /**
43  * GstAudioRate:
44  *
45  * Opaque data structure.
46  */
47 struct _GstAudioRate
48 {
49   GstElement element;
50 
51   GstPad *sinkpad, *srcpad;
52 
53   /* audio format */
54   GstAudioInfo info;
55 
56   /* stats */
57   guint64 in, out, add, drop;
58   gboolean silent;
59   guint64 tolerance;
60   gboolean skip_to_first;
61 
62   /* audio state */
63   guint64 next_offset;
64   guint64 next_ts;
65 
66   gboolean discont;
67 
68   gboolean new_segment;
69   /* we accept all formats on the sink */
70   GstSegment sink_segment;
71   /* we output TIME format on the src */
72   GstSegment src_segment;
73 };
74 
75 struct _GstAudioRateClass
76 {
77   GstElementClass parent_class;
78 };
79 
80 GType gst_audio_rate_get_type (void);
81 
82 G_END_DECLS
83 
84 #endif /* __GST_AUDIO_RATE_H__ */
85