1 /*
2  * gstmidiparse - midiparse plugin for gstreamer
3  *
4  * Copyright 2007 Wouter Paesen <wouter@blue-gate.be>
5  * Copyright 2013 Wim Taymans <wim.taymans@gmail.be>
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Library General Public
9  * License as published by the Free Software Foundation; either
10  * version 2 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Library General Public License for more details.
16  *
17  * You should have received a copy of the GNU Library General Public
18  * License along with this library; if not, write to the
19  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef __GST_MIDIPARSE_H__
24 #define __GST_MIDIPARSE_H__
25 
26 #include <gst/gst.h>
27 #include <gst/base/gstadapter.h>
28 #include <midiparse.h>
29 
30 G_BEGIN_DECLS
31 
32 #define GST_TYPE_MIDI_PARSE \
33   (gst_midi_parse_get_type())
34 #define GST_MIDI_PARSE(obj) \
35   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MIDI_PARSE,GstMidiParse))
36 #define GST_MIDI_PARSE_CLASS(klass) \
37   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MIDI_PARSE,GstMidiParseClass))
38 #define GST_IS_MIDI_PARSE(obj) \
39   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MIDI_PARSE))
40 #define GST_IS_MIDI_PARSE_CLASS(klass) \
41   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MIDI_PARSE))
42 
43 typedef struct _GstMidiParse GstMidiParse;
44 typedef struct _GstMidiParseClass GstMidiParseClass;
45 
46 typedef enum {
47   GST_MIDI_PARSE_STATE_LOAD,
48   GST_MIDI_PARSE_STATE_PARSE,
49   GST_MIDI_PARSE_STATE_PLAY
50 } GstMidiParseState;
51 
52 struct _GstMidiParse
53 {
54   GstElement element;
55 
56   GstPad *sinkpad, *srcpad;
57 
58   gboolean have_group_id;
59   guint group_id;
60 
61   /* input stream properties */
62   GstMidiParseState state;
63 
64   guint tempo;
65   guint16 ntracks;
66   guint16 division;
67 
68   GList *tracks;
69   guint  track_count;
70 
71   guint64 offset;
72   GstAdapter *adapter;
73   guint8 *data;
74 
75   /* output data */
76   gboolean discont;
77   GstSegment segment;
78   gboolean segment_pending;
79   guint32 seqnum;
80 
81   guint64 pulse;
82 };
83 
84 struct _GstMidiParseClass
85 {
86     GstElementClass parent_class;
87 };
88 
89 GType gst_midi_parse_get_type (void);
90 
91 G_END_DECLS
92 
93 #endif /* __GST_MIDI_PARSE_H__ */
94