1 /* GStreamer DCA parser
2  * Copyright (C) 2010 Tim-Philipp Müller <tim centricular net>
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_DCA_PARSE_H__
21 #define __GST_DCA_PARSE_H__
22 
23 #include <gst/gst.h>
24 #include <gst/base/gstbaseparse.h>
25 
26 G_BEGIN_DECLS
27 
28 #define GST_TYPE_DCA_PARSE \
29   (gst_dca_parse_get_type())
30 #define GST_DCA_PARSE(obj) \
31   (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_DCA_PARSE, GstDcaParse))
32 #define GST_DCA_PARSE_CLASS(klass) \
33   (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_DCA_PARSE, GstDcaParseClass))
34 #define GST_IS_DCA_PARSE(obj) \
35   (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_DCA_PARSE))
36 #define GST_IS_DCA_PARSE_CLASS(klass) \
37   (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_DCA_PARSE))
38 
39 #define DCA_MIN_FRAMESIZE 96
40 #define DCA_MAX_FRAMESIZE 18725 /* 16384*16/14 */
41 
42 typedef struct _GstDcaParse GstDcaParse;
43 typedef struct _GstDcaParseClass GstDcaParseClass;
44 
45 /**
46  * GstDcaParse:
47  *
48  * The opaque GstDcaParse object
49  */
50 struct _GstDcaParse {
51   GstBaseParse baseparse;
52 
53   /*< private >*/
54   gint                  rate;
55   gint                  channels;
56   gint                  depth;
57   gint                  endianness;
58   gint                  block_size;
59   gint                  frame_size;
60 
61   gboolean              sent_codec_tag;
62 
63   guint32               last_sync;
64 
65   GstPadChainFunction   baseparse_chainfunc;
66 };
67 
68 /**
69  * GstDcaParseClass:
70  * @parent_class: Element parent class.
71  *
72  * The opaque GstDcaParseClass data structure.
73  */
74 struct _GstDcaParseClass {
75   GstBaseParseClass baseparse_class;
76 };
77 
78 GType gst_dca_parse_get_type (void);
79 
80 G_END_DECLS
81 
82 #endif /* __GST_DCA_PARSE_H__ */
83