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 
21 #ifndef __GST_DVDEMUX_H__
22 #define __GST_DVDEMUX_H__
23 
24 #include <gst/gst.h>
25 #include <libdv/dv.h>
26 #include <gst/base/gstadapter.h>
27 
28 G_BEGIN_DECLS
29 
30 #define GST_TYPE_DVDEMUX \
31   (gst_dvdemux_get_type())
32 #define GST_DVDEMUX(obj) \
33   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVDEMUX,GstDVDemux))
34 #define GST_DVDEMUX_CLASS(klass) \
35   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVDEMUX,GstDVDemuxClass))
36 #define GST_IS_DVDEMUX(obj) \
37   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVDEMUX))
38 #define GST_IS_DVDEMUX_CLASS(klass) \
39   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVDEMUX))
40 
41 
42 typedef struct _GstDVDemux GstDVDemux;
43 typedef struct _GstDVDemuxClass GstDVDemuxClass;
44 
45 typedef gboolean (*GstDVDemuxSeekHandler) (GstDVDemux *demux, GstPad * pad, GstEvent * event);
46 
47 
48 struct _GstDVDemux {
49   GstElement     element;
50 
51   GstPad        *sinkpad;
52   GstPad        *videosrcpad;
53   GstPad        *audiosrcpad;
54 
55   gboolean       have_group_id;
56   guint          group_id;
57 
58   dv_decoder_t  *decoder;
59 
60   GstAdapter    *adapter;
61   gint           frame_len;
62 
63   /* video params */
64   gint           framerate_numerator;
65   gint           framerate_denominator;
66   gint           height;
67   gboolean       wide;
68   /* audio params */
69   gint           frequency;
70   gint           channels;
71 
72   gboolean       discont;
73   gint64         frame_offset;
74   gint64         audio_offset;
75   gint64         video_offset;
76 
77   GstDVDemuxSeekHandler seek_handler;
78   GstSegment     byte_segment;
79   gboolean       upstream_time_segment;
80   GstSegment     time_segment;
81   gboolean       need_segment;
82   guint32        segment_seqnum;
83   gboolean       new_media;
84   int            frames_since_new_media;
85 
86   gint           found_header; /* ATOMIC */
87   GstEvent      *seek_event;
88   GstEvent	*pending_segment;
89   GstEvent      *tag_event;
90 
91   gint16        *audio_buffers[4];
92 };
93 
94 struct _GstDVDemuxClass {
95   GstElementClass parent_class;
96 };
97 
98 GType gst_dvdemux_get_type (void);
99 
100 G_END_DECLS
101 
102 #endif /* __GST_DVDEMUX_H__ */
103