1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_AVI_DEMUX_H__
#define __GST_AVI_DEMUX_H__
#include <gst/gst.h>
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-read.h"
G_BEGIN_DECLS
#define GST_TYPE_AVI_DEMUX \
(gst_avi_demux_get_type ())
#define GST_AVI_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux))
#define GST_AVI_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemux))
#define GST_IS_AVI_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
#define GST_IS_AVI_DEMUX_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX))
#define GST_AVI_DEMUX_MAX_STREAMS 16
#define CHUNKID_TO_STREAMNR(chunkid) \
((((chunkid) & 0xff) - '0') * 10 + \
(((chunkid) >> 8) & 0xff) - '0')
typedef struct
{
gint index_nr;
gint stream_nr;
guint64 ts;
guint32 flags;
guint32 offset;
gint size;
guint64 bytes_before;
guint32 frames_before;
} gst_avi_index_entry;
typedef struct
{
/* index of this streamcontext */
guint num;
/* pad, strh */
GstPad *pad;
GstCaps *caps;
gst_riff_strh *strh;
/* current position (byte, frame, time) */
guint current_frame;
guint64 current_byte;
gint current_entry;
/* delay in time (init_frames) */
guint64 delay;
/* stream length */
guint64 total_bytes;
guint32 total_frames;
guint32 skip;
} avi_stream_context;
typedef enum
{
GST_AVI_DEMUX_START,
GST_AVI_DEMUX_HEADER,
GST_AVI_DEMUX_MOVI,
} GstAviDemuxState;
typedef struct _GstAviDemux
{
GstRiffRead parent;
/* pads */
GstPad *sinkpad;
/* AVI decoding state */
GstAviDemuxState state;
guint level_up;
/* index */
gst_avi_index_entry *index_entries;
guint index_size;
guint64 index_offset;
/* streams */
guint num_streams;
guint num_v_streams;
guint num_a_streams;
avi_stream_context stream[GST_AVI_DEMUX_MAX_STREAMS];
/* some stream info for length */
guint32 us_per_frame;
guint32 num_frames;
/* seeking */
guint64 seek_offset;
guint64 last_seek;
/* info */
GstCaps *streaminfo;
} GstAviDemux;
typedef struct _GstAviDemuxClass
{
GstRiffReadClass parent_class;
} GstAviDemuxClass;
GType gst_avi_demux_get_type (void);
G_END_DECLS
#endif /* __GST_AVI_DEMUX_H__ */
|
