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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AVI_DEMUX_H__
#define __GST_AVI_DEMUX_H__
#include <gst/gst.h>
#include "avi-ids.h"
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-read.h"
#include <gst/base/gstadapter.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, GstAviDemuxClass))
#define GST_IS_AVI_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
#define GST_IS_AVI_DEMUX_CLASS(klass) \
(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')
/* new index entries 24 bytes */
typedef struct {
guint32 flags;
guint32 size; /* bytes of the data */
guint64 offset; /* data offset in file */
guint64 total; /* total bytes before */
} GstAviIndexEntry;
typedef struct {
/* index of this streamcontext */
guint num;
/* pad*/
GstPad *pad;
gboolean exposed;
/* stream info and headers */
gst_riff_strh *strh;
union {
gst_riff_strf_vids *vids;
gst_riff_strf_auds *auds;
gst_riff_strf_iavs *iavs;
gpointer data;
} strf;
GstBuffer *extradata, *initdata;
GstBuffer *rgb8_palette;
gchar *name;
/* the start/step/stop entries */
guint start_entry;
guint step_entry;
guint stop_entry;
/* current index entry */
guint current_entry;
/* position (byte, frame, time) for current_entry */
guint current_total;
GstClockTime current_timestamp;
GstClockTime current_ts_end;
guint64 current_offset;
guint64 current_offset_end;
GstFlowReturn last_flow;
gboolean discont;
/* stream length */
guint64 total_bytes;
guint32 total_blocks;
guint n_keyframes;
/* stream length according to index */
GstClockTime idx_duration;
/* stream length according to header */
GstClockTime hdr_duration;
/* stream length based on header/index */
GstClockTime duration;
/* VBR indicator */
gboolean is_vbr;
/* openDML support (for files >4GB) */
gboolean superindex;
guint64 *indexes;
/* new indexes */
GstAviIndexEntry *index; /* array with index entries */
guint idx_n; /* number of entries */
guint idx_max; /* max allocated size of entries */
GstTagList *taglist;
gint index_id;
} GstAviStream;
typedef enum {
GST_AVI_DEMUX_START,
GST_AVI_DEMUX_HEADER,
GST_AVI_DEMUX_MOVI,
GST_AVI_DEMUX_SEEK,
} GstAviDemuxState;
typedef enum {
GST_AVI_DEMUX_HEADER_TAG_LIST,
GST_AVI_DEMUX_HEADER_AVIH,
GST_AVI_DEMUX_HEADER_ELEMENTS,
GST_AVI_DEMUX_HEADER_INFO,
GST_AVI_DEMUX_HEADER_JUNK,
GST_AVI_DEMUX_HEADER_DATA
} GstAviDemuxHeaderState;
typedef struct _GstAviDemux {
GstElement parent;
/* pads */
GstPad *sinkpad;
/* AVI decoding state */
GstAviDemuxState state;
GstAviDemuxHeaderState header_state;
guint64 offset;
gboolean abort_buffering;
/* when we loaded the indexes */
gboolean have_index;
/* index offset in the file */
guint64 index_offset;
/* streams */
GstAviStream stream[GST_AVI_DEMUX_MAX_STREAMS];
guint num_streams;
guint num_v_streams;
guint num_a_streams;
guint num_t_streams; /* subtitle text streams */
guint num_sp_streams; /* subpicture streams */
guint main_stream; /* used for seeking */
gboolean have_group_id;
guint group_id;
/* for streaming mode */
gboolean streaming;
gboolean have_eos;
GstAdapter *adapter;
guint todrop;
/* some stream info for length */
gst_riff_avih *avih;
GstClockTime duration;
/* segment in TIME */
GstSegment segment;
/* pending tags/events */
GstEvent *seg_event;
GstTagList *globaltags;
gboolean got_tags;
#if 0
/* gst index support */
GstIndex *element_index;
gint index_id;
#endif
gboolean seekable;
guint64 first_movi_offset;
guint64 idx1_offset; /* offset in file of list/chunk after movi */
GstEvent *seek_event;
gboolean building_index;
guint odml_stream;
guint odml_subidx;
guint64 *odml_subidxs;
guint64 seek_kf_offset; /* offset of the keyframe to which we want to seek */
} GstAviDemux;
typedef struct _GstAviDemuxClass {
GstElementClass parent_class;
} GstAviDemuxClass;
GType gst_avi_demux_get_type (void);
G_END_DECLS
#endif /* __GST_AVI_DEMUX_H__ */
|
