2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
21 #ifndef __GST_AVI_DEMUX_H__
22 #define __GST_AVI_DEMUX_H__
27 #include "gst/riff/riff-ids.h"
28 #include "gst/riff/riff-read.h"
29 #include <gst/base/gstadapter.h>
33 #define GST_TYPE_AVI_DEMUX \
34 (gst_avi_demux_get_type ())
35 #define GST_AVI_DEMUX(obj) \
36 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux))
37 #define GST_AVI_DEMUX_CLASS(klass) \
38 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemuxClass))
39 #define GST_IS_AVI_DEMUX(obj) \
40 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
41 #define GST_IS_AVI_DEMUX_CLASS(klass) \
42 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX))
44 #define GST_AVI_DEMUX_MAX_STREAMS 16
46 #define CHUNKID_TO_STREAMNR(chunkid) \
47 ((((chunkid) & 0xff) - '0') * 10 + \
48 (((chunkid) >> 8) & 0xff) - '0')
51 /* new index entries 24 bytes */
54 guint32 size; /* bytes of the data */
55 guint64 offset; /* data offset in file */
56 guint64 total; /* total bytes before */
60 /* index of this streamcontext */
67 /* stream info and headers */
70 gst_riff_strf_vids *vids;
71 gst_riff_strf_auds *auds;
72 gst_riff_strf_iavs *iavs;
75 GstBuffer *extradata, *initdata;
78 /* the start/step/stop entries */
83 /* current index entry */
85 /* position (byte, frame, time) for current_entry */
87 GstClockTime current_timestamp;
88 GstClockTime current_ts_end;
89 guint64 current_offset;
90 guint64 current_offset_end;
92 GstFlowReturn last_flow;
99 /* stream length according to index */
100 GstClockTime idx_duration;
101 /* stream length according to header */
102 GstClockTime hdr_duration;
103 /* stream length based on header/index */
104 GstClockTime duration;
109 /* openDML support (for files >4GB) */
114 GstAviIndexEntry *index; /* array with index entries */
115 guint idx_n; /* number of entries */
116 guint idx_max; /* max allocated size of entries */
125 GST_AVI_DEMUX_HEADER,
131 GST_AVI_DEMUX_HEADER_TAG_LIST,
132 GST_AVI_DEMUX_HEADER_AVIH,
133 GST_AVI_DEMUX_HEADER_ELEMENTS,
134 GST_AVI_DEMUX_HEADER_INFO,
135 GST_AVI_DEMUX_HEADER_JUNK,
136 GST_AVI_DEMUX_HEADER_DATA
137 } GstAviDemuxHeaderState;
139 typedef struct _GstAviDemux {
145 /* AVI decoding state */
146 GstAviDemuxState state;
147 GstAviDemuxHeaderState header_state;
149 gboolean abort_buffering;
151 /* when we loaded the indexes */
153 /* index offset in the file */
154 guint64 index_offset;
157 GstAviStream stream[GST_AVI_DEMUX_MAX_STREAMS];
161 guint num_t_streams; /* subtitle text streams */
163 guint main_stream; /* used for seeking */
165 /* for streaming mode */
171 /* some stream info for length */
173 GstClockTime duration;
175 /* segment in TIME */
178 /* pending tags/events */
180 GstTagList *globaltags;
183 /* gst index support */
184 GstIndex *element_index;
188 guint64 first_movi_offset;
189 guint64 idx1_offset; /* offset in file of list/chunk after movi */
190 GstEvent *seek_event;
192 gboolean building_index;
195 guint64 *odml_subidxs;
197 guint64 seek_kf_offset; /* offset of the keyframe to which we want to seek */
200 typedef struct _GstAviDemuxClass {
201 GstElementClass parent_class;
204 GType gst_avi_demux_get_type (void);
208 #endif /* __GST_AVI_DEMUX_H__ */