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., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, 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>
30 #include <gst/base/gstflowcombiner.h>
34 #define GST_TYPE_AVI_DEMUX \
35 (gst_avi_demux_get_type ())
36 #define GST_AVI_DEMUX(obj) \
37 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux))
38 #define GST_AVI_DEMUX_CLASS(klass) \
39 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemuxClass))
40 #define GST_IS_AVI_DEMUX(obj) \
41 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
42 #define GST_IS_AVI_DEMUX_CLASS(klass) \
43 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX))
45 #define GST_AVI_DEMUX_MAX_STREAMS 16
47 #define CHUNKID_TO_STREAMNR(chunkid) \
48 ((((chunkid) & 0xff) - '0') * 10 + \
49 (((chunkid) >> 8) & 0xff) - '0')
52 /* new index entries 24 bytes */
55 guint32 size; /* bytes of the data */
56 guint64 offset; /* data offset in file */
57 guint64 total; /* total bytes before */
61 /* index of this streamcontext */
68 /* stream info and headers */
71 gst_riff_strf_vids *vids;
72 gst_riff_strf_auds *auds;
73 gst_riff_strf_iavs *iavs;
76 GstBuffer *extradata, *initdata;
77 GstBuffer *rgb8_palette;
80 /* the start/step/stop entries */
85 /* current index entry */
87 /* position (byte, frame, time) for current_entry */
89 GstClockTime current_timestamp;
90 GstClockTime current_ts_end;
91 guint64 current_offset;
92 guint64 current_offset_end;
100 /* stream length according to index */
101 GstClockTime idx_duration;
102 /* stream length according to header */
103 GstClockTime hdr_duration;
104 /* stream length based on header/index */
105 GstClockTime duration;
110 /* openDML support (for files >4GB) */
115 GstAviIndexEntry *index; /* array with index entries */
116 guint idx_n; /* number of entries */
117 guint idx_max; /* max allocated size of entries */
128 GST_AVI_DEMUX_HEADER,
134 GST_AVI_DEMUX_HEADER_TAG_LIST,
135 GST_AVI_DEMUX_HEADER_AVIH,
136 GST_AVI_DEMUX_HEADER_ELEMENTS,
137 GST_AVI_DEMUX_HEADER_INFO,
138 GST_AVI_DEMUX_HEADER_JUNK,
139 GST_AVI_DEMUX_HEADER_DATA
140 } GstAviDemuxHeaderState;
142 typedef struct _GstAviDemux {
148 /* AVI decoding state */
149 GstAviDemuxState state;
150 GstAviDemuxHeaderState header_state;
152 gboolean abort_buffering;
154 /* when we loaded the indexes */
156 /* index offset in the file */
157 guint64 index_offset;
160 GstAviStream stream[GST_AVI_DEMUX_MAX_STREAMS];
164 guint num_t_streams; /* subtitle text streams */
165 guint num_sp_streams; /* subpicture streams */
167 guint main_stream; /* used for seeking */
169 GstFlowCombiner *flowcombiner;
171 gboolean have_group_id;
174 /* for streaming mode */
180 /* some stream info for length */
182 GstClockTime duration;
184 /* segment in TIME */
186 guint32 segment_seqnum;
188 /* pending tags/events */
190 GstTagList *globaltags;
194 /* gst index support */
195 GstIndex *element_index;
201 guint64 first_movi_offset;
202 guint64 idx1_offset; /* offset in file of list/chunk after movi */
203 GstEvent *seek_event;
205 gboolean building_index;
208 guint64 *odml_subidxs;
210 guint64 seek_kf_offset; /* offset of the keyframe to which we want to seek */
213 typedef struct _GstAviDemuxClass {
214 GstElementClass parent_class;
217 GType gst_avi_demux_get_type (void);
221 #endif /* __GST_AVI_DEMUX_H__ */