1 /* GStreamer Matroska muxer/demuxer
2 * (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * matroska-demux.h: matroska file/stream demuxer definition
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 #ifndef __GST_MATROSKA_DEMUX_H__
23 #define __GST_MATROSKA_DEMUX_H__
26 #include <gst/base/gstadapter.h>
28 #include "ebml-read.h"
29 #include "matroska-ids.h"
33 #define GST_TYPE_MATROSKA_DEMUX \
34 (gst_matroska_demux_get_type ())
35 #define GST_MATROSKA_DEMUX(obj) \
36 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemux))
37 #define GST_MATROSKA_DEMUX_CLASS(klass) \
38 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemuxClass))
39 #define GST_IS_MATROSKA_DEMUX(obj) \
40 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MATROSKA_DEMUX))
41 #define GST_IS_MATROSKA_DEMUX_CLASS(klass) \
42 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MATROSKA_DEMUX))
45 GST_MATROSKA_DEMUX_STATE_START,
46 GST_MATROSKA_DEMUX_STATE_SEGMENT,
47 GST_MATROSKA_DEMUX_STATE_HEADER,
48 GST_MATROSKA_DEMUX_STATE_DATA,
49 GST_MATROSKA_DEMUX_STATE_SEEK,
50 GST_MATROSKA_DEMUX_STATE_SCANNING
51 } GstMatroskaDemuxState;
53 #define MKVDEMUX_MODIFICATION
55 typedef struct _GstMatroskaDemux {
60 GstIndex *element_index;
61 gint element_index_writer_id;
79 GstMatroskaDemuxState state;
84 /* did we parse cues/tracks/segmentinfo already? */
85 gboolean index_parsed;
86 gboolean tracks_parsed;
87 gboolean segmentinfo_parsed;
88 gboolean attachments_parsed;
92 /* start-of-segment */
93 guint64 ebml_segment_start;
95 /* a cue (index) table */
97 /* cluster positions (optional) */
100 /* timescale in the file */
103 /* keeping track of playback position */
105 gboolean segment_running;
106 GstClockTime last_stop_end;
109 GstEvent *close_segment;
110 GstEvent *new_segment;
111 GstTagList *global_tags;
113 /* pull mode caching */
114 GstBuffer *cached_buffer;
116 /* push and pull mode */
118 /* some state saving */
119 GstClockTime cluster_time;
120 guint64 cluster_offset;
121 guint64 first_cluster_offset;
122 guint64 next_cluster_offset;
124 #ifdef MKVDEMUX_MODIFICATION
125 GstClockTime time_position;
126 GstMatroskaTrackContext* audio_stream;
128 gboolean found_videokeyframe;
129 gboolean found_audioframe;
132 /* push based mode usual suspects */
136 gboolean building_index;
137 guint64 index_offset;
138 GstEvent *seek_event;
139 gboolean need_newsegment;
141 /* reverse playback */
145 #ifdef MKVDEMUX_MODIFICATION
147 GstClockTime next_key_cluster_time;
148 guint64 next_key_frame_offset;
153 typedef struct _GstMatroskaDemuxClass {
154 GstElementClass parent;
155 } GstMatroskaDemuxClass;
157 gboolean gst_matroska_demux_plugin_init (GstPlugin *plugin);
161 #endif /* __GST_MATROSKA_DEMUX_H__ */