2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
4 * gstoggdemux.c: ogg stream demuxer
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_OGG_DEMUX_H__
23 #define __GST_OGG_DEMUX_H__
31 #define GST_TYPE_OGG_PAD (gst_ogg_pad_get_type())
32 #define GST_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_PAD, GstOggPad))
33 #define GST_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_PAD, GstOggPad))
34 #define GST_IS_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_PAD))
35 #define GST_IS_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_PAD))
37 typedef struct _GstOggPad GstOggPad;
38 typedef struct _GstOggPadClass GstOggPadClass;
40 #define GST_TYPE_OGG_DEMUX (gst_ogg_demux_get_type())
41 #define GST_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_DEMUX, GstOggDemux))
42 #define GST_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_DEMUX, GstOggDemux))
43 #define GST_IS_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_DEMUX))
44 #define GST_IS_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_DEMUX))
46 static GType gst_ogg_demux_get_type (void);
48 typedef struct _GstOggDemux GstOggDemux;
49 typedef struct _GstOggDemuxClass GstOggDemuxClass;
50 typedef struct _GstOggChain GstOggChain;
52 /* all information needed for one ogg chain (relevant for chained bitstreams) */
57 gint64 offset; /* starting offset of chain */
58 gint64 end_offset; /* end offset of chain */
59 gint64 bytes; /* number of bytes */
65 GstClockTime total_time; /* the total time of this chain, this is the MAX of
66 the totals of all streams */
67 GstClockTime begin_time; /* when this chain starts in the stream */
69 GstClockTime segment_start; /* the timestamp of the first sample, this is the MIN of
70 the start times of all streams. */
71 GstClockTime segment_stop; /* the timestamp of the last page, this is the MAX of the
75 /* different modes for the pad */
78 GST_OGG_PAD_MODE_INIT, /* we are feeding our internal decoder to get info */
79 GST_OGG_PAD_MODE_STREAMING, /* we are streaming buffers to the outside */
82 /* all information needed for one ogg stream */
85 GstPad pad; /* subclass GstPad */
90 GstPad *elem_pad; /* sinkpad of internal element */
91 GstElement *element; /* internal element */
92 GstPad *elem_out; /* our sinkpad to receive buffers form the internal element */
94 GstOggChain *chain; /* the chain we are part of */
95 GstOggDemux *ogg; /* the ogg demuxer we are part of */
100 gboolean have_fisbone;
101 gint64 granulerate_n;
102 gint64 granulerate_d;
108 gint64 current_granule;
110 GstClockTime start_time; /* the timestamp of the first sample */
112 gint64 first_granule; /* the granulepos of first page == first sample in next page */
113 GstClockTime first_time; /* the timestamp of the second page or granuletime of first page */
115 ogg_stream_state stream;
119 GstFlowReturn last_ret; /* last return of _pad_push() */
121 gboolean dynamic; /* True if the internal element had dynamic pads */
122 guint padaddedid; /* The signal id for element::pad-added */
125 struct _GstOggPadClass
127 GstPadClass parent_class;
130 #define GST_CHAIN_LOCK(ogg) g_mutex_lock((ogg)->chain_lock)
131 #define GST_CHAIN_UNLOCK(ogg) g_mutex_unlock((ogg)->chain_lock)
145 gboolean need_chains;
148 GMutex *chain_lock; /* we need the lock to protect the chains */
149 GArray *chains; /* list of chains we know */
150 GstClockTime total_time;
151 GstFlowReturn chain_error; /* error we received while finding chains */
153 GstOggChain *current_chain;
154 GstOggChain *building_chain;
156 /* playback start/stop positions */
158 gboolean segment_running;
161 GstEvent *newsegment; /* pending newsegment to be sent from _loop */
163 gint64 current_granule;
166 gboolean have_fishead;
173 struct _GstOggDemuxClass
175 GstElementClass parent_class;
180 #endif /* __GST_OGG_DEMUX_H__ */