gst/matroska/matroska-demux.h

   1 /* GStreamer Matroska muxer/demuxer
   2  * (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
   3  *
   4  * matroska-demux.h: matroska file/stream demuxer definition
   5  *
   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.
  10  *
  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.
  15  *
  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.
  20  */
  21
  22 #ifndef __GST_MATROSKA_DEMUX_H__
  23 #define __GST_MATROSKA_DEMUX_H__
  24
  25 #include <gst/gst.h>
  26 #include <gst/base/gstadapter.h>
  27
  28 #include "ebml-read.h"
  29 #include "matroska-ids.h"
  30
  31 G_BEGIN_DECLS
  32
  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))
  43
  44 typedef enum {
  45   GST_MATROSKA_DEMUX_STATE_START,
  46   GST_MATROSKA_DEMUX_STATE_HEADER,
  47   GST_MATROSKA_DEMUX_STATE_DATA,
  48   GST_MATROSKA_DEMUX_STATE_SEEK
  49 } GstMatroskaDemuxState;
  50
  51 typedef struct _GstMatroskaDemux {
  52   GstEbmlRead              parent;
  53
  54   /* < private > */
  55
  56   GstIndex                *element_index;
  57   gint                     element_index_writer_id;
  58
  59   /* pads */
  60   GstPad                  *sinkpad;
  61   GPtrArray               *src;
  62   GstClock                *clock;
  63   guint                    num_streams;
  64   guint                    num_v_streams;
  65   guint                    num_a_streams;
  66   guint                    num_t_streams;
  67
  68   /* metadata */
  69   gchar                   *muxing_app;
  70   gchar                   *writing_app;
  71   gint64                   created;
  72
  73   /* state */
  74   gboolean                 streaming;
  75   GstMatroskaDemuxState    state;
  76   guint                    level_up;
  77   guint64                  seek_block;
  78
  79   /* did we parse cues/tracks/segmentinfo already? */
  80   gboolean                 index_parsed;
  81   gboolean                 tracks_parsed;
  82   gboolean                 segmentinfo_parsed;
  83   gboolean                 attachments_parsed;
  84   GList                   *tags_parsed;
  85
  86   /* start-of-segment */
  87   guint64                  ebml_segment_start;
  88
  89   /* a cue (index) table */
  90   GArray                  *index;
  91
  92   /* timescale in the file */
  93   guint64                  time_scale;
  94
  95   /* keeping track of playback position */
  96   GstSegment               segment;
  97   gboolean                 segment_running;
  98   GstClockTime             last_stop_end;
  99
 100   GstEvent                *close_segment;
 101   GstEvent                *new_segment;
 102   GstTagList              *global_tags;
 103
 104   /* push based mode usual suspects */
 105   guint64                  offset;
 106   GstAdapter              *adapter;
 107   /* some state saving */
 108   GstClockTime             cluster_time;
 109   guint64                  cluster_offset;
 110   /* index stuff */
 111   gboolean                 seekable;
 112   gboolean                 building_index;
 113   guint64                  index_offset;
 114   GstEvent                *seek_event;
 115   gboolean                 need_newsegment;
 116
 117   /* reverse playback */
 118   GArray                  *seek_index;
 119   gint                     seek_entry;
 120   gint64                   from_offset;
 121   gint64                   to_offset;
 122 } GstMatroskaDemux;
 123
 124 typedef struct _GstMatroskaDemuxClass {
 125   GstEbmlReadClass parent;
 126 } GstMatroskaDemuxClass;
 127
 128 gboolean gst_matroska_demux_plugin_init (GstPlugin *plugin);
 129
 130 G_END_DECLS
 131
 132 #endif /* __GST_MATROSKA_DEMUX_H__ */