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
  27 #include "ebml-read.h"
  28 #include "matroska-ids.h"
  29
  30 G_BEGIN_DECLS
  31
  32 #define GST_TYPE_MATROSKA_DEMUX \
  33   (gst_matroska_demux_get_type ())
  34 #define GST_MATROSKA_DEMUX(obj) \
  35   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemux))
  36 #define GST_MATROSKA_DEMUX_CLASS(klass) \
  37   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemux))
  38 #define GST_IS_MATROSKA_DEMUX(obj) \
  39   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MATROSKA_DEMUX))
  40 #define GST_IS_MATROSKA_DEMUX_CLASS(obj) \
  41   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MATROSKA_DEMUX))
  42
  43 #define GST_MATROSKA_DEMUX_MAX_STREAMS 64
  44
  45 typedef enum {
  46   GST_MATROSKA_DEMUX_STATE_START,
  47   GST_MATROSKA_DEMUX_STATE_HEADER,
  48   GST_MATROSKA_DEMUX_STATE_DATA
  49 } GstMatroskaDemuxState;
  50
  51 typedef struct _GstMatroskaDemuxIndex {
  52   guint64        pos;   /* of the corresponding *cluster*! */
  53   guint16        track; /* reference to 'num' */
  54   guint64        time;  /* in nanoseconds */
  55 } GstMatroskaDemuxIndex;
  56
  57 typedef struct _GstMatroskaDemux {
  58   GstEbmlRead              parent;
  59
  60   /* pads */
  61   GstPad                  *sinkpad;
  62   GstMatroskaTrackContext *src[GST_MATROSKA_DEMUX_MAX_STREAMS];
  63   GstClock                *clock;
  64   guint                    num_streams;
  65   guint                    num_v_streams;
  66   guint                    num_a_streams;
  67   guint                    num_t_streams;
  68
  69   /* metadata */
  70   gchar                   *muxing_app;
  71   gchar                   *writing_app;
  72   gint64                   created;
  73
  74   /* state */
  75   GstMatroskaDemuxState    state;
  76   guint                    level_up;
  77
  78   /* did we parse metadata/cues already? */
  79   gboolean                 metadata_parsed;
  80   gboolean                 index_parsed;
  81
  82   /* start-of-segment */
  83   guint64                  ebml_segment_start;
  84
  85   /* a cue (index) table */
  86   GstMatroskaIndex        *index;
  87   guint                    num_indexes;
  88
  89   /* timescale in the file */
  90   guint64                  time_scale;
  91
  92   /* length, position (time, ns) */
  93   guint64                  pos;
  94   guint64                  duration;
  95
  96   /* a possible pending seek */
  97   gboolean                 seek_pending;
  98
  99   gdouble                  segment_rate;
 100   gint64                   segment_start;
 101   gint64                   segment_stop;
 102   gboolean                 segment_play;
 103 } GstMatroskaDemux;
 104
 105 typedef struct _GstMatroskaDemuxClass {
 106   GstEbmlReadClass parent;
 107 } GstMatroskaDemuxClass;
 108
 109 gboolean gst_matroska_demux_plugin_init (GstPlugin *plugin);
 110
 111 G_END_DECLS
 112
 113 #endif /* __GST_MATROSKA_DEMUX_H__ */