gst/matroska/matroska-demux.h

   1 /* GStreamer Matroska muxer/demuxer
   2  * (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
   3  * (c) 2011 Debarshi Ray <rishi@gnu.org>
   4  *
   5  * matroska-demux.h: matroska file/stream demuxer definition
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef __GST_MATROSKA_DEMUX_H__
  24 #define __GST_MATROSKA_DEMUX_H__
  25
  26 #include <gst/gst.h>
  27
  28 #include "ebml-read.h"
  29 #include "matroska-ids.h"
  30 #include "matroska-read-common.h"
  31
  32 G_BEGIN_DECLS
  33
  34 #define GST_TYPE_MATROSKA_DEMUX \
  35   (gst_matroska_demux_get_type ())
  36 #define GST_MATROSKA_DEMUX(obj) \
  37   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemux))
  38 #define GST_MATROSKA_DEMUX_CLASS(klass) \
  39   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MATROSKA_DEMUX, GstMatroskaDemuxClass))
  40 #define GST_IS_MATROSKA_DEMUX(obj) \
  41   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MATROSKA_DEMUX))
  42 #define GST_IS_MATROSKA_DEMUX_CLASS(klass) \
  43   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MATROSKA_DEMUX))
  44
  45 typedef struct _GstMatroskaDemux {
  46   GstElement              parent;
  47
  48   /* < private > */
  49
  50   GstMatroskaReadCommon    common;
  51
  52   /* pads */
  53   GstClock                *clock;
  54   guint                    num_v_streams;
  55   guint                    num_a_streams;
  56   guint                    num_t_streams;
  57
  58   /* state */
  59   gboolean                 streaming;
  60   guint                    level_up;
  61   guint64                  seek_block;
  62   gboolean                 seek_first;
  63
  64   /* did we parse cues/tracks/segmentinfo already? */
  65   gboolean                 tracks_parsed;
  66   GList                   *seek_parsed;
  67
  68   /* cluster positions (optional) */
  69   GArray                  *clusters;
  70
  71   /* keeping track of playback position */
  72   gboolean                 segment_running;
  73   GstClockTime             last_stop_end;
  74   GstClockTime             stream_start_time;
  75
  76   GstEvent                *close_segment;
  77   GstEvent                *new_segment;
  78
  79   /* some state saving */
  80   GstClockTime             cluster_time;
  81   guint64                  cluster_offset;
  82   guint64                  first_cluster_offset;
  83   guint64                  next_cluster_offset;
  84
  85 #ifdef MKV_DEMUX_MODIFICATION
  86   gint64                   duration; /* need to check */
  87   GstClockTime time_position;
  88   GstMatroskaTrackContext* audio_stream;
  89   gboolean video;
  90   gboolean found_videokeyframe;
  91   gboolean found_audioframe;
  92 #endif
  93
  94   /* index stuff */
  95   gboolean                 seekable;
  96   gboolean                 building_index;
  97   guint64                  index_offset;
  98   GstEvent                *seek_event;
  99   gboolean                 need_newsegment;
 100
 101   /* reverse playback */
 102   GArray                  *seek_index;
 103   gint                     seek_entry;
 104
 105 #ifdef MKV_DEMUX_MODIFICATION
 106   GstClockTime          next_key_cluster_time;
 107   guint64               next_key_frame_offset;
 108   GstClockTime          current_ts;
 109   GstClockTime          current_fwd_ts;
 110   GstClockTime          next_keyframe_ts;
 111   GstClockTime          prev_keyframe_ts;
 112   gboolean              is_eos_blockgroup;
 113   gboolean              is_eos_simpleblock;
 114   gint                  no_video_frame;
 115   gboolean              video_keyframe_pushed;
 116 #endif
 117
 118   /* gap handling */
 119   guint64                  max_gap_time;
 120
 121   /* for non-finalized files, with invalid segment duration */
 122   gboolean                 invalid_duration;
 123 } GstMatroskaDemux;
 124
 125 typedef struct _GstMatroskaDemuxClass {
 126   GstElementClass parent;
 127 } GstMatroskaDemuxClass;
 128
 129 gboolean gst_matroska_demux_plugin_init (GstPlugin *plugin);
 130
 131 G_END_DECLS
 132
 133 #endif /* __GST_MATROSKA_DEMUX_H__ */