gst/matroska/ebml-write.h

   1 /* GStreamer EBML I/O
   2  * (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
   3  * (c) 2005 Michal Benes <michal.benes@xeris.cz>
   4  *
   5  * ebml-write.c: write EBML data to file/stream
   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_EBML_WRITE_H__
  24 #define __GST_EBML_WRITE_H__
  25
  26 #include <glib.h>
  27 #include <gst/gst.h>
  28
  29 G_BEGIN_DECLS
  30
  31 #define GST_TYPE_EBML_WRITE \
  32   (gst_ebml_write_get_type ())
  33 #define GST_EBML_WRITE(obj) \
  34   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_EBML_WRITE, GstEbmlWrite))
  35 #define GST_EBML_WRITE_CLASS(klass) \
  36   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_EBML_WRITE, GstEbmlWriteClass))
  37 #define GST_IS_EBML_WRITE(obj) \
  38   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_EBML_WRITE))
  39 #define GST_IS_EBML_WRITE_CLASS(obj) \
  40   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_EBML_WRITE))
  41 #define GST_EBML_WRITE_GET_CLASS(obj) \
  42   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_EBML_WRITE, GstEbmlWriteClass))
  43
  44 typedef struct _GstEbmlWrite {
  45   GstObject object;
  46
  47   GstPad *srcpad;
  48   guint64 pos;
  49
  50   GstBuffer *cache;
  51   guint cache_size;
  52   guint handled;
  53
  54   GstFlowReturn last_write_result;
  55
  56   /*< private >*/
  57   gpointer _gst_reserved[GST_PADDING];
  58 } GstEbmlWrite;
  59
  60 typedef struct _GstEbmlWriteClass {
  61   GstObjectClass parent;
  62
  63   /*< private >*/
  64   gpointer _gst_reserved[GST_PADDING];
  65 } GstEbmlWriteClass;
  66
  67 GType   gst_ebml_write_get_type      (void);
  68
  69 GstEbmlWrite *gst_ebml_write_new     (GstPad *srcpad);
  70 void    gst_ebml_write_reset         (GstEbmlWrite *ebml);
  71
  72 GstFlowReturn gst_ebml_last_write_result (GstEbmlWrite *ebml);
  73
  74 /*
  75  * Caching means that we do not push one buffer for
  76  * each element, but fill this one until a flush.
  77  */
  78 void    gst_ebml_write_set_cache     (GstEbmlWrite *ebml,
  79                                       guint         size);
  80 void    gst_ebml_write_flush_cache   (GstEbmlWrite *ebml);
  81
  82 /*
  83  * Seeking.
  84  */
  85 void    gst_ebml_write_seek          (GstEbmlWrite *ebml,
  86                                       guint64       pos);
  87
  88 /*
  89  * Data writing.
  90  */
  91 void    gst_ebml_write_uint          (GstEbmlWrite *ebml,
  92                                       guint32       id,
  93                                       guint64       num);
  94 void    gst_ebml_write_sint          (GstEbmlWrite *ebml,
  95                                       guint32       id,
  96                                       gint64        num);
  97 void    gst_ebml_write_float         (GstEbmlWrite *ebml,
  98                                       guint32       id,
  99                                       gdouble       num);
 100 void    gst_ebml_write_ascii         (GstEbmlWrite *ebml,
 101                                       guint32       id,
 102                                       const gchar  *str);
 103 void    gst_ebml_write_utf8          (GstEbmlWrite *ebml,
 104                                       guint32       id,
 105                                       const gchar  *str);
 106 void    gst_ebml_write_date          (GstEbmlWrite *ebml,
 107                                       guint32       id,
 108                                       gint64        date);
 109 guint64 gst_ebml_write_master_start  (GstEbmlWrite *ebml,
 110                                       guint32       id);
 111 void    gst_ebml_write_master_finish (GstEbmlWrite *ebml,
 112                                       guint64       startpos);
 113 void    gst_ebml_write_binary        (GstEbmlWrite *ebml,
 114                                       guint32       id,
 115                                       guchar       *binary,
 116                                       guint64       length);
 117 void    gst_ebml_write_header        (GstEbmlWrite *ebml,
 118                                       gchar        *doctype,
 119                                       guint         version);
 120
 121 /*
 122  * Note: this is supposed to be used only for media data.
 123  */
 124 void    gst_ebml_write_buffer_header (GstEbmlWrite *ebml,
 125                                       guint32       id,
 126                                       guint64       length);
 127 void    gst_ebml_write_buffer        (GstEbmlWrite *ebml,
 128                                       GstBuffer    *data);
 129
 130 /*
 131  * A hack, basically... See matroska-mux.c. I should actually
 132  * make a nice _replace_element_with_size() or so, but this
 133  * works for now.
 134  */
 135 void    gst_ebml_replace_uint        (GstEbmlWrite *ebml,
 136                                       guint64       pos,
 137                                       guint64       num);
 138
 139 G_END_DECLS
 140
 141 #endif /* __GST_EBML_WRITE_H__ */