libs/gst/bytestream/bytestream.h

   1 /* GStreamer
   2  * Copyright (C) 2001 Erik Walthinsen <omega@temple-baptist.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __GST_BYTESTREAM_H__
  21 #define __GST_BYTESTREAM_H__
  22
  23 #include <glib.h>
  24 #include <gst/gstpad.h>
  25 #include <gst/gstevent.h>
  26
  27 G_BEGIN_DECLS
  28
  29 typedef struct _GstByteStream GstByteStream;
  30
  31 struct _GstByteStream {
  32   GstPad        *pad;
  33
  34   GstEvent      *event;
  35
  36   GSList        *buflist;
  37   guint32        headbufavail;
  38   guint32        listavail;
  39
  40   /* we keep state of assembled pieces */
  41   guint8        *assembled;
  42   guint32        assembled_len; /* only valid when assembled != NULL */
  43
  44   /* this is needed for gst_bytestream_tell */
  45   guint64        offset;
  46   guint64        last_ts;
  47
  48   /* if we are in the seek state (waiting for DISCONT) */
  49   gboolean       in_seek;
  50
  51   gpointer _gst_reserved[GST_PADDING];
  52 };
  53
  54 GstByteStream*          gst_bytestream_new              (GstPad *pad);
  55 void                    gst_bytestream_destroy          (GstByteStream *bs);
  56
  57 void                    gst_bytestream_reset            (GstByteStream *bs);
  58 guint32                 gst_bytestream_read             (GstByteStream *bs, GstBuffer** buf, guint32 len);
  59 guint64                 gst_bytestream_tell             (GstByteStream *bs);
  60 guint64                 gst_bytestream_length           (GstByteStream *bs);
  61 gboolean                gst_bytestream_size_hint        (GstByteStream *bs, guint32 size);
  62 gboolean                gst_bytestream_seek             (GstByteStream *bs, gint64 offset, GstSeekType method);
  63
  64 guint32                 gst_bytestream_peek             (GstByteStream *bs, GstBuffer** buf, guint32 len);
  65 guint32                 gst_bytestream_peek_bytes       (GstByteStream *bs, guint8** data, guint32 len);
  66 gboolean                gst_bytestream_flush            (GstByteStream *bs, guint32 len);
  67 void                    gst_bytestream_flush_fast       (GstByteStream *bs, guint32 len);
  68 void                    gst_bytestream_get_status       (GstByteStream *bs, guint32 *avail_out, GstEvent **event_out);
  69 guint64                 gst_bytestream_get_timestamp    (GstByteStream *bs);
  70
  71 void                    gst_bytestream_print_status     (GstByteStream *bs);
  72
  73 G_END_DECLS
  74
  75 #endif /* __GST_BYTESTREAM_H__ */