gst/gstquery.h

   1 /* GStreamer
   2  * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
   3  *                    2000 Wim Taymans <wim.taymans@chello.be>
   4  *
   5  * gstpad.h: Header for GstPad object
   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
  24 #ifndef __GST_QUERY_H__
  25 #define __GST_QUERY_H__
  26
  27 #include <gst/gstconfig.h>
  28
  29 G_BEGIN_DECLS
  30
  31 typedef enum {
  32   GST_QUERY_NONE = 0,
  33   GST_QUERY_TOTAL,
  34   GST_QUERY_POSITION,
  35   GST_QUERY_LATENCY,
  36   GST_QUERY_JITTER,
  37   GST_QUERY_START,
  38   GST_QUERY_SEGMENT_END,
  39   GST_QUERY_RATE
  40 } GstQueryType;
  41
  42 #ifdef G_HAVE_ISO_VARARGS
  43 #define GST_QUERY_TYPE_FUNCTION(type, functionname, ...)        \
  44 static const GstQueryType*                              \
  45 functionname (type object)                              \
  46 {                                                       \
  47   static const GstQueryType types[] = {                 \
  48     __VA_ARGS__,                                        \
  49     0                                                   \
  50   };                                                    \
  51   return types;                                         \
  52 }
  53 #elif defined(G_HAVE_GNUC_VARARGS)
  54 #define GST_QUERY_TYPE_FUNCTION(type, functionname, a...)       \
  55 static const GstQueryType*                              \
  56 functionname (type object)                              \
  57 {                                                       \
  58   static const GstQueryType types[] = {                 \
  59     a,                                                  \
  60     0                                                   \
  61   };                                                    \
  62   return types;                                         \
  63 }
  64 #endif
  65
  66 G_END_DECLS
  67
  68 #endif /* __GST_QUERY_H__ */
  69