gst/gstcaps.h

   1 /* Gnome-Streamer
   2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
   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
  21 #ifndef __GST_CAPS_H__
  22 #define __GST_CAPS_H__
  23
  24 #include <gst/gst.h>
  25
  26 typedef struct _GstCaps GstCaps;
  27 typedef gpointer GstCapsFactoryEntry;
  28 typedef GstCapsFactoryEntry GstCapsFactory[];
  29 typedef GstCapsFactory *GstCapsListFactory[];
  30
  31 typedef enum {
  32    GST_CAPS_END_ID_NUM = 0,
  33    GST_CAPS_LIST_ID_NUM,
  34    GST_CAPS_INT_ID_NUM,
  35    GST_CAPS_INT_RANGE_ID_NUM,
  36    GST_CAPS_FOURCC_ID_NUM,
  37    GST_CAPS_BOOL_ID_NUM,
  38 } GstCapsId;
  39
  40 #define GST_CAPS_LIST_ID GINT_TO_POINTER(GST_CAPS_LIST_ID_NUM)
  41 #define GST_CAPS_INT_ID GINT_TO_POINTER(GST_CAPS_INT_ID_NUM)
  42 #define GST_CAPS_INT_RANGE_ID GINT_TO_POINTER(GST_CAPS_INT_RANGE_ID_NUM)
  43 #define GST_CAPS_FOURCC_ID GINT_TO_POINTER(GST_CAPS_FOURCC_ID_NUM)
  44 #define GST_CAPS_BOOL_ID GINT_TO_POINTER(GST_CAPS_BOOL_ID_NUM)
  45
  46 #define GST_CAPS_LIST(a...) GST_CAPS_LIST_ID,##a,NULL
  47 #define GST_CAPS_INT(a) GST_CAPS_INT_ID,(GINT_TO_POINTER(a))
  48 #define GST_CAPS_INT_RANGE(a,b) GST_CAPS_INT_RANGE_ID,(GINT_TO_POINTER(a)),(GINT_TO_POINTER(b))
  49 #define GST_CAPS_FOURCC(a,b,c,d) GST_CAPS_FOURCC_ID,(GINT_TO_POINTER((a)|(b)<<8|(c)<<16|(d)<<24))
  50 #define GST_CAPS_FOURCC_INT(a) GST_CAPS_FOURCC_ID,(GINT_TO_POINTER(a))
  51 #define GST_CAPS_BOOLEAN(a) GST_CAPS_BOOL_ID,(GINT_TO_POINTER(a))
  52
  53
  54 struct _GstCaps {
  55   guint16 id;                   /* type id (major type) */
  56
  57   GSList *properties;           /* properties for this capability */
  58 };
  59
  60 /* initialize the subsystem */
  61 void            _gst_caps_initialize            (void);
  62
  63 GstCaps*        gst_caps_register               (GstCapsFactory factory);
  64 GList*          gst_caps_register_va            (GstCapsFactory factory,...);
  65
  66 void            gst_caps_dump                   (GstCaps *caps);
  67
  68 gboolean        gst_caps_check_compatibility    (GstCaps *caps1, GstCaps *caps2);
  69
  70 #endif /* __GST_CAPS_H__ */