gstreamer/gst/gstprops.h

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstprops.h: Header for properties subsystem
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_PROPS_H__
#define __GST_PROPS_H__
#include <gst/gstconfig.h>
#include <glib.h>
typedef struct _GstProps GstProps;
typedef enum {
GST_PROPS_END_ID = 0,
GST_PROPS_LIST_ID,
GST_PROPS_INT_ID,
GST_PROPS_INT_RANGE_ID,
GST_PROPS_FLOAT_ID,
GST_PROPS_FLOAT_RANGE_ID,
GST_PROPS_FOURCC_ID,
GST_PROPS_BOOL_ID,
GST_PROPS_STRING_ID,
GST_PROPS_LAST_ID = GST_PROPS_END_ID + 16,
} GstPropsId;
#define GST_MAKE_FOURCC(a,b,c,d) ((a)|(b)<<8|(c)<<16|(d)<<24)
#define GST_STR_FOURCC(f) (((f)[0])|((f)[1]<<8)|((f)[2]<<16)|((f)[3]<<24))
#define GST_PROPS_LIST(a...) GST_PROPS_LIST_ID,##a,NULL
#define GST_PROPS_INT(a) GST_PROPS_INT_ID,(a)
#define GST_PROPS_INT_RANGE(a,b) GST_PROPS_INT_RANGE_ID,(a),(b)
#define GST_PROPS_FLOAT(a) GST_PROPS_FLOAT_ID,(a)
#define GST_PROPS_FLOAT_RANGE(a,b) GST_PROPS_FLOAT_RANGE_ID,(a),(b)
#define GST_PROPS_FOURCC(a) GST_PROPS_FOURCC_ID,(a)
#define GST_PROPS_BOOLEAN(a) GST_PROPS_BOOL_ID,(a)
#define GST_PROPS_STRING(a) GST_PROPS_STRING_ID,(a)
struct _GstProps {
gint refcount;
GMutex *lock;
GList *properties; /* real properties for this property */
};
/* initialize the subsystem */
void _gst_props_initialize (void);
GstProps* gst_props_new (const gchar *firstname, ...);
GstProps* gst_props_newv (const gchar *firstname, va_list var_args);
void gst_props_unref (GstProps *props);
void gst_props_ref (GstProps *props);
void gst_props_destroy (GstProps *props);
GstProps* gst_props_copy (GstProps *props);
GstProps* gst_props_copy_on_write (GstProps *props);
GstProps* gst_props_merge (GstProps *props, GstProps *tomerge);
gboolean gst_props_check_compatibility (GstProps *fromprops, GstProps *toprops);
GstProps* gst_props_set (GstProps *props, const gchar *name, ...);
gint gst_props_get_int (GstProps *props, const gchar *name);
gfloat gst_props_get_float (GstProps *props, const gchar *name);
gulong gst_props_get_fourcc_int (GstProps *props, const gchar *name);
gboolean gst_props_get_boolean (GstProps *props, const gchar *name);
const gchar* gst_props_get_string (GstProps *props, const gchar *name);
#ifndef GST_DISABLE_LOADSAVE
xmlNodePtr gst_props_save_thyself (GstProps *props, xmlNodePtr parent);
GstProps* gst_props_load_thyself (xmlNodePtr parent);
#endif
#endif /* __GST_PROPS_H__ */