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108 lines
4.4 KiB
C
108 lines
4.4 KiB
C
/* GStreamer
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* Copyright (C) 2003 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_STRUCTURE_H__
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#define __GST_STRUCTURE_H__
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#include <gst/gstconfig.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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#define GST_TYPE_STRUCTURE (gst_structure_get_type ())
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#define GST_STRUCTURE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GST_TYPE_STRUCTURE, GstStructure))
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#define GST_IS_STRUCTURE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GST_TYPE_STRUCTURE))
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typedef struct _GstStructure GstStructure;
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typedef gboolean (*GstStructureForeachFunc) (GQuark field_id,
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GValue * value, gpointer user_data);
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struct _GstStructure
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{
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GType type;
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GQuark name;
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GArray *fields;
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};
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GType
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gst_structure_get_type (void)
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G_GNUC_CONST;
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GstStructure *gst_structure_empty_new (const gchar * name);
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GstStructure *gst_structure_id_empty_new (GQuark quark);
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GstStructure *gst_structure_new (const gchar * name,
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const gchar * firstfield, ...);
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GstStructure *gst_structure_new_valist (const gchar * name,
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const gchar * firstfield, va_list varargs);
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GstStructure *gst_structure_copy (const GstStructure * structure);
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void gst_structure_free (GstStructure * structure);
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G_CONST_RETURN gchar *gst_structure_get_name (const GstStructure *
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structure);
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void gst_structure_set_name (GstStructure * structure, const gchar * name);
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void gst_structure_id_set_value (GstStructure * structure,
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GQuark field, const GValue * value);
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void gst_structure_set_value (GstStructure * structure,
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const gchar * fieldname, const GValue * value);
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void gst_structure_set (GstStructure * structure,
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const gchar * fieldname, ...);
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void gst_structure_set_valist (GstStructure * structure,
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const gchar * fieldname, va_list varargs);
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G_CONST_RETURN GValue *gst_structure_id_get_value (const GstStructure *
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structure, GQuark field);
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G_CONST_RETURN GValue *gst_structure_get_value (const GstStructure *
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structure, const gchar * fieldname);
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void gst_structure_remove_field (GstStructure * structure,
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const gchar * fieldname);
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void gst_structure_remove_fields (GstStructure * structure,
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const gchar * fieldname, ...);
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void gst_structure_remove_fields_valist (GstStructure * structure,
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const gchar * fieldname, va_list varargs);
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void gst_structure_remove_all_fields (GstStructure * structure);
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GType gst_structure_get_field_type (const GstStructure * structure,
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const gchar * fieldname);
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gboolean gst_structure_foreach (GstStructure * structure,
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GstStructureForeachFunc func, gpointer user_data);
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gint gst_structure_n_fields (const GstStructure * structure);
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gboolean gst_structure_has_field (const GstStructure * structure,
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const gchar * fieldname);
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gboolean gst_structure_has_field_typed (const GstStructure * structure,
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const gchar * fieldname, GType type);
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/* utility functions */
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gboolean gst_structure_get_boolean (const GstStructure * structure,
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const gchar * fieldname, gboolean * value);
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gboolean gst_structure_get_int (const GstStructure * structure,
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const gchar * fieldname, gint * value);
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gboolean gst_structure_get_fourcc (const GstStructure * structure,
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const gchar * fieldname, guint32 * value);
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gboolean gst_structure_get_double (const GstStructure * structure,
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const gchar * fieldname, gdouble * value);
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G_CONST_RETURN gchar *gst_structure_get_string (const GstStructure *
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structure, const gchar * fieldname);
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gchar *gst_structure_to_string (const GstStructure * structure);
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GstStructure *gst_structure_from_string (const gchar * string,
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gchar ** end);
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G_END_DECLS
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#endif
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