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115 lines
4.1 KiB
C
115 lines
4.1 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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typedef struct _GstStructure GstStructure;
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typedef struct _GstStructureField GstStructureField;
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typedef void (*GstStructureForeachFunc) (GstStructure *structure,
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GQuark field_id, GValue *value, gpointer user_data);
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struct _GstStructure {
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int len;
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GQuark name;
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GArray *fields;
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};
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struct _GstStructureField {
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GQuark name;
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GValue value;
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};
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#define GST_STRUCTURE_FIELD(structure, index) \
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&g_array_index((structure)->fields, GstStructureField, (index))
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GType gst_structure_get_type(void);
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void _gst_structure_initialize(void);
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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(GstStructure *structure);
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void gst_structure_free(GstStructure *structure);
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G_CONST_RETURN gchar *gst_structure_get_name(GstStructure *structure);
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void gst_structure_set_name(GstStructure *structure, const gchar *name);
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void gst_structure_set_field_copy (GstStructure *structure,
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const GstStructureField *field);
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void gst_structure_set_field (GstStructure *structure,
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GstStructureField *field);
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void gst_structure_id_set_value(GstStructure *structure, GQuark field,
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const GValue *value);
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void gst_structure_set_value(GstStructure *structure, const gchar *field,
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const GValue *value);
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void gst_structure_set(GstStructure *structure, const gchar *field, ...);
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void gst_structure_set_valist(GstStructure *structure, const gchar *field,
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va_list varargs);
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G_CONST_RETURN GValue *gst_structure_get_value(const GstStructure *structure,
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const gchar *field);
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GstStructureField *gst_structure_get_field(const GstStructure *structure,
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const gchar *fieldname);
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GstStructureField *gst_structure_id_get_field(const GstStructure *structure,
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GQuark fieldname);
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void gst_structure_remove_field(GstStructure *structure, const gchar *field);
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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 *field);
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void gst_structure_field_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, const gchar *field);
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gboolean gst_structure_has_field_typed(const GstStructure *structure,
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const gchar *field, GType type);
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/* utility functions */
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gboolean gst_structure_get_boolean(const GstStructure *structure, const gchar *field,
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gboolean *value);
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gboolean gst_structure_get_int(const GstStructure *structure, const gchar *field,
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gint *value);
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gboolean gst_structure_get_fourcc(const GstStructure *structure, const gchar *field,
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guint32 *value);
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gboolean gst_structure_get_double(const GstStructure *structure, const gchar *field,
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gdouble *value);
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G_CONST_RETURN gchar *gst_structure_get_string(const GstStructure *structure,
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const gchar *field);
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gchar * gst_structure_to_string(const GstStructure *structure);
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GstStructure * gst_structure_from_string (const gchar *string, gchar **end);
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G_END_DECLS
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#endif
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