--- /dev/null
+/* GStreamer
+ * Copyright (C) 2003 David A. Schleef <ds@schleef.org>
+ *
+ * gststructure.c: lists of { GQuark, GValue } tuples
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+#include <gobject/gvaluecollector.h>
+
+//#define G_TYPE_FOURCC G_TYPE_FLOAT
+
+static GType _gst_structure_type;
+
+static void _gst_structure_transform_to_string(const GValue *src_value,
+ GValue *dest_value);
+
+static void _gst_structure_value_init (GValue *value);
+static void _gst_structure_value_free (GValue *value);
+static void _gst_structure_value_copy (const GValue *src, GValue *dest);
+static gpointer _gst_structure_value_peek_pointer (const GValue *value);
+
+
+GType gst_structure_get_type(void)
+{
+ return _gst_structure_type;
+}
+
+void _gst_structure_initialize(void)
+{
+ static GTypeValueTable type_value_table = {
+ _gst_structure_value_init,
+ _gst_structure_value_free,
+ _gst_structure_value_copy,
+ _gst_structure_value_peek_pointer,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ };
+ static GTypeInfo structure_info = {
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ 0, /* sizeof(GstStructure), */
+ 0,
+ NULL, /* _gst_structure_init, */
+ &type_value_table,
+ };
+
+ _gst_structure_type = g_type_register_static(G_TYPE_BOXED, "GstStructure",
+ &structure_info, 0);
+#if 0
+ _gst_structure_type = g_boxed_type_register_static("GstStructure",
+ (GBoxedCopyFunc) gst_structure_dup,
+ (GBoxedFreeFunc) gst_structure_free);
+#endif
+
+ g_value_register_transform_func(_gst_structure_type, G_TYPE_STRING,
+ _gst_structure_transform_to_string);
+}
+
+/**
+ * gst_structure_empty_new:
+ * @name: name of new structure
+ *
+ * Creates a new, empty #GstStructure with the given name.
+ *
+ * Returns: a new, empty #GstStructure
+ */
+GstStructure *gst_structure_empty_new(const gchar *name)
+{
+ GstStructure *structure;
+
+ g_return_val_if_fail(name != NULL, NULL);
+
+ structure = g_new0(GstStructure, 1);
+ structure->name = g_quark_from_string(name);
+ structure->fields = g_array_new(FALSE,TRUE,sizeof(GstStructureField));
+
+ return structure;
+}
+
+/**
+ * gst_structure_new:
+ * @name: name of new structure
+ * @firstfield: name of first field to set
+ * @...: additional arguments
+ *
+ * Creates a new #GstStructure with the given name. Parses the
+ * list of variable arguments and sets fields to the values listed.
+ * Variable arguments should be passed as field name, field type,
+ * and value. Last variable argument should be NULL.
+ *
+ * Returns: a new #GstStructure
+ */
+GstStructure *gst_structure_new(const gchar *name,
+ const gchar *firstfield, ...)
+{
+ GstStructure *structure;
+ va_list varargs;
+
+ g_return_val_if_fail(name != NULL, NULL);
+
+ va_start(varargs, firstfield);
+
+ structure = gst_structure_new_valist(name,firstfield,varargs);
+
+ va_end(varargs);
+
+ return structure;
+}
+
+/**
+ * gst_structure_new_valist:
+ * @name: name of new structure
+ * @firstfield: name of first field to set
+ * @varags: variable argument list
+ *
+ * Creates a new #GstStructure with the given name. Structure fields
+ * are set according to the varargs in a manner similar to
+ * @gst_structure_new.
+ *
+ * Returns: a new #GstStructure
+ */
+GstStructure *gst_structure_new_valist(const gchar *name,
+ const gchar *firstfield, va_list varargs)
+{
+ GstStructure *structure;
+
+ g_return_val_if_fail(name != NULL, NULL);
+
+ structure = gst_structure_empty_new(name);
+ gst_structure_set_valist(structure, firstfield, varargs);
+
+ return structure;
+}
+
+/**
+ * gst_structure_dup:
+ * @structure: a #GstStructure to duplicate
+ *
+ * Duplicates a #GstStructure and all its fields and values.
+ *
+ * Returns: a new #GstStructure.
+ */
+GstStructure *gst_structure_dup(GstStructure *structure)
+{
+ GstStructure *new_structure;
+ GstStructureField *field;
+ int i;
+
+ g_return_val_if_fail(structure != NULL, NULL);
+
+ new_structure = gst_structure_empty_new(g_quark_to_string(structure->name));
+ new_structure->fields = g_array_set_size(new_structure->fields,
+ structure->fields->len);
+ new_structure->name = structure->name;
+
+ for(i=0;i<structure->fields->len;i++){
+ GstStructureField new_field = { 0 };
+
+ field = GST_STRUCTURE_FIELD(structure, i);
+
+ new_field.name = field->name;
+ g_value_init(&new_field.value, G_VALUE_TYPE(&field->value));
+ g_value_copy(&field->value, &new_field.value);
+
+ g_array_append_val(new_structure->fields, new_field);
+ }
+
+ return structure;
+}
+
+/**
+ * gst_structure_free:
+ * @structure: the #GstStructure to free
+ *
+ * Frees a #GstStructure and all its fields and values.
+ */
+void gst_structure_free(GstStructure *structure)
+{
+ GstStructureField *field;
+ int i;
+
+ return;
+
+ g_return_if_fail(structure != NULL);
+
+ for(i=0;i<structure->fields->len;i++){
+ field = GST_STRUCTURE_FIELD(structure, i);
+
+ if(G_IS_VALUE(&field->value)){
+ g_value_unset(&field->value);
+ }
+ }
+ g_free(structure);
+}
+
+/**
+ * gst_structure_get_name:
+ * @structure: a #GstStructure
+ *
+ * Accessor fuction.
+ *
+ * Returns: the name of the structure.
+ */
+const gchar *gst_structure_get_name(GstStructure *structure)
+{
+ g_return_val_if_fail(structure != NULL, NULL);
+
+ return g_quark_to_string(structure->name);
+}
+
+/**
+ * gst_structure_set_name:
+ * @structure: a #GstStructure
+ * @name: the new name of the structure
+ *
+ * Sets the name of the structure to the given name. The string
+ * provided is copied before being used.
+ */
+void gst_structure_set_name(GstStructure *structure, const gchar *name)
+{
+ g_return_if_fail(structure != NULL);
+ g_return_if_fail(name != NULL);
+
+ structure->name = g_quark_from_string(name);
+}
+
+/**
+ * gst_structure_id_set_value:
+ * @structure: a #GstStructure
+ * @field_id: a #GQuark representing a field
+ * @value: the new value of the field
+ *
+ * Sets the field with the given ID to the provided value. If the field
+ * does not exist, it is created. If the field exists, the previous
+ * value is freed.
+ */
+void gst_structure_id_set_value(GstStructure *structure, GQuark fieldname,
+ GValue *value)
+{
+ GstStructureField field = { 0 };
+
+ g_return_if_fail(structure != NULL);
+ g_return_if_fail(G_IS_VALUE(value));
+
+ field.name = fieldname;
+ g_value_init(&field.value, G_TYPE_INT);
+ g_value_copy(value, &field.value);
+
+ gst_structure_set_field(structure, &field);
+}
+
+/**
+ * gst_structure_set_value:
+ * @structure: a #GstStructure
+ * @field: the name of the field to set
+ * @value: the new value of the field
+ *
+ * Sets the field with the given name to the provided value. If the field
+ * does not exist, it is created. If the field exists, the previous
+ * value is freed.
+ */
+void gst_structure_set_value(GstStructure *structure, const gchar *field,
+ GValue *value)
+{
+ g_return_if_fail(structure != NULL);
+ g_return_if_fail(field != NULL);
+ g_return_if_fail(G_IS_VALUE(value));
+
+ gst_structure_id_set_value(structure, g_quark_from_string(field), value);
+}
+
+/**
+ * gst_structure_set:
+ * @structure: a #GstStructure
+ * @field: the name of the field to set
+ * @...: variable arguments
+ *
+ * Parses the variable arguments and sets fields accordingly.
+ * Variable arguments should be in the form field name, field type
+ * (as a GType), value. The last variable argument should be NULL.
+ */
+void gst_structure_set(GstStructure *structure, const gchar *field, ...)
+{
+ va_list varargs;
+
+ g_return_if_fail(structure != NULL);
+
+ va_start(varargs, field);
+
+ gst_structure_set_valist(structure,field,varargs);
+
+ va_end(varargs);
+}
+
+/**
+ * gst_structure_set:
+ * @structure: a #GstStructure
+ * @field: the name of the field to set
+ * @varargs: variable arguments
+ *
+ * va_list form of #gst_structure_set.
+ */
+void gst_structure_set_valist(GstStructure *structure, const gchar *fieldname,
+ va_list varargs)
+{
+ GType type;
+ int i;
+ double d;
+ char *s;
+
+ g_return_if_fail(structure != NULL);
+
+ while(fieldname){
+ GstStructureField field = { 0 };
+
+ field.name = g_quark_from_string(fieldname);
+
+ type = va_arg (varargs, GType);
+
+ switch(type){
+ case G_TYPE_INT:
+ i = va_arg(varargs, int);
+ g_value_init(&field.value, G_TYPE_INT);
+ g_value_set_int(&field.value, i);
+ break;
+ case G_TYPE_DOUBLE:
+ d = va_arg(varargs, double);
+ g_value_init(&field.value, G_TYPE_DOUBLE);
+ g_value_set_double(&field.value, d);
+ break;
+#if 0
+ case GST_TYPE_FOURCC:
+ i = va_arg(varargs, int);
+ g_value_init(&field.value, G_TYPE_FOURCC);
+ gst_value_set_fourcc(&field.value, i);
+ break;
+#endif
+ case G_TYPE_BOOLEAN:
+ i = va_arg(varargs, int);
+ g_value_init(&field.value, G_TYPE_BOOLEAN);
+ g_value_set_boolean(&field.value, i);
+ break;
+ case G_TYPE_STRING:
+ s = va_arg(varargs, char *);
+ g_value_init(&field.value, G_TYPE_STRING);
+ g_value_set_string(&field.value, s);
+ break;
+ default:
+ g_assert_not_reached();
+ break;
+ }
+
+ gst_structure_set_field(structure, &field);
+
+ fieldname = va_arg (varargs, gchar *);
+ }
+}
+
+/**
+ * gst_structure_set_field:
+ * @structure: a #GstStructure
+ * @field: the #GstStructureField to set
+ *
+ * Sets a field in the structure. If the structure currently contains
+ * a field with the same name, it is replaced with the provided field.
+ * Otherwise, the field is added to the structure. The field's value
+ * is not deeply copied.
+ *
+ * This function is intended mainly for internal use. The function
+ * #gst_structure_set() is recommended instead of this one.
+ */
+void gst_structure_set_field(GstStructure *structure, GstStructureField *field)
+{
+ GstStructureField *f;
+ int i;
+
+ for(i=0;i<structure->fields->len;i++){
+ f = GST_STRUCTURE_FIELD(structure, i);
+
+ if(f->name == field->name){
+ g_value_unset(&f->value);
+ memcpy(f,field,sizeof(GstStructureField));
+ return;
+ }
+ }
+
+ g_array_append_val(structure->fields, *field);
+}
+
+/**
+ * gst_structure_id_get_field:
+ * @structure: a #GstStructure
+ * @field_id: the GQuark of the field to get
+ *
+ * Gets the specified field from the structure. If there is no
+ * field with the given ID, NULL is returned.
+ *
+ * Returns: the #GstStructureField with the given ID
+ */
+GstStructureField *gst_structure_id_get_field(GstStructure *structure,
+ GQuark field_id)
+{
+ GstStructureField *field;
+ int i;
+
+ g_return_val_if_fail(structure != NULL, NULL);
+
+ for(i=0;i<structure->fields->len;i++){
+ field = GST_STRUCTURE_FIELD(structure, i);
+
+ if(field->name == field_id) return field;
+ }
+
+ return NULL;
+}
+
+/**
+ * gst_structure_get_field:
+ * @structure: a #GstStructure
+ * @fieldname: the name of the field to get
+ *
+ * Gets the specified field from the structure. If there is no
+ * field with the given ID, NULL is returned.
+ *
+ * Returns: the #GstStructureField with the given name
+ */
+GstStructureField *
+gst_structure_get_field(GstStructure *structure, const gchar *fieldname)
+{
+ g_return_val_if_fail(structure != NULL, NULL);
+ g_return_val_if_fail(fieldname != NULL, NULL);
+
+ return gst_structure_id_get_field(structure,
+ g_quark_from_string(fieldname));
+}
+
+/**
+ * gst_structure_get:
+ * @structure: a #GstStructure
+ * @fieldname: the name of the field to get
+ *
+ * Accessor function.
+ *
+ * Returns: the #GValue corresponding to the field with the given name.
+ */
+const GValue *
+gst_structure_get(GstStructure *structure, const gchar *fieldname)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, NULL);
+ g_return_val_if_fail(fieldname != NULL, NULL);
+
+ field = gst_structure_get_field(structure, fieldname);
+ if(field == NULL) return NULL;
+
+ return &field->value;
+}
+
+/**
+ * gst_structure_remove_field:
+ * @structure: a #GstStructure
+ * @fieldname: the name of the field to remove
+ *
+ * Removes the field with the given name. If the field with the given
+ * name does not exist, the structure is unchanged.
+ */
+void
+gst_structure_remove_field(GstStructure *structure, const gchar *fieldname)
+{
+ GstStructureField *field;
+ GQuark id;
+ int i;
+
+ g_return_if_fail(structure != NULL);
+ g_return_if_fail(fieldname != NULL);
+
+ id = g_quark_from_string(fieldname);
+
+ for(i=0;i<structure->fields->len;i++){
+ field = GST_STRUCTURE_FIELD(structure, i);
+
+ if(field->name == id){
+ if(G_IS_VALUE(&field->value)){
+ g_value_unset(&field->value);
+ }
+ structure->fields = g_array_remove_index(structure->fields, i);
+ return;
+ }
+ }
+}
+
+/**
+ * gst_structure_get_field_type:
+ * @structure: a #GstStructure
+ * @fieldname: the name of the field
+ *
+ * Finds the field with the given name, and returns the type of the
+ * value it contains. If the field is not found, G_TYPE_NONE is
+ * returned.
+ *
+ * Returns: the #GValue of the field
+ */
+GType
+gst_structure_get_field_type(GstStructure *structure, const gchar *fieldname)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, G_TYPE_NONE);
+ g_return_val_if_fail(fieldname != NULL, G_TYPE_NONE);
+
+ field = gst_structure_get_field(structure, fieldname);
+ if(field == NULL) return G_TYPE_NONE;
+
+ return G_VALUE_TYPE(&field->value);
+}
+
+/**
+ * gst_structure_n_fields:
+ * @structure: a #GstStructure
+ *
+ * Accessor function.
+ *
+ * Returns: the number of fields in the structure
+ */
+gint
+gst_structure_n_fields(GstStructure *structure)
+{
+ g_return_val_if_fail(structure != NULL, 0);
+
+ return structure->fields->len;
+}
+
+/**
+ * gst_structure_has_field:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ *
+ * Accessor function.
+ *
+ * Returns: TRUE if the structure contains a field with the given name
+ */
+gboolean
+gst_structure_has_field(GstStructure *structure, const gchar *fieldname)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, 0);
+ g_return_val_if_fail(fieldname != NULL, 0);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ return (field != NULL);
+}
+
+/**
+ * gst_structure_has_field:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @type: the type of a value
+ *
+ * Accessor function.
+ *
+ * Returns: TRUE if the structure contains a field with the given name and type
+ */
+gboolean
+gst_structure_has_field_typed(GstStructure *structure, const gchar *fieldname,
+ GType type)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, 0);
+ g_return_val_if_fail(fieldname != NULL, 0);
+
+ field = gst_structure_get_field(structure, fieldname);
+ if(field == NULL) return FALSE;
+
+ return (G_VALUE_TYPE(&field->value) == type);
+}
+
+
+/* utility functions */
+
+/**
+ * gst_structure_get_boolean:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @ptr: a pointer to a #gboolean to set
+ *
+ * Sets the boolean pointed to by @ptr corresponding to the value of the
+ * given field. Caller is responsible for making sure the field exists
+ * and has the correct type.
+ *
+ * Returns: TRUE if the value could be set correctly
+ */
+gboolean
+gst_structure_get_boolean(GstStructure *structure, const gchar *fieldname,
+ gboolean *value)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, FALSE);
+ g_return_val_if_fail(fieldname != NULL, FALSE);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ if(field == NULL) return FALSE;
+ if(!G_VALUE_HOLDS_BOOLEAN(&field->value))return FALSE;
+
+ *value = g_value_get_boolean(&field->value);
+
+ return TRUE;
+}
+
+/**
+ * gst_structure_get_int:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @ptr: a pointer to an int to set
+ *
+ * Sets the int pointed to by @ptr corresponding to the value of the
+ * given field. Caller is responsible for making sure the field exists
+ * and has the correct type.
+ *
+ * Returns: TRUE if the value could be set correctly
+ */
+gboolean
+gst_structure_get_int(GstStructure *structure, const gchar *fieldname,
+ gint *value)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, FALSE);
+ g_return_val_if_fail(fieldname != NULL, FALSE);
+ g_return_val_if_fail(value != NULL, FALSE);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ if(field == NULL) return FALSE;
+ if(!G_VALUE_HOLDS_INT(&field->value))return FALSE;
+
+ *value = g_value_get_int(&field->value);
+
+ return TRUE;
+}
+
+/**
+ * gst_structure_get_fourcc:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @ptr: a pointer to a #GstFourcc to set
+ *
+ * Sets the #GstFourcc pointed to by @ptr corresponding to the value of the
+ * given field. Caller is responsible for making sure the field exists
+ * and has the correct type.
+ *
+ * Returns: TRUE if the value could be set correctly
+ */
+gboolean
+gst_structure_get_fourcc(GstStructure *structure, const gchar *fieldname,
+ guint32 *value)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, FALSE);
+ g_return_val_if_fail(fieldname != NULL, FALSE);
+ g_return_val_if_fail(value != NULL, FALSE);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ if(field == NULL) return FALSE;
+ if(!G_VALUE_HOLDS_UINT(&field->value))return FALSE;
+
+ *value = g_value_get_uint(&field->value);
+
+ return TRUE;
+}
+
+/**
+ * gst_structure_get_double:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @ptr: a pointer to a #GstFourcc to set
+ *
+ * Sets the double pointed to by @ptr corresponding to the value of the
+ * given field. Caller is responsible for making sure the field exists
+ * and has the correct type.
+ *
+ * Returns: TRUE if the value could be set correctly
+ */
+gboolean gst_structure_get_double(GstStructure *structure,
+ const gchar *fieldname, gdouble *value)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, FALSE);
+ g_return_val_if_fail(fieldname != NULL, FALSE);
+ g_return_val_if_fail(value != NULL, FALSE);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ if(field == NULL) return FALSE;
+ if(!G_VALUE_HOLDS_DOUBLE(&field->value))return FALSE;
+
+ *value = g_value_get_double(&field->value);
+
+ return TRUE;
+}
+
+/**
+ * gst_structure_get_string:
+ * @structure: a #GstStructure
+ * @fieldname: the name of a field
+ * @ptr: a pointer to a #GstFourcc to set
+ *
+ * Finds the field corresponding to @fieldname, and returns the string
+ * contained in the field's value. Caller is responsible for making
+ * sure the field exists and has the correct type.
+ *
+ * The string should not be modified, and remains valid until the next
+ * call to a gst_structure_*() function with the given structure.
+ *
+ * Returns: a pointer to the string
+ */
+const gchar *
+gst_structure_get_string(GstStructure *structure, const gchar *fieldname)
+{
+ GstStructureField *field;
+
+ g_return_val_if_fail(structure != NULL, NULL);
+ g_return_val_if_fail(fieldname != NULL, NULL);
+
+ field = gst_structure_get_field(structure, fieldname);
+
+ if(field == NULL) return FALSE;
+ if(!G_VALUE_HOLDS_STRING(&field->value))return FALSE;
+
+ return g_value_get_string(&field->value);
+}
+
+/**
+ * gst_structure_to_string:
+ * @structure: a #GstStructure
+ *
+ * Converts @structure to a human-readable representation.
+ *
+ * Returns: a pointer to string allocated by g_malloc()
+ */
+gchar *
+gst_structure_to_string(GstStructure *structure)
+{
+ GstStructureField *field;
+ GString *s;
+ int i;
+
+ g_return_val_if_fail(structure != NULL, NULL);
+
+ s = g_string_new("");
+ g_string_append_printf(s, "\"%s\"", g_quark_to_string(structure->name));
+ for(i=0;i<structure->fields->len;i++){
+ GValue s_val = { 0 };
+
+ field = GST_STRUCTURE_FIELD(structure, i);
+
+ g_value_init(&s_val, G_TYPE_STRING);
+
+ g_value_transform(&field->value, &s_val);
+ g_string_append_printf(s, ", %s:%s", g_quark_to_string(field->name),
+ g_value_get_string(&s_val));
+ g_value_unset(&s_val);
+ }
+ return g_string_free(s, FALSE);
+}
+
+/**
+ * gst_structure_from_string:
+ * @structure: a #GstStructure
+ *
+ * Creates a #GstStructure from a string representation.
+ *
+ * Returns: a new #GstStructure
+ */
+GstStructure *
+gst_structure_from_string (const gchar *string)
+{
+ /* FIXME */
+
+ g_return_val_if_fail(string != NULL, NULL);
+
+ g_assert_not_reached();
+
+ return NULL;
+}
+
+static void
+_gst_structure_transform_to_string(const GValue *src_value, GValue *dest_value)
+{
+ g_return_if_fail(src_value != NULL);
+ g_return_if_fail(dest_value != NULL);
+
+ dest_value->data[0].v_pointer =
+ gst_structure_to_string (src_value->data[0].v_pointer);
+}
+
+
+static void _gst_structure_value_init (GValue *value)
+{
+ value->data[0].v_pointer = gst_structure_empty_new("");
+}
+
+static void _gst_structure_value_free (GValue *value)
+{
+ gst_structure_free(value->data[0].v_pointer);
+
+}
+
+static void _gst_structure_value_copy (const GValue *src, GValue *dest)
+{
+ dest->data[0].v_pointer = gst_structure_dup(src->data[0].v_pointer);
+}
+
+static gpointer _gst_structure_value_peek_pointer (const GValue *value)
+{
+ return value->data[0].v_pointer;
+}
+
--- /dev/null
+/* GStreamer
+ * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gobject/gvaluecollector.h>
+
+
+GType gst_type_fourcc;
+GType gst_type_int_range;
+GType gst_type_double_range;
+
+static void
+gst_value_init_fourcc (GValue *value)
+{
+ value->data[0].v_long = 0;
+}
+
+static void
+gst_value_copy_fourcc (const GValue *src_value, GValue *dest_value)
+{
+ dest_value->data[0].v_long = src_value->data[0].v_long;
+}
+
+static gchar *
+gst_value_collect_fourcc (GValue *value, guint n_collect_values,
+ GTypeCValue *collect_values, guint collect_flags)
+{
+ value->data[0].v_long = collect_values[0].v_long;
+
+ return NULL;
+}
+
+static gchar *
+gst_value_lcopy_fourcc (const GValue *value, guint n_collect_values,
+ GTypeCValue *collect_values, guint collect_flags)
+{
+ guint32 *fourcc_p = collect_values[0].v_pointer;
+
+ if (!fourcc_p)
+ return g_strdup_printf ("value location for `%s' passed as NULL",
+ G_VALUE_TYPE_NAME (value));
+
+ *fourcc_p = value->data[0].v_long;
+
+ return NULL;
+}
+
+void
+gst_value_set_fourcc (GValue *value, guint32 fourcc)
+{
+ g_return_if_fail (GST_VALUE_HOLDS_FOURCC (value));
+
+ value->data[0].v_long = fourcc;
+}
+
+guint32
+gst_value_get_fourcc (const GValue *value)
+{
+ g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
+
+ return value->data[0].v_long;
+}
+
+/* int range */
+
+static void
+gst_value_init_int_range (GValue *value)
+{
+ value->data[0].v_long = 0;
+}
+
+static void
+gst_value_copy_int_range (const GValue *src_value, GValue *dest_value)
+{
+ dest_value->data[0].v_long = src_value->data[0].v_long;
+}
+
+static gchar *
+gst_value_collect_int_range (GValue *value, guint n_collect_values,
+ GTypeCValue *collect_values, guint collect_flags)
+{
+ value->data[0].v_long = collect_values[0].v_long;
+
+ return NULL;
+}
+
+static gchar *
+gst_value_lcopy_int_range (const GValue *value, guint n_collect_values,
+ GTypeCValue *collect_values, guint collect_flags)
+{
+ guint32 *int_range_p = collect_values[0].v_pointer;
+
+ if (!int_range_p)
+ return g_strdup_printf ("value location for `%s' passed as NULL",
+ G_VALUE_TYPE_NAME (value));
+
+ *int_range_p = value->data[0].v_long;
+
+ return NULL;
+}
+
+void
+gst_value_set_int_range (GValue *value, int start, int end)
+{
+ g_return_if_fail (GST_VALUE_HOLDS_FOURCC (value));
+
+ value->data[0].v_long = start;
+ value->data[1].v_long = end;
+}
+
+int
+gst_value_get_int_range_start (const GValue *value)
+{
+ g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
+
+ return value->data[0].v_long;
+}
+
+int
+gst_value_get_int_range_end (const GValue *value)
+{
+ g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
+
+ return value->data[1].v_long;
+}
+
+static void
+gst_value_transform_fourcc_string (const GValue *src_value,
+ GValue *dest_value)
+{
+ dest_value->data[0].v_pointer = g_strdup_printf(GST_FOURCC_FORMAT,
+ GST_FOURCC_ARGS(src_value->data[0].v_long));
+}
+
+static void
+gst_value_transform_int_range_string (const GValue *src_value,
+ GValue *dest_value)
+{
+ dest_value->data[0].v_pointer = g_strdup_printf("[%d,%d]",
+ (int)src_value->data[0].v_long, (int)src_value->data[1].v_long);
+}
+
+
+void
+_gst_value_initialize (void)
+{
+ GTypeInfo info = {
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ 0,
+ 0,
+ NULL,
+ NULL,
+ };
+ //const GTypeFundamentalInfo finfo = { G_TYPE_FLAG_DERIVABLE, };
+
+ {
+ static const GTypeValueTable value_table = {
+ gst_value_init_fourcc,
+ NULL,
+ gst_value_copy_fourcc,
+ NULL,
+ "i",
+ gst_value_collect_fourcc,
+ "p",
+ gst_value_lcopy_fourcc
+ };
+ info.value_table = &value_table;
+ gst_type_fourcc = g_type_register_static (G_TYPE_BOXED, "GstFourcc", &info, 0);
+ }
+
+ {
+ static const GTypeValueTable value_table = {
+ gst_value_init_int_range,
+ NULL,
+ gst_value_copy_int_range,
+ NULL,
+ "i",
+ gst_value_collect_int_range,
+ "p",
+ gst_value_lcopy_int_range
+ };
+ info.value_table = &value_table;
+ gst_type_int_range = g_type_register_static (G_TYPE_BOXED, "GstIntRange", &info, 0);
+ }
+
+ g_value_register_transform_func (GST_TYPE_FOURCC, G_TYPE_STRING,
+ gst_value_transform_fourcc_string);
+ g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
+ gst_value_transform_int_range_string);
+}
+
+
projects / platform / upstream / gstreamer.git / commitdiff