author | hgs |
Fri, 14 May 2010 18:43:44 -0500 | |
changeset 20 | 7e3786c5ed27 |
parent 16 | 8e837d1bf446 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 2005 Stefan Kost <ensonic@users.sf.net> |
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* |
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* gstchildproxy.c: interface for multi child elements |
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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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|
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/** |
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* SECTION:gstchildproxy |
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* @short_description: Interface for multi child elements. |
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* @see_also: #GstBin |
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* |
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* This interface abstracts handling of property sets for elements with |
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* children. Imagine elements such as mixers or polyphonic generators. They all |
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* have multiple #GstPad or some kind of voice objects. Another use case are |
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* container elements like #GstBin. |
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* The element implementing the interface acts as a parent for those child |
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* objects. |
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* |
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* By implementing this interface the child properties can be accessed from the |
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* parent element by using gst_child_proxy_get() and gst_child_proxy_set(). |
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* |
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* Property names are written as "child-name::property-name". The whole naming |
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* scheme is recursive. Thus "child1::child2::property" is valid too, if |
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* "child1" and "child2" implement the #GstChildProxy interface. |
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*/ |
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/* FIXME-0.11: |
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* it would be nice to make gst_child_proxy_get_child_by_name virtual too and |
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* use GObject instead of GstObject. We could eventually provide the current |
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* implementation as a default if children are GstObjects. |
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* This change would allow to propose the interface for inclusion with |
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* glib/gobject. IMHO this is useful for GtkContainer and compound widgets too. |
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*/ |
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|
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#include "gst_private.h" |
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|
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#include "gstchildproxy.h" |
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#include "gstmarshal.h" |
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#include <gobject/gvaluecollector.h> |
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|
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/* signals */ |
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enum |
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{ |
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CHILD_ADDED, |
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CHILD_REMOVED, |
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LAST_SIGNAL |
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}; |
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|
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static guint signals[LAST_SIGNAL] = { 0 }; |
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|
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/** |
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* gst_child_proxy_get_child_by_name: |
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* @parent: the parent object to get the child from |
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* @name: the childs name |
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* |
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* Looks up a child element by the given name. |
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* |
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* Implementors can use #GstObject together with gst_object_get_name() |
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* |
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* Returns: the child object or %NULL if not found. Unref after usage. |
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* |
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* MT safe. |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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GstObject * |
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gst_child_proxy_get_child_by_name (GstChildProxy * parent, const gchar * name) |
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{ |
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guint count, i; |
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GstObject *object, *result; |
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gchar *object_name; |
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g_return_val_if_fail (GST_IS_CHILD_PROXY (parent), NULL); |
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g_return_val_if_fail (name != NULL, NULL); |
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result = NULL; |
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count = gst_child_proxy_get_children_count (parent); |
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for (i = 0; i < count; i++) { |
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gboolean eq; |
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if (!(object = gst_child_proxy_get_child_by_index (parent, i))) |
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continue; |
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object_name = gst_object_get_name (object); |
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if (object_name == NULL) { |
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g_warning ("child %u of parent %s has no name", i, |
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104 |
GST_OBJECT_NAME (parent)); |
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105 |
goto next; |
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106 |
} |
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107 |
eq = g_str_equal (object_name, name); |
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|
108 |
g_free (object_name); |
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|
109 |
|
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110 |
if (eq) { |
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111 |
result = object; |
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112 |
break; |
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113 |
} |
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114 |
next: |
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115 |
gst_object_unref (object); |
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116 |
} |
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return result; |
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118 |
} |
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119 |
|
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120 |
/** |
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121 |
* gst_child_proxy_get_child_by_index: |
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* @parent: the parent object to get the child from |
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* @index: the childs position in the child list |
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124 |
* |
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* Fetches a child by its number. |
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126 |
* |
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* Returns: the child object or %NULL if not found (index too high). Unref |
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128 |
* after usage. |
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129 |
* |
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130 |
* MT safe. |
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131 |
*/ |
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132 |
#ifdef __SYMBIAN32__ |
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133 |
EXPORT_C |
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134 |
#endif |
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135 |
|
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136 |
GstObject * |
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137 |
gst_child_proxy_get_child_by_index (GstChildProxy * parent, guint index) |
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138 |
{ |
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139 |
g_return_val_if_fail (GST_IS_CHILD_PROXY (parent), NULL); |
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140 |
|
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141 |
return (GST_CHILD_PROXY_GET_INTERFACE (parent)->get_child_by_index (parent, |
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142 |
index)); |
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143 |
} |
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144 |
|
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145 |
/** |
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146 |
* gst_child_proxy_get_children_count: |
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147 |
* @parent: the parent object |
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148 |
* |
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149 |
* Gets the number of child objects this parent contains. |
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150 |
* |
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151 |
* Returns: the number of child objects |
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152 |
* |
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153 |
* MT safe. |
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154 |
*/ |
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155 |
#ifdef __SYMBIAN32__ |
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156 |
EXPORT_C |
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157 |
#endif |
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158 |
|
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159 |
guint |
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160 |
gst_child_proxy_get_children_count (GstChildProxy * parent) |
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161 |
{ |
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162 |
g_return_val_if_fail (GST_IS_CHILD_PROXY (parent), 0); |
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163 |
|
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164 |
return (GST_CHILD_PROXY_GET_INTERFACE (parent)->get_children_count (parent)); |
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165 |
} |
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166 |
|
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167 |
/** |
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168 |
* gst_child_proxy_lookup: |
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169 |
* @object: object to lookup the property in |
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* @name: name of the property to look up |
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* @target: pointer to a #GstObject that takes the real object to set property on |
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172 |
* @pspec: pointer to take the #GParamSpec describing the property |
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173 |
* |
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174 |
* Looks up which object and #GParamSpec would be effected by the given @name. |
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175 |
* |
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176 |
* Returns: TRUE if @target and @pspec could be found. FALSE otherwise. In that |
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177 |
* case the values for @pspec and @target are not modified. Unref @target after |
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178 |
* usage. |
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179 |
* |
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180 |
* MT safe. |
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181 |
*/ |
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182 |
#ifdef __SYMBIAN32__ |
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183 |
EXPORT_C |
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184 |
#endif |
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185 |
|
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186 |
gboolean |
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187 |
gst_child_proxy_lookup (GstObject * object, const gchar * name, |
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188 |
GstObject ** target, GParamSpec ** pspec) |
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189 |
{ |
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190 |
gboolean res = FALSE; |
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191 |
gchar **names, **current; |
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192 |
|
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193 |
g_return_val_if_fail (GST_IS_OBJECT (object), FALSE); |
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|
194 |
g_return_val_if_fail (name != NULL, FALSE); |
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|
195 |
|
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196 |
gst_object_ref (object); |
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|
197 |
|
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198 |
current = names = g_strsplit (name, "::", -1); |
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199 |
while (current[1]) { |
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200 |
GstObject *next; |
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|
201 |
|
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202 |
if (!GST_IS_CHILD_PROXY (object)) { |
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203 |
GST_INFO |
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204 |
("object %s is not a parent, so you cannot request a child by name %s", |
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205 |
GST_OBJECT_NAME (object), current[0]); |
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206 |
break; |
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207 |
} |
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208 |
next = gst_child_proxy_get_child_by_name (GST_CHILD_PROXY (object), |
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209 |
current[0]); |
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|
210 |
if (!next) { |
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GST_INFO ("no such object %s", current[0]); |
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break; |
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213 |
} |
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|
214 |
gst_object_unref (object); |
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|
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object = next; |
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|
216 |
current++; |
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|
217 |
}; |
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|
218 |
if (current[1] == NULL) { |
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|
219 |
GParamSpec *spec = |
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g_object_class_find_property (G_OBJECT_GET_CLASS (object), current[0]); |
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|
221 |
if (spec == NULL) { |
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|
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GST_INFO ("no param spec named %s", current[0]); |
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|
223 |
} else { |
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|
224 |
if (pspec) |
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|
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*pspec = spec; |
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|
226 |
if (target) { |
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|
227 |
gst_object_ref (object); |
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|
228 |
*target = object; |
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229 |
} |
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230 |
res = TRUE; |
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|
231 |
} |
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232 |
} |
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|
233 |
gst_object_unref (object); |
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|
234 |
g_strfreev (names); |
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|
235 |
return res; |
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|
236 |
} |
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|
237 |
|
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|
238 |
/** |
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|
239 |
* gst_child_proxy_get_property: |
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|
240 |
* @object: object to query |
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241 |
* @name: name of the property |
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242 |
* @value: a #GValue that should take the result. |
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|
243 |
* |
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|
244 |
* Gets a single property using the GstChildProxy mechanism. |
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|
245 |
* You are responsible for for freeing it by calling g_value_unset() |
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|
246 |
*/ |
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|
247 |
#ifdef __SYMBIAN32__ |
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248 |
EXPORT_C |
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249 |
#endif |
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|
250 |
|
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251 |
void |
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|
252 |
gst_child_proxy_get_property (GstObject * object, const gchar * name, |
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|
253 |
GValue * value) |
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|
254 |
{ |
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|
255 |
GParamSpec *pspec; |
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|
256 |
GstObject *target; |
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|
257 |
|
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|
258 |
g_return_if_fail (GST_IS_OBJECT (object)); |
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|
259 |
g_return_if_fail (name != NULL); |
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|
260 |
g_return_if_fail (G_IS_VALUE (value)); |
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|
261 |
|
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|
262 |
if (!gst_child_proxy_lookup (object, name, &target, &pspec)) |
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|
263 |
goto not_found; |
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|
264 |
|
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|
265 |
g_object_get_property (G_OBJECT (target), pspec->name, value); |
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|
266 |
gst_object_unref (target); |
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|
267 |
|
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|
268 |
return; |
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|
269 |
|
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|
270 |
not_found: |
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|
271 |
{ |
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|
272 |
g_warning ("cannot get property %s from object %s", name, |
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|
273 |
GST_OBJECT_NAME (object)); |
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|
274 |
return; |
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|
275 |
} |
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|
276 |
} |
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|
277 |
|
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|
278 |
/** |
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|
279 |
* gst_child_proxy_get_valist: |
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|
280 |
* @object: the object to query |
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|
281 |
* @first_property_name: name of the first property to get |
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|
282 |
* @var_args: return location for the first property, followed optionally by more name/return location pairs, followed by NULL |
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|
283 |
* |
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|
284 |
* Gets properties of the parent object and its children. |
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|
285 |
*/ |
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|
286 |
#ifdef __SYMBIAN32__ |
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|
287 |
EXPORT_C |
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|
288 |
#endif |
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|
289 |
|
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|
290 |
void |
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|
291 |
gst_child_proxy_get_valist (GstObject * object, |
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|
292 |
const gchar * first_property_name, va_list var_args) |
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|
293 |
{ |
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|
294 |
const gchar *name; |
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|
295 |
gchar *error = NULL; |
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|
296 |
GValue value = { 0, }; |
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|
297 |
|
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|
298 |
g_return_if_fail (G_IS_OBJECT (object)); |
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diff
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|
299 |
|
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|
300 |
name = first_property_name; |
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|
301 |
|
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|
302 |
/* iterate over pairs */ |
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|
303 |
while (name) { |
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diff
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|
304 |
gst_child_proxy_get_property (object, name, &value); |
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diff
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|
305 |
G_VALUE_LCOPY (&value, var_args, 0, &error); |
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|
306 |
if (error) { |
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|
307 |
g_warning ("error copying value: %s", error); |
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|
308 |
return; |
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diff
changeset
|
309 |
} |
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|
310 |
g_value_unset (&value); |
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parents:
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|
311 |
name = va_arg (var_args, gchar *); |
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diff
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|
312 |
} |
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diff
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|
313 |
} |
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diff
changeset
|
314 |
|
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diff
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|
315 |
/** |
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parents:
diff
changeset
|
316 |
* gst_child_proxy_get: |
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|
317 |
* @object: the parent object |
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|
318 |
* @first_property_name: name of the first property to get |
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|
319 |
* @...: return location for the first property, followed optionally by more name/return location pairs, followed by NULL |
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|
320 |
* |
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|
321 |
* Gets properties of the parent object and its children. |
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|
322 |
*/ |
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|
323 |
#ifdef __SYMBIAN32__ |
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|
324 |
EXPORT_C |
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|
325 |
#endif |
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|
326 |
|
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|
327 |
void |
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|
328 |
gst_child_proxy_get (GstObject * object, const gchar * first_property_name, ...) |
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|
329 |
{ |
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|
330 |
va_list var_args; |
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|
331 |
|
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|
332 |
g_return_if_fail (GST_IS_OBJECT (object)); |
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|
333 |
|
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|
334 |
va_start (var_args, first_property_name); |
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|
335 |
gst_child_proxy_get_valist (object, first_property_name, var_args); |
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|
336 |
va_end (var_args); |
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|
337 |
} |
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|
338 |
|
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|
339 |
/** |
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|
340 |
* gst_child_proxy_set_property: |
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|
341 |
* @object: the parent object |
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|
342 |
* @name: name of the property to set |
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|
343 |
* @value: new #GValue for the property |
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|
344 |
* |
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diff
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|
345 |
* Sets a single property using the GstChildProxy mechanism. |
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diff
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|
346 |
*/ |
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diff
changeset
|
347 |
#ifdef __SYMBIAN32__ |
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|
348 |
EXPORT_C |
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|
349 |
#endif |
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|
350 |
|
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|
351 |
void |
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|
352 |
gst_child_proxy_set_property (GstObject * object, const gchar * name, |
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|
353 |
const GValue * value) |
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|
354 |
{ |
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|
355 |
GParamSpec *pspec; |
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|
356 |
GstObject *target; |
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|
357 |
|
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|
358 |
g_return_if_fail (GST_IS_OBJECT (object)); |
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|
359 |
g_return_if_fail (name != NULL); |
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|
360 |
g_return_if_fail (G_IS_VALUE (value)); |
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diff
changeset
|
361 |
|
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|
362 |
if (!gst_child_proxy_lookup (object, name, &target, &pspec)) |
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|
363 |
goto not_found; |
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diff
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|
364 |
|
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|
365 |
g_object_set_property (G_OBJECT (target), pspec->name, value); |
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|
366 |
gst_object_unref (target); |
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|
367 |
return; |
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diff
changeset
|
368 |
|
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|
369 |
not_found: |
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|
370 |
{ |
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diff
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|
371 |
g_warning ("cannot set property %s on object %s", name, |
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|
372 |
GST_OBJECT_NAME (object)); |
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|
373 |
return; |
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diff
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|
374 |
} |
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diff
changeset
|
375 |
} |
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diff
changeset
|
376 |
|
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diff
changeset
|
377 |
/** |
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parents:
diff
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|
378 |
* gst_child_proxy_set_valist: |
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parents:
diff
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|
379 |
* @object: the parent object |
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|
380 |
* @first_property_name: name of the first property to set |
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parents:
diff
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|
381 |
* @var_args: value for the first property, followed optionally by more name/value pairs, followed by NULL |
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parents:
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changeset
|
382 |
* |
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Revision: 200949
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parents:
diff
changeset
|
383 |
* Sets properties of the parent object and its children. |
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parents:
diff
changeset
|
384 |
*/ |
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Revision: 200949
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parents:
diff
changeset
|
385 |
#ifdef __SYMBIAN32__ |
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|
386 |
EXPORT_C |
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parents:
diff
changeset
|
387 |
#endif |
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parents:
diff
changeset
|
388 |
|
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Revision: 200949
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parents:
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changeset
|
389 |
void |
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parents:
diff
changeset
|
390 |
gst_child_proxy_set_valist (GstObject * object, |
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parents:
diff
changeset
|
391 |
const gchar * first_property_name, va_list var_args) |
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changeset
|
392 |
{ |
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|
393 |
const gchar *name; |
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|
394 |
gchar *error = NULL; |
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|
395 |
GValue value = { 0, }; |
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diff
changeset
|
396 |
|
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Revision: 200949
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parents:
diff
changeset
|
397 |
g_return_if_fail (G_IS_OBJECT (object)); |
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Revision: 200949
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parents:
diff
changeset
|
398 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
399 |
name = first_property_name; |
0e761a78d257
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parents:
diff
changeset
|
400 |
|
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Revision: 200949
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parents:
diff
changeset
|
401 |
/* iterate over pairs */ |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
402 |
while (name) { |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
403 |
GParamSpec *pspec; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
404 |
GstObject *target; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
405 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
if (!gst_child_proxy_lookup (object, name, &target, &pspec)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
g_warning ("no such property %s in object %s", name, |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
GST_OBJECT_NAME (object)); |
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Revision: 200949
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parents:
diff
changeset
|
409 |
continue; |
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Revision: 200949
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parents:
diff
changeset
|
410 |
} |
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Revision: 200949
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parents:
diff
changeset
|
411 |
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec)); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
G_VALUE_COLLECT (&value, var_args, G_VALUE_NOCOPY_CONTENTS, &error); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
if (error) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
g_warning ("error copying value: %s", error); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
gst_object_unref (target); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
return; |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
g_object_set_property (G_OBJECT (target), pspec->name, &value); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
gst_object_unref (target); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
g_value_unset (&value); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
422 |
name = va_arg (var_args, gchar *); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
423 |
} |
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Revision: 200949
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parents:
diff
changeset
|
424 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
/** |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
* gst_child_proxy_set: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
* @object: the parent object |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
* @first_property_name: name of the first property to set |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
* @...: value for the first property, followed optionally by more name/value pairs, followed by NULL |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
431 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
* Sets properties of the parent object and its children. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
#ifdef __SYMBIAN32__ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
EXPORT_C |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
void |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
gst_child_proxy_set (GstObject * object, const gchar * first_property_name, ...) |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
440 |
{ |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
va_list var_args; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
g_return_if_fail (GST_IS_OBJECT (object)); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
va_start (var_args, first_property_name); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
gst_child_proxy_set_valist (object, first_property_name, var_args); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
va_end (var_args); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
448 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
450 |
/** |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
* gst_child_proxy_child_added: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
* @object: the parent object |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
* @child: the newly added child |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
* Emits the "child-added" signal. |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
456 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
#ifdef __SYMBIAN32__ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
EXPORT_C |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
459 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
461 |
void |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
gst_child_proxy_child_added (GstObject * object, GstObject * child) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
g_signal_emit (G_OBJECT (object), signals[CHILD_ADDED], 0, child); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
/** |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
* gst_child_proxy_child_removed: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
* @object: the parent object |
16 | 470 |
* @child: the removed child |
0
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
471 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
* Emits the "child-removed" signal. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
*/ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
#ifdef __SYMBIAN32__ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
EXPORT_C |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
void |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
gst_child_proxy_child_removed (GstObject * object, GstObject * child) |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
480 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
g_signal_emit (G_OBJECT (object), signals[CHILD_REMOVED], 0, child); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
/* gobject methods */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
static void |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
487 |
gst_child_proxy_base_init (gpointer g_class) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
{ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
static gboolean initialized = FALSE; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
if (!initialized) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
/* create interface signals and properties here. */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
/** |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
* GstChildProxy::child-added: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
* @child_proxy: the #GstChildProxy |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
* @object: the #GObject that was added |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
* Will be emitted after the @object was added to the @child_proxy. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
*/ |
16 | 500 |
/* FIXME 0.11: use GST_TYPE_OBJECT as GstChildProxy only |
501 |
* supports GstObjects */ |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
signals[CHILD_ADDED] = |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
g_signal_new ("child-added", G_TYPE_FROM_CLASS (g_class), |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstChildProxyInterface, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
child_added), NULL, NULL, gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
G_TYPE_OBJECT); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
/** |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
* GstChildProxy::child-removed: |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
* @child_proxy: the #GstChildProxy |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
* @object: the #GObject that was removed |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
* |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
* Will be emitted after the @object was removed from the @child_proxy. |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
*/ |
16 | 515 |
/* FIXME 0.11: use GST_TYPE_OBJECT as GstChildProxy only |
516 |
* supports GstObjects */ |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
signals[CHILD_REMOVED] = |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
g_signal_new ("child-removed", G_TYPE_FROM_CLASS (g_class), |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstChildProxyInterface, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
child_removed), NULL, NULL, gst_marshal_VOID__OBJECT, G_TYPE_NONE, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
1, G_TYPE_OBJECT); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
initialized = TRUE; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
#ifdef __SYMBIAN32__ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
EXPORT_C |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
#endif |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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531 |
GType |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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532 |
gst_child_proxy_get_type (void) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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533 |
{ |
16 | 534 |
static volatile gsize type = 0; |
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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535 |
|
16 | 536 |
if (g_once_init_enter (&type)) { |
537 |
GType _type; |
|
0
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
static const GTypeInfo info = { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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539 |
sizeof (GstChildProxyInterface), |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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540 |
gst_child_proxy_base_init, /* base_init */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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541 |
NULL, /* base_finalize */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
NULL, /* class_init */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
NULL, /* class_finalize */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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544 |
NULL, /* class_data */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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545 |
0, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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546 |
0, /* n_preallocs */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
NULL /* instance_init */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
}; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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549 |
|
16 | 550 |
_type = |
551 |
g_type_register_static (G_TYPE_INTERFACE, "GstChildProxy", &info, 0); |
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552 |
||
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g_type_interface_add_prerequisite (_type, GST_TYPE_OBJECT); |
|
554 |
g_once_init_leave (&type, (gsize) _type); |
|
0
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
return type; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
} |