ruby-****@sourc*****
ruby-****@sourc*****
2003年 8月 24日 (日) 02:04:29 JST
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REMOTE_ADDR = 81.51.53.223
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/?Gst%3A%3AElementFactory
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= class Gst::ElementFactory
Creates Gst::Element instances.
== Object Hierarchy
* Gst::PluginFeature
== Class Methods
--- Gst::ElementFactory.find(aFactoryNameString)
Searches for an element factory of the given name.
If found, returns a Gst::ElementFactory object. Otherwise, returns nil.
--- Gst::ElementFactory.make(aFactoryNameString, anElementNameString=nil)
Creates a new Gst::Element of the type defined by the given element factory.
If element name is ommited (or nil), then the element will receive a guaranteed
unique name, consisting of the element factory name and a number.
If name is given, it will be given the name supplied.
Example:
# Creates a 'mad' GStreamer element, named 'foo':
elem1 = Gst::ElementFactory.make("mad", "foo")
# This line does exactly the same thing:
elem2 = Gst::ElementFactory.find("mad").create("foo")
== Instance Methods
--- create(anElementNameString=nil)
Creates a new element of the type defined by the element factory.
If element name is ommited (or nil), then the element will receive a guaranteed
unique name, consisting of the element factory name and a number.
If name is given, it will be given the name supplied.
--- details
Gets some public information about the factory,
mostly for the benefit of editors.
This information is encapsulated in a Hash object,
with the following (String) keys:
- longname: long (English) element name.
- klass: type of element, as hierarchy.
- license: license under which the element is provided.
- description: a short description about the element.
- version: version of the element.
- author: some information about the author(s).
- copyright: some copyright details (year, etc..).
Example:
# Prints all details related to the 'mad' element:
Gst::ElementFactory.find("mad").details do |k, v|
p "#{k}: #{v}"
end
--- each_pad_template { |aPadTemplateObject| block }
Calls the block for each pad template of the factory, passing a
reference to the Gst::PadTemplate as parameter.
Always returns nil.
--- pad_templates
Requests all pad templates of factory, in an array
of Gst::PadTemplate objects.
--- rank
Gets the rank of the factory:
- Gst::ElementFactory::RANK_MARGINAL;
- Gst::ElementFactory::RANK_NONE;
- Gst::ElementFactory::RANK_PRIMARY;
- Gst::ElementFactory::RANK_SECONDARY.
--- rank_marginal?
Checks if the rank of the factory equals Gst::ElementFactory::RANK_MARGINAL.
--- rank_none?
Checks if the rank of the factory equals Gst::ElementFactory::RANK_NONE.
--- rank_primary?
Checks if the rank of the factory equals Gst::ElementFactory::RANK_PRIMARY.
--- rank_secondary?
Checks if the rank of the factory equals Gst::ElementFactory::RANK_SECONDARY.
--- to_s
Gets a String representing the factory.
== Constants
--- RANK_MARGINAL
The element is only marginally usefull for autoplugging.
--- RANK_NONE
The plugin may not be used in autoplugging.
--- RANK_PRIMARY
The plugin is well suited for autoplugging.
--- RANK_SECONDARY
The plugin is suited for autoplugging but only as a second candidate.
- ((<lrz>))