ruby-****@sourc*****
ruby-****@sourc*****
2004年 4月 1日 (木) 21:01:41 JST
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REMOTE_ADDR = 195.207.101.112
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/en/?tut-gst-elements-state
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= Element States
+ {{link("tut-gst-bins-ghost-pads", nil, "tut-gst", "tut-gst-helloworld")}}
Here are the most important states of a Gst::Element:
:Gst::Element::STATE_NULL
Reset the state of an element.
:Gst::Element::STATE_READY
Will make the element ready to start processing data.
:Gst::Element::STATE_PAUSED
Temporary stops the data flow.
:Gst::Element::STATE_PLAYING
Means there really is data flowing through the graph.
The state of an element can be changed and retrieved with the following code:
# Start playback
bin.state = Gst::Element::STATE_PLAYING
...
# Playing?
if bin.state == Gst::Element::STATE_PLAYING
# do some stuff here
end
== Shortcuts
For your convenience, the following shortcuts are available:
bin.ready # same as bin.state = Gst::Element::STATE_READY
bin.play # same as bin.state = Gst::Element::STATE_PLAYING
bin.pause # same as bin.state = Gst::Element::STATE_PAUSED
bin.stop # same as bin.state = Gst::Element::STATE_NULL
bin.ready? # checks if bin.state == Gst::Element::STATE_READY
bin.playing? # checks if bin.state == Gst::Element::STATE_PLAYING
bin.paused? # checks if bin.state == Gst::Element::STATE_PAUSED
bin.stopped? # checks if bin.state == Gst::Element::STATE_NULL