jmfglossary.html

jmf指导文件参考资料

</p>

<dl>
  <dt> <a name="95111"> </a><font face="Palatino, Times New Roman, Times, serif">A JMF plug-in that parses the input stream. If the stream contains interleaved tracks, they are extracted and output as separate tracks.</font>
</dl>

<p>
  <a name="94838"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>duration</strong></font>
</p>

<dl>
  <dt> <a name="95126"> </a><font face="Palatino, Times New Roman, Times, serif">The length of time it takes to play the media at the default rate.</font>
</dl>

<p>
  <a name="94839"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>Effect</strong></font>
</p>

<dl>
  <dt> <a name="95133"> </a><font face="Palatino, Times New Roman, Times, serif">A JMF plug-in that applies and effect algorithm to a track and outputs the modified track in the same format.</font>
</dl>

<p>
  <a name="93833"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>encode</strong></font>
</p>

<dl>
  <dt> <a name="95105"> </a><font face="Palatino, Times New Roman, Times, serif">Convert a data stream from an uncompressed type to a compressed type.</font>
</dl>

<p>
  <a name="93834"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>end of media (eom)</strong></font>
</p>

<dl>
  <dt> <a name="95144"> </a><font face="Palatino, Times New Roman, Times, serif">The end of a media stream.</font>
</dl>

<p>
  <a name="97621"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>StreamWriterControl</strong></font>
</p>

<dl>
  <dt> <a name="97622"> </a><font face="Palatino, Times New Roman, Times, serif">A <code>Control</code> implemented by data sinks and multiplexers that generate output data. This <code>Control</code> enables users to specify a limit on the amount of data generated. </font>
</dl>

<p>
  <a name="97623"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>format</strong></font>
</p>

<dl>
  <dt> <a name="94099"> </a><font face="Palatino, Times New Roman, Times, serif">A structure for describing a media data type.</font>
</dl>

<p>
  <a name="93837"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>frame</strong></font>
</p>

<dl>
  <dt> <a name="95148"> </a><font face="Palatino, Times New Roman, Times, serif">One unit of data in a track. For example, one image in a video track.</font>
</dl>

<p>
  <a name="93838"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>frame rate</strong></font>
</p>

<dl>
  <dt> <a name="95149"> </a><font face="Palatino, Times New Roman, Times, serif">The number of frames that are displayed per second.</font>
</dl>

<p>
  <a name="93839"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>GainChangeEvent</strong></font>
</p>

<dl>
  <dt> <a name="95154"> </a><font face="Palatino, Times New Roman, Times, serif">An event posted by a <code>GainControl</code> whenever the volume changes.</font>
</dl>

<p>
  <a name="93840"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>GainChangeListener</strong></font>
</p>

<dl>
  <dt> <a name="95161"> </a><font face="Palatino, Times New Roman, Times, serif">An object that implements the <code>GainChangeListener</code> interface to receive <code>GainChangeEvents</code> from a <code>GainControl</code>.</font>
</dl>

<p>
  <a name="93841"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>GainControl</strong></font>
</p>

<dl>
  <dt> <a name="95150"> </a><font face="Palatino, Times New Roman, Times, serif">A JMF <code>Control</code> that enables programmatic or interactive control over the playback volume.</font>
</dl>

<p>
  <a name="93843"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>JMF (Java Media Framework) </strong></font>
</p>

<dl>
  <dt> <a name="93945"> </a><font face="Palatino, Times New Roman, Times, serif">An application programming interface (API) for incorporating media data types into Java applications and applets.</font>
</dl>

<p>
  <a name="93844"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>key frame</strong></font>
</p>

<dl>
  <dt> <a name="97334"> </a><font face="Palatino, Times New Roman, Times, serif">A frame of video that contains the data for the entire frame rather than just the differences from the previous frame.</font>
</dl>

<p>
  <a name="94036"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>latency</strong></font>
</p>

<dl>
  <dt> <a name="95750"> </a><font face="Palatino, Times New Roman, Times, serif">See <em>start latency</em>.</font>
</dl>

<p>
  <a name="93845"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>managed controller</strong></font>
</p>

<dl>
  <dt> <a name="94000"> </a><font face="Palatino, Times New Roman, Times, serif">A <code>Controller</code> that is synchronized with other <code>Controllers</code> through a managing <code>Player</code>. The managing <code>Player</code> drives the operation of each managed <code>Controller</code>--while a <code>Controller</code> is being managed, you should not directly manipulate its state.</font>
</dl>

<p>
  <a name="93846"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>Manager</strong></font>
</p>

<dl>
  <dt> <a name="95171"> </a><font face="Palatino, Times New Roman, Times, serif">The JMF access point for obtaining system dependent resources such as <code>Players</code>, <code>Processors</code>, <code>DataSources </code>and the system <code>TimeBase</code>.</font>
</dl>

<p>
  <a name="93847"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>managing player</strong></font>
</p>

<dl>
  <dt> <a name="94007"> </a><font face="Palatino, Times New Roman, Times, serif">A <code>Player</code> that is driving the operation of other <code>Controllers</code> in order to synchronize them. The <code>addController</code> method is used to place <code>Controllers</code> under the control of a managing <code>Player</code>.</font>
</dl>

<p>
  <a name="93848"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>maximum start latency</strong></font>
</p>

<dl>
  <dt> <a name="95211"> </a><font face="Palatino, Times New Roman, Times, serif">The maximum length of time before a <code>Player</code> will be ready to present media data.</font>
</dl>

<p>
  <a name="93849"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media capture</strong></font>
</p>

<dl>
  <dt> <a name="95216"> </a><font face="Palatino, Times New Roman, Times, serif">The process of acquiring media data from a source such as a microphone or a video capture card that's connected to a camera.</font>
</dl>

<p>
  <a name="94020"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media data</strong></font>
</p>

<dl>
  <dt> <a name="94021"> </a><font face="Palatino, Times New Roman, Times, serif">The media information contained in a media stream. </font>
</dl>

<p>
  <a name="95242"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media event</strong></font>
</p>

<dl>
  <dt> <a name="95244"> </a><font face="Palatino, Times New Roman, Times, serif">An event posted by a <code>GainControl</code>, <code>DataSink</code>,<code> </code>or a <code>Controller</code> to notify listeners that the status of the object posting the event has changed.</font>
</dl>

<p>
  <a name="93853"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media processing</strong></font>
</p>

<dl>
  <dt> <a name="95256"> </a><font face="Palatino, Times New Roman, Times, serif">Manipulating media data to apply effect algorithms, convert the data to a different format, or present it.</font>
</dl>

<p>
  <a name="93854"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media stream</strong></font>
</p>

<dl>
  <dt> <a name="94459"> </a><font face="Palatino, Times New Roman, Times, serif">A data stream that contains time-based media information.</font>
</dl>

<p>
  <a name="93855"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>media time</strong></font>
</p>

<dl>
  <dt> <a name="95259"> </a><font face="Palatino, Times New Roman, Times, serif">The current position in a media stream.</font>
</dl>

<p>
  <a name="93856"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>MediaHandler</strong></font>
</p>

<dl>
  <dt> <a name="95298"> </a><font face="Palatino, Times New Roman, Times, serif">An object that implements the <code>MediaHandler</code> interface, which defines how the media source that the handler uses to obtain content is selected. There are currently three supported types of <code>MediaHandlers</code>: <code>Player</code> (including <code>Processor</code>), <code>MediaProxy</code>, and <code>DataSink</code>.</font>
</dl>

<p>
  <a name="93857"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>MediaLocator</strong></font>
</p>

<dl>
  <dt> <a name="95312"> </a><font face="Palatino, Times New Roman, Times, serif"><code>A</code>n object that describes the media that a <code>Player</code> presents. A <code>MediaLocator</code> is similar to a <code>URL</code> and can be constructed from a <code>URL</code>. In the Java programming language, a <code>URL</code> can only be constructed if the corresponding protocol handler is installed on the system. <code>MediaLocator</code> doesn't have this restriction.</font>
</dl>

<p>
  <a name="93858"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>MediaProxy</strong></font>
</p>

<dl>
  <dt> <a name="95327"> </a><font face="Palatino, Times New Roman, Times, serif">An object that processes content from one <code>DataSource</code> to create another. Typically, a <code>MediaProxy</code> reads a text configuration file that contains all of the information needed to make a connection to a server and obtain media data. </font>
</dl>

<p>
  <a name="94292"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>MIME type</strong></font>
</p>

<dl>
  <dt> <a name="94416"> </a><font face="Palatino, Times New Roman, Times, serif">A standardized content type description based on the Multipurpose Internet Mail Extensions (MIME) specification. </font>
</dl>

<p>
  <a name="93859"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>MonitorControl</strong></font>
</p>

<dl>
  <dt> <a name="95338"> </a><font face="Palatino, Times New Roman, Times, serif">A <code>Control</code> that provides a way to display the capture monitor for a particular capture device.</font>
</dl>

<p>
  <a name="97343"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>multicast</strong></font>
</p>

<dl>
  <dt> <a name="97347"> </a><font face="Palatino, Times New Roman, Times, serif">Transmit a data stream to a select group of participants. See also <em>broadcast</em>, <em>unicast</em>.</font>
</dl>

<p>
  <a name="97344"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>multiplex</strong></font>
</p>

<dl>
  <dt> <a name="94405"> </a><font face="Palatino, Times New Roman, Times, serif">Merge separate tracks into one multiplexed media stream.</font>
</dl>

<p>
  <a name="94372"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>multiplexed media stream</strong></font>
</p>

<dl>
  <dt> <a name="94377"> </a><font face="Palatino, Times New Roman, Times, serif">A media stream that contains multiple channels of media data.</font>
</dl>

<p>
  <a name="93862"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>Multiplexer</strong></font>
</p>

<dl>
  <dt> <a name="95357"> </a><font face="Palatino, Times New Roman, Times, serif">A JMF plug-in that combines multiple tracks of input data into a single interleaved output stream and delivers the resulting stream as an output <code>DataSource</code>.</font>
</dl>

<p>
  <a name="93863"> </a><font face="Palatino, Times New Roman, Times, serif"><strong>output</strong> <strong>data source</strong></font>
</p>

<dl>
  <dt> <a name="95366"> </a><font face="Palatino, Times New Roman, Times, serif">A <code>DataSource</code> that encapsulates a <code>Processor</code> object's output.</font>
</dl>