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293 lines
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293 lines
13 KiB
HTML
<div class="header">
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<div class="subTitle">
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javax.sound.sampled
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</div>
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<h2 class="title" title="Class LineEvent">Class LineEvent</h2>
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</div><div class="contentContainer">
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<ul class="inheritance">
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<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>
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<ul class="inheritance">
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<li><a href="../../../java/util/EventObject.html" title="class in java.util">java.util.EventObject</a></li>
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<li>
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<ul class="inheritance">
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<li>javax.sound.sampled.LineEvent</li>
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</ul> </li>
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</ul> </li>
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</ul>
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<div class="description">
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<ul class="blockList">
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<li class="blockList">
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<dl>
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<dt>
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All Implemented Interfaces:
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</dt>
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<dd>
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<span><a href="../../../java/io/Serializable.html" title="java.io中的接口">Serializable</a></span>
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</dd>
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</dl>
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<hr/> <br/> <pre>public class <span class="typeNameLabel">LineEvent</span>
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extends <a href="../../../java/util/EventObject.html" title="class in java.util">EventObject</a></pre>
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<div class="block">
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<span><code>LineEvent</code>类封装了线路打开，关闭，启动或停止时线路发送监听器的信息。</span>
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<span>这四个状态变化中的每一个都由对应的事件类型表示。</span>
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<span>侦听器接收该事件作为其<a href="../../../javax/sound/sampled/LineListener.html#update-javax.sound.sampled.LineEvent-"><code>update</code></a>方法的参数。</span>
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<span>通过查询事件，侦听器可以了解事件的类型，负责事件的行以及事件发生时线路处理的数据量。</span>
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<p> <span>虽然这个类实现了Serializable，但尝试序列化一个<code>LineEvent</code>对象将失败。</span> </p>
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</div>
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<dl>
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<dt>
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<span class="simpleTagLabel">从以下版本开始：</span>
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</dt>
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<dd>
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1.3
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</dd>
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<dt>
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<span class="seeLabel">另请参见：</span>
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</dt>
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<dd>
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<span><a href="../../../javax/sound/sampled/Line.html" title="javax.sound.sampled中的接口"><code>Line</code></a> ， <a href="../../../javax/sound/sampled/LineListener.html#update-javax.sound.sampled.LineEvent-"><code>LineListener.update(javax.sound.sampled.LineEvent)</code></a></span>
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</dd>
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</dl> </li>
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</ul>
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</div>
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<div class="summary">
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<ul class="blockList">
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<li class="blockList">
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<!-- ======== NESTED CLASS SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="nested.class.summary">
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<!-- --> </a> <h3>Nested Class Summary</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Nested Class Summary table, listing nested classes, and an explanation">
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<caption>
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<span>Nested Classes</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Class and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>static class </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.Type.html" title="class in javax.sound.sampled">LineEvent.Type</a></span></code>
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<div class="block">
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LineEvent.Type内部类标识一行发生的事件。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- =========== FIELD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="field.summary">
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<!-- --> </a> <h3>Field Summary</h3>
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<ul class="blockList">
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<li class="blockList"><a name="fields.inherited.from.class.java.util.EventObject">
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<!-- --> </a> <h3>Fields inherited from class java.util.<a href="../../../java/util/EventObject.html" title="class in java.util">EventObject</a></h3> <code><a href="../../../java/util/EventObject.html#source">source</a></code></li>
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</ul> </li>
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</ul>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.summary">
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<!-- --> </a> <h3>构造方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
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<caption>
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<span>构造方法</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colOne" scope="col">Constructor and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.html#LineEvent-javax.sound.sampled.Line-javax.sound.sampled.LineEvent.Type-long-">LineEvent</a></span>(<a href="../../../javax/sound/sampled/Line.html" title="interface in javax.sound.sampled">Line</a> line, <a href="../../../javax/sound/sampled/LineEvent.Type.html" title="class in javax.sound.sampled">LineEvent.Type</a> type, long position)</code>
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<div class="block">
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构造指定类型的新事件，源自指定的行。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.summary">
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<!-- --> </a> <h3>方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption>
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor" id="i0">
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<td class="colFirst"><code>long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.html#getFramePosition--">getFramePosition</a></span>()</code>
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<div class="block">
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当事件发生时，获取线路音频数据中的位置，以样本帧表示。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i1">
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<td class="colFirst"><code><a href="../../../javax/sound/sampled/Line.html" title="interface in javax.sound.sampled">Line</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.html#getLine--">getLine</a></span>()</code>
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<div class="block">
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获取作为此事件的来源的音频线。
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</div> </td>
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</tr>
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<tr class="altColor" id="i2">
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<td class="colFirst"><code><a href="../../../javax/sound/sampled/LineEvent.Type.html" title="class in javax.sound.sampled">LineEvent.Type</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.html#getType--">getType</a></span>()</code>
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<div class="block">
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获取事件的类型。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i3">
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<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/LineEvent.html#toString--">toString</a></span>()</code>
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<div class="block">
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获取事件的字符串表示形式。
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</div> </td>
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</tr>
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</tbody>
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</table>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.util.EventObject">
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<!-- --> </a> <h3>Methods inherited from class java.util.<a href="../../../java/util/EventObject.html" title="class in java.util">EventObject</a></h3> <code><a href="../../../java/util/EventObject.html#getSource--">getSource</a></code></li>
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</ul>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
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<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../../java/lang/Object.html#clone--">clone</a>, <a href="../../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../../java/lang/Object.html#finalize--">finalize</a>, <a href="../../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../../java/lang/Object.html#notify--">notify</a>, <a href="../../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../../java/lang/Object.html#wait--">wait</a>, <a href="../../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../../java/lang/Object.html#wait-long-int-">wait</a></code></li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div>
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<div class="details">
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<ul class="blockList">
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<li class="blockList">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.detail">
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<!-- --> </a> <h3>构造方法详细信息</h3> <a name="LineEvent-javax.sound.sampled.Line-javax.sound.sampled.LineEvent.Type-long-">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>LineEvent</h4> <pre>public LineEvent(<a href="../../../javax/sound/sampled/Line.html" title="interface in javax.sound.sampled">Line</a> line,
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<a href="../../../javax/sound/sampled/LineEvent.Type.html" title="class in javax.sound.sampled">LineEvent.Type</a> type,
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long position)</pre>
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<div class="block">
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构造指定类型的新事件，源自指定的行。
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</div>
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<dl>
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<dt>
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<span class="paramLabel">参数</span>
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</dt>
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<dd>
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<code>line</code> - 此事件的来源
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</dd>
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<dd>
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<code>type</code> -事件类型（
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<code>OPEN</code> ，
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<code>CLOSE</code> ，
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<code>START</code> ，或
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<code>STOP</code> ）
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</dd>
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<dd>
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<code>position</code> - 发生事件时行已经处理的样本帧数，或
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<a href="../../../javax/sound/sampled/AudioSystem.html#NOT_SPECIFIED"><code>AudioSystem.NOT_SPECIFIED</code></a>
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</dd>
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<dt>
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<span class="throwsLabel">异常</span>
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</dt>
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<dd>
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<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果
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<code>line</code>是
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<code>null</code> 。
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</dd>
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</dl> </li>
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</ul> </li>
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</ul>
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<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.detail">
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<!-- --> </a> <h3>方法详细信息</h3> <a name="getLine--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getLine</h4> <pre>public final <a href="../../../javax/sound/sampled/Line.html" title="interface in javax.sound.sampled">Line</a> getLine()</pre>
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<div class="block">
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获取作为此事件的来源的音频线。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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负责此事的一线
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</dd>
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</dl> </li>
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</ul> <a name="getType--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getType</h4> <pre>public final <a href="../../../javax/sound/sampled/LineEvent.Type.html" title="class in javax.sound.sampled">LineEvent.Type</a> getType()</pre>
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<div class="block">
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获取事件的类型。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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此事件的类型（
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<a href="../../../javax/sound/sampled/LineEvent.Type.html#OPEN"><code>LineEvent.Type.OPEN</code></a> ，
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<a href="../../../javax/sound/sampled/LineEvent.Type.html#CLOSE"><code>LineEvent.Type.CLOSE</code></a> ，
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<a href="../../../javax/sound/sampled/LineEvent.Type.html#START"><code>LineEvent.Type.START</code></a> ，或
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<a href="../../../javax/sound/sampled/LineEvent.Type.html#STOP"><code>LineEvent.Type.STOP</code></a> ）
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</dd>
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</dl> </li>
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</ul> <a name="getFramePosition--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getFramePosition</h4> <pre>public final long getFramePosition()</pre>
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<div class="block">
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<span>当事件发生时，获取线路音频数据中的位置，以样本帧表示。</span>
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<span>例如，如果源线在暂停时已经播放了14个样本帧，则暂停事件将将线的位置报告为14.要处理的下一帧将是使用基于零的编号的帧号14，或15使用一个编号。</span>
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<p> <span>请注意，此字段仅与数据线生成的某些事件相关，例如<code>START</code>和<code>STOP</code> 。</span> <span>对于不计算样本帧的行生成的事件，以及对于此值不知道的任何其他事件，位置值应为<a href="../../../javax/sound/sampled/AudioSystem.html#NOT_SPECIFIED"><code>AudioSystem.NOT_SPECIFIED</code></a> 。</span> </p>
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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该行的位置作为示例帧号
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</dd>
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</dl> </li>
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</ul> <a name="toString--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>toString</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> toString()</pre>
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<div class="block">
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<span>获取事件的字符串表示形式。</span>
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<span>字符串的内容可能因Java Sound的实现而异。</span>
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</div>
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<dl>
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<dt>
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<span class="overrideSpecifyLabel">重写：</span>
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</dt>
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<dd>
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<code><a href="../../../java/util/EventObject.html#toString--">toString</a></code>在类别
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<code><a href="../../../java/util/EventObject.html" title="class in java.util">EventObject</a></code>
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</dd>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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描述事件的字符串。
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</dd>
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</dl> </li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div>
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</div> |