uTools-Manuals/docs/java/javax/sound/midi/MidiFileFormat.html

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     javax.sound.midi 
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<h2 class="title" title="Class MidiFileFormat">Class MidiFileFormat</h2>
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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>javax.sound.midi.MidiFileFormat</li>
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<hr/> <br/> <pre>public class <span class="typeNameLabel">MidiFileFormat</span>
extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></pre>
<div class="block">
<span>一个<code>MidiFileFormat</code>对象封装了一个MIDI文件的类型，以及它的长度和时间信息。</span>
<p> <span>一个<code>MidiFileFormat</code>对象可以包含一组属性。</span> <span>属性是一对键和值：键的类型为<code>String</code> ，相关属性值是任意对象。</span> <span>属性指定其他信息元数据（如作者或版权）。</span> <span>属性是可选信息，文件读取器和文件写入器实现不需要提供或识别属性。</span> </p>
<p> <span>下表列出了在实现中应该使用的一些常见属性：</span> </p>
<span> MIDI File Format Properties    Property key Value type Description   "author" <a href="../../../java/lang/String.html" title="class in java.lang"><code>String</code></a> name of the author of this file   "title" <a href="../../../java/lang/String.html" title="class in java.lang"><code>String</code></a> title of this file   "copyright" <a href="../../../java/lang/String.html" title="class in java.lang"><code>String</code></a> copyright message   "date" <a href="../../../java/util/Date.html" title="class in java.util"><code>Date</code></a> date of the recording or release   "comment" <a href="../../../java/lang/String.html" title="class in java.lang"><code>String</code></a> an arbitrary text  </span>
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<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiSystem.html#getMidiFileFormat-java.io.File-"><code>MidiSystem.getMidiFileFormat(java.io.File)</code></a> ， 
        <a href="../../../javax/sound/midi/Sequencer.html#setSequence-java.io.InputStream-"><code>Sequencer.setSequence(java.io.InputStream stream)</code></a>
</dd>
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<caption>
<span>Fields</span>
<span class="tabEnd"> </span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
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<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#byteLength">byteLength</a></span></code>
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              MIDI文件的长度（以字节为单位）。 
            </div> </td>
</tr>
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<td class="colFirst"><code>protected float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#divisionType">divisionType</a></span></code>
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              MIDI文件的分割类型。 
            </div> </td>
</tr>
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<td class="colFirst"><code>protected long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#microsecondLength">microsecondLength</a></span></code>
<div class="block">
              MIDI文件的持续时间（以微秒为单位）。 
            </div> </td>
</tr>
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<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#resolution">resolution</a></span></code>
<div class="block">
              MIDI文件的时间分辨率。 
            </div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#type">type</a></span></code>
<div class="block">
              MIDI文件的类型。 
            </div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#UNKNOWN_LENGTH">UNKNOWN_LENGTH</a></span></code>
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              代表未知长度。 
            </div> </td>
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<span>构造方法</span>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#MidiFileFormat-int-float-int-int-long-">MidiFileFormat</a></span>(int type, float divisionType, int resolution, int bytes, long microseconds)</code>
<div class="block">
              构造一个 
             <code>MidiFileFormat</code> 。 
            </div> </td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#MidiFileFormat-int-float-int-int-long-java.util.Map-">MidiFileFormat</a></span>(int type, float divisionType, int resolution, int bytes, long microseconds, <a href="../../../java/util/Map.html" title="interface in java.util">Map</a>&lt;<a href="../../../java/lang/String.html" title="class in java.lang">String</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; properties)</code>
<div class="block">
              构造一个 
             <code>MidiFileFormat</code>用一组属性。 
            </div> </td>
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</table> </li>
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<caption>
<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
<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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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getByteLength--">getByteLength</a></span>()</code>
<div class="block">
              获取MIDI文件的长度，以8位字节表示。 
            </div> </td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getDivisionType--">getDivisionType</a></span>()</code>
<div class="block">
              获取MIDI文件的时序分割类型。 
            </div> </td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getMicrosecondLength--">getMicrosecondLength</a></span>()</code>
<div class="block">
              获取MIDI文件的长度，以微秒表示。 
            </div> </td>
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<td class="colFirst"><code><a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getProperty-java.lang.String-">getProperty</a></span>(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> key)</code>
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              获取由密钥指定的属性值。 
            </div> </td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getResolution--">getResolution</a></span>()</code>
<div class="block">
              获取MIDI文件的时间分辨率。 
            </div> </td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#getType--">getType</a></span>()</code>
<div class="block">
              获取MIDI文件类型。 
            </div> </td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code><a href="../../../java/util/Map.html" title="interface in java.util">Map</a>&lt;<a href="../../../java/lang/String.html" title="class in java.lang">String</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/midi/MidiFileFormat.html#properties--">properties</a></span>()</code>
<div class="block">
              获取不可修改的属性地图。 
            </div> </td>
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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#toString--">toString</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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<li class="blockList"> <h4>UNKNOWN_LENGTH</h4> <pre>public static final int UNKNOWN_LENGTH</pre>
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            代表未知长度。 
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<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#getByteLength--"><code>getByteLength()</code></a> ， 
            <a href="../../../javax/sound/midi/MidiFileFormat.html#getMicrosecondLength--"><code>getMicrosecondLength()</code></a> ， 
            <a href="../../../constant-values.html#javax.sound.midi.MidiFileFormat.UNKNOWN_LENGTH">Constant Field Values</a>
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<li class="blockList"> <h4>type</h4> <pre>protected int type</pre>
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            MIDI文件的类型。 
          </div> </li>
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<li class="blockList"> <h4>divisionType</h4> <pre>protected float divisionType</pre>
<div class="block">
            MIDI文件的分割类型。 
          </div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/Sequence.html#PPQ"><code>Sequence.PPQ</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_24"><code>Sequence.SMPTE_24</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_25"><code>Sequence.SMPTE_25</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30DROP"><code>Sequence.SMPTE_30DROP</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30"><code>Sequence.SMPTE_30</code></a>
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</ul> <a name="resolution">
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<li class="blockList"> <h4>resolution</h4> <pre>protected int resolution</pre>
<div class="block">
            MIDI文件的时间分辨率。 
          </div> </li>
</ul> <a name="byteLength">
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<li class="blockList"> <h4>byteLength</h4> <pre>protected int byteLength</pre>
<div class="block">
            MIDI文件的长度（以字节为单位）。 
          </div> </li>
</ul> <a name="microsecondLength">
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<li class="blockList"> <h4>microsecondLength</h4> <pre>protected long microsecondLength</pre>
<div class="block">
            MIDI文件的持续时间（以微秒为单位）。 
          </div> </li>
</ul> </li>
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<li class="blockList"> <h4>MidiFileFormat</h4> <pre>public MidiFileFormat(int type,
                      float divisionType,
                      int resolution,
                      int bytes,
                      long microseconds)</pre>
<div class="block">
            构造一个 
           <code>MidiFileFormat</code> 。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>type</code> - MIDI文件类型（0，1或2） 
           </dd>
<dd>
<code>divisionType</code> - 时序分割类型（PPQ或SMPTE类型之一） 
           </dd>
<dd>
<code>resolution</code> - 时序分辨率 
           </dd>
<dd>
<code>bytes</code> - MIDI文件的长度（以字节为单位），如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dd>
<code>microseconds</code> - 文件的持续时间（以微秒为单位），如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#UNKNOWN_LENGTH"><code>UNKNOWN_LENGTH</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#PPQ"><code>Sequence.PPQ</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_24"><code>Sequence.SMPTE_24</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_25"><code>Sequence.SMPTE_25</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30DROP"><code>Sequence.SMPTE_30DROP</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30"><code>Sequence.SMPTE_30</code></a>
</dd>
</dl> </li>
</ul> <a name="MidiFileFormat-int-float-int-int-long-java.util.Map-">
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<ul class="blockListLast">
<li class="blockList"> <h4>MidiFileFormat</h4> <pre>public MidiFileFormat(int type,
                      float divisionType,
                      int resolution,
                      int bytes,
                      long microseconds,
                      <a href="../../../java/util/Map.html" title="interface in java.util">Map</a>&lt;<a href="../../../java/lang/String.html" title="class in java.lang">String</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; properties)</pre>
<div class="block">
            构造一个 
           <code>MidiFileFormat</code>用一组属性。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>type</code> - MIDI文件类型（0，1或2） 
           </dd>
<dd>
<code>divisionType</code> - 时序分割类型（PPQ或SMPTE类型之一） 
           </dd>
<dd>
<code>resolution</code> - 时序分辨率 
           </dd>
<dd>
<code>bytes</code> - MIDI文件的长度（以字节为单位），如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dd>
<code>microseconds</code> - 文件的持续时间（以微秒为单位），如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dd>
<code>properties</code> - 具有 
            <code>Map&lt;String,Object&gt;</code>对象 
           </dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
             1.5 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#UNKNOWN_LENGTH"><code>UNKNOWN_LENGTH</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#PPQ"><code>Sequence.PPQ</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_24"><code>Sequence.SMPTE_24</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_25"><code>Sequence.SMPTE_25</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30DROP"><code>Sequence.SMPTE_30DROP</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30"><code>Sequence.SMPTE_30</code></a>
</dd>
</dl> </li>
</ul> </li>
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<li class="blockList"> <h4>getType</h4> <pre>public int getType()</pre>
<div class="block">
            获取MIDI文件类型。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             文件的类型（0，1或2） 
           </dd>
</dl> </li>
</ul> <a name="getDivisionType--">
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<li class="blockList"> <h4>getDivisionType</h4> <pre>public float getDivisionType()</pre>
<div class="block">
            获取MIDI文件的时序分割类型。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             分区类型（PPQ或SMPTE类型之一） 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/Sequence.html#Sequence-float-int-"><code>Sequence.Sequence(float, int)</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#PPQ"><code>Sequence.PPQ</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_24"><code>Sequence.SMPTE_24</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_25"><code>Sequence.SMPTE_25</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30DROP"><code>Sequence.SMPTE_30DROP</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#SMPTE_30"><code>Sequence.SMPTE_30</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#getDivisionType--"><code>Sequence.getDivisionType()</code></a>
</dd>
</dl> </li>
</ul> <a name="getResolution--">
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<li class="blockList"> <h4>getResolution</h4> <pre>public int getResolution()</pre>
<div class="block">
<span>获取MIDI文件的时间分辨率。</span>
<span>如果分割类型为PPQ，则分辨率以每搏拍数为单位指定。</span>
<span>对于SMTPE时间，分辨率以帧为单位指定。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             每搏拍数（PPQ）或每帧（SMPTE） 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#getDivisionType--"><code>getDivisionType()</code></a> ， 
            <a href="../../../javax/sound/midi/Sequence.html#getResolution--"><code>Sequence.getResolution()</code></a>
</dd>
</dl> </li>
</ul> <a name="getByteLength--">
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<ul class="blockList">
<li class="blockList"> <h4>getByteLength</h4> <pre>public int getByteLength()</pre>
<div class="block">
            获取MIDI文件的长度，以8位字节表示。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             文件中的字节数，如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#UNKNOWN_LENGTH"><code>UNKNOWN_LENGTH</code></a>
</dd>
</dl> </li>
</ul> <a name="getMicrosecondLength--">
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<ul class="blockList">
<li class="blockList"> <h4>getMicrosecondLength</h4> <pre>public long getMicrosecondLength()</pre>
<div class="block">
            获取MIDI文件的长度，以微秒表示。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             文件的持续时间（以微秒为单位），如果不知道则为UNKNOWN_LENGTH 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/Sequence.html#getMicrosecondLength--"><code>Sequence.getMicrosecondLength()</code></a> ， 
            <a href="../../../javax/sound/midi/MidiFileFormat.html#getByteLength--"><code>getByteLength()</code></a> ， 
            <a href="../../../javax/sound/midi/MidiFileFormat.html#UNKNOWN_LENGTH"><code>UNKNOWN_LENGTH</code></a>
</dd>
</dl> </li>
</ul> <a name="properties--">
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<ul class="blockList">
<li class="blockList"> <h4>properties</h4> <pre>public <a href="../../../java/util/Map.html" title="interface in java.util">Map</a>&lt;<a href="../../../java/lang/String.html" title="class in java.lang">String</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; properties()</pre>
<div class="block">
<span>获取不可修改的属性地图。</span>
<span>属性的概念在<code>class description</code>进一步<a href="../../../javax/sound/midi/MidiFileFormat.html" title="javax.sound.midi中的类">解释</a> 。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
<span>一个<code>Map&lt;String,Object&gt;</code>所有属性的<code>Map&lt;String,Object&gt;</code>对象。</span>
<span>如果没有属性被识别，则返回空的地图。</span>
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
             1.5 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#getProperty-java.lang.String-"><code>getProperty(String)</code></a>
</dd>
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<ul class="blockListLast">
<li class="blockList"> <h4>getProperty</h4> <pre>public <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> getProperty(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> key)</pre>
<div class="block">
<span>获取由密钥指定的属性值。</span>
<span>属性的概念在<code>class description</code>中进一步<a href="../../../javax/sound/midi/MidiFileFormat.html" title="javax.sound.midi中的类">解释</a> 。</span>
<p> <span>如果未为特定文件格式定义指定的属性，则此方法返回<code>null</code> 。</span> </p>
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<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>key</code> - 所需财产的关键 
           </dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             具有指定键的属性的值，如果属性不存在， 
            <code>null</code> 。 
           </dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
             1.5 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/midi/MidiFileFormat.html#properties--"><code>properties()</code></a>
</dd>
</dl> </li>
</ul> </li>
</ul> </li>
</ul>
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