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MID Profile: Class Manager
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javax.microedition.media</FONT>
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Class Manager</H2>
<PRE>
<A HREF="../../../java/lang/Object.html">java.lang.Object</A>
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+--<B>javax.microedition.media.Manager</B>
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<DT>public final class <B>Manager</B><DT>extends <A HREF="../../../java/lang/Object.html">Object</A></DL>
<P>
<code>Manager</code> is the access point for obtaining system dependent resources such as <code>Players</code> for multimedia processing. <p> A <a href="Player.html"<code>Player</code></a> is an object used to control and render media that is specific to the <a href="#content-type">content type</a> of the data. <p> <code>Manager</code> provides access to an implementation specific mechanism for constructing <code>Players</code>. <p> For convenience, <code>Manager</code> also provides a simplified method to generate simple tones. <h2>Simple Tone Generation</h2> <blockquote> The <a href="#playTone(int, int, int)"> <code>playTone</code></a> function is defined to generate tones. Given the note and duration, the function will produce the specified tone. </blockquote> <h2>Creating Players</h2> <blockquote> <code>Manager</code> provides two methods to create a <code>Player</code> for playing back media: <ul> <li> Create from a media locator. <li> Create from an <code>InputStream</code>. </ul> The <code>Player</code> returned can be used to control the presentation of the media. </blockquote> <p> <a name="content-type"></a> <h2>Content Types</h2> <blockquote> Content types identify the type of media data. They are defined to be the registered MIME types (<a href= "http://www.iana.org/assignments/media-types/"> http://www.iana.org/assignments/media-types/</a>); plus some user-defined types that generally follow the MIME syntax (<a href="ftp://ftp.isi.edu/in-notes/rfc2045.txt">RFC 2045</a>, <a href="ftp://ftp.isi.edu/in-notes/rfc2046.txt">RFC 2046</a>). <p> For example, here are a few common content types: <ol> <li>Wave audio files: <code>audio/x-wav</code> <li>AU audio files: <code>audio/basic</code> <li>MP3 audio files: <code>audio/mpeg</code> <li>MIDI files: <code>audio/midi</code> <li>Tone sequences: <code>audio/x-tone-seq</code> </ol> </blockquote> <a name="media-locator"></a> <h2>Media Locator</h2> <blockquote> <a name="media-protocol"></a> Media locators are specified in <a href="http://www.ietf.org/rfc/rfc2396.txt">URI syntax</a> which is defined in the form: <p> <scheme>:<scheme-specific-part> <p> The "scheme" part of the locator string identifies the name of the protocol being used to deliver the data. </blockquote>
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<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/media/Player.html"><CODE>Player</CODE></A></DL>
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<CODE>static <A HREF="../../../java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#TONE_DEVICE_LOCATOR">TONE_DEVICE_LOCATOR</A></B></CODE>
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The locator to create a tone <code>Player</code> to play back tone sequences.</TD>
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<CODE>static <A HREF="../../../javax/microedition/media/Player.html">Player</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#createPlayer(java.io.InputStream, java.lang.String)">createPlayer</A></B>(<A HREF="../../../java/io/InputStream.html">InputStream</A> stream, <A HREF="../../../java/lang/String.html">String</A> type)</CODE>
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Create a <code>Player</code> to play back media from an <code>InputStream</code>.</TD>
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<CODE>static <A HREF="../../../javax/microedition/media/Player.html">Player</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#createPlayer(java.lang.String)">createPlayer</A></B>(<A HREF="../../../java/lang/String.html">String</A> locator)</CODE>
<BR>
Create a <code>Player</code> from an input locator.</TD>
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<CODE>static <A HREF="../../../java/lang/String.html">String</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#getSupportedContentTypes(java.lang.String)">getSupportedContentTypes</A></B>(<A HREF="../../../java/lang/String.html">String</A> protocol)</CODE>
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Return the list of supported content types for the given protocol.</TD>
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<CODE>static <A HREF="../../../java/lang/String.html">String</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#getSupportedProtocols(java.lang.String)">getSupportedProtocols</A></B>(<A HREF="../../../java/lang/String.html">String</A> content_type)</CODE>
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Return the list of supported protocols given the content type.</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/microedition/media/Manager.html#playTone(int, int, int)">playTone</A></B>(int note, int duration, int volume)</CODE>
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Play back a tone as specified by a note and its duration.</TD>
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