audioengine.html

JAVA多媒体开发类库说明

<PRE>
public <B>AudioEngine</B>(<A HREF="../../../../javax/media/j3d/PhysicalEnvironment.html" title="class in javax.media.j3d">PhysicalEnvironment</A>&nbsp;physicalEnvironment)</PRE>
<DL>
<DD>Construct a new AudioEngine with the specified P.E.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>physicalEnvironment</CODE> - the physical environment object where we
 want access to this device.</DL>
</DL>

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<B>Method Detail</B></FONT></TH>
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<A NAME="initialize()"><!-- --></A><H3>
initialize</H3>
<PRE>
public abstract boolean <B>initialize</B>()</PRE>
<DL>
<DD>Code to initialize the device
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#initialize()">initialize</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>flag: true is initialized sucessfully, false if error</DL>
</DD>
</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public abstract boolean <B>close</B>()</PRE>
<DL>
<DD>Code to close the device
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>flag: true is closed sucessfully, false if error</DL>
</DD>
</DL>
<HR>

<A NAME="setAudioPlaybackType(int)"><!-- --></A><H3>
setAudioPlaybackType</H3>
<PRE>
public void <B>setAudioPlaybackType</B>(int&nbsp;type)</PRE>
<DL>
<DD>Set Type of Audio Playback physical transducer(s) sound is output to.
     Valid types are HEADPHONE, MONO_SPEAKER, STEREO_SPEAKERS
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#setAudioPlaybackType(int)">setAudioPlaybackType</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>type</CODE> - of audio output device</DL>
</DD>
</DL>
<HR>

<A NAME="getAudioPlaybackType()"><!-- --></A><H3>
getAudioPlaybackType</H3>
<PRE>
public int <B>getAudioPlaybackType</B>()</PRE>
<DL>
<DD>Get Type of Audio Playback Output Device
 returns audio playback type to which sound is currently output
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getAudioPlaybackType()">getAudioPlaybackType</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>audio playback type</DL>
</DD>
</DL>
<HR>

<A NAME="setCenterEarToSpeaker(float)"><!-- --></A><H3>
setCenterEarToSpeaker</H3>
<PRE>
public void <B>setCenterEarToSpeaker</B>(float&nbsp;distance)</PRE>
<DL>
<DD>Set Distance from the Center Ear to a Speaker
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#setCenterEarToSpeaker(float)">setCenterEarToSpeaker</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>distance</CODE> - from the center ear and to the speaker</DL>
</DD>
</DL>
<HR>

<A NAME="getCenterEarToSpeaker()"><!-- --></A><H3>
getCenterEarToSpeaker</H3>
<PRE>
public float <B>getCenterEarToSpeaker</B>()</PRE>
<DL>
<DD>Get Distance from Ear to Speaker
 returns value set as distance from listener's ear to speaker
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getCenterEarToSpeaker()">getCenterEarToSpeaker</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>distance from interaural midpoint between the ears to closest speaker</DL>
</DD>
</DL>
<HR>

<A NAME="setAngleOffsetToSpeaker(float)"><!-- --></A><H3>
setAngleOffsetToSpeaker</H3>
<PRE>
public void <B>setAngleOffsetToSpeaker</B>(float&nbsp;angle)</PRE>
<DL>
<DD>Set Angle Offset To Speaker
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#setAngleOffsetToSpeaker(float)">setAngleOffsetToSpeaker</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>angle</CODE> - in radian between head coordinate Z axis and vector to speaker</DL>
</DD>
</DL>
<HR>

<A NAME="getAngleOffsetToSpeaker()"><!-- --></A><H3>
getAngleOffsetToSpeaker</H3>
<PRE>
public float <B>getAngleOffsetToSpeaker</B>()</PRE>
<DL>
<DD>Get Angle Offset To Speaker
 returns value set as angle between vector to speaker and Z head axis
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getAngleOffsetToSpeaker()">getAngleOffsetToSpeaker</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>angle in radians from head Z axis and vector from center ear to speaker</DL>
</DD>
</DL>
<HR>

<A NAME="getTotalChannels()"><!-- --></A><H3>
getTotalChannels</H3>
<PRE>
public int <B>getTotalChannels</B>()</PRE>
<DL>
<DD>Query total number of channels available for sound rendering
 for this audio device.
 returns number of maximum sound channels you can run with this
 library/device-driver.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getTotalChannels()">getTotalChannels</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>total number of channels that can be used for this audio device</DL>
</DD>
</DL>
<HR>

<A NAME="getChannelsAvailable()"><!-- --></A><H3>
getChannelsAvailable</H3>
<PRE>
public int <B>getChannelsAvailable</B>()</PRE>
<DL>
<DD>Query number of channels currently available for use by the
 returns number of sound channels currently available (number
 not being used by active sounds.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getChannelsAvailable()">getChannelsAvailable</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>total number of channels current available</DL>
</DD>
</DL>
<HR>

<A NAME="getChannelsUsedForSound(javax.media.j3d.Sound)"><!-- --></A><H3>
getChannelsUsedForSound</H3>
<PRE>
public int <B>getChannelsUsedForSound</B>(<A HREF="../../../../javax/media/j3d/Sound.html" title="class in javax.media.j3d">Sound</A>&nbsp;sound)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>This method is now part of the Sound class</I>
<P>
<DD>Query number of channels that would be used to render a particular
 sound node.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html#getChannelsUsedForSound(javax.media.j3d.Sound)">getChannelsUsedForSound</A></CODE> in interface <CODE><A HREF="../../../../javax/media/j3d/AudioDevice.html" title="interface in javax.media.j3d">AudioDevice</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sound</CODE> - refenence to sound node that query to be performed on
 returns number of sound channels used by a specific Sound node
<DT><B>Returns:</B><DD>number of channels a particular Sound node is using or would used
 if enabled and activated (rendered).</DL>
</DD>
</DL>
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