mirror of
https://github.com/ENSL/NS.git
synced 2025-02-09 09:11:05 +00:00
75 lines
3.2 KiB
HTML
75 lines
3.2 KiB
HTML
<HTML>
|
|
<HEAD>
|
|
<META NAME="GENERATOR" Content="SOURCEDOC.EXE">
|
|
<META HTTP-EQUIV="Content-Type" content="text/html; charset=iso-8859-1">
|
|
<TITLE>FSOUND_GetCurrentLevels</TITLE>
|
|
<STYLE>
|
|
#flush {margin-left: -10p; margin-right: -0p}
|
|
#buttonbar {color: white}
|
|
</STYLE>
|
|
</HEAD>
|
|
<BODY TOPMARGIN=0 BGPROPERTIES="FIXED" BGCOLOR="white">
|
|
<FONT FACE="ARIAL">
|
|
<SPAN ID="flush">
|
|
<A NAME="SEE ALSO">
|
|
<TABLE WIDTH="100%" COLS=2 BORDER=0 BGCOLOR="#000000">
|
|
<TR ALIGN=RIGHT>
|
|
<TD ALIGN=LEFT>
|
|
<IMG SRC="banner03.gif" WIDTH="88" HEIGHT="31" BORDER=0>
|
|
</TD>
|
|
<TD ALIGN=RIGHT VALIGN=TOP>
|
|
<FONT FACE="ARIAL" SIZE="2">
|
|
<A ID=buttonbar HREF="FSOUND_GetCPUUsage.html">
|
|
<IMG SRC="u_prev.gif" WIDTH="71" HEIGHT="16" BORDER=0 ALT="Previous Topic">
|
|
</A>
|
|
<A ID=buttonbar HREF="FSOUND.html">
|
|
<IMG SRC="u_index.gif" WIDTH="47" HEIGHT="16" BORDER=0 ALT="Index">
|
|
</A>
|
|
<A ID=buttonbar HREF="FSOUND_GetCurrentPosition.html">
|
|
<IMG SRC="u_next.gif" WIDTH="48" HEIGHT="16" BORDER=0 ALT="Next Topic">
|
|
</A>
|
|
</FONT></TD><TD WIDTH=15></TD>
|
|
</TR>
|
|
</TABLE>
|
|
</A>
|
|
</SPAN>
|
|
<A HREF="FSOUND.html#Functions"><H5>[API function]</A></H5>
|
|
<H2><A NAME="FSOUND_GetCurrentLevels">FSOUND_GetCurrentLevels</A></H2>
|
|
Returns a left and right VU/Level reading at the current position of the specified channel.<BR>
|
|
Levels are are only supported for software channels.<BR>
|
|
<P>
|
|
<B>DLL_API signed char F_API </B><B> </B><B>FSOUND_GetCurrentLevels</B><B>(</B><BR>
|
|
<B>int </B><B> </B><I>channel</I><B>,</B><BR>
|
|
<B>F_FLOAT_API *</B><I>l</I><B>,</B><BR>
|
|
<B>F_FLOAT_API *</B><I>r</I><BR>
|
|
<B>);</B><BR>
|
|
<H3>Parameters</H3>
|
|
<TABLE>
|
|
<TR VALIGN=top><TD><I>channel</I></TD>
|
|
<TD>Channel number/handle to retrieve left and right level from.<BR>
|
|
</TD><TR VALIGN=top><TD><I>l</I></TD>
|
|
<TD>Pointer to a floating point value to store left level, between 0 and 1.<BR>
|
|
</TD><TR VALIGN=top><TD><I>r</I></TD>
|
|
<TD>Pointer to a floating point value to store right level, between 0 and 1.<BR>
|
|
</TD></TABLE>
|
|
<H3>Return Value</H3>
|
|
On success, TRUE is returned.<BR>
|
|
On failure, FALSE is returned.<BR>
|
|
<H3>Remarks</H3>
|
|
By default this function is only point sampled and not latency adjusted (it will appear to trigger ahead of when you hear the sound).<BR>
|
|
To fix this and get a 'perfect' set of levels in realtime, use FSOUND_INIT_ACCURATEVULEVELS with FSOUND_Init.<BR>
|
|
-------------------<BR>
|
|
To get an overall VU reading for all sounds, add all VU values for each channel together, and then clip at 1.0. <BR>
|
|
Another (harder) way is to write a dsp unit that reads from the mixbuffer being passed into it.<BR>
|
|
Note: A true 'VU' should be smoothed, but in case people were after more accuracy than a smoothed value, it was decided to return the raw amplitude, and let the user smooth the result in their own way.<BR>
|
|
___________________<BR>
|
|
Supported on the following platforms : Win32, WinCE, Linux, Macintosh, XBox, PlayStation 2, GameCube<BR>
|
|
<H3>See Also</H3>
|
|
<A HREF="FSOUND_GetAmplitude.html">FSOUND_GetAmplitude</A>
|
|
,
|
|
<A HREF="FSOUND_Init.html">FSOUND_Init</A>
|
|
<HR><BR><FONT SIZE="-2">This document copyright ©Firelight Technologies, Pty, Ltd, 1999-2002. All rights reserved.</FONT><BR>
|
|
<FONT SIZE="-2">Generated Thu Dec 15 17:31:29 2005
|
|
by SourceDoc v0.10, the automated source code documenter.</FONT><BR>
|
|
</BODY>
|
|
</HTML>
|