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<hr><h1>source_common.cpp</h1><a href="source__common_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025 
00026 <font class="preprocessor">#include "<a class="code" href="stdsound_8h.html">stdsound.h</a>"</font>
00027 
00028 <font class="preprocessor">#include "<a class="code" href="source__common_8h.html">source_common.h</a>"</font>
00029 
00030 
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00032 
00033 <font class="keyword">namespace </font>NLSOUND 
00034 {
00035 
<a name="l00036"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a0">00036</a> CSourceCommon::CSourceCommon(<a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>, <font class="keywordtype">bool</font> spawn, <a class="code" href="namespaceNLSOUND.html#a9">TSpawnEndCallback</a> cb, <font class="keywordtype">void</font> *cbUserParam)
00037 :       _Priority(<a class="code" href="namespaceNLSOUND.html#a82a12">MidPri</a>),
00038         _Playing(false),
00039         _Looping(false),
00040         _Position(CVector::Null),
00041         _Velocity(CVector::Null),
00042         _Direction(CVector::Null),
00043         _Gain(1.0f),
00044         _InitialGain(1.0f),
00045         _Pitch(1.0f),
00046         _RelativeMode(false),
00047         _3DPosition(NULL),
00048         _PlayStart(0),
00049         _Spawn(spawn),
00050         _SpawnEndCb(cb),
00051         _CbUserParam(cbUserParam)
00052 {
00053         CAudioMixerUser::instance()-&gt;addSource(<font class="keyword">this</font>);
00054 }
00055 
<a name="l00056"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a1">00056</a> CSourceCommon::~CSourceCommon()
00057 {
00058         CAudioMixerUser::instance()-&gt;removeSource(<font class="keyword">this</font>);
00059 }
00060 
00061 
00062 <font class="comment">/*</font>
00063 <font class="comment"> * Change the priority of the source</font>
00064 <font class="comment"> */</font>
<a name="l00065"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a3">00065</a> <font class="keywordtype">void</font> CSourceCommon::setPriority( <a class="code" href="namespaceNLSOUND.html#a82">TSoundPriority</a> pr)
00066 {
00067         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n0">_Priority</a> = pr;
00068 
00069         <font class="comment">// The AudioMixer redispatches as necessary in the update() function [PH]</font>
00070         <font class="comment">// Redispatch the tracks if needed</font>
00071         <font class="comment">//if ( redispatch )</font>
00072         <font class="comment">//{</font>
00073         <font class="comment">//      CAudioMixerUser::instance()-&gt;balanceSources();</font>
00074         <font class="comment">//}</font>
00075 }
00076 
00077 <font class="comment">/*</font>
00078 <font class="comment"> * Set looping on/off for future playbacks (default: off)</font>
00079 <font class="comment"> */</font>
<a name="l00080"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a5">00080</a> <font class="keywordtype">void</font>                                    CSourceCommon::setLooping( <font class="keywordtype">bool</font> <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a> )
00081 {
00082         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n2">_Looping</a> = <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>;
00083 }
00084 
00085 <font class="comment">/*</font>
00086 <font class="comment"> * Return the looping state</font>
00087 <font class="comment"> */</font>
<a name="l00088"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a6">00088</a> <font class="keywordtype">bool</font>                                    CSourceCommon::getLooping()<font class="keyword"> const</font>
00089 <font class="keyword"></font>{
00090         <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n2">_Looping</a>;
00091 }
00092 
00093 <font class="comment">/*</font>
00094 <font class="comment"> * Play</font>
00095 <font class="comment"> */</font>
<a name="l00096"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a7">00096</a> <font class="keywordtype">void</font>                                    CSourceCommon::play()
00097 {
00098         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n1">_Playing</a> = <font class="keyword">true</font>;
00099         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n10">_PlayStart</a> = CTime::getLocalTime();
00100 }
00101 
00102 <font class="comment">/*</font>
00103 <font class="comment"> * Stop playing</font>
00104 <font class="comment"> */</font>
<a name="l00105"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a8">00105</a> <font class="keywordtype">void</font>                                    CSourceCommon::stop()
00106 {
00107         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n1">_Playing</a> = <font class="keyword">false</font>;
00108 }
00109 
00110 <font class="comment">/* Set the position vector (default: (0,0,0)).</font>
00111 <font class="comment"> * 3D mode -&gt; 3D position</font>
00112 <font class="comment"> * st mode -&gt; x is the pan value (from left (-1) to right (1)), set y and z to 0</font>
00113 <font class="comment"> */</font>
<a name="l00114"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a10">00114</a> <font class="keywordtype">void</font>                                    CSourceCommon::setPos( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; pos )
00115 {
00116         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a> = pos;
00117 }
00118 
00119 <font class="comment">/* Get the position vector.</font>
00120 <font class="comment"> * If the source is stereo, return the position vector which reference was passed to set3DPositionVector()</font>
00121 <font class="comment"> */</font>
<a name="l00122"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a11">00122</a> <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &amp;CSourceCommon::getPos()<font class="keyword"> const</font>
00123 <font class="keyword"></font>{
00124         <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n11">_3DPosition</a> == NULL )
00125         {
00126                 <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a>;
00127         }
00128         <font class="keywordflow">else</font>
00129         {
00130                 <font class="keywordflow">return</font> *<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n11">_3DPosition</a>;
00131         }
00132         
00133 }
00134 
00135 <font class="comment">/* Shift the frequency. 1.0f equals identity, each reduction of 50% equals a pitch shift</font>
00136 <font class="comment"> * of one octave. 0 is not a legal value.</font>
00137 <font class="comment"> */</font>
<a name="l00138"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a27">00138</a> <font class="keywordtype">void</font>                                    CSourceCommon::setPitch( <font class="keywordtype">float</font> pitch )
00139 {
00140         <a class="code" href="debug_8h.html#a6">nlassert</a>( (pitch &gt; 0) &amp;&amp; (pitch &lt;= 1.0f ) );
00141         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n7">_Pitch</a> = pitch;
00142 }
00143 
00144 
00145 <font class="comment">/*</font>
00146 <font class="comment"> * Set the velocity vector (3D mode only, ignored in stereo mode) (default: (0,0,0))</font>
00147 <font class="comment"> */</font>
<a name="l00148"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a12">00148</a> <font class="keywordtype">void</font>                                    CSourceCommon::setVelocity( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; vel )
00149 {
00150         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n4">_Velocity</a> = vel;
00151 }
00152 
00153 <font class="comment">/*</font>
00154 <font class="comment"> * Set the direction vector (3D mode only, ignored in stereo mode) (default: (0,0,0) as non-directional)</font>
00155 <font class="comment"> */</font>
<a name="l00156"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a13">00156</a> <font class="keywordtype">void</font>                                    CSourceCommon::setDirection( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; dir )
00157 {
00158         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n5">_Direction</a> = dir;
00159 }
00160 
00161 <font class="comment">/* Set the gain (volume value inside [0 , 1]). (default: 1)</font>
00162 <font class="comment"> * 0.0 -&gt; silence</font>
00163 <font class="comment"> * 0.5 -&gt; -6dB</font>
00164 <font class="comment"> * 1.0 -&gt; no attenuation</font>
00165 <font class="comment"> * values &gt; 1 (amplification) not supported by most drivers</font>
00166 <font class="comment"> */</font>
<a name="l00167"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a14">00167</a> <font class="keywordtype">void</font>                                    CSourceCommon::setGain( <font class="keywordtype">float</font> gain )
00168 {
00169         <a class="code" href="debug_8h.html#a6">nlassert</a>( (gain &gt;= 0.0f) &amp;&amp; (gain &lt;= 1.0f ) );
00170         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n9">_InitialGain</a> = <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a> = gain;
00171 }
00172 
00173 <font class="comment">/* Set the gain amount (value inside [0, 1]) to map between 0 and the nominal gain</font>
00174 <font class="comment"> * (which is getSource()-&gt;getGain()). Does nothing if getSource() is null.</font>
00175 <font class="comment"> */</font>
<a name="l00176"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a15">00176</a> <font class="keywordtype">void</font>                                    CSourceCommon::setRelativeGain( <font class="keywordtype">float</font> gain )
00177 {
00178         <a class="code" href="debug_8h.html#a6">nlassert</a>( (gain &gt;= 0.0f) &amp;&amp; (gain &lt;= 1.0f ) );
00179 
00180         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a> = <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n9">_InitialGain</a> * gain;
00181 }
00182 
00183 <font class="comment">/*</font>
00184 <font class="comment"> * Return the relative gain (see setRelativeGain()), or the absolute gain if getSource() is null.</font>
00185 <font class="comment"> */</font>
<a name="l00186"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a16">00186</a> <font class="keywordtype">float</font>                                   CSourceCommon::getRelativeGain()<font class="keyword"> const</font>
00187 <font class="keyword"></font>{
00188         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n9">_InitialGain</a> == 0.0f)
00189                 <font class="keywordflow">return</font> 0.0f;
00190         <font class="keywordflow">else</font>
00191                 <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a> / <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n9">_InitialGain</a>;
00192 }
00193 
00194 <font class="comment">/*</font>
00195 <font class="comment"> * Set the source relative mode. If true, positions are interpreted relative to the listener position (default: false)</font>
00196 <font class="comment"> */</font>
<a name="l00197"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a17">00197</a> <font class="keywordtype">void</font>                                    CSourceCommon::setSourceRelativeMode( <font class="keywordtype">bool</font> mode )
00198 {
00199         <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n8">_RelativeMode</a> = mode;
00200 }
00201 
00202 
<a name="l00203"></a><a class="code" href="classNLSOUND_1_1CSourceCommon.html#a28">00203</a> uint32                                  CSourceCommon::getTime()
00204 {
00205         <font class="comment">// default implementation</font>
00206         <font class="keywordflow">return</font> <a class="code" href="memory__common_8h.html#a11">uint32</a>(CTime::getLocalTime() - <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n10">_PlayStart</a>);
00207 }
00208 
00209 
00210 } <font class="comment">// NLSOUND</font>
</pre></div>

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