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<hr><h1>sound_driver_al.cpp</h1><a href="sound__driver__al_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="stdopenal_8h.html">stdopenal.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="buffer__al_8h.html">buffer_al.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="listener__al_8h.html">listener_al.h</a>"</font>
00030
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00032
00033
00034 <font class="keyword">namespace </font>NLSOUND {
00035
00036
00037 <font class="preprocessor">#ifdef EAX_AVAILABLE</font>
00038 <font class="preprocessor"></font><font class="comment">// EAXSet global function</font>
00039 EAXSet EAXSetProp = NULL;
00040
00041 <font class="comment">// EAXGet global function</font>
00042 EAXGet EAXGetProp = NULL;
00043 <font class="preprocessor">#endif</font>
00044 <font class="preprocessor"></font>
00045
00046 <font class="comment">// Currently, the OpenAL headers are different between Windows and Linux versions !</font>
00047 <font class="comment">// AL_INVALID_XXXX are part of the spec, though.</font>
00048 <font class="preprocessor">#ifdef NL_OS_UNIX</font>
00049 <font class="preprocessor"></font><font class="preprocessor">#define AL_INVALID_ENUM AL_ILLEGAL_ENUM </font>
00050 <font class="preprocessor"></font><font class="preprocessor">#define AL_INVALID_OPERATION AL_ILLEGAL_COMMAND </font>
00051 <font class="preprocessor"></font><font class="preprocessor">#endif</font>
00052 <font class="preprocessor"></font>
00053
00054 <font class="preprocessor">#ifdef NL_DEBUG</font>
00055 <font class="preprocessor"></font><font class="comment">// Test error in debug mode</font>
00056 <font class="keywordtype">void</font> <a class="code" href="sound__driver__al_8h.html#a0">TestALError</a>()
00057 {
00058 ALuint errcode = alGetError();
00059 <font class="keywordflow">switch</font>( errcode )
00060 {
00061 <font class="keywordflow">case</font> AL_NO_ERROR : <font class="keywordflow">break</font>;
00062 <font class="keywordflow">case</font> AL_INVALID_NAME : <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"OpenAL: Invalid name"</font> );
00063 <font class="keywordflow">case</font> AL_INVALID_ENUM : <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"OpenAL: Invalid enum"</font> );
00064 <font class="keywordflow">case</font> AL_INVALID_VALUE : <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"OpenAL: Invalid value"</font> );
00065 <font class="keywordflow">case</font> AL_INVALID_OPERATION : <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"OpenAL: Invalid operation"</font> );
00066 <font class="keywordflow">case</font> AL_OUT_OF_MEMORY : <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"OpenAL: Out of memory"</font> );
00067 <font class="comment">// alGetString( errcode ) seems to fail !</font>
00068 }
00069 }
00070 <font class="preprocessor">#endif</font>
00071 <font class="preprocessor"></font>
00072
<a name="l00073"></a><a class="code" href="sound__driver__al_8cpp.html#a0">00073</a> <font class="preprocessor">#define INITIAL_BUFFERS 8</font>
<a name="l00074"></a><a class="code" href="sound__driver__al_8cpp.html#a1">00074</a> <font class="preprocessor"></font><font class="preprocessor">#define INITIAL_SOURCES 8</font>
<a name="l00075"></a><a class="code" href="sound__driver__al_8cpp.html#a2">00075</a> <font class="preprocessor"></font><font class="preprocessor">#define BUFFER_ALLOC_RATE 8</font>
<a name="l00076"></a><a class="code" href="sound__driver__al_8cpp.html#a3">00076</a> <font class="preprocessor"></font><font class="preprocessor">#define SOURCE_ALLOC_RATE 8</font>
00077 <font class="preprocessor"></font>
<a name="l00078"></a><a class="code" href="sound__driver__al_8cpp.html#a4">00078</a> <font class="preprocessor">#define ROLLOFF_FACTOR_DEFAULT 1.0f</font>
00079 <font class="preprocessor"></font>
00080 <font class="comment">/*</font>
00081 <font class="comment"> * Sound driver instance creation</font>
00082 <font class="comment"> */</font>
00083 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00084 <font class="preprocessor"></font>
00085 __declspec(dllexport) ISoundDriver *NLSOUND_createISoundDriverInstance()
00086 {
00087 CSoundDriverAL *driver = <font class="keyword">new</font> CSoundDriverAL();
00088 driver->init();
00089 <font class="keywordflow">return</font> driver;
00090 }
00091
00092 __declspec(dllexport) <a class="code" href="types__nl_8h.html#a9">uint32</a> NLSOUND_interfaceVersion ()
00093 {
00094 <font class="keywordflow">return</font> ISoundDriver::InterfaceVersion;
00095 }
00096
00097 <font class="preprocessor">#elif defined (NL_OS_UNIX)</font>
00098 <font class="preprocessor"></font>
00099 <font class="keyword">extern</font> <font class="stringliteral">"C"</font>
00100 {
00101 ISoundDriver* NLSOUND_createISoundDriverInstance ()
00102 {
00103 CSoundDriverAL *driver = <font class="keyword">new</font> CSoundDriverAL();
00104 driver->init();
00105 <font class="keywordflow">return</font> driver;
00106 }
00107
00108 <a class="code" href="types__nl_8h.html#a9">uint32</a> NLSOUND_interfaceVersion ()
00109 {
00110 <font class="keywordflow">return</font> ISoundDriver::InterfaceVersion;
00111 }
00112 }
00113
00114 <font class="preprocessor">#endif // NL_OS_UNIX</font>
00115 <font class="preprocessor"></font>
00116
00117 <font class="comment">// The instance of the singleton</font>
<a name="l00118"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#r0">00118</a> CSoundDriverAL *CSoundDriverAL::_Instance = NULL;
00119
00120
00121 <font class="comment">/*</font>
00122 <font class="comment"> * Constructor</font>
00123 <font class="comment"> */</font>
<a name="l00124"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a0">00124</a> CSoundDriverAL::CSoundDriverAL() :
00125 ISoundDriver(), _NbExpBuffers( 0 ), _NbExpSources( 0 ), _RolloffFactor( 1.0f )
00126 {
00127 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#r0">_Instance</a> == NULL )
00128 {
00129 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#r0">_Instance</a> = <font class="keyword">this</font>;
00130 }
00131 <font class="keywordflow">else</font>
00132 {
00133 <a class="code" href="debug_8h.html#a3">nlerror</a>( <font class="stringliteral">"Sound driver singleton instanciated twice"</font> );
00134 }
00135 }
00136
00137
00138 <font class="comment">/*</font>
00139 <font class="comment"> * Destructor</font>
00140 <font class="comment"> */</font>
<a name="l00141"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a7">00141</a> CSoundDriverAL::~CSoundDriverAL()
00142 {
00143 <font class="comment">// Remove the allocated (but not exported) source and buffer names</font>
00144 alDeleteSources( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b6">compactAliveNames</a>( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>, alIsSource ), &*<a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>.begin() );
00145 alDeleteBuffers( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b6">compactAliveNames</a>( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o0">_Buffers</a>, alIsBuffer ), &*<a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o0">_Buffers</a>.begin() );
00146
00147 <font class="comment">// OpenAL exit</font>
00148 alutExit();
00149
00150 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#r0">_Instance</a> = NULL;
00151 }
00152
00153
00154 <font class="comment">/*</font>
00155 <font class="comment"> * Initialization</font>
00156 <font class="comment"> */</font>
<a name="l00157"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a1">00157</a> <font class="keywordtype">bool</font> CSoundDriverAL::init()
00158 {
00159 <font class="comment">// OpenAL initialization</font>
00160 alutInit( NULL, NULL );
00161
00162 <font class="comment">// Display version information</font>
00163 <font class="keyword">const</font> ALubyte *alversion, *alrenderer, *alvendor, *alext;
00164 alversion = alGetString( AL_VERSION );
00165 alrenderer = alGetString( AL_RENDERER );
00166 alvendor = alGetString( AL_VENDOR );
00167 alext = alGetString( AL_EXTENSIONS );
00168 <a class="code" href="sound__driver__al_8h.html#a0">TestALError</a>();
00169 <a class="code" href="debug_8h.html#a1">nlinfo</a>( <font class="stringliteral">"Loading OpenAL lib: %s, %s, %s"</font>, alversion, alrenderer, alvendor );
00170 <a class="code" href="debug_8h.html#a1">nlinfo</a>( <font class="stringliteral">"Listing extensions: %s"</font>, alext );
00171
00172 <font class="preprocessor">#ifdef EAX_AVAILABLE</font>
00173 <font class="preprocessor"></font> <font class="comment">// Set EAX environment if EAX is available</font>
00174 <font class="keywordflow">if</font> ( alIsExtensionPresent((ALubyte *)<font class="stringliteral">"EAX"</font>) == AL_TRUE ) <font class="comment">// or EAX2.0</font>
00175 {
00176 <a class="code" href="debug_8h.html#a1">nlinfo</a>( <font class="stringliteral">"Initializing EAX"</font> );
00177 EAXSetProp = (EAXSet)alGetProcAddress((ALubyte*)<font class="stringliteral">"EAXSet"</font>);
00178 EAXGetProp = (EAXGet)alGetProcAddress((ALubyte*)<font class="stringliteral">"EAXGet"</font>);
00179 <font class="keywordflow">if</font> ( EAXSetProp != NULL )
00180 {
00181 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> ulEAXVal;
00182 <font class="keywordtype">long</font> lGlobalReverb;
00183 lGlobalReverb = 0;
00184 EAXSetProp( &DSPROPSETID_EAX_ListenerProperties, DSPROPERTY_EAXLISTENER_ROOM, 0, &lGlobalReverb, <font class="keyword">sizeof</font>(<font class="keywordtype">unsigned</font> <font class="keywordtype">long</font>) );
00185 ulEAXVal = EAX_ENVIRONMENT_GENERIC;
00186 EAXSetProp( &DSPROPSETID_EAX_ListenerProperties, DSPROPERTY_EAXLISTENER_ENVIRONMENT, 0, &ulEAXVal, <font class="keyword">sizeof</font>(<font class="keywordtype">unsigned</font> <font class="keywordtype">long</font>) );
00187 }
00188 }
00189 <font class="keywordflow">else</font>
00190 <font class="preprocessor">#endif</font>
00191 <font class="preprocessor"></font> {
00192 <a class="code" href="debug_8h.html#a1">nlinfo</a>( <font class="stringliteral">"EAX not available"</font> );
00193 }
00194
00195 <font class="comment">// Choose the I3DL2 model (same as DirectSound3D)</font>
00196 alDistanceModel( AL_INVERSE_DISTANCE_CLAMPED );
00197 <a class="code" href="sound__driver__al_8h.html#a0">TestALError</a>();
00198
00199 <font class="comment">// Initial buffers and sources allocation</font>
00200 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b4">allocateNewItems</a>( alGenBuffers, alIsBuffer, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o0">_Buffers</a>, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o2">_NbExpBuffers</a>, <a class="code" href="sound__driver__al_8cpp.html#a0">INITIAL_BUFFERS</a> );
00201 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b4">allocateNewItems</a>( alGenSources, alIsSource, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o3">_NbExpSources</a>, <a class="code" href="sound__driver__al_8cpp.html#a1">INITIAL_SOURCES</a> );
00202
00203 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00204 }
00205
00206
00207 <font class="comment">/*</font>
00208 <font class="comment"> * Allocate nb new items</font>
00209 <font class="comment"> */</font>
<a name="l00210"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b4">00210</a> <font class="keywordtype">void</font> CSoundDriverAL::allocateNewItems( <a class="code" href="namespaceNLSOUND.html#a12">TGenFunctionAL</a> algenfunc, <a class="code" href="namespaceNLSOUND.html#a13">TTestFunctionAL</a> altestfunc,
00211 vector<ALuint>& names, <a class="code" href="types__nl_8h.html#a13">uint</a> <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>, <a class="code" href="types__nl_8h.html#a13">uint</a> nb )
00212 {
00213 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> == names.size() );
00214 names.resize( <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> + nb );
00215 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b5">generateItems</a>( algenfunc, altestfunc, nb, &(names[<a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>]) );
00216 }
00217
00218
00219 <font class="comment">/*</font>
00220 <font class="comment"> * throwGenException</font>
00221 <font class="comment"> */</font>
00222 <font class="keywordtype">void</font> <a class="code" href="namespaceNLSOUND.html#a48">ThrowGenException</a>( <a class="code" href="namespaceNLSOUND.html#a12">TGenFunctionAL</a> algenfunc )
00223 {
00224 <font class="keywordflow">if</font> ( algenfunc == alGenBuffers )
00225 <font class="keywordflow">throw</font> ESoundDriverGenBuf();
00226 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ( algenfunc == alGenSources )
00227 <font class="keywordflow">throw</font> ESoundDriverGenSrc();
00228 <font class="keywordflow">else</font>
00229 <a class="code" href="debug_8h.html#a12">nlstop</a>;
00230 }
00231
00232 <font class="comment">/*</font>
00233 <font class="comment"> * Generate nb buffers/sources</font>
00234 <font class="comment"> */</font>
<a name="l00235"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b5">00235</a> <font class="keywordtype">void</font> CSoundDriverAL::generateItems( <a class="code" href="namespaceNLSOUND.html#a12">TGenFunctionAL</a> algenfunc, <a class="code" href="namespaceNLSOUND.html#a13">TTestFunctionAL</a> altestfunc, <a class="code" href="types__nl_8h.html#a13">uint</a> nb, ALuint *array )
00236 {
00237 algenfunc( nb, array );
00238
00239 <font class="comment">// Error handling</font>
00240 <font class="keywordflow">if</font> ( alGetError() != AL_NO_ERROR )
00241 {
00242 <a class="code" href="namespaceNLSOUND.html#a48">ThrowGenException</a>( algenfunc );
00243 }
00244
00245 <font class="comment">// Check buffers</font>
00246 <a class="code" href="types__nl_8h.html#a13">uint</a> i;
00247 <font class="keywordflow">for</font> ( i=0; i!=nb; i++ )
00248 {
00249 <font class="keywordflow">if</font> ( ! altestfunc( array[i] ) )
00250 {
00251 <a class="code" href="namespaceNLSOUND.html#a48">ThrowGenException</a>( algenfunc );
00252 }
00253 }
00254 }
00255
00256
00257 <font class="comment">/*</font>
00258 <font class="comment"> * Create a sound buffer</font>
00259 <font class="comment"> */</font>
<a name="l00260"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a2">00260</a> IBuffer *CSoundDriverAL::createBuffer()
00261 {
00262 <font class="keywordflow">return</font> <font class="keyword">new</font> CBufferAL( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b7">createItem</a>( alGenBuffers, alIsBuffer, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o0">_Buffers</a>, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o2">_NbExpBuffers</a>, <a class="code" href="sound__driver__al_8cpp.html#a2">BUFFER_ALLOC_RATE</a> ) );
00263 }
00264
00265
00266 <font class="comment">/*</font>
00267 <font class="comment"> * Create a source</font>
00268 <font class="comment"> */</font>
<a name="l00269"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a4">00269</a> ISource *CSoundDriverAL::createSource()
00270 {
00271 CSourceAL *sourceal = <font class="keyword">new</font> CSourceAL( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b7">createItem</a>( alGenSources, alIsSource, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o3">_NbExpSources</a>, <a class="code" href="sound__driver__al_8cpp.html#a3">SOURCE_ALLOC_RATE</a> ) );
00272 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o4">_RolloffFactor</a> != <a class="code" href="sound__driver__al_8cpp.html#a4">ROLLOFF_FACTOR_DEFAULT</a> )
00273 {
00274 alSourcef( sourceal->sourceName(), AL_ROLLOFF_FACTOR, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o4">_RolloffFactor</a> );
00275 }
00276 <font class="keywordflow">return</font> sourceal;
00277 }
00278
00279
00280 <font class="comment">/*</font>
00281 <font class="comment"> * Create a sound buffer or a sound source</font>
00282 <font class="comment"> */</font>
<a name="l00283"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b7">00283</a> ALuint CSoundDriverAL::createItem( <a class="code" href="namespaceNLSOUND.html#a12">TGenFunctionAL</a> algenfunc, <a class="code" href="namespaceNLSOUND.html#a13">TTestFunctionAL</a> altestfunc,
00284 vector<ALuint>& names, <a class="code" href="types__nl_8h.html#a13">uint</a>& <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>, <a class="code" href="types__nl_8h.html#a13">uint</a> allocrate )
00285 {
00286 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> <= names.size() );
00287 <font class="keywordflow">if</font> ( <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> == names.size() )
00288 {
00289 <font class="comment">// Generate new items</font>
00290 <a class="code" href="types__nl_8h.html#a13">uint</a> nbalive = <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b6">compactAliveNames</a>( names, altestfunc );
00291 <font class="keywordflow">if</font> ( nbalive == names.size() )
00292 {
00293 <font class="comment">// Extend vector of names</font>
00294 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b4">allocateNewItems</a>( algenfunc, altestfunc, names, <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>, allocrate );
00295 }
00296 <font class="keywordflow">else</font>
00297 {
00298 <font class="comment">// Take the room of the deleted names</font>
00299 <a class="code" href="debug_8h.html#a6">nlassert</a>( nbalive < names.size() );
00300 <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> = nbalive;
00301 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b5">generateItems</a>( algenfunc, altestfunc, names.size() - nbalive, &(names[nbalive]) );
00302 }
00303 }
00304
00305 <font class="comment">// Return the name of the item</font>
00306 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a> < names.size() );
00307 ALuint itemname = names[<a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>];
00308 <a class="code" href="driver__opengl__extension__def_8h.html#a225">index</a>++;
00309 <font class="keywordflow">return</font> itemname;
00310 }
00311
00312
00313 <font class="comment">/*</font>
00314 <font class="comment"> * Remove names of deleted buffers and return the number of valid buffers</font>
00315 <font class="comment"> */</font>
<a name="l00316"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b6">00316</a> <a class="code" href="types__nl_8h.html#a13">uint</a> CSoundDriverAL::compactAliveNames( vector<ALuint>& names, <a class="code" href="namespaceNLSOUND.html#a13">TTestFunctionAL</a> altestfunc )
00317 {
00318 vector<ALuint>::iterator iball, ibcompacted;
00319 <font class="keywordflow">for</font> ( iball=names.begin(), ibcompacted=names.begin(); iball!=names.end(); ++iball )
00320 {
00321 <font class="comment">// iball is incremented every iteration</font>
00322 <font class="comment">// ibcompacted is not incremented if a buffer is not valid anymore</font>
00323 <font class="keywordflow">if</font> ( altestfunc( *iball ) )
00324 {
00325 *ibcompacted = *iball;
00326 ++ibcompacted;
00327 }
00328 }
00329 <a class="code" href="debug_8h.html#a6">nlassert</a>( ibcompacted <= names.end() );
00330 <font class="keywordflow">return</font> ibcompacted - names.begin();
00331 }
00332
00333
00334 <font class="comment">/*</font>
00335 <font class="comment"> * Remove a buffer</font>
00336 <font class="comment"> */</font>
<a name="l00337"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b2">00337</a> <font class="keywordtype">void</font> CSoundDriverAL::removeBuffer( IBuffer *buffer )
00338 {
00339 <a class="code" href="debug_8h.html#a6">nlassert</a>( buffer != NULL );
00340 CBufferAL *bufferAL = dynamic_cast<CBufferAL*>(buffer);
00341 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b8">deleteItem</a>( bufferAL->bufferName(), alDeleteBuffers, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o0">_Buffers</a> ) )
00342 {
00343 <a class="code" href="debug_8h.html#a2">nlwarning</a>( <font class="stringliteral">"Deleting buffer: name not found"</font> );
00344 }
00345 }
00346
00347
00348 <font class="comment">/*</font>
00349 <font class="comment"> * Remove a source</font>
00350 <font class="comment"> */</font>
<a name="l00351"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b3">00351</a> <font class="keywordtype">void</font> CSoundDriverAL::removeSource( ISource *source )
00352 {
00353 <a class="code" href="debug_8h.html#a6">nlassert</a>( source != NULL );
00354 CSourceAL *sourceAL = dynamic_cast<CSourceAL*>(source);
00355 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b8">deleteItem</a>( sourceAL->sourceName(), alDeleteSources, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a> ) )
00356 {
00357 <a class="code" href="debug_8h.html#a2">nlwarning</a>( <font class="stringliteral">"Deleting source: name not found"</font> );
00358 }
00359 }
00360
00361
00362 <font class="comment">/*</font>
00363 <font class="comment"> * Delete a buffer or a source</font>
00364 <font class="comment"> */</font>
<a name="l00365"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#b8">00365</a> <font class="keywordtype">bool</font> CSoundDriverAL::deleteItem( ALuint name, <a class="code" href="namespaceNLSOUND.html#a12">TGenFunctionAL</a> aldeletefunc, vector<ALuint>& names )
00366 {
00367 vector<ALuint>::iterator ibn = find( names.begin(), names.end(), name );
00368 <font class="keywordflow">if</font> ( ibn == names.end() )
00369 {
00370 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00371 }
00372 aldeletefunc( 1, &*ibn );
00373 *ibn = AL_NONE;
00374 <a class="code" href="sound__driver__al_8h.html#a0">TestALError</a>();
00375 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00376 }
00377
00378
00379 <font class="comment">/*</font>
00380 <font class="comment"> * Create the listener instance</font>
00381 <font class="comment"> */</font>
<a name="l00382"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a3">00382</a> IListener *CSoundDriverAL::createListener()
00383 {
00384 <a class="code" href="debug_8h.html#a6">nlassert</a>( CListenerAL::instance() == NULL );
00385 <font class="keywordflow">return</font> <font class="keyword">new</font> CListenerAL();
00386 }
00387
00388
00389 <font class="comment">/*</font>
00390 <font class="comment"> * Apply changes of rolloff factor to all sources</font>
00391 <font class="comment"> */</font>
<a name="l00392"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a5">00392</a> <font class="keywordtype">void</font> CSoundDriverAL::applyRolloffFactor( <font class="keywordtype">float</font> f )
00393 {
00394 <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o4">_RolloffFactor</a> = f;
00395 vector<ALuint>::iterator ibn;
00396 <font class="keywordflow">for</font> ( ibn=<a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>.begin(); ibn!=<a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o1">_Sources</a>.end(); ++ibn )
00397 {
00398 alSourcef( *ibn, AL_ROLLOFF_FACTOR, <a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#o4">_RolloffFactor</a> );
00399 }
00400 <a class="code" href="sound__driver__al_8h.html#a0">TestALError</a>();
00401 }
00402
00403
00404 <font class="comment">/*</font>
00405 <font class="comment"> * Helper for loadWavFile()</font>
00406 <font class="comment"> */</font>
00407 <a class="code" href="namespaceNLSOUND.html#a51">TSampleFormat</a> <a class="code" href="namespaceNLSOUND.html#a49">ALtoNLSoundFormat</a>( ALenum alformat )
00408 {
00409 <font class="keywordflow">switch</font> ( alformat )
00410 {
00411 <font class="keywordflow">case</font> AL_FORMAT_MONO8 : <font class="keywordflow">return</font> <a class="code" href="namespaceNLSOUND.html#a51a8">Mono8</a>;
00412 <font class="keywordflow">case</font> AL_FORMAT_MONO16 : <font class="keywordflow">return</font> <a class="code" href="namespaceNLSOUND.html#a51a9">Mono16</a>;
00413 <font class="keywordflow">case</font> AL_FORMAT_STEREO8 : <font class="keywordflow">return</font> <a class="code" href="namespaceNLSOUND.html#a51a10">Stereo8</a>;
00414 <font class="keywordflow">case</font> AL_FORMAT_STEREO16 : <font class="keywordflow">return</font> <a class="code" href="namespaceNLSOUND.html#a51a11">Stereo16</a>;
00415 <font class="keywordflow">default</font> : <a class="code" href="debug_8h.html#a12">nlstop</a>; <font class="keywordflow">return</font> <a class="code" href="namespaceNLSOUND.html#a51a8">Mono8</a>;
00416 }
00417 }
00418
00419
00420 <font class="comment">/*</font>
00421 <font class="comment"> * Temp</font>
00422 <font class="comment"> */</font>
<a name="l00423"></a><a class="code" href="classNLSOUND_1_1CSoundDriverAL.html#a6">00423</a> <font class="keywordtype">bool</font> CSoundDriverAL::loadWavFile( IBuffer *destbuffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *filename )
00424 {
00425 <font class="comment">// Currently, the OpenAL UT headers are different between Windows and Linux versions</font>
00426 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00427 <font class="preprocessor"></font> ALsizei <a class="code" href="lexlang_8cpp.html#a56">size</a>,freq;
00428 ALenum <a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>;
00429 ALvoid *<a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>;
00430 ALboolean loop;
00431 alutLoadWAVFile( const_cast<char*>(filename), &<a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>, &<a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>, &<a class="code" href="lexlang_8cpp.html#a56">size</a>, &freq, &loop ); <font class="comment">// last arg in some al.h</font>
00432 <font class="preprocessor">#else</font>
00433 <font class="preprocessor"></font> ALsizei bits;
00434 ALsizei <a class="code" href="lexlang_8cpp.html#a56">size</a>,freq;
00435 ALsizei <a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>;
00436 ALvoid *<a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>;
00437 alutLoadWAV( const_cast<char*>(filename), &<a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>, &<a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>, &<a class="code" href="lexlang_8cpp.html#a56">size</a>, &bits, &freq );
00438 <font class="preprocessor">#endif</font>
00439 <font class="preprocessor"></font> <font class="keywordflow">if</font> ( <a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a> == NULL )
00440 {
00441 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00442 }
00443 destbuffer->setFormat( <a class="code" href="namespaceNLSOUND.html#a49">ALtoNLSoundFormat</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>), freq );
00444 destbuffer->fillBuffer( <a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>, <a class="code" href="lexlang_8cpp.html#a56">size</a> );
00445 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00446 <font class="preprocessor"></font> alutUnloadWAV(<a class="code" href="driver__opengl__extension__def_8h.html#a259">format</a>,<a class="code" href="driver__opengl__extension__def_8h.html#a255">data</a>,<a class="code" href="lexlang_8cpp.html#a56">size</a>,freq); <font class="comment">// Where is it on Linux ?!?</font>
00447 <font class="preprocessor">#endif</font>
00448 <font class="preprocessor"></font> <font class="keywordflow">return</font> <font class="keyword">true</font>;
00449 }
00450
00451
00452 } <font class="comment">// NLSOUND</font>
</pre></div>
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