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<hr><h1>source_dsound.cpp</h1><a href="source__dsound_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 
00027 <font class="preprocessor">#include "<a class="code" href="stddsound_8h.html">stddsound.h</a>"</font>
00028 <font class="preprocessor">#include "<a class="code" href="source__dsound_8h.html">source_dsound.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="sound__driver__dsound_8h.html">sound_driver_dsound.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="buffer__dsound_8h.html">buffer_dsound.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="listener__dsound_8h.html">listener_dsound.h</a>"</font>
00032 
00033 
00034 
00035 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00036 
00037 
00038 <font class="keyword">namespace </font>NLSOUND {
00039 
00040 
00041 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00042 <font class="preprocessor"></font>
00043 <font class="preprocessor">        #define INITTIME(_var)   TTicks _var = CTime::getPerformanceTime()</font>
00044 <font class="preprocessor"></font>
00045 <font class="preprocessor">        #define DEBUG_POSITIONS  1</font>
00046 <font class="preprocessor"></font>
00047 <font class="preprocessor">        #if DEBUG_POSITIONS</font>
00048 <font class="preprocessor"></font><font class="preprocessor">        #define DBGPOS(_a) nldebug ## _a</font>
00049 <font class="preprocessor"></font><font class="preprocessor">        #else</font>
00050 <font class="preprocessor"></font><font class="preprocessor">        #define DBGPOS(_a) </font>
00051 <font class="preprocessor"></font><font class="preprocessor">        #endif</font>
00052 <font class="preprocessor"></font>
00053 <font class="preprocessor">#else</font>
<a name="l00054"></a><a class="code" href="source__dsound_8cpp.html#a0">00054</a> <font class="preprocessor"></font><font class="preprocessor">        #define INITTIME(_var)</font>
<a name="l00055"></a><a class="code" href="source__dsound_8cpp.html#a1">00055</a> <font class="preprocessor"></font><font class="preprocessor">        #define DBGPOS(_a) </font>
00056 <font class="preprocessor"></font><font class="preprocessor">#endif</font>
00057 <font class="preprocessor"></font>
00058 
00059 
<a name="l00060"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">00060</a> uint32 CSourceDSound::_SecondaryBufferSize = 65536;
<a name="l00061"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r1">00061</a> uint32 CSourceDSound::_SwapCopySize = 32768;
<a name="l00062"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">00062</a> uint32 CSourceDSound::_UpdateCopySize = 16384;
<a name="l00063"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r5">00063</a> uint32 CSourceDSound::_XFadeSize = 64;
<a name="l00064"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r2">00064</a> uint CSourceDSound::_DefaultChannels = 1;
<a name="l00065"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r3">00065</a> uint CSourceDSound::_DefaultSampleRate = 22050;
<a name="l00066"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#r4">00066</a> uint CSourceDSound::_DefaultSampleSize = 16;
00067 
00068 
00069 
<a name="l00070"></a><a class="code" href="source__dsound_8cpp.html#a2">00070</a> <font class="preprocessor">#define NLSOUND_MIN(_a,_b)        (((_a) &lt; (_b)) ? (_a) : (_b))</font>
<a name="l00071"></a><a class="code" href="source__dsound_8cpp.html#a3">00071</a> <font class="preprocessor"></font><font class="preprocessor">#define NLSOUND_DISTANCE(_from, _to, _period)   (((_to) &gt; (_from)) ? (_to) - (_from) : (_period) + (_to) - (_from))</font>
00072 <font class="preprocessor"></font>
00073 
00074 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00075 <font class="preprocessor"></font>
00076 <font class="comment">// Static variables used for profiling</font>
00077 <font class="keywordtype">double</font> CSourceDSound::_LastSwapTime = 0.0;
00078 <font class="keywordtype">double</font> CSourceDSound::_TotalSwapTime = 0.0;
00079 <font class="keywordtype">double</font> CSourceDSound::_MaxSwapTime = 0.0;
00080 <font class="keywordtype">double</font> CSourceDSound::_MinSwapTime = 1000000.0;
00081 uint32 CSourceDSound::_SwapCount = 0;
00082 <font class="keywordtype">double</font> CSourceDSound::_PosTime = 0.0;
00083 <font class="keywordtype">double</font> CSourceDSound::_LockTime = 0.0;
00084 <font class="keywordtype">double</font> CSourceDSound::_CopyTime = 0.0;
00085 <font class="keywordtype">double</font> CSourceDSound::_UnlockTime = 0.0;
00086 uint32 CSourceDSound::_CopyCount = 0;
00087 <font class="keywordtype">double</font> CSourceDSound::_TotalUpdateTime = 0.0;
00088 <font class="keywordtype">double</font> CSourceDSound::_MaxUpdateTime = 0.0;
00089 <font class="keywordtype">double</font> CSourceDSound::_MinUpdateTime = 1000000.0;
00090 uint32 CSourceDSound::_UpdateCount = 0;
00091 uint32 CSourceDSound::_TotalUpdateSize = 0;
00092 <font class="preprocessor">#endif</font>
00093 <font class="preprocessor"></font>
00094 
00095 
00096 <font class="comment">// ******************************************************************</font>
00097 
<a name="l00098"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a0">00098</a> CSourceDSound::CSourceDSound( uint sourcename ) : ISource(), _SourceName(sourcename)
00099 {
00100         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> = 0;
00101         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> = 0;
00102         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> = 0;
00103         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a29">NL_DSOUND_SILENCED</a>;
00104         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> = 0;
00105         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> = 0;
00106         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00107         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = 0;
00108         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o3">_Loop</a> = <font class="keyword">false</font>;
00109         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> = 0;
00110         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = <a class="code" href="namespaceNLSOUND.html#a86a33">NL_DSOUND_TAIL1</a>;
00111         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
00112         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o14">_Freq</a> = 1.0f;
00113         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o15">_SampleRate</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r3">_DefaultSampleRate</a>;
00114         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o16">_IsUsed</a> = <font class="keyword">false</font>;
00115         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o18">_Gain</a> = 1.0f;
00116         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o17">_Volume</a> = 0;
00117         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> = 0.0;
00118         InitializeCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>);
00119 }
00120 
00121 
00122 <font class="comment">// ******************************************************************</font>
00123 
<a name="l00124"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a1">00124</a> CSourceDSound::~CSourceDSound()
00125 {
00126         <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Destroying DirectSound source"</font>);
00127 
00128         CSoundDriverDSound::instance()-&gt;removeSource(<font class="keyword">this</font>);
00129 
00130         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00131 
00132         <font class="comment">// Release the DirectSound buffer within the critical zone</font>
00133         <font class="comment">// to avoid a call to update during deconstruction</font>
00134         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c0">release</a>();
00135 
00136         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00137         DeleteCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>);
00138 }
00139 
00140 
00141 <font class="comment">// ******************************************************************</font>
00142 
<a name="l00143"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c0">00143</a> <font class="keywordtype">void</font> CSourceDSound::release()
00144 {
00145         <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> = 0;
00146 
00147         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> != 0)
00148         {
00149                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Stop();
00150         }
00151 
00152         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00153         {
00154                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;Release();
00155                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> = 0;
00156         }
00157 
00158         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> != 0)
00159         {
00160                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Release();
00161                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> = 0;
00162         }
00163 
00164 }
00165 
00166 <font class="comment">// ******************************************************************</font>
00167 
<a name="l00168"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a2">00168</a> <font class="keywordtype">void</font> CSourceDSound::init(LPDIRECTSOUND directSound)
00169 {
00170 
00171         <font class="comment">// Initialize the buffer format</font>
00172         WAVEFORMATEX <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00173 
00174         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.cbSize = <font class="keyword">sizeof</font>(WAVEFORMATEX);
00175         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nChannels = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r2">_DefaultChannels</a>;
00176         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r4">_DefaultSampleSize</a>;
00177         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nSamplesPerSec = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r3">_DefaultSampleRate</a>;
00178         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nBlockAlign = <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nChannels * <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample / 8;
00179         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nAvgBytesPerSec = <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nSamplesPerSec * <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nBlockAlign;
00180         <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wFormatTag = WAVE_FORMAT_PCM;
00181 
00182 
00183         <font class="comment">// Initialize the buffer description </font>
00184 
00185         DSBUFFERDESC desc;
00186 
00187         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#l0">CSoundDriverDSound</a>* driver = CSoundDriverDSound::instance();
00188 
00189 
00190         ZeroMemory(&amp;desc, <font class="keyword">sizeof</font>(DSBUFFERDESC));
00191         desc.dwSize = <font class="keyword">sizeof</font>(DSBUFFERDESC);
00192         desc.lpwfxFormat = &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00193         desc.dwBufferBytes = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;      
00194         desc.dwReserved = 0; 
00195 
00196         <font class="keywordflow">if</font> (driver-&gt;countHw3DBuffers() &gt; 0)
00197         {
00198                 <font class="comment">//nldebug("Source: Allocating 3D buffer in hardware");</font>
00199                 desc.dwFlags = DSBCAPS_GLOBALFOCUS | DSBCAPS_LOCHARDWARE | DSBCAPS_GETCURRENTPOSITION2 
00200                                                 | DSBCAPS_CTRL3D | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY | DSBCAPS_MUTE3DATMAXDISTANCE;
00201         } 
00202         <font class="keywordflow">else</font>
00203         {
00204                 <font class="comment">//nldebug("Source: Allocating 3D buffer in software");</font>
00205                 desc.dwFlags = DSBCAPS_GLOBALFOCUS | DSBCAPS_LOCSOFTWARE | DSBCAPS_GETCURRENTPOSITION2 
00206                                                 | DSBCAPS_CTRL3D | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY | DSBCAPS_MUTE3DATMAXDISTANCE;
00207                 desc.guid3DAlgorithm = DS3DALG_NO_VIRTUALIZATION;
00208                 <font class="comment">//desc.guid3DAlgorithm = DS3DALG_HRTF_FULL;</font>
00209         }
00210 
00211 
00212         <font class="comment">// Allocate the secondary buffer</font>
00213  
00214         <font class="keywordflow">if</font> (FAILED(directSound-&gt;CreateSoundBuffer(&amp;desc, &amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>, NULL))) 
00215         {
00216                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Source: Failed to create a buffer with 3D capabilities."</font>);
00217 
00218                 ZeroMemory(&amp;desc, <font class="keyword">sizeof</font>(DSBUFFERDESC));
00219                 desc.dwSize = <font class="keyword">sizeof</font>(DSBUFFERDESC);
00220                 desc.lpwfxFormat = &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00221                 desc.dwBufferBytes = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;      
00222                 desc.dwReserved = 0; 
00223 
00224                 <font class="keywordflow">if</font> (driver-&gt;countHw2DBuffers() &gt; 0)
00225                 {
00226                         <font class="comment">//nldebug("Source: Allocating 2D buffer in hardware");</font>
00227                         desc.dwFlags = DSBCAPS_GLOBALFOCUS | DSBCAPS_LOCHARDWARE | DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY;
00228                 } 
00229                 <font class="keywordflow">else</font>
00230                 {
00231                         <font class="comment">//nldebug("Source: Allocating 2D buffer in software");</font>
00232                         desc.dwFlags = DSBCAPS_GLOBALFOCUS | DSBCAPS_LOCSOFTWARE | DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY;
00233                 }
00234 
00235                 <font class="keywordflow">if</font> (FAILED(directSound-&gt;CreateSoundBuffer(&amp;desc, &amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>, NULL))) 
00236                 {
00237                         <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to allocate the DirectSound secondary buffer"</font>);
00238                 }
00239         }
00240 
00241 
00242         <font class="comment">// Fill the buffer with silence</font>
00243 
00244         LPVOID ptr;
00245         DWORD bytes;
00246 
00247         <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Lock(0, 0, &amp;ptr, &amp;bytes, NULL, NULL, DSBLOCK_ENTIREBUFFER)))
00248         {
00249                 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to lock the DirectSound secondary buffer"</font>);
00250         }
00251 
00252         memset(ptr, 0, bytes);
00253         
00254         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr, bytes, 0, 0);
00255 
00256         <font class="comment">// Allocate the 3D interface, if necessary</font>
00257 
00258         <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;QueryInterface(IID_IDirectSound3DBuffer, (LPVOID *) &amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>)))
00259         {
00260            <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to allocate the DirectSound 3D buffer"</font>);
00261         }
00262 
00263 
00264         <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Play(0, 0, DSBPLAY_LOOPING)))
00265         {
00266                 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Play failed"</font>);
00267         }
00268 
00269 }
00270 
00271 <font class="comment">// ******************************************************************</font>
00272 
<a name="l00273"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a5">00273</a> <font class="keywordtype">void</font> CSourceDSound::reset()
00274 {
00275         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_8">setPitch</a>(1.0f);
00276         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_0">setLooping</a>(<font class="keyword">false</font>);
00277         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_6">setGain</a>(1.0f);
00278 }
00279 
00280 
00281 <font class="comment">// ******************************************************************</font>
00282 
<a name="l00283"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z968_0">00283</a> <font class="keywordtype">void</font> CSourceDSound::setStaticBuffer( IBuffer *buffer )
00284 {
00285         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00286 
00287         <font class="comment">// If the user calls setStaticBuffer with a null buffer,</font>
00288         <font class="comment">// stop the currently playing buffer and set it to null.</font>
00289         <font class="comment">// Otherwise, store the buffer in the swap buffer variable.</font>
00290         <font class="comment">// A crossfade between the current buffer and the swap buffer</font>
00291         <font class="comment">// will be done when the user calls play.</font>
00292         <font class="keywordflow">if</font> (buffer == 0)
00293         {
00294                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_3">stop</a>();
00295                 <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> = 0;
00296                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> = 0;
00297                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00298         }
00299 
00300         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> = <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> = buffer;
00301 
00302         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00303 }
00304 
00305 
00306 
00307 <font class="comment">// ******************************************************************</font>
00308 
<a name="l00309"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_0">00309</a> <font class="keywordtype">void</font> CSourceDSound::setLooping( <font class="keywordtype">bool</font> <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a> )
00310 {
00311         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o3">_Loop</a> = <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>;
00312 }
00313 
00314 
00315 <font class="comment">// ******************************************************************</font>
00316 
<a name="l00317"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_1">00317</a> <font class="keywordtype">bool</font> CSourceDSound::getLooping()<font class="keyword"> const</font>
00318 <font class="keyword"></font>{
00319         <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o3">_Loop</a>;
00320 }
00321 
00322 
00323 <font class="comment">// ******************************************************************</font>
00324 
<a name="l00325"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c3">00325</a> <font class="keywordtype">void</font> CSourceDSound::swap()
00326 {
00327         <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>;
00328         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> = <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>-&gt;getSize();
00329         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00330         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> = 0;
00331 }
00332 
00333 <font class="comment">// ******************************************************************</font>
00334 
<a name="l00335"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_2">00335</a> <font class="keywordtype">bool</font> CSourceDSound::play()
00336 {
00337         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00338 
00339         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> == 0 || ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>)-&gt;getData() == 0)
00340         {
00341                 <font class="comment">// the sample has been unloaded, can't play!</font>
00342 
00343                 LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00344                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00345         }
00346 
00347 
00348         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: Enter, buffer state = %u"</font>, <font class="keyword">this</font>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a>));
00349         <font class="keywordflow">switch</font> (_SecondaryBufferState)
00350         {
00351         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a27">NL_DSOUND_FILLING</a>:
00352                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> != 0)
00353                 {
00354                         <font class="comment">// crossfade to the new sound </font>
00355                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: XFading 1"</font>, <font class="keyword">this</font>));
00356                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c7">crossFade</a>();
00357                 }
00358                 <font class="keywordflow">break</font>;
00359 
00360         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>:
00361                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> != 0)
00362                 {
00363                         <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> != 0) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>))
00364                         {
00365                                 <font class="comment">// crossfade to the new sound</font>
00366                                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: XFading 2"</font>, <font class="keyword">this</font>));
00367                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c7">crossFade</a>();
00368                         }
00369                         <font class="keywordflow">else</font>
00370                         {
00371                                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: Swap &amp; fadein 1"</font>, <font class="keyword">this</font>));
00372                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c3">swap</a>();
00373                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c9">fadeIn</a>();
00374                         }
00375                 }
00376                 <font class="keywordflow">else</font>
00377                 {
00378                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: Fadein"</font>, <font class="keyword">this</font>));
00379                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00380                         <font class="comment">// start the old sound again</font>
00381                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c9">fadeIn</a>();
00382                 }
00383 
00384                 <font class="keywordflow">break</font>;
00385 
00386 
00387         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a29">NL_DSOUND_SILENCED</a>:
00388                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> != 0)
00389                 {
00390                         <font class="comment">// fade in to the new sound</font>
00391                                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: Swap &amp; fadein 2"</font>, <font class="keyword">this</font>));
00392                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c3">swap</a>();
00393                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c9">fadeIn</a>();
00394                 }
00395                 <font class="keywordflow">else</font>
00396                 {
00397                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: Fadein"</font>, <font class="keyword">this</font>));
00398                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00399                         <font class="comment">// start the old sound again</font>
00400                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c9">fadeIn</a>();
00401                 }
00402         }
00403 
00404         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>;
00405         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PLAY: PLAYING"</font>, <font class="keyword">this</font>));
00406 
00407         <font class="comment">//nldebug ("NLSOUND: %p play", this);</font>
00408 
00409         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00410 
00411         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00412 }
00413 
00414 
00415 <font class="comment">// ******************************************************************</font>
00416 
<a name="l00417"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_3">00417</a> <font class="keywordtype">void</font> CSourceDSound::stop()
00418 {
00419         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00420 
00421         <a class="code" href="namespaceNLSOUND.html#a85">TSourceDSoundUserState</a> old = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a>;
00422 
00423         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
00424         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] STOP: STOPPED"</font>, <font class="keyword">this</font>));
00425 
00426         <font class="comment">//nldebug ("NLSOUND: %p stop", this);</font>
00427 
00428         <font class="keywordflow">if</font> (old == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>)
00429         {
00430                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c8">fadeOut</a>();
00431         }
00432 
00433         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
00434 
00435         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00436 }
00437 
00438 <font class="comment">// ******************************************************************</font>
00439 
<a name="l00440"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_4">00440</a> <font class="keywordtype">void</font> CSourceDSound::pause()
00441 {
00442         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00443 
00444         <a class="code" href="namespaceNLSOUND.html#a85">TSourceDSoundUserState</a> old = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a>;
00445 
00446         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a31">NL_DSOUND_PAUSED</a>;
00447         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] PAUZ: PAUSED"</font>, <font class="keyword">this</font>));
00448 
00449         <font class="comment">//nldebug ("NLOUND: pause %p", this);</font>
00450 
00451         <font class="keywordflow">if</font> (old == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>)
00452         {
00453                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c8">fadeOut</a>();
00454         }
00455 
00456         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00457 }
00458 
00459 <font class="comment">// ******************************************************************</font>
00460 
<a name="l00461"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_5">00461</a> <font class="keywordtype">bool</font> CSourceDSound::isPlaying()<font class="keyword"> const</font>
00462 <font class="keyword"></font>{
00463         <font class="keywordflow">return</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>);
00464 }
00465 
00466 
00467 <font class="comment">// ******************************************************************</font>
00468 
<a name="l00469"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_7">00469</a> <font class="keywordtype">bool</font> CSourceDSound::isPaused()<font class="keyword"> const</font>
00470 <font class="keyword"></font>{
00471         <font class="keywordflow">return</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a31">NL_DSOUND_PAUSED</a>);
00472 }
00473 
00474 
00475 <font class="comment">// ******************************************************************</font>
00476 
<a name="l00477"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_6">00477</a> <font class="keywordtype">bool</font> CSourceDSound::isStopped()<font class="keyword"> const</font>
00478 <font class="keyword"></font>{
00479         <font class="keywordflow">return</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>);
00480 }
00481 
00482 
00483 <font class="comment">// ******************************************************************</font>
00484 
<a name="l00485"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c10">00485</a> <font class="keywordtype">bool</font> CSourceDSound::needsUpdate()
00486 {
00487         DWORD playPos, writePos;
00488         uint32 space;
00489         
00490         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
00491         {
00492                 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00493         }
00494 
00495         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
00496 
00497                 
00498         <font class="keywordflow">if</font> (playPos == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>)
00499         {
00500                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00501         }
00502         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>) 
00503         {
00504                 space = playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
00505         }
00506         <font class="keywordflow">else</font>
00507         {
00508                 space = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a> + playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
00509         }
00510         
00511         <font class="comment">// Don't bother if the number of samples is smaller than the copy size.</font>
00512         <font class="keywordflow">return</font> (space &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>);
00513 }
00514 
00515 
00516 
00517 <font class="comment">// ******************************************************************</font>
00518 
<a name="l00519"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_8">00519</a> <font class="keywordtype">void</font> CSourceDSound::update()
00520 {
00521         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_9">update2</a>();
00522 }
00523 
00524 <font class="comment">// ******************************************************************</font>
00525 
<a name="l00526"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z969_9">00526</a> <font class="keywordtype">bool</font> CSourceDSound::update2()
00527 {
00528         <font class="keywordtype">bool</font> <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a> = <font class="keyword">false</font>;
00529 
00530 
00531 
00532         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(start);
00533 
00534         <font class="comment">//</font>
00535         <font class="comment">// Enter critical region</font>
00536         <font class="comment">//</font>
00537         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>);
00538 
00539 
00540         <font class="keywordflow">switch</font> (_SecondaryBufferState)
00541         {
00542 
00543 
00544         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a29">NL_DSOUND_SILENCED</a>:
00545                 {
00546                         <font class="comment">// Just pretend were writing silence by advancing the next </font>
00547                         <font class="comment">// write position.</font>
00548                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> += <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>;
00549                         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
00550                         {
00551                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>  -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
00552                         }
00553                 }
00554                 <font class="keywordflow">break</font>;
00555 
00556 
00557         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a27">NL_DSOUND_FILLING</a>:
00558                 <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c5">fill</a>();   
00559                 <font class="keywordflow">break</font>;
00560 
00561 
00562         <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>:
00563                 <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c6">silence</a>();        
00564                 <font class="keywordflow">break</font>;
00565 
00566         }
00567 
00568 
00569         <font class="comment">//</font>
00570         <font class="comment">// Leave critical region</font>
00571         <font class="comment">//</font>
00572         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
00573 
00574 
00575 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00576 <font class="preprocessor"></font>        <font class="keywordtype">double</font> dt = CTime::ticksToSecond(CTime::getPerformanceTime() - start);;
00577         _TotalUpdateTime += dt;
00578         _MaxUpdateTime = (dt &gt; _MaxUpdateTime) ? dt : _MaxUpdateTime;
00579         _MinUpdateTime = (dt &lt; _MinUpdateTime) ? dt : _MinUpdateTime;
00580         _UpdateCount++;
00581 <font class="preprocessor">#endif</font>
00582 <font class="preprocessor"></font>
00583         <font class="keywordflow">return</font> <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a>;
00584 }
00585 
00586 
00587 
00588 <font class="comment">// ******************************************************************</font>
00589 
<a name="l00590"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_0">00590</a> <font class="keywordtype">void</font> CSourceDSound::setPos( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; pos, <font class="keywordtype">bool</font> deferred )
00591 {
00592         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o20">_Pos</a> = pos;
00593         <font class="comment">// Coordinate system: conversion from NeL to OpenAL/GL:</font>
00594         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != NULL)
00595         {
00596                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetPosition(pos.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, pos.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>, pos.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>, deferred ? DS3D_DEFERRED : DS3D_IMMEDIATE) != DS_OK)
00597                 {
00598                         <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"SetPosition failed"</font>);
00599                 }
00600                 <font class="keywordflow">else</font>
00601                 {
00602                         <font class="comment">//nlwarning ("%p set source NEL(p:%.2f/%.2f/%.2f) DS(p:%.2f/%.2f/%.2f)", this, pos.x, pos.y, pos.z, pos.x, pos.z, pos.y);</font>
00603                 }
00604         }
00605 }
00606 
00607 
00608 <font class="comment">// ******************************************************************</font>
00609 
<a name="l00610"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_1">00610</a> <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &amp;CSourceDSound::getPos()<font class="keyword"> const</font>
00611 <font class="keyword"></font>{
00612         <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o20">_Pos</a>;
00613         <font class="comment">// Coordinate system: conversion from NeL to OpenAL/GL:</font>
00614 <font class="comment">/*      if (_3DBuffer != NULL)</font>
00615 <font class="comment">        {</font>
00616 <font class="comment">                D3DVECTOR v;</font>
00617 <font class="comment">                HRESULT hr = _3DBuffer-&gt;GetPosition(&amp;v);</font>
00618 <font class="comment"></font>
00619 <font class="comment">                if (hr != DS_OK)</font>
00620 <font class="comment">                {</font>
00621 <font class="comment">                        nlwarning ("GetPosition failed");</font>
00622 <font class="comment">                        pos.set(0, 0, 0);       </font>
00623 <font class="comment">                }</font>
00624 <font class="comment">                else</font>
00625 <font class="comment">                {</font>
00626 <font class="comment">                        pos.set(v.x, v.z, v.y);</font>
00627 <font class="comment">                }</font>
00628 <font class="comment">        }</font>
00629 <font class="comment">        else</font>
00630 <font class="comment">        {</font>
00631 <font class="comment">                pos.set(0, 0, 0);       </font>
00632 <font class="comment">        }</font>
00633 <font class="comment">*/</font>
00634 }
00635 
00636 
00637 <font class="comment">// ******************************************************************</font>
00638 
<a name="l00639"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_2">00639</a> <font class="keywordtype">void</font> CSourceDSound::setVelocity( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; vel, <font class="keywordtype">bool</font> deferred )
00640 {
00641         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != NULL)
00642         {
00643                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetVelocity(vel.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, vel.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>, vel.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>, deferred ? DS3D_DEFERRED : DS3D_IMMEDIATE) != DS_OK)
00644                 {
00645                         <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"SetVelocity failed"</font>);
00646                 }
00647         }
00648 }
00649 
00650 
00651 <font class="comment">// ******************************************************************</font>
00652 
<a name="l00653"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_3">00653</a> <font class="keywordtype">void</font> CSourceDSound::getVelocity( <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; vel )<font class="keyword"> const</font>
00654 <font class="keyword"></font>{
00655         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != NULL)
00656         {
00657                 D3DVECTOR <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00658 
00659                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetVelocity(&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>) != DS_OK)
00660                 {
00661                         <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"GetVelocity failed"</font>);
00662                         vel.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(0, 0, 0);       
00663                 }
00664                 <font class="keywordflow">else</font>
00665                 {
00666                         vel.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.x, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.z, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.y);
00667                 }
00668         }
00669         <font class="keywordflow">else</font>
00670         {
00671                 vel.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(0, 0, 0);       
00672         }
00673 }
00674 
00675 
00676 <font class="comment">// ******************************************************************</font>
00677 
<a name="l00678"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_4">00678</a> <font class="keywordtype">void</font> CSourceDSound::setDirection( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; dir )
00679 {
00680         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00681         {
00682                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetConeOrientation(dir.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, dir.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>, dir.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>, DS3D_DEFERRED) != DS_OK)
00683                 {
00684                         <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"SetConeOrientation failed (x=%.2f, y=%.2f, z=%.2f)"</font>, dir.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, dir.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>, dir.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>);
00685                 }
00686                 <font class="keywordflow">else</font>
00687                 {
00688                         <font class="comment">//nlwarning ("NLSOUND: %p set source direction NEL(p:%.2f/%.2f/%.2f) DS(p:%.2f/%.2f/%.2f)", this, dir.x, dir.y, dir.z, dir.x, dir.z, dir.y);</font>
00689                 }
00690         }
00691 }
00692 
00693 
00694 <font class="comment">// ******************************************************************</font>
00695 
<a name="l00696"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_5">00696</a> <font class="keywordtype">void</font> CSourceDSound::getDirection( <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; dir )<font class="keyword"> const</font>
00697 <font class="keyword"></font>{
00698         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != NULL)
00699         {
00700                 D3DVECTOR <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00701 
00702                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetConeOrientation(&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>) != DS_OK)
00703                 {
00704                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetConeOrientation failed"</font>);
00705                         dir.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(0, 0, 1);       
00706                 }
00707                 <font class="keywordflow">else</font>
00708                 {
00709                         dir.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.x, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.z, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>.y);
00710                 }
00711         }
00712         <font class="keywordflow">else</font>
00713         {
00714                 dir.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(0, 0, 1);       
00715         }
00716 }
00717 
00718 
00719 <font class="comment">// ******************************************************************</font>
00720 
<a name="l00721"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_6">00721</a> <font class="keywordtype">void</font> CSourceDSound::setGain( <font class="keywordtype">float</font> gain )
00722 {
00723         <a class="code" href="namespaceNLMISC.html#a215">clamp</a>(gain, 0.00001f, 1.0f);
00724         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o18">_Gain</a> = gain;
00725 
00726         <font class="comment">/* convert from linear amplitude to hundredths of decibels */</font>
00727         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o17">_Volume</a> = (uint32)(100.0 * 20.0 * log10(gain));
00728         <a class="code" href="namespaceNLMISC.html#a215">clamp</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o17">_Volume</a>, DSBVOLUME_MIN, DSBVOLUME_MAX);
00729 
00730         <font class="comment">//nlwarning ("set gain %f vol %d", gain, _Volume);</font>
00731 
00732         <font class="comment">/*</font>
00733 <font class="comment">        if ((_SecondaryBuffer != 0) &amp;&amp; (_SecondaryBuffer-&gt;SetVolume(_Volume) != DS_OK))</font>
00734 <font class="comment">        {</font>
00735 <font class="comment">                nlwarning("SetVolume failed");</font>
00736 <font class="comment">        }</font>
00737 <font class="comment">        */</font>
00738 }
00739 
00740 
00741 <font class="comment">/*</font>
00742 <font class="comment"> * Get the gain</font>
00743 <font class="comment"> */</font>
<a name="l00744"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_7">00744</a> <font class="keywordtype">float</font> CSourceDSound::getGain()<font class="keyword"> const</font>
00745 <font class="keyword"></font>{
00746         <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o18">_Gain</a>;
00747 }
00748 
00749 
00750 <font class="comment">// ******************************************************************</font>
00751 
<a name="l00752"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_8">00752</a> <font class="keywordtype">void</font> CSourceDSound::setPitch( <font class="keywordtype">float</font> coeff )
00753 {
00754 <font class="comment">//      _Freq = coeff;</font>
00755 
00756         <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> != 0) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> != 0))
00757         {
00758                 <a class="code" href="namespaceNLSOUND.html#a83">TSampleFormat</a> <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00759                 uint freq;
00760 
00761                 <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>-&gt;getFormat(<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>, freq);
00762 
00763                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o15">_SampleRate</a> = (uint32) (coeff * (float) freq);
00764 
00765                 <font class="comment">//nlwarning("Freq=%d", newfreq);</font>
00766 
00767                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;SetFrequency(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o15">_SampleRate</a>) != DS_OK)
00768                 {
00769 <font class="comment">//                      nlwarning("SetFrequency failed (buffer freq=%d, NeL freq=%.5f, DSound freq=%d)", freq, coeff, newfreq);</font>
00770                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetFrequency"</font>);
00771                 }
00772         }
00773 }
00774 
00775 
00776 <font class="comment">// ******************************************************************</font>
00777 
<a name="l00778"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_9">00778</a> <font class="keywordtype">float</font> CSourceDSound::getPitch()<font class="keyword"> const</font>
00779 <font class="keyword"></font>{
00780         <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> != 0) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> != 0))
00781         {
00782                 <a class="code" href="namespaceNLSOUND.html#a83">TSampleFormat</a> <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00783                 uint freq0;
00784                 DWORD freq;
00785 
00786                 <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>-&gt;getFormat(<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>, freq0);
00787 
00788                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetFrequency(&amp;freq) != DS_OK)
00789                 {
00790                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetFrequency failed"</font>);
00791                         <font class="keywordflow">return</font> 1.0;
00792                 }
00793 
00794                 <font class="keywordflow">return</font> ((float) freq / (float) freq0);
00795         }
00796 
00797         <font class="keywordflow">return</font> 1.0;
00798 }
00799 
00800 
00801 <font class="comment">// ******************************************************************</font>
00802 
<a name="l00803"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_10">00803</a> <font class="keywordtype">void</font> CSourceDSound::setSourceRelativeMode( <font class="keywordtype">bool</font> mode )
00804 {
00805         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00806         {
00807                 HRESULT hr;
00808 
00809                 <font class="keywordflow">if</font> (mode)
00810                 {
00811                         hr = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetMode(DS3DMODE_HEADRELATIVE, DS3D_IMMEDIATE);
00812                 }
00813                 <font class="keywordflow">else</font>
00814                 {
00815                         hr = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetMode(DS3DMODE_NORMAL, DS3D_IMMEDIATE);
00816                 }
00817 
00818                 <font class="keywordflow">if</font> (hr != DS_OK)
00819                 {
00820                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetMode failed"</font>);
00821                 }
00822         }
00823         <font class="keywordflow">else</font>
00824         {
00825                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested setSourceRelativeMode on a non-3D source"</font>);
00826         }
00827 }
00828 
00829 
00830 <font class="comment">// ******************************************************************</font>
00831 
<a name="l00832"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_11">00832</a> <font class="keywordtype">bool</font> CSourceDSound::getSourceRelativeMode()<font class="keyword"> const</font>
00833 <font class="keyword"></font>{
00834         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00835         {
00836                 DWORD mode;
00837 
00838                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetMode(&amp;mode) != DS_OK)
00839                 {
00840                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetMode failed"</font>);
00841                         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00842                 }
00843 
00844                 <font class="keywordflow">return</font> (mode == DS3DMODE_HEADRELATIVE);
00845         }
00846         <font class="keywordflow">else</font>
00847         {
00848                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested setSourceRelativeMode on a non-3D source"</font>);
00849                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00850         }
00851 }
00852 
00853 
00854 <font class="comment">// ******************************************************************</font>
00855 
<a name="l00856"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_12">00856</a> <font class="keywordtype">void</font> CSourceDSound::setMinMaxDistances( <font class="keywordtype">float</font> mindist, <font class="keywordtype">float</font> maxdist, <font class="keywordtype">bool</font> deferred )
00857 {
00858         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00859         {
00860                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetMinDistance(mindist, deferred ? DS3D_DEFERRED : DS3D_IMMEDIATE) != DS_OK)
00861                 {
00862                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetMinDistance (%f) failed"</font>, mindist);
00863                 }
00864                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetMaxDistance(maxdist, deferred ? DS3D_DEFERRED : DS3D_IMMEDIATE) != DS_OK)
00865                 {
00866                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetMaxDistance (%f) failed"</font>, maxdist);
00867                 }
00868         }
00869         <font class="keywordflow">else</font>
00870         {
00871                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested setMinMaxDistances on a non-3D source"</font>);
00872         }
00873 }
00874 
00875 
00876 <font class="comment">// ******************************************************************</font>
00877 
<a name="l00878"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_13">00878</a> <font class="keywordtype">void</font> CSourceDSound::getMinMaxDistances( <font class="keywordtype">float</font>&amp; mindist, <font class="keywordtype">float</font>&amp; maxdist )<font class="keyword"> const</font>
00879 <font class="keyword"></font>{
00880         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00881         {
00882                 D3DVALUE <a class="code" href="bit__set_8cpp.html#a0">min</a>, max;
00883 
00884                 <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetMinDistance(&amp;<a class="code" href="bit__set_8cpp.html#a0">min</a>) != DS_OK)
00885                         || (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetMaxDistance(&amp;max) != DS_OK))
00886                 {
00887                         mindist = 0.0f;
00888                         maxdist = 0.0f;
00889                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetMinDistance or GetMaxDistance failed"</font>);
00890                 }
00891                 <font class="keywordflow">else</font>
00892                 {
00893                         mindist = <a class="code" href="bit__set_8cpp.html#a0">min</a>;
00894                         maxdist = max;
00895                 }
00896         }
00897         <font class="keywordflow">else</font>
00898         {
00899                 mindist = 0.0f;
00900                 maxdist = 0.0f;
00901                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested getMinMaxDistances on a non-3D source"</font>);
00902         }
00903 }
00904 
00905 <font class="comment">// ******************************************************************</font>
00906 
<a name="l00907"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a6">00907</a> <font class="keywordtype">void</font> CSourceDSound::updateVolume( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>&amp; listener )
00908 {
00909         CVector pos = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_1">getPos</a>();
00910         pos -= listener;
00911 
00912         <font class="keywordtype">float</font> sqrdist = pos.<a class="code" href="classNLMISC_1_1CVector.html#z331_3">sqrnorm</a>();
00913         <font class="keywordtype">float</font> <a class="code" href="bit__set_8cpp.html#a0">min</a>, max;
00914 
00915         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_13">getMinMaxDistances</a>(<a class="code" href="bit__set_8cpp.html#a0">min</a>, max);
00916 
00917         <font class="keywordflow">if</font> (sqrdist &lt; <a class="code" href="bit__set_8cpp.html#a0">min</a> * <a class="code" href="bit__set_8cpp.html#a0">min</a>) 
00918         {
00919                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;SetVolume(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o17">_Volume</a>);
00920                 <font class="comment">//nlwarning("VOLUME = %ddB, rolloff = %0.2f", _Volume/100, CListenerDSound::instance()-&gt;getRolloffFactor());</font>
00921         }
00922         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (sqrdist &gt; max * max)
00923         {
00924                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;SetVolume(DSBVOLUME_MIN);
00925                 <font class="comment">//nlwarning("VOLUME = %ddB, rolloff = %0.2f", DSBVOLUME_MIN/100, CListenerDSound::instance()-&gt;getRolloffFactor());</font>
00926         }
00927         <font class="keywordflow">else</font>
00928         {
00929                 sint32 db = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o17">_Volume</a>;
00930 
00931                 <font class="keywordtype">double</font> dist = (double) sqrt(sqrdist);
00932 
00933                 <font class="comment">// linearly descending volume on a dB scale</font>
00934                 <font class="keywordtype">double</font> db1 = DSBVOLUME_MIN * (dist - <a class="code" href="bit__set_8cpp.html#a0">min</a>) / (max - <a class="code" href="bit__set_8cpp.html#a0">min</a>);
00935 
00936                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> == 0.0) {
00937                         db += (sint32) db1;
00938 
00939                 } <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> &gt; 0.0) {
00940                         <font class="keywordtype">double</font> amp2 = 0.0001 + 0.9999 * (max - dist) / (max - <a class="code" href="bit__set_8cpp.html#a0">min</a>); <font class="comment">// linear amp between 0.00001 and 1.0</font>
00941                         <font class="keywordtype">double</font> db2 = 2000.0 * log10(amp2); <font class="comment">// covert to 1/100th decibels</font>
00942                         db += (sint32) ((1.0 - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a>) * db1 + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> * db2);
00943 
00944                 } <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> &lt; 0.0) {
00945                         <font class="keywordtype">double</font> amp3 = <a class="code" href="bit__set_8cpp.html#a0">min</a> / dist; <font class="comment">// linear amplitude is 1/distance</font>
00946                         <font class="keywordtype">double</font> db3 = 2000.0 * log10(amp3); <font class="comment">// covert to 1/100th decibels</font>
00947                         db += (sint32) ((1.0 + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a>) * db1 - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o19">_Alpha</a> * db3);
00948                 }
00949 
00950                 <a class="code" href="namespaceNLMISC.html#a215">clamp</a>(db, DSBVOLUME_MIN, DSBVOLUME_MAX);
00951 
00952                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;SetVolume(db);
00953 
00954 <font class="comment">/*              LONG tmp;</font>
00955 <font class="comment">                _SecondaryBuffer-&gt;GetVolume(&amp;tmp);</font>
00956 <font class="comment">*/</font>
00957                 
00958                 <font class="comment">//nlwarning("VOLUME = %d dB, rolloff = %0.2f", db/100, CListenerDSound::instance()-&gt;getRolloffFactor());</font>
00959         }
00960 
00961 }
00962 
00963 <font class="comment">// ******************************************************************</font>
00964 
<a name="l00965"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_14">00965</a> <font class="keywordtype">void</font> CSourceDSound::setCone( <font class="keywordtype">float</font> innerAngle, <font class="keywordtype">float</font> outerAngle, <font class="keywordtype">float</font> outerGain )
00966 {
00967         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
00968         {
00969                 <font class="comment">// Set the cone angles</font>
00970 
00971                 <font class="comment">// Convert from radians to degrees</font>
00972                 DWORD inner = (DWORD)(180.0 * innerAngle / <a class="code" href="namespaceNLMISC.html#a7">Pi</a>);
00973                 DWORD outer = (DWORD)(180.0 * outerAngle / <a class="code" href="namespaceNLMISC.html#a7">Pi</a>);
00974 
00975 
00976                 <font class="comment">// Sanity check: wrap the angles in the [0,360] interval</font>
00977                 <font class="keywordflow">if</font> (outer &lt; inner)
00978                 {
00979                         outer = inner;
00980                 }
00981 
00982                 <font class="keywordflow">while</font> (inner &lt; DS3D_MINCONEANGLE) 
00983                 {
00984                         inner += 360;
00985                 }
00986 
00987                 <font class="keywordflow">while</font> (inner &gt; DS3D_MAXCONEANGLE)
00988                 {
00989                         inner -= 360;
00990                 }
00991 
00992                 <font class="keywordflow">while</font> (outer &lt; DS3D_MINCONEANGLE) 
00993                 {
00994                         outer += 360;
00995                 }
00996 
00997                 <font class="keywordflow">while</font> (outer &gt; DS3D_MAXCONEANGLE)
00998                 {
00999                         outer -= 360;
01000                 }
01001 
01002                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetConeAngles(inner, outer, DS3D_DEFERRED) != DS_OK)
01003                 {
01004                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetConeAngles failed"</font>);                      
01005                 }
01006 
01007                 <font class="comment">// Set the outside volume</font>
01008                 <font class="keywordflow">if</font> (outerGain &lt; 0.00001f)
01009                 {
01010                         outerGain = 0.00001f;
01011                 }
01012 
01013                 <font class="comment">// convert from linear amplitude to hundredths of decibels </font>
01014                 LONG volume = (LONG)(100.0 * 20.0 * log10(outerGain));
01015 
01016                 <font class="keywordflow">if</font> (volume &lt; DSBVOLUME_MIN) 
01017                 {
01018                         volume = DSBVOLUME_MIN;
01019                 }
01020                 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (volume &gt; DSBVOLUME_MAX) 
01021                 {
01022                         volume = DSBVOLUME_MAX;
01023                 }
01024 
01025                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;SetConeOutsideVolume(volume, DS3D_DEFERRED) != DS_OK)
01026                 {
01027                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"SetConeOutsideVolume failed"</font>);               
01028                 }
01029 
01030         }
01031         <font class="keywordflow">else</font>
01032         {
01033                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested setCone on a non-3D source"</font>);
01034         }
01035 }
01036 
01037 <font class="comment">// ******************************************************************</font>
01038 
<a name="l01039"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_15">01039</a> <font class="keywordtype">void</font> CSourceDSound::getCone( <font class="keywordtype">float</font>&amp; innerAngle, <font class="keywordtype">float</font>&amp; outerAngle, <font class="keywordtype">float</font>&amp; outerGain )<font class="keyword"> const</font>
01040 <font class="keyword"></font>{
01041         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a> != 0)
01042         {
01043                 DWORD inner, outer;
01044                 LONG volume;
01045 
01046                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetConeAngles(&amp;inner, &amp;outer) != DS_OK)
01047                 {
01048                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetConeAngles failed"</font>);                      
01049                         innerAngle = outerAngle = (float)(2.0 * <a class="code" href="namespaceNLMISC.html#a7">Pi</a>);
01050                 }
01051                 <font class="keywordflow">else</font>
01052                 {
01053                         innerAngle = (float)(<a class="code" href="namespaceNLMISC.html#a7">Pi</a> * inner / 180.0);
01054                         outerAngle = (float)(<a class="code" href="namespaceNLMISC.html#a7">Pi</a> * outer / 180.0);
01055                 }
01056 
01057                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o7">_3DBuffer</a>-&gt;GetConeOutsideVolume(&amp;volume) != DS_OK)
01058                 {
01059                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"GetConeOutsideVolume failed"</font>);               
01060                         outerGain = 0.0f;
01061                 }
01062                 <font class="keywordflow">else</font>
01063                 {
01064                         outerGain = (float) pow(10, (<font class="keywordtype">double</font>) volume / 20.0 / 100.0);
01065                 }
01066         }
01067         <font class="keywordflow">else</font>
01068         {
01069                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Requested getCone on a non-3D source"</font>);
01070         }
01071 }
01072 
01073 <font class="comment">// ******************************************************************</font>
01074 
<a name="l01075"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_16">01075</a> <font class="keywordtype">void</font> CSourceDSound::setEAXProperty( uint prop, <font class="keywordtype">void</font> *<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, uint valuesize )
01076 {
01077 <font class="preprocessor">#ifdef EAX_AVAILABLE</font>
01078 <font class="preprocessor"></font>        <font class="keywordflow">if</font> ( EAXSetProp != NULL )
01079         {
01080                 EAXSetProp( &amp;DSPROPSETID_EAX_SourceProperties, prop, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o0">_SourceName</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, valuesize );
01081         }
01082 <font class="preprocessor">#endif</font>
01083 <font class="preprocessor"></font>}
01084 
01085 
01086 <font class="comment">// ******************************************************************</font>
01087 
<a name="l01088"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#a4">01088</a> IBuffer *CSourceDSound::getBuffer()
01089 {       
01090         <font class="keywordflow">return</font> <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>;
01091 }
01092 
01093 
01094 <font class="comment">// ******************************************************************</font>
01095 
<a name="l01096"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c1">01096</a> <font class="keywordtype">bool</font> CSourceDSound::lock(uint32 writePos, uint32 size, uint8* &amp;ptr1, DWORD &amp;bytes1, uint8* &amp;ptr2, DWORD &amp;bytes2)
01097 {
01098         HRESULT hr = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Lock(writePos, size, (LPVOID*) &amp;ptr1, &amp;bytes1, (LPVOID*) &amp;ptr2, &amp;bytes2, 0);
01099 
01100         <font class="keywordflow">if</font> (hr == DSERR_BUFFERLOST)
01101         {
01102                 <font class="comment">// If the buffer got lost somehow, try to restore it.</font>
01103                 <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Restore()))
01104                 {
01105                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Lock failed (1)"</font>);
01106                         <font class="keywordflow">return</font> <font class="keyword">false</font>;
01107                 }
01108                 <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Lock(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>, (LPVOID*) &amp;ptr1, &amp;bytes1, (LPVOID*) &amp;ptr2, &amp;bytes2, 0)))
01109                 {
01110                         <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Lock failed (2)"</font>);
01111                         <font class="keywordflow">return</font> <font class="keyword">false</font>;
01112                 }
01113         } 
01114         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (hr != DS_OK)
01115         {
01116                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Lock failed (3)"</font>);
01117                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01118         }
01119 
01120         <font class="keywordflow">return</font> <font class="keyword">true</font>;
01121 }
01122 
01123 <font class="comment">// ******************************************************************</font>
01124 
<a name="l01125"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c2">01125</a> <font class="keywordtype">bool</font> CSourceDSound::unlock(uint8* ptr1, DWORD bytes1, uint8* ptr2, DWORD bytes2)
01126 {
01127         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
01128         <font class="keywordflow">return</font> <font class="keyword">true</font>;
01129 }
01130 
01131 
01132 
01133 <font class="comment">/***************************************************************************</font>
01134 <font class="comment"> </font>
01135 <font class="comment"></font>
01136 <font class="comment">  Buffer operations</font>
01137 <font class="comment"></font>
01138 <font class="comment">  There are five buffer operation: fill, silence, fadeOut, crossFade</font>
01139 <font class="comment">  and fadeIn. fill and silence are called by the update function. The</font>
01140 <font class="comment">  others are called by the user state functions (play, stop, pause).</font>
01141 <font class="comment"></font>
01142 <font class="comment"></font>
01143 <font class="comment">                        NW         P   W</font>
01144 <font class="comment">   +--------+------+---+-----------------------+</font>
01145 <font class="comment">   |........|      |xxx|.......................|</font>
01146 <font class="comment">   +--------+------+---+-----------------------+</font>
01147 <font class="comment"></font>
01148 <font class="comment">  The source maintains the next write position (_NextWritePos, NW in figure</font>
01149 <font class="comment">  above). That is the position at which new samples or silemce is written.</font>
01150 <font class="comment">  DirectSound maintaines a play cursor and a write cursor (P and W in figure).</font>
01151 <font class="comment">  The data between P and W is scheduled for playing and cannot be touched.</font>
01152 <font class="comment">  The data between W and NW are unplayed sample data that the source copied</font>
01153 <font class="comment">  into the DirectSound buffer.</font>
01154 <font class="comment"></font>
01155 <font class="comment">  The update functions (fill, silence) refresh the buffer with new samples</font>
01156 <font class="comment">  or silence. That insert the sample data at the next write position NW. This </font>
01157 <font class="comment">  write position is maintained as closely behind the DirectSound play cursor </font>
01158 <font class="comment">  as possible to keep the buffer filled with data.</font>
01159 <font class="comment"></font>
01160 <font class="comment">  The user functions (the fades) modify the sample data that is right after</font>
01161 <font class="comment">  the write cursor W maintained by DirectSound. The data has to be written </font>
01162 <font class="comment">  after W to hear the changes as soon as possible. When a fade is done, the</font>
01163 <font class="comment">  date already written in the buffer has to be overwritten. The function</font>
01164 <font class="comment">  getFadeOutSize() helps to found out how many samples are writen between</font>
01165 <font class="comment">  W and NW and to what section of the original audio data they correspond.</font>
01166 <font class="comment"></font>
01167 <font class="comment">  All the buffer functions below have the same pattern:</font>
01168 <font class="comment"></font>
01169 <font class="comment">        - get current play and write cursors (P and W)</font>
01170 <font class="comment">        - lock the buffer</font>
01171 <font class="comment">        - copy samples</font>
01172 <font class="comment">        - unlock buffer</font>
01173 <font class="comment">        - update state variables</font>
01174 <font class="comment"></font>
01175 <font class="comment">  The differences between the functions are due to different operation</font>
01176 <font class="comment">  (fades), position and size of the buffer to lock, handling of silence</font>
01177 <font class="comment">  and looping.</font>
01178 <font class="comment"></font>
01179 <font class="comment">  Enjoy!</font>
01180 <font class="comment"></font>
01181 <font class="comment">  PH</font>
01182 <font class="comment"></font>
01183 <font class="comment"></font>
01184 <font class="comment">************************************************************************/</font>
01185 
<a name="l01186"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c5">01186</a> <font class="keywordtype">bool</font> CSourceDSound::fill()
01187 {
01188         <font class="keywordtype">bool</font> <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a> = <font class="keyword">false</font>;
01189         uint8 *ptr1, *ptr2;
01190         DWORD bytes1, bytes2;
01191         DWORD playPos, writePos;
01192         uint32 space;
01193 
01194 
01195         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> == NULL)
01196         {
01197                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
01198                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
01199                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01200         }
01201 
01202         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
01203         {
01204                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01205         }
01206 
01207 
01208         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startPos);
01209 
01210 
01211         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
01212 
01213         <font class="keywordflow">if</font> (playPos == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>)
01214         {
01215                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01216         }
01217         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>) 
01218         {
01219                 space = playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
01220         }
01221         <font class="keywordflow">else</font>
01222         {
01223                 space = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a> + playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
01224         }
01225 
01226         <font class="comment">// Don't bother if the number of samples that can be written is too small.</font>
01227         <font class="keywordflow">if</font> (space &lt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>)
01228         {
01229                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01230         }
01231 
01232 
01233         uint8* <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> = ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>)-&gt;getData();
01234         uint32 available = (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> &lt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>) ? <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> : 0;
01235 
01236 
01237         <font class="comment">// The number of samples bytes that will be copied. If bytes is 0</font>
01238         <font class="comment">// than write silence to the buffer.</font>
01239         uint32 bytes = <a class="code" href="source__dsound_8cpp.html#a2">NLSOUND_MIN</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>, available);
01240         uint32 clear = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a> - available;
01241 
01242 
01243         <font class="comment">// Lock the buffer</font>
01244 
01245         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startLock);
01246 
01247 
01248         <font class="keywordflow">if</font> (!<a class="code" href="classNLSOUND_1_1CSourceDSound.html#c1">lock</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>, ptr1, bytes1, ptr2, bytes2))
01249         {
01250                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01251         }
01252 
01253 
01254         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startCopy);
01255 
01256         <font class="comment">// Start copying the samples</font>
01257 
01258         <font class="keywordflow">if</font> (bytes1 &lt;= bytes) {
01259 
01260                 CFastMem::memcpy(ptr1, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes1);
01261                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes1;
01262                 bytes -= bytes1;
01263 
01264                 <font class="keywordflow">if</font> (ptr2)
01265                 {
01266                         <font class="keywordflow">if</font> (bytes &gt; 0)
01267                         {
01268                                 CFastMem::memcpy(ptr2, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes);                                    
01269                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes;
01270                         }
01271 
01272                         <font class="keywordflow">if</font> (bytes &lt; bytes2)
01273                         {
01274                                 <font class="keywordflow">if</font> (_Loop)
01275                                 {
01276                                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: LOOP"</font>, <font class="keyword">this</font>));
01277 
01278                                         CFastMem::memcpy(ptr2 + bytes, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a>, bytes2 - bytes); 
01279                                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes2 - bytes;
01280                                 }
01281                                 <font class="keywordflow">else</font>
01282                                 {
01283                                         memset(ptr2 + bytes, 0, bytes2 - bytes); 
01284                                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes2 - bytes;
01285                                 }
01286                         }
01287                 }
01288         }
01289         <font class="keywordflow">else</font>
01290         {
01291                 <font class="keywordflow">if</font> (bytes &gt; 0)
01292                 {
01293                         CFastMem::memcpy(ptr1, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes);
01294                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes;
01295                 }
01296 
01297                 <font class="keywordflow">if</font> (_Loop)
01298                 {
01299                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: LOOP"</font>, <font class="keyword">this</font>));
01300 
01301                         CFastMem::memcpy(ptr1 + bytes, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a>, bytes1 - bytes);                                    
01302                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes1 - bytes;
01303 
01304                         <font class="keywordflow">if</font> (ptr2)
01305                         {
01306                                 CFastMem::memcpy(ptr2, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes2);                                    
01307                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes2;
01308                         }
01309 
01310                 } 
01311                 <font class="keywordflow">else</font>
01312                 {
01313                         memset(ptr1 + bytes, 0, bytes1 - bytes);                                        
01314                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes1 - bytes;
01315 
01316                         <font class="keywordflow">if</font> (ptr2)
01317                         {
01318                                 memset(ptr2, 0, bytes2);                                        
01319                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> += bytes2;
01320                         }
01321                 }
01322 
01323         }
01324 
01325 
01326 
01327 
01328         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startUnlock);
01329 
01330         <font class="comment">// Unlock the buffer</font>
01331         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
01332 
01333 
01334         <font class="comment">// Update the state variables</font>
01335 
01336         <font class="comment">// Check if we've reached the end of the file</font>
01337         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>) 
01338         {
01339                 <font class="keywordflow">if</font> (_Loop)
01340                 {
01341                         <font class="comment">// If we're looping, start all over again</font>
01342                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: LOOP"</font>, <font class="keyword">this</font>));
01343                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
01344                 }
01345                 <font class="keywordflow">else</font>
01346                 {
01347                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
01348 
01349                         <font class="comment">// Keep track of where tha last sample was written and the position</font>
01350                         <font class="comment">// of the play cursor relative to the end position. if the _EndState</font>
01351                         <font class="comment">// is 0, the play cursor is after the end position, 1 otherwise.</font>
01352                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> = writePos + bytes;
01353                         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
01354                         {
01355                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
01356                         }
01357 
01358                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>)? <a class="code" href="namespaceNLSOUND.html#a86a33">NL_DSOUND_TAIL1</a> : <a class="code" href="namespaceNLSOUND.html#a86a34">NL_DSOUND_TAIL2</a>;
01359 
01360                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: SILENCING"</font>, <font class="keyword">this</font>));
01361                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: ENDSTATE=%d, E=%d, P=%d"</font>, <font class="keyword">this</font>, (<font class="keywordtype">int</font>) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>, playPos));
01362                 }
01363         }
01364 
01365 
01366         <font class="comment">// Update the write pointer</font>
01367         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> += bytes1 + bytes2;
01368         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
01369         {
01370                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>  -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
01371         }
01372  
01373         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: P=%d, W=%d, NW=%d, SZ=%d, BW=%d, S=%d, B=%d"</font>, <font class="keyword">this</font>, playPos, writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>, bytes1 + bytes2));
01374 
01375 
01376 <font class="preprocessor">#if NLSOUND_PROFILE</font>
01377 <font class="preprocessor"></font>        _TotalUpdateSize += bytes1 + bytes2;
01378         _PosTime += CTime::ticksToSecond(startLock - startPos);
01379         _LockTime += CTime::ticksToSecond(startCopy - startLock);
01380         _CopyTime += CTime::ticksToSecond(startUnlock - startCopy);
01381         _UnlockTime += CTime::ticksToSecond(CTime::getPerformanceTime() - startUnlock);
01382         _CopyCount++;
01383 <font class="preprocessor">#endif</font>
01384 <font class="preprocessor"></font>
01385 
01386         <font class="keywordflow">return</font> <font class="keyword">true</font>;
01387 }
01388 
01389 
01390 
01391 
01392 <font class="comment">// ******************************************************************</font>
01393 
<a name="l01394"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c6">01394</a> <font class="keywordtype">bool</font> CSourceDSound::silence()
01395 {
01396         uint8 *ptr1, *ptr2;
01397         DWORD bytes1, bytes2;
01398         DWORD playPos, writePos;
01399         uint32 space;
01400 
01401         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
01402         {
01403                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01404         }
01405                 
01406         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startPos);
01407 
01408         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
01409 
01410         <font class="keywordflow">if</font> (playPos == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>)
01411         {
01412                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01413         }
01414         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>) 
01415         {
01416                 space = playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
01417         }
01418         <font class="keywordflow">else</font>
01419         {
01420                 space = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a> + playPos - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>;
01421         }
01422 
01423         <font class="comment">// Don't bother if the number of samples that can be written is too small.</font>
01424         <font class="keywordflow">if</font> (space &lt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>)
01425         {
01426                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01427         }
01428 
01429                 <font class="comment">// Lock the buffer</font>
01430 
01431         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startLock);
01432 
01433         <font class="keywordflow">if</font> (!<a class="code" href="classNLSOUND_1_1CSourceDSound.html#c1">lock</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r0">_UpdateCopySize</a>, ptr1, bytes1, ptr2, bytes2))
01434         {
01435                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01436         }
01437 
01438 
01439         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startCopy);
01440    
01441         <font class="comment">// Silence the buffer</font>
01442         memset(ptr1, 0, bytes1);
01443         memset(ptr2, 0, bytes2);
01444 
01445                 <font class="comment">// Unlock the buffer</font>
01446 
01447         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startUnlock);
01448 
01449         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
01450 
01451 
01452         <font class="comment">// Update the next write position</font>
01453         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> += bytes1 + bytes2;
01454         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
01455         {
01456                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>  -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
01457         }
01458 
01459 
01460         <font class="comment">// Check if all the samples in the buffer are played</font>
01461         <font class="keywordflow">if</font> ((playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> == <a class="code" href="namespaceNLSOUND.html#a86a34">NL_DSOUND_TAIL2</a>)) 
01462         {
01463                 <font class="comment">// The buffer played passed the last sample. Flag the source as stopped.</font>
01464                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = <a class="code" href="namespaceNLSOUND.html#a86a35">NL_DSOUND_ENDED</a>;
01465                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] SLNC: ENDED"</font>, <font class="keyword">this</font>));
01466 
01467                 <font class="comment">// If the buffer was playing, mark it as stopped</font>
01468                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>)
01469                 {
01470                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
01471                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] SLNC: STOPPED"</font>, <font class="keyword">this</font>));
01472                 }
01473         }
01474         <font class="keywordflow">else</font> <font class="keywordflow">if</font> ((playPos &lt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> == <a class="code" href="namespaceNLSOUND.html#a86a33">NL_DSOUND_TAIL1</a>))
01475         {
01476                 <font class="comment">// The play cursor wrapped around the buffer and is now before the end position</font>
01477                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = <a class="code" href="namespaceNLSOUND.html#a86a34">NL_DSOUND_TAIL2</a>;
01478                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FILL: ENDSTATE=%d, E=%d, P=%d"</font>, <font class="keyword">this</font>, (<font class="keywordtype">int</font>) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>, playPos));
01479         }
01480 
01481 
01482         <font class="comment">// Update the amount of silence written</font>
01483         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> += bytes1 + bytes2;
01484         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
01485         {
01486                 <font class="comment">// The buffer is now completely filled with silence</font>
01487                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a29">NL_DSOUND_SILENCED</a>;
01488                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] SLNC: SILENCED"</font>, <font class="keyword">this</font>));
01489 
01490                 <font class="comment">// If the buffer was playing, mark it as stopped</font>
01491                 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> == <a class="code" href="namespaceNLSOUND.html#a85a30">NL_DSOUND_PLAYING</a>)
01492                 {
01493                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
01494                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] SLNC: STOPPED*"</font>, <font class="keyword">this</font>));
01495                 }
01496         }
01497 
01498         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] SLNC: P=%d, W=%d, NW=%d, SZ=%d, BW=%d, S=%d, B=%d"</font>, <font class="keyword">this</font>, playPos, writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>, bytes1 + bytes2));
01499 
01500 
01501 <font class="preprocessor">#if NLSOUND_PROFILE</font>
01502 <font class="preprocessor"></font>        _TotalUpdateSize += bytes1 + bytes2;
01503         _PosTime += CTime::ticksToSecond(startLock - startPos);
01504         _LockTime += CTime::ticksToSecond(startCopy - startLock);
01505         _CopyTime += CTime::ticksToSecond(startUnlock - startCopy);
01506         _UnlockTime += CTime::ticksToSecond(CTime::getPerformanceTime() - startUnlock);
01507         _CopyCount++;
01508 <font class="preprocessor">#endif</font>
01509 <font class="preprocessor"></font>
01510         <font class="keywordflow">return</font> <font class="keyword">true</font>;
01511 }
01512 
01513 
01514 <font class="comment">// ******************************************************************</font>
01515 
<a name="l01524"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c4">01524</a>  <font class="keywordtype">void</font> CSourceDSound::getFadeOutSize(uint32 writePos, uint32 &amp;xfadeSize, sint16* &amp;in1, uint32 &amp;writtenTooMuch)
01525 {
01526         <font class="comment">// The number of samples over which we will do the crossfade</font>
01527         xfadeSize = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r5">_XFadeSize</a>;
01528 
01529 
01530         <font class="comment">// The tricky part of this method is to figger out how many samples of the old</font>
01531         <font class="comment">// buffer were written after the write cursor and figger our with what position </font>
01532         <font class="comment">// in the old buffer the write cursor corresponds. We have to consider the following</font>
01533         <font class="comment">// cases:</font>
01534         <font class="comment">//</font>
01535         <font class="comment">// - the old buffer just looped, </font>
01536         <font class="comment">// - the old buffer is finished, but stil has samples in the DirectSound buffer</font>
01537         <font class="comment">// - the default case, i.e. the old buffer is playing somewhere in the middle.</font>
01538         <font class="comment">//</font>
01539 
01540         <font class="comment">// How many bytes did we write after the write position?</font>
01541 
01542         writtenTooMuch = <a class="code" href="source__dsound_8cpp.html#a3">NLSOUND_DISTANCE</a>(writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>);
01543 
01544         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FADE: TOO=%d"</font>, <font class="keyword">this</font>, writtenTooMuch));
01545 
01546 
01547         uint8* <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> = ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>)-&gt;getData();
01548 
01549         <font class="comment">// If the sound is finished and all the samples are written in the</font>
01550         <font class="comment">// buffer, it's possible that there are still samples after the write</font>
01551         <font class="comment">// position. If this is the case, we have to do a fade out. If there is</font>
01552         <font class="comment">// only silence, we only need to copy without fade.</font>
01553 
01554         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> &gt; 0)
01555         {
01556                 
01557                 <font class="keywordflow">if</font> (writtenTooMuch &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>)
01558                 {
01559                         writtenTooMuch -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>;
01560                         in1 = (sint16*) (<a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - writtenTooMuch) ;
01561 
01562                         <font class="keywordflow">if</font> (writtenTooMuch &lt; 2 * xfadeSize)
01563                         {
01564                                 xfadeSize = writtenTooMuch / 2;
01565                         }
01566                 }
01567                 <font class="keywordflow">else</font>
01568                 {
01569                         xfadeSize = 0;                                                    
01570                 }
01571 
01572                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FADE: END, TOO=%d, S=%d, F=%d"</font>, <font class="keyword">this</font>, writtenTooMuch, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>, xfadeSize));
01573         }
01574         
01575         <font class="comment">// If the sound looped, it's possible that the number of samples</font>
01576         <font class="comment">// written is small. In that case, the write cursor is still inside</font>
01577         <font class="comment">// the previous loop. All we have to do is fade out the last part</font>
01578         <font class="comment">// of the previous loop. </font>
01579 
01580         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (writtenTooMuch &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>)
01581         {
01582 
01583                 writtenTooMuch -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>;
01584 
01585                 in1 = (sint16*) (<a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - writtenTooMuch) ;
01586 
01587                 <font class="keywordflow">if</font> (writtenTooMuch &lt; 2 * xfadeSize)
01588                 {
01589                         xfadeSize = writtenTooMuch / 2;
01590                 }
01591 
01592                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FADE: LOOPED, TOO=%d, F=%d"</font>, <font class="keyword">this</font>, writtenTooMuch, xfadeSize));
01593 
01594         }
01595 
01596         <font class="comment">// This is the default case. Simply fade from the previous to the next buffer.</font>
01597         <font class="comment">// The variable writtenTooMuch tells us how much of the previous sound has</font>
01598         <font class="comment">// been written after the current write cursor. We just have to check there</font>
01599         <font class="comment">// are enough samples available for the fade.</font>
01600 
01601         <font class="keywordflow">else</font>
01602         {
01603                 in1 = (sint16*) (<a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + (sint32) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> - writtenTooMuch);
01604 
01605                 <font class="keywordflow">if</font> (xfadeSize &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>)
01606                 {
01607                         xfadeSize = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>;
01608                 }
01609 
01610                 <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FADE: STD, TOO=%d, F=%d"</font>, <font class="keyword">this</font>, writtenTooMuch, xfadeSize));
01611         }
01612 }
01613 
01614 
01615 
01616 <font class="comment">// ******************************************************************</font>
01617 
<a name="l01618"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c7">01618</a> <font class="keywordtype">void</font> CSourceDSound::crossFade()
01619 {
01620         uint8 *ptr1, *ptr2;
01621         DWORD bytes1, bytes2;
01622         DWORD playPos, writePos;
01623         uint32 i;
01624 
01625 
01626 
01627         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> == NULL)
01628         {
01629                 <font class="keywordflow">return</font>;
01630         }
01631 
01632         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
01633         {
01634                 <font class="keywordflow">return</font>;
01635         }
01636 
01637 
01638         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(start); 
01639         
01640 
01641         EnterCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>); 
01642 
01643 
01644 
01645         <font class="comment">// The source is currently playing an other buffer. We will do a hot</font>
01646         <font class="comment">// swap between the old and the new buffer. DirectSound maintains two</font>
01647         <font class="comment">// cursors into the buffer: the play cursor and the write cursor.</font>
01648         <font class="comment">// The write cursor indicates where we can start writing the new samples.</font>
01649         <font class="comment">// To avoid clicks, we have to do a cross fade between the old buffer and</font>
01650         <font class="comment">// the new buffer.</font>
01651         
01652         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
01653 
01654 
01655         <font class="comment">// The number of bytes we will write to the DirectSound buffer</font>
01656         uint32 bytes = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r1">_SwapCopySize</a>;
01657         <font class="keywordflow">if</font> (bytes &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>-&gt;getSize())
01658         {
01659                 bytes = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>-&gt;getSize();
01660         }
01661 
01662 
01663         <font class="comment">// Lock the DirectSound buffer</font>
01664 
01665         <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Lock(writePos, bytes, (LPVOID*) &amp;ptr1, &amp;bytes1, (LPVOID*) &amp;ptr2, &amp;bytes2, 0)))
01666         {
01667                 LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>);
01668                 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to lock the DirectSound secondary buffer"</font>);
01669         }
01670 
01671         
01672         sint16* in1;
01673         uint8* data1 = ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>)-&gt;getData();
01674         uint8* data2 = ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>)-&gt;getData();
01675         sint16* in2 = (sint16*) data2;
01676         sint16* out = (sint16*) ptr1;
01677 
01678         <font class="comment">// The number of samples over which we will do the crossfade</font>
01679         uint32 xfadeSize;
01680         uint32 xfadeByteSize;
01681         uint32 writtenTooMuch;
01682 
01683         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c4">getFadeOutSize</a>(writePos, xfadeSize, in1, writtenTooMuch);
01684         xfadeByteSize = 2 * xfadeSize;
01685 
01686 <font class="preprocessor">#define MIX 1</font>
01687 <font class="preprocessor"></font>
01688 
01689 <font class="preprocessor">#if MIX</font>
01690 <font class="preprocessor"></font>        <font class="keywordtype">float</font> incr, amp1, amp2;
01691 
01692         <font class="keywordflow">if</font> (xfadeSize == 0)
01693         {
01694                 amp1 = 0.0f;
01695                 amp2 = 1.0f;
01696                 incr = 0.0f;
01697         }
01698         <font class="keywordflow">else</font>
01699         {
01700                 amp1 = 1.0f;
01701                 amp2 = 0.0f;
01702                 incr = 1.0f / xfadeSize;
01703         }
01704 
01705 <font class="preprocessor">#else</font>
01706 <font class="preprocessor"></font>        <font class="keywordtype">float</font> incr, amp1;
01707 
01708         <font class="keywordflow">if</font> (xfadeSize == 0)
01709         {
01710                 amp1 = 0.0f;
01711                 incr = 0.0f;
01712         }
01713         <font class="keywordflow">else</font>
01714         {
01715                 amp1 = 1.0f;
01716                 incr = 1.0f / xfadeSize;
01717         }
01718 
01719 <font class="preprocessor">#endif</font>
01720 <font class="preprocessor"></font>
01721 
01722         <font class="comment">// Start copying the samples</font>
01723         
01724 
01725         <font class="comment">// In the first case, the cross fade is completely contained in the first buffer</font>
01726         <font class="comment">// pointed to by ptr1.</font>
01727         <font class="keywordflow">if</font> (xfadeByteSize &lt; bytes1)
01728         {
01729 
01730                 <font class="comment">// Do cross fade</font>
01731 
01732                 <font class="keywordflow">for</font> (i = 0; i &lt; xfadeSize; i++) 
01733                 {
01734 <font class="preprocessor">#if MIX</font>
01735 <font class="preprocessor"></font>                        out[i] = (sint16) (amp1 * in1[i] + amp2 * in2[i]);
01736                         amp1 -= incr;
01737                         amp2 += incr;
01738 <font class="preprocessor">#else</font>
01739 <font class="preprocessor"></font>                        out[i] = (sint16) (amp1 * in1[i]);
01740                         amp1 -= incr;
01741 <font class="preprocessor">#endif</font>
01742 <font class="preprocessor"></font>                }
01743 
01744                 <font class="comment">// Copy remaining samples</font>
01745 
01746 <font class="preprocessor">#if MIX</font>
01747 <font class="preprocessor"></font>                CFastMem::memcpy(ptr1 + xfadeByteSize, data2 + xfadeByteSize, bytes1 - xfadeByteSize);
01748                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes1;
01749 <font class="preprocessor">#else</font>
01750 <font class="preprocessor"></font>                CFastMem::memcpy(ptr1 + xfadeByteSize, data2, bytes1 - xfadeByteSize);
01751                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes1 - xfadeByteSize;
01752 <font class="preprocessor">#endif</font>
01753 <font class="preprocessor"></font>
01754                 <font class="keywordflow">if</font> (ptr2)
01755                 {
01756                         CFastMem::memcpy(ptr2, data2 + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes2);
01757                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes2;
01758                 }
01759 
01760         }
01761 
01762         <font class="comment">// In the second case, the cross fade stretches over the first and the second buffers.</font>
01763         <font class="keywordflow">else</font>
01764         {
01765 
01766                 uint32 fade1 = bytes1 / 2;
01767                 uint32 fade2 = xfadeSize - fade1;
01768 
01769                 <font class="comment">// Do cross fade</font>
01770 
01771                 <font class="comment">// Part 1, start at ptr1</font>
01772                 <font class="keywordflow">for</font> (i = 0; i &lt; fade1; i++) 
01773                 {
01774 <font class="preprocessor">#if MIX</font>
01775 <font class="preprocessor"></font>                        out[i] = (sint16) (amp1 * in1[i] + amp2 * in2[i]);
01776                         amp1 -= incr;
01777                         amp2 += incr;
01778 <font class="preprocessor">#else</font>
01779 <font class="preprocessor"></font>                        out[i] = (sint16) (amp1 * in1[i]);
01780                         amp1 -= incr;
01781 <font class="preprocessor">#endif</font>
01782 <font class="preprocessor"></font>                }
01783 <font class="preprocessor">#if MIX</font>
01784 <font class="preprocessor"></font>                <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes1;
01785 <font class="preprocessor">#else</font>
01786 <font class="preprocessor"></font>                <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
01787 <font class="preprocessor">#endif</font>
01788 <font class="preprocessor"></font>
01789 
01790                 <font class="keywordflow">if</font> (ptr2)
01791                 {
01792                         out = (sint16*) ptr2;
01793 
01794                         <font class="comment">// Part 2, ontinue at ptr2</font>
01795                         <font class="keywordflow">for</font> (uint32 k = 0; i &lt; xfadeSize; i++, k++) 
01796                         {
01797 <font class="preprocessor">#if MIX</font>
01798 <font class="preprocessor"></font>                                out[k] = (sint16) (amp1 * in1[i] + amp2 * in2[i]);
01799                                 amp1 -= incr;
01800                                 amp2 += incr;
01801 <font class="preprocessor">#else</font>
01802 <font class="preprocessor"></font>                                out[k] = (sint16) (amp1 * in1[i]);
01803                                 amp1 -= incr;
01804 <font class="preprocessor">#endif</font>
01805 <font class="preprocessor"></font>                        }
01806 
01807                         <font class="comment">// Copy remaining samples</font>
01808 <font class="preprocessor">#if MIX</font>
01809 <font class="preprocessor"></font>                        CFastMem::memcpy(ptr2 + 2 * k, data2 + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> + 2 * k, bytes2 - 2 * k);
01810                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes2;
01811 <font class="preprocessor">#else</font>
01812 <font class="preprocessor"></font>                        CFastMem::memcpy(ptr2 + 2 * k, data2, bytes2 - 2 * k);
01813                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes2 - 2 * k;
01814 <font class="preprocessor">#endif</font>
01815 <font class="preprocessor"></font>                }
01816         }
01817 
01818 
01819         <font class="comment">// Unlock the DirectSound buffer</font>
01820         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
01821 
01822         
01823         <font class="comment">// Update the state variables</font>
01824 
01825         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = 0;
01826 
01827         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> = (writePos + bytes1 + bytes2);
01828         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
01829         {
01830                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
01831         }
01832 
01833 
01834 
01835         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a27">NL_DSOUND_FILLING</a>;
01836 
01837 
01838         <font class="comment">// Swap the two buffers</font>
01839         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>-&gt;getSize();
01840         <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a>;
01841         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o2">_SwapBuffer</a> = 0;
01842 
01843         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_8">setPitch</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o14">_Freq</a>);
01844 
01845         <font class="comment">// Check if we've reached the end of the file</font>
01846         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>) 
01847         {
01848                 <font class="keywordflow">if</font> (_Loop)
01849                 {
01850                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
01851                 }
01852                 <font class="keywordflow">else</font>
01853                 {
01854                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
01855                 }
01856         }
01857 
01858 
01859         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] XFADE"</font>, <font class="keyword">this</font>));
01860         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] P=%d, W=%d, NW=%d, SZ=%d, BW=%d, B=%d"</font>, <font class="keyword">this</font>, playPos, writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes1 + bytes2));
01861 
01862         
01863 
01864         LeaveCriticalSection(&amp;<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o8">_CriticalSection</a>);
01865 
01866 
01867 <font class="preprocessor">#if NLSOUND_PROFILE</font>
01868 <font class="preprocessor"></font>        _LastSwapTime = CTime::ticksToSecond(CTime::getPerformanceTime() - start);
01869         _TotalSwapTime += _LastSwapTime;
01870         _MaxSwapTime = (_LastSwapTime &gt; _MaxSwapTime) ? _LastSwapTime : _MaxSwapTime;
01871         _MinSwapTime = (_LastSwapTime &lt; _MinSwapTime) ? _LastSwapTime : _MinSwapTime;
01872         _SwapCount++;
01873 <font class="preprocessor">#endif</font>
01874 <font class="preprocessor"></font>
01875 }
01876 
01877 
01878 
01879 <font class="comment">// ******************************************************************</font>
01880 
<a name="l01881"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c8">01881</a> <font class="keywordtype">void</font> CSourceDSound::fadeOut()
01882 {
01883         uint8 *ptr1, *ptr2;
01884         DWORD bytes1, bytes2;
01885         DWORD playPos, writePos;
01886         uint32 i;
01887 
01888 
01889         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> == NULL)
01890         {
01891                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
01892                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
01893                 <font class="keywordflow">return</font>;
01894         }
01895 
01896         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
01897         {
01898                 <font class="keywordflow">return</font>;
01899         }
01900 
01901         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(start);
01902         
01903 
01904         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
01905 
01906 
01907         <font class="comment">// Lock the DirectSound buffer</font>
01908 
01909         <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Lock(writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r1">_SwapCopySize</a>, (LPVOID*) &amp;ptr1, &amp;bytes1, (LPVOID*) &amp;ptr2, &amp;bytes2, 0)))
01910         {
01911                 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to lock the DirectSound secondary buffer"</font>);
01912         }
01913 
01914         
01915 
01916         <font class="comment">// in1 points to the position in the old buffer where the fade out starts</font>
01917         sint16* in1;
01918         sint16* out = (sint16*) ptr1;
01919 
01920         <font class="comment">// The number of samples over which we will do the crossfade</font>
01921         uint32 xfadeSize;
01922         uint32 xfadeByteSize;
01923         uint32 writtenTooMuch;
01924 
01925         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#c4">getFadeOutSize</a>(writePos, xfadeSize, in1, writtenTooMuch);
01926         xfadeByteSize = 2 * xfadeSize;
01927 
01928         <font class="keywordtype">float</font> amp1, incr;
01929 
01930         <font class="keywordflow">if</font> (xfadeSize == 0)
01931         {
01932                 amp1 = 0.0f;
01933                 incr = 0.0f;
01934         }
01935         <font class="keywordflow">else</font>
01936         {
01937                 amp1 = 1.0f;
01938                 incr = 1.0f / xfadeSize;
01939         }
01940 
01941 
01942         <font class="keywordflow">if</font> (writtenTooMuch &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>)
01943         {
01944                 <font class="comment">// The buffer looped. Count backwards from the end of the file.</font>
01945                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - writtenTooMuch;
01946         }
01947         <font class="keywordflow">else</font>
01948         {
01949                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> -= writtenTooMuch;
01950         }
01951 
01952 
01953         <font class="comment">// Start copying the samples</font>
01954         
01955 
01956         <font class="comment">// In the first case, the fade out is completely contained in the first buffer</font>
01957         <font class="comment">// pointed to by ptr1.</font>
01958         <font class="keywordflow">if</font> (xfadeByteSize &lt; bytes1)
01959         {
01960 
01961                 <font class="comment">// Do cross fade</font>
01962 
01963                 <font class="keywordflow">for</font> (i = 0; i &lt; xfadeSize; i++) 
01964                 {
01965                         out[i] = (sint16) (amp1 * in1[i]);
01966                         amp1 -= incr;
01967                 }
01968 
01969                 <font class="comment">// Copy remaining samples</font>
01970 
01971                 memset(ptr1 + xfadeByteSize, 0, bytes1 - xfadeByteSize);
01972                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes1 - xfadeByteSize;
01973 
01974                 <font class="keywordflow">if</font> (ptr2)
01975                 {
01976                         memset(ptr2, 0, bytes2);
01977                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> += bytes2;
01978                 }
01979 
01980         }
01981 
01982         <font class="comment">// In the second case, the fade out stretches over the first and the second buffers.</font>
01983         <font class="keywordflow">else</font>
01984         {
01985 
01986                 uint32 fade1 = bytes1 / 2;
01987                 uint32 fade2 = xfadeSize - fade1;
01988 
01989                 <font class="comment">// Do cross fade</font>
01990 
01991                 <font class="comment">// Part 1, start at ptr1</font>
01992                 <font class="keywordflow">for</font> (i = 0; i &lt; fade1; i++) 
01993                 {
01994                         out[i] = (sint16) (amp1 * in1[i]);
01995                         amp1 -= incr;
01996                 }
01997 
01998 
01999                 <font class="keywordflow">if</font> (ptr2)
02000                 {
02001                         out = (sint16*) ptr2;
02002 
02003                         <font class="comment">// Part 2, continue at ptr2</font>
02004                         <font class="keywordflow">for</font> (uint32 k = 0; i &lt; xfadeSize; i++, k++) 
02005                         {
02006                                 out[k] = (sint16) (amp1 * in1[i]);
02007                                 amp1 -= incr;
02008                         }
02009 
02010                         <font class="comment">// Clear remaining samples</font>
02011                         memset(ptr2 + 2 * k, 0, bytes2 - 2 * k);
02012                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes2 - 2 * k;
02013                 }
02014 
02015         }
02016 
02017 
02018         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += xfadeByteSize;
02019 
02020 
02021         <font class="comment">// Unlock the DirectSound buffer</font>
02022         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
02023 
02024         
02025         <font class="comment">// Update the next write position</font>
02026         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> = (writePos + bytes1 + bytes2);
02027         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
02028         {
02029                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
02030         }
02031 
02032 
02033         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
02034         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDOU: SILENCING"</font>, <font class="keyword">this</font>));
02035 
02036         <font class="comment">// Keep track of where tha last sample was written and the position</font>
02037         <font class="comment">// of the play cursor relative to the end position. if the _EndState</font>
02038         <font class="comment">// is 0, the play cursor is after the end position, 1 otherwise.</font>
02039         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> = writePos + xfadeSize;
02040         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
02041         {
02042                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
02043         }
02044 
02045         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>)? <a class="code" href="namespaceNLSOUND.html#a86a33">NL_DSOUND_TAIL1</a> : <a class="code" href="namespaceNLSOUND.html#a86a34">NL_DSOUND_TAIL2</a>;
02046         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDOU: ENDSTATE=%d, E=%d, P=%d"</font>, <font class="keyword">this</font>, (<font class="keywordtype">int</font>) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>, playPos));
02047 
02048 
02049         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDOU: P=%d, W=%d, NW=%d, SZ=%d, BW=%d, S=%d, B=%d"</font>, <font class="keyword">this</font>, playPos, writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>, bytes1 + bytes2));
02050 
02051 
02052 
02053 <font class="preprocessor">#if NLSOUND_PROFILE</font>
02054 <font class="preprocessor"></font>        _LastSwapTime = CTime::ticksToSecond(CTime::getPerformanceTime() - start);
02055         _TotalSwapTime += _LastSwapTime;
02056         _MaxSwapTime = (_LastSwapTime &gt; _MaxSwapTime) ? _LastSwapTime : _MaxSwapTime;
02057         _MinSwapTime = (_LastSwapTime &lt; _MinSwapTime) ? _LastSwapTime : _MinSwapTime;
02058         _SwapCount++;
02059 <font class="preprocessor">#endif</font>
02060 <font class="preprocessor"></font>
02061 }
02062 
02063 <font class="comment">// ******************************************************************</font>
02064 
<a name="l02065"></a><a class="code" href="classNLSOUND_1_1CSourceDSound.html#c9">02065</a> <font class="keywordtype">void</font> CSourceDSound::fadeIn()
02066 {
02067         <font class="keywordtype">bool</font> <a class="code" href="driver__opengl__extension__def_8h.html#a400">res</a> = <font class="keyword">false</font>;
02068         uint8 *ptr1, *ptr2;
02069         DWORD bytes1, bytes2;
02070         DWORD playPos, writePos;
02071 
02072 
02073         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a> == NULL)
02074         {
02075                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
02076                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o4">_UserState</a> = <a class="code" href="namespaceNLSOUND.html#a85a32">NL_DSOUND_STOPPED</a>;
02077                 <font class="keywordflow">return</font>;
02078         }
02079 
02080         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a> == 0)
02081         {
02082                 <font class="keywordflow">return</font>;
02083         }
02084 
02085         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startPos);
02086 
02087         <font class="comment">// Set the correct pitch for this sound</font>
02088         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#z970_8">setPitch</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o14">_Freq</a>);
02089 
02090         <font class="comment">// Set the correct volume</font>
02091         <font class="comment">// FIXME: a bit of a hack</font>
02092         <font class="keyword">const</font> CVector &amp;pos = CListenerDSound::instance()-&gt;getPos();
02093         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#a6">updateVolume</a>(pos);
02094 
02095 
02096         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;GetCurrentPosition(&amp;playPos, &amp;writePos);
02097 
02098         uint8* <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> = ((CBufferDSound*) <a class="code" href="classNLSOUND_1_1ISource.html#n0">_Buffer</a>)-&gt;getData();
02099         uint32 available = (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> &lt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>) ? <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a> - <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> : 0;
02100         uint32 bytes = <a class="code" href="source__dsound_8cpp.html#a2">NLSOUND_MIN</a>(<a class="code" href="classNLSOUND_1_1CSourceDSound.html#r1">_SwapCopySize</a>, available);
02101 <font class="comment">//      uint32 clear = _SwapCopySize - available;</font>
02102 
02103 
02104         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = 0;
02105 
02106         <font class="comment">// Lock the buffer</font>
02107 
02108         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startLock);
02109 
02110 
02111         <font class="keywordflow">if</font> (!<a class="code" href="classNLSOUND_1_1CSourceDSound.html#c1">lock</a>(writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r1">_SwapCopySize</a>, ptr1, bytes1, ptr2, bytes2))
02112         {
02113                 <font class="keywordflow">return</font>;
02114         }
02115 
02116 
02117         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startCopy);
02118 
02119         <font class="comment">// Start copying the samples</font>
02120 
02121         <font class="keywordflow">if</font> (bytes1 &lt;= bytes) {
02122 
02123                 CFastMem::memcpy(ptr1, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes1);
02124                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes1;
02125                 bytes -= bytes1;
02126 
02127                 <font class="keywordflow">if</font> (ptr2)
02128                 {
02129                         <font class="keywordflow">if</font> (bytes &gt; 0)
02130                         {
02131                                 CFastMem::memcpy(ptr2, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes);                                    
02132                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes;
02133                         }
02134 
02135                         <font class="keywordflow">if</font> (bytes &lt; bytes2)
02136                         {
02137                                 <font class="keywordflow">if</font> (_Loop)
02138                                 {
02139                                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: LOOP"</font>, <font class="keyword">this</font>));
02140 
02141                                         CFastMem::memcpy(ptr2 + bytes, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a>, bytes2 - bytes); 
02142                                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes2 - bytes;
02143                                 }
02144                                 <font class="keywordflow">else</font>
02145                                 {
02146                                         memset(ptr2 + bytes, 0, bytes2 - bytes); 
02147                                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes2 - bytes;
02148                                 }
02149                         }
02150                 }
02151         }
02152         <font class="keywordflow">else</font>
02153         {
02154                 <font class="keywordflow">if</font> (bytes &gt; 0)
02155                 {
02156                         CFastMem::memcpy(ptr1, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes);
02157                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes;
02158                 }
02159 
02160                 <font class="keywordflow">if</font> (_Loop)
02161                 {
02162                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: LOOP"</font>, <font class="keyword">this</font>));
02163 
02164                         CFastMem::memcpy(ptr1 + bytes, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a>, bytes1 - bytes);                                    
02165                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = bytes1 - bytes;
02166 
02167                         <font class="keywordflow">if</font> (ptr2)
02168                         {
02169                                 CFastMem::memcpy(ptr2, <a class="code" href="driver__opengl__extension__def_8h.html#a394">data</a> + <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, bytes2);                                    
02170                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> += bytes2;
02171                         }
02172                 } 
02173                 <font class="keywordflow">else</font>
02174                 {
02175                         memset(ptr1 + bytes, 0, bytes1 - bytes);                                        
02176                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> = bytes1 - bytes;
02177 
02178                         <font class="keywordflow">if</font> (ptr2)
02179                         {
02180                                 memset(ptr2, 0, bytes2);                                        
02181                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a> += bytes2;
02182                         }
02183                 }
02184         }
02185 
02186 
02187         <a class="code" href="source__dsound_8cpp.html#a0">INITTIME</a>(startUnlock);
02188 
02189         <font class="comment">// Unlock the buffer</font>
02190         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o5">_SecondaryBuffer</a>-&gt;Unlock(ptr1, bytes1, ptr2, bytes2);
02191 
02192 
02193         <font class="comment">// Update the state variables</font>
02194 
02195         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a27">NL_DSOUND_FILLING</a>;
02196         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: FILLING"</font>, <font class="keyword">this</font>));
02197 
02198 
02199         <font class="comment">// Check if we've reached the end of the file</font>
02200         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> == <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>) 
02201         {
02202                 <font class="keywordflow">if</font> (_Loop)
02203                 {
02204                         <font class="comment">// If we're looping, start all over again</font>
02205                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: LOOP"</font>, <font class="keyword">this</font>));
02206                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a> = 0;
02207                 }
02208                 <font class="keywordflow">else</font>
02209                 {
02210                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o6">_SecondaryBufferState</a> = <a class="code" href="namespaceNLSOUND.html#a84a28">NL_DSOUND_SILENCING</a>;
02211 
02212                         <font class="comment">// Keep track of where tha last sample was written and the position</font>
02213                         <font class="comment">// of the play cursor relative to the end position. if the _EndState</font>
02214                         <font class="comment">// is NL_DSOUND_TAIL1, the play cursor is after the end position, </font>
02215                         <font class="comment">// NL_DSOUND_TAIL2 otherwise.</font>
02216                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> = writePos + bytes;
02217                         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
02218                         {
02219                                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a> -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
02220                         }
02221 
02222                         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a> = (playPos &gt; <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>)? <a class="code" href="namespaceNLSOUND.html#a86a33">NL_DSOUND_TAIL1</a> : <a class="code" href="namespaceNLSOUND.html#a86a34">NL_DSOUND_TAIL2</a>;
02223 
02224                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: SILENCING"</font>, <font class="keyword">this</font>));
02225                         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: ENDSTATE=%d, E=%d, P=%d"</font>, <font class="keyword">this</font>, (<font class="keywordtype">int</font>) <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o13">_EndState</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o12">_EndPosition</a>, playPos));
02226                 }
02227         }
02228 
02229 
02230         <font class="comment">// Update the write pointer</font>
02231         <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> = writePos + bytes1 + bytes2;
02232         <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a> &gt;= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>)
02233         {
02234                 <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>  -= <a class="code" href="classNLSOUND_1_1CSourceDSound.html#r6">_SecondaryBufferSize</a>;
02235         }
02236  
02237         <a class="code" href="source__dsound_8cpp.html#a1">DBGPOS</a>((<font class="stringliteral">"[%p] FDIN: P=%d, W=%d, NW=%d, SZ=%d, BW=%d, S=%d, B=%d"</font>, <font class="keyword">this</font>, playPos, writePos, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o9">_NextWritePos</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o1">_BufferSize</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o10">_BytesWritten</a>, <a class="code" href="classNLSOUND_1_1CSourceDSound.html#o11">_SilenceWritten</a>, bytes1 + bytes2));
02238 
02239 
02240 <font class="preprocessor">#if NLSOUND_PROFILE</font>
02241 <font class="preprocessor"></font>        _TotalUpdateSize += bytes1 + bytes2;
02242         _PosTime += CTime::ticksToSecond(startLock - startPos);
02243         _LockTime += CTime::ticksToSecond(startCopy - startLock);
02244         _CopyTime += CTime::ticksToSecond(startUnlock - startCopy);
02245         _UnlockTime += CTime::ticksToSecond(CTime::getPerformanceTime() - startUnlock);
02246         _CopyCount++;
02247 <font class="preprocessor">#endif</font>
02248 <font class="preprocessor"></font>
02249 
02250 }
02251 
02252 
02253 
02254 } <font class="comment">// NLSOUND</font>
</pre></div>

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