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<hr><h1>sound_driver_dsound.cpp</h1><a href="sound__driver__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="comment">// The one and only INITGUID</font>
<a name="l00028"></a><a class="code" href="sound__driver__dsound_8cpp.html#a0">00028</a> <font class="preprocessor">#define INITGUID</font>
00029 <font class="preprocessor"></font>
00030 <font class="preprocessor">#include "<a class="code" href="stddsound_8h.html">stddsound.h</a>"</font>
00031
00032
00033 <font class="preprocessor">#include "<a class="code" href="sound__driver__dsound_8h.html">sound_driver_dsound.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="listener__dsound_8h.html">listener_dsound.h</a>"</font>
00035 <font class="preprocessor">#include <math.h></font>
00036
00037
00038 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00039 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00040
00041
00042 <font class="keyword">namespace </font>NLSOUND {
00043
<a name="l00044"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r0">00044</a> CSoundDriverDSound* CSoundDriverDSound::_Instance = NULL;
<a name="l00045"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r1">00045</a> uint32 CSoundDriverDSound::_TimerPeriod = 100;
00046 HINSTANCE <a class="code" href="namespaceNLSOUND.html#a25">CSoundDriverDllHandle</a> = 0;
00047 HWND <a class="code" href="namespaceNLSOUND.html#a26">CSoundDriverWnd</a> = 0;
00048
00049
00050 <font class="comment">// ******************************************************************</font>
00051 <font class="comment">// The main entry of the DLL. It's used to get a hold of the hModule handle.</font>
00052
00053 BOOL WINAPI <a class="code" href="namespaceNLSOUND.html#a76">DllMain</a>(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
00054 {
00055 <a class="code" href="namespaceNLSOUND.html#a25">CSoundDriverDllHandle</a> = (HINSTANCE) hModule;
00056 <font class="keywordflow">return</font> TRUE;
00057 }
00058
00059
00060 <font class="comment">// ******************************************************************</font>
00061 <font class="comment">// The event handling procedure of the invisible window created below. </font>
00062
00063 <font class="keywordtype">long</font> FAR PASCAL <a class="code" href="namespaceNLSOUND.html#a77">CSoundDriverCreateWindowProc</a>(HWND hWnd, <font class="keywordtype">unsigned</font> message, WPARAM wParam, LPARAM lParam)
00064 {
00065 <font class="keywordflow">return</font> DefWindowProc(hWnd, message, wParam, lParam);
00066 }
00067
00068 <font class="comment">// ******************************************************************</font>
00069
00070 <a class="code" href="namespaceNLSOUND.html#a78">__declspec</a>(dllexport) ISoundDriver *NLSOUND_createISoundDriverInstance()
00071 {
00072 <font class="keyword">static</font> <font class="keywordtype">bool</font> Registered = <font class="keyword">false</font>;
00073
00074 <font class="keywordflow">if</font> (!Registered)
00075 {
00076 <font class="comment">// Don't ask me why we have to create a window to do sound!</font>
00077 <font class="comment">// echo <your comment> | mail support@microsoft.com -s "F#%@cking window"</font>
00078 WNDCLASS myClass;
00079 myClass.hCursor = LoadCursor( NULL, IDC_ARROW );
00080 myClass.hIcon = NULL;
00081 myClass.lpszMenuName = (LPSTR) NULL;
00082 myClass.lpszClassName = (LPSTR) <font class="stringliteral">"CSoundDriver"</font>;
00083 myClass.hbrBackground = (HBRUSH)(COLOR_WINDOW);
00084 myClass.hInstance = <a class="code" href="namespaceNLSOUND.html#a25">CSoundDriverDllHandle</a>;
00085 myClass.style = CS_GLOBALCLASS;
00086 myClass.lpfnWndProc = <a class="code" href="namespaceNLSOUND.html#a77">CSoundDriverCreateWindowProc</a>;
00087 myClass.cbClsExtra = 0;
00088 myClass.cbWndExtra = 0;
00089
00090 <font class="keywordflow">if</font> (!RegisterClass(&myClass))
00091 {
00092 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Failed to initialize the sound driver (RegisterClass)"</font>);
00093 <font class="keywordflow">return</font> 0;
00094 }
00095
00096 Registered = <font class="keyword">true</font>;
00097 }
00098
00099 <a class="code" href="namespaceNLSOUND.html#a26">CSoundDriverWnd</a> = CreateWindow((LPSTR) <font class="stringliteral">"CSoundDriver"</font>, (LPSTR) <font class="stringliteral">"CSoundDriver"</font>, WS_OVERLAPPEDWINDOW,
00100 CW_USEDEFAULT, CW_USEDEFAULT, 400, 300, (HWND) NULL, (HMENU) NULL,
00101 <a class="code" href="namespaceNLSOUND.html#a25">CSoundDriverDllHandle</a>, (LPSTR) NULL);
00102
00103 <font class="keywordflow">if</font> (<a class="code" href="namespaceNLSOUND.html#a26">CSoundDriverWnd</a> == NULL)
00104 {
00105 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Failed to initialize the sound driver (CreateWindow)"</font>);
00106 <font class="keywordflow">return</font> 0;
00107 }
00108
00109 CSoundDriverDSound *driver = <font class="keyword">new</font> CSoundDriverDSound();
00110 driver->init(<a class="code" href="namespaceNLSOUND.html#a26">CSoundDriverWnd</a>);
00111
00112 <font class="keywordflow">return</font> driver;
00113 }
00114
00115 <font class="comment">// ******************************************************************</font>
00116
00117 <a class="code" href="namespaceNLSOUND.html#a78">__declspec</a>(dllexport) uint32 NLSOUND_interfaceVersion()
00118 {
00119 <font class="keywordflow">return</font> ISoundDriver::InterfaceVersion;
00120 }
00121
00122 <font class="comment">// ******************************************************************</font>
00123
00124 <a class="code" href="namespaceNLSOUND.html#a78">__declspec</a>(dllexport) <font class="keywordtype">void</font> NLSOUND_outputProfile(ostream &out)
00125 {
00126 CSoundDriverDSound::instance()->writeProfile(out);
00127 }
00128
00129
00130
00131
00132
00133 <font class="comment">// ******************************************************************</font>
00134
<a name="l00135"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a0">00135</a> CSoundDriverDSound::CSoundDriverDSound() : ISoundDriver()
00136 {
00137 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r0">_Instance</a> == NULL )
00138 {
00139 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r0">_Instance</a> = <font class="keyword">this</font>;
00140
00141 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a> = NULL;
00142 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> = NULL;
00143 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o4">_SourceCount</a> = 0;
00144 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o5">_TimerID</a> = NULL;
00145
00146 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00147 <font class="preprocessor"></font> _TimerIntervalCount = 0;
00148 _TotalTime = 0.0;
00149 _TotalUpdateTime = 0.0;
00150 _UpdateCount = 0;
00151 _UpdateSources = 0;
00152 _UpdateExec = 0;
00153 <font class="preprocessor">#endif</font>
00154 <font class="preprocessor"></font>
00155 }
00156 <font class="keywordflow">else</font>
00157 {
00158 <a class="code" href="debug_8h.html#a3">nlerror</a>(<font class="stringliteral">"Sound driver singleton instanciated twice"</font>);
00159 }
00160 }
00161
00162 <font class="comment">// ******************************************************************</font>
00163
<a name="l00164"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a1">00164</a> CSoundDriverDSound::~CSoundDriverDSound()
00165 {
00166 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Destroying DirectSound driver"</font>);
00167
00168 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o5">_TimerID</a> != NULL)
00169 {
00170 timeKillEvent(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o5">_TimerID</a>);
00171 timeEndPeriod(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o6">_TimerResolution</a>);
00172 }
00173
00174
00175 <font class="comment">// Assure that the remaining sources have released all their DSBuffers </font>
00176 <font class="comment">// before closing down DirectSound</font>
00177 set<CSourceDSound*>::iterator iter;
00178
00179 <font class="keywordflow">for</font> (iter = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.begin(); iter != <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.end(); iter++)
00180 {
00181 (*iter)->release();
00182 }
00183
00184
00185 <font class="comment">// Assure that the listener has released all resources before closing </font>
00186 <font class="comment">// down DirectSound</font>
00187 <font class="keywordflow">if</font> (CListenerDSound::instance() != 0)
00188 {
00189 CListenerDSound::instance()->release();
00190 }
00191
00192
00193 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> != NULL)
00194 {
00195 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>->Release();
00196 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> = NULL;
00197 }
00198
00199 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a> != NULL)
00200 {
00201 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->Release();
00202 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a> = NULL;
00203 }
00204
00205 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r0">_Instance</a> = 0;
00206 }
00207
00208 <font class="comment">// ******************************************************************</font>
00209
<a name="l00210"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html">00210</a> <font class="keyword">class </font>CDeviceDescription
00211 {
00212 <font class="keyword">public</font>:
00213
00214 <font class="keyword">static</font> <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a0">CDeviceDescription</a>* <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#p0">_List</a>;
00215
<a name="l00216"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a0">00216</a> <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a0">CDeviceDescription</a>(LPGUID guid, <font class="keyword">const</font> <font class="keywordtype">char</font>* descr)
00217 {
00218 <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m2">_Guid</a> = guid;
00219 <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m0">_Description</a> = strdup(descr);
00220 <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m1">_Next</a> = _List;
00221 _List = <font class="keyword">this</font>;
00222 }
00223
<a name="l00224"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a1">00224</a> <font class="keyword">virtual</font> <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a1">~CDeviceDescription</a>()
00225 {
00226 <font class="keywordflow">if</font> (_Description)
00227 {
00228 free(<a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m0">_Description</a>);
00229 }
00230 <font class="keywordflow">if</font> (_Next)
00231 {
00232 <font class="keyword">delete</font> <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m1">_Next</a>;
00233 }
00234 }
00235
<a name="l00236"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m0">00236</a> <font class="keywordtype">char</font>* <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m0">_Description</a>;
<a name="l00237"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m1">00237</a> <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#a0">CDeviceDescription</a>* <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m1">_Next</a>;
<a name="l00238"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m2">00238</a> LPGUID <a class="code" href="classNLSOUND_1_1CDeviceDescription.html#m2">_Guid</a>;
00239 };
00240
<a name="l00241"></a><a class="code" href="classNLSOUND_1_1CDeviceDescription.html#p0">00241</a> CDeviceDescription* CDeviceDescription::_List = 0;
00242
00243
00244 BOOL CALLBACK <a class="code" href="namespaceNLSOUND.html#a79">CSoundDriverDSoundEnumCallback</a>(LPGUID guid, LPCSTR description, PCSTR module, LPVOID context)
00245 {
00246 <font class="keyword">new</font> CDeviceDescription(guid, description);
00247 <font class="keywordflow">return</font> TRUE;
00248 }
00249
00250 <font class="comment">// ******************************************************************</font>
00251
<a name="l00252"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a3">00252</a> <font class="keywordtype">bool</font> CSoundDriverDSound::init(HWND wnd)
00253 {
00254 <font class="keywordflow">if</font> (FAILED(DirectSoundEnumerate(<a class="code" href="namespaceNLSOUND.html#a79">CSoundDriverDSoundEnumCallback</a>, <font class="keyword">this</font>)))
00255 {
00256 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to enumerate the DirectSound devices"</font>);
00257 }
00258
00259 <font class="comment">// Create a DirectSound object and set the cooperative level.</font>
00260
00261 <font class="keywordflow">if</font> (DirectSoundCreate(NULL, &<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>, NULL) != DS_OK)
00262 {
00263 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to create the DirectSound object"</font>);
00264 }
00265
00266
00267 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->SetCooperativeLevel(wnd, DSSCL_PRIORITY) != DS_OK)
00268 {
00269 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to set the cooperative level"</font>);
00270 }
00271
00272
00273 <font class="comment">// Analyse the capabilities of the sound driver/device</font>
00274
00275 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o2">_Caps</a>.dwSize = <font class="keyword">sizeof</font>(_Caps);
00276
00277 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->GetCaps(&<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o2">_Caps</a>) != DS_OK)
00278 {
00279 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to query the sound device caps"</font>);
00280 }
00281
00282
00283 <font class="comment">// Create primary buffer </font>
00284
00285 DSBUFFERDESC desc;
00286
00287 ZeroMemory(&desc, <font class="keyword">sizeof</font>(DSBUFFERDESC));
00288 desc.dwSize = <font class="keyword">sizeof</font>(DSBUFFERDESC);
00289
00290
00291 <font class="comment">// First, try to allocate a 3D hardware buffer.</font>
00292 <font class="comment">// If we can't get a 3D hardware buffer, use a 2D hardware buffer.</font>
00293 <font class="comment">// As last option, use a 2D software buffer.</font>
00294
00295 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a9">countHw3DBuffers</a>() > 0)
00296 {
00297 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Primary buffer: Allocating 3D buffer in hardware"</font>);
00298 desc.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_LOCHARDWARE | DSBCAPS_CTRL3D | DSBCAPS_CTRLVOLUME;
00299 }
00300 <font class="keywordflow">else</font>
00301 {
00302 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Primary buffer: Allocating 3D buffer in software"</font>);
00303 desc.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_LOCSOFTWARE | DSBCAPS_CTRL3D | DSBCAPS_CTRLVOLUME;
00304 desc.guid3DAlgorithm = DS3DALG_NO_VIRTUALIZATION;
00305 }
00306
00307
00308 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->CreateSoundBuffer(&desc, &<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>, NULL) != DS_OK)
00309 {
00310
00311 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"Primary buffer: Failed to create a buffer with 3D capabilities."</font>);
00312
00313 ZeroMemory(&desc, <font class="keyword">sizeof</font>(DSBUFFERDESC));
00314 desc.dwSize = <font class="keyword">sizeof</font>(DSBUFFERDESC);
00315
00316 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a10">countHw2DBuffers</a>() > 0)
00317 {
00318 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Primary buffer: Allocating 2D buffer in hardware"</font>);
00319 desc.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_LOCHARDWARE | DSBCAPS_CTRLVOLUME;
00320 }
00321 <font class="keywordflow">else</font>
00322 {
00323 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Primary buffer: Allocating 2D buffer in software"</font>);
00324 desc.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_LOCSOFTWARE | DSBCAPS_CTRLVOLUME;
00325 }
00326
00327 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->CreateSoundBuffer(&desc, &<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>, NULL) != DS_OK)
00328 {
00329 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to create the primary buffer"</font>);
00330 }
00331 }
00332
00333
00334 <font class="comment">// Set the format of the primary buffer</font>
00335
00336 WAVEFORMATEX <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>;
00337
00338 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.cbSize = <font class="keyword">sizeof</font>(WAVEFORMATEX);
00339
00340 <font class="comment">// Make sure the sound card accepts the default settings.</font>
00341 <font class="comment">// For now, only the default settings are accepted. Fallback</font>
00342 <font class="comment">// strategy will be handled later.</font>
00343
00344 <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o2">_Caps</a>.dwMinSecondarySampleRate > 22050) && (22050 > <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o2">_Caps</a>.dwMaxSecondarySampleRate)) {
00345 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported sample rate range"</font>);
00346 }
00347
00348 <font class="keywordflow">if</font> ((<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o2">_Caps</a>.dwFlags & DSCAPS_PRIMARY16BIT) == 0) {
00349 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported sample size [16bits]"</font>);
00350 }
00351
00352 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample = 16;
00353 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nChannels = 1;
00354 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nSamplesPerSec = 22050;
00355 <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;
00356 <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;
00357 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wFormatTag = WAVE_FORMAT_PCM;
00358
00359
00360 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>->SetFormat(&<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>) != DS_OK)
00361 {
00362 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to create set the format of the primary buffer"</font>);
00363 }
00364
00365
00366 uint32 numBuffers = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a9">countHw3DBuffers</a>();
00367 <font class="keywordflow">if</font> (numBuffers == 0)
00368 {
00369 numBuffers = 31;
00370 }
00371
00372 <font class="comment">/*</font>
00373 <font class="comment"> _Sources = new CSourceDSound*[numBuffers];</font>
00374 <font class="comment"></font>
00375 <font class="comment"></font>
00376 <font class="comment"> for (uint i = 0; i < numBuffers; i++) </font>
00377 <font class="comment"> {</font>
00378 <font class="comment"> _Sources[i] = 0;</font>
00379 <font class="comment"> }</font>
00380 <font class="comment"></font>
00381 <font class="comment"> try</font>
00382 <font class="comment"> {</font>
00383 <font class="comment"> for (i = 0; i < numBuffers; i++) </font>
00384 <font class="comment"> {</font>
00385 <font class="comment"> _Sources[i] = new CSourceDSound(i);</font>
00386 <font class="comment"> _Sources[i]->init(_DirectSound);</font>
00387 <font class="comment"> _SourceCount++;</font>
00388 <font class="comment"> }</font>
00389 <font class="comment"> }</font>
00390 <font class="comment"> catch (ESoundDriver& e)</font>
00391 <font class="comment"> {</font>
00392 <font class="comment"> // Okay, here's the situation: I'm listening to WinAmp while debugging.</font>
00393 <font class="comment"> // The caps told me there were 31 buffers available. In reality, there were</font>
00394 <font class="comment"> // only 30 available because WinAmp was using one. Somehow DirectSound didn't</font>
00395 <font class="comment"> // notice. So when creating buffer 31, an exception was thrown. </font>
00396 <font class="comment"> // If something like this happens, don't bother and go on with the buffers we've </font>
00397 <font class="comment"> // got. If no buffers are created at all, throw the exception again.</font>
00398 <font class="comment"></font>
00399 <font class="comment"> if (_Sources == 0)</font>
00400 <font class="comment"> {</font>
00401 <font class="comment"> throw e;</font>
00402 <font class="comment"> }</font>
00403 <font class="comment"> }</font>
00404 <font class="comment"></font>
00405 <font class="comment">*/</font>
00406
00407
00408 TIMECAPS tcaps;
00409
00410 timeGetDevCaps(&tcaps, <font class="keyword">sizeof</font>(TIMECAPS));
00411 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o6">_TimerResolution</a> = (tcaps.wPeriodMin > 10)? tcaps.wPeriodMin : 10;
00412 timeBeginPeriod(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o6">_TimerResolution</a>);
00413
00414
00415
00416 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00417 <font class="preprocessor"></font> <font class="keywordflow">for</font> (uint i = 0; i < 1024; i++)
00418 {
00419 _TimerInterval[i] = 0;
00420 }
00421
00422 _TimerDate = CTime::getPerformanceTime();
00423 <font class="preprocessor">#endif</font>
00424 <font class="preprocessor"></font>
00425
00426
00427
00428 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o5">_TimerID</a> = timeSetEvent(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#r1">_TimerPeriod</a>, 0, &CSoundDriverDSound::TimerCallback, (DWORD)<font class="keyword">this</font>, TIME_CALLBACK_FUNCTION | TIME_PERIODIC);
00429
00430 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o5">_TimerID</a> == NULL)
00431 {
00432 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to create the timer"</font>);
00433 }
00434
00435
00436
00437
00438 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00439 }
00440
00441 <font class="comment">// ******************************************************************</font>
00442
<a name="l00443"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a8">00443</a> uint CSoundDriverDSound::countMaxSources()
00444 {
00445 <font class="comment">// Try the hardware 3d buffers first</font>
00446 uint n = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a9">countHw3DBuffers</a>();
00447 <font class="keywordflow">if</font> (n > 0)
00448 {
00449 <font class="keywordflow">return</font> n;
00450 }
00451
00452 <font class="comment">// If not, try the hardware 2d buffers first</font>
00453 n = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a10">countHw2DBuffers</a>();
00454 <font class="keywordflow">if</font> (n > 0)
00455 {
00456 <font class="keywordflow">return</font> n;
00457 }
00458
00459 <font class="comment">// Okay, we'll use 32 software buffers</font>
00460 <font class="keywordflow">return</font> 32;
00461 }
00462
00463 <font class="comment">// ******************************************************************</font>
00464
<a name="l00465"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a13">00465</a> <font class="keywordtype">void</font> CSoundDriverDSound::writeProfile(ostream& out)
00466 {
00467 <font class="comment">// Write the available sound devices</font>
00468 CDeviceDescription* list = CDeviceDescription::_List;
00469 <font class="keywordflow">while</font> (list) {
00470 out << list->_Description << <font class="stringliteral">"\n"</font>;
00471 list = list->_Next;
00472 }
00473
00474 out << <font class="stringliteral">"\n"</font>;
00475
00476 <font class="comment">// Write the buffers sizes</font>
00477 out << <font class="stringliteral">"buffer size: "</font> << CSourceDSound::_SecondaryBufferSize << <font class="stringliteral">"\n"</font>;
00478 out << <font class="stringliteral">"copy size: "</font> << CSourceDSound::_UpdateCopySize << <font class="stringliteral">"\n"</font>;
00479 out << <font class="stringliteral">"swap size: "</font> << CSourceDSound::_SwapCopySize << <font class="stringliteral">"\n"</font>;
00480 out << <font class="stringliteral">"\n"</font>;
00481
00482 <font class="comment">// Write the number of hardware buffers </font>
00483 DSCAPS caps;
00484 caps.dwSize = <font class="keyword">sizeof</font>(caps);
00485 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->GetCaps(&caps);
00486
00487 cout << <font class="stringliteral">"3d hw buffers: "</font> << caps.dwMaxHw3DAllBuffers << <font class="stringliteral">"\n"</font>;
00488 cout << <font class="stringliteral">"2d hw buffers: "</font> << caps.dwMaxHwMixingAllBuffers << <font class="stringliteral">"\n"</font>;
00489 out << <font class="stringliteral">"\n"</font>;
00490
00491 <font class="comment">// Write the number of hardware buffers </font>
00492 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00493 <font class="preprocessor"></font> out << <font class="stringliteral">"update time total --- "</font> << getAverageUpdateTime()<< <font class="stringliteral">"\n"</font>;
00494 out << <font class="stringliteral">"update time source --- "</font> << CSourceDSound::getAverageUpdateTime() << <font class="stringliteral">"\n"</font>;
00495 out << <font class="stringliteral">"update --- t: "</font> << CSourceDSound::getAverageCumulTime();
00496 out << <font class="stringliteral">" - p: "</font> << CSourceDSound::getAveragePosTime();
00497 out << <font class="stringliteral">" - l: "</font> << CSourceDSound::getAverageLockTime();
00498 out << <font class="stringliteral">" - c: "</font> << CSourceDSound::getAverageCopyTime();
00499 out << <font class="stringliteral">" - u: "</font> << CSourceDSound::getAverageUnlockTime() << <font class="stringliteral">"\n"</font>;
00500 out << <font class="stringliteral">"update percentage: --- "</font> << getUpdatePercentage() << <font class="stringliteral">"\n"</font>;
00501 out << <font class="stringliteral">"update num sources --- "</font> << getAverageUpdateSources() << <font class="stringliteral">"\n"</font>;
00502 out << <font class="stringliteral">"update byte size --- "</font> << CSourceDSound::getAverageUpdateSize() << <font class="stringliteral">"\n"</font>;
00503 out << <font class="stringliteral">"swap time --- "</font> << CSourceDSound::getTestAverage() << <font class="stringliteral">"\n"</font>;
00504 out << <font class="stringliteral">"src --- "</font> << <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a11">countPlayingSources</a>() << <font class="stringliteral">"\n"</font>;
00505 <font class="preprocessor">#endif</font>
00506 <font class="preprocessor"></font>}
00507
00508
<a name="l00509"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#f0">00509</a> <font class="keywordtype">void</font> CALLBACK CSoundDriverDSound::TimerCallback(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
00510 {
00511 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a0">CSoundDriverDSound</a>* driver = (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a0">CSoundDriverDSound</a>*) dwUser;
00512 driver->update();
00513 }
00514
00515 <font class="comment">// ******************************************************************</font>
00516
<a name="l00517"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a12">00517</a> <font class="keywordtype">void</font> CSoundDriverDSound::update()
00518 {
00519 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00520 <font class="preprocessor"></font> <a class="code" href="namespaceNLMISC.html#a184">TTicks</a> now = CTime::getPerformanceTime();
00521 <font class="preprocessor">#endif</font>
00522 <font class="preprocessor"></font>
00523 set<CSourceDSound*>::iterator iter;
00524
00525 iter = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.begin();
00526
00527 <font class="keywordflow">if</font> ((iter != <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.end()) && (*iter)->needsUpdate())
00528 {
00529 <font class="keywordflow">while</font> (iter != <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.end())
00530 {
00531 <font class="keywordflow">if</font> ((*iter)->update2()) {
00532 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00533 <font class="preprocessor"></font> _UpdateSources++;
00534 <font class="preprocessor">#endif</font>
00535 <font class="preprocessor"></font> }
00536 iter++;
00537 }
00538 }
00539
00540
00541 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00542 <font class="preprocessor"></font> _TotalUpdateTime += 1000.0 * CTime::ticksToSecond(CTime::getPerformanceTime() - now);
00543 _UpdateCount++;
00544 <font class="preprocessor">#endif</font>
00545 <font class="preprocessor"></font>}
00546
00547 <font class="comment">// ******************************************************************</font>
00548
<a name="l00549"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a9">00549</a> uint CSoundDriverDSound::countHw3DBuffers()
00550 {
00551 DSCAPS caps;
00552 caps.dwSize = <font class="keyword">sizeof</font>(caps);
00553
00554 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->GetCaps(&caps) != DS_OK)
00555 {
00556 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to query the sound device caps"</font>);
00557 }
00558
00559 <font class="keywordflow">return</font> caps.dwFreeHw3DStreamingBuffers;
00560 }
00561
00562 <font class="comment">// ******************************************************************</font>
00563
<a name="l00564"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a10">00564</a> uint CSoundDriverDSound::countHw2DBuffers()
00565 {
00566 DSCAPS caps;
00567 caps.dwSize = <font class="keyword">sizeof</font>(caps);
00568
00569 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->GetCaps(&caps) != DS_OK)
00570 {
00571 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to query the sound device caps"</font>);
00572 }
00573
00574 <font class="keywordflow">return</font> caps.dwFreeHwMixingStreamingBuffers;
00575 }
00576
00577 <font class="comment">// ******************************************************************</font>
00578
<a name="l00579"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a2">00579</a> IListener *CSoundDriverDSound::createListener()
00580 {
00581 LPDIRECTSOUND3DLISTENER dsoundListener;
00582
00583 <font class="keywordflow">if</font> (CListenerDSound::instance() != NULL)
00584 {
00585 <font class="keywordflow">return</font> CListenerDSound::instance();
00586 }
00587
00588 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> == 0)
00589 {
00590 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Corrupt driver"</font>);
00591 }
00592
00593 <font class="keywordflow">if</font> (FAILED(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>->QueryInterface(IID_IDirectSound3DListener, (LPVOID *) &dsoundListener)))
00594 {
00595 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"The 3D listener interface is not available."</font>);
00596 <font class="keywordflow">return</font> <font class="keyword">new</font> CListenerDSound(NULL);
00597 }
00598
00599 <font class="keywordflow">return</font> <font class="keyword">new</font> CListenerDSound(dsoundListener);
00600 }
00601
00602 <font class="comment">// ******************************************************************</font>
00603
<a name="l00604"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a4">00604</a> IBuffer *CSoundDriverDSound::createBuffer()
00605 {
00606 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> == 0)
00607 {
00608 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Corrupt driver"</font>);
00609 }
00610
00611
00612 <font class="comment">// FIXME: set buffer ID</font>
00613 <font class="keywordflow">return</font> <font class="keyword">new</font> CBufferDSound();
00614 }
00615
00616 <font class="comment">// ******************************************************************</font>
00617
<a name="l00618"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#c2">00618</a> <font class="keywordtype">void</font> CSoundDriverDSound::removeBuffer(IBuffer *buffer)
00619 {
00620 }
00621
00622 <font class="comment">// ******************************************************************</font>
00623
<a name="l00624"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a5">00624</a> <font class="keywordtype">bool</font> CSoundDriverDSound::loadWavFile(IBuffer *destbuffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *filename)
00625 {
00626 <font class="keywordflow">return</font> ((CBufferDSound*) destbuffer)->loadWavFile(filename);
00627 }
00628
00629 <font class="comment">// ******************************************************************</font>
00630
<a name="l00631"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a6">00631</a> ISource *CSoundDriverDSound::createSource()
00632 {
00633 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> == 0)
00634 {
00635 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Corrupt driver"</font>);
00636 }
00637
00638
00639 CSourceDSound* <a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a> = <font class="keyword">new</font> CSourceDSound(0);
00640 <a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>->init(<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>);
00641 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.insert(<a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>);
00642
00643 <font class="keywordflow">return</font> <a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>;
00644 }
00645
00646
00647 <font class="comment">// ******************************************************************</font>
00648
<a name="l00649"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#c3">00649</a> <font class="keywordtype">void</font> CSoundDriverDSound::removeSource(ISource *source)
00650 {
00651 <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.erase((CSourceDSound*) source);
00652 }
00653
00654 <font class="comment">// ******************************************************************</font>
00655
<a name="l00656"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a7">00656</a> <font class="keywordtype">void</font> CSoundDriverDSound::commit3DChanges()
00657 {
00658 CListenerDSound* listener = CListenerDSound::instance();
00659 listener->commit3DChanges();
00660
00661
00662 <font class="keyword">const</font> CVector &origin = listener->getPos();
00663
00664 set<CSourceDSound*>::iterator iter;
00665
00666 <font class="comment">// We handle the volume of the source according to the distance</font>
00667 <font class="comment">// ourselves. Call updateVolume() to, well..., update the volume</font>
00668 <font class="comment">// according to, euh ..., the new distance!</font>
00669 <font class="keywordflow">for</font> (iter = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.begin(); iter != <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.end(); iter++)
00670 {
00671 <font class="keywordflow">if</font> ((*iter)->isPlaying())
00672 {
00673 (*iter)->updateVolume(origin);
00674 }
00675 }
00676 }
00677
00678
00679 <font class="comment">// ******************************************************************</font>
00680
<a name="l00681"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a11">00681</a> uint CSoundDriverDSound::countPlayingSources()
00682 {
00683 uint n = 0;
00684 set<CSourceDSound*>::iterator iter;
00685
00686 <font class="keywordflow">for</font> (iter = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.begin(); iter != <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o3">_Sources</a>.end(); iter++)
00687 {
00688 <font class="keywordflow">if</font> ((*iter)->isPlaying())
00689 {
00690 n++;
00691 }
00692 }
00693
00694 <font class="keywordflow">return</font> n;
00695 }
00696
00697
00698 <font class="comment">// ******************************************************************</font>
00699
<a name="l00700"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a14">00700</a> <font class="keywordtype">void</font> CSoundDriverDSound::setGain( <font class="keywordtype">float</font> gain )
00701 {
00702 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> != 0)
00703 {
00704 <font class="keywordflow">if</font> (gain < 0.00001f)
00705 {
00706 gain = 0.00001f;
00707 }
00708
00709 <font class="comment">/* convert from linear amplitude to hundredths of decibels */</font>
00710 LONG volume = (LONG)(100.0 * 20.0 * log10(gain));
00711
00712 <font class="keywordflow">if</font> (volume < DSBVOLUME_MIN)
00713 {
00714 volume = DSBVOLUME_MIN;
00715 }
00716 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (volume > DSBVOLUME_MAX)
00717 {
00718 volume = DSBVOLUME_MAX;
00719 }
00720
00721 HRESULT hr = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>->SetVolume(volume);
00722
00723 <font class="keywordflow">if</font> (hr != DS_OK)
00724 {
00725 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Failed to set the volume"</font>);
00726 }
00727 }
00728 }
00729
00730 <font class="comment">// ******************************************************************</font>
00731
<a name="l00732"></a><a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#a15">00732</a> <font class="keywordtype">float</font> CSoundDriverDSound::getGain()
00733 {
00734 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a> != 0)
00735 {
00736 <font class="comment">/* convert from hundredths of decibels to linear amplitude */</font>
00737 LONG volume;
00738 HRESULT hr = <a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o1">_PrimaryBuffer</a>->GetVolume(&volume);
00739
00740 <font class="keywordflow">if</font> (hr != DS_OK)
00741 {
00742 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Failed to get the volume"</font>);
00743 <font class="keywordflow">return</font> 1.0;
00744 }
00745
00746 <font class="keywordflow">return</font> (float) pow(10, (<font class="keywordtype">double</font>) volume / 20.0 / 100.0);
00747 }
00748
00749 <font class="keywordflow">return</font> 1.0;
00750 }
00751
00752
00753
00754 <font class="preprocessor">#if NLSOUND_PROFILE</font>
00755 <font class="preprocessor"></font>
00756 <font class="comment">// ******************************************************************</font>
00757
00758 uint CSoundDriverDSound::countTimerIntervals()
00759 {
00760 <font class="keywordflow">return</font> 1024;
00761 }
00762
00763 <font class="comment">// ******************************************************************</font>
00764
00765 uint CSoundDriverDSound::getTimerIntervals(uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>)
00766 {
00767 <font class="keywordflow">return</font> _TimerInterval[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>];
00768 }
00769
00770 <font class="comment">// ******************************************************************</font>
00771
00772 <font class="keywordtype">void</font> CSoundDriverDSound::addTimerInterval(uint32 dt)
00773 {
00774 <font class="keywordflow">if</font> (_TimerIntervalCount >= 1024)
00775 {
00776 _TimerIntervalCount = 0;
00777 }
00778
00779 _TimerInterval[_TimerIntervalCount++] = dt;
00780 }
00781
00782 <font class="comment">// ******************************************************************</font>
00783
00784 <font class="keywordtype">double</font> CSoundDriverDSound::getCPULoad()
00785 {
00786 <font class="keywordflow">return</font> (_TotalTime > 0.0)? 100.0 * _TotalUpdateTime / _TotalTime : 0.0;
00787 }
00788
00789 <font class="comment">// ******************************************************************</font>
00790
00791 <font class="keywordtype">void</font> CSoundDriverDSound::printDriverInfo(FILE* fp)
00792 {
00793 CDeviceDescription* list = CDeviceDescription::_List;
00794
00795 <font class="keywordflow">while</font> (list) {
00796 fprintf(fp, <font class="stringliteral">"%s\n"</font>, list->_Description);
00797 list = list->_Next;
00798 }
00799
00800 fprintf(fp, <font class="stringliteral">"\n"</font>);
00801
00802 fprintf(fp, <font class="stringliteral">"buffer size: %d\n"</font>
00803 <font class="stringliteral">"copy size: %d\n"</font>
00804 <font class="stringliteral">"swap size: %d\n"</font>,
00805 CSourceDSound::_SecondaryBufferSize,
00806 CSourceDSound::_UpdateCopySize,
00807 CSourceDSound::_SwapCopySize);
00808
00809 fprintf(fp, <font class="stringliteral">"\n"</font>);
00810
00811 DSCAPS caps;
00812 caps.dwSize = <font class="keyword">sizeof</font>(caps);
00813
00814 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CSoundDriverDSound.html#o0">_DirectSound</a>->GetCaps(&caps) != DS_OK)
00815 {
00816 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to query the sound device caps"</font>);
00817 }
00818
00819
00820 fprintf(fp, <font class="stringliteral">"3d hw buffers: %d\n"</font> <font class="stringliteral">"2d hw buffers: %d\n\n"</font>, caps.dwMaxHw3DAllBuffers, caps.dwMaxHwMixingAllBuffers);
00821 }
00822
00823 <font class="preprocessor">#endif</font>
00824 <font class="preprocessor"></font>
00825
00826 } <font class="comment">// NLSOUND</font>
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