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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>buffer_dsound.cpp</h1><a href="buffer__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="buffer__dsound_8h.html">buffer_dsound.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="path_8h.html">nel/misc/path.h</a>"</font> +00030 +00031 +00032 <font class="preprocessor">#include <windows.h></font> +00033 <font class="preprocessor">#include <mmsystem.h></font> +00034 +00035 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC; +00036 <font class="keyword">using</font> <font class="keyword">namespace </font>std; +00037 +00038 <font class="keyword">namespace </font>NLSOUND { +00039 +00040 +<a name="l00041"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a0">00041</a> CBufferDSound::CBufferDSound() +00042 { +00043 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> = NULL; +00044 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a> = 0; +00045 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="namespaceNLSOUND.html#a83a22">Mono16</a>; +00046 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o4">_Freq</a> = 0; +00047 } +00048 +<a name="l00049"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a1">00049</a> CBufferDSound::~CBufferDSound() +00050 { +00051 <a class="code" href="debug_8h.html#a0">nldebug</a>(<font class="stringliteral">"Destroying DirectSound buffer %s (%p)"</font>, <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o0">_Name</a>.c_str(), <font class="keyword">this</font>); +00052 +00053 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> != NULL) +00054 { +00055 <font class="keyword">delete</font>[] <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a>; +00056 } +00057 } +00058 +<a name="l00059"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a2">00059</a> <font class="keywordtype">void</font> CBufferDSound::presetName(<font class="keyword">const</font> std::string &bufferName) +00060 { +00061 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o0">_Name</a> = bufferName; +00062 } +00063 +00064 +<a name="l00065"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a3">00065</a> <font class="keywordtype">void</font> CBufferDSound::setFormat( <a class="code" href="namespaceNLSOUND.html#a83">TSampleFormat</a> <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>, uint freq ) +00066 { +00067 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>; +00068 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o4">_Freq</a> = freq; +00069 } +00070 +00071 +<a name="l00072"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a4">00072</a> <font class="keywordtype">bool</font> CBufferDSound::fillBuffer( <font class="keywordtype">void</font> *<a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>, uint32 bufsize ) +00073 { +00074 <font class="keywordflow">return</font> <font class="keyword">false</font>; +00075 } +00076 +00077 +<a name="l00078"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a6">00078</a> <font class="keywordtype">float</font> CBufferDSound::getDuration()<font class="keyword"> const</font> +00079 <font class="keyword"></font>{ +00080 <font class="keywordtype">float</font> frames = (float) <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a>; +00081 +00082 <font class="keywordflow">switch</font> (_Format) { +00083 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a21">Mono8</a>: +00084 <font class="keywordflow">break</font>; +00085 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a22">Mono16</a>: +00086 frames /= 2.0f; +00087 <font class="keywordflow">break</font>; +00088 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a23">Stereo8</a>: +00089 frames /= 2.0f; +00090 <font class="keywordflow">break</font>; +00091 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a24">Stereo16</a>: +00092 frames /= 4.0f; +00093 <font class="keywordflow">break</font>; +00094 } +00095 +00096 <font class="keywordflow">return</font> 1000.0f * frames / (float) <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o4">_Freq</a>; +00097 } +00098 +00099 +<a name="l00100"></a><a class="code" href="classNLSOUND_1_1CBufferDSound.html#a10">00100</a> <font class="keywordtype">bool</font> CBufferDSound::loadWavFile(<font class="keyword">const</font> <font class="keywordtype">char</font>* <a class="code" href="cf__lexical_8cpp.html#a95">file</a>) +00101 { +00102 sint error; +00103 sint32 <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a>; +00104 HMMIO hmmio; +00105 WAVEFORMATEX <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>; +00106 MMCKINFO riff_chunk; +00107 MMCKINFO data_chunk; +00108 MMCKINFO chunk; +00109 +00110 +00111 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> != NULL) +00112 { +00113 free(<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a>); +00114 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> = NULL; +00115 } +00116 +00117 +00118 <font class="comment">// Open the file </font> +00119 hmmio = mmioOpen((<font class="keywordtype">char</font>*) <a class="code" href="cf__lexical_8cpp.html#a95">file</a>, NULL, MMIO_READ | MMIO_DENYWRITE); +00120 +00121 <font class="keywordflow">if</font> (hmmio == NULL) +00122 { +00123 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to open the file"</font>); +00124 } +00125 +00126 +00127 <font class="comment">// Check it's a WAVE file </font> +00128 riff_chunk.ckid = FOURCC_RIFF; +00129 +00130 error = (sint) mmioDescend(hmmio, &riff_chunk, NULL, 0); +00131 +00132 <font class="keywordflow">if</font> ((error != 0) || (riff_chunk.ckid != FOURCC_RIFF) || (riff_chunk.fccType != mmioFOURCC(<font class="charliteral">'W'</font>, <font class="charliteral">'A'</font>, <font class="charliteral">'V'</font>, <font class="charliteral">'E'</font>))) +00133 { +00134 mmioClose(hmmio, 0); +00135 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Not a WAVE file"</font>); +00136 } +00137 +00138 +00139 <font class="comment">// Search the format chunk </font> +00140 chunk.ckid = mmioFOURCC(<font class="charliteral">'f'</font>, <font class="charliteral">'m'</font>, <font class="charliteral">'t'</font>, <font class="charliteral">' '</font>); +00141 +00142 error = (sint) mmioDescend(hmmio, &chunk, &riff_chunk, MMIO_FINDCHUNK); +00143 +00144 <font class="keywordflow">if</font> (error != 0) +00145 { +00146 mmioClose(hmmio, 0); +00147 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Couldn't find the format chunk"</font>); +00148 } +00149 +00150 <font class="keywordflow">if</font> (chunk.cksize < (long) <font class="keyword">sizeof</font>(PCMWAVEFORMAT)) +00151 { +00152 mmioClose(hmmio, 0); +00153 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Invalid format chunk size"</font>); +00154 } +00155 +00156 +00157 <font class="comment">// read in the format data</font> +00158 +00159 <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a> = mmioRead(hmmio, (HPSTR) &<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>, (<font class="keywordtype">long</font>) <font class="keyword">sizeof</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>)); +00160 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a> != (long) <font class="keyword">sizeof</font>(format)) +00161 { +00162 mmioClose(hmmio, 0); +00163 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Read failed"</font>); +00164 } +00165 +00166 <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.cbSize = 0; +00167 +00168 <font class="comment">// Get out of the format chunk</font> +00169 +00170 <font class="keywordflow">if</font> (mmioAscend(hmmio, &chunk, 0) != 0) +00171 { +00172 mmioClose(hmmio, 0); +00173 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Read failed"</font>); +00174 } +00175 +00176 +00177 <font class="comment">// copy the format data </font> +00178 +00179 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wFormatTag != WAVE_FORMAT_PCM) +00180 { +00181 mmioClose(hmmio, 0); +00182 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported sample format"</font>); +00183 } +00184 +00185 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o4">_Freq</a> = <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nSamplesPerSec; +00186 +00187 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nChannels == 1) +00188 { +00189 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample == 8) +00190 { +00191 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="namespaceNLSOUND.html#a83a21">Mono8</a>; +00192 } +00193 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample == 16) +00194 { +00195 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="namespaceNLSOUND.html#a83a22">Mono16</a>; +00196 } +00197 <font class="keywordflow">else</font> +00198 { +00199 mmioClose(hmmio, 0); +00200 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported sample size"</font>); +00201 } +00202 } +00203 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.nChannels == 2) +00204 { +00205 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample == 8) +00206 { +00207 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="namespaceNLSOUND.html#a83a23">Stereo8</a>; +00208 } +00209 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>.wBitsPerSample == 16) +00210 { +00211 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o3">_Format</a> = <a class="code" href="namespaceNLSOUND.html#a83a24">Stereo16</a>; +00212 } +00213 <font class="keywordflow">else</font> +00214 { +00215 mmioClose(hmmio, 0); +00216 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported sample size"</font>); +00217 } +00218 } +00219 <font class="keywordflow">else</font> <font class="comment">// Shouldn't normally happen</font> +00220 { +00221 mmioClose(hmmio, 0); +00222 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Unsupported number of channels"</font>); +00223 } +00224 +00225 +00226 <font class="comment">// Set the file position to the beginning of the data chunk */</font> +00227 +00228 sint32 pos = mmioSeek(hmmio, riff_chunk.dwDataOffset + <font class="keyword">sizeof</font>(FOURCC), SEEK_SET); +00229 +00230 <font class="keywordflow">if</font> (pos < 0) +00231 { +00232 mmioClose(hmmio, 0); +00233 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Read to set the read position"</font>); +00234 } +00235 +00236 data_chunk.ckid = mmioFOURCC(<font class="charliteral">'d'</font>, <font class="charliteral">'a'</font>, <font class="charliteral">'t'</font>, <font class="charliteral">'a'</font>); +00237 +00238 <font class="keywordflow">if</font> (mmioDescend(hmmio, &data_chunk, &riff_chunk, MMIO_FINDCHUNK) != 0) +00239 { +00240 mmioClose(hmmio, 0); +00241 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Read to set the read position"</font>); +00242 } +00243 +00244 +00245 <font class="comment">// Allocate the sample buffer</font> +00246 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a> = data_chunk.cksize; +00247 +00248 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> = <font class="keyword">new</font> uint8[<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a>]; +00249 +00250 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a> == NULL) +00251 { +00252 mmioClose(hmmio, 0); +00253 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Out of memory"</font>); +00254 } +00255 +00256 +00257 <font class="comment">// Read the sample data</font> +00258 +00259 <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a> = mmioRead(hmmio, (HPSTR) <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a>, <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a>); +00260 +00261 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a> < 0) +00262 { +00263 <font class="keywordflow">throw</font> ESoundDriver(<font class="stringliteral">"Failed to read the samples"</font>); +00264 } +00265 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ((uint32) <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a> < <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a>) +00266 { +00267 <font class="comment">// FIXME: print warning or throw exception ???</font> +00268 <font class="keywordtype">char</font>* p = (<font class="keywordtype">char</font>*) <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o1">_Data</a>; +00269 ZeroMemory(p + <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a>, <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o2">_Size</a> - <a class="code" href="driver__opengl__extension__def_8h.html#a410">num</a>); +00270 } +00271 +00272 +00273 mmioClose(hmmio, 0); +00274 +00275 +00276 std::string name = CFile::getFilenameWithoutExtension(<a class="code" href="cf__lexical_8cpp.html#a95">file</a>); +00277 <font class="comment">// if name is preseted, the name must match.</font> +00278 <font class="keywordflow">if</font> (!<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o0">_Name</a>.empty()) +00279 { +00280 <a class="code" href="debug_8h.html#a8">nlassertex</a>(<a class="code" href="classNLSOUND_1_1CBufferDSound.html#o0">_Name</a> == name, (<font class="stringliteral">"The preseted name and buffer name doen't match !"</font>)); +00281 } +00282 <a class="code" href="classNLSOUND_1_1CBufferDSound.html#o0">_Name</a> = name; +00283 +00284 <font class="keywordflow">return</font> <font class="keyword">true</font>; +00285 +00286 } +00287 +00288 +00289 } <font class="comment">// NLSOUND</font> +00290 +00291 +00292 +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |