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<h1>NLSOUND::CBufferDSound Class Reference</h1><code>#include <<a class="el" href="a05521.html">buffer_dsound.h</a>></code>
<p>
<p>Inheritance diagram for NLSOUND::CBufferDSound:
<p><center><img src="a02299.png" usemap="#NLSOUND::CBufferDSound_map" border="0" alt=""></center>
<map name="NLSOUND::CBufferDSound_map">
<area href="a02298.html" alt="NLSOUND::IBuffer" shape="rect" coords="0,0,167,24">
</map>
<hr><a name="_details"></a><h2>Detailed Description</h2>
Buffer for the DSound implementation of the audio driver.<p>
A buffer represents a sound file loaded in RAM.<p>
<dl compact><dt><b>Author:</b></dt><dd>Peter Hanappe, Olivier Cado <p>
Nevrax France </dd></dl>
<dl compact><dt><b>Date:</b></dt><dd>2002 </dd></dl>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00045">45</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda0">CBufferDSound</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#NLSOUND_1_1CBufferDSounda0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda1">fillBuffer</a> (void *<a class="el" href="a04223.html#a652">src</a>, <a class="el" href="a04558.html#a11">uint32</a> bufsize)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the buffer size and fill the buffer. Return true if ok. Call <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda16">setFormat()</a> first. <a href="#NLSOUND_1_1CBufferDSounda1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBuffera1">fillMore</a> (void *<a class="el" href="a04223.html#a652">src</a>, <a class="el" href="a04558.html#a11">uint32</a> srcsize)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual <a class="el" href="a04558.html#a11">uint32</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda3">getBufferADPCMEncoded</a> (std::vector< <a class="el" href="a04558.html#a7">uint8</a> > &result)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual <a class="el" href="a04558.html#a11">uint32</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda4">getBufferMono16</a> (std::vector< <a class="el" href="a04558.html#a8">sint16</a> > &result)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual <a class="el" href="a04558.html#a7">uint8</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda5">getData</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a pointer to the sample data. <a href="#NLSOUND_1_1CBufferDSounda5"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual float </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda6">getDuration</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the duration (in ms) of the sample in the buffer. <a href="#NLSOUND_1_1CBufferDSounda6"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda7">getFormat</a> (<a class="el" href="a05381.html#a80">TSampleFormat</a> &<a class="el" href="a04223.html#a641">format</a>, <a class="el" href="a04558.html#a15">uint</a> &freq) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the format and frequency. <a href="#NLSOUND_1_1CBufferDSounda7"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual const <a class="el" href="a05378.html#a236">NLMISC::TStringId</a> & </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda8">getName</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the name of the buffer. <a href="#NLSOUND_1_1CBufferDSounda8"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual <a class="el" href="a04558.html#a11">uint32</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda9">getSize</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the size of the buffer, in bytes. <a href="#NLSOUND_1_1CBufferDSounda9"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda10">isBufferLoaded</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if the buffer is loaded. Used for async load/unload. <a href="#NLSOUND_1_1CBufferDSounda10"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda11">isFillMoreSupported</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda12">isStereo</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if the buffer is stereo, false if mono. <a href="#NLSOUND_1_1CBufferDSounda12"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda13">presetName</a> (const <a class="el" href="a05378.html#a236">NLMISC::TStringId</a> &bufferName)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda14">readRawBuffer</a> (const std::string &name, <a class="el" href="a04558.html#a7">uint8</a> *rawData, <a class="el" href="a04558.html#a15">uint</a> dataSize, <a class="el" href="a05381.html#a80">TSampleFormat</a> <a class="el" href="a04223.html#a641">format</a>, <a class="el" href="a04558.html#a11">uint32</a> frequency)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda15">readWavBuffer</a> (const std::string &name, <a class="el" href="a04558.html#a7">uint8</a> *wavData, <a class="el" href="a04558.html#a15">uint</a> dataSize)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Load a sound file in the buffer. Throws an exception is an error occurs. <a href="#NLSOUND_1_1CBufferDSounda15"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda16">setFormat</a> (<a class="el" href="a05381.html#a80">TSampleFormat</a> <a class="el" href="a04223.html#a641">format</a>, <a class="el" href="a04558.html#a15">uint</a> freq)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the sample format. Example: freq=44100. <a href="#NLSOUND_1_1CBufferDSounda16"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBuffera11">setSize</a> (<a class="el" href="a04558.html#a11">uint32</a> <a class="el" href="a04223.html#a587">size</a>)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Force the buffer size without filling data (if <a class="el" href="a02298.html#NLSOUND_1_1IBuffera7">isFillMoreSupported()</a> only). <a href="#NLSOUND_1_1IBuffera11"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda18">~CBufferDSound</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <a href="#NLSOUND_1_1CBufferDSounda18"></a><br><br></td></tr>
<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Source properties</div></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_2">decodeADPCM</a> (<a class="el" href="a04558.html#a7">uint8</a> *indata, <a class="el" href="a04558.html#a8">sint16</a> *outdata, <a class="el" href="a04558.html#a15">uint</a> nbSample, TADPCMState &state)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_3">encodeADPCM</a> (<a class="el" href="a04558.html#a8">sint16</a> *indata, <a class="el" href="a04558.html#a7">uint8</a> *outdata, <a class="el" href="a04558.html#a15">uint</a> nbSample, TADPCMState &state)</td></tr>
<tr><td colspan="2"><div class="groupHeader">Source properties</div></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_2">decodeADPCM</a> (<a class="el" href="a04558.html#a7">uint8</a> *indata, <a class="el" href="a04558.html#a8">sint16</a> *outdata, <a class="el" href="a04558.html#a15">uint</a> nbSample, TADPCMState &state)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_3">encodeADPCM</a> (<a class="el" href="a04558.html#a8">sint16</a> *indata, <a class="el" href="a04558.html#a7">uint8</a> *outdata, <a class="el" href="a04558.html#a15">uint</a> nbSample, TADPCMState &state)</td></tr>
<tr><td colspan=2><br><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a7">uint8</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a05381.html#a80">TSampleFormat</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a15">uint</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a05378.html#a236">NLMISC::TStringId</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a11">uint32</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a></td></tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda0" doxytag="NLSOUND::CBufferDSound::CBufferDSound" ></a><p>
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<td class="md" nowrap valign="top"> NLSOUND::CBufferDSound::CBufferDSound </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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</td>
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<td>
</td>
<td>
<p>
Constructor.
<p>
<p>
Definition at line <a class="el" href="a05520.html#l00131">131</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05520.html#l00044">NLSOUND::EmptyString</a>, and <a class="el" href="a05381.html#a80a19">NLSOUND::Mono16</a>.
<p>
<div class="fragment"><pre>00132 {
00133 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> = CSoundDriverDSound::instance()->getStringMapper()->map(EmptyString);
00134 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> = NULL;
00135 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a> = 0;
00136 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a05381.html#a80a19">Mono16</a>;
00137 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a> = 0;
00138 }
</pre></div> </td>
</tr>
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<a class="anchor" name="NLSOUND_1_1CBufferDSounda18" doxytag="NLSOUND::CBufferDSound::~CBufferDSound" ></a><p>
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<td class="md" nowrap valign="top"> NLSOUND::CBufferDSound::~<a class="el" href="a02299.html">CBufferDSound</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
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</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Destructor.
<p>
<p>
Definition at line <a class="el" href="a05520.html#l00140">140</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
<div class="fragment"><pre>00141 {
00142 <span class="comment">// nldebug("Destroying DirectSound buffer %s (%p)", CSoundDriverDSound::instance()->getStringMapper()->unmap(_Name).c_str(), this);</span>
00143
00144 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> != NULL)
00145 {
00146 <span class="keyword">delete</span>[] <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>;
00147 }
00148 }
</pre></div> </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="NLSOUND_1_1IBufferz1304_2" doxytag="NLSOUND::CBufferDSound::decodeADPCM" ></a><p>
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<td class="md" nowrap valign="top"> void NLSOUND::IBuffer::decodeADPCM </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a04558.html#a7">uint8</a> * </td>
<td class="mdname" nowrap> <em>indata</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a8">sint16</a> * </td>
<td class="mdname" nowrap> <em>outdata</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname" nowrap> <em>nbSample</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a03845.html">TADPCMState</a> & </td>
<td class="mdname" nowrap> <em>state</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [static, inherited]</code></td>
</tr>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Unoptimized utility function designed to build ADPCM encoded sample bank file. Return the number of sample in the buffer.
<p>
Definition at line <a class="el" href="a05516.html#l00164">164</a> of file <a class="el" href="a05516.html">buffer.cpp</a>.
<p>
References <a class="el" href="a05516.html#l00031">NLSOUND::IBuffer::_IndexTable</a>, <a class="el" href="a05516.html#l00037">NLSOUND::IBuffer::_StepsizeTable</a>, <a class="el" href="a05646.html#l00225">index</a>, <a class="el" href="a05517.html#l00092">NLSOUND::IBuffer::TADPCMState::PreviousSample</a>, <a class="el" href="a05981.html#l00097">sint16</a>, <a class="el" href="a05517.html#l00094">NLSOUND::IBuffer::TADPCMState::StepIndex</a>, <a class="el" href="a05981.html#l00105">uint</a>, and <a class="el" href="a05981.html#l00096">uint8</a>.
<p>
<div class="fragment"><pre>00165 {
00166 <a class="code" href="a04558.html#a7">uint8</a> *inp; <span class="comment">/* Input buffer pointer */</span>
00167 <a class="code" href="a04558.html#a8">sint16</a> *outp; <span class="comment">/* output buffer pointer */</span>
00168 <span class="keywordtype">int</span> sign; <span class="comment">/* Current adpcm sign bit */</span>
00169 <span class="keywordtype">int</span> delta; <span class="comment">/* Current adpcm output value */</span>
00170 <span class="keywordtype">int</span> step; <span class="comment">/* Stepsize */</span>
00171 <span class="keywordtype">int</span> valpred; <span class="comment">/* Predicted value */</span>
00172 <span class="keywordtype">int</span> vpdiff; <span class="comment">/* Current change to valpred */</span>
00173 <span class="keywordtype">int</span> <a class="code" href="a04223.html#a566">index</a>; <span class="comment">/* Current step change index */</span>
00174 <span class="keywordtype">int</span> inputbuffer; <span class="comment">/* place to keep next 4-bit value */</span>
00175 <span class="keywordtype">int</span> bufferstep; <span class="comment">/* toggle between inputbuffer/input */</span>
00176
00177 outp = outdata;
00178 inp = indata;
00179
00180 valpred = state.PreviousSample;
00181 <a class="code" href="a04223.html#a566">index</a> = state.StepIndex;
00182 step = _StepsizeTable[<a class="code" href="a04223.html#a566">index</a>];
00183
00184 bufferstep = 0;
00185
00186 <span class="keywordflow">for</span> ( ; nbSample > 0 ; nbSample-- )
00187 {
00188
00189 <span class="comment">/* Step 1 - get the delta value */</span>
00190 <span class="keywordflow">if</span> ( bufferstep )
00191 {
00192 delta = inputbuffer & 0xf;
00193 }
00194 <span class="keywordflow">else</span>
00195 {
00196 inputbuffer = *inp++;
00197 delta = (inputbuffer >> 4) & 0xf;
00198 }
00199 bufferstep = !bufferstep;
00200
00201 <span class="comment">/* Step 2 - Find new index value (for later) */</span>
00202 <a class="code" href="a04223.html#a566">index</a> += _IndexTable[delta];
00203 <span class="keywordflow">if</span> ( <a class="code" href="a04223.html#a566">index</a> < 0 )
00204 <a class="code" href="a04223.html#a566">index</a> = 0;
00205 <span class="keywordflow">if</span> ( <a class="code" href="a04223.html#a566">index</a> > 88 )
00206 <a class="code" href="a04223.html#a566">index</a> = 88;
00207
00208 <span class="comment">/* Step 3 - Separate sign and magnitude */</span>
00209 sign = delta & 8;
00210 delta = delta & 7;
00211
00212 <span class="comment">/* Step 4 - Compute difference and new predicted value */</span>
00213 <span class="comment">/*</span>
00214 <span class="comment"> ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment</span>
00215 <span class="comment"> ** in adpcm_coder.</span>
00216 <span class="comment"> */</span>
00217 vpdiff = step >> 3;
00218 <span class="keywordflow">if</span> ( delta & 4 )
00219 vpdiff += step;
00220 <span class="keywordflow">if</span> ( delta & 2 )
00221 vpdiff += step>>1;
00222 <span class="keywordflow">if</span> ( delta & 1 )
00223 vpdiff += step>>2;
00224
00225 <span class="keywordflow">if</span> ( sign )
00226 valpred -= vpdiff;
00227 <span class="keywordflow">else</span>
00228 valpred += vpdiff;
00229
00230 <span class="comment">/* Step 5 - clamp output value */</span>
00231 <span class="keywordflow">if</span> ( valpred > 32767 )
00232 valpred = 32767;
00233 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( valpred < -32768 )
00234 valpred = -32768;
00235
00236 <span class="comment">/* Step 6 - Update step value */</span>
00237 step = _StepsizeTable[<a class="code" href="a04223.html#a566">index</a>];
00238
00239 <span class="comment">/* Step 7 - Output value */</span>
00240 *outp++ = valpred;
00241 }
00242
00243 state.PreviousSample = valpred;
00244 state.StepIndex = <a class="code" href="a04223.html#a566">index</a>;
00245 }
</pre></div> </td>
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</table>
<a class="anchor" name="NLSOUND_1_1IBufferz1304_3" doxytag="NLSOUND::CBufferDSound::encodeADPCM" ></a><p>
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<td class="md" nowrap valign="top"> void NLSOUND::IBuffer::encodeADPCM </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a04558.html#a8">sint16</a> * </td>
<td class="mdname" nowrap> <em>indata</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a7">uint8</a> * </td>
<td class="mdname" nowrap> <em>outdata</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname" nowrap> <em>nbSample</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a03845.html">TADPCMState</a> & </td>
<td class="mdname" nowrap> <em>state</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [static, inherited]</code></td>
</tr>
</table>
</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Unoptimized utility function designed to build ADPCM encoded sample bank file. Return the number of sample in the buffer.
<p>
Definition at line <a class="el" href="a05516.html#l00051">51</a> of file <a class="el" href="a05516.html">buffer.cpp</a>.
<p>
References <a class="el" href="a05516.html#l00031">NLSOUND::IBuffer::_IndexTable</a>, <a class="el" href="a05516.html#l00037">NLSOUND::IBuffer::_StepsizeTable</a>, <a class="el" href="a05646.html#l00225">index</a>, <a class="el" href="a05517.html#l00092">NLSOUND::IBuffer::TADPCMState::PreviousSample</a>, <a class="el" href="a05981.html#l00097">sint16</a>, <a class="el" href="a05517.html#l00094">NLSOUND::IBuffer::TADPCMState::StepIndex</a>, <a class="el" href="a05981.html#l00105">uint</a>, and <a class="el" href="a05981.html#l00096">uint8</a>.
<p>
Referenced by <a class="el" href="a05520.html#l00451">getBufferADPCMEncoded()</a>.
<p>
<div class="fragment"><pre>00052 {
00053 <a class="code" href="a04558.html#a8">sint16</a> *inp; <span class="comment">/* Input buffer pointer */</span>
00054 <a class="code" href="a04558.html#a7">uint8</a> *outp; <span class="comment">/* output buffer pointer */</span>
00055 <span class="keywordtype">int</span> val; <span class="comment">/* Current input sample value */</span>
00056 <span class="keywordtype">int</span> sign; <span class="comment">/* Current adpcm sign bit */</span>
00057 <span class="keywordtype">int</span> delta; <span class="comment">/* Current adpcm output value */</span>
00058 <span class="keywordtype">int</span> diff; <span class="comment">/* Difference between val and valprev */</span>
00059 <span class="keywordtype">int</span> step; <span class="comment">/* Stepsize */</span>
00060 <span class="keywordtype">int</span> valpred; <span class="comment">/* Predicted output value */</span>
00061 <span class="keywordtype">int</span> vpdiff; <span class="comment">/* Current change to valpred */</span>
00062 <span class="keywordtype">int</span> <a class="code" href="a04223.html#a566">index</a>; <span class="comment">/* Current step change index */</span>
00063 <span class="keywordtype">int</span> outputbuffer; <span class="comment">/* place to keep previous 4-bit value */</span>
00064 <span class="keywordtype">int</span> bufferstep; <span class="comment">/* toggle between outputbuffer/output */</span>
00065
00066 outp = outdata;
00067 inp = indata;
00068
00069 valpred = state.PreviousSample;
00070 <a class="code" href="a04223.html#a566">index</a> = state.StepIndex;
00071 step = _StepsizeTable[<a class="code" href="a04223.html#a566">index</a>];
00072
00073 bufferstep = 1;
00074
00075 <span class="keywordflow">for</span> ( ; nbSample > 0 ; nbSample-- )
00076 {
00077 val = *inp++;
00078
00079 <span class="comment">/* Step 1 - compute difference with previous value */</span>
00080 diff = val - valpred;
00081 sign = (diff < 0) ? 8 : 0;
00082 <span class="keywordflow">if</span> ( sign ) diff = (-diff);
00083
00084 <span class="comment">/* Step 2 - Divide and clamp */</span>
00085 <span class="comment">/* Note:</span>
00086 <span class="comment"> ** This code *approximately* computes:</span>
00087 <span class="comment"> ** delta = diff*4/step;</span>
00088 <span class="comment"> ** vpdiff = (delta+0.5)*step/4;</span>
00089 <span class="comment"> ** but in shift step bits are dropped. The net result of this is</span>
00090 <span class="comment"> ** that even if you have fast mul/div hardware you cannot put it to</span>
00091 <span class="comment"> ** good use since the fixup would be too expensive.</span>
00092 <span class="comment"> */</span>
00093 delta = 0;
00094 vpdiff = (step >> 3);
00095
00096 <span class="keywordflow">if</span> ( diff >= step )
00097 {
00098 delta = 4;
00099 diff -= step;
00100 vpdiff += step;
00101 }
00102 step >>= 1;
00103 <span class="keywordflow">if</span> ( diff >= step )
00104 {
00105 delta |= 2;
00106 diff -= step;
00107 vpdiff += step;
00108 }
00109 step >>= 1;
00110 <span class="keywordflow">if</span> ( diff >= step )
00111 {
00112 delta |= 1;
00113 vpdiff += step;
00114 }
00115
00116 <span class="comment">/* Step 3 - Update previous value */</span>
00117 <span class="keywordflow">if</span> ( sign )
00118 valpred -= vpdiff;
00119 <span class="keywordflow">else</span>
00120 valpred += vpdiff;
00121
00122 <span class="comment">/* Step 4 - Clamp previous value to 16 bits */</span>
00123 <span class="keywordflow">if</span> ( valpred > 32767 )
00124 {
00125 printf(<span class="stringliteral">"over+ %d\n"</span>,valpred);
00126 valpred = 32767;
00127 }
00128 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( valpred < -32768 )
00129 {
00130 printf(<span class="stringliteral">"over- %d\n"</span>,valpred);
00131 valpred = -32768;
00132 }
00133
00134 <span class="comment">/* Step 5 - Assemble value, update index and step values */</span>
00135 delta |= sign;
00136
00137 <a class="code" href="a04223.html#a566">index</a> += _IndexTable[delta];
00138 <span class="keywordflow">if</span> ( <a class="code" href="a04223.html#a566">index</a> < 0 )
00139 <a class="code" href="a04223.html#a566">index</a> = 0;
00140 <span class="keywordflow">if</span> ( <a class="code" href="a04223.html#a566">index</a> > 88 )
00141 <a class="code" href="a04223.html#a566">index</a> = 88;
00142 step = _StepsizeTable[<a class="code" href="a04223.html#a566">index</a>];
00143
00144 <span class="comment">/* Step 6 - Output value */</span>
00145 <span class="keywordflow">if</span> ( bufferstep )
00146 {
00147 outputbuffer = (delta << 4) & 0xf0;
00148 }
00149 <span class="keywordflow">else</span>
00150 {
00151 *outp++ = (delta & 0x0f) | outputbuffer;
00152 }
00153 bufferstep = !bufferstep;
00154 }
00155
00156 <span class="comment">/* Output last step, if needed */</span>
00157 <span class="keywordflow">if</span> ( !bufferstep )
00158 *outp++ = outputbuffer;
00159
00160 state.PreviousSample = valpred;
00161 state.StepIndex = <a class="code" href="a04223.html#a566">index</a>;
00162 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda1" doxytag="NLSOUND::CBufferDSound::fillBuffer" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> bool NLSOUND::CBufferDSound::fillBuffer </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname" nowrap> <em>src</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a11">uint32</a> </td>
<td class="mdname" nowrap> <em>bufsize</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Set the buffer size and fill the buffer. Return true if ok. Call <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda16">setFormat()</a> first.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera0">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00163">163</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05646.html#l01124">src</a>, and <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
<div class="fragment"><pre>00164 {
00165 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00166 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1IBuffera1" doxytag="NLSOUND::CBufferDSound::fillMore" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual bool NLSOUND::IBuffer::fillMore </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname" nowrap> <em>src</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a11">uint32</a> </td>
<td class="mdname" nowrap> <em>srcsize</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [inline, virtual, inherited]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Fill the buffer partially (if <a class="el" href="a02298.html#NLSOUND_1_1IBuffera7">isFillMoreSupported()</a> only), beginning at the pos changed by a previous call to <a class="el" href="a02298.html#NLSOUND_1_1IBuffera1">fillMore()</a>. If the pos+srcsize exceeds the buffer size, the exceeding data is put at the beginning of the buffer. srcsize must be smaller than the buffer size.
<p>
Reimplemented in <a class="el" href="a02297.html#NLSOUND_1_1CBufferALa3">NLSOUND::CBufferAL</a>.
<p>
Definition at line <a class="el" href="a05517.html#l00079">79</a> of file <a class="el" href="a05517.html">buffer.h</a>.
<p>
References <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
Referenced by <a class="el" href="a05927.html#l00048">NLSOUND::ILoader::fillBufferPart()</a>.
<p>
<div class="fragment"><pre>00079 { <span class="keywordflow">throw</span> ESoundDriverNotSupp(); }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda3" doxytag="NLSOUND::CBufferDSound::getBufferADPCMEncoded" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a11">uint32</a> NLSOUND::CBufferDSound::getBufferADPCMEncoded </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">std::vector< <a class="el" href="a04558.html#a7">uint8</a> > & </td>
<td class="mdname1" valign="top" nowrap> <em>result</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Unoptimized utility function designed to build ADPCM encoded sample bank file. Return the number of sample in the buffer.
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_0">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00451">451</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05516.html#l00051">NLSOUND::IBuffer::encodeADPCM()</a>, <a class="el" href="a05381.html#a80a19">NLSOUND::Mono16</a>, <a class="el" href="a05981.html#l00097">sint16</a>, and <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
<div class="fragment"><pre>00452 {
00453 result.clear();
00454
00455 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> == 0)
00456 <span class="keywordflow">return</span> 0;
00457
00458 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> != <a class="code" href="a05381.html#a80a19">Mono16</a>)
00459 <span class="keywordflow">return</span> 0;
00460
00461 <a class="code" href="a04558.html#a11">uint32</a> nbSample = <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>/2;
00462 nbSample &= 0xfffffffe;
00463
00464 result.resize(nbSample / 2);
00465
00466 TADPCMState state;
00467 state.PreviousSample = 0;
00468 state.StepIndex = 0;
00469 <a class="code" href="a02298.html#NLSOUND_1_1IBufferz1304_3">encodeADPCM</a>((<a class="code" href="a04558.html#a8">sint16</a>*)_Data, &result[0], nbSample, state);
00470
00471 <span class="keywordflow">return</span> nbSample;
00472 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda4" doxytag="NLSOUND::CBufferDSound::getBufferMono16" ></a><p>
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a11">uint32</a> NLSOUND::CBufferDSound::getBufferMono16 </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">std::vector< <a class="el" href="a04558.html#a8">sint16</a> > & </td>
<td class="mdname1" valign="top" nowrap> <em>result</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Unoptimized utility function designed to build Mono 16 bits encoded sample bank file. Return the number of sample in the buffer.
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBufferz1304_1">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00474">474</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05381.html#a80a19">NLSOUND::Mono16</a>, <a class="el" href="a05981.html#l00097">sint16</a>, <a class="el" href="a05381.html#a80a21">NLSOUND::Stereo16</a>, <a class="el" href="a05981.html#l00105">uint</a>, and <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
<div class="fragment"><pre>00475 {
00476 result.clear();
00477
00478 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> == 0)
00479 <span class="keywordflow">return</span> 0;
00480
00481 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> == <a class="code" href="a05381.html#a80a19">Mono16</a>)
00482 {
00483 <a class="code" href="a04558.html#a15">uint</a> nbSample = <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>/2;
00484 nbSample &= 0xfffffffe;
00485
00486 result.reserve(nbSample);
00487 result.insert(result.begin(), (<a class="code" href="a04558.html#a8">sint16</a>*)<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>, ((<a class="code" href="a04558.html#a8">sint16</a>*)<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>)+nbSample);
00488
00489 <span class="keywordflow">return</span> nbSample;
00490 }
00491 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> == <a class="code" href="a05381.html#a80a21">Stereo16</a>)
00492 {
00493 <a class="code" href="a04558.html#a15">uint</a> nbSample = <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>/4;
00494 nbSample &= 0xfffffffe;
00495
00496 <span class="keyword">struct </span>TFrame
00497 {
00498 <a class="code" href="a04558.html#a8">sint16</a> Channel1;
00499 <a class="code" href="a04558.html#a8">sint16</a> Channel2;
00500 };
00501 result.reserve(nbSample);
00502 <a class="code" href="a06800.html">TFrame</a> *frame = (<a class="code" href="a06800.html">TFrame</a> *)<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>;
00503 <span class="keywordflow">for</span> (<a class="code" href="a04558.html#a15">uint</a> i=0; i<nbSample; ++i)
00504 {
00505 result[i] = (frame->Channel1>>1) +(frame->Channel2>>1);
00506 }
00507
00508 <span class="keywordflow">return</span> nbSample;
00509 }
00510 <span class="keywordflow">else</span>
00511 <span class="keywordflow">return</span> 0;
00512 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda5" doxytag="NLSOUND::CBufferDSound::getData" ></a><p>
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual <a class="el" href="a04558.html#a7">uint8</a>* NLSOUND::CBufferDSound::getData </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return a pointer to the sample data.
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00103">103</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
References <a class="el" href="a05981.html#l00096">uint8</a>.
<p>
<div class="fragment"><pre>00103 { <span class="keywordflow">return</span> <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>; }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda6" doxytag="NLSOUND::CBufferDSound::getDuration" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> float NLSOUND::CBufferDSound::getDuration </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return the duration (in ms) of the sample in the buffer.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera2">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00169">169</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05381.html#a80a19">NLSOUND::Mono16</a>, <a class="el" href="a05381.html#a80a18">NLSOUND::Mono16ADPCM</a>, <a class="el" href="a05381.html#a80a17">NLSOUND::Mono8</a>, <a class="el" href="a05381.html#a80a21">NLSOUND::Stereo16</a>, and <a class="el" href="a05381.html#a80a20">NLSOUND::Stereo8</a>.
<p>
<div class="fragment"><pre>00170 {
00171 <span class="keywordtype">float</span> frames = (<span class="keywordtype">float</span>) <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>;
00172
00173 <span class="keywordflow">switch</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a>)
00174 {
00175 <span class="keywordflow">case</span> <a class="code" href="a05381.html#a80a17">Mono8</a>:
00176 <span class="keywordflow">break</span>;
00177 <span class="keywordflow">case</span> <a class="code" href="a05381.html#a80a18">Mono16ADPCM</a>:
00178 frames *= 2.0f;
00179 <span class="keywordflow">break</span>;
00180 <span class="keywordflow">case</span> <a class="code" href="a05381.html#a80a19">Mono16</a>:
00181 frames /= 2.0f;
00182 <span class="keywordflow">break</span>;
00183 <span class="keywordflow">case</span> <a class="code" href="a05381.html#a80a20">Stereo8</a>:
00184 frames /= 2.0f;
00185 <span class="keywordflow">break</span>;
00186 <span class="keywordflow">case</span> <a class="code" href="a05381.html#a80a21">Stereo16</a>:
00187 frames /= 4.0f;
00188 <span class="keywordflow">break</span>;
00189 }
00190
00191 <span class="keywordflow">return</span> 1000.0f * frames / (<span class="keywordtype">float</span>) <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a>;
00192 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda7" doxytag="NLSOUND::CBufferDSound::getFormat" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual void NLSOUND::CBufferDSound::getFormat </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a05381.html#a80">TSampleFormat</a> & </td>
<td class="mdname" nowrap> <em>format</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> & </td>
<td class="mdname" nowrap> <em>freq</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return the format and frequency.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera3">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00072">72</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05646.html#l01016">format</a>, and <a class="el" href="a05981.html#l00105">uint</a>.
<p>
<div class="fragment"><pre>00072 { <a class="code" href="a04223.html#a641">format</a> = <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a>; freq = <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a>; }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda8" doxytag="NLSOUND::CBufferDSound::getName" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual const <a class="el" href="a05378.html#a236">NLMISC::TStringId</a>& NLSOUND::CBufferDSound::getName </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return the name of the buffer.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera4">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00106">106</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
<div class="fragment"><pre>00106 { <span class="keywordflow">return</span> <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a>; }
</pre></div> </td>
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<a class="anchor" name="NLSOUND_1_1CBufferDSounda9" doxytag="NLSOUND::CBufferDSound::getSize" ></a><p>
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<td class="md" nowrap valign="top"> virtual <a class="el" href="a04558.html#a11">uint32</a> NLSOUND::CBufferDSound::getSize </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return the size of the buffer, in bytes.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera5">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00063">63</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
References <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
<div class="fragment"><pre>00063 { <span class="keywordflow">return</span> <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>; }
</pre></div> </td>
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<a class="anchor" name="NLSOUND_1_1CBufferDSounda10" doxytag="NLSOUND::CBufferDSound::isBufferLoaded" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> virtual bool NLSOUND::CBufferDSound::isBufferLoaded </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline, virtual]</code></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return true if the buffer is loaded. Used for async load/unload.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera6">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00108">108</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
<div class="fragment"><pre>00108 { <span class="keywordflow">return</span> <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> != 0; }
</pre></div> </td>
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</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda11" doxytag="NLSOUND::CBufferDSound::isFillMoreSupported" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual bool NLSOUND::CBufferDSound::isFillMoreSupported </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return true if the buffer is able to be fill part by part, false if it must be filled in one call (OpenAL 1.0 -> false)
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera7">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00078">78</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
<div class="fragment"><pre>00078 { <span class="keywordflow">return</span> <span class="keyword">false</span>; }
</pre></div> </td>
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</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda12" doxytag="NLSOUND::CBufferDSound::isStereo" ></a><p>
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<td class="md" nowrap valign="top"> virtual bool NLSOUND::CBufferDSound::isStereo </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Return true if the buffer is stereo, false if mono.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera8">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05521.html#l00069">69</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05381.html#a80a21">NLSOUND::Stereo16</a>, and <a class="el" href="a05381.html#a80a20">NLSOUND::Stereo8</a>.
<p>
<div class="fragment"><pre>00069 { <span class="keywordflow">return</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> == <a class="code" href="a05381.html#a80a20">Stereo8</a>) || (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> == <a class="code" href="a05381.html#a80a21">Stereo16</a>); }
</pre></div> </td>
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</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda13" doxytag="NLSOUND::CBufferDSound::presetName" ></a><p>
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<td class="md" nowrap valign="top"> void NLSOUND::CBufferDSound::presetName </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="a05378.html#a236">NLMISC::TStringId</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>bufferName</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Preset the name of the buffer. Used for async loading to give a name before the buffer is effectivly loaded. If the name after loading of the buffer doesn't match the preset name, the load will assert.
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera9">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00150">150</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
<div class="fragment"><pre>00151 {
00152 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> = bufferName;
00153 }
</pre></div> </td>
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</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda14" doxytag="NLSOUND::CBufferDSound::readRawBuffer" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> bool NLSOUND::CBufferDSound::readRawBuffer </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const std::string & </td>
<td class="mdname" nowrap> <em>name</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a7">uint8</a> * </td>
<td class="mdname" nowrap> <em>rawData</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname" nowrap> <em>dataSize</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a05381.html#a80">TSampleFormat</a> </td>
<td class="mdname" nowrap> <em>format</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a11">uint32</a> </td>
<td class="mdname" nowrap> <em>frequency</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05520.html#l00416">416</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05646.html#l01016">format</a>, <a class="el" href="a05622.html#l00333">nlassertex</a>, <a class="el" href="a05981.html#l00105">uint</a>, <a class="el" href="a05981.html#l00100">uint32</a>, and <a class="el" href="a05981.html#l00096">uint8</a>.
<p>
<div class="fragment"><pre>00417 {
00418 NL_ALLOC_CONTEXT(NLSOUND_CBufferDSound);
00419 <span class="comment">// free any existing data</span>
00420 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> != NULL)
00421 {
00422 free(_Data);
00423 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> = NULL;
00424 }
00425
00426 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a04223.html#a641">format</a>;
00427 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a> = dataSize;
00428 <span class="comment">// Allocate the sample buffer</span>
00429 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> = <span class="keyword">new</span> <a class="code" href="a04558.html#a7">uint8</a> [<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>];
00430
00431 <span class="comment">// read in the format data</span>
00432 memcpy(_Data, rawData, dataSize);
00433
00434 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a> = frequency;
00435
00436
00437 <span class="comment">// Allocate the sample buffer</span>
00438
00439 <span class="keyword">static</span> NLMISC::TStringId empty(CSoundDriverDSound::instance()->getStringMapper()->map(<span class="stringliteral">""</span>));
00440 NLMISC::TStringId nameId = CSoundDriverDSound::instance()->getStringMapper()->map(CFile::getFilenameWithoutExtension(name));
00441 <span class="comment">// if name is preseted, the name must match.</span>
00442 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> != empty)
00443 {
00444 <a class="code" href="a04199.html#a8">nlassertex</a>(nameId == _Name, (<span class="stringliteral">"The preseted name and buffer name doen't match !"</span>));
00445 }
00446 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> = nameId;
00447
00448 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00449 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda15" doxytag="NLSOUND::CBufferDSound::readWavBuffer" ></a><p>
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<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> bool NLSOUND::CBufferDSound::readWavBuffer </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const std::string & </td>
<td class="mdname" nowrap> <em>name</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a7">uint8</a> * </td>
<td class="mdname" nowrap> <em>wavData</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname" nowrap> <em>dataSize</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Load a sound file in the buffer. Throws an exception is an error occurs.
<p>
Fill the buffer partially (if <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSounda11">isFillMoreSupported()</a> only), beginning at the pos changed by a previous call to <a class="el" href="a02298.html#NLSOUND_1_1IBuffera1">fillMore()</a>. If the pos+srcsize exceeds the buffer size, the exceeding data is put at the beginning of the buffer. srcsize must be smaller than the buffer size.
<p>
Definition at line <a class="el" href="a05520.html#l00196">196</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05646.html#l00649">buffer</a>, <a class="el" href="a05646.html#l01016">format</a>, <a class="el" href="a05381.html#a80a19">NLSOUND::Mono16</a>, <a class="el" href="a05381.html#a80a17">NLSOUND::Mono8</a>, <a class="el" href="a05622.html#l00333">nlassertex</a>, <a class="el" href="a05646.html#l01124">num</a>, <a class="el" href="a05981.html#l00104">sint</a>, <a class="el" href="a05981.html#l00099">sint32</a>, <a class="el" href="a05646.html#l00645">size</a>, <a class="el" href="a05381.html#a80a21">NLSOUND::Stereo16</a>, <a class="el" href="a05381.html#a80a20">NLSOUND::Stereo8</a>, <a class="el" href="a05981.html#l00105">uint</a>, <a class="el" href="a05981.html#l00100">uint32</a>, and <a class="el" href="a05981.html#l00096">uint8</a>.
<p>
<div class="fragment"><pre>00197 {
00198 NL_ALLOC_CONTEXT(NLSOUND_CBufferDSound);
00199 <a class="code" href="a04558.html#a14">sint</a> error;
00200 <a class="code" href="a04558.html#a10">sint32</a> <a class="code" href="a04223.html#a653">num</a>;
00201 HMMIO hmmio;
00202 WAVEFORMATEX <a class="code" href="a04223.html#a641">format</a>;
00203 MMCKINFO riff_chunk;
00204 MMCKINFO data_chunk;
00205 MMCKINFO chunk;
00206
00207
00208 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> != NULL)
00209 {
00210 <span class="keyword">delete</span> [] <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>;
00211 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> = NULL;
00212 }
00213
00214 <span class="comment">/* NLMISC::CIFile ifile(file);</span>
00215 <span class="comment"> uint size = ifile.getFileSize();</span>
00216 <span class="comment"> uint8 *buffer = new uint8[ifile.getFileSize()];</span>
00217 <span class="comment"> ifile.serialBuffer(buffer, size);</span>
00218 <span class="comment">*/</span>
00219 <a class="code" href="a04558.html#a15">uint</a> <a class="code" href="a04223.html#a587">size</a> = dataSize;
00220 <a class="code" href="a04558.html#a7">uint8</a> *<a class="code" href="a04223.html#a589">buffer</a> = wavData;
00221
00222 MMIOINFO mmioInfo;
00223 memset(&mmioInfo, 0, <span class="keyword">sizeof</span>(mmioInfo));
00224 mmioInfo.pchBuffer = (<span class="keywordtype">char</span>*)<a class="code" href="a04223.html#a589">buffer</a>;
00225 mmioInfo.fccIOProc = FOURCC_MEM;
00226 mmioInfo.cchBuffer = <a class="code" href="a04223.html#a587">size</a>;
00227
00228
00229 hmmio = mmioOpen(NULL, &mmioInfo, MMIO_READ | MMIO_DENYWRITE);
00230
00231 <span class="keywordflow">if</span> (hmmio == NULL)
00232 {
00233 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00234 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Failed to open the file"</span>);
00235 }
00236
00237
00238 <span class="comment">// Check it's a WAVE file </span>
00239 riff_chunk.ckid = FOURCC_RIFF;
00240
00241 error = (<a class="code" href="a04558.html#a14">sint</a>) mmioDescend(hmmio, &riff_chunk, NULL, 0);
00242
00243 <span class="keywordflow">if</span> ((error != 0) || (riff_chunk.ckid != FOURCC_RIFF) || (riff_chunk.fccType != mmioFOURCC(<span class="charliteral">'W'</span>, <span class="charliteral">'A'</span>, <span class="charliteral">'V'</span>, <span class="charliteral">'E'</span>)))
00244 {
00245 mmioClose(hmmio, 0);
00246 <span class="keyword">delete</span> <a class="code" href="a04223.html#a589">buffer</a>;
00247 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Not a WAVE file"</span>);
00248 }
00249
00250
00251 <span class="comment">// Search the format chunk </span>
00252 chunk.ckid = mmioFOURCC(<span class="charliteral">'f'</span>, <span class="charliteral">'m'</span>, <span class="charliteral">'t'</span>, <span class="charliteral">' '</span>);
00253
00254 error = (<a class="code" href="a04558.html#a14">sint</a>) mmioDescend(hmmio, &chunk, &riff_chunk, MMIO_FINDCHUNK);
00255
00256 <span class="keywordflow">if</span> (error != 0)
00257 {
00258 mmioClose(hmmio, 0);
00259
00260 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00261 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Couldn't find the format chunk"</span>);
00262 }
00263
00264 <span class="keywordflow">if</span> (chunk.cksize < (<span class="keywordtype">long</span>) <span class="keyword">sizeof</span>(PCMWAVEFORMAT))
00265 {
00266 mmioClose(hmmio, 0);
00267 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00268 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Invalid format chunk size"</span>);
00269 }
00270
00271
00272 <span class="comment">// read in the format data</span>
00273
00274 <a class="code" href="a04223.html#a653">num</a> = mmioRead(hmmio, (HPSTR) &format, (<span class="keywordtype">long</span>) <span class="keyword">sizeof</span>(format));
00275 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a653">num</a> != (<span class="keywordtype">long</span>) <span class="keyword">sizeof</span>(<a class="code" href="a04223.html#a641">format</a>))
00276 {
00277 mmioClose(hmmio, 0);
00278 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00279 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Read failed"</span>);
00280 }
00281
00282 <a class="code" href="a04223.html#a641">format</a>.cbSize = 0;
00283
00284 <span class="comment">// Get out of the format chunk</span>
00285
00286 <span class="keywordflow">if</span> (mmioAscend(hmmio, &chunk, 0) != 0)
00287 {
00288 mmioClose(hmmio, 0);
00289 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00290 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Read failed"</span>);
00291 }
00292
00293
00294 <span class="comment">// copy the format data </span>
00295
00296 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.wFormatTag != WAVE_FORMAT_PCM)
00297 {
00298 mmioClose(hmmio, 0);
00299 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00300 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Unsupported sample format"</span>);
00301 }
00302
00303 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a> = <a class="code" href="a04223.html#a641">format</a>.nSamplesPerSec;
00304
00305 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.nChannels == 1)
00306 {
00307 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.wBitsPerSample == 8)
00308 {
00309 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a05381.html#a80a17">Mono8</a>;
00310 }
00311 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.wBitsPerSample == 16)
00312 {
00313 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a05381.html#a80a19">Mono16</a>;
00314 }
00315 <span class="keywordflow">else</span>
00316 {
00317 mmioClose(hmmio, 0);
00318 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00319 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Unsupported sample size"</span>);
00320 }
00321 }
00322 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.nChannels == 2)
00323 {
00324 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.wBitsPerSample == 8)
00325 {
00326 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a05381.html#a80a20">Stereo8</a>;
00327 }
00328 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a641">format</a>.wBitsPerSample == 16)
00329 {
00330 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a05381.html#a80a21">Stereo16</a>;
00331 }
00332 <span class="keywordflow">else</span>
00333 {
00334 mmioClose(hmmio, 0);
00335 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00336 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Unsupported sample size"</span>);
00337 }
00338 }
00339 <span class="keywordflow">else</span> <span class="comment">// Shouldn't normally happen</span>
00340 {
00341 mmioClose(hmmio, 0);
00342 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00343 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Unsupported number of channels"</span>);
00344 }
00345
00346
00347 <span class="comment">// Set the file position to the beginning of the data chunk */</span>
00348
00349 <a class="code" href="a04558.html#a10">sint32</a> pos = mmioSeek(hmmio, riff_chunk.dwDataOffset + <span class="keyword">sizeof</span>(FOURCC), SEEK_SET);
00350
00351 <span class="keywordflow">if</span> (pos < 0)
00352 {
00353 mmioClose(hmmio, 0);
00354 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00355 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Read to set the read position"</span>);
00356 }
00357
00358 data_chunk.ckid = mmioFOURCC(<span class="charliteral">'d'</span>, <span class="charliteral">'a'</span>, <span class="charliteral">'t'</span>, <span class="charliteral">'a'</span>);
00359
00360 <span class="keywordflow">if</span> (mmioDescend(hmmio, &data_chunk, &riff_chunk, MMIO_FINDCHUNK) != 0)
00361 {
00362 mmioClose(hmmio, 0);
00363 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00364 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Read to set the read position"</span>);
00365 }
00366
00367
00368 <span class="comment">// Allocate the sample buffer</span>
00369 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a> = data_chunk.cksize;
00370
00371 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> = <span class="keyword">new</span> <a class="code" href="a04558.html#a7">uint8</a>[<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>];
00372
00373 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a> == NULL)
00374 {
00375 mmioClose(hmmio, 0);
00376 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00377 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Out of memory"</span>);
00378 }
00379
00380
00381 <span class="comment">// Read the sample data</span>
00382
00383 <a class="code" href="a04223.html#a653">num</a> = mmioRead(hmmio, (HPSTR) _Data, _Size);
00384
00385 <span class="keywordflow">if</span> (<a class="code" href="a04223.html#a653">num</a> < 0)
00386 {
00387 <span class="keyword">delete</span> [] <a class="code" href="a04223.html#a589">buffer</a>;
00388 <span class="keywordflow">throw</span> ESoundDriver(<span class="stringliteral">"Failed to read the samples"</span>);
00389 }
00390 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((<a class="code" href="a04558.html#a11">uint32</a>) <a class="code" href="a04223.html#a653">num</a> < <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">_Size</a>)
00391 {
00392 <span class="comment">// FIXME: print warning or throw exception ???</span>
00393 <span class="keywordtype">char</span>* p = (<span class="keywordtype">char</span>*) <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">_Data</a>;
00394 ZeroMemory(p + num, _Size - num);
00395 }
00396
00397
00398 mmioClose(hmmio, 0);
00399
00400 <span class="comment">// delete [] buffer;</span>
00401
00402 <span class="keyword">static</span> NLMISC::TStringId empty(CSoundDriverDSound::instance()->getStringMapper()->map(<span class="stringliteral">""</span>));
00403 <span class="comment">// NLMISC::TStringId name = CSoundDriverDSound::instance()->getStringMapper()->map(CFile::getFilenameWithoutExtension(file));</span>
00404 NLMISC::TStringId nameId = CSoundDriverDSound::instance()->getStringMapper()->map(CFile::getFilenameWithoutExtension(name));
00405 <span class="comment">// if name is preseted, the name must match.</span>
00406 <span class="keywordflow">if</span> (<a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> != empty)
00407 {
00408 <a class="code" href="a04199.html#a8">nlassertex</a>(nameId == _Name, (<span class="stringliteral">"The preseted name and buffer name doen't match !"</span>));
00409 }
00410 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">_Name</a> = nameId;
00411
00412 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00413 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSounda16" doxytag="NLSOUND::CBufferDSound::setFormat" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void NLSOUND::CBufferDSound::setFormat </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a05381.html#a80">TSampleFormat</a> </td>
<td class="mdname" nowrap> <em>format</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname" nowrap> <em>freq</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Set the sample format. Example: freq=44100.
<p>
<p>
Implements <a class="el" href="a02298.html#NLSOUND_1_1IBuffera10">NLSOUND::IBuffer</a>.
<p>
Definition at line <a class="el" href="a05520.html#l00156">156</a> of file <a class="el" href="a05520.html">buffer_dsound.cpp</a>.
<p>
References <a class="el" href="a05521.html#l00118">_Format</a>, <a class="el" href="a05521.html#l00120">_Freq</a>, <a class="el" href="a05646.html#l01016">format</a>, and <a class="el" href="a05981.html#l00105">uint</a>.
<p>
<div class="fragment"><pre>00157 {
00158 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">_Format</a> = <a class="code" href="a04223.html#a641">format</a>;
00159 <a class="code" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">_Freq</a> = freq;
00160 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1IBuffera11" doxytag="NLSOUND::CBufferDSound::setSize" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual void NLSOUND::IBuffer::setSize </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a04558.html#a11">uint32</a> </td>
<td class="mdname1" valign="top" nowrap> <em>size</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline, virtual, inherited]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Force the buffer size without filling data (if <a class="el" href="a02298.html#NLSOUND_1_1IBuffera7">isFillMoreSupported()</a> only).
<p>
<p>
Reimplemented in <a class="el" href="a02297.html#NLSOUND_1_1CBufferALa16">NLSOUND::CBufferAL</a>.
<p>
Definition at line <a class="el" href="a05517.html#l00073">73</a> of file <a class="el" href="a05517.html">buffer.h</a>.
<p>
References <a class="el" href="a05646.html#l00645">size</a>, and <a class="el" href="a05981.html#l00100">uint32</a>.
<p>
<div class="fragment"><pre>00073 { <span class="keywordflow">throw</span> ESoundDriverNotSupp(); }
</pre></div> </td>
</tr>
</table>
<hr><h2>Field Documentation</h2>
<a class="anchor" name="NLSOUND_1_1CBufferDSoundr0" doxytag="NLSOUND::CBufferDSound::_Data" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a7">uint8</a>* <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr0">NLSOUND::CBufferDSound::_Data</a><code> [private]</code>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00114">114</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>. </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSoundr1" doxytag="NLSOUND::CBufferDSound::_Format" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a05381.html#a80">TSampleFormat</a> <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr1">NLSOUND::CBufferDSound::_Format</a><code> [private]</code>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00118">118</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
Referenced by <a class="el" href="a05520.html#l00131">CBufferDSound()</a>, <a class="el" href="a05520.html#l00451">getBufferADPCMEncoded()</a>, <a class="el" href="a05520.html#l00474">getBufferMono16()</a>, <a class="el" href="a05520.html#l00169">getDuration()</a>, <a class="el" href="a05521.html#l00072">getFormat()</a>, <a class="el" href="a05521.html#l00069">isStereo()</a>, <a class="el" href="a05520.html#l00416">readRawBuffer()</a>, <a class="el" href="a05520.html#l00196">readWavBuffer()</a>, and <a class="el" href="a05520.html#l00156">setFormat()</a>. </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSoundr2" doxytag="NLSOUND::CBufferDSound::_Freq" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a15">uint</a> <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr2">NLSOUND::CBufferDSound::_Freq</a><code> [private]</code>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00120">120</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>.
<p>
Referenced by <a class="el" href="a05520.html#l00131">CBufferDSound()</a>, <a class="el" href="a05520.html#l00169">getDuration()</a>, <a class="el" href="a05521.html#l00072">getFormat()</a>, <a class="el" href="a05520.html#l00416">readRawBuffer()</a>, <a class="el" href="a05520.html#l00196">readWavBuffer()</a>, and <a class="el" href="a05520.html#l00156">setFormat()</a>. </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSoundr3" doxytag="NLSOUND::CBufferDSound::_Name" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a05378.html#a236">NLMISC::TStringId</a> <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr3">NLSOUND::CBufferDSound::_Name</a><code> [private]</code>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00112">112</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>. </td>
</tr>
</table>
<a class="anchor" name="NLSOUND_1_1CBufferDSoundr4" doxytag="NLSOUND::CBufferDSound::_Size" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a11">uint32</a> <a class="el" href="a02299.html#NLSOUND_1_1CBufferDSoundr4">NLSOUND::CBufferDSound::_Size</a><code> [private]</code>
</table>
</td>
</tr>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="a05521.html#l00116">116</a> of file <a class="el" href="a05521.html">buffer_dsound.h</a>. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="a05521.html">buffer_dsound.h</a><li><a class="el" href="a05520.html">buffer_dsound.cpp</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Tue Mar 16 14:34:08 2004 for NeL by
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