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<h1>csplugincommon/sndsys/convert.h</h1><a href="convert_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">    Copyright (C) 2004 by Andrew Mann</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment">    This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment">    modify it under the terms of the GNU Library General Public</span>
<a name="l00006"></a>00006 <span class="comment">    License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment">    version 2 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment">    This library is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</span>
<a name="l00012"></a>00012 <span class="comment">    Library General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">    You should have received a copy of the GNU Library General Public</span>
<a name="l00015"></a>00015 <span class="comment">    License along with this library; if not, write to the Free</span>
<a name="l00016"></a>00016 <span class="comment">    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00017"></a>00017 <span class="comment">*/</span>
<a name="l00018"></a>00018 
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef __CS_SNDSYS_CONVERT_H__</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define __CS_SNDSYS_CONVERT_H__</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00032"></a><a class="code" href="convert_8h.html#3753a3357de67633466955d89dc78aca">00032</a> <span class="preprocessor">#define CS_SOUND_ELEMENT_MAX_CHANNELS 8</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00056"></a><a class="code" href="convert_8h.html#1e4762f59d72a6cf34ce725c5adc9c93">00056</a> <span class="preprocessor">#define CS_SOUND_INTERNAL_FREQUENCY_DIVISOR 1024</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span>
<a name="l00058"></a>00058 <span class="keyword">namespace </span>CS
<a name="l00059"></a>00059 {
<a name="l00060"></a><a class="code" href="namespaceCS_1_1SndSys.html">00060</a> <span class="keyword">namespace </span>SndSys
<a name="l00061"></a>00061 {
<a name="l00101"></a><a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html">00101</a> <span class="keyword">class </span>CS_CRYSTALSPACE_EXPORT <a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html" title="A PCMSampleConverter object converts PCM data from one format to another.">PCMSampleConverter</a>
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <span class="keyword">public</span>:
<a name="l00105"></a>00105   <a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html" title="A PCMSampleConverter object converts PCM data from one format to another.">PCMSampleConverter</a>(<span class="keywordtype">int</span> source_channels, <span class="keywordtype">int</span> source_bitspersample, 
<a name="l00106"></a>00106     <span class="keywordtype">int</span> source_frequency, <span class="keywordtype">bool</span> swap16=<span class="keyword">false</span>);
<a name="l00107"></a>00107   ~<a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html" title="A PCMSampleConverter object converts PCM data from one format to another.">PCMSampleConverter</a>();
<a name="l00108"></a>00108 
<a name="l00121"></a>00121   <span class="keywordtype">int</span> GetRequiredOutputBufferMultiple(<span class="keywordtype">int</span> dest_channels, 
<a name="l00122"></a>00122     <span class="keywordtype">int</span> dest_bitspersample, <span class="keywordtype">int</span> dest_frequency);
<a name="l00123"></a>00123 
<a name="l00124"></a>00124 
<a name="l00135"></a>00135   <span class="keywordtype">int</span> ConvertBuffer(<span class="keyword">const</span> <span class="keywordtype">void</span> *source, <span class="keywordtype">size_t</span> source_len, <span class="keywordtype">void</span> *dest, 
<a name="l00136"></a>00136     <span class="keywordtype">int</span> dest_channels, <span class="keywordtype">int</span> dest_bitspersample, <span class="keywordtype">int</span> dest_frequency);
<a name="l00137"></a>00137 
<a name="l00152"></a>00152   <span class="keywordtype">void</span> SetSourceProperties(<span class="keywordtype">int</span> source_channels, <span class="keywordtype">int</span> source_bitspersample, 
<a name="l00153"></a>00153     <span class="keywordtype">int</span> source_frequency);
<a name="l00154"></a>00154 
<a name="l00155"></a>00155 <span class="keyword">protected</span>:
<a name="l00156"></a>00156   <span class="keywordtype">bool</span> ReadFullSample8(<span class="keyword">const</span> <span class="keywordtype">void</span> **source, <span class="keywordtype">size_t</span> *source_len, 
<a name="l00157"></a>00157     <span class="keywordtype">int</span> *sample_buffer);
<a name="l00158"></a>00158   <span class="keywordtype">bool</span> ReadFullSample16(<span class="keyword">const</span> <span class="keywordtype">void</span> **source, <span class="keywordtype">size_t</span> *source_len, 
<a name="l00159"></a>00159     <span class="keywordtype">int</span> *sample_buffer);
<a name="l00160"></a>00160   <span class="keywordtype">bool</span> ReadFullSample(<span class="keyword">const</span> <span class="keywordtype">void</span> **source, <span class="keywordtype">size_t</span>  *source_len, 
<a name="l00161"></a>00161     <span class="keywordtype">int</span> *sample_buffer);
<a name="l00162"></a>00162   <span class="keywordtype">int</span> WriteSample8(<span class="keywordtype">int</span> *sample_buffer, <span class="keywordtype">void</span> **dest, <span class="keywordtype">int</span> dest_channels);
<a name="l00163"></a>00163   <span class="keywordtype">int</span> WriteSample16(<span class="keywordtype">int</span> *sample_buffer, <span class="keywordtype">void</span> **dest, <span class="keywordtype">int</span> dest_channels);
<a name="l00164"></a>00164   <span class="keywordtype">int</span> WriteSample(<span class="keywordtype">int</span> *sample_buffer, <span class="keywordtype">void</span> **dest, <span class="keywordtype">int</span> dest_channels, 
<a name="l00165"></a>00165     <span class="keywordtype">int</span> dest_bitspersample);
<a name="l00166"></a>00166   <span class="keywordtype">size_t</span> AdvanceSourceSamples(<span class="keyword">const</span> <span class="keywordtype">void</span> **source, <span class="keywordtype">size_t</span> *source_len, 
<a name="l00167"></a>00167     <span class="keywordtype">size_t</span> samples_to_advance, <span class="keywordtype">int</span> *sample_buffer);
<a name="l00168"></a>00168 
<a name="l00169"></a>00169 <span class="keyword">protected</span>:
<a name="l00170"></a><a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html#70e82d8486b0076de29741816f80145c">00170</a>   <span class="keywordtype">int</span> last_sample[<a class="code" href="convert_8h.html#3753a3357de67633466955d89dc78aca" title="This is the maximum number of channels we&amp;#39;ll mix.">CS_SOUND_ELEMENT_MAX_CHANNELS</a>];
<a name="l00171"></a><a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html#c6eef20af5e344f482599e5374ddee4b">00171</a>   <span class="keywordtype">int</span> position_offset;
<a name="l00172"></a><a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html#4237ae3a26ab9e22f02ecb112d02df87">00172</a>   <span class="keywordtype">int</span> src_channels,src_bytes,src_frequency;
<a name="l00173"></a><a class="code" href="classCS_1_1SndSys_1_1PCMSampleConverter.html#44285cd8226e6cd619aef599e4ef87ea">00173</a>   <span class="keywordtype">bool</span> swap_16;
<a name="l00174"></a>00174 };
<a name="l00175"></a>00175 
<a name="l00176"></a>00176 } <span class="comment">// namespace SndSys</span>
<a name="l00177"></a>00177 } <span class="comment">// namespace CS</span>
<a name="l00178"></a>00178 
<a name="l00179"></a>00179 <span class="preprocessor">#endif // __CS_SNDSYS_CONVERT_H__</span>
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