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authorneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
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+<hr><h1>buffer_al.cpp</h1><a href="buffer__al_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 <font class="preprocessor">#include "<a class="code" href="stdopenal_8h.html">stdopenal.h</a>"</font>
+00027
+00028 <font class="preprocessor">#include "<a class="code" href="buffer__al_8h.html">buffer_al.h</a>"</font>
+00029
+00030 <font class="keyword">namespace </font>NLSOUND {
+00031
+00032
+00033 <font class="comment">/*</font>
+00034 <font class="comment"> * Constructor</font>
+00035 <font class="comment"> */</font>
+<a name="l00036"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a0">00036</a> CBufferAL::CBufferAL( ALuint buffername ) :
+00037 IBuffer(), _BufferName(buffername), _SampleFormat(AL_INVALID), _Frequency(0)
+00038 {
+00039 }
+00040
+00041
+00042 <font class="comment">/*</font>
+00043 <font class="comment"> * Destructor</font>
+00044 <font class="comment"> */</font>
+<a name="l00045"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a1">00045</a> CBufferAL::~CBufferAL()
+00046 {
+00047 CSoundDriverAL *sdal = CSoundDriverAL::instance();
+00048 <font class="comment">//nlinfo( "Deleting buffer (name %u)", _BufferName );</font>
+00049 sdal-&gt;removeBuffer( <font class="keyword">this</font> );
+00050 }
+00051
+<a name="l00052"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a14">00052</a> <font class="keywordtype">void</font> CBufferAL::presetName(<font class="keyword">const</font> std::string &amp;bufferName)
+00053 {
+00054 <a class="code" href="classNLSOUND_1_1CBufferAL.html#o1">_Name</a> = <a class="code" href="classNLSOUND_1_1CBufferAL.html#a11">bufferName</a>;
+00055 }
+00056
+00057
+00058 <font class="comment">/*</font>
+00059 <font class="comment"> * Return the size of the buffer, in bytes</font>
+00060 <font class="comment"> */</font>
+<a name="l00061"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a4">00061</a> uint32 CBufferAL::getSize()<font class="keyword"> const</font>
+00062 <font class="keyword"></font>{
+00063 ALint <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>;
+00064 alGetBufferi( <a class="code" href="classNLSOUND_1_1CBufferAL.html#o0">_BufferName</a>, AL_SIZE, &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a> );
+00065 <a class="code" href="debug_8h.html#a6">nlassert</a>( alGetError() == AL_NO_ERROR );
+00066 <font class="keywordflow">return</font> <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>;
+00067 }
+00068
+00069
+00070 <font class="comment">/*</font>
+00071 <font class="comment"> * Return true if the buffer is stereo, false if mono</font>
+00072 <font class="comment"> */</font>
+<a name="l00073"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a6">00073</a> <font class="keywordtype">bool</font> CBufferAL::isStereo()<font class="keyword"> const</font>
+00074 <font class="keyword"></font>{
+00075 <font class="keywordflow">return</font> (<a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a>==AL_FORMAT_STEREO8) || (<a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a>==AL_FORMAT_STEREO16);
+00076 }
+00077
+00078
+00079 <font class="comment">/*</font>
+00080 <font class="comment"> * Return the format and frequency</font>
+00081 <font class="comment"> */</font>
+<a name="l00082"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a7">00082</a> <font class="keywordtype">void</font> CBufferAL::getFormat( <a class="code" href="namespaceNLSOUND.html#a83">TSampleFormat</a>&amp; <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a>, uint&amp; freq )<font class="keyword"> const</font>
+00083 <font class="keyword"></font>{
+00084 <font class="keywordflow">switch</font> ( _SampleFormat )
+00085 {
+00086 <font class="keywordflow">case</font> AL_FORMAT_MONO8 : <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a> = <a class="code" href="namespaceNLSOUND.html#a83a21">Mono8</a>; <font class="keywordflow">break</font>;
+00087 <font class="keywordflow">case</font> AL_FORMAT_MONO16 : <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a> = <a class="code" href="namespaceNLSOUND.html#a83a22">Mono16</a>; <font class="keywordflow">break</font>;
+00088 <font class="keywordflow">case</font> AL_FORMAT_STEREO8 : <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a> = <a class="code" href="namespaceNLSOUND.html#a83a23">Stereo8</a>; <font class="keywordflow">break</font>;
+00089 <font class="keywordflow">case</font> AL_FORMAT_STEREO16 : <a class="code" href="driver__opengl__extension__def_8h.html#a398">format</a> = <a class="code" href="namespaceNLSOUND.html#a83a24">Stereo16</a>; <font class="keywordflow">break</font>;
+00090 <font class="keywordflow">default</font> : <a class="code" href="debug_8h.html#a12">nlstop</a>;
+00091 }
+00092 freq = <a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a>;
+00093 }
+00094
+00095
+00096 <font class="comment">/*</font>
+00097 <font class="comment"> * Return the duration (in ms) of the sample in the buffer</font>
+00098 <font class="comment"> */</font>
+<a name="l00099"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a5">00099</a> <font class="keywordtype">float</font> CBufferAL::getDuration()<font class="keyword"> const</font>
+00100 <font class="keyword"></font>{
+00101 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a> == 0 )
+00102 {
+00103 <font class="keywordflow">return</font> 0;
+00104 }
+00105 uint32 bytespersample;
+00106 <font class="keywordflow">switch</font> ( _SampleFormat )
+00107 {
+00108 <font class="keywordflow">case</font> AL_FORMAT_MONO8 : bytespersample = 1; <font class="keywordflow">break</font>;
+00109 <font class="keywordflow">case</font> AL_FORMAT_MONO16 : bytespersample = 2; <font class="keywordflow">break</font>;
+00110 <font class="keywordflow">case</font> AL_FORMAT_STEREO8 : bytespersample = 2; <font class="keywordflow">break</font>;
+00111 <font class="keywordflow">case</font> AL_FORMAT_STEREO16 : bytespersample = 4; <font class="keywordflow">break</font>;
+00112 <font class="keywordflow">default</font> : <font class="keywordflow">return</font> 0;
+00113 }
+00114 <font class="keywordflow">return</font> (float)(<a class="code" href="classNLSOUND_1_1CBufferAL.html#a4">getSize</a>()) * 1000.0f / (float)<a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a> / (float)bytespersample;
+00115 }
+00116
+00117
+00118 <font class="comment">/*</font>
+00119 <font class="comment"> * Set the sample format. Example: freq=44100</font>
+00120 <font class="comment"> */</font>
+<a name="l00121"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a2">00121</a> <font class="keywordtype">void</font> CBufferAL::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 )
+00122 {
+00123 <font class="keywordflow">switch</font> ( format )
+00124 {
+00125 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a21">Mono8</a> : <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> = AL_FORMAT_MONO8; <font class="keywordflow">break</font>;
+00126 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a22">Mono16</a> : <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> = AL_FORMAT_MONO16; <font class="keywordflow">break</font>;
+00127 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a23">Stereo8</a> : <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> = AL_FORMAT_STEREO8; <font class="keywordflow">break</font>;
+00128 <font class="keywordflow">case</font> <a class="code" href="namespaceNLSOUND.html#a83a24">Stereo16</a> : <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> = AL_FORMAT_STEREO16; <font class="keywordflow">break</font>;
+00129 <font class="keywordflow">default</font> : <a class="code" href="debug_8h.html#a12">nlstop</a>; <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> = AL_INVALID;
+00130 }
+00131 <a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a> = freq;
+00132 }
+00133
+00134
+00135 <font class="comment">/*</font>
+00136 <font class="comment"> * Set the buffer size and fill the buffer. Return true if ok.</font>
+00137 <font class="comment"> */</font>
+<a name="l00138"></a><a class="code" href="classNLSOUND_1_1CBufferAL.html#a3">00138</a> <font class="keywordtype">bool</font> CBufferAL::fillBuffer( <font class="keywordtype">void</font> *<a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>, uint32 bufsize )
+00139 {
+00140 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a> != NULL );
+00141 <a class="code" href="debug_8h.html#a6">nlassert</a>( (<a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a> != AL_INVALID) &amp;&amp; (<a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a> != 0 ) );
+00142
+00143 <font class="comment">// Fill buffer</font>
+00144 alBufferData( <a class="code" href="classNLSOUND_1_1CBufferAL.html#o0">_BufferName</a>, <a class="code" href="classNLSOUND_1_1CBufferAL.html#o2">_SampleFormat</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a409">src</a>, bufsize, <a class="code" href="classNLSOUND_1_1CBufferAL.html#o3">_Frequency</a> );
+00145
+00146 <font class="comment">// Error handling</font>
+00147 <font class="keywordflow">return</font> ( alGetError() == AL_NO_ERROR );
+00148 }
+00149
+00150
+00151 } <font class="comment">// NLSOUND</font>
+</pre></div>
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