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<div class="title">al_Ambisonics.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef INCLUDE_AL_AMBISONICS_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define INCLUDE_AL_AMBISONICS_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/* Allocore --</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Multimedia / virtual environment application class library</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> Copyright (C) 2009. AlloSphere Research Group, Media Arts & Technology,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> UCSB. Copyright (C) 2012. The Regents of the University of California. All</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"></span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> met:</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"></span> </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> copyright notice, this list of conditions and the following disclaimer in the</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> distribution.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"></span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> Neither the name of the University of California nor the names</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> of its contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> this software without specific prior written permission.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"></span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"></span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> File description:</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> Higher order Ambisonics encoding/decoding</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> File author(s):</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> Graham Wakefield, 2010, [email protected]</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> Lance Putnam, 2010, [email protected]</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span> </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> Based on prior work also contributed to by:</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> Jorge Castellanos</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> Florian Hollerweger</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#include "al/math/al_Vec.hpp"</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#include "al/sound/al_Spatializer.hpp"</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#include "al/sound/al_Speaker.hpp"</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#include "al/spatial/al_DistAtten.hpp"</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#include "al/spatial/al_Pose.hpp"</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> TODO: near-field compensation</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> acknowledges that the speakers are at a finite distance from the</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> listener. This a simple Minimum Phase HP filter (on directional signals, not</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> the W component) to deal with "proximity effect" because the speakers are</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> 'near' the listener.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> f = c / (2 * PI * d) = 54.6 / d Hz c : speed of sound 343 m/s</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> d : speaker distance m</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"></span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> Should be IIR, because it mostly affects LF.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"></span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> If we pass speaker distance, then we might also want to attenuate/delay</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> speakers for irregular layouts.</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"></span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> @see "Near Field filters for Higher Order Ambisonics" Fons ADRIAENSEN</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> http://kokkinizita.linuxaudio.org/papers/index.html</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">namespace </span><a class="code" href="namespaceal.html">al</a> {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html"> 114</a></span> <span class="keyword">class </span><a class="code" href="classal_1_1_ambi_base.html">AmbiBase</a> {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#ac0c6a652032d3177f10b9a42631ada31"> 118</a></span>  <a class="code" href="classal_1_1_ambi_base.html#ac0c6a652032d3177f10b9a42631ada31">AmbiBase</a>(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">virtual</span> ~<a class="code" href="classal_1_1_ambi_base.html">AmbiBase</a>();</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492"> 123</a></span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mDim; }</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
<div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59"> 126</a></span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mOrder; }</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6"> 129</a></span>  <span class="keyword">const</span> <span class="keywordtype">float</span> *<a class="code" href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6">weights</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mWeights; }</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978"> 132</a></span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mChannels; }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a0f2e990b76fb064986be93df330f6d2e"> 135</a></span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#a0f2e990b76fb064986be93df330f6d2e">dim</a>(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a6b82ca53522c3a6f41d18e69e5569145"> 138</a></span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#a6b82ca53522c3a6f41d18e69e5569145">order</a>(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#af1c3d2994df58b89e6dcb07998f0c428"> 141</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#af1c3d2994df58b89e6dcb07998f0c428">onChannelsChange</a>() {}</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> channelsToUniformOrder(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
<div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c"> 147</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c">encodeWeightsFuMa</a>(<span class="keywordtype">float</span> *<a class="code" href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6">weights</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>,</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordtype">float</span> azimuth, <span class="keywordtype">float</span> elevation);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
<div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a097913d9f90a224955fc584ad53fc240"> 152</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#a097913d9f90a224955fc584ad53fc240">encodeWeightsFuMa</a>(<span class="keywordtype">float</span> *ws, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y,</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">float</span> z);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div>
<div class="line"><a name="l00156"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#adfd75225c6530a5f96ba9124956db489"> 156</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#adfd75225c6530a5f96ba9124956db489">encodeWeightsFuMa16</a>(<span class="keywordtype">float</span> *<a class="code" href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6">weights</a>, <span class="keywordtype">float</span> azimuth,</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">float</span> elevation);</div>
<div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_base.html#a3c3423bd26d82a4f6e618b9151537760"> 159</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_base.html#a3c3423bd26d82a4f6e618b9151537760">encodeWeightsFuMa16</a>(<span class="keywordtype">float</span> *ws, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y, <span class="keywordtype">float</span> z);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> orderToChannels(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> orderToChannelsH(<span class="keywordtype">int</span> orderH);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> orderToChannelsV(<span class="keywordtype">int</span> orderV);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> channelsToOrder(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>);</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> channelsToDimensions(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">int</span> mDim; <span class="comment">// dimensions - 2d or 3d</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordtype">int</span> mOrder; <span class="comment">// order - 0th, 1st, 2nd, or 3rd</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">int</span> mChannels; <span class="comment">// cached for efficiency</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordtype">float</span> *mWeights; <span class="comment">// weights for each ambi channel</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">static</span> <span class="keywordtype">void</span> resize(T *&a, <span class="keywordtype">int</span> n);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> };</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html"> 180</a></span> <span class="keyword">class </span><a class="code" href="classal_1_1_ambi_decode.html">AmbiDecode</a> : <span class="keyword">public</span> <a class="code" href="classal_1_1_ambi_base.html">AmbiBase</a> {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a4e9aae8fb5a863f6d3478c1fb33f68d3"> 186</a></span>  <a class="code" href="classal_1_1_ambi_decode.html#a4e9aae8fb5a863f6d3478c1fb33f68d3">AmbiDecode</a>(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a5b9cb4388aaab83cb1e0ac53e7150263">numSpeakers</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a68d58bc98981242eb102f9fb95ab89b6">flavor</a> = 1);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">virtual</span> ~<a class="code" href="classal_1_1_ambi_decode.html">AmbiDecode</a>();</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#ae620992c6ec2ca8c14ca524fdd8ff104"> 195</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_decode.html#ae620992c6ec2ca8c14ca524fdd8ff104">decode</a>(<span class="keywordtype">float</span> *dec, <span class="keyword">const</span> <span class="keywordtype">float</span> *enc, <span class="keywordtype">int</span> numDecFrames) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordtype">float</span> decodeWeight(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a74a06b8434efd5417bc3a9de8019f350">speaker</a>, <span class="keywordtype">int</span> channel)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> mWeights[channel] * mDecodeMatrix[<a class="code" href="classal_1_1_ambi_decode.html#a74a06b8434efd5417bc3a9de8019f350">speaker</a> * <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>() + channel];</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a68d58bc98981242eb102f9fb95ab89b6"> 202</a></span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a68d58bc98981242eb102f9fb95ab89b6">flavor</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mFlavor; }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
<div class="line"><a name="l00205"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a5b9cb4388aaab83cb1e0ac53e7150263"> 205</a></span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a5b9cb4388aaab83cb1e0ac53e7150263">numSpeakers</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mNumSpeakers; }</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordtype">void</span> print(std::ostream &stream) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#aa4f163784d147e0a410b8b98d3188f03"> 210</a></span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_decode.html#aa4f163784d147e0a410b8b98d3188f03">flavor</a>(<span class="keywordtype">int</span> type);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a3f4490413aa99bae11a7c0d186073efe"> 213</a></span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_decode.html#a3f4490413aa99bae11a7c0d186073efe">numSpeakers</a>(<span class="keywordtype">int</span> num);</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">void</span> setSpeakerRadians(<span class="keywordtype">int</span> index, <span class="keywordtype">int</span> deviceChannel, <span class="keywordtype">float</span> azimuth,</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordtype">float</span> elevation, <span class="keywordtype">float</span> amp = 1.f);</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordtype">void</span> setSpeaker(<span class="keywordtype">int</span> index, <span class="keywordtype">int</span> deviceChannel, <span class="keywordtype">float</span> azimuth,</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">float</span> elevation = 0, <span class="keywordtype">float</span> amp = 1.f);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// void zero(); ///< Zeroes out internal</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// ambisonic frame.</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">void</span> setSpeakers(<a class="code" href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">Speakers</a> *spkrs);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordtype">void</span> setSpeakers(<a class="code" href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">Speakers</a> &spkrs);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// float * azimuths(); ///< Returns pointer to</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// speaker azimuths.</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// float * elevations(); ///< Returns pointer to speaker</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// elevations. float * frame() const; ///< Returns</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// pointer to ambisonic channel frame used by decode(int)</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  </div>
<div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a74a06b8434efd5417bc3a9de8019f350"> 233</a></span>  <a class="code" href="classal_1_1_speaker.html">Speaker</a> &<a class="code" href="classal_1_1_ambi_decode.html#a74a06b8434efd5417bc3a9de8019f350">speaker</a>(<span class="keywordtype">int</span> num) { <span class="keywordflow">return</span> mSpeakers[num]; }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
<div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_decode.html#a93836520a8b5f44f507bddadcf0818e2"> 235</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_decode.html#a93836520a8b5f44f507bddadcf0818e2">onChannelsChange</a>();</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordtype">int</span> mNumSpeakers;</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">int</span> mFlavor; <span class="comment">// decode flavor</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordtype">float</span> *mDecodeMatrix; <span class="comment">// deccoding matrix for each ambi channel & speaker</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="comment">// cols are channels and rows are speakers</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">float</span> mWOrder[5]; <span class="comment">// weights for each order</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">Speakers</a> mSpeakers;</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="comment">// float * mPositions; // speakers' azimuths + elevations</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// float * mFrame; // an ambisonic channel frame used for</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">// decode(int)</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordtype">void</span> updateChanWeights();</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordtype">void</span> resizeArrays(<span class="keywordtype">int</span> numChannels, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_decode.html#a5b9cb4388aaab83cb1e0ac53e7150263">numSpeakers</a>);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordtype">float</span> <a class="code" href="classal_1_1_ambi_decode.html#ae620992c6ec2ca8c14ca524fdd8ff104">decode</a>(<span class="keywordtype">float</span> *encFrame, <span class="keywordtype">int</span> encNumChannels,</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordtype">int</span> speakerNum); <span class="comment">// is this useful?</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keyword">static</span> <span class="keywordtype">float</span> flavorWeights[4][5][5];</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> };</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  </div>
<div class="line"><a name="l00260"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html"> 260</a></span> <span class="keyword">class </span><a class="code" href="classal_1_1_ambi_encode.html">AmbiEncode</a> : <span class="keyword">public</span> <a class="code" href="classal_1_1_ambi_base.html">AmbiBase</a> {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00264"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#a539171f1a71e5794c0e30f68fcc3d9be"> 264</a></span>  <a class="code" href="classal_1_1_ambi_encode.html#a539171f1a71e5794c0e30f68fcc3d9be">AmbiEncode</a>(<span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>) : <a class="code" href="classal_1_1_ambi_base.html">AmbiBase</a>(<a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>, <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>) {}</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// /// Encode input sample and set decoder frame.</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// void encode (const AmbiDecode &dec, float input);</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// /// Encode input sample and add to decoder frame.</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">// void encodeAdd(const AmbiDecode &dec, float input);</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keywordtype">int</span> numFrames, <span class="keywordtype">int</span> timeIndex,</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordtype">float</span> timeSample) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  </div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  </div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keyword">const</span> <span class="keywordtype">float</span> *input, <span class="keywordtype">int</span> numFrames);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keyword">template</span> <<span class="keyword">class</span> XYZ></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keyword">const</span> XYZ *dir, <span class="keyword">const</span> <span class="keywordtype">float</span> *input,</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordtype">int</span> numFrames);</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">direction</a>(<span class="keywordtype">float</span> az, <span class="keywordtype">float</span> el);</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">direction</a>(<a class="code" href="classal_1_1_vec.html">Vec3f</a> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">direction</a>);</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  </div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">direction</a>(<span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y, <span class="keywordtype">float</span> z);</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  </div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordtype">void</span> print(std::ostream &stream);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> };</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  </div>
<div class="line"><a name="l00316"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html"> 316</a></span> <span class="keyword">class </span><a class="code" href="classal_1_1_ambisonics_spatializer.html">AmbisonicsSpatializer</a> : <span class="keyword">public</span> <a class="code" href="classal_1_1_spatializer.html">Spatializer</a> {</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <a class="code" href="classal_1_1_ambisonics_spatializer.html">AmbisonicsSpatializer</a>();</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <a class="code" href="classal_1_1_ambisonics_spatializer.html">AmbisonicsSpatializer</a>(<a class="code" href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">Speakers</a> &sl, <span class="keywordtype">int</span> dim = 2, <span class="keywordtype">int</span> order = 1,</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordtype">int</span> flavor = 1);</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  </div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordtype">void</span> zeroAmbi();</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  </div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordtype">void</span> configure(<span class="keywordtype">int</span> dim, <span class="keywordtype">int</span> order, <span class="keywordtype">int</span> flavor);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  </div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordtype">float</span> *ambiChans(<span class="keywordtype">unsigned</span> channel = 0);</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  </div>
<div class="line"><a name="l00328"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#a74f4a603eff35013c27615066921234d"> 328</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#a74f4a603eff35013c27615066921234d">compile</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  </div>
<div class="line"><a name="l00330"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#a898e0c0b0a87b993e2692147fcec2f18"> 330</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#a898e0c0b0a87b993e2692147fcec2f18">numFrames</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> v) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  </div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">void</span> <a class="code" href="classal_1_1_spatializer.html#aa7d2688b85d9bbf1cc1246d27cc2d8cc">numSpeakers</a>(<span class="keywordtype">int</span> num);</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  </div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordtype">void</span> setSpeakerLayout(<span class="keyword">const</span> <a class="code" href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">Speakers</a> &speakers);</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  </div>
<div class="line"><a name="l00336"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#afb8650090819463d4d67a85572da3eb1"> 336</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#afb8650090819463d4d67a85572da3eb1">prepare</a>(<a class="code" href="classal_1_1_audio_i_o_data.html">AudioIOData</a> &io) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  </div>
<div class="line"><a name="l00338"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#af9a3333b5831559d6253f4c402b48da1"> 338</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#af9a3333b5831559d6253f4c402b48da1">renderBuffer</a>(<a class="code" href="classal_1_1_audio_i_o_data.html">AudioIOData</a> &io, <span class="keyword">const</span> <a class="code" href="classal_1_1_pose.html">Pose</a> &listeningPose,</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> *samples,</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &<a class="code" href="classal_1_1_ambisonics_spatializer.html#a898e0c0b0a87b993e2692147fcec2f18">numFrames</a>) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  </div>
<div class="line"><a name="l00342"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#a5b4d4d51be01089ce08e4208e277f76e"> 342</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#a5b4d4d51be01089ce08e4208e277f76e">renderSample</a>(<a class="code" href="classal_1_1_audio_i_o_data.html">AudioIOData</a> &io, <span class="keyword">const</span> <a class="code" href="classal_1_1_pose.html">Pose</a> &listeningPose,</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> &sample,</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &frameIndex) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  </div>
<div class="line"><a name="l00346"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#aae2a1551ec500b66db0999582dfdc9b9"> 346</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#aae2a1551ec500b66db0999582dfdc9b9">finalize</a>(<a class="code" href="classal_1_1_audio_i_o_data.html">AudioIOData</a> &io) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  </div>
<div class="line"><a name="l00348"></a><span class="lineno"><a class="line" href="classal_1_1_ambisonics_spatializer.html#a40a6fee2d0c916812dd9c16ce00ff9e6"> 348</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambisonics_spatializer.html#a40a6fee2d0c916812dd9c16ce00ff9e6">print</a>(std::ostream &stream = std::cout) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  </div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <a class="code" href="classal_1_1_ambi_decode.html">AmbiDecode</a> mDecoder;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <a class="code" href="classal_1_1_ambi_encode.html">AmbiEncode</a> mEncoder;</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  std::vector<float> mAmbiDomainChannels;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// Listener* mListener;</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> };</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  </div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment">// Implementation ______________________________________________________________</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment">// AmbiBase</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> AmbiBase::orderToChannels(<span class="keywordtype">int</span> dim, <span class="keywordtype">int</span> order) {</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordtype">int</span> chans = orderToChannelsH(<a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>);</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">return</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a> == 2 ? chans : chans + orderToChannelsV(<a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>);</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  </div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> AmbiBase::orderToChannelsH(<span class="keywordtype">int</span> orderH) { <span class="keywordflow">return</span> (orderH << 1) + 1; }</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> AmbiBase::orderToChannelsV(<span class="keywordtype">int</span> orderV) { <span class="keywordflow">return</span> orderV * orderV; }</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> AmbiBase::channelsToOrder(<span class="keywordtype">int</span> channels) {</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a> = -1;</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">switch</span> (<a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>) {</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">case</span> 4:</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a> = 1;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">case</span> 9:</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a> = 2;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordflow">case</span> 16:</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a> = 3;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a> = -1;</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">return</span> <a class="code" href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">order</a>;</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> }</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> AmbiBase::channelsToDimensions(<span class="keywordtype">int</span> channels) {</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordtype">int</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a> = 3;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">switch</span> (<a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>) {</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a> = 2;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">case</span> 4:</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">case</span> 9:</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">case</span> 16:</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a> = 3;</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a> = -1;</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  }</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keywordflow">return</span> <a class="code" href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">dim</a>;</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> }</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keywordtype">void</span> AmbiBase::resize(T *&a, <span class="keywordtype">int</span> n) {</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keyword">delete</span>[] a;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  a = <span class="keyword">new</span> T[n];</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  memset(a, 0, n * <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> }</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="comment">// AmbiDecode</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  </div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="keyword">inline</span> <span class="keywordtype">float</span> <a class="code" href="classal_1_1_ambi_decode.html#ae620992c6ec2ca8c14ca524fdd8ff104">AmbiDecode::decode</a>(<span class="keywordtype">float</span> *encFrame, <span class="keywordtype">int</span> encNumChannels,</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordtype">int</span> speakerNum) {</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordtype">float</span> smp = 0;</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordtype">float</span> *dec = mDecodeMatrix + speakerNum * <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>();</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordtype">float</span> *wc = mWeights;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < encNumChannels; ++i)</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  smp += *dec++ * *wc++ * *encFrame++;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">return</span> smp;</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> }</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  </div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="comment">// inline float AmbiDecode::decode(int speakerNum){</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="comment">// return decode(mFrame, channels(), speakerNum);</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="comment">//}</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment">// inline float * AmbiDecode::azimuths(){ return mPositions; }</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="comment">// inline float * AmbiDecode::elevations(){ return mPositions + mNumSpeakers; }</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="comment">// inline float * AmbiDecode::frame() const { return mFrame; }</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="comment">// AmbiEncode</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="comment">// inline void AmbiEncode::encode(const AmbiDecode &dec, float input){</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment">// for(int c=0; c<dec.channels(); ++c) dec.frame()[c] = weights()[c] *</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="comment">// input;</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="comment">//}</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="comment">//</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="comment">// inline void AmbiEncode::encodeAdd(const AmbiDecode &dec, float input){</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="comment">// for(int c=0; c<dec.channels(); ++c) dec.frame()[c] += weights()[c] *</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment">// input;</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment">//}</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div>
<div class="line"><a name="l00441"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1"> 441</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">AmbiEncode::direction</a>(<span class="keywordtype">float</span> az, <span class="keywordtype">float</span> el) {</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <a class="code" href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c">AmbiBase::encodeWeightsFuMa</a>(mWeights, mDim, mOrder, az, el);</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> }</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  </div>
<div class="line"><a name="l00445"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#a92de53a4d0a724bbfe21d198244cf25e"> 445</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">AmbiEncode::direction</a>(<a class="code" href="classal_1_1_vec.html">Vec3f</a> vector) {</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <a class="code" href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c">AmbiBase::encodeWeightsFuMa</a>(mWeights, mDim, mOrder, vector.x, vector.y,</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  vector.z);</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> }</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  </div>
<div class="line"><a name="l00450"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#a4a025c81fe8d221fcbfefff6dd76f30b"> 450</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">AmbiEncode::direction</a>(<span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y, <span class="keywordtype">float</span> z) {</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <a class="code" href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c">AmbiBase::encodeWeightsFuMa</a>(mWeights, mDim, mOrder, x, y, z);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> }</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708"> 454</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">AmbiEncode::encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keywordtype">int</span> numFrames, <span class="keywordtype">int</span> timeIndex,</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keywordtype">float</span> timeSample)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="comment">// "Iterate" through spherical harmonics using Duff's device.</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment">// This requires only a simple jump per time sample.</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="preprocessor">#define CS(chanindex) \</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="preprocessor"> case chanindex: \</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> <span class="preprocessor"> ambiChans[chanindex * numFrames + timeIndex] += \</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="preprocessor"> weights()[chanindex] * timeSample;</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordtype">int</span> ch = <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>() - 1;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">switch</span> (ch) {</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  CS(15)</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  CS(14)</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  CS(13)</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  CS(12)</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  CS(11) CS(10) CS(9) CS(8) CS(7) CS(6) CS(5) CS(4) CS(3) CS(2) CS(1)</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  CS(0) <span class="keywordflow">default</span>:;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  }</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> <span class="preprocessor">#undef CS</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> }</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  </div>
<div class="line"><a name="l00474"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#a810f156a6523bba181caa540911ce003"> 474</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">AmbiEncode::encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keyword">const</span> <span class="keywordtype">float</span> *input,</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keywordtype">int</span> numFrames) {</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordtype">float</span> *pAmbi = ambiChans; <span class="comment">// non-interleaved ambi buffers, we can use fast</span></div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">// pointer arithmetic</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  </div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < <a class="code" href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">channels</a>(); ++c) {</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> *pInput = input;</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keywordtype">float</span> weight = <a class="code" href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6">weights</a>()[c];</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < numFrames; ++i) {</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  *pAmbi++ += weight * *pInput++;</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  }</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  }</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> }</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  </div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="keyword">template</span> <<span class="keyword">class</span> XYZ></div>
<div class="line"><a name="l00489"></a><span class="lineno"><a class="line" href="classal_1_1_ambi_encode.html#af490eb436d8bbe0f97b60ce5d4d342d6"> 489</a></span> <span class="keywordtype">void</span> <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">AmbiEncode::encode</a>(<span class="keywordtype">float</span> *ambiChans, <span class="keyword">const</span> XYZ *dir, <span class="keyword">const</span> <span class="keywordtype">float</span> *input,</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordtype">int</span> numFrames) {</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">// TODO: how can we efficiently encode a moving source?</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  </div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// Changing the position recomputes ALL the spherical harmonic weights.</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">// Ideally we only want to change the position for each time sample.</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="comment">// However, for our loops to be most efficient, we want the inner loop</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">// to process over time since it will have around 64-512 iterations</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// while the spatial loop will have at most 16 iterations.</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  </div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">/* outer-space, inner-time</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="comment"> for(int c=0; c<channels(); ++c){</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="comment"> float * ambi = ambiChans[c];</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="comment"> //T</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> <span class="comment"> for(int i=0; i<numFrames; ++i){</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> <span class="comment"> position(pos[i][0], pos[i][1], pos[i][2]);</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="comment"> ambi[i] += weights()[c] * input[i];</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="comment"> }*/</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  </div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// outer-time, inner-space</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < numFrames; ++i) {</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <a class="code" href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">direction</a>(dir[i][0], dir[i][1], dir[i][2]);</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <a class="code" href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">encode</a>(ambiChans, numFrames, i, input[i]);</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">/*for(int c=0; c<channels(); ++c){</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="comment"> ambiChans[c][i] += weights()[c] * input[i];</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="comment"> }*/</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  }</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> }</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  </div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="keyword">inline</span> <span class="keywordtype">float</span> *AmbisonicsSpatializer::ambiChans(<span class="keywordtype">unsigned</span> channel) {</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  assert(mNumFrames != 0 && <span class="stringliteral">"number of frames not set."</span>);</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">return</span> &mAmbiDomainChannels[channel * mNumFrames];</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> }</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span> } <span class="comment">// namespace al</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html"><div class="ttname"><a href="classal_1_1_ambi_base.html">al::AmbiBase</a></div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00114">al_Ambisonics.hpp:114</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a097913d9f90a224955fc584ad53fc240"><div class="ttname"><a href="classal_1_1_ambi_base.html#a097913d9f90a224955fc584ad53fc240">al::AmbiBase::encodeWeightsFuMa</a></div><div class="ttdeci">static void encodeWeightsFuMa(float *ws, int dim, int order, float x, float y, float z)</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a0f2e990b76fb064986be93df330f6d2e"><div class="ttname"><a href="classal_1_1_ambi_base.html#a0f2e990b76fb064986be93df330f6d2e">al::AmbiBase::dim</a></div><div class="ttdeci">void dim(int dim)</div><div class="ttdoc">Set the number of dimensions.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a28077d59aaefc72cf5709509239f9b8c"><div class="ttname"><a href="classal_1_1_ambi_base.html#a28077d59aaefc72cf5709509239f9b8c">al::AmbiBase::encodeWeightsFuMa</a></div><div class="ttdeci">static void encodeWeightsFuMa(float *weights, int dim, int order, float azimuth, float elevation)</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a3c3423bd26d82a4f6e618b9151537760"><div class="ttname"><a href="classal_1_1_ambi_base.html#a3c3423bd26d82a4f6e618b9151537760">al::AmbiBase::encodeWeightsFuMa16</a></div><div class="ttdeci">static void encodeWeightsFuMa16(float *ws, float x, float y, float z)</div><div class="ttdoc">(x,y,z unit vector in the listener's coordinate frame)</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a6b82ca53522c3a6f41d18e69e5569145"><div class="ttname"><a href="classal_1_1_ambi_base.html#a6b82ca53522c3a6f41d18e69e5569145">al::AmbiBase::order</a></div><div class="ttdeci">void order(int order)</div><div class="ttdoc">Set the order.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_a98394a6ebe3520ef5bc179f55eb8f978"><div class="ttname"><a href="classal_1_1_ambi_base.html#a98394a6ebe3520ef5bc179f55eb8f978">al::AmbiBase::channels</a></div><div class="ttdeci">int channels() const</div><div class="ttdoc">Returns total number of Ambisonic domain (B-format) channels.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00132">al_Ambisonics.hpp:132</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_ac0c6a652032d3177f10b9a42631ada31"><div class="ttname"><a href="classal_1_1_ambi_base.html#ac0c6a652032d3177f10b9a42631ada31">al::AmbiBase::AmbiBase</a></div><div class="ttdeci">AmbiBase(int dim, int order)</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_ac3cbcaca7b5b10d7a82ada43442983e6"><div class="ttname"><a href="classal_1_1_ambi_base.html#ac3cbcaca7b5b10d7a82ada43442983e6">al::AmbiBase::weights</a></div><div class="ttdeci">const float * weights() const</div><div class="ttdoc">Get Ambisonic channel weights.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00129">al_Ambisonics.hpp:129</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_acac4f3f1f0f46246e4920ee8ccbfd492"><div class="ttname"><a href="classal_1_1_ambi_base.html#acac4f3f1f0f46246e4920ee8ccbfd492">al::AmbiBase::dim</a></div><div class="ttdeci">int dim() const</div><div class="ttdoc">Get number dimensions.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00123">al_Ambisonics.hpp:123</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_adfd75225c6530a5f96ba9124956db489"><div class="ttname"><a href="classal_1_1_ambi_base.html#adfd75225c6530a5f96ba9124956db489">al::AmbiBase::encodeWeightsFuMa16</a></div><div class="ttdeci">static void encodeWeightsFuMa16(float *weights, float azimuth, float elevation)</div><div class="ttdoc">Brute force 3rd order. Weights must be of size 16.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_af1c3d2994df58b89e6dcb07998f0c428"><div class="ttname"><a href="classal_1_1_ambi_base.html#af1c3d2994df58b89e6dcb07998f0c428">al::AmbiBase::onChannelsChange</a></div><div class="ttdeci">virtual void onChannelsChange()</div><div class="ttdoc">Called whenever the number of Ambisonic channels changes.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00141">al_Ambisonics.hpp:141</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_base_html_afaa85d09cdd80ab5dddfe315934ceb59"><div class="ttname"><a href="classal_1_1_ambi_base.html#afaa85d09cdd80ab5dddfe315934ceb59">al::AmbiBase::order</a></div><div class="ttdeci">int order() const</div><div class="ttdoc">Get order.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00126">al_Ambisonics.hpp:126</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html"><div class="ttname"><a href="classal_1_1_ambi_decode.html">al::AmbiDecode</a></div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00180">al_Ambisonics.hpp:180</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a3f4490413aa99bae11a7c0d186073efe"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a3f4490413aa99bae11a7c0d186073efe">al::AmbiDecode::numSpeakers</a></div><div class="ttdeci">void numSpeakers(int num)</div><div class="ttdoc">Set number of speakers. Positions are zeroed upon resize.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a4e9aae8fb5a863f6d3478c1fb33f68d3"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a4e9aae8fb5a863f6d3478c1fb33f68d3">al::AmbiDecode::AmbiDecode</a></div><div class="ttdeci">AmbiDecode(int dim, int order, int numSpeakers, int flavor=1)</div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a5b9cb4388aaab83cb1e0ac53e7150263"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a5b9cb4388aaab83cb1e0ac53e7150263">al::AmbiDecode::numSpeakers</a></div><div class="ttdeci">int numSpeakers() const</div><div class="ttdoc">Returns number of speakers.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00205">al_Ambisonics.hpp:205</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a68d58bc98981242eb102f9fb95ab89b6"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a68d58bc98981242eb102f9fb95ab89b6">al::AmbiDecode::flavor</a></div><div class="ttdeci">int flavor() const</div><div class="ttdoc">Returns decode flavor.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00202">al_Ambisonics.hpp:202</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a74a06b8434efd5417bc3a9de8019f350"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a74a06b8434efd5417bc3a9de8019f350">al::AmbiDecode::speaker</a></div><div class="ttdeci">Speaker & speaker(int num)</div><div class="ttdoc">Get speaker.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00233">al_Ambisonics.hpp:233</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_a93836520a8b5f44f507bddadcf0818e2"><div class="ttname"><a href="classal_1_1_ambi_decode.html#a93836520a8b5f44f507bddadcf0818e2">al::AmbiDecode::onChannelsChange</a></div><div class="ttdeci">virtual void onChannelsChange()</div><div class="ttdoc">Called whenever the number of Ambisonic channels changes.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_aa4f163784d147e0a410b8b98d3188f03"><div class="ttname"><a href="classal_1_1_ambi_decode.html#aa4f163784d147e0a410b8b98d3188f03">al::AmbiDecode::flavor</a></div><div class="ttdeci">void flavor(int type)</div><div class="ttdoc">Set decoding algorithm.</div></div>
<div class="ttc" id="aclassal_1_1_ambi_decode_html_ae620992c6ec2ca8c14ca524fdd8ff104"><div class="ttname"><a href="classal_1_1_ambi_decode.html#ae620992c6ec2ca8c14ca524fdd8ff104">al::AmbiDecode::decode</a></div><div class="ttdeci">virtual void decode(float *dec, const float *enc, int numDecFrames) const</div></div>
<div class="ttc" id="aclassal_1_1_ambi_encode_html"><div class="ttname"><a href="classal_1_1_ambi_encode.html">al::AmbiEncode</a></div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00260">al_Ambisonics.hpp:260</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_encode_html_a539171f1a71e5794c0e30f68fcc3d9be"><div class="ttname"><a href="classal_1_1_ambi_encode.html#a539171f1a71e5794c0e30f68fcc3d9be">al::AmbiEncode::AmbiEncode</a></div><div class="ttdeci">AmbiEncode(int dim, int order)</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00264">al_Ambisonics.hpp:264</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_encode_html_a9ee9bb50cfa5f2e09eb9827fb4b31708"><div class="ttname"><a href="classal_1_1_ambi_encode.html#a9ee9bb50cfa5f2e09eb9827fb4b31708">al::AmbiEncode::encode</a></div><div class="ttdeci">void encode(float *ambiChans, int numFrames, int timeIndex, float timeSample) const</div><div class="ttdoc">Encode a single time sample.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00454">al_Ambisonics.hpp:454</a></div></div>
<div class="ttc" id="aclassal_1_1_ambi_encode_html_ab67d21d078af32bcd6cf29ba5d46bcc1"><div class="ttname"><a href="classal_1_1_ambi_encode.html#ab67d21d078af32bcd6cf29ba5d46bcc1">al::AmbiEncode::direction</a></div><div class="ttdeci">void direction(float az, float el)</div><div class="ttdoc">Set spherical direction of source to be encoded.</div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00441">al_Ambisonics.hpp:441</a></div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html">al::AmbisonicsSpatializer</a></div><div class="ttdef"><b>Definition:</b> <a href="al___ambisonics_8hpp_source.html#l00316">al_Ambisonics.hpp:316</a></div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_a40a6fee2d0c916812dd9c16ce00ff9e6"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#a40a6fee2d0c916812dd9c16ce00ff9e6">al::AmbisonicsSpatializer::print</a></div><div class="ttdeci">virtual void print(std::ostream &stream=std::cout) override</div><div class="ttdoc">Print out information about spatializer.</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_a5b4d4d51be01089ce08e4208e277f76e"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#a5b4d4d51be01089ce08e4208e277f76e">al::AmbisonicsSpatializer::renderSample</a></div><div class="ttdeci">virtual void renderSample(AudioIOData &io, const Pose &listeningPose, const float &sample, const unsigned int &frameIndex) override</div><div class="ttdoc">Render audio sample in position.</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_a74f4a603eff35013c27615066921234d"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#a74f4a603eff35013c27615066921234d">al::AmbisonicsSpatializer::compile</a></div><div class="ttdeci">virtual void compile() override</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_a898e0c0b0a87b993e2692147fcec2f18"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#a898e0c0b0a87b993e2692147fcec2f18">al::AmbisonicsSpatializer::numFrames</a></div><div class="ttdeci">virtual void numFrames(unsigned int v) override</div><div class="ttdoc">Set number of frames.</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_aae2a1551ec500b66db0999582dfdc9b9"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#aae2a1551ec500b66db0999582dfdc9b9">al::AmbisonicsSpatializer::finalize</a></div><div class="ttdeci">virtual void finalize(AudioIOData &io) override</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_af9a3333b5831559d6253f4c402b48da1"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#af9a3333b5831559d6253f4c402b48da1">al::AmbisonicsSpatializer::renderBuffer</a></div><div class="ttdeci">virtual void renderBuffer(AudioIOData &io, const Pose &listeningPose, const float *samples, const unsigned int &numFrames) override</div><div class="ttdoc">Render audio buffer in position.</div></div>
<div class="ttc" id="aclassal_1_1_ambisonics_spatializer_html_afb8650090819463d4d67a85572da3eb1"><div class="ttname"><a href="classal_1_1_ambisonics_spatializer.html#afb8650090819463d4d67a85572da3eb1">al::AmbisonicsSpatializer::prepare</a></div><div class="ttdeci">virtual void prepare(AudioIOData &io) override</div></div>
<div class="ttc" id="aclassal_1_1_audio_i_o_data_html"><div class="ttname"><a href="classal_1_1_audio_i_o_data.html">al::AudioIOData</a></div><div class="ttdef"><b>Definition:</b> <a href="al___audio_i_o_data_8hpp_source.html#l00174">al_AudioIOData.hpp:174</a></div></div>
<div class="ttc" id="aclassal_1_1_pose_html"><div class="ttname"><a href="classal_1_1_pose.html">al::Pose</a></div><div class="ttdoc">A local coordinate frame.</div><div class="ttdef"><b>Definition:</b> <a href="al___pose_8hpp_source.html#l00063">al_Pose.hpp:63</a></div></div>
<div class="ttc" id="aclassal_1_1_spatializer_html"><div class="ttname"><a href="classal_1_1_spatializer.html">al::Spatializer</a></div><div class="ttdef"><b>Definition:</b> <a href="al___spatializer_8hpp_source.html#l00056">al_Spatializer.hpp:56</a></div></div>
<div class="ttc" id="aclassal_1_1_spatializer_html_aa7d2688b85d9bbf1cc1246d27cc2d8cc"><div class="ttname"><a href="classal_1_1_spatializer.html#aa7d2688b85d9bbf1cc1246d27cc2d8cc">al::Spatializer::numSpeakers</a></div><div class="ttdeci">int numSpeakers() const</div><div class="ttdoc">Get number of speakers.</div><div class="ttdef"><b>Definition:</b> <a href="al___spatializer_8hpp_source.html#l00090">al_Spatializer.hpp:90</a></div></div>
<div class="ttc" id="aclassal_1_1_speaker_html"><div class="ttname"><a href="classal_1_1_speaker.html">al::Speaker</a></div><div class="ttdef"><b>Definition:</b> <a href="al___speaker_8hpp_source.html#l00058">al_Speaker.hpp:58</a></div></div>
<div class="ttc" id="aclassal_1_1_vec_html"><div class="ttname"><a href="classal_1_1_vec.html">al::Vec< 3, float ></a></div></div>
<div class="ttc" id="anamespaceal_html"><div class="ttname"><a href="namespaceal.html">al</a></div><div class="ttdef"><b>Definition:</b> <a href="al___app_8hpp_source.html#l00023">al_App.hpp:23</a></div></div>
<div class="ttc" id="anamespaceal_html_a2b52b41b41b11fd1aeb45bf63e066929"><div class="ttname"><a href="namespaceal.html#a2b52b41b41b11fd1aeb45bf63e066929">al::Speakers</a></div><div class="ttdeci">std::vector< Speaker > Speakers</div><div class="ttdoc">A set of speakers.</div><div class="ttdef"><b>Definition:</b> <a href="al___speaker_8hpp_source.html#l00101">al_Speaker.hpp:101</a></div></div>
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