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<a href="EnvelopeModulator_8cxx.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * UNIVERSITAT POMPEU FABRA</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * (at your option) any later version.</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"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="EnvelopeModulator_8hxx.html">EnvelopeModulator.hxx</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="CLAM__Math_8hxx.html">CLAM_Math.hxx</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span>CLAM {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="code" href="classCLAM_1_1EnvModulatorConfig.html#a94c1c675f7e072da16b079ce7997beb9"> 28</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1EnvModulatorConfig.html#a94c1c675f7e072da16b079ce7997beb9" title="The concrete dynamic type constructor calls DefaultInit().">EnvModulatorConfig::DefaultInit</a>()</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  AddAll();</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  SetSampleRate(44100);</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  SetFrameSize(512);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  SetEnvelopeCompression(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  }</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="code" href="classCLAM_1_1EnvelopeModulator.html#ab8d5f7beeb28d916e6977aedbded1b39"> 38</a></span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#ab8d5f7beeb28d916e6977aedbded1b39">EnvelopeModulator::EnvelopeModulator</a>(<span class="keyword">const</span> <a class="code" href="classCLAM_1_1EnvModulatorConfig.html">EnvModulatorConfig</a>& c)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  : InputEnvelope(<span class="stringliteral">"Input Envelope"</span>,this),</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  InputAudio(<span class="stringliteral">"Input Audio"</span>,this),</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  Output(<span class="stringliteral">"Output Audio"</span>,this)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="code" href="classCLAM_1_1Processing.html#a586222b159a5b27b5bbb830a125fccc0" title="Configuration change method.">Configure</a>(c);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">bool</span> EnvelopeModulator::ConcreteConfigure(<span class="keyword">const</span> <a class="code" href="classCLAM_1_1ProcessingConfig.html" title="This is an abstract class which serves as interface for configuration classes used as processing obje...">ProcessingConfig</a>& c)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classCLAM_1_1Processing.html#afc32b9790688f2875b42e4ab169389c6" title="Helper template to convert a reference to a ProcessingConfig to the concrete ProcessingConfig specifi...">CopyAsConcreteConfig</a>(mConfig, c);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  mDeltaX = 1000.0/((<a class="code" href="namespaceCLAM.html#aba1a20c1581f88d249cfcbcfd8a377c5">TTime</a>)mConfig.GetSampleRate());</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>  mCompress = mConfig.GetEnvelopeCompression();</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>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#a0b03066f1a1d8e80fa2e8de60daeb93a">InputAudio</a>.<a class="code" href="classCLAM_1_1InPort.html#a0471d948db6697cf056e41d66693827b">SetSize</a>(mConfig.GetFrameSize());</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#ac24630e289469548d21ecaa9ded06a2d">Output</a>.<a class="code" href="classCLAM_1_1OutPort.html#a5592a7c1c164f1f082d11c714426d665">SetSize</a>(mConfig.GetFrameSize());</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="namespaceCLAM.html#ab9c6321b061069797fcc173f61e8111a">TData</a> EnvelopeModulator::Compress(<a class="code" href="namespaceCLAM.html#ab9c6321b061069797fcc173f61e8111a">TData</a> x)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (x>=0)</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> 1.0 - exp(-x);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> - (1.0 - exp(x));</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="code" href="classCLAM_1_1EnvelopeModulator.html#aea5191dc7e9d6b75ae0c3aeb0fbf1cde"> 68</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1EnvelopeModulator.html#aea5191dc7e9d6b75ae0c3aeb0fbf1cde" title="Supervised mode execution method (using ports)">EnvelopeModulator::Do</a>()</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">bool</span> res = <a class="code" href="classCLAM_1_1EnvelopeModulator.html#aea5191dc7e9d6b75ae0c3aeb0fbf1cde" title="Supervised mode execution method (using ports)">Do</a>(<a class="code" href="classCLAM_1_1EnvelopeModulator.html#a6ea8e357c83563ecc3a31568d64546d0">InputEnvelope</a>.<a class="code" href="classCLAM_1_1InPort.html#a65b352e2036d41db14bc71e789624f69">GetData</a>(),</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#a0b03066f1a1d8e80fa2e8de60daeb93a">InputAudio</a>.<a class="code" href="classCLAM_1_1InPort.html#a65b352e2036d41db14bc71e789624f69">GetData</a>(),</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#ac24630e289469548d21ecaa9ded06a2d">Output</a>.<a class="code" href="classCLAM_1_1OutPort.html#a32eb875cab4bbac9e02b2885571c49cb">GetData</a>());</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#a6ea8e357c83563ecc3a31568d64546d0">InputEnvelope</a>.<a class="code" href="classCLAM_1_1InPort.html#a3399b6d0c1e3bb2c89b854200d1f7ce7">Consume</a>();</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#a0b03066f1a1d8e80fa2e8de60daeb93a">InputAudio</a>.<a class="code" href="classCLAM_1_1InPort.html#a3399b6d0c1e3bb2c89b854200d1f7ce7">Consume</a>();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classCLAM_1_1EnvelopeModulator.html#ac24630e289469548d21ecaa9ded06a2d">Output</a>.<a class="code" href="classCLAM_1_1OutPort.html#ae7dcc3895d42d4b8fcbb2a8f7000fca6">Produce</a>(); </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="code" href="classCLAM_1_1EnvelopeModulator.html#a6aa7e5dab7d5ee6d6988eaa2d15505e2"> 79</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1EnvelopeModulator.html#aea5191dc7e9d6b75ae0c3aeb0fbf1cde" title="Supervised mode execution method (using ports)">EnvelopeModulator::Do</a>(<span class="keyword">const</span> <a class="code" href="classCLAM_1_1Envelope.html" title="Envelope class.">Envelope</a>& env, <span class="keyword">const</span> <a class="code" href="classCLAM_1_1Audio.html" title="Audio class with the Data Buffer, information about it (SampleRate, BeginTime), and methods to insert...">Audio</a>& inp, <a class="code" href="classCLAM_1_1Audio.html" title="Audio class with the Data Buffer, information about it (SampleRate, BeginTime), and methods to insert...">Audio</a>& out) </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="classCLAM_1_1Array.html">Array<TData></a> &inputArray = inp.GetBuffer();</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="classCLAM_1_1Array.html">Array<TData></a> &outputArray = out.GetBuffer();</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="classCLAM_1_1BPFTmpl.html">BPFTmpl<TTime,TData></a> &amplitudeBpf = env.GetAmplitudeBPF();</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="namespaceCLAM.html#aba1a20c1581f88d249cfcbcfd8a377c5">TTime</a> pos = 0.0;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size = std::min(inp.<a class="code" href="classCLAM_1_1Audio.html#a2daa98010a19ef4f35a94bc3e0deab5f">GetSize</a>(), out.<a class="code" href="classCLAM_1_1Audio.html#a2daa98010a19ef4f35a94bc3e0deab5f">GetSize</a>());</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (mCompress)</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<size;i++) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  outputArray[i]=inputArray[i]*amplitudeBpf.<a class="code" href="classCLAM_1_1BPFTmpl.html#a5fea9388c992610712bf4f006ce65cdd" title="Getting the value of a point from the value of its X component.">GetValue</a>(pos);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  pos += mDeltaX;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<size;i++) {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  outputArray[i]=inputArray[i]*Compress(amplitudeBpf.<a class="code" href="classCLAM_1_1BPFTmpl.html#a5fea9388c992610712bf4f006ce65cdd" title="Getting the value of a point from the value of its X component.">GetValue</a>(pos));</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  pos += mDeltaX;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
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