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Extra "ports" of juce-based plugins using the distrho build system
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DISTRHO-Ports-Extra/ports/protoplug/ProtoplugFiles/doc/examples/sine-organ.lua.html

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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

  2.    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

  3. <html>

  4. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>

  5. <head>

  6.     <title>protoplug: Example sine-organ.lua</title>

  7.     <link rel="stylesheet" href="../ldoc.css" type="text/css" />

  8. </head>

  9. <body>

  10. 

  11. <div id="container">

  12. 

  13. <div id="product">

  14. 	<div id="product_logo"></div>

  15. 	<div id="product_name"><big><b></b></big></div>

  16. 	<div id="product_description"></div>

  17. </div> <!-- id="product" -->

  18. 

  19. 

  20. <div id="main">

  21. 

  22. 

  23. <!-- Menu -->

  24. 

  25. <div id="navigation">

  26. <a href="http://osar.fr">

  27. <div class=osarlogo> </div>

  28. </a>

  29. <br/>

  30. <a href="http://osar.fr/protoplug">

  31. <h1>protoplug</h1>

  32. </a>

  33. 	<span class="proto_subtitle">Lua API reference</span>

  34. 

  35. <ul>

  36.   <li><a href="../index.html">Index</a></li>

  37. </ul>

  38. 

  39. 

  40. 

  41. <h2>Examples</h2>

  42. <ul class="$(kind=='Topics' and '' or 'nowrap'">

  43.   <li><a href="../examples/classic-filter.lua.html">classic-filter.lua</a></li>

  44.   <li><strong>sine-organ.lua</strong></li>

  45.   <li><a href="../examples/midi-chordify.lua.html">midi-chordify.lua</a></li>

  46.   <li><a href="../examples/sinemouse-demo.lua.html">sinemouse-demo.lua</a></li>

  47.   <li><a href="../examples/soundfile-test.lua.html">soundfile-test.lua</a></li>

  48. </ul>

  49. <h2>Modules</h2>

  50. <ul class="$(kind=='Topics' and '' or 'nowrap'">

  51.   <li><a href="../modules/plugin.html">plugin</a></li>

  52.   <li><a href="../modules/script.html">script</a></li>

  53.   <li><a href="../modules/midi.html">midi</a></li>

  54.   <li><a href="../modules/gui.html">gui</a></li>

  55.   <li><a href="../modules/polyGen.html">polyGen</a></li>

  56.   <li><a href="../modules/stereoFx.html">stereoFx</a></li>

  57. </ul>

  58. <h2>Classes</h2>

  59. <ul class="$(kind=='Topics' and '' or 'nowrap'">

  60.   <li><a href="../classes/juce.AffineTransform.html">juce.AffineTransform</a></li>

  61.   <li><a href="../classes/juce.AudioFormatReader.html">juce.AudioFormatReader</a></li>

  62.   <li><a href="../classes/juce.Colour.html">juce.Colour</a></li>

  63.   <li><a href="../classes/juce.ColourGradient.html">juce.ColourGradient</a></li>

  64.   <li><a href="../classes/juce.Component.html">juce.Component</a></li>

  65.   <li><a href="../classes/juce.FillType.html">juce.FillType</a></li>

  66.   <li><a href="../classes/juce.Font.html">juce.Font</a></li>

  67.   <li><a href="../classes/juce.Graphics.html">juce.Graphics</a></li>

  68.   <li><a href="../classes/juce.Image.html">juce.Image</a></li>

  69.   <li><a href="../classes/juce.Justification.html">juce.Justification</a></li>

  70.   <li><a href="../classes/juce.LagrangeInterpolator.html">juce.LagrangeInterpolator</a></li>

  71.   <li><a href="../classes/juce.Line.html">juce.Line</a></li>

  72.   <li><a href="../classes/juce.Path.html">juce.Path</a></li>

  73.   <li><a href="../classes/juce.Point.html">juce.Point</a></li>

  74.   <li><a href="../classes/juce.RectanglePlacement.html">juce.RectanglePlacement</a></li>

  75.   <li><a href="../classes/juce.Rectangle_float.html">juce.Rectangle_float</a></li>

  76.   <li><a href="../classes/juce.Rectangle_int.html">juce.Rectangle_int</a></li>

  77. </ul>

  78. 

  79. </div>

  80. 

  81. <div id="content">

  82. 

  83.     <pre>

  84. <span class="comment">--[[

  85. name: sine organ

  86. description: A simple organ-like sinewave VST/AU.

  87. author: osar.fr

  88. --]]</span>

  89. 

  90. <span class="global">require</span> <span class="string">"include/protoplug"</span>

  91. 

  92. <span class="keyword">local</span> release = <span class="number">10000</span>

  93. <span class="keyword">local</span> decayRate = <span class="number">1</span>/release

  94. 

  95. polyGen.initTracks(<span class="number">8</span>)

  96. 

  97. <span class="keyword">function</span> polyGen.VTrack:init()

  98. 	<span class="comment">-- create per-track fields here

  99. </span>	self.phase = <span class="number">0</span>

  100. 	self.releasePos = release

  101. <span class="keyword">end</span>

  102. 

  103. <span class="keyword">function</span> polyGen.VTrack:addProcessBlock(samples, smax)

  104. 	<span class="keyword">local</span> amp = <span class="number">1</span>

  105. 	<span class="keyword">for</span> i = <span class="number">0</span>,smax <span class="keyword">do</span>

  106. 		<span class="keyword">if</span> <span class="keyword">not</span> self.noteIsOn <span class="keyword">then</span>

  107. 			<span class="comment">-- release is finished : idle track

  108. </span>			<span class="keyword">if</span> self.releasePos&gt;=release <span class="keyword">then</span> <span class="keyword">break</span> <span class="keyword">end</span>

  109. 			<span class="comment">-- release is under way

  110. </span>			amp = <span class="number">1</span>-self.releasePos*decayRate

  111. 			self.releasePos = self.releasePos+<span class="number">1</span>

  112. 		<span class="keyword">end</span>

  113. 		self.phase = self.phase + (self.noteFreq*<span class="global">math</span>.pi*<span class="number">2</span>)

  114. 		<span class="comment">-- math.sin is slow but once per sample is no tragedy

  115. </span>		<span class="keyword">local</span> trackSample = <span class="global">math</span>.sin(self.phase)*amp*<span class="number">0.3</span>

  116. 		samples[<span class="number">0</span>][i] = samples[<span class="number">0</span>][i] + trackSample <span class="comment">-- left

  117. </span>		samples[<span class="number">1</span>][i] = samples[<span class="number">1</span>][i] + trackSample <span class="comment">-- right

  118. </span>	<span class="keyword">end</span>

  119. <span class="keyword">end</span>

  120. 

  121. <span class="keyword">function</span> polyGen.VTrack:noteOff(note, ev)

  122. 	self.releasePos = <span class="number">0</span>

  123. <span class="keyword">end</span>

  124. 

  125. <span class="keyword">function</span> polyGen.VTrack:noteOn(note, vel, ev)

  126. 	<span class="comment">-- start the sinewave at 0 for a clickless attack

  127. </span>	self.phase = <span class="number">0</span>

  128. <span class="keyword">end</span></pre>

  129. 

  130. 

  131. </div> <!-- id="content" -->

  132. </div> <!-- id="main" -->

  133. <div id="about">

  134. <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.2</a></i>

  135. </div> <!-- id="about" -->

  136. </div> <!-- id="container" -->

  137. </body>

  138. </html>