File: midi-test.html

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<!DOCTYPE html>
<html>
  <head>
        <title>debug @csound/browser</title>
    </head>
    <body>
        <script type="module">
         const url = "/libcsound.dev.mjs";

         const testMidi = `
<CsoundSynthesizer>
<CsOptions>
-odac -Ma
</CsOptions>
<CsInstruments>
sr = 44100
ksmps = 32
nchnls = 1
0dbfs = 1

giSine  ftgen  0,0,2^10,10,1  ; a sine wave

  instr 1
; -- pitch bend --
kPchBnd  pchbend  0,4               ;read in pitch bend (range -2 to 2)
kTrig1   changed  kPchBnd           ;if 'kPchBnd' changes generate a trigger
 if kTrig1=1 then
printks "Pitch Bend:%f%n",0,kPchBnd ;print kPchBnd to console when it changes
 endif

; -- aftertouch --
kAfttch  aftouch 0,0.9              ;read in aftertouch (range 0 to 0.9)
kTrig2   changed kAfttch            ;if 'kAfttch' changes generate a trigger
 if kTrig2=1 then
printks "Aftertouch:%d%n",0,kAfttch ;print kAfttch to console when it changes
 endif

; -- create a sound --
iNum     notnum                     ;read in MIDI note number
; MIDI note number + pitch bend are converted to cycles per seconds
aSig     poscil   0.1,cpsmidinn(iNum+kPchBnd),giSine

aSig *= expsegr(0.001, .02, 1, .5, 0.001)
         out      aSig              ;audio to output
  endin

</CsInstruments>
<CsScore>
</CsScore>
<CsoundSynthesizer>
;example by Iain McCurdy
         `;

         const runIt = async () => {
             const { Csound } = await import(url);
             const csoundObj = await Csound({
                 useWorker: false,
                 useSPN: true,
                 useSAB: false
             });

             const compileReturn = await csoundObj.compileCsdText(testMidi);
             const startReturn = await csoundObj.start();

         };

         const triggerEvent = "ontouchstart" in document.documentElement ? "touchend" : "click";
         document.querySelector("#all_tests").addEventListener(triggerEvent, async function () {
             await runIt();
         });
        </script>
        <button id="all_tests">Run All Tests</button>
    </body>
</html>