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overdrivepreview.js
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overdrivepreview.js
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var newsource;
function overdrivepreview1(){
clearInterval(intervalid);
clearInterval(intervalid12);
clearInterval(videointerval)
var start = parseFloat(document.getElementById("start").value);
var end = parseFloat(document.getElementById("end").value);
var outputgain = parseFloat(document.getElementById("outputgain").value)
var drive = parseFloat(document.getElementById("drive").value)
var curveamount = parseFloat(document.getElementById("curveamount").value);
var algorithmindex = parseFloat(document.getElementById("algorithmindex").value);
time = parseInt(start);
var final = end - start;
if (sourcecheck === null){
if(source){
source.stop();
}
if(source1){
source1.stop();
}
}
if (check === null ){
document.getElementById("error").innerHTML = "Please select a file"
}
else if (bufferarray===null){
document.getElementById("error").innerHTML = "No data available"
}
else if (isNaN(start)){
document.getElementById("error").innerHTML = "Starting point is not a number"
}
else if (start >= source.buffer.duration){
document.getElementById("error").innerHTML = "starting point is greater than or equal to source buffer duration"
}
else if (start < 0 )
{
document.getElementById("error").innerHTML = "Starting Point must be greater than 0"
}
else if (start >= end) {
document.getElementById("error").innerHTML = "Starting Point must be less than Ending Point"
}
else if (isNaN(end)){
document.getElementById("error").innerHTML = "Ending Point is not a number"
}
else if ( end > source.buffer.duration ){
document.getElementById("error").innerHTML = "Ending point is greater than duration"
end < 0 }
else if ( end <= start){
document.getElementById("error").innerHTML = "Ending Point is greater than equal to Starting Point"
}
else if ( isNaN(outputgain) || isNaN(drive) || isNaN(curveamount) || isNaN(algorithmindex)){
}
else{
var newbuffer = audiocontext.createBuffer(bufferarray.numberOfChannels, bufferarray.length, bufferarray.sampleRate)
var ab3 = newbuffer.getChannelData(0)
ab3.set(bufferarray.getChannelData(0), 0)
const offlineCtx = new AudioContext();
var tuna = new Tuna(offlineCtx);
var array1 = new Float32Array(end*bufferarray.sampleRate -start*bufferarray.sampleRate)
var array5;
bufferarray.copyFromChannel(array1, 0, start*bufferarray.sampleRate)
var sourcebuffer = offlineCtx.createBuffer(bufferarray.numberOfChannels, array1.length, bufferarray.sampleRate);
var channeldata = sourcebuffer.getChannelData(0)
channeldata.set(array1)
source1 = offlineCtx.createBufferSource();
source1.buffer = sourcebuffer;
var pingPongDelay = new tuna.Overdrive({
outputGain: outputgain, //-42 to 0 in dB
drive: drive, //0 to 1
curveAmount: curveamount, //0 to 1
algorithmIndex: algorithmindex, //0 to 5, selects one of the drive algorithms
bypass: false
});
source1.connect(pingPongDelay)
pingPongDelay.connect(offlineCtx.destination)
source1.start(0)
source1.stop(array1.length/bufferarray.sampleRate)
}}