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fix looping fonts

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This commit is contained in:
Felix Roos 2022-06-20 20:55:20 +02:00
parent 82d6103907
commit d5938a016c
5 changed files with 97 additions and 34 deletions
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13
packages/webaudio/webaudio.mjs
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@ -63,10 +63,9 @@ const getSoundfontKey = (s) => {
const name = nameIndex < 10 ? `00${nameIndex}` : nameIndex < 100 ? `0${nameIndex}` : nameIndex;
if (nameIndex !== -1) {
// TODO: indices of instrumentNames do not seem to match instruments
s = globalThis.soundfontList.instruments.find((instrument) => instrument.startsWith(name));
// console.log('match', nameIndex, s);
return globalThis.soundfontList.instruments.find((instrument) => instrument.startsWith(name));
}
return globalThis.soundfontList?.instruments?.[nameIndex];
return;
};
const getSampleBufferSource = async (s, n) => {
@ -169,15 +168,17 @@ Pattern.prototype.out = function () {
console.warn('no buffer source');
return;
}
// bufferSource.playbackRate.value = Math.abs(speed) * playbackRate;
bufferSource.playbackRate.value = Math.abs(speed) * bufferSource.playbackRate.value;
// TODO: nudge, unit, cut, loop
let duration = soundfont ? hap.duration : bufferSource.buffer.duration;
// let duration = bufferSource.buffer.duration;
const offset = begin * duration;
duration = ((end - begin) * duration) / Math.abs(speed);
bufferSource.start(t, offset, duration);
if (soundfont) {
bufferSource.start(t, offset); // duration does not work here for some reason
} else {
bufferSource.start(t, offset, duration);
}
bufferSource.stop(t + duration);
chain.push(bufferSource);
if (soundfont) {