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Merge pull request #1321 from daslyfe/jade/slit

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feat: Create scrub function for scrubbing an audio file
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Jade (Rose) Rowland 2025-04-20 12:24:15 -04:00 committed by GitHub
commit 90506f9e61
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29
packages/core/controls.mjs
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@ -1780,3 +1780,32 @@ export const as = register('as', (mapping, pat) => {
return v;
});
});
/**
* Allows you to scrub an audio file like a tape loop by passing values that represents the position in the audio file
* in the optional array syntax ex: "0.5:2", the second value controls the speed of playback
* @name scrub
* @memberof Pattern
* @returns Pattern
* @example
* samples('github:switchangel/pad')
* s("swpad:0").scrub("{0.1!2 .25@3 0.7!2 <0.8:1.5>}%8")
* @example
* samples('github:yaxu/clean-breaks/main');
* s("amen/4").fit().scrub("{0@3 0@2 4@3}%8".div(16))
*/
export const scrub = register(
'scrub',
(beginPat, pat) => {
return beginPat.outerBind((v) => {
if (!Array.isArray(v)) {
v = [v];
}
const [beginVal, speedMultiplier = 1] = v;
return pat.begin(beginVal).mul(speed(speedMultiplier)).clip(1);
});
},
false,
);

46
test/__snapshots__/examples.test.mjs.snap
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@ -7871,6 +7871,52 @@ but parts might be played more than once, or not at all, per cycle." example ind
]
`;
exports[`runs examples > example "scrub" example index 0 1`] = `
[
"[ 0/1 → 1/8 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 1/8 → 1/4 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 1/4 → 5/8 | s:swpad n:0 begin:0.25 speed:1 clip:1 ]",
"[ 5/8 → 3/4 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 3/4 → 7/8 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 7/8 → 1/1 | s:swpad n:0 begin:0.8 speed:1.5 clip:1 ]",
"[ 1/1 → 9/8 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 9/8 → 5/4 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 5/4 → 13/8 | s:swpad n:0 begin:0.25 speed:1 clip:1 ]",
"[ 13/8 → 7/4 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 7/4 → 15/8 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 15/8 → 2/1 | s:swpad n:0 begin:0.8 speed:1.5 clip:1 ]",
"[ 2/1 → 17/8 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 17/8 → 9/4 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 9/4 → 21/8 | s:swpad n:0 begin:0.25 speed:1 clip:1 ]",
"[ 21/8 → 11/4 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 11/4 → 23/8 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 23/8 → 3/1 | s:swpad n:0 begin:0.8 speed:1.5 clip:1 ]",
"[ 3/1 → 25/8 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 25/8 → 13/4 | s:swpad n:0 begin:0.1 speed:1 clip:1 ]",
"[ 13/4 → 29/8 | s:swpad n:0 begin:0.25 speed:1 clip:1 ]",
"[ 29/8 → 15/4 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 15/4 → 31/8 | s:swpad n:0 begin:0.7 speed:1 clip:1 ]",
"[ 31/8 → 4/1 | s:swpad n:0 begin:0.8 speed:1.5 clip:1 ]",
]
`;
exports[`runs examples > example "scrub" example index 1 1`] = `
[
"[ 0/1 → 3/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 3/8 → 5/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 5/8 → 1/1 | s:amen speed:0.25 unit:c begin:0.25 clip:1 ]",
"[ 1/1 → 11/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 11/8 → 13/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 13/8 → 2/1 | s:amen speed:0.25 unit:c begin:0.25 clip:1 ]",
"[ 2/1 → 19/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 19/8 → 21/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 21/8 → 3/1 | s:amen speed:0.25 unit:c begin:0.25 clip:1 ]",
"[ 3/1 → 27/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 27/8 → 29/8 | s:amen speed:0.25 unit:c begin:0 clip:1 ]",
"[ 29/8 → 4/1 | s:amen speed:0.25 unit:c begin:0.25 clip:1 ]",
]
`;
exports[`runs examples > example "segment" example index 0 1`] = `
[
"[ 0/1 → 1/24 | note:40 ]",