1ff70886a1
Co-authored-by: tobi <tobi.smethurst@protonmail.com> Reviewed-on: https://codeberg.org/superseriousbusiness/masto-fe-standalone/pulls/88 Co-authored-by: Zoë Bijl <moiety@noreply.codeberg.org> Co-committed-by: Zoë Bijl <moiety@noreply.codeberg.org>
112 lines
1.1 KiB
TypeScript
112 lines
1.1 KiB
TypeScript
const DIGIT_CHARACTERS = [
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"0",
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"1",
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"2",
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"3",
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"4",
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"5",
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"6",
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"7",
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"8",
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"9",
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"A",
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"B",
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"C",
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"D",
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"E",
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"F",
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"G",
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"H",
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"I",
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"J",
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"K",
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"L",
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"M",
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"N",
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"O",
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"P",
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"Q",
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"R",
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"S",
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"T",
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"U",
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"V",
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"W",
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"X",
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"Y",
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"Z",
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"a",
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"b",
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"c",
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"d",
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"e",
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"f",
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"g",
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"h",
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"i",
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"j",
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"k",
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"l",
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"m",
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"n",
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"o",
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"p",
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"q",
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"r",
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"s",
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"t",
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"u",
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"v",
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"w",
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"x",
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"y",
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"z",
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"#",
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"$",
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"%",
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"*",
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"+",
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",",
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"-",
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".",
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":",
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";",
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"=",
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"?",
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"@",
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"[",
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"]",
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"^",
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"_",
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"{",
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"|",
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"}",
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"~",
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];
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export const decode83 = (str: string) => {
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let value = 0;
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let digit;
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for (const c of str) {
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digit = DIGIT_CHARACTERS.indexOf(c);
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value = value * 83 + digit;
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}
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return value;
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};
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export const intToRGB = (int: number) => ({
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r: Math.max(0, int >> 16),
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g: Math.max(0, (int >> 8) & 255),
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b: Math.max(0, int & 255),
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});
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export const getAverageFromBlurhash = (blurhash: string) => {
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if (!blurhash) {
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return null;
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}
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return intToRGB(decode83(blurhash.slice(2, 6)));
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};
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