37 lines
864 B
TypeScript
37 lines
864 B
TypeScript
import { Size } from '@cvmts/shared';
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import Piscina from 'piscina';
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import sharp from 'sharp';
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const kThumbnailSize: Size = {
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width: 400,
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height: 300
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};
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// this returns appropiate Sharp options to deal with CVMTS raw framebuffers
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// (which are RGBA bitmaps, essentially. We probably should abstract that out but
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// that'd mean having to introduce that to rfb and oihwekjtgferklds;./tghnredsltg;erhds)
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function GetRawSharpOptions(size: Size): sharp.CreateRaw {
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return {
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width: size.width,
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height: size.height,
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channels: 4
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};
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}
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export default async (opts: any) => {
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try {
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let out = await sharp(opts.buffer, { raw: GetRawSharpOptions(opts.size) })
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.resize(kThumbnailSize.width, kThumbnailSize.height, { fit: 'fill' })
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.jpeg({
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quality: opts.quality || 75
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})
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.toFormat('jpeg')
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.toBuffer();
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return out;
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} catch {
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return;
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}
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};
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