90 lines
1.5 KiB
JavaScript
Vendored
90 lines
1.5 KiB
JavaScript
Vendored
'use strict';
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const execBuffer = require('exec-buffer');
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const isJpg = require('is-jpg');
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const mozjpeg = require('mozjpeg');
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module.exports = opts => buf => {
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opts = Object.assign({}, opts);
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if (!Buffer.isBuffer(buf)) {
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return Promise.reject(new TypeError('Expected a buffer'));
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}
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if (!isJpg(buf)) {
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return Promise.resolve(buf);
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}
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const args = ['-outfile', execBuffer.output];
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if (typeof opts.quality !== 'undefined') {
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args.push('-quality', opts.quality);
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}
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if (opts.progressive === false) {
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args.push('-baseline');
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}
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if (opts.targa) {
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args.push('-targa');
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}
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if (opts.revert) {
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args.push('-revert');
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}
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if (opts.fastcrush) {
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args.push('-fastcrush');
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}
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if (typeof opts.dcScanOpt !== 'undefined') {
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args.push('-dc-scan-opt', opts.dcScanOpt);
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}
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if (opts.notrellis) {
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args.push('-notrellis');
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}
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if (opts.notrellisDC) {
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args.push('-notrellis-dc');
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}
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if (opts.tune) {
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args.push(`-tune-${opts.tune}`);
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}
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if (opts.noovershoot) {
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args.push('-noovershoot');
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}
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if (opts.arithmetic) {
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args.push('-arithmetic');
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}
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if (opts.dct) {
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args.push('-dct', opts.dct);
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}
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if (typeof opts.quantTable !== 'undefined') {
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args.push('-quant-table', opts.quantTable);
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}
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if (opts.smooth) {
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args.push('-smooth', opts.smooth);
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}
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if (opts.maxmemory) {
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args.push('-maxmemory', opts.maxmemory);
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}
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args.push(execBuffer.input);
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return execBuffer({
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input: buf,
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bin: mozjpeg,
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args
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}).catch(err => {
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err.message = err.stderr || err.message;
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throw err;
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});
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};
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