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