Function sticker2

lib/sticker.js:22–64

* Image to Sticker * @param {Buffer} img Image Buffer * @param {String} url Image URL

(img, url)

 * @param {String} url Image URL
 */
function sticker2(img, url) {
  return new Promise(async (resolve, reject) => {
    try {
      if (url) {
        let res = await fetch(url)
        if (res.status !== 200) throw await res.text()
        img = await res.buffer()
      }
      let inp = path.join(tmp, +new Date() + '.jpeg')
      await fs.promises.writeFile(inp, img)
      let ff = spawn('ffmpeg', [
        '-y',
        '-i',
        inp,
        '-vf',
        'scale=512:512:flags=lanczos:force_original_aspect_ratio=decrease,format=rgba,pad=512:512:(ow-iw)/2:(oh-ih)/2:color=#00000000,setsar=1',
        '-f',
        'png',
        '-',
      ])
      ff.on('error', reject)
      ff.on('close', async () => {
        await fs.promises.unlink(inp)
      })
      let bufs = []
      const [_spawnprocess, ..._spawnargs] = [
        ...(module.exports.support.gm ? ['gm'] : module.exports.magick ? ['magick'] : []),
        'convert',
        'png:-',
        'webp:-',
      ]
      let im = spawn(_spawnprocess, _spawnargs)
      im.on('error', e => conn.reply(m.chat, util.format(e), m))
      im.stdout.on('data', chunk => bufs.push(chunk))
      ff.stdout.pipe(im.stdin)
      im.on('exit', () => {
        resolve(Buffer.concat(bufs))
      })
    } catch (e) {
      reject(e)
    }
  })
}

/**
 * Image/Video to Sticker