jarviscrawlercore/src/imgutils.js

jarvis crawler core

// const Jimp = require('jimp');
const sharp = require('sharp');

// /**
//  * jimpGetImageInfo - get image infomation
//  * @param {buffer} buf - image data
//  * @return {object} obj - {w, h}
//  */
// async function jimpGetImageInfo(buf) {
//   try {
//     const img = await Jimp.read(buf);
//     if (img) {
//       return {w: img.bitmap.width, h: img.bitmap.height};
//     }
//   } catch (err) {}

//   return undefined;
// }

/**
 * sharpGetImageInfo - get image infomation
 * @param {buffer} buf - image data
 * @return {object} obj - {w, h}
 */
async function sharpGetImageInfo(buf) {
  try {
    const img = await sharp(buf);
    if (img) {
      const metadata = await img.metadata();
      return { w: metadata.width, h: metadata.height };
    }
  } catch (err) {}

  return undefined;
}

/**
 * getImageInfo - get image infomation
 * @param {buffer} buf - image data
 * @return {object} obj - {w, h}
 */
async function getImageInfo(buf) {
  return sharpGetImageInfo(buf);
}

/**
 * sharpGetImageFileInfo - get image file infomation
 * @param {string} fn - filename
 * @return {object} obj - {w, h}
 */
async function sharpGetImageFileInfo(fn) {
  try {
    const img = await sharp(fn);
    if (img) {
      const metadata = await img.metadata();
      return { w: metadata.width, h: metadata.height };
    }
  } catch (err) {}

  return undefined;
}

/**
 * getImageFileInfo - get image file infomation
 * @param {string} fn - filename
 * @return {object} obj - {w, h}
 */
async function getImageFileInfo(fn) {
  return sharpGetImageFileInfo(fn);
}

exports.getImageInfo = getImageInfo;
// exports.jimpGetImageInfo = jimpGetImageInfo;
exports.sharpGetImageInfo = sharpGetImageInfo;
exports.getImageFileInfo = getImageFileInfo;
exports.sharpGetImageFileInfo = sharpGetImageFileInfo;