+
+// ---------------------------------------------------------------------------
+
+async function jimpProcessor (path: string, destination: string, newSize: { width: number, height: number }, inputExt: string) {
+ let jimpInstance: Jimp
+ const inputBuffer = await readFile(path)
+
+ try {
+ jimpInstance = await Jimp.read(inputBuffer)
+ } catch (err) {
+ logger.debug('Cannot read %s with jimp. Try to convert the image using ffmpeg first.', path, { err })
+
+ const newName = path + '.jpg'
+ await convertWebPToJPG(path, newName)
+ await rename(newName, path)
+
+ jimpInstance = await Jimp.read(path)
+ }
+
+ await remove(destination)
+
+ // Optimization if the source file has the appropriate size
+ const outputExt = getLowercaseExtension(destination)
+ if (skipProcessing({ jimpInstance, newSize, imageBytes: inputBuffer.byteLength, inputExt, outputExt })) {
+ return copy(path, destination)
+ }
+
+ await jimpInstance
+ .resize(newSize.width, newSize.height)
+ .quality(80)
+ .writeAsync(destination)
+}
+
+function skipProcessing (options: {
+ jimpInstance: Jimp
+ newSize: { width: number, height: number }
+ imageBytes: number
+ inputExt: string
+ outputExt: string
+}) {
+ const { jimpInstance, newSize, imageBytes, inputExt, outputExt } = options
+ const { width, height } = newSize
+
+ if (jimpInstance.getWidth() > width || jimpInstance.getHeight() > height) return false
+ if (inputExt !== outputExt) return false
+
+ const kB = 1000
+
+ if (height >= 1000) return imageBytes <= 200 * kB
+ if (height >= 500) return imageBytes <= 100 * kB
+
+ return imageBytes <= 15 * kB
+}