Convert PDF Documents to Image Documents

val cPDFConvert = CPDFConverterImg(context, uri, "")

val params = CPDFConvertImgOptions().apply {
     imageDpi = 900
     imgType = ImgType.JPEG
     isContainAnnotations = true
}

val result: ConvertError = cPDFConvert.convert(outputDir, outputFilenameNoSuffix, params, pageArrays, 
onHandle = onHandleCal, 
onProgress = onProgressCal, 
onPost = onPostCal)