public static byte[] GetPictureFromPdf(Stream stream)
{
byte[] imageData = new byte[0];
string path = Path.Combine(Directory.GetParent(Directory.GetCurrentDirectory()).FullName, "wwwroot", "CV Parser", "Pictures");
using (PdfReader pdfReader = new PdfReader(stream))
{
for (int i = 0; i < pdfReader.XrefSize; i++)
{
PdfObject po = pdfReader.GetPdfObject(i);
if (po == null || !po.IsStream()) //object not found so continue
{
continue;
}
PRStream pst = (PRStream)po;
PdfObject type = pst.Get(PdfName.SUBTYPE); //get the object type
//check if the object is the image type object
if (type != null && type.ToString().Equals(PdfName.IMAGE.ToString()))
{
PdfImageObject pio = new PdfImageObject(pst);
int imageLength = pio.GetImageAsBytes().Length;
if (imageLength != WatermarkSize && imageLength > imageData.Length)
{
imageData = pio.GetImageAsBytes();
}
}
}
}
return(imageData);
}
public virtual bool CompareStreams(PRStream outStream, PRStream cmpStream)
{
bool decodeStreams = PdfName.FLATEDECODE.Equals(outStream.Get(PdfName.FILTER));
byte[] outStreamBytes = PdfReader.GetStreamBytesRaw(outStream);
byte[] cmpStreamBytes = PdfReader.GetStreamBytesRaw(cmpStream);
if (decodeStreams)
{
outStreamBytes = PdfReader.DecodeBytes(outStreamBytes, outStream);
cmpStreamBytes = PdfReader.DecodeBytes(cmpStreamBytes, cmpStream);
}
return(Util.ArraysAreEqual(outStreamBytes, cmpStreamBytes));
}
private void UpdateImageStream(PRStream imageStream, byte[] newData)
{
PdfImage image = new PdfImage(Image.GetInstance(newData), "", null);
if (imageStream.Contains(PdfName.SMASK))
{
image.Put(PdfName.SMASK, imageStream.Get(PdfName.SMASK));
}
if (imageStream.Contains(PdfName.MASK))
{
image.Put(PdfName.MASK, imageStream.Get(PdfName.MASK));
}
if (imageStream.Contains(PdfName.SMASKINDATA))
{
image.Put(PdfName.SMASKINDATA, imageStream.Get(PdfName.SMASKINDATA));
}
imageStream.Clear();
imageStream.PutAll(image);
imageStream.SetDataRaw(image.GetBytes());
}
