public static void ReplaceStream(PRStream orig, PdfStream stream)
{
orig.Clear();
MemoryStream ms = new MemoryStream();
stream.WriteContent(ms);
orig.SetData(ms.ToArray(), false);
Console.WriteLine("Iterating keys");
foreach (System.Collections.Generic.KeyValuePair <PdfName, PdfObject> keyValuePair in stream)
{
orig.Put(keyValuePair.Key, stream.Get(keyValuePair.Key));
}
}
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());
}
private void Do_Image(PdfStream stream)
{
byte[] imageBuffer = null;
PdfName filter = PdfName.NONE;
if (stream.Contains(PdfName.FILTER))
{
filter = stream.GetAsName(PdfName.FILTER);
}
int imageWidth = stream.GetAsNumber(PdfName.WIDTH).IntValue;
int imageHeight = stream.GetAsNumber(PdfName.HEIGHT).IntValue;
int imageBpp = stream.GetAsNumber(PdfName.BITSPERCOMPONENT).IntValue;
PRStream prStream = stream as PRStream;
bool cannotReadImage = false;
Bitmap image = null;
try
{
PdfImageObject pdfImage = new PdfImageObject(prStream);
image = pdfImage.GetDrawingImage() as Bitmap;
string strFile = "C:\\PDF_Print\\pdf" + bmpfileidx.ToString() + ".bmp";
image.Save(strFile);
bmpfileidx++;
}
catch
{
try
{
if (filter == PdfName.FLATEDECODE)
{
byte[] streamBuffer = PdfReader.GetStreamBytes(prStream);
image = this.CreateBitmapFromFlateDecodeImage(streamBuffer, imageWidth, imageHeight, imageBpp);
string strFile = "C:\\PDF_Print\\pdf_" + bmpfileidx.ToString() + ".bmp";
image.Save(strFile);
bmpfileidx++;
}
}
catch
{
cannotReadImage = true;
}
}
if (!cannotReadImage)
{
image = this.ConvertToGrayscale(image);
//image = this.ConvertToBlackWhite(image);
using (var ms = new MemoryStream())
{
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 80L);
myEncoderParameters.Param[0] = myEncoderParameter;
image.Save(ms, jgpEncoder, myEncoderParameters);
imageBuffer = ms.ToArray();
//imageBuffer = ms.GetBuffer();
iTextSharp.text.Image newImage = iTextSharp.text.Image.GetInstance(imageBuffer);
newImage.SimplifyColorspace();
// PdfImage tempPdfImage = new PdfImage(newImage, newImage.ToString(), null);
// prStream.Clear();
// prStream.SetDataRaw(imageBuffer);
// prStream.Merge(tempPdfImage);
// imageBuffer = newImage.OriginalData;
//
prStream.Clear();
prStream.SetData(imageBuffer, false, PRStream.NO_COMPRESSION);
prStream.Put(PdfName.TYPE, PdfName.XOBJECT);
prStream.Put(PdfName.SUBTYPE, PdfName.IMAGE);
prStream.Put(PdfName.FILTER, PdfName.DCTDECODE);
prStream.Put(PdfName.WIDTH, new PdfNumber(image.Width));
prStream.Put(PdfName.HEIGHT, new PdfNumber(image.Height));
prStream.Put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
prStream.Put(PdfName.COLORSPACE, PdfName.DEVICERGB);
prStream.Put(PdfName.LENGTH, new PdfNumber(imageBuffer.LongLength));
}
}
}
private void Do_Image(PdfStream stream)
{
byte[] imageBuffer = null;
PdfName filter = PdfName.NONE;
if (stream.Contains(PdfName.FILTER))
{
filter = stream.GetAsName(PdfName.FILTER);
}
int imageWidth = stream.GetAsNumber(PdfName.WIDTH).IntValue;
int imageHeight = stream.GetAsNumber(PdfName.HEIGHT).IntValue;
int imageBpp = stream.GetAsNumber(PdfName.BITSPERCOMPONENT).IntValue;
PRStream prStream = stream as PRStream;
bool cannotReadImage = false;
Bitmap image = null;
try
{
PdfImageObject pdfImage = new PdfImageObject(prStream);
image = pdfImage.GetDrawingImage() as Bitmap;
}
catch
{
try
{
if (filter == PdfName.FLATEDECODE)
{
byte[] streamBuffer = PdfReader.GetStreamBytes(prStream);
image = this.CreateBitmapFromFlateDecodeImage(streamBuffer, imageWidth, imageHeight, imageBpp);
}
}
catch
{
cannotReadImage = true;
}
}
if (!cannotReadImage)
{
image = this.ConvertToGrayscale(image);
using (var ms = new MemoryStream())
{
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
EncoderParameters myEncoderParameters = new EncoderParameters(1);
//EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 80L);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 15L);
myEncoderParameters.Param[0] = myEncoderParameter;
image.Save(ms, jgpEncoder, myEncoderParameters);
imageBuffer = ms.GetBuffer();
}
Image compressedImage = Image.GetInstance(imageBuffer);
imageBuffer = compressedImage.OriginalData;
prStream.Clear();
//prStream.SetData(imageBuffer, false, PRStream.NO_COMPRESSION);
prStream.SetData(imageBuffer, false, PRStream.BEST_COMPRESSION);
prStream.Put(PdfName.TYPE, PdfName.XOBJECT);
prStream.Put(PdfName.SUBTYPE, PdfName.IMAGE);
prStream.Put(PdfName.FILTER, PdfName.DCTDECODE);
prStream.Put(PdfName.WIDTH, new PdfNumber(image.Width));
prStream.Put(PdfName.HEIGHT, new PdfNumber(image.Height));
prStream.Put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
prStream.Put(PdfName.COLORSPACE, PdfName.DEVICERGB);
prStream.Put(PdfName.LENGTH, new PdfNumber(imageBuffer.LongLength));
}
}
