private static ImageData CreateImageInstance(byte[] bytes, bool recoverImage)
{
ImageType imageType = ImageTypeDetector.DetectImageType(bytes);
switch (imageType)
{
case ImageType.GIF: {
GifImageData image = new GifImageData(bytes);
GifImageHelper.ProcessImage(image, 0);
return(image.GetFrames()[0]);
}
case ImageType.JPEG: {
ImageData image = new JpegImageData(bytes);
JpegImageHelper.ProcessImage(image);
return(image);
}
case ImageType.JPEG2000: {
ImageData image = new Jpeg2000ImageData(bytes);
Jpeg2000ImageHelper.ProcessImage(image);
return(image);
}
case ImageType.PNG: {
ImageData image = new PngImageData(bytes);
PngImageHelper.ProcessImage(image);
return(image);
}
case ImageType.BMP: {
ImageData image = new BmpImageData(bytes, false);
BmpImageHelper.ProcessImage(image);
return(image);
}
case ImageType.TIFF: {
ImageData image = new TiffImageData(bytes, recoverImage, 1, false);
TiffImageHelper.ProcessImage(image);
return(image);
}
case ImageType.JBIG2: {
ImageData image = new Jbig2ImageData(bytes, 1);
Jbig2ImageHelper.ProcessImage(image);
return(image);
}
default: {
throw new iText.IO.IOException(iText.IO.IOException.ImageFormatCannotBeRecognized);
}
}
}
public static ImageData CreateJbig2(byte[] bytes, int page)
{
if (page < 1)
{
throw new ArgumentException("The page number must be greater than 0");
}
ValidateImageType(bytes, ImageType.JBIG2);
ImageData image = new Jbig2ImageData(bytes, page);
Jbig2ImageHelper.ProcessImage(image);
return(image);
}
public static ImageData CreateJbig2(byte[] bytes, int page)
{
if (page < 1)
{
throw new ArgumentException("The page number must be greater than 0");
}
byte[] imageType = ReadImageType(bytes);
if (ImageTypeIs(imageType, jbig2))
{
ImageData image = new Jbig2ImageData(bytes, page);
Jbig2ImageHelper.ProcessImage(image);
return(image);
}
throw new ArgumentException("JBIG2 image expected.");
}
public static void ProcessImage(ImageData jbig2)
{
if (jbig2.GetOriginalType() != ImageType.JBIG2)
{
throw new ArgumentException("JBIG2 image expected");
}
Jbig2ImageData image = (Jbig2ImageData)jbig2;
try {
IRandomAccessSource ras;
if (image.GetData() == null)
{
image.LoadData();
}
ras = new RandomAccessSourceFactory().CreateSource(image.GetData());
RandomAccessFileOrArray raf = new RandomAccessFileOrArray(ras);
Jbig2SegmentReader sr = new Jbig2SegmentReader(raf);
sr.Read();
Jbig2SegmentReader.Jbig2Page p = sr.GetPage(image.GetPage());
raf.Close();
image.SetHeight(p.pageBitmapHeight);
image.SetWidth(p.pageBitmapWidth);
image.SetBpc(1);
image.SetColorSpace(1);
//TODO JBIG2 globals caching
byte[] globals = sr.GetGlobal(true);
//TODO due to the fact, that streams now may be transformed to indirect objects only on writing,
//pdfStream.getDocument() cannot longer be the sign of inline/indirect images
// in case inline image pdfStream.getDocument() will be null
if (globals != null)
{
/*&& stream.getDocument() != null*/
IDictionary <String, Object> decodeParms = new Dictionary <String, Object>();
// PdfStream globalsStream = new PdfStream().makeIndirect(pdfStream.getDocument());
// globalsStream.getOutputStream().write(globals);
decodeParms["JBIG2Globals"] = globals;
image.decodeParms = decodeParms;
}
image.SetFilter("JBIG2Decode");
image.SetColorSpace(1);
image.SetBpc(1);
image.data = p.GetData(true);
}
catch (System.IO.IOException e) {
throw new iText.IO.IOException(iText.IO.IOException.Jbig2ImageException, e);
}
}
private static ImageData CreateImageInstance(byte[] bytes, bool recoverImage)
{
byte[] imageType = ReadImageType(bytes);
if (ImageTypeIs(imageType, gif))
{
GifImageData image = new GifImageData(bytes);
GifImageHelper.ProcessImage(image, 0);
return(image.GetFrames()[0]);
}
else
{
if (ImageTypeIs(imageType, jpeg))
{
ImageData image = new JpegImageData(bytes);
JpegImageHelper.ProcessImage(image);
return(image);
}
else
{
if (ImageTypeIs(imageType, jpeg2000_1) || ImageTypeIs(imageType, jpeg2000_2))
{
ImageData image = new Jpeg2000ImageData(bytes);
Jpeg2000ImageHelper.ProcessImage(image);
return(image);
}
else
{
if (ImageTypeIs(imageType, png))
{
ImageData image = new PngImageData(bytes);
PngImageHelper.ProcessImage(image);
return(image);
}
else
{
if (ImageTypeIs(imageType, bmp))
{
ImageData image = new BmpImageData(bytes, false, 0);
BmpImageHelper.ProcessImage(image);
return(image);
}
else
{
if (ImageTypeIs(imageType, tiff_1) || ImageTypeIs(imageType, tiff_2))
{
ImageData image = new TiffImageData(bytes, recoverImage, 1, false);
TiffImageHelper.ProcessImage(image);
return(image);
}
else
{
if (ImageTypeIs(imageType, jbig2))
{
ImageData image = new Jbig2ImageData(bytes, 1);
Jbig2ImageHelper.ProcessImage(image);
return(image);
}
}
}
}
}
}
}
throw new iText.IO.IOException(iText.IO.IOException.ImageFormatCannotBeRecognized);
}
