public PDFImage(PDFStream stream, PDFDictionary filterParams)
: base(stream)
{
try
{
Image = new Bitmap(new MemoryStream(Data));
}
catch
{
}
}
public PDFStream ApplyFilter(string filter, PDFDictionary filterParams)
{
switch (filter)
{
case "FlateDecode": return(FlateDecode(filterParams));
case "DCTDecode": return(new PDFImage(this, filterParams));
case "CCITTFaxDecode": return(this);
default: throw new NotImplementedException();
}
}
public IPDFToken Parse(Stack <IPDFToken> stack)
{
switch (TokenType)
{
case PDFTokenType.EndDictionary:
return(PDFDictionary.Parse(stack));
case PDFTokenType.EndList:
return(PDFList.Parse(stack));
case PDFTokenType.EOF:
return(PDFTrailer.Parse(stack));
default:
return(this);
}
}
public PDFStream FlateDecode(PDFDictionary filterParams)
{
using (ZlibStream strm = new ZlibStream(new MemoryStream(Data), CompressionMode.Decompress))
{
byte[] outdata = new byte[1048576];
int pos = 0;
int len = 0;
do
{
Array.Resize(ref outdata, pos + 1048576);
len = strm.Read(outdata, pos, outdata.Length - pos);
pos += len;
}while (len > 0);
Array.Resize(ref outdata, pos);
return(new PDFStream {
Data = outdata, Options = Options
});
}
}
