/// <summary>
/// Initializes a new instance of the Bytescout.PDF.Image class from the specified existing image.
/// </summary>
/// <param name="image" href="http://msdn.microsoft.com/en-us/library/system.drawing.image.aspx">The System.Drawing.Image from which to create the new Bytescout.PDF.Image.</param>
/// <param name="compression">The compression filter used for this image.</param>
/// <param name="jpegQuality">The JPEG quality.</param>
public Image(System.Drawing.Image image, ImageCompression compression, int jpegQuality)
: this(image)
{
Compression = compression;
if (compression == ImageCompression.DCT)
{
DCTDecoder.Encode(image, _dict.GetStream(), jpegQuality);
}
}
/// <summary>
/// Initializes a new instance of the Bytescout.PDF.Image class from the specified data stream.
/// </summary>
/// <param name="stream" href="http://msdn.microsoft.com/en-us/library/system.io.stream.aspx">The data stream used to load the image.</param>
/// <param name="compression">The compression filter used for this image.</param>
/// <param name="jpegQuality">The JPEG quality.</param>
public Image(Stream stream, ImageCompression compression, int jpegQuality)
: this(stream)
{
Compression = compression;
if (compression == ImageCompression.DCT)
{
System.Drawing.Image image = System.Drawing.Image.FromStream(stream);
DCTDecoder.Encode(image, _dict.GetStream(), jpegQuality);
image.Dispose();
}
}
public void Decode()
{
Filter[] filters = getFilters();
if (filters.Length == 0)
{
return;
}
_stream.Position = 0;
try
{
for (int i = 0; i < filters.Length; ++i)
{
switch (filters[i])
{
case Filter.ASCII85:
_stream = ASCII85Decoder.Decode(_stream);
break;
case Filter.ASCIIHex:
_stream = ASCIIHexDecoder.Decode(_stream);
break;
case Filter.RunLength:
_stream = RunLengthDecoder.Decode(_stream);
break;
case Filter.JPX:
_stream = JPXDecoder.Decode(_stream);
break;
case Filter.CCITTFax:
_stream = CCITTFaxDecoder.Decode(_stream, getDecodeParameters(i));
break;
case Filter.DCT:
_stream = DCTDecoder.Decode(_stream, getDecodeParameters(i));
break;
case Filter.Flate:
_stream = FlateDecoder.Decode(_stream, getDecodeParameters(i));
break;
case Filter.JBIG2:
_stream = JBIG2Decoder.Decode(_stream, getDecodeParameters(i));
break;
case Filter.LZW:
_stream = LZWDecoder.Decode(_stream, getDecodeParameters(i));
break;
}
_stream.Position = 0;
}
}
catch
{
return;
}
_dictionary.RemoveItem("Filter");
_dictionary.RemoveItem("DecodeParms");
}
