internal override ImageData PrepareImageData()
{
ImagePrivateDataDct data = (ImagePrivateDataDct)Data;
ImageDataDct imageData = new ImageDataDct();
imageData.Data = data.Data;
imageData.Length = data.Length;
return(imageData);
}
// TODO Find information about JPEG2000.
// Notes: JFIF is big-endian.
public ImportedImage ImportImage(StreamReaderHelper stream, PdfDocument document)
{
try
{
stream.CurrentOffset = 0;
// Test 2 magic bytes.
if (TestFileHeader(stream))
{
// Skip over 2 magic bytes.
stream.CurrentOffset += 2;
ImagePrivateDataDct ipd = new ImagePrivateDataDct(stream.Data, stream.Length);
ImportedImage ii = new ImportedImageJpeg(this, ipd, document);
if (TestJfifHeader(stream, ii))
{
bool colorHeader = false, infoHeader = false;
while (MoveToNextHeader(stream))
{
if (TestColorFormatHeader(stream, ii))
{
colorHeader = true;
}
else if (TestInfoHeader(stream, ii))
{
infoHeader = true;
}
}
if (colorHeader && infoHeader)
{
return(ii);
}
}
}
}
// ReSharper disable once EmptyGeneralCatchClause
catch (Exception)
{
}
return(null);
}
// TODO Find information about JPEG2000.
// Notes: JFIF is big-endian.
public ImportedImage ImportImage(StreamReaderHelper stream, PdfDocument document)
{
try
{
stream.CurrentOffset = 0;
// Test 2 magic bytes.
if (TestFileHeader(stream))
{
// Skip over 2 magic bytes.
stream.CurrentOffset += 2;
ImagePrivateDataDct ipd = new ImagePrivateDataDct(stream.Data, stream.Length);
ImportedImage ii = new ImportedImageJpeg(this, ipd, document);
if (TestJfifHeader(stream, ii))
{
bool colorHeader = false, infoHeader = false;
while (MoveToNextHeader(stream))
{
if (TestColorFormatHeader(stream, ii))
{
colorHeader = true;
}
else if (TestInfoHeader(stream, ii))
{
infoHeader = true;
}
}
if (colorHeader && infoHeader)
return ii;
}
}
}
// ReSharper disable once EmptyGeneralCatchClause
catch (Exception)
{
}
return null;
}
/// <summary>
/// Initializes a new instance of the <see cref="ImportedImageJpeg"/> class.
/// </summary>
public ImportedImageJpeg(IImageImporter importer, ImagePrivateDataDct data, PdfDocument document)
: base(importer, data, document)
{ }
/// <summary>
/// Initializes a new instance of the <see cref="ImportedImageJpeg"/> class.
/// </summary>
public ImportedImageJpeg(IImageImporter importer, ImagePrivateDataDct data, PdfDocument document)
: base(importer, data, document)
{
}
