/// <summary>
/// Extracts the raw data from the image into a byte array suitable
/// for including in the PDF document. The image is always extracted
/// as a 24-bit RGB image, regardless of it's original colour space
/// and colour depth.
/// </summary>
/// <param name="bitmap">The <see cref="Bitmap"/> from which the data is extracted</param>
/// <returns>A byte array containing the raw 24-bit RGB data</returns>
private void ExtractImage(Bitmap bitmap)
{
// This should be a factory when we handle more image types
if (bitmap.RawFormat.Equals(ImageFormat.Jpeg))
{
using (JpegParser parser = new JpegParser(m_bitmaps))
{
using (JpegInfo info = parser.Parse())
{
m_bitsPerPixel = info.BitsPerSample;
m_colorSpace = new ColorSpace(info.ColourSpace);
width = info.Width;
height = info.Height;
}
}
// A "no-op" filter since the JPEG data is already compressed
filter = new DctFilter();
}
else
{
ExtractOtherImageBits(bitmap);
// Performs zip compression
filter = new FlateFilter();
}
}
public void Dispose()
{
this.headerInfo = null;
this.iccProfileData = null;
if (ms != null)
{
this.ms.Dispose();
}
ms = null;
this.headerInfo = null;
}
/// <summary>
/// Class constructor.
/// </summary>
/// <param name="data"></param>
public JpegParser(byte[] data)
{
this.ms = new MemoryStream(data);
this.headerInfo = new JpegInfo();
}
/// <summary>
/// Class constructor.
/// </summary>
/// <param name="data"></param>
public JpegParser(byte[] data)
{
this.ms = new MemoryStream(data);
this.headerInfo = new JpegInfo();
}