public int Length { get; set; }
The size of the data buffer in bytes. The value of this property should always be an even number and word-aligned.
using Leadtools;
using Leadtools.Twain;
public void GetJpegCompressionExample(IntPtr parent)
{
TwainSession session = new TwainSession();
session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);
string jpegdata;
try
{
TwainJpegCompression twainJpeg = session.GetJpegCompression(false);
int[] quantMap = twainJpeg.GetQuantizationMap();
int[] haffmanMap = twainJpeg.GetHuffmanMap();
TwainMemoryData[] quantTable = twainJpeg.GetQuantizationTable();
TwainMemoryData[] haffmanDC = twainJpeg.GetHuffmanDC();
TwainMemoryData[] haffmanAC = twainJpeg.GetHuffmanAC();
jpegdata = String.Format(@"Color Space = {0}\nQuantMap = {1}\nGetHuffmanMap = {2}\nGetQuantTable Flags = {3}\nGetQuantTable Length = {4}\nGetQuantTable Data = {5}\nGetHuffmanDC Flags = {6}\nGetHuffmanDC Data
= {7}\nGetHuffmanAC Flags = {8}\nGetHuffmanAC Data = {9}\n",
twainJpeg.ColorScheme,
quantMap[0],
haffmanMap[0],
quantTable[0].Flags,
quantTable[0].Length,
quantTable[0].Data,
haffmanDC[0].Flags,
haffmanDC[0].Data,
haffmanAC[0].Flags,
haffmanAC[0].Data);
MessageBox.Show(jpegdata);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
session.Shutdown();
}