private void SavePage(Image image, ImagePageHeader pageHeader, int rowsInPage, bool lastPage)
{
var imageRows = image.Rows.Skip(pageHeader.Index * rowsInPage).Take(rowsInPage).ToArray();
var pageHeaderPosition = BaseStream.Position;
this.BaseStream.Position += 31;
this.BaseStream.Position += pageHeader.PageSize;
foreach (ImageRow imageRow in imageRows)
{
imageRow.HeaderAddress = (uint)BaseStream.Position;
//Image Row Header
WriteImageRowHeader(imageRow);
imageRow.BodyAddress = (uint)BaseStream.Position;
//Imabe body
WriteImageBody(imageRow);
}
uint nextPagePosition = (uint)BaseStream.Position;
BaseStream.Position = pageHeaderPosition;
//Save page header
Write(pageHeader.Data1);
StringBuilder sb = new StringBuilder();
sb.Append(pageHeader.FullSize.ToString("X").PadLeft(8, '0').ToLower() + " ");
sb.Append(pageHeader.PageSize.ToString("X").PadLeft(8, '0').ToLower() + " ");
if (lastPage)
{
sb.Append(((uint)0x7fffffff).ToString("X").PadLeft(8, '0').ToLower() + " ");
}
else
{
sb.Append(nextPagePosition.ToString("X").PadLeft(8, '0').ToLower() + " ");
}
Write(sb.ToString().ToCharArray());
Write(pageHeader.Data2);
foreach (ImageRow imageRow in imageRows)
{
Write(imageRow.HeaderAddress);
Write(imageRow.BodyAddress);
Write((uint)0x7fffffff);
}
BaseStream.Position = nextPagePosition;
}
private ImagePageHeader ReadPageHeader()
{
ImagePageHeader ph = new ImagePageHeader();
ph.Position = BaseStream.Position;
ph.Data1 = ReadUInt16();
char[] ch = ReadChars(27);
string str = new String(ch);
ph.FullSize = UInt32.Parse(str.Substring(0, 8), NumberStyles.HexNumber);
ph.PageSize = UInt32.Parse(str.Substring(9, 8), NumberStyles.HexNumber);
ph.NextPageAddress = UInt32.Parse(str.Substring(18, 8), NumberStyles.HexNumber);
ph.Data2 = ReadUInt16();
return(ph);
}
