public static async Task <TIFF> LoadFromStream(Stream stream)
{
var tiff = new TIFF();
tiff._ifh = await ImageFileHeader.LoadFromStream(stream);
if (tiff._ifh.OffsetOf1stIFD == 0)
{
return(tiff);
}
stream.Position = tiff._ifh.OffsetOf1stIFD;
while (true)
{
var ifd = await ImageFileDirectory.LoadFromStream(stream, tiff._ifh.IsLittleEndian);
tiff.ImageFileDirectories.Add(ifd);
if (ifd.OffsetOfNextIFD == 0)
{
break;
}
stream.Position = ifd.OffsetOfNextIFD;
}
return(tiff);
}
public static async Task <ImageFileDirectory> LoadFromStream(Stream stream, bool isLitteleEndian)
{
var ifd = new ImageFileDirectory();
var binaryReader = new BinaryTools.BinaryReader(stream, isLitteleEndian);
var count = await binaryReader.ReadUInt16Async();
for (int i = 0; i < count; ++i)
{
var ifdEntry = await IFDEntry.LoadFromStream(stream, isLitteleEndian);
ifd.IFDEntries.Add(ifdEntry);
}
ifd.OffsetOfNextIFD = await binaryReader.ReadUInt32Async();
return(ifd);
}