/// <summary>
/// Will stock the thumbnail into exif directory if available.
/// </summary>
/// <param name="exifDirectory">where to stock the thumbnail</param>
/// <param name="tiffHeaderOffset">the tiff lcHeader lcOffset value</param>
private void StoreThumbnailBytes(AbstractDirectory exifDirectory, int tiffHeaderOffset)
{
if (!exifDirectory.ContainsTag(ExifDirectory.TAG_COMPRESSION))
{
return;
}
if (!exifDirectory.ContainsTag(ExifDirectory.TAG_THUMBNAIL_LENGTH) ||
!exifDirectory.ContainsTag(ExifDirectory.TAG_THUMBNAIL_OFFSET))
{
return;
}
try
{
int offset = exifDirectory.GetInt(ExifDirectory.TAG_THUMBNAIL_OFFSET);
int length = exifDirectory.GetInt(ExifDirectory.TAG_THUMBNAIL_LENGTH);
byte[] result = new byte[length];
for (int i = 0; i < result.Length; i++)
{
result[i] = base.data[tiffHeaderOffset + offset + i];
}
exifDirectory.SetObject(ExifDirectory.TAG_THUMBNAIL_DATA, result);
}
catch (Exception e)
{
exifDirectory.HasError = true;
Trace.TraceError("Unable to extract thumbnail: " + e.Message);
}
}
