TIFF_SETTING_COMPRESSION
uint32 compression = fSettings->SetGetInt32(TIFF_SETTING_COMPRESSION);
{TIFF_SETTING_COMPRESSION, TRAN_SETTING_INT32, COMPRESSION_LZW}
uint32 currentCompression = fSettings->SetGetInt32(TIFF_SETTING_COMPRESSION);
fSettings->SetGetInt32(TIFF_SETTING_COMPRESSION, &value);