2023.04.08 13:22 "Re: [Tiff] TIFF/EP", by David C. Partridge

I *think* that this is about right.

             // 
             // Attempt to read the CFA from the root dir 
             // 
             uint16_t cfarepeatpatterndim[2]{ 0 }; 
             if (TIFFGetField(m_tiff, TIFFTAG_CFAREPEATPATTERNDIM, &cfarepeatpatterndim)) 
             { 
                    uint16_t 
                           x{ (cfarepeatpatterndim[0]) }, 
                           y{ (cfarepeatpatterndim[1]) }; 

                           uint8_t* cfapattern = static_cast<uint8_t*>(alloca(x * y)); 
                           TIFFGetField(m_tiff, TIFFTAG_CFAPATTERN, &cfapattern); 
             }