static int TIFFDefaultRefBlackWhite ( TIFFDirectory * td ) [static]

Definition at line 106 of file tif_aux.c.

{
    int i;

    if (!(td->td_refblackwhite = (float *)_TIFFmalloc(6*sizeof (float))))
        return 0;
        if (td->td_photometric == PHOTOMETRIC_YCBCR) {
        /*
         * YCbCr (Class Y) images must have the ReferenceBlackWhite
         * tag set. Fix the broken images, which lacks that tag.
         */
        td->td_refblackwhite[0] = 0.0F;
        td->td_refblackwhite[1] = td->td_refblackwhite[3] =
            td->td_refblackwhite[5] = 255.0F;
        td->td_refblackwhite[2] = td->td_refblackwhite[4] = 128.0F;
    } else {
        /*
         * Assume RGB (Class R)
         */
        for (i = 0; i < 3; i++) {
            td->td_refblackwhite[2*i+0] = 0;
            td->td_refblackwhite[2*i+1] =
                (float)((1L<<td->td_bitspersample)-1L);
        }
    }
    return 1;
}

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