Cross Reference: /external/libpng/png.c

Lines Matching defs:XYZ
1196 png_xy_from_XYZ(png_xy *xy, const png_XYZ *XYZ)
1200    d = XYZ->red_X + XYZ->red_Y + XYZ->red_Z;
1201    if (!png_muldiv(&xy->redx, XYZ->red_X, PNG_FP_1, d)) return 1;
1202    if (!png_muldiv(&xy->redy, XYZ->red_Y, PNG_FP_1, d)) return 1;
1204    whiteX = XYZ->red_X;
1205    whiteY = XYZ->red_Y;
1207    d = XYZ->green_X + XYZ->green_Y + XYZ->green_Z;
1208    if (!png_muldiv(&xy->greenx, XYZ->green_X, PNG_FP_1, d)) return 1;
1209    if (!png_muldiv(&xy->greeny, XYZ->green_Y, PNG_FP_1, d)) return 1;
1211    whiteX += XYZ->green_X;
1212    whiteY += XYZ->green_Y;
1214    d = XYZ->blue_X + XYZ->blue_Y + XYZ->blue_Z;
1215    if (!png_muldiv(&xy->bluex, XYZ->blue_X, PNG_FP_1, d)) return 1;
1216    if (!png_muldiv(&xy->bluey, XYZ->blue_Y, PNG_FP_1, d)) return 1;
1218    whiteX += XYZ->blue_X;
1219    whiteY += XYZ->blue_Y;
1231 png_XYZ_from_xy(png_XYZ *XYZ, const png_xy *xy)
1468    if (!png_muldiv(&XYZ->red_X, xy->redx, PNG_FP_1, red_inverse)) return 1;
1469    if (!png_muldiv(&XYZ->red_Y, xy->redy, PNG_FP_1, red_inverse)) return 1;
1470    if (!png_muldiv(&XYZ->red_Z, PNG_FP_1 - xy->redx - xy->redy, PNG_FP_1,
1474    if (!png_muldiv(&XYZ->green_X, xy->greenx, PNG_FP_1, green_inverse))
1476    if (!png_muldiv(&XYZ->green_Y, xy->greeny, PNG_FP_1, green_inverse))
1478    if (!png_muldiv(&XYZ->green_Z, PNG_FP_1 - xy->greenx - xy->greeny, PNG_FP_1,
1482    if (!png_muldiv(&XYZ->blue_X, xy->bluex, blue_scale, PNG_FP_1)) return 1;
1483    if (!png_muldiv(&XYZ->blue_Y, xy->bluey, blue_scale, PNG_FP_1)) return 1;
1484    if (!png_muldiv(&XYZ->blue_Z, PNG_FP_1 - xy->bluex - xy->bluey, blue_scale,
1492 png_XYZ_normalize(png_XYZ *XYZ)
1496    if (XYZ->red_Y < 0 || XYZ->green_Y < 0 || XYZ->blue_Y < 0 ||
1497       XYZ->red_X < 0 || XYZ->green_X < 0 || XYZ->blue_X < 0 ||
1498       XYZ->red_Z < 0 || XYZ->green_Z < 0 || XYZ->blue_Z < 0)
1506    Y = XYZ->red_Y;
1507    if (0x7fffffff - Y < XYZ->green_X) return 1;
1508    Y += XYZ->green_Y;
1509    if (0x7fffffff - Y < XYZ->blue_X) return 1;
1510    Y += XYZ->blue_Y;
1514       if (!png_muldiv(&XYZ->red_X, XYZ->red_X, PNG_FP_1, Y)) return 1;
1515       if (!png_muldiv(&XYZ->red_Y, XYZ->red_Y, PNG_FP_1, Y)) return 1;
1516       if (!png_muldiv(&XYZ->red_Z, XYZ->red_Z, PNG_FP_1, Y)) return 1;
1518       if (!png_muldiv(&XYZ->green_X, XYZ->green_X, PNG_FP_1, Y)) return 1;
1519       if (!png_muldiv(&XYZ->green_Y, XYZ->green_Y, PNG_FP_1, Y)) return 1;
1520       if (!png_muldiv(&XYZ->green_Z, XYZ->green_Z, PNG_FP_1, Y)) return 1;
1522       if (!png_muldiv(&XYZ->blue_X, XYZ->blue_X, PNG_FP_1, Y)) return 1;
1523       if (!png_muldiv(&XYZ->blue_Y, XYZ->blue_Y, PNG_FP_1, Y)) return 1;
1524       if (!png_muldiv(&XYZ->blue_Z, XYZ->blue_Z, PNG_FP_1, Y)) return 1;
1546  * condition (where the determinant of the matrix to solve for XYZ ends up zero
1551  * check is to round-trip xy -> XYZ -> xy and then check that the result is
1555 png_colorspace_check_xy(png_XYZ *XYZ, const png_xy *xy)
1560    /* As a side-effect this routine also returns the XYZ endpoints. */
1561    result = png_XYZ_from_xy(XYZ, xy);
1564    result = png_xy_from_XYZ(&xy_test, XYZ);
1575 /* This is the check going the other way.  The XYZ is modified to normalize it
1579 png_colorspace_check_XYZ(png_xy *xy, png_XYZ *XYZ)
1584    result = png_XYZ_normalize(XYZ);
1587    result = png_xy_from_XYZ(xy, XYZ);
1590    XYZtemp = *XYZ;
1606    png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
1634    colorspace->end_points_XYZ = *XYZ;
1660    png_XYZ XYZ;
1662    switch (png_colorspace_check_xy(&XYZ, xy))
1665          return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ,
1669          /* We can't invert the chromaticities so we can't produce value XYZ
1692    png_XYZ XYZ = *XYZ_in;
1695    switch (png_colorspace_check_XYZ(&xy, &XYZ))
1698          return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ,
1814     * These XYZ values, which are accurate to 5dp, produce rgb to gray
1820    static const png_XYZ sRGB_XYZ = /* D65 XYZ (*not* the D50 adapted values!) */
1895  * is XYZ(0.9642,1.0,0.8249), which scales to:
1994     * data to XYZ or L*a*b (according to which PCS the profile uses) and this
2078     * either in XYZ or Lab.
2083       case 0x58595A20: /* 'XYZ ' */
2418          png_error(png_ptr, "internal error handling cHRM->XYZ");