diff options
Diffstat (limited to '')
| -rw-r--r-- | src/libclut.c | 775 |
1 files changed, 0 insertions, 775 deletions
diff --git a/src/libclut.c b/src/libclut.c deleted file mode 100644 index 934ed88..0000000 --- a/src/libclut.c +++ /dev/null @@ -1,775 +0,0 @@ -/** - * Copyright © 2016 Mattias Andrée <maandree@member.fsf.org> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include "libclut.h" - -#include <errno.h> - - - -/** - * Convert one component from [0, 1] linear sRGB to [0, 1] sRGB. - * - * @param c The linear sRGB value. - * @return Corresponding sRGB value. - */ -double (libclut_model_linear_to_standard1)(double c) -{ - return libclut_model_linear_to_standard1(c); -} - - -/** - * Convert [0, 1] linear sRGB to [0, 1] sRGB. - * - * @param r Pointer to the linear red component, - * and output parameter for the red component. - * @param g Pointer to the linear green component, - * and output parameter for the green component. - * @param b Pointer to the linear blue component, - * and output parameter for the blue component. - */ -void (libclut_model_linear_to_standard)(double* r, double* g, double* b) -{ - libclut_model_linear_to_standard(r, g, b); -} - - -/** - * Convert one component from [0, 1] sRGB to [0, 1] linear sRGB. - * - * @param c The sRGB value. - * @return Corresponding linear sRGB value. - */ -double (libclut_model_standard_to_linear1)(double c) -{ - return libclut_model_standard_to_linear1(c); -} - - -/** - * Convert [0, 1] sRGB to [0, 1] linear sRGB. - * - * @param r Pointer to the red component, and output - * parameter for the linear red component. - * @param g Pointer to the green component, and output - * parameter for the linear green component. - * @param b Pointer to the blue component, and output - * parameter for the linear blue component. - */ -void (libclut_model_standard_to_linear)(double* r, double* g, double* b) -{ - libclut_model_standard_to_linear(r, g, b); -} - - -/** - * Convert CIE xyY to CIE XYZ. - * - * @param x The x parameter. - * @param y The y parameter. - * @param Y The Y parameter. This is also the Y (middle) parameter for the CIE XYZ colour. - * @param X Output parameter for the X parameter. - * @param Z Output parameter for the Z parameter. - */ -void (libclut_model_ciexyy_to_ciexyz)(double x, double y, double Y, double* X, double* Z) -{ - libclut_model_ciexyy_to_ciexyz(x, y, Y, X, Z); -} - - -/** - * Convert CIE XYZ to CIE xyY. - * - * @param X The X parameter. - * @param Y The Y parameter. This is also the Y (last) parameter for the CIE xyY colour. - * @param Z The Z parameter. - * @param x Output parameter for the x parameter. - * @param y Output parameter for the y parameter. - */ -void (libclut_model_ciexyz_to_ciexyy)(double X, double Y, double Z, double* x, double* y) -{ - libclut_model_ciexyz_to_ciexyy(X, Y, Z, x, y); -} - - -/** - * Convert CIE XYZ to [0, 1] linear sRGB. - * - * @param X The X parameter. - * @param Y The Y parameter. - * @param Z The Z parameter. - * @param r Output parameter for the red component. - * @param g Output parameter for the green component. - * @param b Output parameter for the blue component. - */ -void (libclut_model_ciexyz_to_linear)(double X, double Y, double Z, double* r, double* g, double* b) -{ - libclut_model_ciexyz_to_linear(X, Y, Z, r, g, b); -} - - -/** - * Convert [0, 1] linear sRGB to CIE XYZ. - * - * @param r The red component. - * @param g The green component. - * @param b The blue component. - * @param X Output parameter for the X parameter. - * @param Y Output parameter for the Y parameter. - * @param Z Output parameter for the Z parameter. - */ -void (libclut_model_linear_to_ciexyz)(double r, double g, double b, double* X, double* Y, double* Z) -{ - libclut_model_linear_to_ciexyz(r, g, b, X, Y, Z); -} - - -/** - * Convert [0, 1] linear sRGB to CIE xyY. - * - * @param r The red component. - * @param g The green component. - * @param b The blue component. - * @param x Output parameter for the x parameter. - * @param y Output parameter for the y parameter. - * @param Y Output parameter for the Y parameter. - */ -void (libclut_model_srgb_to_ciexyy)(double r, double g, double b, double* x, double* y, double* Y) -{ - libclut_model_srgb_to_ciexyy(r, g, b, x, y, Y); -} - - -/** - * Convert CIE xyY to [0, 1] sRGB. - * - * @param x The x parameter. - * @param y The y parameter. - * @param Y The Y parameter. - * @param r Output parameter for the red component. - * @param g Output parameter for the green component. - * @param b Output parameter for the blue component. - */ -void (libclut_model_ciexyy_to_srgb)(double x, double y, double Y, double* r, double* g, double* b) -{ - libclut_model_ciexyy_to_srgb(x, y, Y, r, g, b); -} - - -/** - * Convert from CIE XYZ to CIE L*a*b*. - * - * @param X The X parameter. - * @param Y The Y parameter. - * @param Z The Z parameter. - * @param L Output parameter for the L* component. - * @param a Output parameter for the a* component. - * @param b Output parameter for the b* component. - */ -void (libclut_model_ciexyz_to_cielab)(double X, double Y, double Z, double* L, double* a, double* b) -{ - libclut_model_ciexyz_to_cielab(X, Y, Z, L, a, b); -} - - -/** - * Convert from CIE L*a*b* to CIE XYZ. - * - * @param L The L* component. - * @param a The a* component. - * @param b The b* component. - * @param X Output parameter for the X parameter. - * @param Y Output parameter for the Y parameter. - * @param Z Output parameter for the Z parameter. - */ -void (libclut_model_cielab_to_ciexyz)(double L, double a, double b, double* X, double* Y, double* Z) -{ - libclut_model_cielab_to_ciexyz(L, a, b, X, Y, Z); -} - - -/** - * Convert from CIE XYZ to CIE L*u*v*. - * - * @param X The X parameter. - * @param Y The Y parameter. - * @param Z The Z parameter. - * @param Xn The X component of the specified white object (white point). - * @param Yn The Y component of the specified white object (white point). - * @param Zn The Z component of the specified white object (white point). - * @param L Output parameter for the L* component. - * @param u Output parameter for the u* component. - * @param v Output parameter for the v* component. - */ -void (libclut_model_ciexyz_to_cieluv)(double X, double Y, double Z, double Xn, double Yn, double Zn, - double* L, double* u, double* v) -{ - libclut_model_ciexyz_to_cieluv(X, Y, Z, Xn, Yn, Zn, L, u, v); -} - - -/** - * Convert from CIE L*u*v* to CIE XYZ. - * - * @param L The L* component. - * @param u The u* component. - * @param v The v* component. - * @param Xn The X component of the specified white object (white point). - * @param Yn The Y component of the specified white object (white point). - * @param Zn The Z component of the specified white object (white point). - * @param X Output parameter for the X parameter. - * @param Y Output parameter for the Y parameter. - * @param Z Output parameter for the Z parameter. - */ -void (libclut_model_cieluv_to_ciexyz)(double L, double u, double v, double Xn, double Yn, double Zn, - double* X, double* Y, double* Z) -{ - libclut_model_cieluv_to_ciexyz(L, u, v, Xn, Yn, Zn, X, Y, Z); -} - - -/** - * Convert from CIELCh to CIE L*u*v*. - * - * @param L The L* component. - * @param C The C*_uv component. - * @param h The h_uv component. - * @param u Output parameter for the u* parameter. - * @param v Output parameter for the v* parameter. - */ -void (libclut_model_cielch_to_cieluv)(double C, double h, double* u, double* v) -{ - libclut_model_cielch_to_cieluv(C, h, u, v); -} - - -/** - * Convert from CIE L*u*v* to CIELCh. - * - * @param L The L* component. - * @param u The u* component. - * @param v The v* component. - * @param C Output parameter for the C*_uv parameter. - * @param h Output parameter for the h_uv parameter. - */ -void (libclut_model_cieluv_to_cielch)(double u, double v, double* C, double* h) -{ - libclut_model_cieluv_to_cielch(u, v, C, h); -} - - -/** - * Convert from sRGB to YIQ. - * - * @param r The R component. - * @param g The G component. - * @param b The B component. - * @param y Output parameter for the Y parameter. - * @param i Output parameter for the I parameter. - * @param q Output parameter for the Q parameter. - */ -void (libclut_model_srgb_to_yiq)(double r, double g, double b, double* y, double* i, double* q) -{ - libclut_model_srgb_to_yiq(r, g, b, y, i, q); -} - - -/** - * Convert from YIQ to sRGB. - * - * @param y The Y component. - * @param i The I component. - * @param q The Q component. - * @param r Output parameter for the R parameter. - * @param g Output parameter for the G parameter. - * @param b Output parameter for the B parameter. - */ -void (libclut_model_yiq_to_srgb)(double y, double i, double q, double* r, double* g, double* b) -{ - libclut_model_yiq_to_srgb(y, i, q, r, g, b); -} - - -/** - * Convert from sRGB to YDbDr. - * - * @param r The R component. - * @param g The G component. - * @param b The B component. - * @param y Output parameter for the Y parameter. - * @param db Output parameter for the Db parameter. - * @param dr Output parameter for the Dr parameter. - */ -void (libclut_model_srgb_to_ydbdr)(double r, double g, double b, double* y, double* db, double* dr) -{ - libclut_model_srgb_to_ydbdr(r, g, b, y, db, dr); -} - - -/** - * Convert from YDbDr to sRGB. - * - * @param y The Y component. - * @param db The Db component. - * @param dr The Dr component. - * @param r Output parameter for the R parameter. - * @param g Output parameter for the G parameter. - * @param b Output parameter for the B parameter. - */ -void (libclut_model_ydbdr_to_srgb)(double y, double db, double dr, double* r, double* g, double* b) -{ - libclut_model_ydbdr_to_srgb(y, db, dr, r, g, b); -} - -/** - * Convert from YUV to YDbDr. - * - * @param u The U component. - * @param v The V component. - * @param db Output parameter for the Db parameter. - * @param dr Output parameter for the Dr parameter. - */ -void (libclut_model_yuv_to_ydbdr)(double u, double v, double* db, double* dr) -{ - libclut_model_yuv_to_ydbdr(u, v, db, dr); -} - - -/** - * Convert from YDbDr to YUV. - * - * @param db The Db component. - * @param dr The Dr component. - * @param u Output parameter for the U parameter. - * @param v Output parameter for the V parameter. - */ -void (libclut_model_ydbdr_to_yuv)(double db, double dr, double* u, double* v) -{ - libclut_model_ydbdr_to_yuv(db, dr, u, v); -} - - -/** - * Convert from sRGB to YPbPr. - * - * @param r The R component. - * @param g The G component. - * @param b The B component. - * @param y Output parameter for the Y parameter. - * @param pb Output parameter for the Pb parameter. - * @param pr Output parameter for the Pr parameter. - */ -void (libclut_model_srgb_to_ypbpr)(double r, double g, double b, double* y, double* pb, double* pr) -{ - libclut_model_srgb_to_ypbpr(r, g, b, y, pb, pr); -} - - -/** - * Convert from YPbPr to sRGB. - * - * @param y The Y component. - * @param pb The Pb component. - * @param pr The Pr component. - * @param r Output parameter for the R parameter. - * @param g Output parameter for the G parameter. - * @param b Output parameter for the B parameter. - */ -void (libclut_model_ypbpr_to_srgb)(double y, double pb, double pr, double* r, double* g, double* b) -{ - libclut_model_ypbpr_to_srgb(y, pb, pr, r, g, b); -} - - -/** - * Convert from sRGB to YCgCo. - * - * @param r The R component. - * @param g The G component. - * @param b The B component. - * @param y Output parameter for the Y parameter. - * @param cg Output parameter for the Cg parameter. - * @param co Output parameter for the Co parameter. - */ -void (libclut_model_srgb_to_ycgco)(double r, double g, double b, double* y, double* cg, double* co) -{ - libclut_model_srgb_to_ycgco(r, g, b, y, cg, co); -} - - -/** - * Convert from YCgCo to sRGB. - * - * @param y The Y component. - * @param cg The Cg component. - * @param co The Co component. - * @param r Output parameter for the R parameter. - * @param g Output parameter for the G parameter. - * @param b Output parameter for the B parameter. - */ -void (libclut_model_ycgco_to_srgb)(double y, double cg, double co, double* r, double* g, double* b) -{ - libclut_model_ycgco_to_srgb(y, cg, co, r, g, b); -} - - -/** - * Convert from CIE 1960 UCS to CIE XYZ. - * - * @param u The u component. - * @param v The v component. - * @param Y The Y component. - * @param x Output parameter for the X parameter. - * @param y Output parameter for the Y parameter. - * @param z Output parameter for the Z parameter. - */ -void (libclut_model_cie_1960_ucs_to_ciexyz)(double u, double v, double Y, double* x, double* y, double* z) -{ - libclut_model_cie_1960_ucs_to_ciexyz(u, v, Y, x, y, z); -} - - -/** - * Convert from CIE XYZ to CIE 1960 UCS. - * - * @param x The X component. - * @param y The Y component. - * @param z The Z component. - * @param u Output parameter for the u parameter. - * @param v Output parameter for the v parameter. - * @param Y Output parameter for the Y parameter. - */ -void (libclut_model_ciexyz_to_cie_1960_ucs)(double x, double y, double z, double* u, double* v, double* Y) -{ - libclut_model_ciexyz_to_cie_1960_ucs(x, y, z, u, v, Y); -} - - -/** - * Convert from CIEUVW to CIE 1960 UCS. - * - * @param U The U* component. - * @param V The V* component. - * @param W The W* component. - * @param u0 The u parameter for the white point. - * @param v0 The v parameter for the white point. - * @param u Output parameter for the u parameter. - * @param v Output parameter for the v parameter. - * @param Y Output parameter for the Y parameter. - */ -void (libclut_model_cieuvw_to_cie_1960_ucs)(double U, double V, double W, double u0, double v0, - double* u, double* v, double* Y) -{ - libclut_model_cieuvw_to_cie_1960_ucs(U, V, W, u0, v0, u, v, Y); -} - - -/** - * Convert from CIE 1960 UCS to CIEUVW. - * - * Requires linking with `-lm`. - * - * @param u The u component. - * @param v The v component. - * @param Y The Y component. - * @param u0 The u parameter for the white point. - * @param v0 The v parameter for the white point. - * @param U Output parameter for the U* parameter. - * @param V Output parameter for the V* parameter. - * @param W Output parameter for the W* parameter. - */ -void (libclut_model_cie_1960_ucs_to_cieuvw)(double u, double v, double Y, double u0, double v0, - double* U, double* V, double* W) -{ - libclut_model_cie_1960_ucs_to_cieuvw(u, v, Y, u0, v0, U, V, W); -} - - - -/** - * Divide all values in a row by a divisor. - * - * @param m The first part of the row. - * @param a The second part of the row. - * @param d The divisor. - */ -static void divrow(double m[3], double a[3], double d) -{ - m[0] /= d, m[1] /= d, m[2] /= d; - a[0] /= d, a[1] /= d, a[2] /= d; -} - -/** - * Subtract all values in a row by corresponding value - * in another row multiplied by a common value. - * - * @param a1 The first part of the minuend/difference row. - * @param a2 The second part of the minuend/difference row. - * @param b1 The first part of the subtrahend row. - * @param b2 The second part of the subtrahend row. - * @param m The multiplier. - */ -static void subrow(double a1[3], double a2[3], double b1[3], double b2[3], double m) -{ - a1[0] -= b1[0] * m, a1[1] -= b1[1] * m, a1[2] -= b1[2] * m; - a2[0] -= b2[0] * m, a2[1] -= b2[1] * m, a2[2] -= b2[2] * m; -} - - -/** - * Invert a matrix. - * - * @param M The matrix to invert, will be modified to an - * identity matrix, possibly with reordered rows. - * @param A The inversion of M (as input). - * @return 1 on success, 0 if the matrix is not invertible. - */ -static int invert(libclut_colour_space_conversion_matrix_t M, libclut_colour_space_conversion_matrix_t A) -{ - int r0 = 0, r1 = 1, r2 = 2, t, swapped = 0; - libclut_colour_space_conversion_matrix_t T; - - A[0][0] = A[1][1] = A[2][2] = 1; - A[0][1] = A[0][2] = A[1][0] = A[1][2] = A[2][0] = A[2][1] = 0; - - if (libclut_0__(M[r0][0])) - { - if (libclut_0__(M[r1][0])) - { - if (libclut_0__(M[r2][0])) - return 0; - t = r0, r0 = r2, r2 = t; - } - else - t = r0, r0 = r1, r1 = t; - swapped = 1; - } - - divrow(M[r0], A[r0], M[r0][0]); - subrow(M[r1], A[r1], M[r0], A[r0], M[r1][0]); - subrow(M[r2], A[r2], M[r0], A[r0], M[r2][0]); - - if (libclut_0__(M[r1][1])) - { - if (libclut_0__(M[r2][1])) - return 0; - t = r1, r1 = r2, r2 = t; - swapped = 1; - } - - divrow(M[r1], A[r1], M[r1][1]); - subrow(M[r2], A[r2], M[r1], A[r1], M[r2][1]); - - if (libclut_0__(M[r2][2])) - return 0; - - divrow(M[r2], A[r2], M[r2][2]); - - subrow(M[r1], A[r1], M[r2], A[r2], M[r1][2]); - subrow(M[r0], A[r0], M[r2], A[r2], M[r0][2]); - - subrow(M[r0], A[r0], M[r1], A[r1], M[r0][1]); - - if (swapped) - { - memcpy(T, A, sizeof(T)); - memcpy(A[0], T[r0], sizeof(*T)); - memcpy(A[1], T[r1], sizeof(*T)); - memcpy(A[2], T[r2], sizeof(*T)); - } - - return 1; -} - - -/** - * Create an RGB to CIE XYZ conversion matrix. - * - * @param cs The colour space. - * @param M The output matrix. - * @return Zero on success, -1 on error. - * - * @throws EINVAL The colour space cannot be used. - */ -static int get_conversion_matrix(const libclut_rgb_colour_space_t* cs, libclut_colour_space_conversion_matrix_t M) -{ -#define XYY_TO_XYZ(x, y, Y, Xp, Yp, Zp) \ - (libclut_0__(Y)) ? \ - (*(Xp) = *(Zp) = *(Yp) = (Y)) : \ - (*(Xp) = (x) * (Y) / (y), \ - *(Yp) = (Y), \ - *(Zp) = (1 - (x) - (y)) * (Y) / (y)) - - double Xr, Yr, Zr, Xg, Yg, Zg, Xb, Yb, Zb, Xw, Yw, Zw, Sr, Sg, Sb; - libclut_colour_space_conversion_matrix_t M2; - - XYY_TO_XYZ(cs->red_x, cs->red_y, 1, &Xr, &Yr, &Zr); - XYY_TO_XYZ(cs->green_x, cs->green_y, 1, &Xg, &Yg, &Zg); - XYY_TO_XYZ(cs->blue_x, cs->blue_y, 1, &Xb, &Yb, &Zb); - XYY_TO_XYZ(cs->white_x, cs->white_y, cs->white_Y, &Xw, &Yw, &Zw); - - M2[0][0] = Xr, M2[0][1] = Xg, M2[0][2] = Xb; - M2[1][0] = Yr, M2[1][1] = Yg, M2[1][2] = Yb; - M2[2][0] = Zr, M2[2][1] = Zg, M2[2][2] = Zb; - - if (!invert(M2, M)) - return errno = EINVAL, -1; - - Sr = M[0][0] * Xw + M[0][1] * Yw + M[0][2] * Zw; - Sg = M[1][0] * Xw + M[1][1] * Yw + M[1][2] * Zw; - Sb = M[2][0] * Xw + M[2][1] * Yw + M[2][2] * Zw; - - M[0][0] = Sr * Xr, M[0][1] = Sg * Xg, M[0][2] = Sb * Xb; - M[1][0] = Sr * Yr, M[1][1] = Sg * Yg, M[1][2] = Sb * Yb; - M[2][0] = Sr * Zr, M[2][1] = Sg * Zg, M[2][2] = Sb * Zb; - - return 0; - -#undef XYY_TO_XYZ -} - - -/** - * Create a matrix for converting values between - * two RGB colour spaces. - * - * @param from The input colour space, the Y-component is only necessary - * for the white point, `NULL` for CIE XYZ. - * @param to The output colour space, the Y-component is only necessary - * for the white point, `NULL` for CIE XYZ. - * @param M Output matrix for conversion from `from` to `to`. - * @param Minv Output matrix for conversion from `to` to `from`, may be `NULL`. - * @return Zero on success, -1 on error. - * - * @throws EINVAL The colour space cannot be used. - */ -int libclut_model_get_rgb_conversion_matrix(const libclut_rgb_colour_space_t* from, - const libclut_rgb_colour_space_t* to, - libclut_colour_space_conversion_matrix_t M, - libclut_colour_space_conversion_matrix_t Minv) -{ - libclut_colour_space_conversion_matrix_t A, B; - - if (from != NULL) - { - if (get_conversion_matrix(from, A)) - return -1; - } - else - { - A[0][0] = A[1][1] = A[2][2] = 1; - A[0][1] = A[1][0] = A[2][0] = 0; - A[0][2] = A[1][2] = A[2][1] = 0; - } - - if (to != NULL) - { - if (get_conversion_matrix(to, M)) - return -1; - if (!invert(M, B)) - return errno = EINVAL, -1; - - if (from != NULL) - { - M[0][0] = B[0][0] * A[0][0] + B[0][1] * A[1][0] + B[0][2] * A[2][0]; - M[0][1] = B[0][0] * A[0][1] + B[0][1] * A[1][1] + B[0][2] * A[2][1]; - M[0][2] = B[0][0] * A[0][2] + B[0][1] * A[1][2] + B[0][2] * A[2][2]; - - M[1][0] = B[1][0] * A[0][0] + B[1][1] * A[1][0] + B[1][2] * A[2][0]; - M[1][1] = B[1][0] * A[0][1] + B[1][1] * A[1][1] + B[1][2] * A[2][1]; - M[1][2] = B[1][0] * A[0][2] + B[1][1] * A[1][2] + B[1][2] * A[2][2]; - - M[2][0] = B[2][0] * A[0][0] + B[2][1] * A[1][0] + B[2][2] * A[2][0]; - M[2][1] = B[2][0] * A[0][1] + B[2][1] * A[1][1] + B[2][2] * A[2][1]; - M[2][2] = B[2][0] * A[0][2] + B[2][1] * A[1][2] + B[2][2] * A[2][2]; - } - else - memcpy(M, B, sizeof(B)); - } - else - memcpy(M, A, sizeof(A)); - - if (Minv != NULL) - { - memcpy(A, M, sizeof(A)); - if (!invert(A, Minv)) - return errno = EINVAL, -1; - } - - return 0; -} - - -/** - * Convert an RGB colour into another RGB colour space. - * - * Both RGB colour spaces must have same gamma functions as sRGB. - * - * @param r The red component of the colour to convert. - * @param g The green component of the colour to convert. - * @param b The blue component of the colour to convert. - * @param M Conversion matrix, create with `libclut_model_get_rgb_conversion_matrix`. - * @param out_r Output parameter for the new red component. - * @param out_g Output parameter for the new green component. - * @param out_b Output parameter for the new blue component. - */ -void (libclut_model_convert_rgb)(double r, double g, double b, libclut_colour_space_conversion_matrix_t M, - double* out_r, double* out_g, double* out_b) -{ - libclut_model_convert_rgb(r, g, b, M, out_r, out_g, out_b); -} - - -/** - * Convert an RGB colour of a custom RGB colour space to CIE XYZ. - * - * The RGB colour space must have same gamma functions as sRGB. - * - * @param r The red component. - * @param g The green component. - * @param b The blue component. - * @param M Conversion matrix, create with `libclut_model_get_rgb_conversion_matrix`. - * @param x Output parameter for the X component. - * @param y Output parameter for the Y component. - * @param z Output parameter for the Z component. - */ -void (libclut_model_rgb_to_ciexyz)(double r, double g, double b, libclut_colour_space_conversion_matrix_t M, - double* x, double* y, double* z) -{ - libclut_model_rgb_to_ciexyz(r, g, b, M, x, y, z); -} - - -/** - * Convert a CIE XYZ colour to a custom RGB colour space. - * - * The RGB colour space must have same gamma functions as sRGB. - * - * @param x The X component. - * @param y The Y component. - * @param z The Z component. - * @param M Conversion matrix, create with `libclut_model_get_rgb_conversion_matrix`. - * @param r Output parameter for the red component. - * @param g Output parameter for the green component - * @param b Output parameter for the blue component. - */ -void (libclut_model_ciexyz_to_rgb)(double x, double y, double z, libclut_colour_space_conversion_matrix_t M, - double* r, double* g, double* b) -{ - libclut_model_ciexyz_to_rgb(x, y, z, M, r, g, b); -} - |