/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
enum libfonts_subpixel_order_class
libfonts_get_subpixel_order_class(enum libfonts_subpixel_order order,
enum libfonts_subpixel_colour *cell1p,
enum libfonts_subpixel_colour *cell2p,
enum libfonts_subpixel_colour *cell3p)
{
enum libfonts_subpixel_colour c1, c2, c3;
enum libfonts_subpixel_order_class layout;
unsigned int i; /* RGB, RBG, GRB, GBR, BRG, BGR */
if (order >= LIBFONTS_SUBPIXEL_ORDER_RGB && order <= LIBFONTS_SUBPIXEL_ORDER_G_R_B) {
layout = ((order - LIBFONTS_SUBPIXEL_ORDER_RGB) & 1) + LIBFONTS_SUBPIXEL_ORDER_CLASS_123;
i = (unsigned int)(order - LIBFONTS_SUBPIXEL_ORDER_RGB) / 2;
i = ((unsigned int []){0, 5, 3, 1, 4, 2})[i];
} else if (order >= LIBFONTS_SUBPIXEL_ORDER_RR_GB && order <= LIBFONTS_SUBPIXEL_ORDER_BALANCED_BR_BG) {
layout = ((order - LIBFONTS_SUBPIXEL_ORDER_RR_GB) & 3) + LIBFONTS_SUBPIXEL_ORDER_CLASS_11_23;
if (order >= LIBFONTS_SUBPIXEL_ORDER_BALANCED_RR_GB)
layout += 4;
i = (unsigned int)(order - LIBFONTS_SUBPIXEL_ORDER_RR_GB) / 4 % 6;
} else {
layout = LIBFONTS_SUBPIXEL_ORDER_CLASS_OTHER;
i = 0;
}
c1 = i / 2;
c2 = (i + 1 + i / 3) % 3;
c3 = 3 - c1 - c2;
if (cell1p)
*cell1p = c1;
if (cell2p)
*cell2p = c2;
if (cell3p)
*cell3p = c3;
return layout;
}
#else
int
main(void)
{
enum libfonts_subpixel_colour c1, c2, c3;
#define R LIBFONTS_SUBPIXEL_COLOUR_RED
#define G LIBFONTS_SUBPIXEL_COLOUR_GREEN
#define B LIBFONTS_SUBPIXEL_COLOUR_BLUE
#define T(ORDER, LAYOUT, C1, C2, C3)\
T_(LIBFONTS_SUBPIXEL_ORDER_##ORDER,\
LIBFONTS_SUBPIXEL_ORDER_CLASS_##LAYOUT,\
C1, C2, C3)
#define T_(ORDER, LAYOUT, C1, C2, C3)\
do {\
errno = 0;\
c1 = c2 = c3 = (enum libfonts_subpixel_colour)~0;\
ASSERT(libfonts_get_subpixel_order_class(ORDER, &c1, &c2, &c3) == LAYOUT);\
ASSERT(c1 == C1);\
ASSERT(c2 == C2);\
ASSERT(c3 == C3);\
ASSERT(!errno);\
ASSERT(libfonts_get_subpixel_order_class(ORDER, NULL, &c2, &c3) == LAYOUT);\
ASSERT(c2 == C2);\
ASSERT(c3 == C3);\
ASSERT(!errno);\
ASSERT(libfonts_get_subpixel_order_class(ORDER, &c1, NULL, &c3) == LAYOUT);\
ASSERT(c1 == C1);\
ASSERT(c3 == C3);\
ASSERT(!errno);\
ASSERT(libfonts_get_subpixel_order_class(ORDER, &c1, &c2, NULL) == LAYOUT);\
ASSERT(c1 == C1);\
ASSERT(c2 == C2);\
ASSERT(!errno);\
} while (0)
T(UNKNOWN, OTHER, R, G, B);
T(NONRGB, OTHER, R, G, B);
T(NONLINEAR, OTHER, R, G, B);
T(OTHER, OTHER, R, G, B);
T_((enum libfonts_subpixel_order)~1, LIBFONTS_SUBPIXEL_ORDER_CLASS_OTHER, R, G, B);
T_(9999, LIBFONTS_SUBPIXEL_ORDER_CLASS_OTHER, R, G, B);
T(RGB, 123, R, G, B);
T(R_G_B, 1_2_3, R, G, B);
T(BGR, 123, B, G, R);
T(B_G_R, 1_2_3, B, G, R);
T(GBR, 123, G, B, R);
T(G_B_R, 1_2_3, G, B, R);
T(RBG, 123, R, B, G);
T(R_B_G, 1_2_3, R, B, G);
T(BRG, 123, B, R, G);
T(B_R_G, 1_2_3, B, R, G);
T(GRB, 123, G, R, B);
T(G_R_B, 1_2_3, G, R, B);
T(RR_GB, 11_23, R, G, B);
T(GR_BR, 21_31, R, G, B);
T(BG_RR, 32_11, R, G, B);
T(RB_RG, 13_12, R, G, B);
T(RR_BG, 11_23, R, B, G);
T(BR_GR, 21_31, R, B, G);
T(GB_RR, 32_11, R, B, G);
T(RG_RB, 13_12, R, B, G);
T(GG_RB, 11_23, G, R, B);
T(RG_BG, 21_31, G, R, B);
T(BR_GG, 32_11, G, R, B);
T(GB_GR, 13_12, G, R, B);
T(GG_BR, 11_23, G, B, R);
T(BG_RG, 21_31, G, B, R);
T(RB_GG, 32_11, G, B, R);
T(GR_GB, 13_12, G, B, R);
T(BB_RG, 11_23, B, R, G);
T(RB_GB, 21_31, B, R, G);
T(GR_BB, 32_11, B, R, G);
T(BG_BR, 13_12, B, R, G);
T(BB_GR, 11_23, B, G, R);
T(GB_RB, 21_31, B, G, R);
T(RG_BB, 32_11, B, G, R);
T(BR_BG, 13_12, B, G, R);
T(BALANCED_RR_GB, BALANCED_11_23, R, G, B);
T(BALANCED_GR_BR, BALANCED_21_31, R, G, B);
T(BALANCED_BG_RR, BALANCED_32_11, R, G, B);
T(BALANCED_RB_RG, BALANCED_13_12, R, G, B);
T(BALANCED_RR_BG, BALANCED_11_23, R, B, G);
T(BALANCED_BR_GR, BALANCED_21_31, R, B, G);
T(BALANCED_GB_RR, BALANCED_32_11, R, B, G);
T(BALANCED_RG_RB, BALANCED_13_12, R, B, G);
T(BALANCED_GG_RB, BALANCED_11_23, G, R, B);
T(BALANCED_RG_BG, BALANCED_21_31, G, R, B);
T(BALANCED_BR_GG, BALANCED_32_11, G, R, B);
T(BALANCED_GB_GR, BALANCED_13_12, G, R, B);
T(BALANCED_GG_BR, BALANCED_11_23, G, B, R);
T(BALANCED_BG_RG, BALANCED_21_31, G, B, R);
T(BALANCED_RB_GG, BALANCED_32_11, G, B, R);
T(BALANCED_GR_GB, BALANCED_13_12, G, B, R);
T(BALANCED_BB_RG, BALANCED_11_23, B, R, G);
T(BALANCED_RB_GB, BALANCED_21_31, B, R, G);
T(BALANCED_GR_BB, BALANCED_32_11, B, R, G);
T(BALANCED_BG_BR, BALANCED_13_12, B, R, G);
T(BALANCED_BB_GR, BALANCED_11_23, B, G, R);
T(BALANCED_GB_RB, BALANCED_21_31, B, G, R);
T(BALANCED_RG_BB, BALANCED_32_11, B, G, R);
T(BALANCED_BR_BG, BALANCED_13_12, B, G, R);
return 0;
}
#endif
