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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
int
libfonts_unget_subpixel_order_class(enum libfonts_subpixel_order *orderp,
enum libfonts_subpixel_order_class layout,
enum libfonts_subpixel_colour cell1,
enum libfonts_subpixel_colour cell2,
enum libfonts_subpixel_colour cell3)
{
unsigned int i;
if ((uintmax_t)cell1 > 2 ||
(uintmax_t)cell2 > 2 ||
(uintmax_t)cell3 > 2 ||
cell1 == cell2 ||
cell2 == cell3 ||
cell3 == cell1) {
errno = EINVAL;
return -1;
}
if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_OTHER) {
if (orderp)
*orderp = LIBFONTS_SUBPIXEL_ORDER_UNKNOWN;
return 0;
} else if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_123 || layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_1_2_3) {
if (orderp) {
/* RGB, BGR, GBR, RBG, BRG, GRB */
i = (unsigned int)((cell2 + 2) % 3) * 2;
i += (unsigned int)(cell1 < cell3) ^ (cell2 == LIBFONTS_SUBPIXEL_COLOUR_GREEN);
*orderp = (enum libfonts_subpixel_order)(i * 2 +
(layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_1_2_3) +
LIBFONTS_SUBPIXEL_ORDER_RGB);
}
return 1;
} else if (layout >= LIBFONTS_SUBPIXEL_ORDER_CLASS_11_23 && layout <= LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_13_12) {
if (orderp) {
/* RGB, RBG, GRB, GBR, BRG, BGR */
i = (cell1 * 2) + (cell2 > cell3);
*orderp = i * 4 + (layout - LIBFONTS_SUBPIXEL_ORDER_CLASS_11_23) % 4 + LIBFONTS_SUBPIXEL_ORDER_RR_GB;
*orderp += (enum libfonts_subpixel_order)((layout >= LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_11_23) * 24);
}
return 1;
} else {
errno = EINVAL;
return -1;
}
}
#else
int
main(void)
{
#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;\
order = (enum libfonts_subpixel_order)~1;\
ASSERT(libfonts_unget_subpixel_order_class(&order, LAYOUT, C1, C2, C3) == 1);\
ASSERT(order == ORDER);\
ASSERT(!errno);\
ASSERT(libfonts_unget_subpixel_order_class(NULL, LAYOUT, C1, C2, C3) == 1);\
ASSERT(!errno);\
} while (0)
#define TU(LAYOUT, C1, C2, C3)\
TU_(LIBFONTS_SUBPIXEL_ORDER_CLASS_##LAYOUT, C1, C2, C3)
#define TU_(LAYOUT, C1, C2, C3)\
do {\
errno = 0;\
order = (enum libfonts_subpixel_order)~1;\
ASSERT(libfonts_unget_subpixel_order_class(&order, LAYOUT, C1, C2, C3) == 0);\
ASSERT(order == LIBFONTS_SUBPIXEL_ORDER_UNKNOWN);\
ASSERT(!errno);\
ASSERT(libfonts_unget_subpixel_order_class(NULL, LAYOUT, C1, C2, C3) == 0);\
ASSERT(!errno);\
} while (0)
#define TE(LAYOUT, C1, C2, C3)\
TE_(LIBFONTS_SUBPIXEL_ORDER_CLASS_##LAYOUT, C1, C2, C3)
#define TE_(LAYOUT, C1, C2, C3)\
do {\
errno = 0;\
ASSERT(libfonts_unget_subpixel_order_class(&order, LAYOUT, C1, C2, C3) == -1);\
ASSERT(errno == EINVAL);\
errno = 0;\
ASSERT(libfonts_unget_subpixel_order_class(NULL, LAYOUT, C1, C2, C3) == -1);\
ASSERT(errno == EINVAL);\
} while (0)
enum libfonts_subpixel_order order;
TU(OTHER, R, G, B);
TU(OTHER, G, B, R);
TU(OTHER, B, R, G);
TU(OTHER, R, B, G);
TU(OTHER, G, R, B);
TU(OTHER, B, G, R);
TE(OTHER, (enum libfonts_subpixel_colour)~1, G, B);
TE(OTHER, R, (enum libfonts_subpixel_colour)~1, B);
TE(OTHER, R, G, (enum libfonts_subpixel_colour)~1);
TE(OTHER, (enum libfonts_subpixel_colour)~1, (enum libfonts_subpixel_colour)~2, B);
TE(OTHER, 3, G, B);
TE(OTHER, R, 3, B);
TE(OTHER, R, G, 3);
TE(OTHER, R, 3, 4);
TE(123, (enum libfonts_subpixel_colour)~1, G, B);
TE(123, R, (enum libfonts_subpixel_colour)~1, B);
TE(123, R, G, (enum libfonts_subpixel_colour)~1);
TE(123, (enum libfonts_subpixel_colour)~1, (enum libfonts_subpixel_colour)~2, B);
TE(123, 3, G, B);
TE(123, R, 3, B);
TE(123, R, G, 3);
TE(123, R, 3, 4);
TE(123, R, R, G);
TE(123, R, G, R);
TE(123, R, G, G);
TE_((enum libfonts_subpixel_order_class)~1, R, G, B);
TE_(9999, 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
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