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/* See LICENSE file for copyright and license details. */
#if defined(__GNUC__) && !defined(__clang__)
# pragma GCC diagnostic ignored "-Wfloat-equal"
#elif defined(__clang__)
# pragma clang diagnostic ignored "-Wcomma"
# pragma clang diagnostic ignored "-Wfloat-equal"
# pragma clang diagnostic ignored "-Wvla"
# pragma clang diagnostic ignored "-Wtautological-compare"
# pragma clang diagnostic ignored "-Wcovered-switch-default"
# pragma clang diagnostic ignored "-Wfloat-conversion"
# pragma clang diagnostic ignored "-Wconversion"
# pragma clang diagnostic ignored "-Wdouble-promotion"
# pragma clang diagnostic ignored "-Wswitch-enum"
# pragma clang diagnostic ignored "-Wcast-align"
#endif
int
libcolour_convert_en_masse(const libcolour_colour_t *from, const libcolour_colour_t *to,
libcolour_convert_en_masse_mode_t mode, size_t n, ...)
{
libcolour_colour_t tfrom, tto;
libcolour_convert_en_masse_mode_t alpha_mode = mode & 3;
int on_cpu = mode & LIBCOLOUR_CONVERT_EN_MASSE_ON_CPU;
int no_override = mode & LIBCOLOUR_CONVERT_EN_MASSE_NO_OVERRIDE;
va_list args;
TYPE *in1, *in2, *in3, *in_alpha = NULL;
TYPE *out1, *out2, *out3, *out_alpha = NULL;
size_t width, i;
if ((unsigned int)mode > 15U) {
errno = EINVAL;
return -1;
}
if (n < 0) {
errno = EINVAL;
return -1;
}
va_start(args, n);
if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_NO_ALPHA) {
in1 = va_arg(args, TYPE *);
in2 = in1 + 1;
in3 = in1 + 2;
width = 3;
} else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_FIRST) {
in_alpha = va_arg(args, TYPE *);
in1 = in_alpha + 1;
in2 = in_alpha + 2;
in3 = in_alpha + 3;
width = 4;
} else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_LAST) {
in1 = va_arg(args, TYPE *);
in2 = in1 + 1;
in3 = in1 + 2;
in_alpha = in1 + 3;
width = 4;
} else {
in1 = va_arg(args, TYPE *);
in2 = va_arg(args, TYPE *);
in3 = va_arg(args, TYPE *);
width = 1;
}
if (!no_override) {
out1 = in1;
out2 = in2;
out3 = in3;
out_alpha = in_alpha;
} else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_NO_ALPHA) {
out1 = va_arg(args, TYPE *);
out2 = out1 + 1;
out3 = out1 + 2;
} else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_FIRST) {
out_alpha = va_arg(args, TYPE *);
out1 = out_alpha + 1;
out2 = out_alpha + 2;
out3 = out_alpha + 3;
} else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_LAST) {
out1 = va_arg(args, TYPE *);
out2 = out1 + 1;
out3 = out1 + 2;
out_alpha = out1 + 3;
} else {
out1 = va_arg(args, TYPE *);
out2 = va_arg(args, TYPE *);
out3 = va_arg(args, TYPE *);
}
va_end(args);
switch (from->model) {
#define X(C, T, N) case C: memcpy(&tfrom, from, sizeof(T)); break;
LIST_MODELS(X)
#undef X
default:
errno = EINVAL;
return -1;
}
switch (to->model) {
#define X(C, T, N) case C: memcpy(&tto, to, sizeof(T)); break;
LIST_MODELS(X)
#undef X
default:
errno = EINVAL;
return -1;
}
if (in_alpha != out_alpha) {
for (i = 0; i < n; i++) {
*out_alpha = *in_alpha;
in_alpha += width;
out_alpha += width;
}
}
while (n--) {
tfrom.rgb.R = *in1;
tfrom.rgb.G = *in2;
tfrom.rgb.B = *in3;
libcolour_convert(&tfrom, &tto);
*out1 = tto.rgb.R;
*out2 = tto.rgb.G;
*out3 = tto.rgb.B;
in1 += width;
in2 += width;
in3 += width;
out1 += width;
out2 += width;
out3 += width;
}
(void) on_cpu;
return 0;
}
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