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authorMattias Andrée <maandree@kth.se>2017-06-10 13:50:13 +0200
committerMattias Andrée <maandree@kth.se>2017-06-10 13:59:53 +0200
commit769d12c6be9e4be2ec776a7f6e69dedefebd9cb2 (patch)
tree21186cd204fb87f353877e495dca56645235275e /en_masse-template.c
parentAdd libcolour_get_rgb_colour_space.3 (diff)
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Add libcolour_convert_en_masse
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'en_masse-template.c')
-rw-r--r--en_masse-template.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/en_masse-template.c b/en_masse-template.c
new file mode 100644
index 0000000..d823026
--- /dev/null
+++ b/en_masse-template.c
@@ -0,0 +1,122 @@
+/* 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;
+ TYPE *out1, *out2, *out3;
+ size_t width;
+
+ 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) {
+ in1 = va_arg(args, TYPE *);
+ in2 = in1 + 2;
+ in3 = in1 + 3;
+ in1 = in1 + 1;
+ width = 4;
+ } else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_LAST) {
+ in1 = va_arg(args, TYPE *);
+ in2 = in1 + 1;
+ in3 = in1 + 2;
+ 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;
+ } 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) {
+ out1 = va_arg(args, TYPE *);
+ out2 = out1 + 2;
+ out3 = out1 + 3;
+ out1 = out1 + 1;
+ } else if (alpha_mode == LIBCOLOUR_CONVERT_EN_MASSE_ALPHA_LAST) {
+ out1 = va_arg(args, TYPE *);
+ out2 = out1 + 1;
+ out3 = out1 + 2;
+ } 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));
+ 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));
+ LIST_MODELS(X)
+#undef X
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+ while (n--) {
+ tfrom.rgb.R = in1[n * width];
+ tfrom.rgb.G = in2[n * width];
+ tfrom.rgb.B = in3[n * width];
+ libcolour_convert(&tfrom, &tto);
+ out1[n * width] = tto.rgb.R;
+ out2[n * width] = tto.rgb.G;
+ out3[n * width] = tto.rgb.B;
+ }
+
+ (void) on_cpu;
+ return 0;
+}