Add libfonts_get_subpixel_expansion

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 52 insertions, 0 deletions

diff --git a/libfonts_get_subpixel_expansion.c b/libfonts_get_subpixel_expansion.c
new file mode 100644
index 0000000..99f72ba
--- /dev/null
+++ b/libfonts_get_subpixel_expansion.c
@@ -0,0 +1,52 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+int
+libfonts_get_subpixel_expansion(enum libfonts_subpixel_order_class layout, size_t *restrict widthmulp, size_t *restrict heightmulp)
+{
+	size_t w, h;
+
+	if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_123) {
+		w = 3;
+		h = 1;
+	} else if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_1_2_3) {
+		w = 1;
+		h = 3;
+	} else if (layout >= LIBFONTS_SUBPIXEL_ORDER_CLASS_11_23 &&
+		   layout <= LIBFONTS_SUBPIXEL_ORDER_CLASS_13_12) {
+		w = 2;
+		h = 2;
+	} else if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_11_23 ||
+		   layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_32_11) {
+		w = 2;
+		h = 3;
+	} else if (layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_21_31 ||
+		   layout == LIBFONTS_SUBPIXEL_ORDER_CLASS_BALANCED_13_12) {
+		w = 3;
+		h = 2;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (widthmulp)
+		*widthmulp = w;
+	if (heightmulp)
+		*heightmulp = h;
+	return 0;
+}
+
+
+#else
+
+
+int
+main(void)
+{
+	return 0;
+}
+
+
+#endif