1 files changed, 41 insertions, 0 deletions
diff --git a/shared-module/displayio/ColorConverter.c b/shared-module/displayio/ColorConverter.c
new file mode 100644
index 000000000..d20b24c01
--- /dev/null
+++ b/shared-module/displayio/ColorConverter.c
@@ -0,0 +1,41 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-bindings/displayio/ColorConverter.h"
+
+void common_hal_displayio_colorconverter_construct(displayio_colorconverter_t* self) {
+}
+
+bool common_hal_displayio_colorconverter_convert(displayio_colorconverter_t *self, uint32_t input_color, uint16_t* output_color) {
+    // TODO(tannewt): Validate the color input against the input format.
+    uint32_t r5 = (input_color >> 19);
+    uint32_t g6 = (input_color >> 10) & 0x3f;
+    uint32_t b5 = (input_color >> 3) & 0x1f;
+    uint32_t packed = r5 << 11 | g6 << 5 | b5;
+    // swap bytes
+    *output_color = __builtin_bswap16(packed);
+    return true;
+}