add circuitpython code

1 files changed, 56 insertions, 0 deletions

diff --git a/circuitpython/shared-module/displayio/ColorConverter.h b/circuitpython/shared-module/displayio/ColorConverter.h
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+++ b/circuitpython/shared-module/displayio/ColorConverter.h
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H
+#define MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "py/obj.h"
+#include "shared-module/displayio/Palette.h"
+
+typedef struct displayio_colorconverter {
+    mp_obj_base_t base;
+    bool dither;
+    uint8_t input_colorspace;
+    uint32_t transparent_color;
+} displayio_colorconverter_t;
+
+bool displayio_colorconverter_needs_refresh(displayio_colorconverter_t *self);
+void displayio_colorconverter_finish_refresh(displayio_colorconverter_t *self);
+void displayio_colorconverter_convert(displayio_colorconverter_t *self, const _displayio_colorspace_t *colorspace, const displayio_input_pixel_t *input_pixel, displayio_output_pixel_t *output_color);
+
+uint32_t displayio_colorconverter_dither_noise_1(uint32_t n);
+uint32_t displayio_colorconverter_dither_noise_2(uint32_t x, uint32_t y);
+
+uint16_t displayio_colorconverter_compute_rgb565(uint32_t color_rgb888);
+uint8_t displayio_colorconverter_compute_luma(uint32_t color_rgb888);
+uint8_t displayio_colorconverter_compute_chroma(uint32_t color_rgb888);
+uint8_t displayio_colorconverter_compute_hue(uint32_t color_rgb888);
+void displayio_colorconverter_compute_tricolor(const _displayio_colorspace_t *colorspace, uint8_t pixel_hue, uint32_t *color);
+
+#endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H