summaryrefslogtreecommitdiff
path: root/shared-module/_pixelbuf
diff options
context:
space:
mode:
Diffstat (limited to 'shared-module/_pixelbuf')
-rw-r--r--shared-module/_pixelbuf/PixelBuf.c120
-rw-r--r--shared-module/_pixelbuf/PixelBuf.h50
-rw-r--r--shared-module/_pixelbuf/__init__.c0
3 files changed, 170 insertions, 0 deletions
diff --git a/shared-module/_pixelbuf/PixelBuf.c b/shared-module/_pixelbuf/PixelBuf.c
new file mode 100644
index 000000000..d32697239
--- /dev/null
+++ b/shared-module/_pixelbuf/PixelBuf.c
@@ -0,0 +1,120 @@
+/*
+ * This file is part of the Circuit Python project, https://github.com/adafruit/circuitpython
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Roy Hooper
+ *
+ * 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 "py/obj.h"
+#include "py/objarray.h"
+#include "py/runtime.h"
+#include "PixelBuf.h"
+#include <string.h>
+
+void pixelbuf_set_pixel_int(uint8_t *buf, mp_int_t value, pixelbuf_byteorder_obj_t *byteorder) {
+ buf[byteorder->byteorder.r] = value >> 16 & 0xff;
+ buf[byteorder->byteorder.g] = (value >> 8) & 0xff;
+ buf[byteorder->byteorder.b] = value & 0xff;
+ if (byteorder->bpp == 4 && byteorder->has_white &&
+ (buf[byteorder->byteorder.r] == buf[byteorder->byteorder.g] &&
+ buf[byteorder->byteorder.r] == buf[byteorder->byteorder.b])) {
+ buf[byteorder->byteorder.w] = buf[byteorder->byteorder.r];
+ buf[byteorder->byteorder.r] = buf[byteorder->byteorder.g] = buf[byteorder->byteorder.b] = 0;
+ }
+}
+
+void pixelbuf_set_pixel(uint8_t *buf, uint8_t *rawbuf, float brightness, mp_obj_t *item, pixelbuf_byteorder_obj_t *byteorder, bool dotstar) {
+ if (MP_OBJ_IS_INT(item)) {
+ uint8_t *target = rawbuf ? rawbuf : buf;
+ pixelbuf_set_pixel_int(target, mp_obj_get_int_truncated(item), byteorder);
+ if (dotstar) {
+ buf[0] = DOTSTAR_LED_START_FULL_BRIGHT;
+ if (rawbuf)
+ rawbuf[0] = DOTSTAR_LED_START_FULL_BRIGHT;
+ }
+ if (rawbuf) {
+ buf[byteorder->byteorder.r] = rawbuf[byteorder->byteorder.r] * brightness;
+ buf[byteorder->byteorder.g] = rawbuf[byteorder->byteorder.g] * brightness;
+ buf[byteorder->byteorder.b] = rawbuf[byteorder->byteorder.b] * brightness;
+ } else {
+ buf[byteorder->byteorder.r] *= brightness;
+ buf[byteorder->byteorder.g] *= brightness;
+ buf[byteorder->byteorder.b] *= brightness;
+ }
+ } else {
+ mp_obj_t *items;
+ size_t len;
+ mp_obj_get_array(item, &len, &items);
+ if (len != byteorder->bpp && !dotstar)
+ mp_raise_ValueError_varg(translate("Expected tuple of length %d, got %d"), byteorder->bpp, len);
+
+ buf[byteorder->byteorder.r] = mp_obj_get_int_truncated(items[PIXEL_R]) * brightness;
+ buf[byteorder->byteorder.g] = mp_obj_get_int_truncated(items[PIXEL_G]) * brightness;
+ buf[byteorder->byteorder.b] = mp_obj_get_int_truncated(items[PIXEL_B]) * brightness;
+ if (rawbuf) {
+ rawbuf[byteorder->byteorder.r] = mp_obj_get_int_truncated(items[PIXEL_R]);
+ rawbuf[byteorder->byteorder.g] = mp_obj_get_int_truncated(items[PIXEL_G]);
+ rawbuf[byteorder->byteorder.b] = mp_obj_get_int_truncated(items[PIXEL_B]);
+ }
+ if (len > 3) {
+ if (dotstar) {
+ buf[byteorder->byteorder.w] = DOTSTAR_LED_START | DOTSTAR_BRIGHTNESS(mp_obj_get_float(items[PIXEL_W]));
+ if (rawbuf)
+ rawbuf[byteorder->byteorder.w] = buf[byteorder->byteorder.w];
+ } else {
+ buf[byteorder->byteorder.w] = mp_obj_get_int_truncated(items[PIXEL_W]) * brightness;
+ if (rawbuf)
+ rawbuf[byteorder->byteorder.w] = mp_obj_get_int_truncated(items[PIXEL_W]);
+ }
+ } else if (dotstar) {
+ buf[byteorder->byteorder.w] = DOTSTAR_LED_START_FULL_BRIGHT;
+ if (rawbuf)
+ rawbuf[byteorder->byteorder.w] = DOTSTAR_LED_START_FULL_BRIGHT;
+ }
+ }
+}
+
+mp_obj_t *pixelbuf_get_pixel_array(uint8_t *buf, uint len, pixelbuf_byteorder_obj_t *byteorder, uint8_t step, bool dotstar) {
+ mp_obj_t elems[len];
+ for (uint i = 0; i < len; i++) {
+ elems[i] = pixelbuf_get_pixel(buf + (i * step), byteorder, dotstar);
+ }
+ return mp_obj_new_tuple(len, elems);
+}
+
+mp_obj_t *pixelbuf_get_pixel(uint8_t *buf, pixelbuf_byteorder_obj_t *byteorder, bool dotstar) {
+ mp_obj_t elems[byteorder->bpp];
+
+ elems[0] = mp_obj_new_int(buf[byteorder->byteorder.r]);
+ elems[1] = mp_obj_new_int(buf[byteorder->byteorder.g]);
+ elems[2] = mp_obj_new_int(buf[byteorder->byteorder.b]);
+ if (byteorder->bpp > 3)
+ {
+ if (dotstar)
+ elems[3] = mp_obj_new_float(DOTSTAR_GET_BRIGHTNESS(buf[byteorder->byteorder.w]));
+ else
+ elems[3] = mp_obj_new_int(buf[byteorder->byteorder.w]);
+ }
+
+ return mp_obj_new_tuple(byteorder->bpp, elems);
+}
diff --git a/shared-module/_pixelbuf/PixelBuf.h b/shared-module/_pixelbuf/PixelBuf.h
new file mode 100644
index 000000000..9e115fe0c
--- /dev/null
+++ b/shared-module/_pixelbuf/PixelBuf.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the Circuit Python project, https://github.com/adafruit/circuitpython
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Roy Hooper
+ *
+ * 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 "py/obj.h"
+#include "py/objarray.h"
+#include "../../shared-bindings/_pixelbuf/types.h"
+
+#ifndef PIXELBUF_SHARED_MODULE_H
+#define PIXELBUF_SHARED_MODULE_H
+
+#define PIXEL_R 0
+#define PIXEL_G 1
+#define PIXEL_B 2
+#define PIXEL_W 3
+
+#define DOTSTAR_LED_START 0b11100000
+#define DOTSTAR_BRIGHTNESS(brightness) ((32 - (uint8_t)(32 - brightness * 31)) & 0b00011111)
+#define DOTSTAR_GET_BRIGHTNESS(value) ((value & 0b00011111) / 31.0)
+#define DOTSTAR_LED_START_FULL_BRIGHT 0xFF
+
+void pixelbuf_set_pixel(uint8_t *buf, uint8_t *rawbuf, float brightness, mp_obj_t *item, pixelbuf_byteorder_obj_t *byteorder, bool dotstar);
+mp_obj_t *pixelbuf_get_pixel(uint8_t *buf, pixelbuf_byteorder_obj_t *byteorder, bool dotstar);
+mp_obj_t *pixelbuf_get_pixel_array(uint8_t *buf, uint len, pixelbuf_byteorder_obj_t *byteorder, uint8_t step, bool dotstar);
+void pixelbuf_set_pixel_int(uint8_t *buf, mp_int_t value, pixelbuf_byteorder_obj_t *byteorder);
+
+#endif
diff --git a/shared-module/_pixelbuf/__init__.c b/shared-module/_pixelbuf/__init__.c
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/shared-module/_pixelbuf/__init__.c
generated by cgit v1.2.3 (git 2.39.1) at 2026-08-08 15:11:40 +0000