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/*
* 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);
}
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