113 lines
4.6 KiB
C
113 lines
4.6 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/displayio/Bitmap.h"
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#include <stdint.h>
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#include "lib/utils/context_manager_helpers.h"
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#include "py/binary.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/util.h"
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#include "supervisor/shared/translate.h"
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//| .. currentmodule:: displayio
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//|
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//| :class:`Bitmap` -- Stores values in a 2D array
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//| ==========================================================================
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//|
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//| Stores values of a certain size in a 2D array
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//|
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//| .. warning:: This will likely be changed before 4.0.0. Consider it very experimental.
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//|
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//| .. class:: Bitmap(width, height, value_count)
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//|
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//| Create a Bitmap object with the given fixed size. Each pixel stores a value that is used to
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//| index into a corresponding palette. This enables differently colored sprites to share the
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//| underlying Bitmap. value_count is used to minimize the memory used to store the Bitmap.
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//|
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//| :param int width: The number of values wide
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//| :param int height: The number of values high
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//| :param int value_count: The number of possible pixel values.
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//|
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STATIC mp_obj_t displayio_bitmap_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *pos_args) {
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mp_arg_check_num(n_args, n_kw, 3, 3, false);
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uint32_t width = mp_obj_get_int(pos_args[0]);
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uint32_t height = mp_obj_get_int(pos_args[1]);
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uint32_t value_count = mp_obj_get_int(pos_args[2]);
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uint32_t power_of_two = 1;
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while (value_count > (1U << power_of_two)) {
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power_of_two <<= 1;
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}
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displayio_bitmap_t *self = m_new_obj(displayio_bitmap_t);
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self->base.type = &displayio_bitmap_type;
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common_hal_displayio_bitmap_construct(self, width, height, power_of_two);
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return MP_OBJ_FROM_PTR(self);
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}
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//| .. method:: _load_row(y, data)
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//|
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//| Loads pre-packed data into the given row.
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//|
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STATIC mp_obj_t displayio_bitmap_obj__load_row(mp_obj_t self_in, mp_obj_t y_in, mp_obj_t data_in) {
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displayio_bitmap_t *self = MP_OBJ_TO_PTR(self_in);
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mp_int_t y;
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if (!mp_obj_get_int_maybe(y_in, &y)) {
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mp_raise_ValueError(translate("y should be an int"));
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}
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mp_buffer_info_t bufinfo;
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if (mp_get_buffer(data_in, &bufinfo, MP_BUFFER_READ)) {
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if (bufinfo.typecode != 'b' && bufinfo.typecode != 'B' && bufinfo.typecode != BYTEARRAY_TYPECODE) {
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mp_raise_ValueError(translate("row buffer must be a bytearray or array of type 'b' or 'B'"));
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}
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uint8_t* buf = bufinfo.buf;
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common_hal_displayio_bitmap_load_row(self, y, buf, bufinfo.len);
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} else {
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mp_raise_TypeError(translate("row data must be a buffer"));
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_3(displayio_bitmap__load_row_obj, displayio_bitmap_obj__load_row);
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STATIC const mp_rom_map_elem_t displayio_bitmap_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR__load_row), MP_ROM_PTR(&displayio_bitmap__load_row_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(displayio_bitmap_locals_dict, displayio_bitmap_locals_dict_table);
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const mp_obj_type_t displayio_bitmap_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Bitmap,
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.make_new = displayio_bitmap_make_new,
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// TODO(tannewt): Implement subscr after slices support start, stop and step tuples.
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// .subscr = displayio_bitmap_subscr,
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.locals_dict = (mp_obj_dict_t*)&displayio_bitmap_locals_dict,
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};
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