304 lines
13 KiB
C
304 lines
13 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) 2021 Mark Komus
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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 "py/obj.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "py/objarray.h"
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#include "shared-bindings/is31fl3741/IS31FL3741.h"
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#include "shared-bindings/is31fl3741/FrameBuffer.h"
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#include "shared-bindings/util.h"
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#include "shared-module/displayio/__init__.h"
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#include "shared-module/framebufferio/__init__.h"
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#include "shared-module/framebufferio/FramebufferDisplay.h"
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#include "shared-bindings/busio/I2C.h"
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//| class IS31FL3741_FrameBuffer:
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//| """Creates an in-memory framebuffer for a IS31FL3741 device."""
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//|
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//| def __init__(
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//| self,
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//| is31: is31fl3741.IS31FL3741,
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//| width: int,
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//| height: int,
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//| mapping: Tuple[int, ...],
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//| *,
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//| framebuffer: Optional[WriteableBuffer] = None,
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//| scale: bool = False,
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//| gamma: bool = False
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//| ) -> None:
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//| """Create a IS31FL3741_FrameBuffer object with the given attributes.
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//|
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//| The framebuffer is in "RGB888" format using 4 bytes per pixel.
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//| Bits 24-31 are ignored. The format is in RGB order.
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//|
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//| If a framebuffer is not passed in, one is allocated and initialized
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//| to all black. In any case, the framebuffer can be retrieved
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//| by passing the Is31fl3741 object to memoryview().
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//|
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//| A Is31fl3741 is often used in conjunction with a
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//| `framebufferio.FramebufferDisplay`.
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//|
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//| :param is31fl3741.IS31FL3741 is31: base IS31FL3741 instance to drive the framebuffer
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//| :param int width: width of the display
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//| :param int height: height of the display
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//| :param Tuple[int, ...] mapping: mapping of matrix locations to LEDs
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//| :param Optional[WriteableBuffer] framebuffer: Optional buffer to hold the display
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//| :param bool scale: if True display is scaled down by 3 when displayed
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//| :param bool gamma: if True apply gamma correction to all LEDs"""
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//| ...
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STATIC mp_obj_t is31fl3741_FrameBuffer_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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enum { ARG_is31, ARG_width, ARG_height, ARG_mapping, ARG_framebuffer, ARG_scale, ARG_gamma };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_is31, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_width, MP_ARG_INT | MP_ARG_REQUIRED },
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{ MP_QSTR_height, MP_ARG_INT | MP_ARG_REQUIRED },
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{ MP_QSTR_mapping, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_framebuffer, MP_ARG_OBJ | MP_ARG_KW_ONLY, { .u_obj = mp_const_none } },
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{ MP_QSTR_scale, MP_ARG_BOOL | MP_ARG_KW_ONLY, { .u_bool = false } },
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{ MP_QSTR_gamma, MP_ARG_BOOL | MP_ARG_KW_ONLY, { .u_bool = false } },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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is31fl3741_FrameBuffer_obj_t *self = &allocate_display_bus_or_raise()->is31fl3741;
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self->base.type = &is31fl3741_FrameBuffer_type;
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if (args[ARG_width].u_int <= 0) {
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mp_raise_ValueError(translate("width must be greater than zero"));
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}
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self->scale = args[ARG_scale].u_bool;
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if (self->scale) {
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if (((args[ARG_height].u_int % 3) != 0) || ((args[ARG_width].u_int % 3) != 0)) {
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mp_raise_ValueError(translate("Scale dimensions must divide by 3"));
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}
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self->scale_width = args[ARG_width].u_int / 3;
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self->scale_height = args[ARG_height].u_int / 3;
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} else {
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self->scale_width = args[ARG_width].u_int;
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self->scale_height = args[ARG_height].u_int;
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}
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self->auto_gamma = args[ARG_gamma].u_bool;
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mp_obj_t framebuffer = args[ARG_framebuffer].u_obj;
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if (framebuffer == mp_const_none) {
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int width = args[ARG_width].u_int;
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int height = args[ARG_height].u_int;
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int bufsize = 4 * width * height;
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framebuffer = mp_obj_new_bytearray_of_zeros(bufsize);
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}
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common_hal_is31fl3741_FrameBuffer_construct(self,
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args[ARG_width].u_int,
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args[ARG_height].u_int,
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framebuffer,
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args[ARG_is31].u_obj,
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args[ARG_mapping].u_obj
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);
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return MP_OBJ_FROM_PTR(self);
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}
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//| def deinit(self) -> None:
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//| """Free the resources associated with this
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//| IS31FL3741 instance. After deinitialization, no further operations
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//| may be performed."""
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//| ...
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STATIC mp_obj_t is31fl3741_FrameBuffer_deinit(mp_obj_t self_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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common_hal_is31fl3741_FrameBuffer_deinit(self);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_deinit_obj, is31fl3741_FrameBuffer_deinit);
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static void check_for_deinit(is31fl3741_FrameBuffer_obj_t *self) {
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if (self->framebuffer == NULL) {
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raise_deinited_error();
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}
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}
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//| brightness: float
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//| """In the current implementation, 0.0 turns the display off entirely
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//| and any other value up to 1.0 turns the display on fully."""
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STATIC mp_obj_t is31fl3741_FrameBuffer_get_brightness(mp_obj_t self_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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uint8_t current = common_hal_is31fl3741_get_current(self->is31fl3741);
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float brightness = (float)current / (float)0xFF;
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return mp_obj_new_float(brightness);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_brightness_obj, is31fl3741_FrameBuffer_get_brightness);
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STATIC mp_obj_t is31fl3741_FrameBuffer_set_brightness(mp_obj_t self_in, mp_obj_t value_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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mp_float_t brightness = mp_obj_get_float(value_in);
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if (brightness < 0.0f || brightness > 1.0f) {
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mp_raise_ValueError_varg(translate("%q must be %d-%d"), MP_QSTR_brightness, 0, 1);
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}
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uint8_t current = (uint8_t)(brightness * 0xFF);
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common_hal_is31fl3741_set_current(self->is31fl3741, current);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(is31fl3741_FrameBuffer_set_brightness_obj, is31fl3741_FrameBuffer_set_brightness);
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MP_PROPERTY_GETSET(is31fl3741_FrameBuffer_brightness_obj,
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(mp_obj_t)&is31fl3741_FrameBuffer_get_brightness_obj,
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(mp_obj_t)&is31fl3741_FrameBuffer_set_brightness_obj);
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//| def refresh(self) -> None:
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//| """Transmits the color data in the buffer to the pixels so that
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//| they are shown."""
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//| ...
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STATIC mp_obj_t is31fl3741_FrameBuffer_refresh(mp_obj_t self_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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common_hal_is31fl3741_FrameBuffer_refresh(self, 0);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_refresh_obj, is31fl3741_FrameBuffer_refresh);
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//| width: int
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//| """The width of the display, in pixels"""
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STATIC mp_obj_t is31fl3741_FrameBuffer_get_width(mp_obj_t self_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_is31fl3741_FrameBuffer_get_width(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_width_obj, is31fl3741_FrameBuffer_get_width);
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MP_PROPERTY_GETTER(is31fl3741_FrameBuffer_width_obj,
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(mp_obj_t)&is31fl3741_FrameBuffer_get_width_obj);
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//| height: int
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//| """The height of the display, in pixels"""
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//|
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STATIC mp_obj_t is31fl3741_FrameBuffer_get_height(mp_obj_t self_in) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_is31fl3741_FrameBuffer_get_height(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_height_obj, is31fl3741_FrameBuffer_get_height);
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MP_PROPERTY_GETTER(is31fl3741_FrameBuffer_height_obj,
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(mp_obj_t)&is31fl3741_FrameBuffer_get_height_obj);
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STATIC const mp_rom_map_elem_t is31fl3741_FrameBuffer_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&is31fl3741_FrameBuffer_deinit_obj) },
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{ MP_ROM_QSTR(MP_QSTR_brightness), MP_ROM_PTR(&is31fl3741_FrameBuffer_brightness_obj) },
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{ MP_ROM_QSTR(MP_QSTR_refresh), MP_ROM_PTR(&is31fl3741_FrameBuffer_refresh_obj) },
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{ MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&is31fl3741_FrameBuffer_width_obj) },
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{ MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&is31fl3741_FrameBuffer_height_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(is31fl3741_FrameBuffer_locals_dict, is31fl3741_FrameBuffer_locals_dict_table);
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STATIC void is31fl3741_FrameBuffer_get_bufinfo(mp_obj_t self_in, mp_buffer_info_t *bufinfo) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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check_for_deinit(self);
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*bufinfo = self->bufinfo;
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}
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STATIC void is31fl3741_FrameBuffer_swapbuffers(mp_obj_t self_in, uint8_t *dirty_row_bitmap) {
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common_hal_is31fl3741_FrameBuffer_refresh(self_in, dirty_row_bitmap);
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}
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STATIC void is31fl3741_FrameBuffer_deinit_proto(mp_obj_t self_in) {
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common_hal_is31fl3741_FrameBuffer_deinit(self_in);
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}
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STATIC float is31fl3741_FrameBuffer_get_brightness_proto(mp_obj_t self_in) {
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return common_hal_is31fl3741_FrameBuffer_get_paused(self_in) ? 0.0f : 1.0f;
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}
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STATIC bool is31fl3741_FrameBuffer_set_brightness_proto(mp_obj_t self_in, mp_float_t value) {
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common_hal_is31fl3741_FrameBuffer_set_paused(self_in, value <= 0);
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return true;
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}
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STATIC int is31fl3741_FrameBuffer_get_width_proto(mp_obj_t self_in) {
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return common_hal_is31fl3741_FrameBuffer_get_width(self_in);
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}
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STATIC int is31fl3741_FrameBuffer_get_height_proto(mp_obj_t self_in) {
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return common_hal_is31fl3741_FrameBuffer_get_height(self_in);
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}
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STATIC int is31fl3741_FrameBuffer_get_color_depth_proto(mp_obj_t self_in) {
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// The way displayio works depth is used to calculate bytes
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// We use an uint32_t for color already so setting to 24 causes
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// more changes required
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return 32;
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}
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STATIC int is31fl3741_FrameBuffer_get_bytes_per_cell_proto(mp_obj_t self_in) {
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return 1;
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}
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STATIC int is31fl3741_FrameBuffer_get_native_frames_per_second_proto(mp_obj_t self_in) {
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return 60; // This was just chosen may vary based on LEDs used?
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}
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STATIC const framebuffer_p_t is31fl3741_FrameBuffer_proto = {
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MP_PROTO_IMPLEMENT(MP_QSTR_protocol_framebuffer)
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.get_bufinfo = is31fl3741_FrameBuffer_get_bufinfo,
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.set_brightness = is31fl3741_FrameBuffer_set_brightness_proto,
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.get_brightness = is31fl3741_FrameBuffer_get_brightness_proto,
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.get_width = is31fl3741_FrameBuffer_get_width_proto,
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.get_height = is31fl3741_FrameBuffer_get_height_proto,
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.get_color_depth = is31fl3741_FrameBuffer_get_color_depth_proto,
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.get_bytes_per_cell = is31fl3741_FrameBuffer_get_bytes_per_cell_proto,
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.get_native_frames_per_second = is31fl3741_FrameBuffer_get_native_frames_per_second_proto,
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.swapbuffers = is31fl3741_FrameBuffer_swapbuffers,
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.deinit = is31fl3741_FrameBuffer_deinit_proto,
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};
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STATIC mp_int_t is31fl3741_FrameBuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
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is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
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// a readonly framebuffer would be unusual but not impossible
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if ((flags & MP_BUFFER_WRITE) && !(self->bufinfo.typecode & MP_OBJ_ARRAY_TYPECODE_FLAG_RW)) {
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return 1;
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}
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*bufinfo = self->bufinfo;
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bufinfo->typecode = 'H';
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return 0;
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}
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MP_DEFINE_CONST_OBJ_TYPE(
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is31fl3741_FrameBuffer_type,
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MP_QSTR_is31fl3741,
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MP_TYPE_FLAG_HAS_SPECIAL_ACCESSORS,
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locals_dict, &is31fl3741_FrameBuffer_locals_dict,
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make_new, is31fl3741_FrameBuffer_make_new,
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buffer, is31fl3741_FrameBuffer_get_buffer,
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protocol, &is31fl3741_FrameBuffer_proto
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);
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