djsundog
/
circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
circuitpython/shared-bindings/displayio/Display.c

503 lines
26 KiB
C
Raw Blame History

/*
* 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.
*/
#include "shared-bindings/displayio/Display.h"
#include <stdint.h>
#include "lib/utils/context_manager_helpers.h"
#include "py/binary.h"
#include "py/objproperty.h"
#include "py/objtype.h"
#include "py/runtime.h"
#include "shared-bindings/displayio/Group.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/util.h"
#include "shared-module/displayio/__init__.h"
#include "supervisor/shared/translate.h"
//| _DisplayBus = Union[FourWire, ParallelBus, I2CDisplay]
//| """:py:class:`FourWire`, :py:class:`ParallelBus` or :py:class:`I2CDisplay`"""
//|
//|
//| class Display:
//| """Manage updating a display over a display bus
//|
//| This initializes a display and connects it into CircuitPython. Unlike other
//| objects in CircuitPython, Display objects live until `displayio.release_displays()`
//| is called. This is done so that CircuitPython can use the display itself.
//|
//| Most people should not use this class directly. Use a specific display driver instead that will
//| contain the initialization sequence at minimum."""
//|
//| def __init__(self, display_bus: _DisplayBus, init_sequence: ReadableBuffer, *, width: int, height: int, colstart: int = 0, rowstart: int = 0, rotation: int = 0, color_depth: int = 16, grayscale: bool = False, pixels_in_byte_share_row: bool = True, bytes_per_cell: int = 1, reverse_pixels_in_byte: bool = False, set_column_command: int = 0x2a, set_row_command: int = 0x2b, write_ram_command: int = 0x2c, set_vertical_scroll: int = 0, backlight_pin: Optional[microcontroller.Pin] = None, brightness_command: Optional[int] = None, brightness: float = 1.0, auto_brightness: bool = False, single_byte_bounds: bool = False, data_as_commands: bool = False, auto_refresh: bool = True, native_frames_per_second: int = 60) -> None:
//| r"""Create a Display object on the given display bus (`FourWire`, `ParallelBus` or `I2CDisplay`).
//|
//| The ``init_sequence`` is bitpacked to minimize the ram impact. Every command begins with a
//| command byte followed by a byte to determine the parameter count and if a delay is need after.
//| When the top bit of the second byte is 1, the next byte will be the delay time in milliseconds.
//| The remaining 7 bits are the parameter count excluding any delay byte. The third through final
//| bytes are the remaining command parameters. The next byte will begin a new command definition.
//| Here is a portion of ILI9341 init code:
//|
//| .. code-block:: python
//|
//| init_sequence = (b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma
//| b"\x11\x80\x78"# Exit Sleep then delay 0x78 (120ms)
//| b"\x29\x80\x78"# Display on then delay 0x78 (120ms)
//| )
//| display = displayio.Display(display_bus, init_sequence, width=320, height=240)
//|
//| The first command is 0xe1 with 15 (0xf) parameters following. The second and third are 0x11 and
//| 0x29 respectively with delays (0x80) of 120ms (0x78) and no parameters. Multiple byte literals
//| (b"") are merged together on load. The parens are needed to allow byte literals on subsequent
//| lines.
//|
//| The initialization sequence should always leave the display memory access inline with the scan
//| of the display to minimize tearing artifacts.
//|
//| :param display_bus: The bus that the display is connected to
//| :type display_bus: FourWire, ParallelBus or I2CDisplay
//| :param buffer init_sequence: Byte-packed initialization sequence.
//| :param int width: Width in pixels
//| :param int height: Height in pixels
//| :param int colstart: The index if the first visible column
//| :param int rowstart: The index if the first visible row
//| :param int rotation: The rotation of the display in degrees clockwise. Must be in 90 degree increments (0, 90, 180, 270)
//| :param int color_depth: The number of bits of color per pixel transmitted. (Some displays
//| support 18 bit but 16 is easier to transmit. The last bit is extrapolated.)
//| :param bool grayscale: True if the display only shows a single color.
//| :param bool pixels_in_byte_share_row: True when pixels are less than a byte and a byte includes pixels from the same row of the display. When False, pixels share a column.
//| :param int bytes_per_cell: Number of bytes per addressable memory location when color_depth < 8. When greater than one, bytes share a row or column according to pixels_in_byte_share_row.
//| :param bool reverse_pixels_in_byte: Reverses the pixel order within each byte when color_depth < 8. Does not apply across multiple bytes even if there is more than one byte per cell (bytes_per_cell.)
//| :param bool reverse_bytes_in_word: Reverses the order of bytes within a word when color_depth == 16
//| :param int set_column_command: Command used to set the start and end columns to update
//| :param int set_row_command: Command used so set the start and end rows to update
//| :param int write_ram_command: Command used to write pixels values into the update region. Ignored if data_as_commands is set.
//| :param int set_vertical_scroll: Command used to set the first row to show
//| :param microcontroller.Pin backlight_pin: Pin connected to the display's backlight
//| :param int brightness_command: Command to set display brightness. Usually available in OLED controllers.
//| :param float brightness: Initial display brightness. This value is ignored if auto_brightness is True.
//| :param bool auto_brightness: If True, brightness is controlled via an ambient light sensor or other mechanism.
//| :param bool single_byte_bounds: Display column and row commands use single bytes
//| :param bool data_as_commands: Treat all init and boundary data as SPI commands. Certain displays require this.
//| :param bool auto_refresh: Automatically refresh the screen
//| :param int native_frames_per_second: Number of display refreshes per second that occur with the given init_sequence.
//| :param bool backlight_on_high: If True, pulling the backlight pin high turns the backlight on."""
//| ...
//|
STATIC mp_obj_t displayio_display_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_display_bus, ARG_init_sequence, ARG_width, ARG_height, ARG_colstart, ARG_rowstart, ARG_rotation, ARG_color_depth, ARG_grayscale, ARG_pixels_in_byte_share_row, ARG_bytes_per_cell, ARG_reverse_pixels_in_byte, ARG_reverse_bytes_in_word, ARG_set_column_command, ARG_set_row_command, ARG_write_ram_command, ARG_set_vertical_scroll, ARG_backlight_pin, ARG_brightness_command, ARG_brightness, ARG_auto_brightness, ARG_single_byte_bounds, ARG_data_as_commands, ARG_auto_refresh, ARG_native_frames_per_second, ARG_backlight_on_high };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_display_bus, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_init_sequence, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, },
{ MP_QSTR_height, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, },
{ MP_QSTR_colstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
{ MP_QSTR_rowstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
{ MP_QSTR_rotation, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
{ MP_QSTR_color_depth, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 16} },
{ MP_QSTR_grayscale, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
{ MP_QSTR_pixels_in_byte_share_row, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = true} },
{ MP_QSTR_bytes_per_cell, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 1} },
{ MP_QSTR_reverse_pixels_in_byte, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
{ MP_QSTR_reverse_bytes_in_word, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = true} },
{ MP_QSTR_set_column_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2a} },
{ MP_QSTR_set_row_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2b} },
{ MP_QSTR_write_ram_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2c} },
{ MP_QSTR_set_vertical_scroll, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x0} },
{ MP_QSTR_backlight_pin, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} },
{ MP_QSTR_brightness_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = NO_BRIGHTNESS_COMMAND} },
{ MP_QSTR_brightness, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = MP_OBJ_NEW_SMALL_INT(1)} },
{ MP_QSTR_auto_brightness, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
{ MP_QSTR_single_byte_bounds, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
{ MP_QSTR_data_as_commands, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
{ MP_QSTR_auto_refresh, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = true} },
{ MP_QSTR_native_frames_per_second, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 60} },
{ MP_QSTR_backlight_on_high, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = true} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
mp_obj_t display_bus = args[ARG_display_bus].u_obj;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[ARG_init_sequence].u_obj, &bufinfo, MP_BUFFER_READ);
const mcu_pin_obj_t* backlight_pin = validate_obj_is_free_pin_or_none(args[ARG_backlight_pin].u_obj);
mp_float_t brightness = mp_obj_get_float(args[ARG_brightness].u_obj);
mp_int_t rotation = args[ARG_rotation].u_int;
if (rotation % 90 != 0) {
mp_raise_ValueError(translate("Display rotation must be in 90 degree increments"));
}
primary_display_t *disp = allocate_display_or_raise();
displayio_display_obj_t *self = &disp->display;;
self->base.type = &displayio_display_type;
common_hal_displayio_display_construct(
self,
display_bus, args[ARG_width].u_int, args[ARG_height].u_int, args[ARG_colstart].u_int, args[ARG_rowstart].u_int, rotation,
args[ARG_color_depth].u_int, args[ARG_grayscale].u_bool,
args[ARG_pixels_in_byte_share_row].u_bool,
args[ARG_bytes_per_cell].u_bool,
args[ARG_reverse_pixels_in_byte].u_bool,
args[ARG_reverse_bytes_in_word].u_bool,
args[ARG_set_column_command].u_int, args[ARG_set_row_command].u_int,
args[ARG_write_ram_command].u_int,
args[ARG_set_vertical_scroll].u_int,
bufinfo.buf, bufinfo.len,
MP_OBJ_TO_PTR(backlight_pin),
args[ARG_brightness_command].u_int,
brightness,
args[ARG_auto_brightness].u_bool,
args[ARG_single_byte_bounds].u_bool,
args[ARG_data_as_commands].u_bool,
args[ARG_auto_refresh].u_bool,
args[ARG_native_frames_per_second].u_int,
args[ARG_backlight_on_high].u_bool
);
return self;
}
// Helper to ensure we have the native super class instead of a subclass.
static displayio_display_obj_t* native_display(mp_obj_t display_obj) {
mp_obj_t native_display = mp_instance_cast_to_native_base(display_obj, &displayio_display_type);
mp_obj_assert_native_inited(native_display);
return MP_OBJ_TO_PTR(native_display);
}
//| def show(self, group: Group) -> None:
//| """Switches to displaying the given group of layers. When group is None, the default
//| CircuitPython terminal will be shown.
//|
//| :param Group group: The group to show."""
//| ...
//|
STATIC mp_obj_t displayio_display_obj_show(mp_obj_t self_in, mp_obj_t group_in) {
displayio_display_obj_t *self = native_display(self_in);
displayio_group_t* group = NULL;
if (group_in != mp_const_none) {
group = MP_OBJ_TO_PTR(native_group(group_in));
}
bool ok = common_hal_displayio_display_show(self, group);
if (!ok) {
mp_raise_ValueError(translate("Group already used"));
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_show_obj, displayio_display_obj_show);
//| def refresh(self, *, target_frames_per_second: int = 60, minimum_frames_per_second: int = 1) -> bool:
//| """When auto refresh is off, waits for the target frame rate and then refreshes the display,
//| returning True. If the call has taken too long since the last refresh call for the given
//| target frame rate, then the refresh returns False immediately without updating the screen to
//| hopefully help getting caught up.
//|
//| If the time since the last successful refresh is below the minimum frame rate, then an
//| exception will be raised. Set minimum_frames_per_second to 0 to disable.
//|
//| When auto refresh is on, updates the display immediately. (The display will also update
//| without calls to this.)
//|
//| :param int target_frames_per_second: How many times a second `refresh` should be called and the screen updated.
//| :param int minimum_frames_per_second: The minimum number of times the screen should be updated per second."""
//| ...
//|
STATIC mp_obj_t displayio_display_obj_refresh(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_target_frames_per_second, ARG_minimum_frames_per_second };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_target_frames_per_second, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 60} },
{ MP_QSTR_minimum_frames_per_second, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
displayio_display_obj_t *self = native_display(pos_args[0]);
uint32_t maximum_ms_per_real_frame = 0xffffffff;
mp_int_t minimum_frames_per_second = args[ARG_minimum_frames_per_second].u_int;
if (minimum_frames_per_second > 0) {
maximum_ms_per_real_frame = 1000 / minimum_frames_per_second;
}
return mp_obj_new_bool(common_hal_displayio_display_refresh(self, 1000 / args[ARG_target_frames_per_second].u_int, maximum_ms_per_real_frame));
}
MP_DEFINE_CONST_FUN_OBJ_KW(displayio_display_refresh_obj, 1, displayio_display_obj_refresh);
//| auto_refresh: bool
//| """True when the display is refreshed automatically."""
//|
STATIC mp_obj_t displayio_display_obj_get_auto_refresh(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return mp_obj_new_bool(common_hal_displayio_display_get_auto_refresh(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_auto_refresh_obj, displayio_display_obj_get_auto_refresh);
STATIC mp_obj_t displayio_display_obj_set_auto_refresh(mp_obj_t self_in, mp_obj_t auto_refresh) {
displayio_display_obj_t *self = native_display(self_in);
common_hal_displayio_display_set_auto_refresh(self, mp_obj_is_true(auto_refresh));
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_auto_refresh_obj, displayio_display_obj_set_auto_refresh);
const mp_obj_property_t displayio_display_auto_refresh_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_auto_refresh_obj,
(mp_obj_t)&displayio_display_set_auto_refresh_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| brightness: float
//| """The brightness of the display as a float. 0.0 is off and 1.0 is full brightness. When
//| `auto_brightness` is True, the value of `brightness` will change automatically.
//| If `brightness` is set, `auto_brightness` will be disabled and will be set to False."""
//|
STATIC mp_obj_t displayio_display_obj_get_brightness(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
mp_float_t brightness = common_hal_displayio_display_get_brightness(self);
if (brightness < 0) {
mp_raise_RuntimeError(translate("Brightness not adjustable"));
}
return mp_obj_new_float(brightness);
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_brightness_obj, displayio_display_obj_get_brightness);
STATIC mp_obj_t displayio_display_obj_set_brightness(mp_obj_t self_in, mp_obj_t brightness_obj) {
displayio_display_obj_t *self = native_display(self_in);
common_hal_displayio_display_set_auto_brightness(self, false);
mp_float_t brightness = mp_obj_get_float(brightness_obj);
if (brightness < 0 || brightness > 1.0) {
mp_raise_ValueError(translate("Brightness must be 0-1.0"));
}
bool ok = common_hal_displayio_display_set_brightness(self, brightness);
if (!ok) {
mp_raise_RuntimeError(translate("Brightness not adjustable"));
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_brightness_obj, displayio_display_obj_set_brightness);
const mp_obj_property_t displayio_display_brightness_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_brightness_obj,
(mp_obj_t)&displayio_display_set_brightness_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| auto_brightness: bool
//| """True when the display brightness is adjusted automatically, based on an ambient
//| light sensor or other method. Note that some displays may have this set to True by default,
//| but not actually implement automatic brightness adjustment. `auto_brightness` is set to False
//| if `brightness` is set manually."""
//|
STATIC mp_obj_t displayio_display_obj_get_auto_brightness(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return mp_obj_new_bool(common_hal_displayio_display_get_auto_brightness(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_auto_brightness_obj, displayio_display_obj_get_auto_brightness);
STATIC mp_obj_t displayio_display_obj_set_auto_brightness(mp_obj_t self_in, mp_obj_t auto_brightness) {
displayio_display_obj_t *self = native_display(self_in);
common_hal_displayio_display_set_auto_brightness(self, mp_obj_is_true(auto_brightness));
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_auto_brightness_obj, displayio_display_obj_set_auto_brightness);
const mp_obj_property_t displayio_display_auto_brightness_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_auto_brightness_obj,
(mp_obj_t)&displayio_display_set_auto_brightness_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| width: int
//| Gets the width of the board
//|
STATIC mp_obj_t displayio_display_obj_get_width(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_get_width(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_width_obj, displayio_display_obj_get_width);
const mp_obj_property_t displayio_display_width_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_width_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| height: int
//| """Gets the height of the board"""
//|
STATIC mp_obj_t displayio_display_obj_get_height(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_get_height(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_height_obj, displayio_display_obj_get_height);
const mp_obj_property_t displayio_display_height_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_height_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| rotation: int
//| """The rotation of the display as an int in degrees."""
//|
STATIC mp_obj_t displayio_display_obj_get_rotation(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_get_rotation(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_rotation_obj, displayio_display_obj_get_rotation);
STATIC mp_obj_t displayio_display_obj_set_rotation(mp_obj_t self_in, mp_obj_t value) {
displayio_display_obj_t *self = native_display(self_in);
common_hal_displayio_display_set_rotation(self, mp_obj_get_int(value));
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_rotation_obj, displayio_display_obj_set_rotation);
const mp_obj_property_t displayio_display_rotation_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_rotation_obj,
(mp_obj_t)&displayio_display_set_rotation_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| bus: _DisplayBus
//| """The bus being used by the display"""
//|
//|
STATIC mp_obj_t displayio_display_obj_get_bus(mp_obj_t self_in) {
displayio_display_obj_t *self = native_display(self_in);
return common_hal_displayio_display_get_bus(self);
}
MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_bus_obj, displayio_display_obj_get_bus);
const mp_obj_property_t displayio_display_bus_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&displayio_display_get_bus_obj,
(mp_obj_t)&mp_const_none_obj,
(mp_obj_t)&mp_const_none_obj},
};
//| def fill_row(self, y: int, buffer: WriteableBuffer) -> WriteableBuffer:
//| """Extract the pixels from a single row
//|
//| :param int y: The top edge of the area
//| :param bytearray buffer: The buffer in which to place the pixel data"""
//| ...
//|
STATIC mp_obj_t displayio_display_obj_fill_row(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_y, ARG_buffer };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_y, MP_ARG_INT | MP_ARG_REQUIRED, {.u_int = -1} },
{ MP_QSTR_buffer, MP_ARG_OBJ | MP_ARG_REQUIRED, {} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
displayio_display_obj_t *self = native_display(pos_args[0]);
mp_int_t y = args[ARG_y].u_int;
mp_obj_t *result = args[ARG_buffer].u_obj;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(result, &bufinfo, MP_BUFFER_WRITE);
if (bufinfo.typecode != BYTEARRAY_TYPECODE) {
mp_raise_ValueError(translate("Buffer is not a bytearray."));
}
if (self->core.colorspace.depth != 16) {
mp_raise_ValueError(translate("Display must have a 16 bit colorspace."));
}
displayio_area_t area = {
.x1 = 0,
.y1 = y,
.x2 = self->core.width,
.y2 = y + 1
};
uint8_t pixels_per_word = (sizeof(uint32_t) * 8) / self->core.colorspace.depth;
uint16_t buffer_size = self->core.width / pixels_per_word;
uint16_t pixels_per_buffer = displayio_area_size(&area);
if (pixels_per_buffer % pixels_per_word) {
buffer_size += 1;
}
uint32_t *result_buffer = bufinfo.buf;
size_t result_buffer_size = bufinfo.len;
if (result_buffer_size >= (buffer_size * 4)) {
volatile uint32_t mask_length = (pixels_per_buffer / 32) + 1;
uint32_t mask[mask_length];
for (uint16_t k = 0; k < mask_length; k++) {
mask[k] = 0x00000000;
}
displayio_display_core_fill_area(&self->core, &area, mask, result_buffer);
return result;
} else {
mp_raise_ValueError(translate("Buffer is too small"));
}
}
MP_DEFINE_CONST_FUN_OBJ_KW(displayio_display_fill_row_obj, 1, displayio_display_obj_fill_row);
STATIC const mp_rom_map_elem_t displayio_display_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&displayio_display_show_obj) },
{ MP_ROM_QSTR(MP_QSTR_refresh), MP_ROM_PTR(&displayio_display_refresh_obj) },
{ MP_ROM_QSTR(MP_QSTR_fill_row), MP_ROM_PTR(&displayio_display_fill_row_obj) },
{ MP_ROM_QSTR(MP_QSTR_auto_refresh), MP_ROM_PTR(&displayio_display_auto_refresh_obj) },
{ MP_ROM_QSTR(MP_QSTR_brightness), MP_ROM_PTR(&displayio_display_brightness_obj) },
{ MP_ROM_QSTR(MP_QSTR_auto_brightness), MP_ROM_PTR(&displayio_display_auto_brightness_obj) },
{ MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&displayio_display_width_obj) },
{ MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&displayio_display_height_obj) },
{ MP_ROM_QSTR(MP_QSTR_rotation), MP_ROM_PTR(&displayio_display_rotation_obj) },
{ MP_ROM_QSTR(MP_QSTR_bus), MP_ROM_PTR(&displayio_display_bus_obj) },
};
STATIC MP_DEFINE_CONST_DICT(displayio_display_locals_dict, displayio_display_locals_dict_table);
const mp_obj_type_t displayio_display_type = {
{ &mp_type_type },
.name = MP_QSTR_Display,
.make_new = displayio_display_make_new,
.locals_dict = (mp_obj_dict_t*)&displayio_display_locals_dict,
};
Reference in New Issue View Git Blame Copy Permalink