mirror of
https://github.com/MaSzyna-EU07/maszyna.git
synced 2026-11-14 06:53:27 +01:00
37 lines
1.5 KiB
C++
37 lines
1.5 KiB
C++
/*
|
|
This Source Code Form is subject to the
|
|
terms of the Mozilla Public License, v.
|
|
2.0. If a copy of the MPL was not
|
|
distributed with this file, You can
|
|
obtain one at
|
|
http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <cstdint>
|
|
#include <span>
|
|
|
|
// image filters the script screens call through the host (led_post, resize_lanczos), run natively rather than
|
|
// in the interpreter. they give the very pixels of the Python screens: led_util.render_post() and Pillow's
|
|
// resize(..., Image.LANCZOS). the images are RGBA, 4 bytes a pixel, row by row; alpha is ignored and written as 255
|
|
namespace script_screens
|
|
{
|
|
|
|
// the size in bytes of an RGBA image
|
|
constexpr std::size_t image_size(int const Width, int const Height)
|
|
{
|
|
return static_cast<std::size_t>(Width) * static_cast<std::size_t>(Height) * 4;
|
|
}
|
|
|
|
// led_util's render_post: every diode becomes 2x2 pixels with a darker grid between them, glowing into its neighbours
|
|
// (Bloom), in a 1 pixel black frame. Target takes (2 Width + 2) x (2 Height + 2) pixels. returns false for sizes that
|
|
// don't fit the spans
|
|
bool led_post(std::span<std::uint8_t const> Source, int Width, int Height, std::span<std::uint8_t> Target, bool Bloom);
|
|
|
|
// Pillow's resize with the Lanczos filter, horizontally then vertically, each pass rounded to 8 bits. returns false
|
|
// for sizes that don't fit the spans
|
|
bool resize_lanczos(std::span<std::uint8_t const> Source, int Width, int Height, std::span<std::uint8_t> Target, int TargetWidth, int TargetHeight);
|
|
|
|
} // namespace script_screens
|