use std::{path::Path, time::Duration}; use crate::{ data::{AnimeDataBuffer, ANIME_DATA_LEN}, error::AnimeError, }; const WIDTH: usize = 74; const HEIGHT: usize = 36; /// Mostly intended to be used with ASUS gifs, but can be used for other purposes (like images) #[derive(Debug, Clone)] pub struct AnimeDiagonal([[u8; WIDTH]; HEIGHT], Option); impl Default for AnimeDiagonal { #[inline] fn default() -> Self { Self::new(None) } } impl AnimeDiagonal { #[inline] pub fn new(duration: Option) -> Self { Self([[0u8; WIDTH]; HEIGHT], duration) } #[inline] pub fn get_mut(&mut self) -> &mut [[u8; WIDTH]; HEIGHT] { &mut self.0 } /// Get a full diagonal row where `x` `y` is the starting point and `len` is the length of data. fn get_row(&self, x: usize, y: usize, len: usize) -> Vec { let mut buf = Vec::with_capacity(len); for i in 0..len { let val = self.0[HEIGHT - y - i - 1][x + i]; buf.push(val); } buf } /// Generate the base image from inputs. The result can be displayed as is or /// updated via scale, position, or angle then displayed again after `update()`. #[inline] pub fn from_png( path: &Path, duration: Option, bright: f32, ) -> Result { use pix::el::Pixel; let data = std::fs::read(path)?; let data = std::io::Cursor::new(data); let decoder = png_pong::Decoder::new(data)?.into_steps(); let png_pong::Step { raster, delay: _ } = decoder.last().ok_or(AnimeError::NoFrames)??; let mut matrix = AnimeDiagonal::new(duration); let width; match raster { png_pong::PngRaster::Graya8(ras) => { width = ras.width(); for (y, row) in ras.pixels().chunks(width as usize).enumerate() { for (x, px) in row.iter().enumerate() { let v = ::from(px.one() * bright); matrix.0[y][x] = v; } } } _ => return Err(AnimeError::Format), }; Ok(matrix) } } impl From<&AnimeDiagonal> for AnimeDataBuffer { /// Do conversion from the nested Vec in AnimeMatrix to the two required /// packets suitable for sending over USB #[inline] fn from(anime: &AnimeDiagonal) -> Self { let mut buf = vec![0u8; ANIME_DATA_LEN]; buf[1..=32].copy_from_slice(&anime.get_row(0, 3, 32)); buf[34..=66].copy_from_slice(&anime.get_row(0, 2, 33)); buf[69..=101].copy_from_slice(&anime.get_row(1, 2, 33)); // ?! buf[102..=134].copy_from_slice(&anime.get_row(1, 1, 33)); buf[137..=169].copy_from_slice(&anime.get_row(2, 1, 33)); buf[170..=202].copy_from_slice(&anime.get_row(2, 0, 33)); buf[204..=236].copy_from_slice(&anime.get_row(3, 0, 33)); buf[237..=268].copy_from_slice(&anime.get_row(4, 0, 32)); buf[270..=301].copy_from_slice(&anime.get_row(5, 0, 32)); buf[302..=332].copy_from_slice(&anime.get_row(6, 0, 31)); buf[334..=364].copy_from_slice(&anime.get_row(7, 0, 31)); buf[365..=394].copy_from_slice(&anime.get_row(8, 0, 30)); buf[396..=425].copy_from_slice(&anime.get_row(9, 0, 30)); buf[426..=454].copy_from_slice(&anime.get_row(10, 0, 29)); buf[456..=484].copy_from_slice(&anime.get_row(11, 0, 29)); buf[485..=512].copy_from_slice(&anime.get_row(12, 0, 28)); buf[514..=541].copy_from_slice(&anime.get_row(13, 0, 28)); buf[542..=568].copy_from_slice(&anime.get_row(14, 0, 27)); buf[570..=596].copy_from_slice(&anime.get_row(15, 0, 27)); buf[597..=622].copy_from_slice(&anime.get_row(16, 0, 26)); buf[624..=649].copy_from_slice(&anime.get_row(17, 0, 26)); buf[650..=674].copy_from_slice(&anime.get_row(18, 0, 25)); buf[676..=700].copy_from_slice(&anime.get_row(19, 0, 25)); buf[701..=724].copy_from_slice(&anime.get_row(20, 0, 24)); buf[726..=749].copy_from_slice(&anime.get_row(21, 0, 24)); buf[750..=772].copy_from_slice(&anime.get_row(22, 0, 23)); buf[774..=796].copy_from_slice(&anime.get_row(23, 0, 23)); buf[797..=818].copy_from_slice(&anime.get_row(24, 0, 22)); buf[820..=841].copy_from_slice(&anime.get_row(25, 0, 22)); buf[842..=862].copy_from_slice(&anime.get_row(26, 0, 21)); buf[864..=884].copy_from_slice(&anime.get_row(27, 0, 21)); buf[885..=904].copy_from_slice(&anime.get_row(28, 0, 20)); buf[906..=925].copy_from_slice(&anime.get_row(29, 0, 20)); buf[926..=944].copy_from_slice(&anime.get_row(30, 0, 19)); buf[946..=964].copy_from_slice(&anime.get_row(31, 0, 19)); buf[965..=982].copy_from_slice(&anime.get_row(32, 0, 18)); buf[984..=1001].copy_from_slice(&anime.get_row(33, 0, 18)); buf[1002..=1018].copy_from_slice(&anime.get_row(34, 0, 17)); buf[1020..=1036].copy_from_slice(&anime.get_row(35, 0, 17)); buf[1037..=1052].copy_from_slice(&anime.get_row(36, 0, 16)); buf[1054..=1069].copy_from_slice(&anime.get_row(37, 0, 16)); buf[1070..=1084].copy_from_slice(&anime.get_row(38, 0, 15)); buf[1086..=1100].copy_from_slice(&anime.get_row(39, 0, 15)); buf[1101..=1114].copy_from_slice(&anime.get_row(40, 0, 14)); buf[1116..=1129].copy_from_slice(&anime.get_row(41, 0, 14)); buf[1130..=1142].copy_from_slice(&anime.get_row(42, 0, 13)); buf[1144..=1156].copy_from_slice(&anime.get_row(43, 0, 13)); buf[1157..=1168].copy_from_slice(&anime.get_row(44, 0, 12)); buf[1170..=1181].copy_from_slice(&anime.get_row(45, 0, 12)); buf[1182..=1192].copy_from_slice(&anime.get_row(46, 0, 11)); buf[1194..=1204].copy_from_slice(&anime.get_row(47, 0, 11)); buf[1205..=1214].copy_from_slice(&anime.get_row(48, 0, 10)); buf[1216..=1225].copy_from_slice(&anime.get_row(49, 0, 10)); buf[1226..=1234].copy_from_slice(&anime.get_row(50, 0, 9)); buf[1236..=1244].copy_from_slice(&anime.get_row(51, 0, 9)); AnimeDataBuffer::from_vec(buf) } }