Files
Ambilight/src/main.rs
PVV Sanctuary 62dffac3b4 initial
2026-03-16 19:21:18 +01:00

122 lines
3.8 KiB
Rust

use reqwest::Client;
use serde::Serialize;
use std::time::{Duration, Instant};
use okmain::rgb;
use win_screenshot::prelude::*;
const URL: &str = "https://homeassistant.pvv.ntnu.no:8123/api/services/light/turn_on";
const TOKEN: &str = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiI4YWVmZWI2ZjYwNDg0ZmJlODNkOWI2YTUyM2UwODk4NCIsImlhdCI6MTc3MzI0MzYxNywiZXhwIjoyMDg4NjAzNjE3fQ.xZ9pWCymgwfJfyQdgdHmiFMuDgmstfpx1vDohl34_rw";
#[derive(Serialize, Clone)]
struct Payload {
entity_id: String,
brightness: u8,
rgb_color: [u8; 3],
}
#[tokio::main]
async fn main() {
let client = Client::new();
let mut payload = Payload {
entity_id: String::from("light.fargelys"),
brightness: 200,
rgb_color: [0, 0, 0],
};
let logging = true;
let time_between_requests = Duration::from_millis(1000);
loop {
let frame_start = Instant::now();
let v = loop {
let buf = capture_display().unwrap();
let now = Instant::now();
let v =
get_next_rgb_value_for_asynchronously_setting_mood_lights_in_koserommet_at_pvv_by_using_a_mean(buf);
let diff = color_difference_is_great_enough_for_making_a_request_to_change_light_colors_using_euclidian_distance(
payload.rgb_color,
v);
let elapsed = now.elapsed();
if diff > 0.1 {
if logging {
println!(
"calculated average pixel value in: {} milliseconds",
elapsed.as_millis()
);
println!("new_rgb_color: {:?}", v);
println!("rgb_color: {:?}", payload.rgb_color);
println!("Found difference of: {}", diff);
}
payload.rgb_color = v;
break v;
}
if frame_start.elapsed() > time_between_requests {
break v;
}
};
payload.rgb_color = v;
let now = Instant::now();
client
.post(URL)
.bearer_auth(TOKEN)
.body(serde_json::to_string(&payload).unwrap())
.send()
.await
.unwrap()
.text()
.await
.unwrap();
let elapsed = now.elapsed();
if logging {
println!("got response in: {} milliseconds", elapsed.as_millis());
}
}
}
fn get_next_rgb_value_for_asynchronously_setting_mood_lights_in_koserommet_at_pvv_by_using_a_mean(
frame: RgbBuf,
) -> [u8; 3] {
let pixel_count = frame.width as u64 * frame.height as u64;
let v: [u8; 3] = frame
.pixels
.chunks_exact(4)
.fold([0u64, 0u64, 0u64], |[acc_r, acc_g, acc_b], pixel| {
[
acc_r + pixel[0] as u64,
acc_g + pixel[1] as u64,
acc_b + pixel[2] as u64,
]
})
.map(|sum| (sum / pixel_count) as u8);
v
}
fn get_next_rgb_value_for_asynchronously_setting_mood_lights_in_koserommet_at_pvv_by_finding_main_colors(
frame: RgbBuf,
) -> [u8; 3] {
let v: Vec<u8> = frame
.pixels
.iter()
.enumerate()
.filter(|(i, _)| i % 4 != 3)
.map(|(_, n)| *n)
.collect();
let mut output = okmain::colors(
okmain::InputImage::from_bytes(frame.width as u16, frame.height as u16, &v).unwrap(),
);
let a = output.pop().unwrap();
[a.r, a.g, a.b]
}
fn color_difference_is_great_enough_for_making_a_request_to_change_light_colors_using_euclidian_distance(
a: [u8; 3],
b: [u8; 3],
) -> f64 {
(((a[0].max(b[0]) - a[0].min(b[0])) as f64).powf(2.0)
+ ((a[1].max(b[1]) - a[1].min(b[1])) as f64).powf(2.0)
+ ((a[2].max(b[2]) - a[2].min(b[2])) as f64).powf(2.0))
.sqrt()
/ ((255.0f64.powf(2.0) * 3.0).sqrt())
}