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/// <reference lib="dom" />
import init, { decode_frame, decode_init } from "./codec_web.js"
console.log("init wasm");
await init()
console.log("done");
index("..")
async function index(url: string) {
const res = await fetch(url)
if (!res.ok) throw new Error("not ok");
document.body.innerHTML = await res.text();
const h1 = document.createElement("h1")
h1.textContent = "bv1 web player"
document.body.prepend(h1)
document.body.querySelectorAll("a").forEach(e => {
const u = url + "/" + e.textContent
e.onclick = ev => {
ev.preventDefault()
if (!u.endsWith(".bv1")) return alert("thats not bv1!")
document.body.innerHTML = ""
play(u.toString())
}
})
}
async function play(url: string) {
decode_init(1920, 1080)
document.body.innerText = "downloading…"
const res = await fetch(url)
if (!res.ok) throw new Error("not ok");
let buf: Uint8Array | undefined = new Uint8Array(await res.arrayBuffer())
document.body.innerText = ""
const canvas = document.createElement("canvas")
canvas.width = 1920
canvas.height = 1080
document.body.append(canvas)
document.body.style.backgroundColor = "#111"
const ctx = canvas.getContext("2d")!
let debug = false;
document.body.addEventListener("keydown", ev => {
if (ev.code == "KeyD") debug = !debug;
})
setInterval(() => {
const frame = decode_frame(buf ?? new Uint8Array(), debug);
buf = undefined
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
const data = imageData.data;
for (let y = 0; y < 1080; y++) {
for (let x = 0; x < 1920; x++) {
const ti = (x + y * 1920) * 4;
const si = (x + y * 1920) * 3;
data[ti + 0] = frame[si + 0]
data[ti + 1] = frame[si + 1]
data[ti + 2] = frame[si + 2]
data[ti + 3] = 255
}
}
ctx.putImageData(imageData, 0, 0);
}, 1000 / 30)
}
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