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The global thread pool has not been initialized.: ThreadPoolBuildError { kind: IOError(Error { kind: Unsupported, message: "operation not supported on this platform" }) } #1496
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There is not multithreading in js/wasm but you can try disabling the
|
my toml file already had this setting, what solved the problem was removing these lines: #[features]
#default = ["console_error_panic_hook", "rayon"]
#rayon = ["image/jpeg_rayon", "imageproc/rayon"] any idea why this happens? [package]
authors = ["Silvia O'Dwyer <silviaodwyerdev@gmail.com>"]
categories = ["wasm", "multimedia"]
description = "High-performance image processing library for native use and the web"
license = "Apache-2.0"
name = "photon-rs"
readme = "./README.md"
repository = "https://github.com/silvia-odwyer/photon"
version = "0.3.1"
edition = "2018"
exclude = [
"pkg/*",
"examples/input_images/*"
]
homepage = "https://silvia-odwyer.github.io/photon/"
[lib]
crate-type = ["cdylib", "rlib"]
[dependencies]
#image = { version = "0.23.12", default-features = false, features = ["gif", "jpeg", "ico", "png", "pnm", "tga", "tiff", "webp", "bmp", "hdr", "dxt", "dds", "farbfeld"] }
palette="0.5.0"
rand="0.7.2"
num="0.3.1"
imageproc = { version = "0.22.0", default-features = false }
rusttype="0.9.2"
base64="0.13.0"
time="0.2.23"
wasm-bindgen = "0.2" #0.2.25
serde = { version = "1.0", features = ["derive"] }
thiserror = "1.0"
js-sys = "0.3.51" # 0.3.45
node-sys = "0.4.2"
perlin2d = "0.2.6"
# The `console_error_panic_hook` crate provides better debugging of panics by
# logging them with `console.error`. This is great for development, but requires
# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
# code size when deploying.
#console_error_panic_hook = { version = "0.1.6", optional = true }
console_error_panic_hook = "0.1.6"
# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
# compared to the default allocator's ~10K. It is slower than the default
# allocator, however.
wee_alloc = { version = "0.4.2", optional = true }
[dependencies.image]
version = "0.23.14"
default-features = false
features = ["gif", "jpeg", "ico", "png", "pnm", "tga", "tiff", "webp", "bmp", "hdr", "dxt", "dds", "farbfeld"]
[dev-dependencies]
time="0.2.1"
criterion = "0.3"
[[bench]]
name = "photon_benchmark"
harness = false
[package.metadata.wasm-pack.profile.release]
wasm-opt = ["-O3", "--enable-mutable-globals"]
[dependencies.web-sys]
version = "0.3"
features = [
"Document",
"Element",
# "ArrayBuffer",
"Blob",
"HtmlElement",
"Node",
"Window",
"CanvasRenderingContext2d",
"ImageData",
"HtmlCanvasElement",
"HtmlImageElement",
"console",
'CssStyleDeclaration',
'EventTarget',
]
#[features]
#default = ["console_error_panic_hook", "rayon"]
#rayon = ["image/jpeg_rayon", "imageproc/rayon"]
|
The |
@HeroicKatora <!DOCTYPE html>
<html>
<head>
<title>teste</title>
<script id="script-photon" src="photon_rs.js"></script>
<script>
var downloadBlob, downloadURL;
downloadBlob = function (data, fileName, mimeType) {
var blob, url;
blob = new Blob([data], {
type: mimeType
});
url = window.URL.createObjectURL(blob);
downloadURL(url, fileName);
setTimeout(function () {
return window.URL.revokeObjectURL(url);
}, 1000);
};
downloadURL = function (data, fileName) {
var a;
a = document.createElement('a');
a.href = data;
a.download = fileName;
document.body.appendChild(a);
a.style = 'display: none';
a.click();
a.remove();
};
window.photon;
async function initPhoton() {
var scri = document.querySelector('#script-photon');
var url = scri.src.replace(/\.js$/, '_bg.wasm');
window.photon = await wasm_bindgen(url);
let t1 = performance.now();
let buf = await fetch("https://i.imgur.com/LYVUrUf.jpg", { referrer: "" }).then(r => r.arrayBuffer()); // huge jpg
console.log(performance.now() - t1);
let array = photon.resize_image_from_uint8array(new Uint8Array(buf), 1024, 1024, 80);
downloadBlob(array, 'some-file.jpg', 'image/jpeg');
console.log(performance.now() - t1);
}
initPhoton();
async function readFileAsArrayBuffer(file) {
let result_base64 = await new Promise((resolve) => {
let fileReader = new FileReader();
fileReader.onload = (e) => resolve(fileReader.result);
fileReader.readAsArrayBuffer(file);
});
return result_base64;
}
</script>
</head>
<body>
<h1>teste</h1>
</body>
</html> /// open image from a js Uint8Array and resize
#[wasm_bindgen]
pub fn resize_image_from_uint8array(
bytes: Vec<u8>,
nwidth: u32,
nheight: u32,
quality: u8,
) -> Vec<u8> {
console_error_panic_hook::set_once();
let img = image::load_from_memory(&bytes).unwrap();
let scaled = img.resize(nwidth, nheight, image::imageops::FilterType::Triangle);
let mut buf = Vec::new();
scaled
.write_to(&mut buf, image::ImageOutputFormat::Jpeg(quality))
.unwrap();
return buf;
} |
Sure, |
@HeroicKatora i think that there should be explanations about available features in |
This crashes app if you load JPEG files. ref: image-rs/image#1496
I'm trying to decode a JPEG image from a Vec u8, this Vec u8 comes from a javascript Uint8Array, as I'm trying to process an image in rust through WebAssembly, but I'm getting the following error:
https://github.com/insinfo/photon-test
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