compress-jpeg/compress_jpeg.js

A simple JPEG compression library for WebAssembly

let wasm;

function addToExternrefTable0(obj) {
    const idx = wasm.__externref_table_alloc();
    wasm.__wbindgen_export_2.set(idx, obj);
    return idx;
}

function handleError(f, args) {
    try {
        return f.apply(this, args);
    } catch (e) {
        const idx = addToExternrefTable0(e);
        wasm.__wbindgen_exn_store(idx);
    }
}

const cachedTextDecoder = (typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-8', { ignoreBOM: true, fatal: true }) : { decode: () => { throw Error('TextDecoder not available') } } );

if (typeof TextDecoder !== 'undefined') { cachedTextDecoder.decode(); };

let cachedUint8ArrayMemory0 = null;

function getUint8ArrayMemory0() {
    if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
        cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
    }
    return cachedUint8ArrayMemory0;
}

function getStringFromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
}

function isLikeNone(x) {
    return x === undefined || x === null;
}

const CLOSURE_DTORS = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(state => {
    wasm.__wbindgen_export_3.get(state.dtor)(state.a, state.b)
});

function makeMutClosure(arg0, arg1, dtor, f) {
    const state = { a: arg0, b: arg1, cnt: 1, dtor };
    const real = (...args) => {
        // First up with a closure we increment the internal reference
        // count. This ensures that the Rust closure environment won't
        // be deallocated while we're invoking it.
        state.cnt++;
        const a = state.a;
        state.a = 0;
        try {
            return f(a, state.b, ...args);
        } finally {
            if (--state.cnt === 0) {
                wasm.__wbindgen_export_3.get(state.dtor)(a, state.b);
                CLOSURE_DTORS.unregister(state);
            } else {
                state.a = a;
            }
        }
    };
    real.original = state;
    CLOSURE_DTORS.register(real, state, state);
    return real;
}

function _assertClass(instance, klass) {
    if (!(instance instanceof klass)) {
        throw new Error(`expected instance of ${klass.name}`);
    }
}
/**
 * @param {ImageData} image_data
 * @param {number} quality
 * @returns {Promise<ImageData>}
 */
export function compress_jpeg(image_data, quality) {
    _assertClass(image_data, ImageData);
    var ptr0 = image_data.__destroy_into_raw();
    const ret = wasm.compress_jpeg(ptr0, quality);
    return ret;
}

function __wbg_adapter_18(arg0, arg1, arg2) {
    wasm.closure6_externref_shim(arg0, arg1, arg2);
}

function __wbg_adapter_36(arg0, arg1, arg2, arg3) {
    wasm.closure23_externref_shim(arg0, arg1, arg2, arg3);
}

const ImageDataFinalization = (typeof FinalizationRegistry === 'undefined')
    ? { register: () => {}, unregister: () => {} }
    : new FinalizationRegistry(ptr => wasm.__wbg_imagedata_free(ptr >>> 0, 1));

export class ImageData {

    static __wrap(ptr) {
        ptr = ptr >>> 0;
        const obj = Object.create(ImageData.prototype);
        obj.__wbg_ptr = ptr;
        ImageDataFinalization.register(obj, obj.__wbg_ptr, obj);
        return obj;
    }

    __destroy_into_raw() {
        const ptr = this.__wbg_ptr;
        this.__wbg_ptr = 0;
        ImageDataFinalization.unregister(this);
        return ptr;
    }

    free() {
        const ptr = this.__destroy_into_raw();
        wasm.__wbg_imagedata_free(ptr, 0);
    }
    /**
     * @param {Uint8ClampedArray} data
     * @param {number} width
     * @param {number} height
     */
    constructor(data, width, height) {
        const ret = wasm.imagedata_new(data, width, height);
        this.__wbg_ptr = ret >>> 0;
        ImageDataFinalization.register(this, this.__wbg_ptr, this);
        return this;
    }
    /**
     * @returns {number}
     */
    width() {
        const ret = wasm.imagedata_width(this.__wbg_ptr);
        return ret >>> 0;
    }
    /**
     * @returns {number}
     */
    height() {
        const ret = wasm.imagedata_height(this.__wbg_ptr);
        return ret >>> 0;
    }
    /**
     * @returns {Uint8ClampedArray}
     */
    data() {
        const ret = wasm.imagedata_data(this.__wbg_ptr);
        return ret;
    }
}

async function __wbg_load(module, imports) {
    if (typeof Response === 'function' && module instanceof Response) {
        if (typeof WebAssembly.instantiateStreaming === 'function') {
            try {
                return await WebAssembly.instantiateStreaming(module, imports);

            } catch (e) {
                if (module.headers.get('Content-Type') != 'application/wasm') {
                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);

                } else {
                    throw e;
                }
            }
        }

        const bytes = await module.arrayBuffer();
        return await WebAssembly.instantiate(bytes, imports);

    } else {
        const instance = await WebAssembly.instantiate(module, imports);

        if (instance instanceof WebAssembly.Instance) {
            return { instance, module };

        } else {
            return instance;
        }
    }
}

function __wbg_get_imports() {
    const imports = {};
    imports.wbg = {};
    imports.wbg.__wbg_buffer_609cc3eee51ed158 = function(arg0) {
        const ret = arg0.buffer;
        return ret;
    };
    imports.wbg.__wbg_call_672a4d21634d4a24 = function() { return handleError(function (arg0, arg1) {
        const ret = arg0.call(arg1);
        return ret;
    }, arguments) };
    imports.wbg.__wbg_call_7cccdd69e0791ae2 = function() { return handleError(function (arg0, arg1, arg2) {
        const ret = arg0.call(arg1, arg2);
        return ret;
    }, arguments) };
    imports.wbg.__wbg_imagedata_new = function(arg0) {
        const ret = ImageData.__wrap(arg0);
        return ret;
    };
    imports.wbg.__wbg_length_238152a0aedbb6e7 = function(arg0) {
        const ret = arg0.length;
        return ret;
    };
    imports.wbg.__wbg_new_23a2665fac83c611 = function(arg0, arg1) {
        try {
            var state0 = {a: arg0, b: arg1};
            var cb0 = (arg0, arg1) => {
                const a = state0.a;
                state0.a = 0;
                try {
                    return __wbg_adapter_36(a, state0.b, arg0, arg1);
                } finally {
                    state0.a = a;
                }
            };
            const ret = new Promise(cb0);
            return ret;
        } finally {
            state0.a = state0.b = 0;
        }
    };
    imports.wbg.__wbg_new_7a91e41fe43b3c92 = function(arg0) {
        const ret = new Uint8ClampedArray(arg0);
        return ret;
    };
    imports.wbg.__wbg_newnoargs_105ed471475aaf50 = function(arg0, arg1) {
        const ret = new Function(getStringFromWasm0(arg0, arg1));
        return ret;
    };
    imports.wbg.__wbg_newwithbyteoffsetandlength_6d34787141015158 = function(arg0, arg1, arg2) {
        const ret = new Uint8ClampedArray(arg0, arg1 >>> 0, arg2 >>> 0);
        return ret;
    };
    imports.wbg.__wbg_queueMicrotask_97d92b4fcc8a61c5 = function(arg0) {
        queueMicrotask(arg0);
    };
    imports.wbg.__wbg_queueMicrotask_d3219def82552485 = function(arg0) {
        const ret = arg0.queueMicrotask;
        return ret;
    };
    imports.wbg.__wbg_resolve_4851785c9c5f573d = function(arg0) {
        const ret = Promise.resolve(arg0);
        return ret;
    };
    imports.wbg.__wbg_set_6775f73144c2ef27 = function(arg0, arg1, arg2) {
        arg0.set(arg1, arg2 >>> 0);
    };
    imports.wbg.__wbg_static_accessor_GLOBAL_88a902d13a557d07 = function() {
        const ret = typeof global === 'undefined' ? null : global;
        return isLikeNone(ret) ? 0 : addToExternrefTable0(ret);
    };
    imports.wbg.__wbg_static_accessor_GLOBAL_THIS_56578be7e9f832b0 = function() {
        const ret = typeof globalThis === 'undefined' ? null : globalThis;
        return isLikeNone(ret) ? 0 : addToExternrefTable0(ret);
    };
    imports.wbg.__wbg_static_accessor_SELF_37c5d418e4bf5819 = function() {
        const ret = typeof self === 'undefined' ? null : self;
        return isLikeNone(ret) ? 0 : addToExternrefTable0(ret);
    };
    imports.wbg.__wbg_static_accessor_WINDOW_5de37043a91a9c40 = function() {
        const ret = typeof window === 'undefined' ? null : window;
        return isLikeNone(ret) ? 0 : addToExternrefTable0(ret);
    };
    imports.wbg.__wbg_then_44b73946d2fb3e7d = function(arg0, arg1) {
        const ret = arg0.then(arg1);
        return ret;
    };
    imports.wbg.__wbindgen_cb_drop = function(arg0) {
        const obj = arg0.original;
        if (obj.cnt-- == 1) {
            obj.a = 0;
            return true;
        }
        const ret = false;
        return ret;
    };
    imports.wbg.__wbindgen_closure_wrapper52 = function(arg0, arg1, arg2) {
        const ret = makeMutClosure(arg0, arg1, 7, __wbg_adapter_18);
        return ret;
    };
    imports.wbg.__wbindgen_init_externref_table = function() {
        const table = wasm.__wbindgen_export_2;
        const offset = table.grow(4);
        table.set(0, undefined);
        table.set(offset + 0, undefined);
        table.set(offset + 1, null);
        table.set(offset + 2, true);
        table.set(offset + 3, false);
        ;
    };
    imports.wbg.__wbindgen_is_function = function(arg0) {
        const ret = typeof(arg0) === 'function';
        return ret;
    };
    imports.wbg.__wbindgen_is_undefined = function(arg0) {
        const ret = arg0 === undefined;
        return ret;
    };
    imports.wbg.__wbindgen_memory = function() {
        const ret = wasm.memory;
        return ret;
    };
    imports.wbg.__wbindgen_throw = function(arg0, arg1) {
        throw new Error(getStringFromWasm0(arg0, arg1));
    };

    return imports;
}

function __wbg_init_memory(imports, memory) {

}

function __wbg_finalize_init(instance, module) {
    wasm = instance.exports;
    __wbg_init.__wbindgen_wasm_module = module;
    cachedUint8ArrayMemory0 = null;


    wasm.__wbindgen_start();
    return wasm;
}

function initSync(module) {
    if (wasm !== undefined) return wasm;


    if (typeof module !== 'undefined') {
        if (Object.getPrototypeOf(module) === Object.prototype) {
            ({module} = module)
        } else {
            console.warn('using deprecated parameters for `initSync()`; pass a single object instead')
        }
    }

    const imports = __wbg_get_imports();

    __wbg_init_memory(imports);

    if (!(module instanceof WebAssembly.Module)) {
        module = new WebAssembly.Module(module);
    }

    const instance = new WebAssembly.Instance(module, imports);

    return __wbg_finalize_init(instance, module);
}

async function __wbg_init(module_or_path) {
    if (wasm !== undefined) return wasm;


    if (typeof module_or_path !== 'undefined') {
        if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
            ({module_or_path} = module_or_path)
        } else {
            console.warn('using deprecated parameters for the initialization function; pass a single object instead')
        }
    }

    if (typeof module_or_path === 'undefined') {
        module_or_path = new URL('compress_jpeg_bg.wasm', import.meta.url);
    }
    const imports = __wbg_get_imports();

    if (typeof module_or_path === 'string' || (typeof Request === 'function' && module_or_path instanceof Request) || (typeof URL === 'function' && module_or_path instanceof URL)) {
        module_or_path = fetch(module_or_path);
    }

    __wbg_init_memory(imports);

    const { instance, module } = await __wbg_load(await module_or_path, imports);

    return __wbg_finalize_init(instance, module);
}

export { initSync };
export default __wbg_init;