Files
squoosh/codecs/resize/pkg/resize.js
Ingvar Stepanyan 8e857cd393 Use native Wasm+Webpack support for Rust codecs
This delegates loading of Wasm modules to Webpack itself, making wrapper code simpler.

Emscripten-generated modules are still using custom loading glue as they're not compatible with Webpack.
2019-08-05 15:13:40 +01:00

51 lines
1.7 KiB
JavaScript

import * as wasm from './resize_bg.wasm';
let cachegetUint8Memory = null;
function getUint8Memory() {
if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
}
return cachegetUint8Memory;
}
let WASM_VECTOR_LEN = 0;
function passArray8ToWasm(arg) {
const ptr = wasm.__wbindgen_malloc(arg.length * 1);
getUint8Memory().set(arg, ptr / 1);
WASM_VECTOR_LEN = arg.length;
return ptr;
}
let cachegetInt32Memory = null;
function getInt32Memory() {
if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
}
return cachegetInt32Memory;
}
function getArrayU8FromWasm(ptr, len) {
return getUint8Memory().subarray(ptr / 1, ptr / 1 + len);
}
/**
* @param {Uint8Array} input_image
* @param {number} input_width
* @param {number} input_height
* @param {number} output_width
* @param {number} output_height
* @param {number} typ_idx
* @param {boolean} premultiply
* @param {boolean} color_space_conversion
* @returns {Uint8Array}
*/
export function resize(input_image, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion) {
const retptr = 8;
const ret = wasm.resize(retptr, passArray8ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion);
const memi32 = getInt32Memory();
const v0 = getArrayU8FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 1);
return v0;
}