geotiff/dist-module/source/arraybuffer.js

GeoTIFF image decoding in JavaScript

import { BaseSource } from './basesource.js';
import { AbortError } from '../utils.js';
class ArrayBufferSource extends BaseSource {
    /**
     * @param {ArrayBuffer} arrayBuffer
     */
    constructor(arrayBuffer) {
        super();
        this.arrayBuffer = arrayBuffer;
    }
    /**
     * @param {import('./basesource.js').Slice} slice
     * @param {AbortSignal} [signal]
     * @returns {Promise<import('./basesource.js').SliceWithData>}
     */
    fetchSlice(slice, signal) {
        if (signal && signal.aborted) {
            throw new AbortError('Request aborted');
        }
        return Promise.resolve({
            data: this.arrayBuffer.slice(slice.offset, slice.offset + slice.length),
            offset: slice.offset,
            length: slice.length,
        });
    }
}
/** @param {ArrayBuffer} arrayBuffer */
export function makeBufferSource(arrayBuffer) {
    return new ArrayBufferSource(arrayBuffer);
}
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