@deck.gl/carto/dist/layers/schema/carto-raster-tile.js

CARTO official integration with Deck.gl. Build geospatial applications using CARTO and Deck.gl.

// deck.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors
import { readPackedTypedArray } from "./fast-pbf.js";
const ARRAY_TYPES = {
    uint8: Uint8Array,
    uint16: Uint16Array,
    uint32: Uint32Array,
    uint64: BigUint64Array,
    int8: Int8Array,
    int16: Int16Array,
    int32: Int32Array,
    int64: BigInt64Array,
    float32: Float32Array,
    float64: Float64Array
};
// Band ========================================
export class BandReader {
    static read(pbf, end) {
        return pbf.readFields(BandReader._readField, { name: '', type: '', data: null }, end);
    }
    static _readField(tag, obj, pbf) {
        if (tag === 1)
            obj.name = pbf.readString();
        else if (tag === 2)
            obj.type = pbf.readString();
        else if (tag === 3) {
            const TypedArray = ARRAY_TYPES[obj.type];
            if (!TypedArray) {
                throw Error(`Invalid data type: ${obj.type}`);
            }
            obj.data = {};
            const { compression } = TileReader;
            readPackedTypedArray(TypedArray, pbf, obj.data, { compression });
        }
    }
}
export class TileReader {
    static read(pbf, end) {
        return pbf.readFields(TileReader._readField, { blockSize: 0, bands: [] }, end);
    }
    static _readField(tag, obj, pbf) {
        if (tag === 1)
            obj.blockSize = pbf.readVarint();
        else if (tag === 2)
            obj.bands.push(BandReader.read(pbf, pbf.readVarint() + pbf.pos));
    }
}
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