| // zstd-compressed GeoTIFF tiles (VIIRS, AlphaEarth): geotiff.js 2.1.3 has no decoder for compression 50000, so one | |
| // is registered here, on fzstd. Importing this module once is enough: geotiff.js keeps the decoder for every file. | |
| import { addDecoder, BaseDecoder } from 'https://cdn.jsdelivr.net/npm/geotiff@2.1.3/+esm' | |
| import { decompress } from 'https://cdn.jsdelivr.net/npm/fzstd@0.1.1/+esm' | |
| class ZstdDecoder extends BaseDecoder { | |
| decodeBlock(buffer) { | |
| const out = decompress(new Uint8Array(buffer)) | |
| return out.buffer.slice(out.byteOffset, out.byteOffset + out.byteLength) | |
| } | |
| } | |
| addDecoder(50000, () => ZstdDecoder) | |