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Compression

From-v3.0

Compression is the abstract base class for loaders.gl compressions.

Fields​

name: string​

The name of the compression scheme

isSupported: string​

Methods​

preload(): Promise<void>​

Asynchronously loads required libraries. For some compressions this must be completed before compressSync() and decompressSync() are available.

compress(data: ArrayBuffer): Promise<ArrayBuffer>​

Asynchronously compresses data.

decompress(data: ArrayBuffer): Promise<ArrayBuffer>​

Asynchronously decompresses data.

compressSync(data: ArrayBuffer): ArrayBuffer​

Synchronously compresses data.

For some compressions preload() must have been called and completed before synchronous operations are available.

decompressSync(data: ArrayBuffer): ArrayBuffer​

Asynchronously decompresses data.

For some compressions preload() must have been called and completed before synchronous operations are available.

compressBatches(data: AsyncIterable<ArrayBuffer>): AsyncIterable<ArrayBuffer>​

Asynchronously compresses data in batches.

If the underlying compression does not support streaming compression, the incoming data will be concatenated into a single ArrayBuffer and a single compressed batch will be yielded.

decompressBatches(data: AsyncIterable<ArrayBuffer>): AsyncIterable<ArrayBuffer>​

Asynchronously decompresses data.

Note: If the underlying compression does not support streaming compression, the incoming data will be concatenated into a single ArrayBuffer and a single decompressed batch will be yielded.