Function decompress 

pub fn decompress(
    ct: CompressionType,
    data: &[u8],
    max_output: ByteSize,
) -> Result<Bytes, CompressionError>

Decompress data using the codec identified by ct. See compress.

max_output bounds the size of the decompressed output. If decompression would produce more than max_output bytes, the function returns Err(CompressionError::TooLarge { .. }) and does not materialize the oversized buffer. This guards against decompression bombs on the untrusted decode path. Callers that handle wire input should derive max_output from the compressed length, for example from a bounded ratio plus an absolute ceiling.

Errors

Returns an error when input is malformed, compression or decompression fails, or runtime rate-limit state cannot be updated.