Function blosc2_decompress 

pub unsafe extern "C" fn blosc2_decompress(
    src: *const c_void,
    srcsize: i32,
    dest: *mut c_void,
    destsize: i32,
) -> c_int

@brief Decompress a block of compressed data in @p src, put the result in @p dest and returns the size of the decompressed block.

@warning The @p src buffer and the @p dest buffer can not overlap.

@remark Decompression is memory safe and guaranteed not to write the @p dest buffer more than what is specified in @p destsize.

@remark In case you want to keep under control the number of bytes read from source, you can call #blosc1_cbuffer_sizes first to check whether the @p nbytes (i.e. the number of bytes to be read from @p src buffer by this function) in the compressed buffer is ok with you.

@param src The buffer to be decompressed. @param srcsize The size of the buffer to be decompressed. @param dest The buffer where the decompressed data will be put. @param destsize The size of the @p dest buffer.

@return The number of bytes decompressed. If an error occurs, e.g. the compressed data is corrupted or the output buffer is not large enough, then a negative value will be returned instead.