Function BZ2_bzDecompressInit 

pub unsafe extern "C" fn BZ2_bzDecompressInit(
    strm: *mut bz_stream,
    verbosity: c_int,
    small: c_int,
) -> c_int

Prepares the stream for decompression.

Returns

• BZ_PARAM_ERROR if any of
  • strm.is_null()
  • !(0..=1).contains(&small)
  • !(0..=4).contains(&verbosity)
  • no valid allocator could be configured
• BZ_MEM_ERROR if insufficient memory is available
• BZ_OK otherwise

Safety

The caller must guarantee that

• Either
  • strm is NULL
  • strm satisfies the requirements of &mut *strm
• The bzalloc, bzfree and opaque fields form a valid allocator.