Type Alias CompressIoCallback 

pub type CompressIoCallback = Option<unsafe extern "C" fn(context: *mut c_void, buffer: *mut u8, size: usize) -> i32>;

I/O callback for streamed compression/decompression

Arguments

• context - user context
• buffer - buffer to read/write
• size - size of buffer

Returns

number of bytes read/written, 0 on end of stream, negative on error

Aliased Type

pub enum CompressIoCallback {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *mut u8, usize) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *mut u8, usize) -> i32)

Some value of type T.