Function av_adler32_update

pub unsafe extern "C" fn av_adler32_update(
    adler: u32,
    buf: *const u8,
    len: usize,
) -> u32

Calculate the Adler32 checksum of a buffer.

Passing the return value to a subsequent av_adler32_update() call allows the checksum of multiple buffers to be calculated as though they were concatenated.

@param adler initial checksum value @param buf pointer to input buffer @param len size of input buffer @return updated checksum