Function ffmpeg_sys_next::av_hmac_init

pub unsafe extern "C" fn av_hmac_init(
    ctx: *mut AVHMAC, 
    key: *const u8, 
    keylen: c_uint
)

Initialize an AVHMAC context with an authentication key. @param ctx The HMAC context @param key The authentication key @param keylen The length of the key, in bytes