Function av_rdft_init

pub unsafe extern "C" fn av_rdft_init(
    nbits: i32,
    trans: u32,
) -> *mut RDFTContext

Set up a real FFT. @param nbits log2 of the length of the input array @param trans the type of transform

@deprecated use av_tx_init from libavutil/tx.h with a type of AV_TX_FLOAT_RDFT