unsafe-libopus 0.2.0

libopus transpiled to rust by c2rust
Documentation 
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/* Second order AR filter with single delay elements */
pub fn silk_resampler_private_AR2(
    state: &mut [i32; 2],
    out_Q8: &mut [i32],
    in_0: &[i16],
    A_Q14: &[i16],
) {
    assert_eq!(out_Q8.len(), in_0.len());

    for k in 0..in_0.len() {
        let out32 = state[0] + ((in_0[k] as i32 as u32) << 8) as i32;
        out_Q8[k] = out32;

        let out32 = ((out32 as u32) << 2) as i32;
        state[0] = (state[1] as i64 + ((out32 as i64 * A_Q14[0] as i64) >> 16)) as i32;
        state[1] = ((out32 as i64 * A_Q14[1] as i64) >> 16) as i32;
    }
}