Function pyin 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pyin(
    timestamp: *mut *mut c_double,
    f0: *mut *mut c_double,
    voiced_flag: *mut *mut bool,
    voiced_prob: *mut *mut c_double,
    n_frames: *mut c_uint,
    input: *const c_double,
    length: c_uint,
    sr: c_uint,
    fmin: c_double,
    fmax: c_double,
    frame_length: c_uint,
    win_length: c_uint,
    hop_length: c_uint,
    resolution: c_double,
    fill_unvoiced: c_double,
    center: bool,
    pad_mode: c_uint,
) -> isize

C lang FFI for pYIN

detailed documentation is in PYINExecutor

Note

• If win_length is 0, use default value (frame_length / 2)
• If hop_length is 0, use default value (frame_length / 4)
• If resolution <= 0, use default value (0.1)
• If pad_mode is 0, zero padding. If 1, reflection padding

Safety

The caller must call free on f0, voiced_flag, voiced_prob to prevent a memory leak.