Function av_fifo_write_from_cb

pub unsafe extern "C" fn av_fifo_write_from_cb(
    f: *mut AVFifo,
    read_cb: Option<unsafe extern "C" fn(*mut c_void, *mut c_void, *mut usize) -> i32>,
    opaque: *mut c_void,
    nb_elems: *mut usize,
) -> i32

Write data from a user-provided callback into a FIFO.

@param f the FIFO buffer @param read_cb Callback supplying the data to the FIFO. May be called multiple times. @param opaque opaque user data to be provided to read_cb @param nb_elems Should point to the maximum number of elements that can be written. Will be updated to contain the number of elements actually written.

@return non-negative number on success, a negative error code on failure