Function ff_draw_horiz_band

pub unsafe extern "C" fn ff_draw_horiz_band(
    avctx: *mut AVCodecContext,
    cur: *mut AVFrame,
    last: *mut AVFrame,
    y: c_int,
    h: c_int,
    picture_structure: c_int,
    first_field: c_int,
    low_delay: c_int,
)

Draw a horizontal band if supported.

@param h is the normal height, this will be reduced automatically if needed