Function ffmpeg_sys_next::sws_init_context

pub unsafe extern "C" fn sws_init_context(
    sws_context: *mut SwsContext, 
    srcFilter: *mut SwsFilter, 
    dstFilter: *mut SwsFilter
) -> c_int

Initialize the swscaler context sws_context.

@return zero or positive value on success, a negative value on error