Function ffmpeg_sys::av_find_info_tag

pub unsafe extern "C" fn av_find_info_tag(
    arg: *mut c_char, 
    arg_size: c_int, 
    tag1: *const c_char, 
    info: *const c_char
) -> c_int

Attempt to find a specific tag in a URL.

syntax: ‘?tag1=val1&tag2=val2…’. Little URL decoding is done. Return 1 if found.