1use std::ffi::CStr;
2use std::marker::PhantomData;
3use std::str::from_utf8_unchecked;
4
5use ffi::*;
6use media;
7
8pub struct Pad<'a> {
9 ptr: *const AVFilterPad,
10 idx: isize,
11
12 _marker: PhantomData<&'a ()>,
13}
14
15impl<'a> Pad<'a> {
16 pub unsafe fn wrap(ptr: *const AVFilterPad, idx: isize) -> Self {
17 Pad {
18 ptr,
19 idx,
20 _marker: PhantomData,
21 }
22 }
23
24 pub unsafe fn as_ptr(&self) -> *const AVFilterPad {
25 self.ptr
26 }
27
28 pub unsafe fn as_mut_ptr(&mut self) -> *mut AVFilterPad {
29 self.ptr as *mut _
30 }
31}
32
33impl<'a> Pad<'a> {
34 pub fn name(&self) -> Option<&str> {
35 unsafe {
36 let ptr: *const {unknown} = avfilter_pad_get_name(self.ptr, self.idx as i32);
37
38 if ptr.is_null() {
39 None
40 } else {
41 Some(from_utf8_unchecked(CStr::from_ptr(ptr).to_bytes()))
42 }
43 }
44 }
45
46 pub fn medium(&self) -> media::Type {
47 unsafe { media::Type::from(avfilter_pad_get_type(self.ptr, self.idx as i32)) }
48 }
49}
50