playa_ffmpeg/util/dictionary/
mutable.rs

1use std::{ffi::CString, fmt, marker::PhantomData, ops::Deref};
2
3use super::immutable;
4use crate::ffi::*;
5
6pub struct Ref<'a> {
7    ptr: *mut AVDictionary,
8    imm: immutable::Ref<'a>,
9
10    _marker: PhantomData<&'a ()>,
11}
12
13impl<'a> Ref<'a> {
14    pub unsafe fn wrap(ptr: *mut AVDictionary) -> Self {
15        Ref { ptr, imm: unsafe { immutable::Ref::wrap(ptr) }, _marker: PhantomData }
16    }
17
18    pub unsafe fn as_mut_ptr(&self) -> *mut AVDictionary {
19        self.ptr
20    }
21}
22
23impl<'a> Ref<'a> {
24    pub fn set(&mut self, key: &str, value: &str) {
25        unsafe {
26            let key = CString::new(key).unwrap();
27            let value = CString::new(value).unwrap();
28            let mut ptr = self.as_mut_ptr();
29
30            if av_dict_set(&mut ptr, key.as_ptr(), value.as_ptr(), 0) < 0 {
31                panic!("out of memory");
32            }
33
34            self.ptr = ptr;
35            self.imm = immutable::Ref::wrap(ptr);
36        }
37    }
38}
39
40impl<'a> Deref for Ref<'a> {
41    type Target = immutable::Ref<'a>;
42
43    fn deref(&self) -> &Self::Target {
44        &self.imm
45    }
46}
47
48impl<'a> fmt::Debug for Ref<'a> {
49    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
50        self.imm.fmt(fmt)
51    }
52}
playa_ffmpeg/util/dictionary/mutable.rs

playa_ffmpeg/util/dictionary/
mutable.rs
