ffmpeg_next/format/stream/
stream_mut.rs

1use std::mem;
2use std::ops::Deref;
3
4use super::Stream;
5use ffi::*;
6use format::context::common::Context;
7use {codec, Dictionary, Rational};
8
9pub struct StreamMut<'a> {
10    context: &'a mut Context,
11    index: usize,
12
13    immutable: Stream<'a>,
14}
15
16impl<'a> StreamMut<'a> {
17    pub unsafe fn wrap(context: &mut Context, index: usize) -> StreamMut<'_> {
18        StreamMut {
19            context: mem::transmute_copy(&context),
20            index,
21
22            immutable: Stream::wrap(mem::transmute_copy(&context), index),
23        }
24    }
25
26    pub unsafe fn as_mut_ptr(&mut self) -> *mut AVStream {
27        *(*self.context.as_mut_ptr()).streams.add(self.index)
28    }
29}
30
31impl<'a> StreamMut<'a> {
32    pub fn set_time_base<R: Into<Rational>>(&mut self, value: R) {
33        unsafe {
34            (*self.as_mut_ptr()).time_base = value.into().into();
35        }
36    }
37
38    pub fn set_rate<R: Into<Rational>>(&mut self, value: R) {
39        unsafe {
40            (*self.as_mut_ptr()).r_frame_rate = value.into().into();
41        }
42    }
43
44    pub fn set_avg_frame_rate<R: Into<Rational>>(&mut self, value: R) {
45        unsafe {
46            (*self.as_mut_ptr()).avg_frame_rate = value.into().into();
47        }
48    }
49
50    pub fn set_parameters<P: Into<codec::Parameters>>(&mut self, parameters: P) {
51        let parameters = parameters.into();
52
53        unsafe {
54            avcodec_parameters_copy((*self.as_mut_ptr()).codecpar, parameters.as_ptr());
55        }
56    }
57
58    pub fn set_metadata(&mut self, metadata: Dictionary) {
59        unsafe {
60            let metadata = metadata.disown();
61            (*self.as_mut_ptr()).metadata = metadata;
62        }
63    }
64}
65
66impl<'a> Deref for StreamMut<'a> {
67    type Target = Stream<'a>;
68
69    fn deref(&self) -> &Self::Target {
70        &self.immutable
71    }
72}
ffmpeg_next/format/stream/stream_mut.rs

ffmpeg_next/format/stream/
stream_mut.rs
