playa-ffmpeg 8.0.3

Safe FFmpeg wrapper with vcpkg integration for simplified cross-platform builds (FFmpeg 8.0, Rust 2024)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

use std::{panic, process};

use crate::ffi::*;
use libc::{c_int, c_void};

pub struct Interrupt {
    pub interrupt: AVIOInterruptCB,
}

extern "C" fn callback<F>(opaque: *mut c_void) -> c_int
where
    F: FnMut() -> bool,
{
    // Clippy suggests to remove &mut, but it doesn't compile then (move occurs because value has type `F`, which does not implement the `Copy` trait)
    #[allow(clippy::needless_borrow)]
    match panic::catch_unwind(|| (unsafe { &mut *(opaque as *mut F) })()) {
        Ok(ret) => ret as c_int,
        Err(_) => process::abort(),
    }
}

pub fn new<F>(opaque: Box<F>) -> Interrupt
where
    F: FnMut() -> bool,
{
    let interrupt_cb = AVIOInterruptCB { callback: Some(callback::<F>), opaque: Box::into_raw(opaque) as *mut c_void };
    Interrupt { interrupt: interrupt_cb }
}