Feng Luming

Can the AVformatContextInput::from_io_context interface add an optional AVdictionary parameter?

2

```rust pub fn open_memory_file(data: Arc) -> Result { let mut current = 0; let io_context = AVIOContextCustom::alloc_context( AVMem::new(1048576), false, vec![], Some(Box::new(move |_, buf| { let right = data.len().min(current + buf.len());...