gst-plugins-rs/src/rssink.rs

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Rust
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use libc::c_char;
use std::ffi::{CStr, CString};
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use std::slice;
use std::ptr;
use utils::*;
pub trait Sink: Sync + Send {
fn set_uri(&mut self, uri_str: &Option<String>) -> bool;
fn get_uri(&self) -> Option<String>;
fn start(&mut self) -> bool;
fn stop(&mut self) -> bool;
fn render(&mut self, data: &[u8]) -> GstFlowReturn;
}
#[no_mangle]
pub extern "C" fn sink_drop(ptr: *mut Box<Sink>) {
unsafe { Box::from_raw(ptr) };
}
#[no_mangle]
pub extern "C" fn sink_set_uri(ptr: *mut Box<Sink>, uri_ptr: *const c_char) -> GBoolean{
let source: &mut Box<Sink> = unsafe { &mut *ptr };
if uri_ptr.is_null() {
GBoolean::from_bool(source.set_uri(&None))
} else {
let uri = unsafe { CStr::from_ptr(uri_ptr) };
GBoolean::from_bool(source.set_uri(&Some(String::from(uri.to_str().unwrap()))))
}
}
#[no_mangle]
pub extern "C" fn sink_get_uri(ptr: *const Box<Sink>) -> *mut c_char {
let source: &Box<Sink> = unsafe { &*ptr };
match source.get_uri() {
Some(ref uri) =>
CString::new(uri.clone().into_bytes()).unwrap().into_raw(),
None =>
ptr::null_mut()
}
}
#[no_mangle]
pub extern "C" fn sink_render(ptr: *mut Box<Sink>, data_ptr: *const u8, data_len: usize) -> GstFlowReturn {
let source: &mut Box<Sink> = unsafe { &mut *ptr };
let data = unsafe { slice::from_raw_parts(data_ptr, data_len) };
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source.render(data)
}
#[no_mangle]
pub extern "C" fn sink_start(ptr: *mut Box<Sink>) -> GBoolean {
let source: &mut Box<Sink> = unsafe { &mut *ptr };
GBoolean::from_bool(source.start())
}
#[no_mangle]
pub extern "C" fn sink_stop(ptr: *mut Box<Sink>) -> GBoolean {
let source: &mut Box<Sink> = unsafe { &mut *ptr };
GBoolean::from_bool(source.stop())
}