gstreamer-rs/gstreamer/src/child_proxy.rs

65 lines
2 KiB
Rust

// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use ffi;
use glib;
use glib::object::IsA;
use glib::translate::*;
use std::ptr;
use ChildProxy;
pub trait ChildProxyExtManual {
fn get_child_property(&self, name: &str) -> Option<glib::Value>;
fn set_child_property(&self, name: &str, value: &glib::Value) -> Result<(), glib::BoolError>;
}
impl<O: IsA<ChildProxy>> ChildProxyExtManual for O {
fn get_child_property(&self, name: &str) -> Option<glib::Value> {
unsafe {
let found: bool = from_glib(ffi::gst_child_proxy_lookup(
self.to_glib_none().0,
name.to_glib_none().0,
ptr::null_mut(),
ptr::null_mut(),
));
if !found {
return None;
}
let mut value = glib::Value::uninitialized();
ffi::gst_child_proxy_get_property(
self.to_glib_none().0,
name.to_glib_none().0,
value.to_glib_none_mut().0,
);
Some(value)
}
}
fn set_child_property(&self, name: &str, value: &glib::Value) -> Result<(), glib::BoolError> {
unsafe {
let found: bool = from_glib(ffi::gst_child_proxy_lookup(
self.to_glib_none().0,
name.to_glib_none().0,
ptr::null_mut(),
ptr::null_mut(),
));
if !found {
return Err(glib::BoolError("Child property not found"));
}
ffi::gst_child_proxy_set_property(
self.to_glib_none().0,
name.to_glib_none().0,
value.to_glib_none().0,
);
Ok(())
}
}
}