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use DeviceProvider;
use glib::translate::ToGlibPtr;
use glib::IsA;
use std::ffi::CStr;
use ffi;
use gobject_ffi;
pub trait DeviceProviderExtManual {
fn get_metadata<'a>(&self, key: &str) -> Option<&'a str>;
}
impl<O: IsA<DeviceProvider>> DeviceProviderExtManual for O {
fn get_metadata<'a>(&self, key: &str) -> Option<&'a str> {
unsafe {
let klass = (*(self.to_glib_none().0 as *mut gobject_ffi::GTypeInstance)).g_class
as *mut ffi::GstDeviceProviderClass;
let ptr = ffi::gst_device_provider_class_get_metadata(klass, key.to_glib_none().0);
if ptr.is_null() {
None
} else {
Some(CStr::from_ptr(ptr).to_str().unwrap())
}
}
}
}