gstreamer-rs/gstreamer/src/bin.rs

126 lines
4 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 Bin;
use Element;
use glib;
use glib::IsA;
use glib::translate::{from_glib, from_glib_full, FromGlibPtrContainer, ToGlib, ToGlibPtr};
use ffi;
pub trait BinExtManual {
fn add_many<E: IsA<Element>>(&self, elements: &[&E]) -> Result<(), glib::BoolError>;
fn remove_many<E: IsA<Element>>(&self, elements: &[&E]) -> Result<(), glib::BoolError>;
fn iterate_all_by_interface(&self, iface: glib::types::Type) -> ::Iterator<Element>;
fn iterate_elements(&self) -> ::Iterator<Element>;
fn iterate_recurse(&self) -> ::Iterator<Element>;
fn iterate_sinks(&self) -> ::Iterator<Element>;
fn iterate_sorted(&self) -> ::Iterator<Element>;
fn iterate_sources(&self) -> ::Iterator<Element>;
fn get_children(&self) -> Vec<Element>;
}
impl<O: IsA<Bin>> BinExtManual for O {
fn add_many<E: IsA<Element>>(&self, elements: &[&E]) -> Result<(), glib::BoolError> {
for e in elements {
unsafe {
let ret: bool =
from_glib(ffi::gst_bin_add(self.to_glib_none().0, e.to_glib_none().0));
if !ret {
return Err(glib::BoolError("Failed to add elements"));
}
}
}
Ok(())
}
fn remove_many<E: IsA<Element>>(&self, elements: &[&E]) -> Result<(), glib::BoolError> {
for e in elements {
unsafe {
let ret: bool = from_glib(ffi::gst_bin_remove(
self.to_glib_none().0,
e.to_glib_none().0,
));
if !ret {
return Err(glib::BoolError("Failed to add elements"));
}
}
}
Ok(())
}
fn iterate_all_by_interface(&self, iface: glib::types::Type) -> ::Iterator<Element> {
unsafe {
from_glib_full(ffi::gst_bin_iterate_all_by_interface(
self.to_glib_none().0,
iface.to_glib(),
))
}
}
fn iterate_elements(&self) -> ::Iterator<Element> {
unsafe { from_glib_full(ffi::gst_bin_iterate_elements(self.to_glib_none().0)) }
}
fn iterate_recurse(&self) -> ::Iterator<Element> {
unsafe { from_glib_full(ffi::gst_bin_iterate_recurse(self.to_glib_none().0)) }
}
fn iterate_sinks(&self) -> ::Iterator<Element> {
unsafe { from_glib_full(ffi::gst_bin_iterate_sinks(self.to_glib_none().0)) }
}
fn iterate_sorted(&self) -> ::Iterator<Element> {
unsafe { from_glib_full(ffi::gst_bin_iterate_sorted(self.to_glib_none().0)) }
}
fn iterate_sources(&self) -> ::Iterator<Element> {
unsafe { from_glib_full(ffi::gst_bin_iterate_sources(self.to_glib_none().0)) }
}
fn get_children(&self) -> Vec<Element> {
unsafe {
let stash = self.to_glib_none();
let bin: &ffi::GstBin = &*stash.0;
::utils::MutexGuard::lock(&bin.element.object.lock);
FromGlibPtrContainer::from_glib_none(bin.children)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use prelude::*;
#[test]
fn test_get_children() {
::init().unwrap();
let bin = ::Bin::new(None);
bin.add(&::ElementFactory::make("identity", "identity0").unwrap())
.unwrap();
bin.add(&::ElementFactory::make("identity", "identity1").unwrap())
.unwrap();
let mut child_names = bin.get_children()
.iter()
.map(|c| c.get_name())
.collect::<Vec<String>>();
child_names.sort();
assert_eq!(
child_names,
vec![String::from("identity0"), String::from("identity1")]
);
}
}