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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::audionode::AudioNode;
use dom::baseaudiocontext::BaseAudioContext;
use dom::bindings::codegen::Bindings::AudioScheduledSourceNodeBinding::AudioScheduledSourceNodeMethods;
use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
use dom::bindings::error::{Error, Fallible};
use dom::bindings::num::Finite;
use dom_struct::dom_struct;
use servo_media::audio::node::{AudioNodeMessage, AudioNodeInit, AudioScheduledSourceNodeMessage};
use std::cell::Cell;
#[dom_struct]
pub struct AudioScheduledSourceNode {
node: AudioNode,
started: Cell<bool>,
stopped: Cell<bool>,
}
impl AudioScheduledSourceNode {
pub fn new_inherited(
node_type: AudioNodeInit,
context: &BaseAudioContext,
options: &AudioNodeOptions,
number_of_inputs: u32,
number_of_outputs: u32,
) -> AudioScheduledSourceNode {
AudioScheduledSourceNode {
node: AudioNode::new_inherited(
node_type,
None, /* node_id */
context,
options,
number_of_inputs,
number_of_outputs,
),
started: Cell::new(false),
stopped: Cell::new(false),
}
}
pub fn node(&self) -> &AudioNode {
&self.node
}
pub fn started(&self) -> bool {
self.started.get()
}
}
impl AudioScheduledSourceNodeMethods for AudioScheduledSourceNode {
// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-onended
// XXX We should dispatch this when we reach the end. Depends on servo-media #82.
event_handler!(ended, GetOnended, SetOnended);
// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-start
fn Start(&self, when: Finite<f64>) -> Fallible<()> {
if self.started.get() || self.stopped.get() {
return Err(Error::InvalidState);
}
self.started.set(true);
self.node
.message(AudioNodeMessage::AudioScheduledSourceNode(
AudioScheduledSourceNodeMessage::Start(*when),
));
Ok(())
}
// https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-stop
fn Stop(&self, when: Finite<f64>) -> Fallible<()> {
if !self.started.get() {
return Err(Error::InvalidState);
}
self.stopped.set(true);
self.node
.message(AudioNodeMessage::AudioScheduledSourceNode(
AudioScheduledSourceNodeMessage::Stop(*when),
));
Ok(())
}
}
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