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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::audioparam::{AudioParam, AudioParamImpl};
use dom::audioscheduledsourcenode::AudioScheduledSourceNode;
use dom::baseaudiocontext::BaseAudioContext;
use dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
use dom::bindings::codegen::Bindings::AudioNodeBinding::{ChannelCountMode, ChannelInterpretation};
use dom::bindings::codegen::Bindings::OscillatorNodeBinding::{self, OscillatorOptions, OscillatorType};
use dom::bindings::codegen::Bindings::OscillatorNodeBinding::OscillatorNodeMethods;
use dom::bindings::error::Fallible;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::root::DomRoot;
use dom::window::Window;
use dom_struct::dom_struct;
use servo_media::audio::context::AudioContext;
use servo_media::audio::graph::NodeId;
use servo_media::audio::node::{AudioNodeMessage, AudioNodeType};
use servo_media::audio::oscillator_node::OscillatorNodeOptions as ServoMediaOscillatorOptions;
use servo_media::audio::oscillator_node::OscillatorType as ServoMediaOscillatorType;
use servo_media::audio::oscillator_node::OscillatorNodeMessage;
use servo_media::audio::param::{UserAutomationEvent, RampKind};
use std::f32;
use std::rc::Rc;
audio_param_impl!(Frequency, OscillatorNode, OscillatorNodeMessage, SetFrequency);
audio_param_impl!(Detune, OscillatorNode, OscillatorNodeMessage, SetDetune);
#[dom_struct]
pub struct OscillatorNode {
source_node: AudioScheduledSourceNode,
oscillator_type: OscillatorType,
frequency: DomRoot<AudioParam>,
detune: DomRoot<AudioParam>,
}
impl OscillatorNode {
#[allow(unrooted_must_root)]
#[allow(unsafe_code)]
pub fn new_inherited(
window: &Window,
context: &BaseAudioContext,
oscillator_options: &OscillatorOptions,
) -> OscillatorNode {
let mut node_options = unsafe { AudioNodeOptions::empty(window.get_cx()) };
node_options.channelCount = Some(2);
node_options.channelCountMode = Some(ChannelCountMode::Max);
node_options.channelInterpretation = Some(ChannelInterpretation::Speakers);
let source_node = AudioScheduledSourceNode::new_inherited(
AudioNodeType::OscillatorNode(oscillator_options.into()),
context,
&node_options,
0, /* inputs */
1, /* outputs */
);
let node_id = source_node.node().node_id();
let frequency = Frequency::new(context.audio_context_impl(), node_id);
let frequency = AudioParam::new(window,
Box::new(frequency),
AutomationRate::A_rate,
440., f32::MIN, f32::MAX);
let detune = Detune::new(context.audio_context_impl(), node_id);
let detune = AudioParam::new(window,
Box::new(detune),
AutomationRate::A_rate,
0., -440. / 2., 440. / 2.);
OscillatorNode {
source_node,
oscillator_type: oscillator_options.type_,
frequency,
detune,
}
}
#[allow(unrooted_must_root)]
pub fn new(
window: &Window,
context: &BaseAudioContext,
options: &OscillatorOptions,
) -> DomRoot<OscillatorNode> {
let node = OscillatorNode::new_inherited(window, context, options);
reflect_dom_object(Box::new(node), window, OscillatorNodeBinding::Wrap)
}
pub fn Constructor(
window: &Window,
context: &BaseAudioContext,
options: &OscillatorOptions,
) -> Fallible<DomRoot<OscillatorNode>> {
Ok(OscillatorNode::new(window, context, options))
}
}
impl OscillatorNodeMethods for OscillatorNode {
fn Frequency(&self) -> DomRoot<AudioParam> {
DomRoot::from_ref(&self.frequency)
}
fn Detune(&self) -> DomRoot<AudioParam> {
DomRoot::from_ref(&self.detune)
}
}
impl<'a> From<&'a OscillatorOptions> for ServoMediaOscillatorOptions {
fn from(options: &'a OscillatorOptions) -> Self {
Self {
oscillator_type: options.type_.into(),
freq: *options.frequency,
detune: *options.detune,
periodic_wave_options: None, // XXX
}
}
}
impl From<OscillatorType> for ServoMediaOscillatorType {
fn from(oscillator_type: OscillatorType) -> Self {
match oscillator_type {
OscillatorType::Sine => ServoMediaOscillatorType::Sine,
OscillatorType::Square => ServoMediaOscillatorType::Square,
OscillatorType::Sawtooth => ServoMediaOscillatorType::Sawtooth,
OscillatorType::Triangle => ServoMediaOscillatorType::Triangle,
OscillatorType::Custom => ServoMediaOscillatorType::Custom,
}
}
}
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