ISSUE-21803: implement ConstantSourceNode audionode

This commit is contained in:
Thomas Delacour 2019-08-02 08:50:07 -04:00 committed by Thomas Delacour
parent 18c500ecc8
commit 6027dd148a
18 changed files with 238 additions and 159 deletions

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@ -24,6 +24,7 @@ use crate::dom::bindings::codegen::Bindings::BaseAudioContextBinding::DecodeSucc
use crate::dom::bindings::codegen::Bindings::BiquadFilterNodeBinding::BiquadFilterOptions;
use crate::dom::bindings::codegen::Bindings::ChannelMergerNodeBinding::ChannelMergerOptions;
use crate::dom::bindings::codegen::Bindings::ChannelSplitterNodeBinding::ChannelSplitterOptions;
use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceOptions;
use crate::dom::bindings::codegen::Bindings::GainNodeBinding::GainOptions;
use crate::dom::bindings::codegen::Bindings::OscillatorNodeBinding::OscillatorOptions;
use crate::dom::bindings::codegen::Bindings::PannerNodeBinding::PannerOptions;
@ -37,6 +38,7 @@ use crate::dom::bindings::root::{DomRoot, MutNullableDom};
use crate::dom::biquadfilternode::BiquadFilterNode;
use crate::dom::channelmergernode::ChannelMergerNode;
use crate::dom::channelsplitternode::ChannelSplitterNode;
use crate::dom::constantsourcenode::ConstantSourceNode;
use crate::dom::domexception::{DOMErrorName, DOMException};
use crate::dom::eventtarget::EventTarget;
use crate::dom::gainnode::GainNode;
@ -378,6 +380,15 @@ impl BaseAudioContextMethods for BaseAudioContext {
)
}
/// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createconstantsource
fn CreateConstantSource(&self) -> Fallible<DomRoot<ConstantSourceNode>> {
ConstantSourceNode::new(
&self.global().as_window(),
&self,
&ConstantSourceOptions::empty(),
)
}
/// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createchannelmerger
fn CreateChannelMerger(&self, count: u32) -> Fallible<DomRoot<ChannelMergerNode>> {
let mut opts = ChannelMergerOptions::empty();

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@ -0,0 +1,98 @@
/* 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 https://mozilla.org/MPL/2.0/. */
use crate::dom::audioparam::AudioParam;
use crate::dom::audioscheduledsourcenode::AudioScheduledSourceNode;
use crate::dom::baseaudiocontext::BaseAudioContext;
use crate::dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceNodeMethods;
use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::{
self, ConstantSourceOptions,
};
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::reflect_dom_object;
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::window::Window;
use dom_struct::dom_struct;
use servo_media::audio::constant_source_node::ConstantSourceNodeOptions as ServoMediaConstantSourceOptions;
use servo_media::audio::node::AudioNodeInit;
use servo_media::audio::param::ParamType;
use std::f32;
#[dom_struct]
pub struct ConstantSourceNode {
source_node: AudioScheduledSourceNode,
offset: Dom<AudioParam>,
}
impl ConstantSourceNode {
#[allow(unrooted_must_root)]
fn new_inherited(
window: &Window,
context: &BaseAudioContext,
options: &ConstantSourceOptions,
) -> Fallible<ConstantSourceNode> {
let node_options = Default::default();
let source_node = AudioScheduledSourceNode::new_inherited(
AudioNodeInit::ConstantSourceNode(options.into()),
context,
node_options, /* 2, MAX, Speakers */
0, /* inputs */
1, /* outputs */
)?;
let node_id = source_node.node().node_id();
let offset = AudioParam::new(
window,
context,
node_id,
ParamType::Offset,
AutomationRate::A_rate,
*options.offset,
f32::MIN,
f32::MAX,
);
Ok(ConstantSourceNode {
source_node,
offset: Dom::from_ref(&offset),
})
}
#[allow(unrooted_must_root)]
pub fn new(
window: &Window,
context: &BaseAudioContext,
options: &ConstantSourceOptions,
) -> Fallible<DomRoot<ConstantSourceNode>> {
let node = ConstantSourceNode::new_inherited(window, context, options)?;
Ok(reflect_dom_object(
Box::new(node),
window,
ConstantSourceNodeBinding::Wrap,
))
}
pub fn Constructor(
window: &Window,
context: &BaseAudioContext,
options: &ConstantSourceOptions,
) -> Fallible<DomRoot<ConstantSourceNode>> {
ConstantSourceNode::new(window, context, options)
}
}
impl ConstantSourceNodeMethods for ConstantSourceNode {
// https://webaudio.github.io/web-audio-api/#dom-constantsourcenode-offset
fn Offset(&self) -> DomRoot<AudioParam> {
DomRoot::from_ref(&self.offset)
}
}
impl<'a> From<&'a ConstantSourceOptions> for ServoMediaConstantSourceOptions {
fn from(options: &'a ConstantSourceOptions) -> Self {
Self {
offset: *options.offset,
}
}
}

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@ -254,6 +254,7 @@ pub mod closeevent;
pub mod comment;
pub mod compositionevent;
pub mod console;
pub mod constantsourcenode;
mod create;
pub mod crypto;
pub mod css;

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@ -31,7 +31,7 @@ interface BaseAudioContext : EventTarget {
optional DecodeSuccessCallback successCallback,
optional DecodeErrorCallback errorCallback);
[Throws] AudioBufferSourceNode createBufferSource();
// ConstantSourceNode createConstantSource();
[Throws] ConstantSourceNode createConstantSource();
// ScriptProcessorNode createScriptProcessor(optional unsigned long bufferSize = 0,
// optional unsigned long numberOfInputChannels = 2,
// optional unsigned long numberOfOutputChannels = 2);

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@ -0,0 +1,17 @@
/* 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 https://mozilla.org/MPL/2.0/. */
/*
* The origin of this IDL file is
* https://webaudio.github.io/web-audio-api/#ConstantSourceNode
*/
dictionary ConstantSourceOptions: AudioNodeOptions {
float offset = 1;
};
[Exposed=Window,
Constructor (BaseAudioContext context, optional ConstantSourceOptions options = {})]
interface ConstantSourceNode : AudioScheduledSourceNode {
readonly attribute AudioParam offset;
};