mirror of
https://github.com/servo/servo.git
synced 2025-06-06 16:45:39 +00:00
104 lines
3.5 KiB
Rust
104 lines
3.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use crate::dom::audioparam::AudioParam;
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use crate::dom::audioscheduledsourcenode::AudioScheduledSourceNode;
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use crate::dom::baseaudiocontext::BaseAudioContext;
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use crate::dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
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use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceNodeMethods;
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use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceOptions;
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use crate::dom::bindings::error::Fallible;
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use crate::dom::bindings::reflector::reflect_dom_object2;
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use crate::dom::bindings::root::{Dom, DomRoot};
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use crate::dom::window::Window;
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use dom_struct::dom_struct;
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use js::rust::HandleObject;
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use servo_media::audio::constant_source_node::ConstantSourceNodeOptions as ServoMediaConstantSourceOptions;
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use servo_media::audio::node::AudioNodeInit;
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use servo_media::audio::param::ParamType;
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use std::f32;
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#[dom_struct]
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pub struct ConstantSourceNode {
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source_node: AudioScheduledSourceNode,
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offset: Dom<AudioParam>,
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}
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impl ConstantSourceNode {
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#[allow(unrooted_must_root)]
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fn new_inherited(
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window: &Window,
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context: &BaseAudioContext,
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options: &ConstantSourceOptions,
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) -> Fallible<ConstantSourceNode> {
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let node_options = Default::default();
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let source_node = AudioScheduledSourceNode::new_inherited(
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AudioNodeInit::ConstantSourceNode(options.into()),
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context,
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node_options, /* 2, MAX, Speakers */
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0, /* inputs */
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1, /* outputs */
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)?;
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let node_id = source_node.node().node_id();
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let offset = AudioParam::new(
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window,
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context,
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node_id,
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ParamType::Offset,
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AutomationRate::A_rate,
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*options.offset,
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f32::MIN,
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f32::MAX,
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);
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Ok(ConstantSourceNode {
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source_node,
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offset: Dom::from_ref(&offset),
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})
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}
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pub fn new(
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window: &Window,
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context: &BaseAudioContext,
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options: &ConstantSourceOptions,
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) -> Fallible<DomRoot<ConstantSourceNode>> {
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Self::new_with_proto(window, None, context, options)
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}
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#[allow(unrooted_must_root)]
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fn new_with_proto(
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window: &Window,
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proto: Option<HandleObject>,
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context: &BaseAudioContext,
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options: &ConstantSourceOptions,
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) -> Fallible<DomRoot<ConstantSourceNode>> {
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let node = ConstantSourceNode::new_inherited(window, context, options)?;
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Ok(reflect_dom_object2(Box::new(node), window, proto))
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}
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#[allow(non_snake_case)]
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pub fn Constructor(
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window: &Window,
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proto: Option<HandleObject>,
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context: &BaseAudioContext,
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options: &ConstantSourceOptions,
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) -> Fallible<DomRoot<ConstantSourceNode>> {
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ConstantSourceNode::new_with_proto(window, proto, context, options)
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}
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}
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impl ConstantSourceNodeMethods for ConstantSourceNode {
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// https://webaudio.github.io/web-audio-api/#dom-constantsourcenode-offset
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fn Offset(&self) -> DomRoot<AudioParam> {
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DomRoot::from_ref(&self.offset)
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}
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}
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impl<'a> From<&'a ConstantSourceOptions> for ServoMediaConstantSourceOptions {
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fn from(options: &'a ConstantSourceOptions) -> Self {
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Self {
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offset: *options.offset,
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}
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}
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}
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