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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 crate::dom::audionode::{AudioNode, MAX_CHANNEL_COUNT};
use crate::dom::baseaudiocontext::BaseAudioContext;
use crate::dom::bindings::codegen::Bindings::AudioNodeBinding::{
ChannelCountMode, ChannelInterpretation,
};
use crate::dom::bindings::codegen::Bindings::ChannelMergerNodeBinding::{
self, ChannelMergerOptions,
};
use crate::dom::bindings::error::{Error, Fallible};
use crate::dom::bindings::reflector::reflect_dom_object;
use crate::dom::bindings::root::DomRoot;
use crate::dom::window::Window;
use dom_struct::dom_struct;
use servo_media::audio::channel_node::ChannelNodeOptions;
use servo_media::audio::node::AudioNodeInit;
#[dom_struct]
pub struct ChannelMergerNode {
node: AudioNode,
}
impl ChannelMergerNode {
#[allow(unrooted_must_root)]
pub fn new_inherited(
_: &Window,
context: &BaseAudioContext,
options: &ChannelMergerOptions,
) -> Fallible<ChannelMergerNode> {
let node_options = options.parent.unwrap_or(
1,
ChannelCountMode::Explicit,
ChannelInterpretation::Speakers,
);
if node_options.count != 1 || node_options.mode != ChannelCountMode::Explicit {
return Err(Error::InvalidState);
}
if options.numberOfInputs < 1 || options.numberOfInputs > MAX_CHANNEL_COUNT {
return Err(Error::IndexSize);
}
let node = AudioNode::new_inherited(
AudioNodeInit::ChannelMergerNode(options.into()),
context,
node_options,
options.numberOfInputs, // inputs
1, // outputs
)?;
Ok(ChannelMergerNode { node })
}
#[allow(unrooted_must_root)]
pub fn new(
window: &Window,
context: &BaseAudioContext,
options: &ChannelMergerOptions,
) -> Fallible<DomRoot<ChannelMergerNode>> {
let node = ChannelMergerNode::new_inherited(window, context, options)?;
Ok(reflect_dom_object(
Box::new(node),
window,
ChannelMergerNodeBinding::Wrap,
))
}
pub fn Constructor(
window: &Window,
context: &BaseAudioContext,
options: &ChannelMergerOptions,
) -> Fallible<DomRoot<ChannelMergerNode>> {
ChannelMergerNode::new(window, context, options)
}
}
impl<'a> From<&'a ChannelMergerOptions> for ChannelNodeOptions {
fn from(options: &'a ChannelMergerOptions) -> Self {
Self {
channels: options.numberOfInputs as u8,
}
}
}
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