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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, MAX_CHANNEL_COUNT};
use dom::baseaudiocontext::BaseAudioContext;
use dom::bindings::codegen::Bindings::AudioNodeBinding::{ChannelCountMode, ChannelInterpretation};
use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
use dom::bindings::codegen::Bindings::ChannelMergerNodeBinding::{self, ChannelMergerOptions};
use dom::bindings::error::{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::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 mut node_options = AudioNodeOptions::empty();
let count = options.parent.channelCount.unwrap_or(1);
let mode = options.parent.channelCountMode.unwrap_or(ChannelCountMode::Explicit);
let interpretation = options.parent.channelInterpretation.unwrap_or(ChannelInterpretation::Speakers);
if count != 1 || mode != ChannelCountMode::Explicit {
return Err(Error::InvalidState)
}
if options.numberOfInputs < 1 || options.numberOfInputs > MAX_CHANNEL_COUNT {
return Err(Error::IndexSize)
}
node_options.channelCount = Some(count);
node_options.channelCountMode = Some(mode);
node_options.channelInterpretation = Some(interpretation);
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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