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AudioContext construction

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This commit is contained in:
Fernando Jiménez Moreno 2018-06-22 12:47:19 +02:00
parent 7e04031a95
commit 98741ddf84
2 changed files with 66 additions and 5 deletions
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25
components/script/dom/audiocontext.rs
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@ -21,14 +21,36 @@ use std::rc::Rc;
#[dom_struct]
pub struct AudioContext {
context: BaseAudioContext,
latency_hint: AudioContextLatencyCategory,
/// https://webaudio.github.io/web-audio-api/#dom-audiocontext-baselatency
base_latency: f64,
/// https://webaudio.github.io/web-audio-api/#dom-audiocontext-outputlatency
output_latency: f64,
}
impl AudioContext {
#[allow(unrooted_must_root)]
// https://webaudio.github.io/web-audio-api/#AudioContext-constructors
fn new_inherited(global: &GlobalScope, options: &AudioContextOptions) -> AudioContext {
// Steps 1-3.
let context = BaseAudioContext::new_inherited(global, BaseAudioContextOptions::AudioContext(options.into()));
// Step 4.1.
let latency_hint = options.latencyHint;
// Step 4.2. The sample rate is set during the creation of the BaseAudioContext.
// servo-media takes care of setting the default sample rate of the output device
// and of resampling the audio output if needed.
// Step 5.
if context.is_allowed_to_start() {
// Step 6.
context.resume();
}
AudioContext {
context: BaseAudioContext::new_inherited(global, BaseAudioContextOptions::AudioContext(options.into())),
context,
latency_hint,
base_latency: 0., // TODO
output_latency: 0., // TODO
}
@ -44,6 +66,7 @@ impl AudioContext {
reflect_dom_object(Box::new(context), global, AudioContextBinding::Wrap)
}
// https://webaudio.github.io/web-audio-api/#AudioContext-constructors
pub fn Constructor(window: &Window,
options: &AudioContextOptions) -> Fallible<DomRoot<AudioContext>> {
let global = window.upcast::<GlobalScope>();