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Audio context options

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This commit is contained in:
Fernando Jiménez Moreno 2018-06-22 11:04:01 +02:00
parent ba9dfb0293
commit db52d1f65c
2 changed files with 41 additions and 11 deletions
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32
components/script/dom/audiocontext.rs
View file

@ -2,10 +2,10 @@
* 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::baseaudiocontext::BaseAudioContext;
use dom::baseaudiocontext::{BaseAudioContext, BaseAudioContextOptions};
use dom::bindings::codegen::Bindings::AudioContextBinding;
use dom::bindings::codegen::Bindings::AudioContextBinding::AudioContextMethods;
use dom::bindings::codegen::Bindings::AudioContextBinding::{AudioContextOptions, AudioTimestamp};
use dom::bindings::codegen::Bindings::AudioContextBinding::{AudioContextMethods, AudioContextOptions};
use dom::bindings::codegen::Bindings::AudioContextBinding::{AudioContextLatencyCategory, AudioTimestamp};
use dom::bindings::error::Fallible;
use dom::bindings::inheritance::Castable;
use dom::bindings::num::Finite;
@ -15,6 +15,7 @@ use dom::globalscope::GlobalScope;
use dom::promise::Promise;
use dom::window::Window;
use dom_struct::dom_struct;
use servo_media::audio::graph::{LatencyCategory, RealTimeAudioGraphOptions};
use std::rc::Rc;
#[dom_struct]
@ -25,9 +26,9 @@ pub struct AudioContext {
}
impl AudioContext {
fn new_inherited(global: &GlobalScope, sample_rate: f32) -> AudioContext {
fn new_inherited(global: &GlobalScope, options: &AudioContextOptions) -> AudioContext {
AudioContext {
context: BaseAudioContext::new_inherited(global, 2 /* channel_count */, sample_rate),
context: BaseAudioContext::new_inherited(global, BaseAudioContextOptions::AudioContext(options.into())),
base_latency: 0., // TODO
output_latency: 0., // TODO
}
@ -38,7 +39,7 @@ impl AudioContext {
options: &AudioContextOptions) -> DomRoot<AudioContext> {
let context = AudioContext::new_inherited(
global,
*options.sampleRate.unwrap_or(Finite::wrap(0.)),
options,
); // TODO
reflect_dom_object(Box::new(context), global, AudioContextBinding::Wrap)
}
@ -79,3 +80,22 @@ impl AudioContextMethods for AudioContext {
Promise::new(&self.global())
}
}
impl From<AudioContextLatencyCategory> for LatencyCategory {
fn from(category: AudioContextLatencyCategory) -> Self {
match category {
AudioContextLatencyCategory::Balanced => LatencyCategory::Balanced,
AudioContextLatencyCategory::Interactive => LatencyCategory::Interactive,
AudioContextLatencyCategory::Playback => LatencyCategory::Playback,
}
}
}
impl<'a> From<&'a AudioContextOptions> for RealTimeAudioGraphOptions {
fn from(options: &AudioContextOptions) -> Self {
Self {
sample_rate: *options.sampleRate.unwrap_or(Finite::wrap(48000.)),
latency_hint: options.latencyHint.into(),
}
}
}

20
components/script/dom/baseaudiocontext.rs
View file

@ -17,10 +17,16 @@ use dom::oscillatornode::OscillatorNode;
use dom_struct::dom_struct;
use servo_media::ServoMedia;
use servo_media::audio::graph::AudioGraph;
use servo_media::audio::graph::{OfflineAudioGraphOptions, RealTimeAudioGraphOptions};
use servo_media::audio::graph_impl::NodeId;
use servo_media::audio::node::AudioNodeType;
use std::rc::Rc;
pub enum BaseAudioContextOptions {
AudioContext(RealTimeAudioGraphOptions),
OfflineAudioContext(OfflineAudioGraphOptions),
}
#[dom_struct]
pub struct BaseAudioContext {
reflector_: Reflector,
@ -37,12 +43,16 @@ impl BaseAudioContext {
#[allow(unsafe_code)]
pub fn new_inherited(
global: &GlobalScope,
channel_count: u32,
sample_rate: f32,
) -> BaseAudioContext {
options: BaseAudioContextOptions,
) -> BaseAudioContext {
let options = match options {
BaseAudioContextOptions::AudioContext(options) => options,
BaseAudioContextOptions::OfflineAudioContext(_) => unimplemented!(),
};
let sample_rate = options.sample_rate;
let mut context = BaseAudioContext {
reflector_: Reflector::new(),
audio_graph: ServoMedia::get().unwrap().create_audio_graph(),
audio_graph: ServoMedia::get().unwrap().create_audio_graph(Some(options.into())),
destination: None,
current_time: 0.,
sample_rate,
@ -50,7 +60,7 @@ impl BaseAudioContext {
};
let mut options = unsafe { AudioNodeOptions::empty(global.get_cx()) };
options.channelCount = Some(channel_count);
options.channelCount = Some(2);
options.channelCountMode = Some(ChannelCountMode::Explicit);
options.channelInterpretation = Some(ChannelInterpretation::Speakers);