Constant source node DOM

components/script/dom/baseaudiocontext.rs

@@ -21,6 +21,7 @@ use crate::dom::bindings::codegen::Bindings::BaseAudioContextBinding::BaseAudioC
 use crate::dom::bindings::codegen::Bindings::BaseAudioContextBinding::DecodeErrorCallback;
 use crate::dom::bindings::codegen::Bindings::BaseAudioContextBinding::DecodeSuccessCallback;
 use crate::dom::bindings::codegen::Bindings::BiquadFilterNodeBinding::BiquadFilterOptions;
+use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceOptions;
 use crate::dom::bindings::codegen::Bindings::ChannelMergerNodeBinding::ChannelMergerOptions;
 use crate::dom::bindings::codegen::Bindings::ChannelSplitterNodeBinding::ChannelSplitterOptions;
 use crate::dom::bindings::codegen::Bindings::GainNodeBinding::GainOptions;
@@ -35,6 +36,7 @@ use crate::dom::bindings::root::{DomRoot, MutNullableDom};
 use crate::dom::biquadfilternode::BiquadFilterNode;
 use crate::dom::channelmergernode::ChannelMergerNode;
 use crate::dom::channelsplitternode::ChannelSplitterNode;
+use crate::dom::constantsourcenode::ConstantSourceNode;
 use crate::dom::domexception::{DOMErrorName, DOMException};
 use crate::dom::eventtarget::EventTarget;
 use crate::dom::gainnode::GainNode;
@@ -355,6 +357,15 @@ impl BaseAudioContextMethods for BaseAudioContext {
         )
     }
 
+    /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createconstantsource
+    fn CreateConstantSource(&self) -> Fallible<DomRoot<ConstantSourceNode>> {
+        ConstantSourceNode::new(
+            &self.global().as_window(),
+            &self,
+            &ConstantSourceOptions::empty(),
+        )
+    }
+
     /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createchannelmerger
     fn CreateChannelMerger(&self, count: u32) -> Fallible<DomRoot<ChannelMergerNode>> {
         let mut opts = ChannelMergerOptions::empty();

components/script/dom/constantsourcenode.rs

@@ -0,0 +1,103 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+use crate::dom::audioparam::AudioParam;
+use crate::dom::audioscheduledsourcenode::AudioScheduledSourceNode;
+use crate::dom::baseaudiocontext::BaseAudioContext;
+use crate::dom::bindings::codegen::Bindings::AudioNodeBinding::{
+    ChannelCountMode, ChannelInterpretation,
+};
+use crate::dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
+use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::ConstantSourceNodeMethods;
+use crate::dom::bindings::codegen::Bindings::ConstantSourceNodeBinding::{
+    self, ConstantSourceOptions,
+};
+use crate::dom::bindings::error::Fallible;
+use crate::dom::bindings::reflector::reflect_dom_object;
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::window::Window;
+use dom_struct::dom_struct;
+use servo_media::audio::constant_source_node::ConstantSourceNodeOptions as ServoMediaConstantSourceOptions;
+use servo_media::audio::node::AudioNodeInit;
+use servo_media::audio::param::ParamType;
+use std::f32;
+
+#[dom_struct]
+pub struct ConstantSourceNode {
+    source_node: AudioScheduledSourceNode,
+    offset: Dom<AudioParam>,
+}
+
+impl ConstantSourceNode {
+    #[allow(unrooted_must_root)]
+    pub fn new_inherited(
+        window: &Window,
+        context: &BaseAudioContext,
+        options: &ConstantSourceOptions,
+    ) -> Fallible<ConstantSourceNode> {
+        let node_options =
+            options
+                .parent
+                .unwrap_or(2, ChannelCountMode::Max, ChannelInterpretation::Speakers);
+        let source_node = AudioScheduledSourceNode::new_inherited(
+            AudioNodeInit::ConstantSourceNode(options.into()),
+            context,
+            node_options,
+            0, /* inputs */
+            1, /* outputs */
+        )?;
+        let node_id = source_node.node().node_id();
+        let offset = AudioParam::new(
+            window,
+            context,
+            node_id,
+            ParamType::Offset,
+            AutomationRate::A_rate,
+            1.,
+            f32::MIN,
+            f32::MAX,
+        );
+
+        Ok(ConstantSourceNode {
+            source_node,
+            offset: Dom::from_ref(&offset),
+        })
+    }
+
+    #[allow(unrooted_must_root)]
+    pub fn new(
+        window: &Window,
+        context: &BaseAudioContext,
+        options: &ConstantSourceOptions,
+    ) -> Fallible<DomRoot<ConstantSourceNode>> {
+        let node = ConstantSourceNode::new_inherited(window, context, options)?;
+        Ok(reflect_dom_object(
+            Box::new(node),
+            window,
+            ConstantSourceNodeBinding::Wrap,
+        ))
+    }
+
+    pub fn Constructor(
+        window: &Window,
+        context: &BaseAudioContext,
+        options: &ConstantSourceOptions,
+    ) -> Fallible<DomRoot<ConstantSourceNode>> {
+        ConstantSourceNode::new(window, context, options)
+    }
+}
+
+impl ConstantSourceNodeMethods for ConstantSourceNode {
+    fn Offset(&self) -> DomRoot<AudioParam> {
+        DomRoot::from_ref(&self.offset)
+    }
+}
+
+impl<'a> From<&'a ConstantSourceOptions> for ServoMediaConstantSourceOptions {
+    fn from(options: &'a ConstantSourceOptions) -> Self {
+        Self {
+            offset: *options.offset,
+        }
+    }
+}

components/script/dom/mod.rs

@@ -254,6 +254,7 @@ pub mod closeevent;
 pub mod comment;
 pub mod compositionevent;
 pub mod console;
+pub mod constantsourcenode;
 mod create;
 pub mod crypto;
 pub mod css;

components/script/dom/webidls/BaseAudioContext.webidl

@@ -31,7 +31,7 @@ interface BaseAudioContext : EventTarget {
                                        optional DecodeSuccessCallback successCallback,
                                        optional DecodeErrorCallback errorCallback);
   [Throws] AudioBufferSourceNode createBufferSource();
-  // ConstantSourceNode createConstantSource();
+  [Throws] ConstantSourceNode createConstantSource();
   // ScriptProcessorNode createScriptProcessor(optional unsigned long bufferSize = 0,
   //                                           optional unsigned long numberOfInputChannels = 2,
   //                                           optional unsigned long numberOfOutputChannels = 2);

components/script/dom/webidls/ConstantSourceNode.webidl

@@ -0,0 +1,17 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+/*
+ * The origin of this IDL file is
+ * https://webaudio.github.io/web-audio-api/#ConstantSourceNode
+ */
+
+dictionary ConstantSourceOptions: AudioNodeOptions {
+  float offset = 1;
+};
+
+[Exposed=Window,
+ Constructor (BaseAudioContext context, optional ConstantSourceOptions options)]
+interface ConstantSourceNode : AudioScheduledSourceNode {
+  readonly attribute AudioParam offset;
+};

tests/wpt/metadata/webaudio/the-audio-api/the-constantsourcenode-interface/constant-source-basic.html.ini

@@ -1,5 +1,4 @@
 [constant-source-basic.html]
-  expected: ERROR
   [X Factory method: node = context.createConstantSource() incorrectly threw TypeError: "context.createConstantSource is not a function".]
     expected: FAIL
 

tests/wpt/metadata/webaudio/the-audio-api/the-constantsourcenode-interface/constant-source-output.html.ini

@@ -1,2 +1,22 @@
 [constant-source-output.html]
-  expected: ERROR
+  [X Connected param: ConstantSourceNode frames [10, 6000) does not equal [1.5446391105651855,1.5920131206512451,1.6374239921569824,1.6807208061218262,1.7217602729797363,1.7604060173034668,1.7965298891067505,1.830012321472168,1.8607419729232788,1.8886172771453857,1.9135454893112183,1.9354441165924072,1.954240322113037,1.969871997833252,1.9822871685028076,1.9914448261260986...\] with an element-wise tolerance of {"absoluteThreshold":0,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[119\]\t1.9689673185348511e+0\t1.9114032983779907e+0\t5.7564020156860352e-2\t3.0116103810069256e-2\t0.0000000000000000e+0\n\t[120\]\t2.0485177040100098e+0\t1.9335803985595703e+0\t1.1493730545043945e-1\t5.9442734078222211e-2\t0.0000000000000000e+0\n\t[121\]\t2.1245903968811035e+0\t1.9526615142822266e+0\t1.7192888259887695e-1\t8.8048482208180262e-2\t0.0000000000000000e+0\n\t[122\]\t2.1969339847564697e+0\t1.9685831069946289e+0\t2.2835087776184082e-1\t1.1599758067133706e-1\t0.0000000000000000e+0\n\t[123\]\t2.2653079032897949e+0\t1.9812927246093750e+0\t2.8401517868041992e-1\t1.4334841851115937e-1\t0.0000000000000000e+0\n\t...and 122 more errors.\n\tMax AbsError of 9.9994510412216187e-1 at index of 200.\n\t[200\]\t-4.5393562316894531e-1\t5.4600948095321655e-1\t9.9994510412216187e-1\t1.8313694889994769e+0\t0.0000000000000000e+0\n\tMax RelError of 3.4132869565217392e+4 at index of 181.\n\t[181\]\t-4.6791613101959229e-1\t1.3709068298339844e-5\t4.6792984008789063e-1\t3.4132869565217392e+4\t0.0000000000000000e+0\n]
+    expected: FAIL
+
+  [< [connected audioparam\] 1 out of 2 assertions were failed.]
+    expected: FAIL
+
+  [< [basic automation\] 1 out of 2 assertions were failed.]
+    expected: FAIL
+
+  [X Automation: ConstantSourceNode.linearRamp(1, 0.5) does not equal [0.5,0.5001666666666666,0.5003333333333333,0.5005,0.5006666666666667,0.5008333333333334,0.501,0.5011666666666666,0.5013333333333333,0.5015,0.5016666666666667,0.5018333333333334,0.502,0.5021666666666667,0.5023333333333333,0.5025...\] with an element-wise tolerance of {"absoluteThreshold":0,"relativeThreshold":7.161e-7}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t5.0000000000000000e-1\t5.0016666666666665e-1\t1.6666666666664831e-4\t3.3322225924688100e-4\t3.5816935000000001e-7\n\t[2\]\t5.0016671419143677e-1\t5.0033333333333330e-1\t1.6661914189652904e-4\t3.3301627294442850e-4\t3.5828869999999996e-7\n\t[3\]\t5.0033342838287354e-1\t5.0049999999999994e-1\t1.6657161712640978e-4\t3.3281042382899057e-4\t3.5840804999999996e-7\n\t[4\]\t5.0050014257431030e-1\t5.0066666666666670e-1\t1.6652409235640153e-4\t3.3260471176378465e-4\t3.5852740000000001e-7\n\t[5\]\t5.0066691637039185e-1\t5.0083333333333335e-1\t1.6641696294150687e-4\t3.3228012567355778e-4\t3.5864675000000001e-7\n\t...and 2982 more errors.\n\tMax AbsError of 1.6666666666664831e-4 at index of 1.\n\tMax RelError of 3.3322225924688100e-4 at index of 1.\n]
+    expected: FAIL
+
+  [X start/stop: ConstantSourceNode frames [300, 6000): Expected 0 for all values but found 1 unexpected values: \n\tIndex\tActual\n\t[0\]\t1]
+    expected: FAIL
+
+  [< [start/stop\] 1 out of 3 assertions were failed.]
+    expected: FAIL
+
+  [# AUDIT TASK RUNNER FINISHED: 3 out of 6 tasks were failed.]
+    expected: FAIL
+

tests/wpt/metadata/webaudio/the-audio-api/the-constantsourcenode-interface/ctor-constantsource.html.ini

@@ -1,5 +1,4 @@
 [ctor-constantsource.html]
-  expected: ERROR
   [X node0 = new ConstantSourceNode(context) incorrectly threw TypeError: "window[name\] is not a constructor".]
     expected: FAIL
 

tests/wpt/metadata/webaudio/the-audio-api/the-constantsourcenode-interface/test-constantsourcenode.html.ini

@@ -1,19 +1,4 @@
 [test-constantsourcenode.html]
-  [ConstantSourceNode with no automation]
-    expected: FAIL
-
-  [ConstantSourceNode stop and start]
-    expected: FAIL
-
-  [ConstantSourceNode onended event]
-    expected: FAIL
-
-  [ConstantSourceNode can be constructed]
-    expected: FAIL
-
-  [ConstantSourceNode with automation]
-    expected: FAIL
-
   [ConstantSourceNode start and stop when work]
     expected: FAIL