Initial AudioParam bindings

8 files changed, 187 insertions, 55 deletions

diff --git a/components/script/dom/audionode.rs b/components/script/dom/audionode.rs
index 39685b5db87..e6eea52d5f5 100644
--- a/components/script/dom/audionode.rs
+++ b/components/script/dom/audionode.rs
@@ -58,7 +58,7 @@ impl AudioNode {
         self.context.audio_context_impl().message_node(self.node_id, message);
     }
 
-    pub fn node(&self) -> NodeId {
+    pub fn node_id(&self) -> NodeId {
         self.node_id
     }
 }
@@ -81,7 +81,7 @@ impl AudioNodeMethods for AudioNode {
         // XXX Check previous connections.
 
         self.context.audio_context_impl().connect_ports(
-            self.node().output(output), destination.node().input(input)
+            self.node_id().output(output), destination.node_id().input(input)
             );
 
         Ok(DomRoot::from_ref(destination))
diff --git a/components/script/dom/audioparam.rs b/components/script/dom/audioparam.rs
index 1b42af0a4e5..b5bad9fcb9b 100644
--- a/components/script/dom/audioparam.rs
+++ b/components/script/dom/audioparam.rs
@@ -3,30 +3,44 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::AudioParamBinding;
-use dom::bindings::codegen::Bindings::AudioParamBinding::AudioParamMethods;
+use dom::bindings::codegen::Bindings::AudioParamBinding::{AudioParamMethods, AutomationRate};
 use dom::bindings::num::Finite;
 use dom::bindings::reflector::{Reflector, reflect_dom_object};
 use dom::bindings::root::DomRoot;
-use dom::globalscope::GlobalScope;
+use dom::bindings::trace::JSTraceable;
+use dom::window::Window;
 use dom_struct::dom_struct;
+use malloc_size_of::MallocSizeOf;
+use servo_media::audio::param::RampKind;
 use std::cell::Cell;
 
+pub trait AudioParamImpl: JSTraceable + MallocSizeOf {
+    fn set_value(&self, value: f32);
+    fn set_value_at_time(&self, value: f32, start_time: f64);
+    fn ramp_to_value_at_time(&self, ramp_kind: RampKind, value: f32, end_time: f64);
+    fn set_target_at_time(&self, value: f32, start_time: f64, time_constant: f32);
+}
+
 #[dom_struct]
 pub struct AudioParam {
     reflector_: Reflector,
-    value: Cell<f32>,
+    param_impl: Box<AudioParamImpl>,
+    automation_rate: Cell<AutomationRate>,
     default_value: f32,
     min_value: f32,
     max_value: f32,
 }
 
 impl AudioParam {
-    pub fn new_inherited(default_value: f32,
+    pub fn new_inherited(param_impl: Box<AudioParamImpl>,
+                         automation_rate: AutomationRate,
+                         default_value: f32,
                          min_value: f32,
                          max_value: f32) -> AudioParam {
         AudioParam {
             reflector_: Reflector::new(),
-            value: Cell::new(default_value),
+            param_impl,
+            automation_rate: Cell::new(automation_rate),
             default_value,
             min_value,
             max_value,
@@ -34,22 +48,35 @@ impl AudioParam {
     }
 
     #[allow(unrooted_must_root)]
-    pub fn new(global: &GlobalScope,
+    pub fn new(window: &Window,
+               param_impl: Box<AudioParamImpl>,
+               automation_rate: AutomationRate,
                default_value: f32,
                min_value: f32,
                max_value: f32) -> DomRoot<AudioParam> {
-        let audio_param = AudioParam::new_inherited(default_value, min_value, max_value);
-        reflect_dom_object(Box::new(audio_param), global, AudioParamBinding::Wrap)
+        let audio_param = AudioParam::new_inherited(param_impl, automation_rate,
+                                                    default_value, min_value, max_value);
+        reflect_dom_object(Box::new(audio_param), window, AudioParamBinding::Wrap)
     }
 }
 
 impl AudioParamMethods for AudioParam {
+    fn AutomationRate(&self) -> AutomationRate {
+        self.automation_rate.get()
+    }
+
+    fn SetAutomationRate(&self, automation_rate: AutomationRate) {
+        self.automation_rate.set(automation_rate);
+        // XXX set servo-media param automation rate
+    }
+
     fn Value(&self) -> Finite<f32> {
-        Finite::wrap(self.value.get())
+        // XXX
+        Finite::wrap(0.)
     }
 
     fn SetValue(&self, value: Finite<f32>) {
-        self.value.set(*value);
+        self.param_impl.set_value(*value);
     }
 
     fn DefaultValue(&self) -> Finite<f32> {
@@ -63,4 +90,32 @@ impl AudioParamMethods for AudioParam {
     fn MaxValue(&self) -> Finite<f32> {
         Finite::wrap(self.max_value)
     }
+
+    fn SetValueAtTime(&self, value: Finite<f32>, start_time: Finite<f64>)
+        -> DomRoot<AudioParam>
+    {
+        self.param_impl.set_value_at_time(*value, *start_time);
+        DomRoot::from_ref(self)
+    }
+
+    fn LinearRampToValueAtTime(&self, value: Finite<f32>, end_time: Finite<f64>)
+        -> DomRoot<AudioParam>
+    {
+        self.param_impl.ramp_to_value_at_time(RampKind::Linear, *value, *end_time);
+        DomRoot::from_ref(self)
+    }
+
+    fn ExponentialRampToValueAtTime(&self, value: Finite<f32>, end_time: Finite<f64>)
+        -> DomRoot<AudioParam>
+    {
+        self.param_impl.ramp_to_value_at_time(RampKind::Exponential, *value, *end_time);
+        DomRoot::from_ref(self)
+    }
+
+    fn SetTargetAtTime(&self, target: Finite<f32>, start_time: Finite<f64>, time_constant: Finite<f32>)
+        -> DomRoot<AudioParam>
+    {
+        self.param_impl.set_target_at_time(*target, *start_time, *time_constant);
+        DomRoot::from_ref(self)
+    }
 }
diff --git a/components/script/dom/audioscheduledsourcenode.rs b/components/script/dom/audioscheduledsourcenode.rs
index 6e430cf8fed..8c8240fdf67 100644
--- a/components/script/dom/audioscheduledsourcenode.rs
+++ b/components/script/dom/audioscheduledsourcenode.rs
@@ -7,6 +7,7 @@ use dom::bindings::codegen::Bindings::AudioScheduledSourceNodeBinding::AudioSche
 use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
 use dom::bindings::num::Finite;
 use dom_struct::dom_struct;
+use servo_media::audio::graph::NodeId;
 use servo_media::audio::node::{AudioNodeMessage, AudioNodeType, AudioScheduledSourceNodeMessage};
 
 #[dom_struct]
@@ -25,6 +26,10 @@ impl AudioScheduledSourceNode {
                                            context, options, number_of_inputs, number_of_outputs),
         }
     }
+
+    pub fn node_id(&self) -> NodeId {
+        self.node.node_id()
+    }
 }
 
 impl AudioScheduledSourceNodeMethods for AudioScheduledSourceNode {
diff --git a/components/script/dom/baseaudiocontext.rs b/components/script/dom/baseaudiocontext.rs
index 16fd60c02f9..61bdbe03770 100644
--- a/components/script/dom/baseaudiocontext.rs
+++ b/components/script/dom/baseaudiocontext.rs
@@ -40,7 +40,7 @@ pub enum BaseAudioContextOptions {
 pub struct BaseAudioContext {
     eventtarget: EventTarget,
     #[ignore_malloc_size_of = "servo_media"]
-    audio_context_impl: AudioContext,
+    audio_context_impl: Rc<AudioContext>,
     /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-destination
     destination: Option<DomRoot<AudioDestinationNode>>,
     /// Resume promises which are soon to be fulfilled by a queued task.
@@ -75,7 +75,7 @@ impl BaseAudioContext {
 
         let mut context = BaseAudioContext {
             eventtarget: EventTarget::new_inherited(),
-            audio_context_impl: ServoMedia::get().unwrap().create_audio_context(options.into()),
+            audio_context_impl: Rc::new(ServoMedia::get().unwrap().create_audio_context(options.into())),
             destination: None,
             in_flight_resume_promises_queue: Default::default(),
             pending_resume_promises: Default::default(),
@@ -93,8 +93,8 @@ impl BaseAudioContext {
         context
     }
 
-    pub fn audio_context_impl(&self) -> &AudioContext {
-        &self.audio_context_impl
+    pub fn audio_context_impl(&self) -> Rc<AudioContext> {
+        self.audio_context_impl.clone()
     }
 
     pub fn destination_node(&self) -> NodeId {
@@ -183,9 +183,8 @@ impl BaseAudioContext {
                     this.fulfill_in_flight_resume_promises(|| {
                         if this.state.get() != AudioContextState::Running {
                             this.state.set(AudioContextState::Running);
-                            //XXX this.upcast::<EventTarget>().fire_event(atom!("statechange"));
+                            this.upcast::<EventTarget>().fire_event(atom!("statechange"));
                         }
-
                     });
                 }), window.upcast());
             },
diff --git a/components/script/dom/macros.rs b/components/script/dom/macros.rs
index b2963305aa6..1d8ea2f371d 100644
--- a/components/script/dom/macros.rs
+++ b/components/script/dom/macros.rs
@@ -629,3 +629,56 @@ macro_rules! handle_potential_webgl_error {
         handle_potential_webgl_error!($context, $call, ());
     };
 }
+
+macro_rules! audio_param_impl(
+    ($struct:ident, $node_type:ident, $message_type:ident, $setter:ident) => (
+        #[derive(JSTraceable, MallocSizeOf)]
+        struct $struct {
+            #[ignore_malloc_size_of = "Rc"]
+            context: Rc<AudioContext>,
+            #[ignore_malloc_size_of = "servo_media"]
+            node: NodeId,
+        }
+
+        impl $struct {
+            pub fn new(context: Rc<AudioContext>,
+                       node: NodeId) -> Self {
+                Self {
+                    context,
+                    node,
+                }
+            }
+        }
+
+        impl AudioParamImpl for $struct {
+            fn set_value(&self, _value: f32) {}
+
+            fn set_value_at_time(&self, value: f32, start_time: f64) {
+                self.context.message_node(
+                    self.node,
+                    AudioNodeMessage::$node_type($message_type::$setter(
+                        UserAutomationEvent::SetValueAtTime(value, start_time),
+                    )),
+                );
+            }
+
+            fn ramp_to_value_at_time(&self, ramp_kind: RampKind, value: f32, end_time: f64) {
+                self.context.message_node(
+                    self.node,
+                    AudioNodeMessage::$node_type($message_type::$setter(
+                        UserAutomationEvent::RampToValueAtTime(ramp_kind, value, end_time),
+                    )),
+                );
+            }
+
+            fn set_target_at_time(&self, target: f32, start_time: f64, time_constant: f32) {
+                self.context.message_node(
+                    self.node,
+                    AudioNodeMessage::$node_type($message_type::$setter(
+                        UserAutomationEvent::SetTargetAtTime(target, start_time, time_constant.into()),
+                    )),
+                );
+            }
+        }
+    );
+);
diff --git a/components/script/dom/oscillatornode.rs b/components/script/dom/oscillatornode.rs
index a6e65260ce1..77d169feac8 100644
--- a/components/script/dom/oscillatornode.rs
+++ b/components/script/dom/oscillatornode.rs
@@ -2,26 +2,38 @@
  * 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::audioparam::{AudioParam, AudioParamImpl};
 use dom::audioscheduledsourcenode::AudioScheduledSourceNode;
 use dom::baseaudiocontext::BaseAudioContext;
+use dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
 use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
 use dom::bindings::codegen::Bindings::AudioNodeBinding::{ChannelCountMode, ChannelInterpretation};
 use dom::bindings::codegen::Bindings::OscillatorNodeBinding::{self, OscillatorOptions, OscillatorType};
+use dom::bindings::codegen::Bindings::OscillatorNodeBinding::OscillatorNodeMethods;
 use dom::bindings::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::node::AudioNodeType;
+use servo_media::audio::context::AudioContext;
+use servo_media::audio::graph::NodeId;
+use servo_media::audio::node::{AudioNodeMessage, AudioNodeType};
 use servo_media::audio::oscillator_node::OscillatorNodeOptions as ServoMediaOscillatorOptions;
 use servo_media::audio::oscillator_node::OscillatorType as ServoMediaOscillatorType;
+use servo_media::audio::oscillator_node::OscillatorNodeMessage;
+use servo_media::audio::param::{UserAutomationEvent, RampKind};
+use std::f32;
+use std::rc::Rc;
+
+audio_param_impl!(Frequency, OscillatorNode, OscillatorNodeMessage, SetFrequency);
+//XXX audio_param_impl!(Detune, OscillatorNode, OscillatorNodeMessage, SetDetune);
 
 #[dom_struct]
 pub struct OscillatorNode {
     node: AudioScheduledSourceNode,
     oscillator_type: OscillatorType,
-    //    frequency: AudioParam,
-    //    detune: AudioParam,
+    frequency: DomRoot<AudioParam>,
+    //XXX detune: DomRoot<AudioParam>,
 }
 
 impl OscillatorNode {
@@ -36,15 +48,29 @@ impl OscillatorNode {
         node_options.channelCount = Some(2);
         node_options.channelCountMode = Some(ChannelCountMode::Max);
         node_options.channelInterpretation = Some(ChannelInterpretation::Speakers);
+        let node = AudioScheduledSourceNode::new_inherited(
+            AudioNodeType::OscillatorNode(oscillator_options.into()),
+            context,
+            &node_options,
+            0, /* inputs */
+            1, /* outputs */
+            );
+        let frequency = Frequency::new(context.audio_context_impl(), node.node_id());
+        let frequency = AudioParam::new(window,
+                                        Box::new(frequency),
+                                        AutomationRate::A_rate,
+                                        440., f32::MIN, f32::MAX);
+        /*XXX let detune = Detune::new(context.audio_context_impl(), node.node_id());
+        let detune = AudioParam::new(window,
+                                     Box::new(detune),
+                                     AutomationRate::A_rate,
+                                     0., -440. / 2., 440. / 2.);*/
+
         OscillatorNode {
-            node: AudioScheduledSourceNode::new_inherited(
-                      AudioNodeType::OscillatorNode(oscillator_options.into()),
-                      context,
-                      &node_options,
-                      0, /* inputs */
-                      1, /* outputs */
-                      ),
-                      oscillator_type: oscillator_options.type_,
+            node,
+            oscillator_type: oscillator_options.type_,
+            frequency,
+            //XXX detune,
         }
     }
 
@@ -67,23 +93,11 @@ impl OscillatorNode {
     }
 }
 
-/*impl OscillatorNodeMethods for OscillatorNode {
-  fn SetPeriodicWave(&self, periodic_wave: PeriodicWave) {
-// XXX
-}
-
-fn Type(&self) -> OscillatorType {
-self.oscillator_type
-}
-
-fn Frequency(&self) -> DomRoot<AudioParam> {
-DomRoot::from_ref(&self.frequency)
-}
-
-fn Detune(&self) -> DomRoot<AudioParam> {
-DomRoot::from_ref(&self.detune)
+impl OscillatorNodeMethods for OscillatorNode {
+    fn Frequency(&self) -> DomRoot<AudioParam> {
+        DomRoot::from_ref(&self.frequency)
+    }
 }
-}*/
 
 impl<'a> From<&'a OscillatorOptions> for ServoMediaOscillatorOptions {
     fn from(options: &'a OscillatorOptions) -> Self {
diff --git a/components/script/dom/webidls/AudioParam.webidl b/components/script/dom/webidls/AudioParam.webidl
index 3c0c4870c2b..4e6c6acea04 100644
--- a/components/script/dom/webidls/AudioParam.webidl
+++ b/components/script/dom/webidls/AudioParam.webidl
@@ -6,18 +6,24 @@
  * https://webaudio.github.io/web-audio-api/#dom-audioparam
  */
 
+enum AutomationRate {
+  "a-rate",
+  "k-rate"
+};
+
 [Exposed=Window]
 interface AudioParam {
              attribute float value;
+             attribute AutomationRate automationRate;
     readonly attribute float defaultValue;
     readonly attribute float minValue;
     readonly attribute float maxValue;
-//    AudioParam setValueAtTime(float value, double startTime);
-//    AudioParam linearRampToValueAtTime(float value, double endTime);
-//    AudioParam exponentialRampToValueAtTime(float value, double endTime);
-//    AudioParam setTargetAtTime(float target,
-//                               double startTime,
-//                               float timeConstant);
+    AudioParam setValueAtTime(float value, double startTime);
+    AudioParam linearRampToValueAtTime(float value, double endTime);
+    AudioParam exponentialRampToValueAtTime(float value, double endTime);
+    AudioParam setTargetAtTime(float target,
+                               double startTime,
+                               float timeConstant);
 //    AudioParam setValueCurveAtTime(sequence<float> values,
 //                                   double startTime,
 //                                   double duration);
diff --git a/components/script/dom/webidls/OscillatorNode.webidl b/components/script/dom/webidls/OscillatorNode.webidl
index 30197d2248c..c4fc2d01c22 100644
--- a/components/script/dom/webidls/OscillatorNode.webidl
+++ b/components/script/dom/webidls/OscillatorNode.webidl
@@ -24,11 +24,11 @@ dictionary OscillatorOptions : AudioNodeOptions {
 [Exposed=Window,
  Constructor (BaseAudioContext context, optional OscillatorOptions options)]
 interface OscillatorNode : AudioScheduledSourceNode {
-/*  [SetterThrows]
-  attribute OscillatorType type;
+//  [SetterThrows]
+//  attribute OscillatorType type;
 
   readonly attribute AudioParam frequency;
-  readonly attribute AudioParam detune;
+//  readonly attribute AudioParam detune;
 
-  void setPeriodicWave (PeriodicWave periodicWave);*/
+//  void setPeriodicWave (PeriodicWave periodicWave);
 };