Bug 1128494 - Change the default panning model of the PannerNode to "equalpower". r=smaug

--HG--
extra : rebase_source : 34877a4b518ac354cf1732a16f70b1659986aabc

browser/devtools/webaudioeditor/test/head.js

@@ -486,7 +486,7 @@ const NODE_DEFAULT_VALUES = {
     "oversample": "none"
   },
   "PannerNode": {
-    "panningModel": "HRTF",
+    "panningModel": "equalpower",
     "distanceModel": "inverse",
     "refDistance": 1,
     "maxDistance": 10000,

dom/media/webaudio/PannerNode.cpp

@@ -45,7 +45,7 @@ public:
   explicit PannerNodeEngine(AudioNode* aNode)
     : AudioNodeEngine(aNode)
     // Please keep these default values consistent with PannerNode::PannerNode below.
-    , mPanningModelFunction(&PannerNodeEngine::HRTFPanningFunction)
+    , mPanningModelFunction(&PannerNodeEngine::EqualPowerPanningFunction)
     , mDistanceModelFunction(&PannerNodeEngine::InverseGainFunction)
     , mPosition()
     , mOrientation(1., 0., 0.)
@@ -228,7 +228,7 @@ PannerNode::PannerNode(AudioContext* aContext)
               ChannelCountMode::Clamped_max,
               ChannelInterpretation::Speakers)
   // Please keep these default values consistent with PannerNodeEngine::PannerNodeEngine above.
-  , mPanningModel(PanningModelType::HRTF)
+  , mPanningModel(PanningModelType::Equalpower)
   , mDistanceModel(DistanceModelType::Inverse)
   , mPosition()
   , mOrientation(1., 0., 0.)

dom/media/webaudio/test/test_pannerNode.html

@@ -33,7 +33,7 @@ addLoadEvent(function() {
   panner.connect(destination);
 
   // Verify default values
-  is(panner.panningModel, "HRTF", "Correct default value for panning model");
+  is(panner.panningModel, "equalpower", "Correct default value for panning model");
   is(panner.distanceModel, "inverse", "Correct default value for distance model");
   near(panner.refDistance, 1, "Correct default value for ref distance");
   near(panner.maxDistance, 10000, "Correct default value for max distance");

dom/media/webaudio/test/test_pannerNodeHRTFSymmetry.html

@@ -29,6 +29,8 @@ function isChannelSilent(channel) {
 function startTest() {
   var leftPanner = ctx.createPanner();
   var rightPanner = ctx.createPanner();
+  leftPanner.type = "HRTF";
+  rightPanner.type = "HRTF";
   leftPanner.setPosition(-1,0,0);
   rightPanner.setPosition(1,0,0);
 

dom/media/webaudio/test/test_pannerNodeTail.html

@@ -176,6 +176,7 @@ function startTest() {
     delay.connect(referencePanner)
 
     var panner = ctx.createPanner();
+    panner.type = "HRTF";
     delay.connect(panner);
     testPanners[i] = panner;
 
@@ -207,6 +208,7 @@ function prepareTest() {
   // database.  Wait for this to load before starting the test.
   var processor = ctx.createScriptProcessor(bufferSize, 2, 0);
   referencePanner = ctx.createPanner();
+  referencePanner.type = "HRTF";
   referencePanner.connect(processor);
   var oscillator = ctx.createOscillator();
   oscillator.connect(referencePanner);

dom/webidl/PannerNode.webidl

@@ -23,21 +23,21 @@ enum DistanceModelType {
 
 interface PannerNode : AudioNode {
 
-    // Default for stereo is HRTF 
+    // Default for stereo is equalpower
     attribute PanningModelType panningModel;
 
-    // Uses a 3D cartesian coordinate system 
+    // Uses a 3D cartesian coordinate system
     void setPosition(double x, double y, double z);
     void setOrientation(double x, double y, double z);
     void setVelocity(double x, double y, double z);
 
-    // Distance model and attributes 
+    // Distance model and attributes
     attribute DistanceModelType distanceModel;
     attribute double refDistance;
     attribute double maxDistance;
     attribute double rolloffFactor;
 
-    // Directional sound cone 
+    // Directional sound cone
     attribute double coneInnerAngle;
     attribute double coneOuterAngle;
     attribute double coneOuterGain;