Remove panner and listener .setVelocity() calls, which got forcibly r…

…emoved from the WebAudio spec. Closes emscripten-core#4587. See WebAudio/web-audio-api#372.

src/library_openal.js

@@ -397,7 +397,9 @@ var LibraryOpenAL = {
           this._velocity[0] = val[0];
           this._velocity[1] = val[1];
           this._velocity[2] = val[2];
-          if (this.panner) this.panner.setVelocity(val[0], val[1], val[2]);
+          // TODO: The velocity values are not currently used to implement a doppler effect.
+          // If support for doppler effect is reintroduced, compute the doppler
+          // speed pitch factor and apply it here.
         },
         get direction() {
           return this._direction;
@@ -504,7 +506,8 @@ var LibraryOpenAL = {
           panner.maxDistance = src.maxDistance;
           panner.rolloffFactor = src.rolloffFactor;
           panner.setPosition(src.position[0], src.position[1], src.position[2]);
-          panner.setVelocity(src.velocity[0], src.velocity[1], src.velocity[2]);
+          // TODO: If support for doppler effect is reintroduced, compute the doppler
+          // speed pitch factor and apply it here.
           panner.connect(AL.currentContext.gain);
 
           // Disconnect from the default source.
@@ -1367,7 +1370,9 @@ var LibraryOpenAL = {
       AL.currentContext.ctx.listener._velocity[0] = v1;
       AL.currentContext.ctx.listener._velocity[1] = v2;
       AL.currentContext.ctx.listener._velocity[2] = v3;
-      AL.currentContext.ctx.listener.setVelocity(v1, v2, v3);
+      // TODO: The velocity values are not currently used to implement a doppler effect.
+      // If support for doppler effect is reintroduced, compute the doppler
+      // speed pitch factor and apply it here.
       break;
     default:
 #if OPENAL_DEBUG
@@ -1402,7 +1407,9 @@ var LibraryOpenAL = {
       AL.currentContext.ctx.listener._velocity[0] = x;
       AL.currentContext.ctx.listener._velocity[1] = y;
       AL.currentContext.ctx.listener._velocity[2] = z;
-      AL.currentContext.ctx.listener.setVelocity(x, y, z);
+      // TODO: The velocity values are not currently used to implement a doppler effect.
+      // If support for doppler effect is reintroduced, compute the doppler
+      // speed pitch factor and apply it here.
       break;
     case 0x100F /* AL_ORIENTATION */:
       var x = {{{ makeGetValue('values', '0', 'float') }}};