@jimbly/howler
Version:
GLOV.js fork of Howler.js
704 lines (609 loc) • 26.6 kB
JavaScript
/*!
* Spatial Plugin - Adds support for stereo and 3D audio where Web Audio is supported.
*
* howler.js v2.2.4
* howlerjs.com
*
* (c) 2013-2020, James Simpson of GoldFire Studios
* goldfirestudios.com
*
* Modified by Jimb Esser:
* Fix setting stereo() on one sound changing the panningModel for all future sounds
* Fix leaving connected panners when changing spatial/stereo settings
* Apply stereo/pos/orientation parameters to play() before playing to reduce popping between playing a sound and settings its position
* Prefer .value= instead of .setValueAtTime - fixes iOS crashes, prevents two changes in quick succession for ignoring the second one, fixes FireFox 100ms delays
* Protect against ctx.currentTime being NaN and Infinity on iOS
*
* MIT License
*/
(function() {
'use strict';
// Setup default properties.
HowlerGlobal.prototype._pos = [0, 0, 0];
HowlerGlobal.prototype._orientation = [0, 0, -1, 0, 1, 0];
/** Global Methods **/
/***************************************************************************/
/**
* Helper method to update the stereo panning position of all current Howls.
* Future Howls will not use this value unless explicitly set.
* @param {Number} pan A value of -1.0 is all the way left and 1.0 is all the way right.
* @return {Howler/Number} Self or current stereo panning value.
*/
HowlerGlobal.prototype.stereo = function(pan) {
var self = this;
// Stop right here if not using Web Audio.
if (!self.ctx || !self.ctx.listener) {
return self;
}
// Loop through all Howls and update their stereo panning.
for (var i=self._howls.length-1; i>=0; i--) {
self._howls[i].stereo(pan);
}
return self;
};
/**
* Get/set the position of the listener in 3D cartesian space. Sounds using
* 3D position will be relative to the listener's position.
* @param {Number} x The x-position of the listener.
* @param {Number} y The y-position of the listener.
* @param {Number} z The z-position of the listener.
* @return {Howler/Array} Self or current listener position.
*/
HowlerGlobal.prototype.pos = function(x, y, z) {
var self = this;
// Stop right here if not using Web Audio.
if (!self.ctx || !self.ctx.listener) {
return self;
}
// Set the defaults for optional 'y' & 'z'.
y = (typeof y !== 'number') ? self._pos[1] : y;
z = (typeof z !== 'number') ? self._pos[2] : z;
if (typeof x === 'number') {
self._pos = [x, y, z];
if (typeof self.ctx.listener.positionX !== 'undefined') {
var currentTime = Howler._currentTime();
self.ctx.listener.positionX.setTargetAtTime(self._pos[0], currentTime, 0.1);
self.ctx.listener.positionY.setTargetAtTime(self._pos[1], currentTime, 0.1);
self.ctx.listener.positionZ.setTargetAtTime(self._pos[2], currentTime, 0.1);
} else {
self.ctx.listener.setPosition(self._pos[0], self._pos[1], self._pos[2]);
}
} else {
return self._pos;
}
return self;
};
/**
* Get/set the direction the listener is pointing in the 3D cartesian space.
* A front and up vector must be provided. The front is the direction the
* face of the listener is pointing, and up is the direction the top of the
* listener is pointing. Thus, these values are expected to be at right angles
* from each other.
* @param {Number} x The x-orientation of the listener.
* @param {Number} y The y-orientation of the listener.
* @param {Number} z The z-orientation of the listener.
* @param {Number} xUp The x-orientation of the top of the listener.
* @param {Number} yUp The y-orientation of the top of the listener.
* @param {Number} zUp The z-orientation of the top of the listener.
* @return {Howler/Array} Returns self or the current orientation vectors.
*/
HowlerGlobal.prototype.orientation = function(x, y, z, xUp, yUp, zUp) {
var self = this;
// Stop right here if not using Web Audio.
if (!self.ctx || !self.ctx.listener) {
return self;
}
// Set the defaults for optional 'y' & 'z'.
var or = self._orientation;
y = (typeof y !== 'number') ? or[1] : y;
z = (typeof z !== 'number') ? or[2] : z;
xUp = (typeof xUp !== 'number') ? or[3] : xUp;
yUp = (typeof yUp !== 'number') ? or[4] : yUp;
zUp = (typeof zUp !== 'number') ? or[5] : zUp;
if (typeof x === 'number') {
self._orientation = [x, y, z, xUp, yUp, zUp];
if (typeof self.ctx.listener.forwardX !== 'undefined') {
var currentTime = Howler._currentTime();
self.ctx.listener.forwardX.setTargetAtTime(x, currentTime, 0.1);
self.ctx.listener.forwardY.setTargetAtTime(y, currentTime, 0.1);
self.ctx.listener.forwardZ.setTargetAtTime(z, currentTime, 0.1);
self.ctx.listener.upX.setTargetAtTime(xUp, currentTime, 0.1);
self.ctx.listener.upY.setTargetAtTime(yUp, currentTime, 0.1);
self.ctx.listener.upZ.setTargetAtTime(zUp, currentTime, 0.1);
} else {
self.ctx.listener.setOrientation(x, y, z, xUp, yUp, zUp);
}
} else {
return or;
}
return self;
};
/** Group Methods **/
/***************************************************************************/
/**
* Add new properties to the core init.
* @param {Function} _super Core init method.
* @return {Howl}
*/
Howl.prototype.init = (function(_super) {
return function(o) {
var self = this;
// Setup user-defined default properties.
self._orientation = o.orientation || [1, 0, 0];
self._stereo = o.stereo || null;
self._pos = o.pos || null;
self._pannerAttr = {
coneInnerAngle: typeof o.coneInnerAngle !== 'undefined' ? o.coneInnerAngle : 360,
coneOuterAngle: typeof o.coneOuterAngle !== 'undefined' ? o.coneOuterAngle : 360,
coneOuterGain: typeof o.coneOuterGain !== 'undefined' ? o.coneOuterGain : 0,
distanceModel: typeof o.distanceModel !== 'undefined' ? o.distanceModel : 'inverse',
maxDistance: typeof o.maxDistance !== 'undefined' ? o.maxDistance : 10000,
panningModel: typeof o.panningModel !== 'undefined' ? o.panningModel : 'HRTF',
refDistance: typeof o.refDistance !== 'undefined' ? o.refDistance : 1,
rolloffFactor: typeof o.rolloffFactor !== 'undefined' ? o.rolloffFactor : 1
};
// Setup event listeners.
self._onstereo = o.onstereo ? [{fn: o.onstereo}] : [];
self._onpos = o.onpos ? [{fn: o.onpos}] : [];
self._onorientation = o.onorientation ? [{fn: o.onorientation}] : [];
// Complete initilization with howler.js core's init function.
return _super.call(this, o);
};
})(Howl.prototype.init);
Howl.prototype._prePlayWebAudio = (function(_super) {
return function(sound, o) {
var self = this;
_super.call(this, sound, o);
// Setup spatial parameters _before_ starting the sound playing
o = o || {};
if (o.stereo !== undefined) {
self.stereo(o.stereo, sound._id);
} else if (o.pos !== undefined) {
self.pos(o.pos[0], o.pos[1], o.pos[2], sound._id);
if (o.orientation !== undefined) {
self.orientation(o.orientation[0], o.orientation[1], o.orientation[2], sound._id);
}
}
};
})(Howl.prototype._prePlayWebAudio);
/**
* Get/set the stereo panning of the audio source for this sound or all in the group.
* @param {Number} pan A value of -1.0 is all the way left and 1.0 is all the way right.
* @param {Number} id (optional) The sound ID. If none is passed, all in group will be updated.
* @return {Howl/Number} Returns self or the current stereo panning value.
*/
Howl.prototype.stereo = function(pan, id) {
var self = this;
// Stop right here if not using Web Audio.
if (!self._webAudio) {
return self;
}
// If the sound hasn't loaded, add it to the load queue to change stereo pan when capable.
if (self._state !== 'loaded') {
self._queue.push({
event: 'stereo',
action: function() {
self.stereo(pan, id);
}
});
return self;
}
// Check for PannerStereoNode support and fallback to PannerNode if it doesn't exist.
var pannerType = (typeof Howler.ctx.createStereoPanner === 'undefined') ? 'spatial' : 'stereo';
// Setup the group's stereo panning if no ID is passed.
if (typeof id === 'undefined') {
// Return the group's stereo panning if no parameters are passed.
if (typeof pan === 'number') {
self._stereo = pan;
self._pos = [pan, 0, 0];
} else {
return self._stereo;
}
}
// Change the streo panning of one or all sounds in group.
var ids = self._getSoundIds(id);
for (var i=0; i<ids.length; i++) {
// Get the sound.
var sound = self._soundById(ids[i]);
if (sound) {
if (typeof pan === 'number') {
sound._stereo = pan;
sound._pos = [pan, 0, 0];
if (sound._node) {
if (pannerType === 'spatial') {
// If we are falling back, make sure the panningModel is equalpower.
sound._pannerAttr = {
coneInnerAngle: sound._pannerAttr.coneInnerAngle,
coneOuterAngle: sound._pannerAttr.coneOuterAngle,
coneOuterGain: sound._pannerAttr.coneOuterGain,
distanceModel: sound._pannerAttr.distanceModel,
maxDistance: sound._pannerAttr.maxDistance,
refDistance: sound._pannerAttr.refDistance,
rolloffFactor: sound._pannerAttr.rolloffFactor,
panningModel: 'equalpower',
};
}
// Check if there is a panner setup and create a new one if not.
if (!sound._panner || !sound._panner.pan) {
setupPanner(sound, pannerType);
}
if (pannerType === 'spatial') {
if (typeof sound._panner.positionX !== 'undefined') {
sound._panner.positionX.value = pan;
sound._panner.positionY.value = 0;
sound._panner.positionZ.value = 0;
} else {
sound._panner.setPosition(pan, 0, 0);
}
} else {
sound._panner.pan.value = pan;
}
}
self._emit('stereo', sound._id);
} else {
return sound._stereo;
}
}
}
return self;
};
/**
* Get/set the 3D spatial position of the audio source for this sound or group relative to the global listener.
* @param {Number} x The x-position of the audio source.
* @param {Number} y The y-position of the audio source.
* @param {Number} z The z-position of the audio source.
* @param {Number} id (optional) The sound ID. If none is passed, all in group will be updated.
* @return {Howl/Array} Returns self or the current 3D spatial position: [x, y, z].
*/
Howl.prototype.pos = function(x, y, z, id) {
var self = this;
// Stop right here if not using Web Audio.
if (!self._webAudio) {
return self;
}
// If the sound hasn't loaded, add it to the load queue to change position when capable.
if (self._state !== 'loaded') {
self._queue.push({
event: 'pos',
action: function() {
self.pos(x, y, z, id);
}
});
return self;
}
// Set the defaults for optional 'y' & 'z'.
y = (typeof y !== 'number') ? 0 : y;
z = (typeof z !== 'number') ? -0.5 : z;
// Setup the group's spatial position if no ID is passed.
if (typeof id === 'undefined') {
// Return the group's spatial position if no parameters are passed.
if (typeof x === 'number') {
self._pos = [x, y, z];
} else {
return self._pos;
}
}
// Change the spatial position of one or all sounds in group.
var ids = self._getSoundIds(id);
for (var i=0; i<ids.length; i++) {
// Get the sound.
var sound = self._soundById(ids[i]);
if (sound) {
if (typeof x === 'number') {
sound._pos = [x, y, z];
if (sound._node) {
// Check if there is a panner setup and create a new one if not.
if (!sound._panner || sound._panner.pan) {
setupPanner(sound, 'spatial');
}
if (typeof sound._panner.positionX !== 'undefined') {
sound._panner.positionX.value = x;
sound._panner.positionY.value = y;
sound._panner.positionZ.value = z;
} else {
sound._panner.setPosition(x, y, z);
}
}
self._emit('pos', sound._id);
} else {
return sound._pos;
}
}
}
return self;
};
/**
* Get/set the direction the audio source is pointing in the 3D cartesian coordinate
* space. Depending on how direction the sound is, based on the `cone` attributes,
* a sound pointing away from the listener can be quiet or silent.
* @param {Number} x The x-orientation of the source.
* @param {Number} y The y-orientation of the source.
* @param {Number} z The z-orientation of the source.
* @param {Number} id (optional) The sound ID. If none is passed, all in group will be updated.
* @return {Howl/Array} Returns self or the current 3D spatial orientation: [x, y, z].
*/
Howl.prototype.orientation = function(x, y, z, id) {
var self = this;
// Stop right here if not using Web Audio.
if (!self._webAudio) {
return self;
}
// If the sound hasn't loaded, add it to the load queue to change orientation when capable.
if (self._state !== 'loaded') {
self._queue.push({
event: 'orientation',
action: function() {
self.orientation(x, y, z, id);
}
});
return self;
}
// Set the defaults for optional 'y' & 'z'.
y = (typeof y !== 'number') ? self._orientation[1] : y;
z = (typeof z !== 'number') ? self._orientation[2] : z;
// Setup the group's spatial orientation if no ID is passed.
if (typeof id === 'undefined') {
// Return the group's spatial orientation if no parameters are passed.
if (typeof x === 'number') {
self._orientation = [x, y, z];
} else {
return self._orientation;
}
}
// Change the spatial orientation of one or all sounds in group.
var ids = self._getSoundIds(id);
for (var i=0; i<ids.length; i++) {
// Get the sound.
var sound = self._soundById(ids[i]);
if (sound) {
if (typeof x === 'number') {
sound._orientation = [x, y, z];
if (sound._node) {
// Check if there is a panner setup and create a new one if not.
if (!sound._panner) {
// Make sure we have a position to setup the node with.
if (!sound._pos) {
sound._pos = self._pos || [0, 0, -0.5];
}
setupPanner(sound, 'spatial');
}
if (typeof sound._panner.orientationX !== 'undefined') {
sound._panner.orientationX.value = x;
sound._panner.orientationY.value = y;
sound._panner.orientationZ.value = z;
} else {
sound._panner.setOrientation(x, y, z);
}
}
self._emit('orientation', sound._id);
} else {
return sound._orientation;
}
}
}
return self;
};
/**
* Get/set the panner node's attributes for a sound or group of sounds.
* This method can optionall take 0, 1 or 2 arguments.
* pannerAttr() -> Returns the group's values.
* pannerAttr(id) -> Returns the sound id's values.
* pannerAttr(o) -> Set's the values of all sounds in this Howl group.
* pannerAttr(o, id) -> Set's the values of passed sound id.
*
* Attributes:
* coneInnerAngle - (360 by default) A parameter for directional audio sources, this is an angle, in degrees,
* inside of which there will be no volume reduction.
* coneOuterAngle - (360 by default) A parameter for directional audio sources, this is an angle, in degrees,
* outside of which the volume will be reduced to a constant value of `coneOuterGain`.
* coneOuterGain - (0 by default) A parameter for directional audio sources, this is the gain outside of the
* `coneOuterAngle`. It is a linear value in the range `[0, 1]`.
* distanceModel - ('inverse' by default) Determines algorithm used to reduce volume as audio moves away from
* listener. Can be `linear`, `inverse` or `exponential.
* maxDistance - (10000 by default) The maximum distance between source and listener, after which the volume
* will not be reduced any further.
* refDistance - (1 by default) A reference distance for reducing volume as source moves further from the listener.
* This is simply a variable of the distance model and has a different effect depending on which model
* is used and the scale of your coordinates. Generally, volume will be equal to 1 at this distance.
* rolloffFactor - (1 by default) How quickly the volume reduces as source moves from listener. This is simply a
* variable of the distance model and can be in the range of `[0, 1]` with `linear` and `[0, ∞]`
* with `inverse` and `exponential`.
* panningModel - ('HRTF' by default) Determines which spatialization algorithm is used to position audio.
* Can be `HRTF` or `equalpower`.
*
* @return {Howl/Object} Returns self or current panner attributes.
*/
Howl.prototype.pannerAttr = function() {
var self = this;
var args = arguments;
var o, id, sound;
// Stop right here if not using Web Audio.
if (!self._webAudio) {
return self;
}
// Determine the values based on arguments.
if (args.length === 0) {
// Return the group's panner attribute values.
return self._pannerAttr;
} else if (args.length === 1) {
if (typeof args[0] === 'object') {
o = args[0];
// Set the grou's panner attribute values.
if (typeof id === 'undefined') {
if (!o.pannerAttr) {
o.pannerAttr = {
coneInnerAngle: o.coneInnerAngle,
coneOuterAngle: o.coneOuterAngle,
coneOuterGain: o.coneOuterGain,
distanceModel: o.distanceModel,
maxDistance: o.maxDistance,
refDistance: o.refDistance,
rolloffFactor: o.rolloffFactor,
panningModel: o.panningModel
};
}
self._pannerAttr = {
coneInnerAngle: typeof o.pannerAttr.coneInnerAngle !== 'undefined' ? o.pannerAttr.coneInnerAngle : self._coneInnerAngle,
coneOuterAngle: typeof o.pannerAttr.coneOuterAngle !== 'undefined' ? o.pannerAttr.coneOuterAngle : self._coneOuterAngle,
coneOuterGain: typeof o.pannerAttr.coneOuterGain !== 'undefined' ? o.pannerAttr.coneOuterGain : self._coneOuterGain,
distanceModel: typeof o.pannerAttr.distanceModel !== 'undefined' ? o.pannerAttr.distanceModel : self._distanceModel,
maxDistance: typeof o.pannerAttr.maxDistance !== 'undefined' ? o.pannerAttr.maxDistance : self._maxDistance,
refDistance: typeof o.pannerAttr.refDistance !== 'undefined' ? o.pannerAttr.refDistance : self._refDistance,
rolloffFactor: typeof o.pannerAttr.rolloffFactor !== 'undefined' ? o.pannerAttr.rolloffFactor : self._rolloffFactor,
panningModel: typeof o.pannerAttr.panningModel !== 'undefined' ? o.pannerAttr.panningModel : self._panningModel
};
}
} else {
// Return this sound's panner attribute values.
sound = self._soundById(parseInt(args[0], 10));
return sound ? sound._pannerAttr : self._pannerAttr;
}
} else if (args.length === 2) {
o = args[0];
id = parseInt(args[1], 10);
}
// Update the values of the specified sounds.
var ids = self._getSoundIds(id);
for (var i=0; i<ids.length; i++) {
sound = self._soundById(ids[i]);
if (sound) {
// Merge the new values into the sound.
var pa = sound._pannerAttr;
pa = {
coneInnerAngle: typeof o.coneInnerAngle !== 'undefined' ? o.coneInnerAngle : pa.coneInnerAngle,
coneOuterAngle: typeof o.coneOuterAngle !== 'undefined' ? o.coneOuterAngle : pa.coneOuterAngle,
coneOuterGain: typeof o.coneOuterGain !== 'undefined' ? o.coneOuterGain : pa.coneOuterGain,
distanceModel: typeof o.distanceModel !== 'undefined' ? o.distanceModel : pa.distanceModel,
maxDistance: typeof o.maxDistance !== 'undefined' ? o.maxDistance : pa.maxDistance,
refDistance: typeof o.refDistance !== 'undefined' ? o.refDistance : pa.refDistance,
rolloffFactor: typeof o.rolloffFactor !== 'undefined' ? o.rolloffFactor : pa.rolloffFactor,
panningModel: typeof o.panningModel !== 'undefined' ? o.panningModel : pa.panningModel
};
// Create a new panner node if one doesn't already exist.
var panner = sound._panner;
if (!panner) {
// Make sure we have a position to setup the node with.
if (!sound._pos) {
sound._pos = self._pos || [0, 0, -0.5];
}
// Create a new panner node.
setupPanner(sound, 'spatial');
panner = sound._panner
}
// Update the panner values or create a new panner if none exists.
panner.coneInnerAngle = pa.coneInnerAngle;
panner.coneOuterAngle = pa.coneOuterAngle;
panner.coneOuterGain = pa.coneOuterGain;
panner.distanceModel = pa.distanceModel;
panner.maxDistance = pa.maxDistance;
panner.refDistance = pa.refDistance;
panner.rolloffFactor = pa.rolloffFactor;
panner.panningModel = pa.panningModel;
}
}
return self;
};
/** Single Sound Methods **/
/***************************************************************************/
/**
* Add new properties to the core Sound init.
* @param {Function} _super Core Sound init method.
* @return {Sound}
*/
Sound.prototype.init = (function(_super) {
return function() {
var self = this;
var parent = self._parent;
// Setup user-defined default properties.
self._orientation = parent._orientation;
self._stereo = parent._stereo;
self._pos = parent._pos;
self._pannerAttr = parent._pannerAttr;
// Complete initilization with howler.js core Sound's init function.
_super.call(this);
// If a stereo or position was specified, set it up.
if (self._stereo) {
parent.stereo(self._stereo);
} else if (self._pos) {
parent.pos(self._pos[0], self._pos[1], self._pos[2], self._id);
}
};
})(Sound.prototype.init);
/**
* Override the Sound.reset method to clean up properties from the spatial plugin.
* @param {Function} _super Sound reset method.
* @return {Sound}
*/
Sound.prototype.reset = (function(_super) {
return function() {
var self = this;
var parent = self._parent;
// Reset all spatial plugin properties on this sound.
self._orientation = parent._orientation;
self._stereo = parent._stereo;
self._pos = parent._pos;
self._pannerAttr = parent._pannerAttr;
// If a stereo or position was specified, set it up.
if (self._stereo) {
parent.stereo(self._stereo);
} else if (self._pos) {
parent.pos(self._pos[0], self._pos[1], self._pos[2], self._id);
} else if (self._panner) {
// Disconnect the panner.
self._panner.disconnect(0);
self._panner = undefined;
parent._refreshBuffer(self);
}
// Complete resetting of the sound.
return _super.call(this);
};
})(Sound.prototype.reset);
/** Helper Methods **/
/***************************************************************************/
/**
* Create a new panner node and save it on the sound.
* @param {Sound} sound Specific sound to setup panning on.
* @param {String} type Type of panner to create: 'stereo' or 'spatial'.
*/
var setupPanner = function(sound, type) {
type = type || 'spatial';
if (sound._panner) {
sound._panner.disconnect(0);
sound._panner = undefined;
}
// Create the new panner node.
if (type === 'spatial') {
sound._panner = Howler.ctx.createPanner();
sound._panner.coneInnerAngle = sound._pannerAttr.coneInnerAngle;
sound._panner.coneOuterAngle = sound._pannerAttr.coneOuterAngle;
sound._panner.coneOuterGain = sound._pannerAttr.coneOuterGain;
sound._panner.distanceModel = sound._pannerAttr.distanceModel;
sound._panner.maxDistance = sound._pannerAttr.maxDistance;
sound._panner.refDistance = sound._pannerAttr.refDistance;
sound._panner.rolloffFactor = sound._pannerAttr.rolloffFactor;
sound._panner.panningModel = sound._pannerAttr.panningModel;
if (typeof sound._panner.positionX !== 'undefined') {
sound._panner.positionX.value = sound._pos[0];
sound._panner.positionY.value = sound._pos[1];
sound._panner.positionZ.value = sound._pos[2];
} else {
sound._panner.setPosition(sound._pos[0], sound._pos[1], sound._pos[2]);
}
if (typeof sound._panner.orientationX !== 'undefined') {
sound._panner.orientationX.value = sound._orientation[0];
sound._panner.orientationY.value = sound._orientation[1];
sound._panner.orientationZ.value = sound._orientation[2];
} else {
sound._panner.setOrientation(sound._orientation[0], sound._orientation[1], sound._orientation[2]);
}
} else {
sound._panner = Howler.ctx.createStereoPanner();
sound._panner.pan.value = sound._stereo;
}
sound._panner.connect(sound._node);
// Update the connections.
if (!sound._paused) {
sound._parent.pause(sound._id, true).play(sound._id, true);
}
};
})();