gecko/content/media/webaudio/PannerNode.cpp
2013-03-12 19:28:30 -04:00

143 lines
4.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 http://mozilla.org/MPL/2.0/. */
#include "PannerNode.h"
#include "AudioNodeEngine.h"
#include "AudioNodeStream.h"
#include "AudioListener.h"
namespace mozilla {
namespace dom {
class PannerNodeEngine : public AudioNodeEngine
{
public:
PannerNodeEngine()
// Please keep these default values consistent with PannerNode::PannerNode below.
: mPanningModel(PanningModelTypeValues::HRTF)
, mDistanceModel(DistanceModelTypeValues::Inverse)
, mPosition()
, mOrientation(1., 0., 0.)
, mVelocity()
, mRefDistance(1.)
, mMaxDistance(10000.)
, mRolloffFactor(1.)
, mConeInnerAngle(360.)
, mConeOuterAngle(360.)
, mConeOuterGain(0.)
// These will be initialized when a PannerNode is created, so just initialize them
// to some dummy values here.
, mListenerDopplerFactor(0.)
, mListenerSpeedOfSound(0.)
{
}
virtual void SetInt32Parameter(uint32_t aIndex, int32_t aParam) MOZ_OVERRIDE
{
switch (aIndex) {
case PannerNode::PANNING_MODEL:
mPanningModel = PanningModelType(aParam);
break;
case PannerNode::DISTANCE_MODEL:
mDistanceModel = DistanceModelType(aParam);
break;
default:
NS_ERROR("Bad PannerNodeEngine Int32Parameter");
}
}
virtual void SetThreeDPointParameter(uint32_t aIndex, const ThreeDPoint& aParam) MOZ_OVERRIDE
{
switch (aIndex) {
case PannerNode::LISTENER_POSITION: mListenerPosition = aParam; break;
case PannerNode::LISTENER_ORIENTATION: mListenerOrientation = aParam; break;
case PannerNode::LISTENER_UPVECTOR: mListenerUpVector = aParam; break;
case PannerNode::LISTENER_VELOCITY: mListenerVelocity = aParam; break;
case PannerNode::POSITION: mPosition = aParam; break;
case PannerNode::ORIENTATION: mOrientation = aParam; break;
case PannerNode::VELOCITY: mVelocity = aParam; break;
default:
NS_ERROR("Bad PannerNodeEngine ThreeDPointParameter");
}
}
virtual void SetDoubleParameter(uint32_t aIndex, double aParam) MOZ_OVERRIDE
{
switch (aIndex) {
case PannerNode::LISTENER_DOPPLER_FACTOR: mListenerDopplerFactor = aParam; break;
case PannerNode::LISTENER_SPEED_OF_SOUND: mListenerSpeedOfSound = aParam; break;
case PannerNode::REF_DISTANCE: mRefDistance = aParam; break;
case PannerNode::MAX_DISTANCE: mMaxDistance = aParam; break;
case PannerNode::ROLLOFF_FACTOR: mRolloffFactor = aParam; break;
case PannerNode::CONE_INNER_ANGLE: mConeInnerAngle = aParam; break;
case PannerNode::CONE_OUTER_ANGLE: mConeOuterAngle = aParam; break;
case PannerNode::CONE_OUTER_GAIN: mConeOuterGain = aParam; break;
default:
NS_ERROR("Bad PannerNodeEngine DoubleParameter");
}
}
virtual void ProduceAudioBlock(AudioNodeStream* aStream,
const AudioChunk& aInput,
AudioChunk* aOutput,
bool *aFinished) MOZ_OVERRIDE
{
// TODO: actually do 3D positioning computations here
*aOutput = aInput;
}
PanningModelType mPanningModel;
DistanceModelType mDistanceModel;
ThreeDPoint mPosition;
ThreeDPoint mOrientation;
ThreeDPoint mVelocity;
double mRefDistance;
double mMaxDistance;
double mRolloffFactor;
double mConeInnerAngle;
double mConeOuterAngle;
double mConeOuterGain;
ThreeDPoint mListenerPosition;
ThreeDPoint mListenerOrientation;
ThreeDPoint mListenerUpVector;
ThreeDPoint mListenerVelocity;
double mListenerDopplerFactor;
double mListenerSpeedOfSound;
};
PannerNode::PannerNode(AudioContext* aContext)
: AudioNode(aContext)
// Please keep these default values consistent with PannerNodeEngine::PannerNodeEngine above.
, mPanningModel(PanningModelTypeValues::HRTF)
, mDistanceModel(DistanceModelTypeValues::Inverse)
, mPosition()
, mOrientation(1., 0., 0.)
, mVelocity()
, mRefDistance(1.)
, mMaxDistance(10000.)
, mRolloffFactor(1.)
, mConeInnerAngle(360.)
, mConeOuterAngle(360.)
, mConeOuterGain(0.)
{
mStream = aContext->Graph()->CreateAudioNodeStream(new PannerNodeEngine());
// We should register once we have set up our stream and engine.
Context()->Listener()->RegisterPannerNode(this);
}
PannerNode::~PannerNode()
{
DestroyMediaStream();
}
JSObject*
PannerNode::WrapObject(JSContext* aCx, JSObject* aScope)
{
return PannerNodeBinding::Wrap(aCx, aScope, this);
}
}
}