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| 1 /* | 1 /* |
| 2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 36 | 36 |
| 37 namespace blink { | 37 namespace blink { |
| 38 | 38 |
| 39 // PannerNode is an AudioNode with one input and one output. | 39 // PannerNode is an AudioNode with one input and one output. |
| 40 // It positions a sound in 3D space, with the exact effect dependent on the pann
ing model. | 40 // It positions a sound in 3D space, with the exact effect dependent on the pann
ing model. |
| 41 // It has a position and an orientation in 3D space which is relative to the pos
ition and orientation of the context's AudioListener. | 41 // It has a position and an orientation in 3D space which is relative to the pos
ition and orientation of the context's AudioListener. |
| 42 // A distance effect will attenuate the gain as the position moves away from the
listener. | 42 // A distance effect will attenuate the gain as the position moves away from the
listener. |
| 43 // A cone effect will attenuate the gain as the orientation moves away from the
listener. | 43 // A cone effect will attenuate the gain as the orientation moves away from the
listener. |
| 44 // All of these effects follow the OpenAL specification very closely. | 44 // All of these effects follow the OpenAL specification very closely. |
| 45 | 45 |
| 46 class PannerNode FINAL : public AudioNode { | 46 class PannerNode final : public AudioNode { |
| 47 DEFINE_WRAPPERTYPEINFO(); | 47 DEFINE_WRAPPERTYPEINFO(); |
| 48 public: | 48 public: |
| 49 // These enums are used to distinguish what cached values of panner are dirt
y. | 49 // These enums are used to distinguish what cached values of panner are dirt
y. |
| 50 enum { | 50 enum { |
| 51 AzimuthElevationDirty = 0x1, | 51 AzimuthElevationDirty = 0x1, |
| 52 DistanceConeGainDirty = 0x2, | 52 DistanceConeGainDirty = 0x2, |
| 53 DopplerRateDirty = 0x4, | 53 DopplerRateDirty = 0x4, |
| 54 }; | 54 }; |
| 55 | 55 |
| 56 static PannerNode* create(AudioContext* context, float sampleRate) | 56 static PannerNode* create(AudioContext* context, float sampleRate) |
| 57 { | 57 { |
| 58 return adoptRefCountedGarbageCollectedWillBeNoop(new PannerNode(context,
sampleRate)); | 58 return adoptRefCountedGarbageCollectedWillBeNoop(new PannerNode(context,
sampleRate)); |
| 59 } | 59 } |
| 60 | 60 |
| 61 virtual ~PannerNode(); | 61 virtual ~PannerNode(); |
| 62 | 62 |
| 63 // AudioNode | 63 // AudioNode |
| 64 virtual void dispose() OVERRIDE; | 64 virtual void dispose() override; |
| 65 virtual void process(size_t framesToProcess) OVERRIDE; | 65 virtual void process(size_t framesToProcess) override; |
| 66 virtual void pullInputs(size_t framesToProcess) OVERRIDE; | 66 virtual void pullInputs(size_t framesToProcess) override; |
| 67 virtual void initialize() OVERRIDE; | 67 virtual void initialize() override; |
| 68 virtual void uninitialize() OVERRIDE; | 68 virtual void uninitialize() override; |
| 69 | 69 |
| 70 // Panning model | 70 // Panning model |
| 71 String panningModel() const; | 71 String panningModel() const; |
| 72 void setPanningModel(const String&); | 72 void setPanningModel(const String&); |
| 73 | 73 |
| 74 // Position, orientation and velocity | 74 // Position, orientation and velocity |
| 75 void setPosition(float x, float y, float z); | 75 void setPosition(float x, float y, float z); |
| 76 void setOrientation(float x, float y, float z); | 76 void setOrientation(float x, float y, float z); |
| 77 void setVelocity(float x, float y, float z); | 77 void setVelocity(float x, float y, float z); |
| 78 | 78 |
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| 97 void setConeOuterAngle(double); | 97 void setConeOuterAngle(double); |
| 98 | 98 |
| 99 double coneOuterGain() const { return m_coneEffect.outerGain(); } | 99 double coneOuterGain() const { return m_coneEffect.outerGain(); } |
| 100 void setConeOuterGain(double); | 100 void setConeOuterGain(double); |
| 101 | 101 |
| 102 void markPannerAsDirty(unsigned); | 102 void markPannerAsDirty(unsigned); |
| 103 | 103 |
| 104 // It must be called on audio thread, currently called only process() in Aud
ioBufferSourceNode. | 104 // It must be called on audio thread, currently called only process() in Aud
ioBufferSourceNode. |
| 105 double dopplerRate(); | 105 double dopplerRate(); |
| 106 | 106 |
| 107 virtual double tailTime() const OVERRIDE { return m_panner ? m_panner->tailT
ime() : 0; } | 107 virtual double tailTime() const override { return m_panner ? m_panner->tailT
ime() : 0; } |
| 108 virtual double latencyTime() const OVERRIDE { return m_panner ? m_panner->la
tencyTime() : 0; } | 108 virtual double latencyTime() const override { return m_panner ? m_panner->la
tencyTime() : 0; } |
| 109 | 109 |
| 110 virtual void setChannelCount(unsigned long, ExceptionState&) FINAL; | 110 virtual void setChannelCount(unsigned long, ExceptionState&) final; |
| 111 virtual void setChannelCountMode(const String&, ExceptionState&) FINAL; | 111 virtual void setChannelCountMode(const String&, ExceptionState&) final; |
| 112 | 112 |
| 113 virtual void trace(Visitor*) OVERRIDE; | 113 virtual void trace(Visitor*) override; |
| 114 | 114 |
| 115 private: | 115 private: |
| 116 PannerNode(AudioContext*, float sampleRate); | 116 PannerNode(AudioContext*, float sampleRate); |
| 117 | 117 |
| 118 // AudioContext's listener | 118 // AudioContext's listener |
| 119 AudioListener* listener(); | 119 AudioListener* listener(); |
| 120 | 120 |
| 121 bool setPanningModel(unsigned); // Returns true on success. | 121 bool setPanningModel(unsigned); // Returns true on success. |
| 122 bool setDistanceModel(unsigned); // Returns true on success. | 122 bool setDistanceModel(unsigned); // Returns true on success. |
| 123 | 123 |
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| 163 // AudioContext's connection count | 163 // AudioContext's connection count |
| 164 unsigned m_connectionCount; | 164 unsigned m_connectionCount; |
| 165 | 165 |
| 166 // Synchronize process() with setting of the panning model, source's locatio
n information, listener, distance parameters and sound cones. | 166 // Synchronize process() with setting of the panning model, source's locatio
n information, listener, distance parameters and sound cones. |
| 167 mutable Mutex m_processLock; | 167 mutable Mutex m_processLock; |
| 168 }; | 168 }; |
| 169 | 169 |
| 170 } // namespace blink | 170 } // namespace blink |
| 171 | 171 |
| 172 #endif // PannerNode_h | 172 #endif // PannerNode_h |
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