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| 1 /* | 1 /* |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2012 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 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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| 29 #ifndef PeriodicWave_h | 29 #ifndef PeriodicWave_h |
| 30 #define PeriodicWave_h | 30 #define PeriodicWave_h |
| 31 | 31 |
| 32 #include "bindings/core/v8/ScriptWrappable.h" | 32 #include "bindings/core/v8/ScriptWrappable.h" |
| 33 #include "platform/audio/AudioArray.h" | 33 #include "platform/audio/AudioArray.h" |
| 34 #include "wtf/Float32Array.h" | 34 #include "wtf/Float32Array.h" |
| 35 #include "wtf/Forward.h" | 35 #include "wtf/Forward.h" |
| 36 #include "wtf/RefCounted.h" | 36 #include "wtf/RefCounted.h" |
| 37 #include "wtf/Vector.h" | 37 #include "wtf/Vector.h" |
| 38 | 38 |
| 39 namespace WebCore { | 39 namespace blink { |
| 40 | 40 |
| 41 class PeriodicWave : public RefCountedWillBeGarbageCollectedFinalized<PeriodicWa
ve>, public ScriptWrappable { | 41 class PeriodicWave : public RefCountedWillBeGarbageCollectedFinalized<PeriodicWa
ve>, public ScriptWrappable { |
| 42 public: | 42 public: |
| 43 static PassRefPtrWillBeRawPtr<PeriodicWave> createSine(float sampleRate); | 43 static PassRefPtrWillBeRawPtr<PeriodicWave> createSine(float sampleRate); |
| 44 static PassRefPtrWillBeRawPtr<PeriodicWave> createSquare(float sampleRate); | 44 static PassRefPtrWillBeRawPtr<PeriodicWave> createSquare(float sampleRate); |
| 45 static PassRefPtrWillBeRawPtr<PeriodicWave> createSawtooth(float sampleRate)
; | 45 static PassRefPtrWillBeRawPtr<PeriodicWave> createSawtooth(float sampleRate)
; |
| 46 static PassRefPtrWillBeRawPtr<PeriodicWave> createTriangle(float sampleRate)
; | 46 static PassRefPtrWillBeRawPtr<PeriodicWave> createTriangle(float sampleRate)
; |
| 47 | 47 |
| 48 // Creates an arbitrary periodic wave given the frequency components (Fourie
r coefficients). | 48 // Creates an arbitrary periodic wave given the frequency components (Fourie
r coefficients). |
| 49 static PassRefPtrWillBeRawPtr<PeriodicWave> create(float sampleRate, Float32
Array* real, Float32Array* imag); | 49 static PassRefPtrWillBeRawPtr<PeriodicWave> create(float sampleRate, Float32
Array* real, Float32Array* imag); |
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| 83 // Maximum possible number of partials (before culling). | 83 // Maximum possible number of partials (before culling). |
| 84 unsigned maxNumberOfPartials() const; | 84 unsigned maxNumberOfPartials() const; |
| 85 | 85 |
| 86 unsigned numberOfPartialsForRange(unsigned rangeIndex) const; | 86 unsigned numberOfPartialsForRange(unsigned rangeIndex) const; |
| 87 | 87 |
| 88 // Creates tables based on numberOfComponents Fourier coefficients. | 88 // Creates tables based on numberOfComponents Fourier coefficients. |
| 89 void createBandLimitedTables(const float* real, const float* imag, unsigned
numberOfComponents); | 89 void createBandLimitedTables(const float* real, const float* imag, unsigned
numberOfComponents); |
| 90 Vector<OwnPtr<AudioFloatArray> > m_bandLimitedTables; | 90 Vector<OwnPtr<AudioFloatArray> > m_bandLimitedTables; |
| 91 }; | 91 }; |
| 92 | 92 |
| 93 } // namespace WebCore | 93 } // namespace blink |
| 94 | 94 |
| 95 #endif // PeriodicWave_h | 95 #endif // PeriodicWave_h |
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