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Unified Diff: Source/modules/webaudio/WaveTable.h

Issue 18182009: WaveTable name has changed to PeriodicWave (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: fix global constructors test Created 7 years, 6 months ago
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Index: Source/modules/webaudio/WaveTable.h
diff --git a/Source/modules/webaudio/WaveTable.h b/Source/modules/webaudio/WaveTable.h
deleted file mode 100644
index cd5c696389c12afefd49f1ef15e4ead0c8b61e67..0000000000000000000000000000000000000000
--- a/Source/modules/webaudio/WaveTable.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef WaveTable_h
-#define WaveTable_h
-
-#include "bindings/v8/ScriptWrappable.h"
-#include "core/platform/audio/AudioArray.h"
-#include "wtf/Float32Array.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/RefPtr.h"
-#include "wtf/Vector.h"
-
-namespace WebCore {
-
-class WaveTable : public ScriptWrappable, public RefCounted<WaveTable> {
-public:
- static PassRefPtr<WaveTable> createSine(float sampleRate);
- static PassRefPtr<WaveTable> createSquare(float sampleRate);
- static PassRefPtr<WaveTable> createSawtooth(float sampleRate);
- static PassRefPtr<WaveTable> createTriangle(float sampleRate);
-
- // Creates an arbitrary wavetable given the frequency components (Fourier coefficients).
- static PassRefPtr<WaveTable> create(float sampleRate, Float32Array* real, Float32Array* imag);
-
- // Returns pointers to the lower and higher wavetable data for the pitch range containing
- // the given fundamental frequency. These two tables are in adjacent "pitch" ranges
- // where the higher table will have the maximum number of partials which won't alias when played back
- // at this fundamental frequency. The lower wavetable is the next range containing fewer partials than the higher wavetable.
- // Interpolation between these two tables can be made according to tableInterpolationFactor.
- // Where values from 0 -> 1 interpolate between lower -> higher.
- void waveDataForFundamentalFrequency(float, float* &lowerWaveData, float* &higherWaveData, float& tableInterpolationFactor);
-
- // Returns the scalar multiplier to the oscillator frequency to calculate wave table phase increment.
- float rateScale() const { return m_rateScale; }
-
- unsigned waveTableSize() const { return m_waveTableSize; }
- float sampleRate() const { return m_sampleRate; }
-
-private:
- explicit WaveTable(float sampleRate);
-
- void generateBasicWaveform(int);
-
- float m_sampleRate;
- unsigned m_waveTableSize;
- unsigned m_numberOfRanges;
- float m_centsPerRange;
-
- // The lowest frequency (in Hertz) where playback will include all of the partials.
- // Playing back lower than this frequency will gradually lose more high-frequency information.
- // This frequency is quite low (~10Hz @ 44.1KHz)
- float m_lowestFundamentalFrequency;
-
- float m_rateScale;
-
- unsigned numberOfRanges() const { return m_numberOfRanges; }
-
- // Maximum possible number of partials (before culling).
- unsigned maxNumberOfPartials() const;
-
- unsigned numberOfPartialsForRange(unsigned rangeIndex) const;
-
- // Creates tables based on numberOfComponents Fourier coefficients.
- void createBandLimitedTables(const float* real, const float* imag, unsigned numberOfComponents);
- Vector<OwnPtr<AudioFloatArray> > m_bandLimitedTables;
-};
-
-} // namespace WebCore
-
-#endif // WaveTable_h
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