Add constructors for WebAudio nodes

third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp

 /*
  * 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
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/BaseAudioContext.h"
 #include "modules/webaudio/OscillatorNode.h"
 #include "modules/webaudio/PeriodicWave.h"
+#include "modules/webaudio/PeriodicWaveOptions.h"
 #include "platform/audio/FFTFrame.h"
 #include "platform/audio/VectorMath.h"
 #include "wtf/PtrUtil.h"
 #include <algorithm>
 #include <memory>
 
 namespace blink {
 
 // The number of bands per octave.  Each octave will have this many entries in the wave tables.
 const unsigned kNumberOfOctaveBands = 3;
 
 // The max length of a periodic wave. This must be a power of two greater than or equal to 2048 and
 // must be supported by the FFT routines.
 const unsigned kMaxPeriodicWaveSize = 16384;
 
 const float CentsPerRange = 1200 / kNumberOfOctaveBands;
 
 using namespace VectorMath;
 
 PeriodicWave* PeriodicWave::create(
     BaseAudioContext& context,
-    DOMFloat32Array* real,
-    DOMFloat32Array* imag,
+    size_t realLength,
+    const float* real,
+    size_t imagLength,
+    const float* imag,
     bool disableNormalization,
     ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     if (context.isContextClosed()) {
         context.throwExceptionForClosedState(exceptionState);
         return nullptr;
     }
 
-    if (real->length() != imag->length()) {
+    if (realLength != imagLength) {
         exceptionState.throwDOMException(
             IndexSizeError,
-            "length of real array (" + String::number(real->length())
-            + ") and length of imaginary array (" +  String::number(imag->length())
+            "length of real array (" + String::number(realLength)
+            + ") and length of imaginary array (" +  String::number(imagLength)
             + ") must match.");
         return nullptr;
     }
 
     PeriodicWave* periodicWave = new PeriodicWave(context.sampleRate());
-    size_t numberOfComponents = real->length();
-    periodicWave->createBandLimitedTables(real->data(), imag->data(), numberOfComponents, disableNormalization);
+    periodicWave->createBandLimitedTables(real, imag, realLength, disableNormalization);
     return periodicWave;
 }
 
+PeriodicWave* PeriodicWave::create(
+    BaseAudioContext& context,
+    DOMFloat32Array* real,
+    DOMFloat32Array* imag,
+    bool disableNormalization,
+    ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+
+    return create(
+        context,
+        real->length(),
+        real->data(),
+        imag->length(),
+        imag->data(),
+        disableNormalization,
+        exceptionState);
+}
+
+PeriodicWave* PeriodicWave::create(
+    BaseAudioContext* context,
+    const PeriodicWaveOptions& options,
+    ExceptionState& exceptionState)
+{
+    bool normalize = options.hasDisableNormalization() ? options.disableNormalization() : false;
+
+
+    if (!options.hasReal() && !options.hasImag()) {
+        exceptionState.throwDOMException(
+            InvalidStateError,
+            "At least one of real and imag members must be specified.");
+        return nullptr;
+    }
+
+    Vector<float> realCoef;
+    Vector<float> imagCoef;
+
+    if (options.hasReal()) {
+        realCoef = options.real();
+        if (options.hasImag())
+            imagCoef = options.imag();
+        else
+            imagCoef.resize(realCoef.size());
+    } else {
+        // We know real is not given, so imag must exist (because we checked for
+        // this above).
+        imagCoef = options.imag();
+        realCoef.resize(imagCoef.size());
+    }
+
+    return create(
+        *context,
+        realCoef.size(),
+        realCoef.data(),
+        imagCoef.size(),
+        imagCoef.data(),
+        normalize,
+        exceptionState);
+}
+
 PeriodicWave* PeriodicWave::createSine(float sampleRate)
 {
     PeriodicWave* periodicWave = new PeriodicWave(sampleRate);
     periodicWave->generateBasicWaveform(OscillatorHandler::SINE);
     return periodicWave;
 }
 
 PeriodicWave* PeriodicWave::createSquare(float sampleRate)
 {
     PeriodicWave* periodicWave = new PeriodicWave(sampleRate);
@@ skipping 251 matching lines @@
 
         realP[n] = 0;
         imagP[n] = b;
     }
 
     createBandLimitedTables(realP, imagP, halfSize, false);
 }
 
 } // namespace blink