Add constructors for WebAudio nodes

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

Index: third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
index 69321b15b6550d29b5660e4bd455bc3e30c54fb7..733f675bccd544a185c13153eeba7de1cc862f5e 100644
--- a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
@@ -32,6 +32,7 @@
 #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"
@@ -53,8 +54,10 @@ 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)
 {
@@ -65,21 +68,80 @@ PeriodicWave* PeriodicWave::create(
         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);