Add constructors for WebAudio nodes

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

 /*
  * Copyright (C) 2011, 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
@@ skipping 10 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/AudioBasicProcessorHandler.h"
 #include "modules/webaudio/BaseAudioContext.h"
 #include "modules/webaudio/WaveShaperNode.h"
+#include "modules/webaudio/WaveShaperOptions.h"
 #include "wtf/PtrUtil.h"
 
 namespace blink {
 
 WaveShaperNode::WaveShaperNode(BaseAudioContext& context)
     : AudioNode(context)
 {
     setHandler(AudioBasicProcessorHandler::create(AudioHandler::NodeTypeWaveShaper, *this, context.sampleRate(), wrapUnique(new WaveShaperProcessor(context.sampleRate(), 1))));
 
     handler().initialize();
 }
 
 WaveShaperNode* WaveShaperNode::create(BaseAudioContext& context, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     if (context.isContextClosed()) {
         context.throwExceptionForClosedState(exceptionState);
         return nullptr;
     }
 
     return new WaveShaperNode(context);
 }
 
+WaveShaperNode* WaveShaperNode::create(BaseAudioContext* context, const WaveShaperOptions& options, ExceptionState& exceptionState)
+{
+    WaveShaperNode* node = create(*context, exceptionState);
+
+    if (!node)
+        return nullptr;
+
+    node->handleChannelOptions(options, exceptionState);
+
+    if (options.hasCurve())
+        node->setCurve(options.curve(), exceptionState);
+    if (options.hasOversample())
+        node->setOversample(options.oversample());
+
+    return node;
+}
 WaveShaperProcessor* WaveShaperNode::getWaveShaperProcessor() const
 {
     return static_cast<WaveShaperProcessor*>(static_cast<AudioBasicProcessorHandler&>(handler()).processor());
 }
 
+void WaveShaperNode::setCurveImpl(
+    const float* curveData, unsigned curveLength, ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+
+    if (curveData && curveLength < 2) {
+        exceptionState.throwDOMException(
+            InvalidAccessError,
+            ExceptionMessages::indexExceedsMinimumBound<unsigned>(
+                "curve length",
+                curveLength,
+                2));
+        return;
+    }
+
+    getWaveShaperProcessor()->setCurve(curveData, curveLength);
+}
+
 void WaveShaperNode::setCurve(DOMFloat32Array* curve, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
-    if (curve && curve->length() < 2) {
-        exceptionState.throwDOMException(
-            InvalidAccessError,
-            ExceptionMessages::indexExceedsMinimumBound<unsigned>(
-                "curve length",
-                curve->length(),
-                2));
-        return;
-    }
+    if (curve)
+        setCurveImpl(curve->data(), curve->length(), exceptionState);
+    else
+        setCurveImpl(nullptr, 0, exceptionState);
+}
 
-    getWaveShaperProcessor()->setCurve(curve);
+void WaveShaperNode::setCurve(const Vector<float>& curve, ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+
+    setCurveImpl(curve.data(), curve.size(), exceptionState);
 }
 
 DOMFloat32Array* WaveShaperNode::curve()
 {
     Vector<float>* curve = getWaveShaperProcessor()->curve();
     if (!curve)
         return nullptr;
 
     unsigned size = curve->size();
     RefPtr<WTF::Float32Array> newCurve = WTF::Float32Array::create(size);
@@ skipping 33 matching lines @@
     case WaveShaperProcessor::OverSample4x:
         return "4x";
     default:
         ASSERT_NOT_REACHED();
         return "none";
     }
 }
 
 } // namespace blink