Add constructors for WebAudio nodes

third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.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:
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  * 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 INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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 #include "modules/webaudio/BiquadFilterNode.h"
 
 #include "modules/webaudio/AudioBasicProcessorHandler.h"
+#include "modules/webaudio/BiquadFilterOptions.h"
 #include "platform/Histogram.h"
 #include "wtf/PtrUtil.h"
 
 namespace blink {
 
 BiquadFilterNode::BiquadFilterNode(BaseAudioContext& context)
     : AudioNode(context)
     , m_frequency(AudioParam::create(context, ParamTypeBiquadFilterFrequency, 350.0, 0, context.sampleRate() / 2))
     , m_q(AudioParam::create(context, ParamTypeBiquadFilterQ, 1.0))
     , m_gain(AudioParam::create(context, ParamTypeBiquadFilterGain, 0.0))
@@ skipping 21 matching lines @@
     DCHECK(isMainThread());
 
     if (context.isContextClosed()) {
         context.throwExceptionForClosedState(exceptionState);
         return nullptr;
     }
 
     return new BiquadFilterNode(context);
 }
 
+BiquadFilterNode* BiquadFilterNode::create(BaseAudioContext* context, const BiquadFilterOptions& options, ExceptionState& exceptionState)
+{
+    BiquadFilterNode* node = create(*context, exceptionState);
+
+    if (!node)
+        return nullptr;
+
+    node->handleChannelOptions(options, exceptionState);
+
+    if (options.hasType())
+        node->setType(options.type());
+    if (options.hasQ())
+        node->q()->setValue(options.Q());
+    if (options.hasDetune())
+        node->detune()->setValue(options.detune());
+    if (options.hasFrequency())
+        node->frequency()->setValue(options.frequency());
+    if (options.hasGain())
+        node->gain()->setValue(options.gain());
+
+    return node;
+}
+
 DEFINE_TRACE(BiquadFilterNode)
 {
     visitor->trace(m_frequency);
     visitor->trace(m_q);
     visitor->trace(m_gain);
     visitor->trace(m_detune);
     AudioNode::trace(visitor);
 }
 
 BiquadProcessor* BiquadFilterNode::getBiquadProcessor() const
@@ skipping 74 matching lines @@
     DCHECK(magResponse);
     DCHECK(phaseResponse);
 
     int n = std::min(frequencyHz->length(), std::min(magResponse->length(), phaseResponse->length()));
     if (n)
         getBiquadProcessor()->getFrequencyResponse(n, frequencyHz->data(), magResponse->data(), phaseResponse->data());
 }
 
 } // namespace blink