Make DOMTypedArray exported.

Source/modules/webaudio/AudioBuffer.cpp

 /*
  * Copyright (C) 2010 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 20 matching lines @@
 #include "modules/webaudio/AudioBuffer.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/DOMArrayBufferDeallocationObserver.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/AudioContext.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioFileReader.h"
 #include "platform/audio/AudioUtilities.h"
+#include "wtf/Float32Array.h"
 
 namespace blink {
 
 AudioBuffer* AudioBuffer::create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
 {
     if (!AudioUtilities::isValidAudioBufferSampleRate(sampleRate) || numberOfChannels > AudioContext::maxNumberOfChannels() || !numberOfChannels || !numberOfFrames)
         return nullptr;
 
     AudioBuffer* buffer = new AudioBuffer(numberOfChannels, numberOfFrames, sampleRate);
 
@@ skipping 75 matching lines @@
     if (buffer->createdSuccessfully(bus->numberOfChannels()))
         return buffer;
     return nullptr;
 }
 
 bool AudioBuffer::createdSuccessfully(unsigned desiredNumberOfChannels) const
 {
     return numberOfChannels() == desiredNumberOfChannels;
 }
 
+PassRefPtr<DOMFloat32Array> AudioBuffer::createFloat32Array(size_t length)
+{
+    RefPtr<WTF::Float32Array> bufferView = WTF::Float32Array::createOrNull(length);
+    if (!bufferView)
+        return nullptr;
+    return DOMFloat32Array::create(bufferView.release());
+}
+
 AudioBuffer::AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
     : m_sampleRate(sampleRate)
     , m_length(numberOfFrames)
 {
     m_channels.reserveCapacity(numberOfChannels);
 
     for (unsigned i = 0; i < numberOfChannels; ++i) {
-        RefPtr<DOMFloat32Array> channelDataArray = DOMFloat32Array::createOrNull(m_length);
+        RefPtr<DOMFloat32Array> channelDataArray = createFloat32Array(m_length);
         // If the channel data array could not be created, just return. The caller will need to
         // check that the desired number of channels were created.
         if (!channelDataArray) {
             return;
         }
 
         channelDataArray->setNeuterable(false);
         m_channels.append(channelDataArray);
     }
 }
 
 AudioBuffer::AudioBuffer(AudioBus* bus)
     : m_sampleRate(bus->sampleRate())
     , m_length(bus->length())
 {
     // Copy audio data from the bus to the Float32Arrays we manage.
     unsigned numberOfChannels = bus->numberOfChannels();
     m_channels.reserveCapacity(numberOfChannels);
     for (unsigned i = 0; i < numberOfChannels; ++i) {
-        RefPtr<DOMFloat32Array> channelDataArray = DOMFloat32Array::createOrNull(m_length);
+        RefPtr<DOMFloat32Array> channelDataArray = createFloat32Array(m_length);
         // If the channel data array could not be created, just return. The caller will need to
         // check that the desired number of channels were created.
         if (!channelDataArray)
             return;
 
         channelDataArray->setNeuterable(false);
         channelDataArray->setRange(bus->channel(i)->data(), m_length, 0);
         m_channels.append(channelDataArray);
     }
 }
@@ skipping 38 matching lines @@
         for (unsigned i = 0, n = numberOfChannels(); i < n; ++i) {
             getChannelData(i)->buffer()->setDeallocationObserver(DOMArrayBufferDeallocationObserver::instance());
         }
     }
     return wrapper;
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)