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      1 /*
      2  * Copyright (C) 2010, Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1.  Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2.  Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23  */
     24 
     25 #ifndef DelayNode_h
     26 #define DelayNode_h
     27 
     28 #include "AudioBasicProcessorNode.h"
     29 #include "DelayProcessor.h"
     30 #include <wtf/PassRefPtr.h>
     31 
     32 namespace WebCore {
     33 
     34 class AudioParam;
     35 
     36 class DelayNode : public AudioBasicProcessorNode {
     37 public:
     38     static PassRefPtr<DelayNode> create(AudioContext* context, double sampleRate)
     39     {
     40         return adoptRef(new DelayNode(context, sampleRate));
     41     }
     42 
     43     AudioParam* delayTime();
     44 
     45 private:
     46     DelayNode(AudioContext*, double sampleRate);
     47 
     48     DelayProcessor* delayProcessor() { return static_cast<DelayProcessor*>(processor()); }
     49 };
     50 
     51 } // namespace WebCore
     52 
     53 #endif // DelayNode_h
     54