text: /*
   * Copyright (C) 2010 Google Inc. All rights reserved.
   * Copyright (C) 2016-2020 Apple 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
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
   * 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
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include "AudioContextOptions.h"
  #include "BaseAudioContext.h"
  
  namespace WebCore {
  
  class DefaultAudioDestinationNode;
  
  class AudioContext : public BaseAudioContext {
      WTF_MAKE_ISO_ALLOCATED(AudioContext);
  public:
      // Create an AudioContext for rendering to the audio hardware.
      static ExceptionOr<Ref<AudioContext>> create(Document&, const AudioContextOptions& = { });
  
      void close(DOMPromiseDeferred<void>&&);
  
      DefaultAudioDestinationNode* destination();
      double baseLatency();
  
  #if ENABLE(VIDEO)
      ExceptionOr<Ref<MediaElementAudioSourceNode>> createMediaElementSource(HTMLMediaElement&);
  #endif
  #if ENABLE(MEDIA_STREAM)
      ExceptionOr<Ref<MediaStreamAudioSourceNode>> createMediaStreamSource(MediaStream&);
      ExceptionOr<Ref<MediaStreamAudioDestinationNode>> createMediaStreamDestination();
  #endif
  
  private:
      AudioContext(Document&, const AudioContextOptions&);
      AudioContext(Document&, AudioBuffer* renderTarget);
  };
  
  } // WebCore
  