third_party/WebKit/Source/platform/mediastream/MediaStreamWebAudioSource.h

/*
 * Copyright 2014 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 documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Ericsson nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#ifndef MediaStreamWebAudioSource_h
#define MediaStreamWebAudioSource_h

#include <memory>
#include "platform/audio/AudioSourceProvider.h"
#include "platform/wtf/Noncopyable.h"
#include "platform/wtf/PtrUtil.h"
#include "platform/wtf/ThreadingPrimitives.h"
#include "platform/wtf/build_config.h"

namespace blink {

class WebAudioSourceProvider;

class MediaStreamWebAudioSource : public AudioSourceProvider {
  WTF_MAKE_NONCOPYABLE(MediaStreamWebAudioSource);

 public:
  static std::unique_ptr<MediaStreamWebAudioSource> Create(
      std::unique_ptr<WebAudioSourceProvider> provider) {
    return WTF::WrapUnique(new MediaStreamWebAudioSource(std::move(provider)));
  }

  ~MediaStreamWebAudioSource() override;

 private:
  explicit MediaStreamWebAudioSource(std::unique_ptr<WebAudioSourceProvider>);

  // blink::AudioSourceProvider implementation.
  void ProvideInput(AudioBus*, size_t frames_to_process) override;

  std::unique_ptr<WebAudioSourceProvider> web_audio_source_provider_;
};

}  // namespace blink

#endif  // MediaStreamWebAudioSource_h