third_party/blink/public/platform/web_media_stream_center.h

/*
 * Copyright (C) 2012 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR 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,
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 */

#ifndef THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_MEDIA_STREAM_CENTER_H_
#define THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_MEDIA_STREAM_CENTER_H_

#include "third_party/blink/public/platform/web_media_stream_track.h"

namespace blink {

class WebAudioSourceProvider;
class WebMediaStreamTrack;
class WebMediaStreamSource;

class WebMediaStreamCenter {
 public:
  virtual ~WebMediaStreamCenter() = default;

  // Track functionality.
  virtual void DidCreateMediaStreamTrack(const WebMediaStreamTrack&) {}
  virtual void DidCloneMediaStreamTrack(const WebMediaStreamTrack& original,
                                        const WebMediaStreamTrack& clone) {}
  virtual void DidSetContentHint(const WebMediaStreamTrack&) {}
  virtual void DidEnableMediaStreamTrack(const WebMediaStreamTrack&) {}
  virtual void DidDisableMediaStreamTrack(const WebMediaStreamTrack&) {}

  // Source functionality.
  virtual void DidStopMediaStreamSource(const WebMediaStreamSource&) {}
  virtual void GetSourceSettings(const WebMediaStreamSource&,
                                 WebMediaStreamTrack::Settings&) {}

  // Caller must take the ownership of the returned |WebAudioSourceProvider|
  // object.
  virtual WebAudioSourceProvider* CreateWebAudioSourceFromMediaStreamTrack(
      const WebMediaStreamTrack&) {
    return nullptr;
  }
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_PUBLIC_PLATFORM_WEB_MEDIA_STREAM_CENTER_H_