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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SERVICES_AUDIO_STREAM_MONITOR_H_
#define SERVICES_AUDIO_STREAM_MONITOR_H_
#include "base/unguessable_token.h"
namespace audio {
class Snoopable;
class StreamMonitor {
public:
// Called when a stream in the group becomes active.
virtual void OnStreamActive(Snoopable* snoopable) = 0;
// Called when a stream in the group becomes inactive.
virtual void OnStreamInactive(Snoopable* snoopable) = 0;
protected:
virtual ~StreamMonitor() = default;
};
} // namespace audio
#endif // SERVICES_AUDIO_STREAM_MONITOR_H_