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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_
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