| // 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_ |