// Copyright 2017 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef MEDIA_AUDIO_AUDIO_SYSTEM_HELPER_H_ #define MEDIA_AUDIO_AUDIO_SYSTEM_HELPER_H_ #include <optional> #include "base/memory/raw_ptr.h" #include "media/audio/audio_system.h" #include "media/base/media_export.h" namespace media { class AudioManager; // Helper class wrapping AudioManager functionality. Methods to be called on // audio thread only. Only audio system implementations are allowed to use it. // See AudioSystem interface for method descriptions. class MEDIA_EXPORT AudioSystemHelper { … }; } // namespace media #endif // MEDIA_AUDIO_AUDIO_SYSTEM_HELPER_H_