| // Copyright 2017 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. |
| |
| #include "media/audio/audio_system.h" |
| |
| namespace media { |
| |
| static AudioSystem* g_last_created = nullptr; |
| |
| AudioSystem::~AudioSystem() {} |
| |
| AudioSystem* AudioSystem::Get() { |
| return g_last_created; |
| } |
| |
| void AudioSystem::SetInstance(AudioSystem* audio_system) { |
| DCHECK(audio_system); |
| if (g_last_created && audio_system) { |
| // We create multiple instances of AudioSystem only when testing. |
| // We should not encounter this case in production. |
| LOG(WARNING) << "Multiple instances of AudioSystem detected"; |
| } |
| g_last_created = audio_system; |
| } |
| |
| void AudioSystem::ClearInstance(const AudioSystem* audio_system) { |
| DCHECK(audio_system); |
| if (g_last_created != audio_system) { |
| // We create multiple instances of AudioSystem only when testing. |
| // We should not encounter this case in production. |
| LOG(WARNING) << "Multiple instances of AudioSystem detected"; |
| } else { |
| g_last_created = nullptr; |
| } |
| } |
| |
| } // namespace media |