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// 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
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