1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "media/audio/audio_manager.h"
6
7#include "base/bind.h"
8#include "base/bind_helpers.h"
9#include "base/lazy_instance.h"
10#include "base/logging.h"
11#include "base/message_loop/message_loop.h"
12#include "media/audio/fake_audio_log_factory.h"
13
14namespace media {
15namespace {
16AudioManager* g_last_created = NULL;
17}
18
19// Forward declaration of the platform specific AudioManager factory function.
20AudioManager* CreateAudioManager(AudioLogFactory* audio_log_factory);
21
22AudioManager::AudioManager() {}
23
24AudioManager::~AudioManager() {
25  CHECK(!g_last_created || g_last_created == this);
26  g_last_created = NULL;
27}
28
29// static
30AudioManager* AudioManager::Create(AudioLogFactory* audio_log_factory) {
31  CHECK(!g_last_created);
32  g_last_created = CreateAudioManager(audio_log_factory);
33  return g_last_created;
34}
35
36// static
37AudioManager* AudioManager::CreateForTesting() {
38  static base::LazyInstance<FakeAudioLogFactory>::Leaky fake_log_factory =
39      LAZY_INSTANCE_INITIALIZER;
40  return Create(fake_log_factory.Pointer());
41}
42
43// static
44AudioManager* AudioManager::Get() {
45  return g_last_created;
46}
47
48}  // namespace media
49