Remove the AudioManager singleton.

media/audio/mac/audio_output_mac_unittest.cc

 // Copyright (c) 2011 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 "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/simple_sources.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::DoAll;
 using ::testing::Field;
@@ skipping 24 matching lines @@
   uint16 buffer[samples] = { 0xffff };
   source.OnMoreData(NULL, reinterpret_cast<uint8*>(buffer), sizeof(buffer),
                     AudioBuffersState(0, 0));
   EXPECT_EQ(0, buffer[0]);
   EXPECT_EQ(5126, buffer[1]);
 }
 
 // ===========================================================================
 // Validation of AudioParameters::AUDIO_PCM_LINEAR
 //
-// Unlike windows, the tests can reliably detect the existense of real
+// Unlike windows, the tests can reliably detect the existence of real
 // audio devices on the bots thus no need for 'headless' detection.
 
 // Test that can it be created and closed.
 TEST(MacAudioTest, PCMWaveStreamGetAndClose) {
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices())
     return;
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(
       AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
                       8000, 16, 1024));
   ASSERT_TRUE(NULL != oas);
   oas->Close();
 }
 
 // Test that it can be opened and closed.
 TEST(MacAudioTest, PCMWaveStreamOpenAndClose) {
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices())
     return;
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(
       AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO,
                       8000, 16, 1024));
   ASSERT_TRUE(NULL != oas);
   EXPECT_TRUE(oas->Open());
   oas->Close();
 }
 
 // This test produces actual audio for 1.5 seconds on the default wave device at
 // 44.1K s/sec. Parameters have been chosen carefully so you should not hear
 // pops or noises while the sound is playing. The sound must also be identical
 // to the sound of PCMWaveStreamPlay200HzTone22KssMono test.
 TEST(MacAudioTest, PCMWaveStreamPlay200HzTone44KssMono) {
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices())
     return;
   uint32 frames_100_ms = AudioParameters::kAudioCDSampleRate / 10;
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(
       AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
                       AudioParameters::kAudioCDSampleRate, 16, frames_100_ms));
   ASSERT_TRUE(NULL != oas);
   EXPECT_TRUE(oas->Open());
 
   SineWaveAudioSource source(SineWaveAudioSource::FORMAT_16BIT_LINEAR_PCM, 1,
                              200.0, AudioParameters::kAudioCDSampleRate);
   oas->SetVolume(0.5);
   oas->Start(&source);
   usleep(500000);
 
   // Test that the volume is within the set limits.
   double volume = 0.0;
   oas->GetVolume(&volume);
   EXPECT_LT(volume, 0.51);
   EXPECT_GT(volume, 0.49);
   oas->Stop();
   oas->Close();
 }
 
 // This test produces actual audio for 1.5 seconds on the default wave device at
 // 22K s/sec. Parameters have been chosen carefully so you should not hear pops
 // or noises while the sound is playing. The sound must also be identical to the
 // sound of PCMWaveStreamPlay200HzTone44KssMono test.
 TEST(MacAudioTest, PCMWaveStreamPlay200HzTone22KssMono) {
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices())
     return;
   uint32 frames_100_ms = AudioParameters::kAudioCDSampleRate / 10;
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(
       AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
                       AudioParameters::kAudioCDSampleRate / 2, 16,
                       frames_100_ms));
   ASSERT_TRUE(NULL != oas);
 
   SineWaveAudioSource source(SineWaveAudioSource::FORMAT_16BIT_LINEAR_PCM, 1,
                              200.0, AudioParameters::kAudioCDSampleRate/2);
   EXPECT_TRUE(oas->Open());
   oas->Start(&source);
   usleep(1500000);
   oas->Stop();
   oas->Close();
 }
 
 // Custom action to clear a memory buffer.
 static void ClearBuffer(AudioOutputStream* stream, uint8* dest,
                         uint32 max_size, AudioBuffersState buffers_state) {
   memset(dest, 0, max_size);
 }
 
 TEST(MacAudioTest, PCMWaveStreamPendingBytes) {
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
+  scoped_refptr<AudioManager> audio_man(AudioManager::Create());
   if (!audio_man->HasAudioOutputDevices())
     return;
 
   uint32 frames_100_ms = AudioParameters::kAudioCDSampleRate / 10;
   AudioOutputStream* oas = audio_man->MakeAudioOutputStream(
       AudioParameters(AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_MONO,
                       AudioParameters::kAudioCDSampleRate, 16, frames_100_ms));
   ASSERT_TRUE(NULL != oas);
 
   NiceMock<MockAudioSource> source;
@@ skipping 19 matching lines @@
       .WillOnce(Return(0));
   EXPECT_CALL(source, OnMoreData(oas, NotNull(), bytes_100_ms, _))
       .Times(AnyNumber())
       .WillRepeatedly(Return(0));
 
   oas->Start(&source);
   usleep(500000);
   oas->Stop();
   oas->Close();
 }