blob: 3d33b55939540a1ef20d36d3b275a4f925bf2c4f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
// Copyright (c) 2012 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.
#ifndef MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
#define MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
#include <string>
#include "media/audio/audio_manager_base.h"
#include "media/audio/win/audio_device_listener_win.h"
namespace media {
// Windows implementation of the AudioManager singleton. This class is internal
// to the audio output and only internal users can call methods not exposed by
// the AudioManager class.
class MEDIA_EXPORT AudioManagerWin : public AudioManagerBase {
public:
AudioManagerWin(AudioLogFactory* audio_log_factory);
// Implementation of AudioManager.
bool HasAudioOutputDevices() override;
bool HasAudioInputDevices() override;
base::string16 GetAudioInputDeviceModel() override;
void ShowAudioInputSettings() override;
void GetAudioInputDeviceNames(AudioDeviceNames* device_names) override;
void GetAudioOutputDeviceNames(AudioDeviceNames* device_names) override;
AudioParameters GetInputStreamParameters(
const std::string& device_id) override;
std::string GetAssociatedOutputDeviceID(
const std::string& input_device_id) override;
// Implementation of AudioManagerBase.
AudioOutputStream* MakeLinearOutputStream(
const AudioParameters& params) override;
AudioOutputStream* MakeLowLatencyOutputStream(
const AudioParameters& params,
const std::string& device_id) override;
AudioInputStream* MakeLinearInputStream(
const AudioParameters& params,
const std::string& device_id) override;
AudioInputStream* MakeLowLatencyInputStream(
const AudioParameters& params,
const std::string& device_id) override;
std::string GetDefaultOutputDeviceID() override;
protected:
~AudioManagerWin() override;
AudioParameters GetPreferredOutputStreamParameters(
const std::string& output_device_id,
const AudioParameters& input_params) override;
private:
enum EnumerationType {
kMMDeviceEnumeration,
kWaveEnumeration,
};
// Allow unit test to modify the utilized enumeration API.
friend class AudioManagerTest;
EnumerationType enumeration_type_;
EnumerationType enumeration_type() { return enumeration_type_; }
void SetEnumerationType(EnumerationType type) {
enumeration_type_ = type;
}
inline bool core_audio_supported() const {
return enumeration_type_ == kMMDeviceEnumeration;
}
// Returns a PCMWaveInAudioInputStream instance or NULL on failure.
// This method converts MMDevice-style device ID to WaveIn-style device ID if
// necessary.
// (Please see device_enumeration_win.h for more info about the two kinds of
// device IDs.)
AudioInputStream* CreatePCMWaveInAudioInputStream(
const AudioParameters& params,
const std::string& device_id);
// Helper methods for performing expensive initialization tasks on the audio
// thread instead of on the UI thread which AudioManager is constructed on.
void InitializeOnAudioThread();
void ShutdownOnAudioThread();
void GetAudioDeviceNamesImpl(bool input, AudioDeviceNames* device_names);
// We frequently see deadlock in third party Windows audio drivers, so after
// a device change is detected, stall for a second before allowing calls into
// the Windows audio subsystem. See http://crbug.com/422522
void StallAudioThreadAfterDeviceChange(
AudioDeviceListenerWin::DeviceNotificationType notification_type);
// Listen for output device changes.
scoped_ptr<AudioDeviceListenerWin> output_device_listener_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerWin);
};
} // namespace media
#endif // MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
|
