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| 1 // Copyright 2014 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 "ash/system/win/audio/tray_audio_delegate_win.h" | |
| 6 | |
| 7 #include <audiopolicy.h> | |
| 8 #include <cmath> | |
| 9 | |
| 10 #include "grit/ash_resources.h" | |
| 11 #include "grit/ash_strings.h" | |
| 12 #include "media/audio/win/core_audio_util_win.h" | |
| 13 | |
| 14 using base::win::ScopedComPtr; | |
| 15 | |
| 16 namespace { | |
| 17 | |
| 18 // Volume value which should be considered as muted in range [0, 100]. | |
| 19 const int kMuteThresholdPercent = 1; | |
| 20 | |
| 21 // Lowest volume which is considered to be audible in the range [0, 100]. | |
| 22 const int kDefaultUnmuteVolumePercent = 4; | |
| 23 | |
| 24 } // namespace | |
| 25 | |
| 26 namespace ash { | |
| 27 namespace system { | |
| 28 | |
| 29 void TrayAudioDelegateWin::AdjustOutputVolumeToAudibleLevel() { | |
| 30 if (GetOutputVolumeLevel() <= kMuteThresholdPercent) | |
| 31 SetOutputVolumeLevel(kDefaultUnmuteVolumePercent); | |
| 32 } | |
| 33 | |
| 34 int TrayAudioDelegateWin::GetOutputDefaultVolumeMuteLevel() { | |
| 35 return kMuteThresholdPercent; | |
| 36 } | |
| 37 | |
| 38 int TrayAudioDelegateWin::GetOutputVolumeLevel() { | |
| 39 ScopedComPtr<ISimpleAudioVolume> volume_control = | |
| 40 CreateDefaultVolumeControl(); | |
| 41 if (!volume_control) | |
| 42 return 0; | |
| 43 | |
| 44 float level = 0.0f; | |
| 45 if (FAILED(volume_control->GetMasterVolume(&level))) | |
| 46 return 0; | |
| 47 | |
| 48 // MSVC prior to 2013 doesn't have a round function. The below code is not | |
| 49 // conformant to C99 round(), but since we know that 0 <= level <= 100, it | |
| 50 // should be ok. | |
| 51 return static_cast<int>(level + 0.5); | |
| 52 } | |
| 53 | |
| 54 int TrayAudioDelegateWin::GetActiveOutputDeviceIconId() { | |
| 55 return kNoAudioDeviceIcon; | |
| 56 } | |
| 57 | |
| 58 bool TrayAudioDelegateWin::HasAlternativeSources() { | |
| 59 return false; | |
| 60 } | |
| 61 | |
| 62 bool TrayAudioDelegateWin::IsOutputAudioMuted() { | |
| 63 ScopedComPtr<ISimpleAudioVolume> volume_control = | |
| 64 CreateDefaultVolumeControl(); | |
| 65 | |
| 66 if (!volume_control) | |
| 67 return false; | |
| 68 | |
| 69 BOOL mute = FALSE; | |
| 70 if (FAILED(volume_control->GetMute(&mute))) | |
| 71 return false; | |
| 72 | |
| 73 return !!mute; | |
| 74 } | |
| 75 | |
| 76 void TrayAudioDelegateWin::SetOutputAudioIsMuted(bool is_muted) { | |
| 77 ScopedComPtr<ISimpleAudioVolume> volume_control = | |
| 78 CreateDefaultVolumeControl(); | |
| 79 | |
| 80 if (!volume_control) | |
| 81 return; | |
| 82 | |
| 83 volume_control->SetMute(is_muted, NULL); | |
| 84 } | |
| 85 | |
| 86 void TrayAudioDelegateWin::SetOutputVolumeLevel(int level) { | |
| 87 ScopedComPtr<ISimpleAudioVolume> volume_control = | |
| 88 CreateDefaultVolumeControl(); | |
| 89 | |
| 90 if (!volume_control) | |
| 91 return; | |
| 92 | |
| 93 float volume_level = static_cast<float>(level) / 100.0f; | |
| 94 volume_control->SetMasterVolume(volume_level, NULL); | |
| 95 } | |
| 96 | |
| 97 ScopedComPtr<ISimpleAudioVolume> | |
| 98 TrayAudioDelegateWin::CreateDefaultVolumeControl() { | |
| 99 ScopedComPtr<ISimpleAudioVolume> volume_control; | |
| 100 ScopedComPtr<IAudioSessionManager> session_manager; | |
| 101 | |
| 102 ScopedComPtr<IMMDevice> device = | |
| 103 media::CoreAudioUtil::CreateDefaultDevice(eRender, eConsole); | |
| 104 if (!device || | |
| 105 FAILED(device->Activate(__uuidof(IAudioSessionManager), CLSCTX_ALL, NULL, | |
| 106 session_manager.ReceiveVoid()))) { | |
| 107 return volume_control; | |
| 108 } | |
| 109 | |
| 110 session_manager->GetSimpleAudioVolume(NULL, FALSE, | |
| 111 volume_control.Receive()); | |
| 112 | |
| 113 return volume_control; | |
| 114 } | |
| 115 | |
| 116 } // namespace system | |
| 117 } // namespace ash | |
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Chromium Code Reviews
Issue 188693004:
Revert of Enable the volume slider in Ash for windows. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src